B: Fix contextmenu animations

README.md

@@ -39,12 +39,15 @@ This readme file is used mostly to document project dependencies and conventions
   - react-error-boundary
   - react-tooltip
   - react-zoom-pan-pinch
+  - react-hook-form
   - reactflow
   - js-file-download
   - use-debounce
   - qrcode.react
   - html-to-image
   - zustand
+  - zod
+  - @hookform/resolvers
   - @tanstack/react-table
   - @tanstack/react-query
   - @tanstack/react-query-devtools

rsconcept/backend/apps/users/serializers.py

@@ -103,6 +103,7 @@ class UserSerializer(serializers.ModelSerializer):
             'first_name',
             'last_name',
         ]
+        read_only_fields = ('id', 'username')
 
     def validate(self, attrs):
         attrs = super().validate(attrs)

rsconcept/backend/apps/users/tests/t_views.py

@@ -101,6 +101,10 @@ class TestUserUserProfileAPIView(EndpointTester):
         data = {'email': self.user2.email}
         self.executeBadData(data=data)
 
+        data = {'username': 'new_username'}
+        response = self.executeOK(data=data)
+        self.assertNotEqual(response.data['username'], data['username'])
+
         self.logout()
         self.executeForbidden()
 

rsconcept/frontend/package-lock.json

@@ -9,6 +9,7 @@
       "version": "1.0.0",
       "dependencies": {
         "@dagrejs/dagre": "^1.1.4",
+        "@hookform/resolvers": "^3.10.0",
         "@lezer/lr": "^1.4.2",
         "@tanstack/react-query": "^5.64.2",
         "@tanstack/react-query-devtools": "^5.64.2",
@@ -23,6 +24,7 @@
         "react": "^19.0.0",
         "react-dom": "^19.0.0",
         "react-error-boundary": "^5.0.0",
+        "react-hook-form": "^7.54.2",
         "react-icons": "^5.4.0",
         "react-intl": "^7.1.5",
         "react-router": "^7.1.3",
@@ -33,6 +35,7 @@
         "react-zoom-pan-pinch": "^3.6.1",
         "reactflow": "^11.11.4",
         "use-debounce": "^10.0.4",
+        "zod": "^3.24.1",
         "zustand": "^5.0.3"
       },
       "devDependencies": {
@@ -1698,6 +1701,15 @@
         "tslib": "2"
       }
     },
+    "node_modules/@hookform/resolvers": {
+      "version": "3.10.0",
+      "resolved": "https://registry.npmjs.org/@hookform/resolvers/-/resolvers-3.10.0.tgz",
+      "integrity": "sha512-79Dv+3mDF7i+2ajj7SkypSKHhl1cbln1OGavqrsF7p6mbUv11xpqpacPsGDCTRvCSjEEIez2ef1NveSVL3b0Ag==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react-hook-form": "^7.0.0"
+      }
+    },
     "node_modules/@humanfs/core": {
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/@humanfs/core/-/core-0.19.1.tgz",
@@ -9101,6 +9113,22 @@
         "react": ">=16.13.1"
       }
     },
+    "node_modules/react-hook-form": {
+      "version": "7.54.2",
+      "resolved": "https://registry.npmjs.org/react-hook-form/-/react-hook-form-7.54.2.tgz",
+      "integrity": "sha512-eHpAUgUjWbZocoQYUHposymRb4ZP6d0uwUnooL2uOybA9/3tPUvoAKqEWK1WaSiTxxOfTpffNZP7QwlnM3/gEg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=18.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/react-hook-form"
+      },
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17 || ^18 || ^19"
+      }
+    },
     "node_modules/react-icons": {
       "version": "5.4.0",
       "resolved": "https://registry.npmjs.org/react-icons/-/react-icons-5.4.0.tgz",
@@ -10932,7 +10960,6 @@
       "version": "3.24.1",
       "resolved": "https://registry.npmjs.org/zod/-/zod-3.24.1.tgz",
       "integrity": "sha512-muH7gBL9sI1nciMZV67X5fTKKBLtwpZ5VBp1vsOQzj1MhrBZ4wlVCm3gedKZWLp0Oyel8sIGfeiz54Su+OVT+A==",
-      "dev": true,
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"

rsconcept/frontend/package.json

@@ -13,6 +13,7 @@
   },
   "dependencies": {
     "@dagrejs/dagre": "^1.1.4",
+    "@hookform/resolvers": "^3.10.0",
     "@lezer/lr": "^1.4.2",
     "@tanstack/react-query": "^5.64.2",
     "@tanstack/react-query-devtools": "^5.64.2",
@@ -27,6 +28,7 @@
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-error-boundary": "^5.0.0",
+    "react-hook-form": "^7.54.2",
     "react-icons": "^5.4.0",
     "react-intl": "^7.1.5",
     "react-router": "^7.1.3",
@@ -37,6 +39,7 @@
     "react-zoom-pan-pinch": "^3.6.1",
     "reactflow": "^11.11.4",
     "use-debounce": "^10.0.4",
+    "zod": "^3.24.1",
     "zustand": "^5.0.3"
   },
   "devDependencies": {

rsconcept/frontend/src/app/ApplicationLayout.tsx

@@ -1,5 +1,4 @@
 import { Suspense } from 'react';
-import { ErrorBoundary } from 'react-error-boundary';
 import { Outlet } from 'react-router';
 
 import ConceptToaster from '@/app/ConceptToaster';
@@ -10,22 +9,10 @@ import ModalLoader from '@/components/ui/ModalLoader';
 import { useAppLayoutStore, useMainHeight, useViewportHeight } from '@/stores/appLayout';
 import { globals } from '@/utils/constants';
 
-import ErrorFallback from './ErrorFallback';
 import { GlobalDialogs } from './GlobalDialogs';
 import { GlobalTooltips } from './GlobalTooltips';
 import { NavigationState } from './Navigation/NavigationContext';
 
-const resetState = () => {
-  console.log('Resetting state after error fallback');
-};
-
-const logError = (error: Error, info: { componentStack?: string | null | undefined }) => {
-  console.log('Error fallback: ' + error.message);
-  if (info.componentStack) {
-    console.log('Component stack: ' + info.componentStack);
-  }
-};
-
 function ApplicationLayout() {
   const mainHeight = useMainHeight();
   const viewportHeight = useViewportHeight();
@@ -35,7 +22,6 @@ function ApplicationLayout() {
   const noFooter = useAppLayoutStore(state => state.noFooter);
 
   return (
-    <ErrorBoundary FallbackComponent={ErrorFallback} onError={logError} onReset={resetState}>
     <NavigationState>
       <div className='min-w-[20rem] antialiased h-full max-w-[120rem] mx-auto'>
         <ConceptToaster
@@ -69,7 +55,6 @@ function ApplicationLayout() {
         </div>
       </div>
     </NavigationState>
-    </ErrorBoundary>
   );
 }
 

rsconcept/frontend/src/app/ErrorFallback.tsx

@@ -1,13 +1,19 @@
-import { type FallbackProps } from 'react-error-boundary';
+import { useNavigate, useRouteError } from 'react-router';
 
 import InfoError from '@/components/info/InfoError';
 import Button from '@/components/ui/Button';
 
-function ErrorFallback({ error, resetErrorBoundary }: FallbackProps) {
+function ErrorFallback() {
+  const error = useRouteError();
+  const router = useNavigate();
+
+  function resetErrorBoundary() {
+    Promise.resolve(router('/')).catch(console.log);
+  }
   return (
     <div className='flex flex-col gap-3 my-3 items-center antialiased' role='alert'>
       <h1 className='my-2'>Что-то пошло не так!</h1>
-      <Button onClick={resetErrorBoundary} text='Попробовать еще раз' />
+      <Button onClick={resetErrorBoundary} text='Вернуться на главную' />
       <InfoError error={error as Error} />
     </div>
   );

rsconcept/frontend/src/app/Router.tsx

@@ -13,13 +13,14 @@ import LoginPage from '@/pages/LoginPage';
 import NotFoundPage from '@/pages/NotFoundPage';
 
 import ApplicationLayout from './ApplicationLayout';
+import ErrorFallback from './ErrorFallback';
 import { routes } from './urls';
 
 export const Router = createBrowserRouter([
   {
     path: '/',
     element: <ApplicationLayout />,
-    errorElement: <NotFoundPage />,
+    errorElement: <ErrorFallback />,
     loader: prefetchAuth,
     hydrateFallbackElement: <Loader />,
     children: [

rsconcept/frontend/src/app/urls.ts

@@ -24,18 +24,6 @@ export const routes = {
   database_schema: 'database-schema'
 };
 
-interface SchemaProps {
-  id: number | string;
-  tab: number;
-  version?: number | string;
-  active?: number | string;
-}
-
-interface OssProps {
-  id: number | string;
-  tab: number;
-}
-
 /**
  * Internal navigation URLs.
  */
@@ -58,12 +46,24 @@ export const urls = {
   schema: (id: number | string, version?: number | string) =>
     `/rsforms/${id}` + (version !== undefined ? `?v=${version}` : ''),
   oss: (id: number | string, tab?: number) => `/oss/${id}` + (tab !== undefined ? `?tab=${tab}` : ''),
-  schema_props: ({ id, tab, version, active }: SchemaProps) => {
+
+  schema_props: ({
+    id,
+    tab,
+    version,
+    active
+  }: {
+    id: number | string;
+    tab: number;
+    version?: number | string;
+    active?: number | string;
+  }) => {
     const versionStr = version !== undefined ? `v=${version}&` : '';
     const activeStr = active !== undefined ? `&active=${active}` : '';
     return `/rsforms/${id}?${versionStr}tab=${tab}${activeStr}`;
   },
-  oss_props: ({ id, tab }: OssProps) => {
+
+  oss_props: ({ id, tab }: { id: number | string; tab: number }) => {
     return `/oss/${id}?tab=${tab}`;
   }
 };

rsconcept/frontend/src/backend/apiTransport.ts

@@ -53,8 +53,11 @@ export function axiosGet<ResponseData>({ endpoint, options }: IAxiosGetRequest)
     .get<ResponseData>(endpoint, options)
     .then(response => response.data)
     .catch((error: Error | AxiosError) => {
+      if (error.name !== 'CanceledError') {
+        // Note: Ignore cancellation errors
         toast.error(extractErrorMessage(error));
         console.error(error);
+      }
       throw error;
     });
 }

rsconcept/frontend/src/backend/auth/api.ts

@@ -1,25 +1,46 @@
 import { queryOptions } from '@tanstack/react-query';
+import { z } from 'zod';
 
-import { axiosGet, axiosPost } from '@/backend/apiTransport';
+import { axiosGet, axiosPatch, axiosPost } from '@/backend/apiTransport';
 import { DELAYS } from '@/backend/configuration';
 import { ICurrentUser } from '@/models/user';
-import { information } from '@/utils/labels';
+import { errors, information } from '@/utils/labels';
 
 /**
  * Represents login data, used to authenticate users.
  */
-export interface IUserLoginDTO {
+export const UserLoginSchema = z.object({
-  username: string;
+  username: z.string().nonempty(errors.requiredField),
-  password: string;
+  password: z.string().nonempty(errors.requiredField)
-}
+});
+
+/**
+ * Represents login data, used to authenticate users.
+ */
+export type IUserLoginDTO = z.infer<typeof UserLoginSchema>;
 
 /**
  * Represents data needed to update password for current user.
  */
-export interface IChangePasswordDTO {
+export const ChangePasswordSchema = z
-  old_password: string;
+  .object({
-  new_password: string;
+    old_password: z.string().nonempty(errors.requiredField),
-}
+    new_password: z.string().nonempty(errors.requiredField),
+    new_password2: z.string().nonempty(errors.requiredField)
+  })
+  .refine(schema => schema.new_password === schema.new_password2, {
+    path: ['new_password2'],
+    message: errors.passwordsMismatch
+  })
+  .refine(schema => schema.old_password !== schema.new_password, {
+    path: ['new_password'],
+    message: errors.passwordsSame
+  });
+
+/**
+ * Represents data needed to update password for current user.
+ */
+export type IChangePasswordDTO = z.infer<typeof ChangePasswordSchema>;
 
 /**
  * Represents password reset request data.
@@ -69,7 +90,7 @@ export const authApi = {
       request: { data: data }
     }),
   changePassword: (data: IChangePasswordDTO) =>
-    axiosPost({
+    axiosPatch({
       endpoint: '/users/api/change-password',
       request: {
         data: data,

rsconcept/frontend/src/backend/auth/useLogin.tsx

@@ -1,8 +1,6 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
-import { libraryApi } from '@/backend/library/api';
+import { authApi, IUserLoginDTO } from './api';
-
-import { authApi } from './api';
 
 export const useLogin = () => {
   const client = useQueryClient();
@@ -10,14 +8,10 @@ export const useLogin = () => {
     mutationKey: ['login'],
     mutationFn: authApi.login,
     onSettled: () => client.invalidateQueries({ queryKey: [authApi.baseKey] }),
-    onSuccess: () => client.removeQueries({ queryKey: [libraryApi.baseKey] })
+    onSuccess: () => client.resetQueries()
   });
   return {
-    login: (
+    login: (data: IUserLoginDTO, onSuccess?: () => void) => mutation.mutate(data, { onSuccess }),
-      username: string, //
-      password: string,
-      onSuccess?: () => void
-    ) => mutation.mutate({ username, password }, { onSuccess }),
     isPending: mutation.isPending,
     error: mutation.error,
     reset: mutation.reset

rsconcept/frontend/src/backend/auth/useLogout.tsx

@@ -7,8 +7,7 @@ export const useLogout = () => {
   const mutation = useMutation({
     mutationKey: ['logout'],
     mutationFn: authApi.logout,
-    onSettled: () => client.invalidateQueries({ queryKey: [authApi.baseKey] }),
+    onSuccess: () => client.resetQueries()
-    onSuccess: () => client.removeQueries()
   });
   return { logout: (onSuccess?: () => void) => mutation.mutate(undefined, { onSuccess }) };
 };

rsconcept/frontend/src/backend/auth/useResetPassword.tsx

@@ -21,6 +21,7 @@ export const useResetPassword = () => {
       onSuccess?: () => void
     ) => resetMutation.mutate(data, { onSuccess }),
     isPending: resetMutation.isPending || validateMutation.isPending,
-    error: resetMutation.error ?? validateMutation.error
+    error: resetMutation.error ?? validateMutation.error,
+    reset: resetMutation.reset
   };
 };

rsconcept/frontend/src/backend/cctext/api.ts

@@ -1,5 +1,4 @@
 import { axiosPost } from '@/backend/apiTransport';
-import { ILexemeData, IWordFormPlain } from '@/models/language';
 
 /**
  * Represents API result for text output.
@@ -8,11 +7,26 @@ export interface ITextResult {
   result: string;
 }
 
+/**
+ * Represents wordform data used for backend communication.
+ */
+export interface IWordFormDTO {
+  text: string;
+  grams: string;
+}
+
+/**
+ * Represents lexeme response containing multiple {@link Wordform}s.
+ */
+export interface ILexemeResponse {
+  items: IWordFormDTO[];
+}
+
 export const cctextApi = {
   baseKey: 'cctext',
 
-  inflectText: (data: IWordFormPlain) =>
+  inflectText: (data: IWordFormDTO) =>
-    axiosPost<IWordFormPlain, ITextResult>({
+    axiosPost<IWordFormDTO, ITextResult>({
       endpoint: '/api/cctext/inflect',
       request: { data: data }
     }),
@@ -22,7 +36,7 @@ export const cctextApi = {
       request: { data: data }
     }),
   generateLexeme: (data: { text: string }) =>
-    axiosPost<{ text: string }, ILexemeData>({
+    axiosPost<{ text: string }, ILexemeResponse>({
       endpoint: '/api/cctext/generate-lexeme',
       request: { data: data }
     })

rsconcept/frontend/src/backend/cctext/useGenerateLexeme.tsx

@@ -1,9 +1,8 @@
 import { useMutation } from '@tanstack/react-query';
 
 import { DataCallback } from '@/backend/apiTransport';
-import { ILexemeData } from '@/models/language';
 
-import { cctextApi } from './api';
+import { cctextApi, ILexemeResponse } from './api';
 
 export const useGenerateLexeme = () => {
   const mutation = useMutation({
@@ -13,7 +12,7 @@ export const useGenerateLexeme = () => {
   return {
     generateLexeme: (
       data: { text: string }, //
-      onSuccess?: DataCallback<ILexemeData>
+      onSuccess?: DataCallback<ILexemeResponse>
     ) => mutation.mutate(data, { onSuccess })
   };
 };

rsconcept/frontend/src/backend/cctext/useInflectText.tsx

@@ -1,9 +1,8 @@
 import { useMutation } from '@tanstack/react-query';
 
 import { DataCallback } from '@/backend/apiTransport';
-import { IWordFormPlain } from '@/models/language';
 
-import { cctextApi, ITextResult } from './api';
+import { cctextApi, ITextResult, IWordFormDTO } from './api';
 
 export const useInflectText = () => {
   const mutation = useMutation({
@@ -12,7 +11,7 @@ export const useInflectText = () => {
   });
   return {
     inflectText: (
-      data: IWordFormPlain, //
+      data: IWordFormDTO, //
       onSuccess?: DataCallback<ITextResult>
     ) => mutation.mutate(data, { onSuccess })
   };

rsconcept/frontend/src/backend/library/api.ts

@@ -1,9 +1,10 @@
 import { queryOptions } from '@tanstack/react-query';
+import { z } from 'zod';
 
 import { axiosDelete, axiosGet, axiosPatch, axiosPost } from '@/backend/apiTransport';
 import { DELAYS } from '@/backend/configuration';
 import { ossApi } from '@/backend/oss/api';
-import { rsformsApi } from '@/backend/rsform/api';
+import { IRSFormDTO, rsformsApi } from '@/backend/rsform/api';
 import {
   AccessPolicy,
   ILibraryItem,
@@ -13,9 +14,10 @@ import {
   LibraryItemType,
   VersionID
 } from '@/models/library';
-import { ConstituentaID, IRSFormData } from '@/models/rsform';
+import { validateLocation } from '@/models/libraryAPI';
+import { ConstituentaID } from '@/models/rsform';
 import { UserID } from '@/models/user';
-import { information } from '@/utils/labels';
+import { errors, information } from '@/utils/labels';
 
 /**
  * Represents update data for renaming Location.
@@ -28,22 +30,49 @@ export interface IRenameLocationDTO {
 /**
  * Represents data, used for cloning {@link IRSForm}.
  */
-export interface IRSFormCloneDTO extends Omit<ILibraryItem, 'time_create' | 'time_update' | 'owner'> {
+export interface IRCloneLibraryItemDTO extends Omit<ILibraryItem, 'time_create' | 'time_update' | 'owner'> {
   items?: ConstituentaID[];
 }
 
 /**
  * Represents data, used for creating {@link IRSForm}.
  */
-export interface ILibraryCreateDTO extends Omit<ILibraryItem, 'time_create' | 'time_update' | 'id' | 'owner'> {
+export const CreateLibraryItemSchema = z
-  file?: File;
+  .object({
-  fileName?: string;
+    item_type: z.nativeEnum(LibraryItemType),
-}
+    title: z.string().optional(),
+    alias: z.string().optional(),
+    comment: z.string(),
+    visible: z.boolean(),
+    read_only: z.boolean(),
+    location: z.string(),
+    access_policy: z.nativeEnum(AccessPolicy),
+
+    file: z.instanceof(File).optional(),
+    fileName: z.string().optional()
+  })
+  .refine(data => validateLocation(data.location), {
+    path: ['location'],
+    message: errors.invalidLocation
+  })
+  .refine(data => !!data.file || !!data.title, {
+    path: ['title'],
+    message: errors.requiredField
+  })
+  .refine(data => !!data.file || !!data.alias, {
+    path: ['alias'],
+    message: errors.requiredField
+  });
+
+/**
+ * Represents data, used for creating {@link IRSForm}.
+ */
+export type ICreateLibraryItemDTO = z.infer<typeof CreateLibraryItemSchema>;
 
 /**
  * Represents update data for editing {@link ILibraryItem}.
  */
-export interface ILibraryUpdateDTO
+export interface IUpdateLibraryItemDTO
   extends Omit<ILibraryItem, 'time_create' | 'time_update' | 'access_policy' | 'location' | 'owner'> {}
 
 /**
@@ -60,7 +89,7 @@ export interface IVersionCreateDTO {
  */
 export interface IVersionCreatedResponse {
   version: number;
-  schema: IRSFormData;
+  schema: IRSFormDTO;
 }
 
 export const libraryApi = {
@@ -93,8 +122,8 @@ export const libraryApi = {
         })
     }),
 
-  createItem: (data: ILibraryCreateDTO) =>
+  createItem: (data: ICreateLibraryItemDTO) =>
-    axiosPost<ILibraryCreateDTO, ILibraryItem>({
+    axiosPost<ICreateLibraryItemDTO, ILibraryItem>({
       endpoint: !data.file ? '/api/library' : '/api/rsforms/create-detailed',
       request: {
         data: data,
@@ -108,8 +137,8 @@ export const libraryApi = {
             }
           }
     }),
-  updateItem: (data: ILibraryUpdateDTO) =>
+  updateItem: (data: IUpdateLibraryItemDTO) =>
-    axiosPatch<ILibraryUpdateDTO, ILibraryItem>({
+    axiosPatch<IUpdateLibraryItemDTO, ILibraryItem>({
       endpoint: `/api/library/${data.id}`,
       request: {
         data: data,
@@ -156,8 +185,8 @@ export const libraryApi = {
         successMessage: information.itemDestroyed
       }
     }),
-  cloneItem: (data: IRSFormCloneDTO) =>
+  cloneItem: (data: IRCloneLibraryItemDTO) =>
-    axiosPost<IRSFormCloneDTO, IRSFormData>({
+    axiosPost<IRCloneLibraryItemDTO, IRSFormDTO>({
       endpoint: `/api/library/${data.id}/clone`,
       request: {
         data: data,
@@ -182,7 +211,7 @@ export const libraryApi = {
       }
     }),
   versionRestore: ({ versionID }: { versionID: VersionID }) =>
-    axiosPatch<undefined, IRSFormData>({
+    axiosPatch<undefined, IRSFormDTO>({
       endpoint: `/api/versions/${versionID}/restore`,
       request: {
         successMessage: information.versionRestored

rsconcept/frontend/src/backend/library/useCloneItem.tsx

@@ -1,9 +1,9 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
 import { DataCallback } from '@/backend/apiTransport';
-import { IRSFormData } from '@/models/rsform';
 
-import { IRSFormCloneDTO, libraryApi } from './api';
+import { IRSFormDTO } from '../rsform/api';
+import { IRCloneLibraryItemDTO, libraryApi } from './api';
 
 export const useCloneItem = () => {
   const client = useQueryClient();
@@ -14,8 +14,8 @@ export const useCloneItem = () => {
   });
   return {
     cloneItem: (
-      data: IRSFormCloneDTO, //
+      data: IRCloneLibraryItemDTO, //
-      onSuccess?: DataCallback<IRSFormData>
+      onSuccess?: DataCallback<IRSFormDTO>
     ) => mutation.mutate(data, { onSuccess })
   };
 };

rsconcept/frontend/src/backend/library/useCreateItem.tsx

@@ -3,7 +3,7 @@ import { useMutation, useQueryClient } from '@tanstack/react-query';
 import { DataCallback } from '@/backend/apiTransport';
 import { ILibraryItem } from '@/models/library';
 
-import { ILibraryCreateDTO, libraryApi } from './api';
+import { ICreateLibraryItemDTO, libraryApi } from './api';
 
 export const useCreateItem = () => {
   const client = useQueryClient();
@@ -14,7 +14,7 @@ export const useCreateItem = () => {
   });
   return {
     createItem: (
-      data: ILibraryCreateDTO, //
+      data: ICreateLibraryItemDTO, //
       onSuccess?: DataCallback<ILibraryItem>
     ) => mutation.mutate(data, { onSuccess }),
     isPending: mutation.isPending,

rsconcept/frontend/src/backend/library/useDeleteItem.tsx

@@ -2,7 +2,8 @@ import { useMutation, useQueryClient } from '@tanstack/react-query';
 
 import { ossApi } from '@/backend/oss/api';
 import { rsformsApi } from '@/backend/rsform/api';
-import { ILibraryItem, LibraryItemID } from '@/models/library';
+import { LibraryItemID } from '@/models/library';
+import { PARAMETER } from '@/utils/constants';
 
 import { libraryApi } from './api';
 
@@ -12,13 +13,16 @@ export const useDeleteItem = () => {
     mutationKey: [libraryApi.baseKey, 'delete-item'],
     mutationFn: libraryApi.deleteItem,
     onSuccess: (_, variables) => {
-      client.setQueryData(libraryApi.libraryListKey, (prev: ILibraryItem[] | undefined) =>
+      client.invalidateQueries({ queryKey: libraryApi.libraryListKey }).catch(console.error);
-        prev?.filter(item => item.id !== variables)
+      setTimeout(
-      );
+        () =>
-      return Promise.allSettled([
+          void Promise.allSettled([
             client.invalidateQueries({ queryKey: [ossApi.baseKey] }),
-        client.invalidateQueries({ queryKey: rsformsApi.getRSFormQueryOptions({ itemID: variables }).queryKey })
+            client.resetQueries({ queryKey: rsformsApi.getRSFormQueryOptions({ itemID: variables }).queryKey }),
-      ]);
+            client.resetQueries({ queryKey: ossApi.getOssQueryOptions({ itemID: variables }).queryKey })
+          ]).catch(console.error),
+        PARAMETER.navigationDuration
+      );
     }
   });
   return {

rsconcept/frontend/src/backend/library/useSetAccessPolicy.tsx

@@ -1,9 +1,8 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
-import { ossApi } from '@/backend/oss/api';
+import { IOperationSchemaDTO, ossApi } from '@/backend/oss/api';
 import { rsformsApi } from '@/backend/rsform/api';
 import { AccessPolicy, ILibraryItem, LibraryItemID } from '@/models/library';
-import { IOperationSchemaData } from '@/models/oss';
 
 import { libraryApi } from './api';
 
@@ -14,7 +13,7 @@ export const useSetAccessPolicy = () => {
     mutationFn: libraryApi.setAccessPolicy,
     onSuccess: (_, variables) => {
       const ossKey = ossApi.getOssQueryOptions({ itemID: variables.itemID }).queryKey;
-      const ossData: IOperationSchemaData | undefined = client.getQueryData(ossKey);
+      const ossData: IOperationSchemaDTO | undefined = client.getQueryData(ossKey);
       if (ossData) {
         client.setQueryData(ossKey, { ...ossData, access_policy: variables.policy });
         return Promise.allSettled([

rsconcept/frontend/src/backend/library/useSetLocation.tsx

@@ -1,9 +1,8 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
-import { ossApi } from '@/backend/oss/api';
+import { IOperationSchemaDTO, ossApi } from '@/backend/oss/api';
 import { rsformsApi } from '@/backend/rsform/api';
 import { ILibraryItem, LibraryItemID } from '@/models/library';
-import { IOperationSchemaData } from '@/models/oss';
 
 import { libraryApi } from './api';
 
@@ -14,7 +13,7 @@ export const useSetLocation = () => {
     mutationFn: libraryApi.setLocation,
     onSuccess: (_, variables) => {
       const ossKey = ossApi.getOssQueryOptions({ itemID: variables.itemID }).queryKey;
-      const ossData: IOperationSchemaData | undefined = client.getQueryData(ossKey);
+      const ossData: IOperationSchemaDTO | undefined = client.getQueryData(ossKey);
       if (ossData) {
         client.setQueryData(ossKey, { ...ossData, location: variables.location });
         return Promise.allSettled([

rsconcept/frontend/src/backend/library/useSetOwner.tsx

@@ -1,9 +1,8 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
-import { ossApi } from '@/backend/oss/api';
+import { IOperationSchemaDTO, ossApi } from '@/backend/oss/api';
 import { rsformsApi } from '@/backend/rsform/api';
 import { ILibraryItem, LibraryItemID } from '@/models/library';
-import { IOperationSchemaData } from '@/models/oss';
 import { UserID } from '@/models/user';
 
 import { libraryApi } from './api';
@@ -15,7 +14,7 @@ export const useSetOwner = () => {
     mutationFn: libraryApi.setOwner,
     onSuccess: (_, variables) => {
       const ossKey = ossApi.getOssQueryOptions({ itemID: variables.itemID }).queryKey;
-      const ossData: IOperationSchemaData | undefined = client.getQueryData(ossKey);
+      const ossData: IOperationSchemaDTO | undefined = client.getQueryData(ossKey);
       if (ossData) {
         client.setQueryData(ossKey, { ...ossData, owner: variables.owner });
         return Promise.allSettled([

rsconcept/frontend/src/backend/library/useUpdateItem.tsx

@@ -1,11 +1,10 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
-import { ossApi } from '@/backend/oss/api';
+import { IOperationSchemaDTO, ossApi } from '@/backend/oss/api';
 import { ILibraryItem, LibraryItemType } from '@/models/library';
-import { IOperationSchemaData } from '@/models/oss';
-import { IRSFormData } from '@/models/rsform';
 
-import { ILibraryUpdateDTO, libraryApi } from './api';
+import { IRSFormDTO } from '../rsform/api';
+import { IUpdateLibraryItemDTO, libraryApi } from './api';
 
 export const useUpdateItem = () => {
   const client = useQueryClient();
@@ -17,11 +16,11 @@ export const useUpdateItem = () => {
       client.setQueryData(libraryApi.libraryListKey, (prev: ILibraryItem[] | undefined) =>
         prev?.map(item => (item.id === data.id ? data : item))
       );
-      client.setQueryData(itemKey, (prev: IRSFormData | IOperationSchemaData | undefined) =>
+      client.setQueryData(itemKey, (prev: IRSFormDTO | IOperationSchemaDTO | undefined) =>
         !prev ? undefined : { ...prev, ...data }
       );
       if (data.item_type === LibraryItemType.RSFORM) {
-        const schema: IRSFormData | undefined = client.getQueryData(itemKey);
+        const schema: IRSFormDTO | undefined = client.getQueryData(itemKey);
         if (schema) {
           return Promise.allSettled(
             schema.oss.map(item =>
@@ -33,6 +32,6 @@ export const useUpdateItem = () => {
     }
   });
   return {
-    updateItem: (data: ILibraryUpdateDTO) => mutation.mutate(data)
+    updateItem: (data: IUpdateLibraryItemDTO) => mutation.mutate(data)
   };
 };

rsconcept/frontend/src/backend/library/useVersionDelete.tsx

@@ -1,8 +1,7 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
-import { rsformsApi } from '@/backend/rsform/api';
+import { IRSFormDTO, rsformsApi } from '@/backend/rsform/api';
 import { LibraryItemID, VersionID } from '@/models/library';
-import { IRSFormData } from '@/models/rsform';
 
 import { libraryApi } from './api';
 
@@ -14,7 +13,7 @@ export const useVersionDelete = () => {
     onSuccess: (_, variables) => {
       client.setQueryData(
         rsformsApi.getRSFormQueryOptions({ itemID: variables.itemID }).queryKey,
-        (prev: IRSFormData | undefined) =>
+        (prev: IRSFormDTO | undefined) =>
           !prev
             ? undefined
             : {

rsconcept/frontend/src/backend/library/useVersionUpdate.tsx

@@ -1,8 +1,7 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
-import { rsformsApi } from '@/backend/rsform/api';
+import { IRSFormDTO, rsformsApi } from '@/backend/rsform/api';
 import { IVersionData, VersionID } from '@/models/library';
-import { IRSFormData } from '@/models/rsform';
 
 import { libraryApi } from './api';
 
@@ -14,7 +13,7 @@ export const useVersionUpdate = () => {
     onSuccess: data => {
       client.setQueryData(
         rsformsApi.getRSFormQueryOptions({ itemID: data.item }).queryKey,
-        (prev: IRSFormData | undefined) =>
+        (prev: IRSFormDTO | undefined) =>
           !prev
             ? undefined
             : {

rsconcept/frontend/src/backend/oss/OssLoader.ts

@@ -2,29 +2,24 @@
  * Module: OSS data loading and processing.
  */
 
-import { Graph } from './Graph';
+import { Graph } from '@/models/Graph';
-import { ILibraryItem, LibraryItemID } from './library';
+import { ILibraryItem, LibraryItemID } from '@/models/library';
-import {
+import { IOperation, IOperationSchema, IOperationSchemaStats, OperationID, OperationType } from '@/models/oss';
-  IOperation,
+
-  IOperationSchema,
+import { IOperationSchemaDTO } from './api';
-  IOperationSchemaData,
-  IOperationSchemaStats,
-  OperationID,
-  OperationType
-} from './oss';
 
 /**
- * Loads data into an {@link IOperationSchema} based on {@link IOperationSchemaData}.
+ * Loads data into an {@link IOperationSchema} based on {@link IOperationSchemaDTO}.
  *
  */
 export class OssLoader {
-  private oss: IOperationSchemaData;
+  private oss: IOperationSchemaDTO;
   private graph: Graph = new Graph();
   private operationByID = new Map<OperationID, IOperation>();
   private schemaIDs: LibraryItemID[] = [];
   private items: ILibraryItem[];
 
-  constructor(input: IOperationSchemaData, items: ILibraryItem[]) {
+  constructor(input: IOperationSchemaDTO, items: ILibraryItem[]) {
     this.oss = input;
     this.items = items;
   }

rsconcept/frontend/src/backend/oss/api.ts

@@ -2,18 +2,33 @@ import { queryOptions } from '@tanstack/react-query';
 
 import { axiosDelete, axiosGet, axiosPatch, axiosPost } from '@/backend/apiTransport';
 import { DELAYS } from '@/backend/configuration';
-import { ILibraryItem, LibraryItemID } from '@/models/library';
+import { ILibraryItem, ILibraryItemData, LibraryItemID } from '@/models/library';
 import {
+  IArgument,
   ICstSubstitute,
-  IOperationData,
+  ICstSubstituteEx,
+  IOperation,
   IOperationPosition,
-  IOperationSchemaData,
   OperationID,
   OperationType
 } from '@/models/oss';
 import { ConstituentaID, IConstituentaReference, ITargetCst } from '@/models/rsform';
 import { information } from '@/utils/labels';
 
+/**
+ * Represents {@link IOperation} data from server.
+ */
+export interface IOperationDTO extends Omit<IOperation, 'substitutions' | 'arguments'> {}
+
+/**
+ * Represents backend data for {@link IOperationSchema}.
+ */
+export interface IOperationSchemaDTO extends ILibraryItemData {
+  items: IOperationDTO[];
+  arguments: IArgument[];
+  substitutions: ICstSubstituteEx[];
+}
+
 /**
  * Represents {@link IOperation} data, used in creation process.
  */
@@ -36,8 +51,8 @@ export interface IOperationCreateDTO {
  * Represents data response when creating {@link IOperation}.
  */
 export interface IOperationCreatedResponse {
-  new_operation: IOperationData;
+  new_operation: IOperationDTO;
-  oss: IOperationSchemaData;
+  oss: IOperationSchemaDTO;
 }
 
 /**
@@ -61,7 +76,7 @@ export interface IOperationDeleteDTO extends ITargetOperation {
  */
 export interface IInputCreatedResponse {
   new_schema: ILibraryItem;
-  oss: IOperationSchemaData;
+  oss: IOperationSchemaDTO;
 }
 
 /**
@@ -102,7 +117,7 @@ export const ossApi = {
       queryFn: meta =>
         !itemID
           ? undefined
-          : axiosGet<IOperationSchemaData>({
+          : axiosGet<IOperationSchemaDTO>({
               endpoint: `/api/oss/${itemID}/details`,
               options: { signal: meta.signal }
             })
@@ -135,7 +150,7 @@ export const ossApi = {
       }
     }),
   operationDelete: ({ itemID, data }: { itemID: LibraryItemID; data: IOperationDeleteDTO }) =>
-    axiosDelete<IOperationDeleteDTO, IOperationSchemaData>({
+    axiosDelete<IOperationDeleteDTO, IOperationSchemaDTO>({
       endpoint: `/api/oss/${itemID}/delete-operation`,
       request: {
         data: data,
@@ -151,7 +166,7 @@ export const ossApi = {
       }
     }),
   inputUpdate: ({ itemID, data }: { itemID: LibraryItemID; data: IInputUpdateDTO }) =>
-    axiosPatch<IInputUpdateDTO, IOperationSchemaData>({
+    axiosPatch<IInputUpdateDTO, IOperationSchemaDTO>({
       endpoint: `/api/oss/${itemID}/set-input`,
       request: {
         data: data,
@@ -159,7 +174,7 @@ export const ossApi = {
       }
     }),
   operationUpdate: ({ itemID, data }: { itemID: LibraryItemID; data: IOperationUpdateDTO }) =>
-    axiosPatch<IOperationUpdateDTO, IOperationSchemaData>({
+    axiosPatch<IOperationUpdateDTO, IOperationSchemaDTO>({
       endpoint: `/api/oss/${itemID}/update-operation`,
       request: {
         data: data,
@@ -167,7 +182,7 @@ export const ossApi = {
       }
     }),
   operationExecute: ({ itemID, data }: { itemID: LibraryItemID; data: ITargetOperation }) =>
-    axiosPost<ITargetOperation, IOperationSchemaData>({
+    axiosPost<ITargetOperation, IOperationSchemaDTO>({
       endpoint: `/api/oss/${itemID}/execute-operation`,
       request: {
         data: data,
@@ -176,7 +191,7 @@ export const ossApi = {
     }),
 
   relocateConstituents: ({ itemID, data }: { itemID: LibraryItemID; data: ICstRelocateDTO }) =>
-    axiosPost<ICstRelocateDTO, IOperationSchemaData>({
+    axiosPost<ICstRelocateDTO, IOperationSchemaDTO>({
       endpoint: `/api/oss/${itemID}/relocate-constituents`,
       request: {
         data: data,

rsconcept/frontend/src/backend/oss/useOSS.tsx

@@ -1,8 +1,8 @@
 import { useQuery, useSuspenseQuery } from '@tanstack/react-query';
 
 import { useLibrary, useLibrarySuspense } from '@/backend/library/useLibrary';
+import { OssLoader } from '@/backend/oss/OssLoader';
 import { LibraryItemID } from '@/models/library';
-import { OssLoader } from '@/models/OssLoader';
 
 import { queryClient } from '../queryClient';
 import { ossApi } from './api';

rsconcept/frontend/src/backend/oss/useOperationCreate.tsx

@@ -3,9 +3,8 @@ import { useMutation, useQueryClient } from '@tanstack/react-query';
 import { DataCallback } from '@/backend/apiTransport';
 import { useUpdateTimestamp } from '@/backend/library/useUpdateTimestamp';
 import { LibraryItemID } from '@/models/library';
-import { IOperationData } from '@/models/oss';
 
-import { IOperationCreateDTO, ossApi } from './api';
+import { IOperationCreateDTO, IOperationDTO, ossApi } from './api';
 
 export const useOperationCreate = () => {
   const client = useQueryClient();
@@ -24,7 +23,7 @@ export const useOperationCreate = () => {
         itemID: LibraryItemID; //
         data: IOperationCreateDTO;
       },
-      onSuccess?: DataCallback<IOperationData>
+      onSuccess?: DataCallback<IOperationDTO>
     ) => mutation.mutate(data, { onSuccess: response => onSuccess?.(response.new_operation) })
   };
 };

rsconcept/frontend/src/backend/rsform/RSFormLoader.ts

@@ -2,27 +2,29 @@
  * Module: RSForm data loading and processing.
  */
 
-import { Graph } from './Graph';
+import { Graph } from '@/models/Graph';
-import { LibraryItemID } from './library';
+import { LibraryItemID } from '@/models/library';
-import { ConstituentaID, CstType, IConstituenta, IRSForm, IRSFormData, IRSFormStats } from './rsform';
+import { ConstituentaID, CstType, IConstituenta, IRSForm, IRSFormStats } from '@/models/rsform';
-import { inferClass, inferStatus, inferTemplate, isBaseSet, isFunctional } from './rsformAPI';
+import { inferClass, inferStatus, inferTemplate, isBaseSet, isFunctional } from '@/models/rsformAPI';
-import { ParsingStatus, ValueClass } from './rslang';
+import { ParsingStatus, ValueClass } from '@/models/rslang';
-import { extractGlobals, isSimpleExpression, splitTemplateDefinition } from './rslangAPI';
+import { extractGlobals, isSimpleExpression, splitTemplateDefinition } from '@/models/rslangAPI';
+
+import { IRSFormDTO } from './api';
 
 /**
- * Loads data into an {@link IRSForm} based on {@link IRSFormData}.
+ * Loads data into an {@link IRSForm} based on {@link IRSFormDTO}.
  *
  * @remarks
  * This function processes the provided input, initializes the IRSForm, and calculates statistics
  * based on the loaded data. It also establishes dependencies between concepts in the graph.
  */
 export class RSFormLoader {
-  private schema: IRSFormData;
+  private schema: IRSFormDTO;
   private graph: Graph = new Graph();
   private cstByAlias = new Map<string, IConstituenta>();
   private cstByID = new Map<ConstituentaID, IConstituenta>();
 
-  constructor(input: IRSFormData) {
+  constructor(input: IRSFormDTO) {
     this.schema = input;
   }
 
@@ -159,7 +161,8 @@ export class RSFormLoader {
       } else if (sources.size !== 1) {
         return false;
       } else {
-        const base = this.cstByID.get(sources.values().next().value!)!;
+        const cstID = sources.values().next().value!;
+        const base = this.cstByID.get(cstID)!;
         return !isFunctional(base.cst_type) || splitTemplateDefinition(base.definition_formal).head !== expression.head;
       }
     };

rsconcept/frontend/src/backend/rsform/api.ts

@@ -2,20 +2,42 @@ import { queryOptions } from '@tanstack/react-query';
 
 import { axiosDelete, axiosGet, axiosPatch, axiosPost } from '@/backend/apiTransport';
 import { DELAYS } from '@/backend/configuration';
-import { LibraryItemID, VersionID } from '@/models/library';
+import { ILibraryItemReference, ILibraryItemVersioned, LibraryItemID, VersionID } from '@/models/library';
 import { ICstSubstitute, ICstSubstitutions } from '@/models/oss';
 import {
   ConstituentaID,
   CstType,
   IConstituentaList,
   IConstituentaMeta,
-  IRSFormData,
+  IInheritanceInfo,
   ITargetCst,
   TermForm
 } from '@/models/rsform';
-import { IExpressionParse } from '@/models/rslang';
+import { IArgumentInfo, IExpressionParse, ParsingStatus, ValueClass } from '@/models/rslang';
 import { information } from '@/utils/labels';
 
+/**
+ * Represents {@link IConstituenta} data from server.
+ */
+export interface IConstituentaDTO extends IConstituentaMeta {
+  parse: {
+    status: ParsingStatus;
+    valueClass: ValueClass;
+    typification: string;
+    syntaxTree: string;
+    args: IArgumentInfo[];
+  };
+}
+
+/**
+ * Represents data for {@link IRSForm} provided by backend.
+ */
+export interface IRSFormDTO extends ILibraryItemVersioned {
+  items: IConstituentaDTO[];
+  inheritance: IInheritanceInfo[];
+  oss: ILibraryItemReference[];
+}
+
 /**
  * Represents data, used for uploading {@link IRSForm} as file.
  */
@@ -46,7 +68,7 @@ export interface ICstCreateDTO {
  */
 export interface ICstCreatedResponse {
   new_cst: IConstituentaMeta;
-  schema: IRSFormData;
+  schema: IRSFormDTO;
 }
 
 /**
@@ -85,7 +107,7 @@ export interface ICstMoveDTO {
  */
 export interface IProduceStructureResponse {
   cst_list: ConstituentaID[];
-  schema: IRSFormData;
+  schema: IRSFormDTO;
 }
 
 /**
@@ -117,7 +139,7 @@ export const rsformsApi = {
       queryFn: meta =>
         !itemID
           ? undefined
-          : axiosGet<IRSFormData>({
+          : axiosGet<IRSFormDTO>({
               endpoint: version ? `/api/library/${itemID}/versions/${version}` : `/api/rsforms/${itemID}/details`,
               options: { signal: meta.signal }
             })
@@ -130,7 +152,7 @@ export const rsformsApi = {
       options: { responseType: 'blob' }
     }),
   upload: (data: IRSFormUploadDTO) =>
-    axiosPatch<IRSFormUploadDTO, IRSFormData>({
+    axiosPatch<IRSFormUploadDTO, IRSFormDTO>({
       endpoint: `/api/rsforms/${data.itemID}/load-trs`,
       request: {
         data: data,
@@ -160,7 +182,7 @@ export const rsformsApi = {
       }
     }),
   cstDelete: ({ itemID, data }: { itemID: LibraryItemID; data: IConstituentaList }) =>
-    axiosDelete<IConstituentaList, IRSFormData>({
+    axiosDelete<IConstituentaList, IRSFormDTO>({
       endpoint: `/api/rsforms/${itemID}/delete-multiple-cst`,
       request: {
         data: data,
@@ -176,7 +198,7 @@ export const rsformsApi = {
       }
     }),
   cstSubstitute: ({ itemID, data }: { itemID: LibraryItemID; data: ICstSubstitutions }) =>
-    axiosPatch<ICstSubstitutions, IRSFormData>({
+    axiosPatch<ICstSubstitutions, IRSFormDTO>({
       endpoint: `/api/rsforms/${itemID}/substitute`,
       request: {
         data: data,
@@ -184,7 +206,7 @@ export const rsformsApi = {
       }
     }),
   cstMove: ({ itemID, data }: { itemID: LibraryItemID; data: ICstMoveDTO }) =>
-    axiosPatch<ICstMoveDTO, IRSFormData>({
+    axiosPatch<ICstMoveDTO, IRSFormDTO>({
       endpoint: `/api/rsforms/${itemID}/move-cst`,
       request: { data: data }
     }),
@@ -198,7 +220,7 @@ export const rsformsApi = {
       }
     }),
   inlineSynthesis: ({ itemID, data }: { itemID: LibraryItemID; data: IInlineSynthesisDTO }) =>
-    axiosPost<IInlineSynthesisDTO, IRSFormData>({
+    axiosPost<IInlineSynthesisDTO, IRSFormDTO>({
       endpoint: `/api/rsforms/${itemID}/inline-synthesis`,
       request: {
         data: data,
@@ -206,12 +228,12 @@ export const rsformsApi = {
       }
     }),
   restoreOrder: ({ itemID }: { itemID: LibraryItemID }) =>
-    axiosPatch<undefined, IRSFormData>({
+    axiosPatch<undefined, IRSFormDTO>({
       endpoint: `/api/rsforms/${itemID}/restore-order`,
       request: { successMessage: information.reorderComplete }
     }),
   resetAliases: ({ itemID }: { itemID: LibraryItemID }) =>
-    axiosPatch<undefined, IRSFormData>({
+    axiosPatch<undefined, IRSFormDTO>({
       endpoint: `/api/rsforms/${itemID}/reset-aliases`,
       request: { successMessage: information.reindexComplete }
     }),

rsconcept/frontend/src/backend/rsform/useInlineSynthesis.tsx

@@ -4,9 +4,8 @@ import { DataCallback } from '@/backend/apiTransport';
 import { useUpdateTimestamp } from '@/backend/library/useUpdateTimestamp';
 import { ossApi } from '@/backend/oss/api';
 import { LibraryItemID } from '@/models/library';
-import { IRSFormData } from '@/models/rsform';
 
-import { IInlineSynthesisDTO, rsformsApi } from './api';
+import { IInlineSynthesisDTO, IRSFormDTO, rsformsApi } from './api';
 
 export const useInlineSynthesis = () => {
   const client = useQueryClient();
@@ -33,7 +32,7 @@ export const useInlineSynthesis = () => {
         itemID: LibraryItemID; //
         data: IInlineSynthesisDTO;
       },
-      onSuccess?: DataCallback<IRSFormData>
+      onSuccess?: DataCallback<IRSFormDTO>
     ) => mutation.mutate(data, { onSuccess })
   };
 };

rsconcept/frontend/src/backend/rsform/useRSForm.tsx

@@ -1,7 +1,7 @@
 import { useQuery, useSuspenseQuery } from '@tanstack/react-query';
 
+import { RSFormLoader } from '@/backend/rsform/RSFormLoader';
 import { LibraryItemID, VersionID } from '@/models/library';
-import { RSFormLoader } from '@/models/RSFormLoader';
 
 import { queryClient } from '../queryClient';
 import { rsformsApi } from './api';

rsconcept/frontend/src/backend/rsform/useRSForms.tsx

@@ -1,7 +1,7 @@
 import { useQueries } from '@tanstack/react-query';
 
+import { RSFormLoader } from '@/backend/rsform/RSFormLoader';
 import { LibraryItemID } from '@/models/library';
-import { RSFormLoader } from '@/models/RSFormLoader';
 
 import { DELAYS } from '../configuration';
 import { rsformsApi } from './api';

rsconcept/frontend/src/backend/users/api.ts

@@ -1,14 +1,45 @@
 import { queryOptions } from '@tanstack/react-query';
+import { z } from 'zod';
 
 import { axiosGet, axiosPatch, axiosPost } from '@/backend/apiTransport';
 import { DELAYS } from '@/backend/configuration';
-import { IUser, IUserInfo, IUserProfile, IUserSignupData } from '@/models/user';
+import { IUserInfo, IUserProfile } from '@/models/user';
-import { information } from '@/utils/labels';
+import { patterns } from '@/utils/constants';
+import { errors, information } from '@/utils/labels';
+
+/**
+ * Represents signup data, used to create new users.
+ */
+export const UserSignupSchema = z
+  .object({
+    username: z.string().nonempty(errors.requiredField).regex(RegExp(patterns.login), errors.loginFormat),
+    email: z.string().email(errors.emailField),
+    first_name: z.string(),
+    last_name: z.string(),
+
+    password: z.string().nonempty(errors.requiredField),
+    password2: z.string().nonempty(errors.requiredField)
+  })
+  .refine(schema => schema.password === schema.password2, { path: ['password2'], message: errors.passwordsMismatch });
+
+/**
+ * Represents signup data, used to create new users.
+ */
+export type IUserSignupDTO = z.infer<typeof UserSignupSchema>;
 
 /**
  * Represents user data, intended to update user profile in persistent storage.
  */
-export interface IUpdateProfileDTO extends Omit<IUser, 'is_staff' | 'id'> {}
+export const UpdateProfileSchema = z.object({
+  email: z.string().email(errors.emailField),
+  first_name: z.string(),
+  last_name: z.string()
+});
+
+/**
+ * Represents user data, intended to update user profile in persistent storage.
+ */
+export type IUpdateProfileDTO = z.infer<typeof UpdateProfileSchema>;
 
 export const usersApi = {
   baseKey: 'users',
@@ -33,8 +64,8 @@ export const usersApi = {
         })
     }),
 
-  signup: (data: IUserSignupData) =>
+  signup: (data: IUserSignupDTO) =>
-    axiosPost<IUserSignupData, IUserProfile>({
+    axiosPost<IUserSignupDTO, IUserProfile>({
       endpoint: '/users/api/signup',
       request: {
         data: data,

rsconcept/frontend/src/backend/users/useSignup.tsx

@@ -1,8 +1,8 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
 import { DataCallback } from '@/backend/apiTransport';
-import { usersApi } from '@/backend/users/api';
+import { IUserSignupDTO, usersApi } from '@/backend/users/api';
-import { IUserProfile, IUserSignupData } from '@/models/user';
+import { IUserProfile } from '@/models/user';
 
 export const useSignup = () => {
   const client = useQueryClient();
@@ -13,7 +13,7 @@ export const useSignup = () => {
   });
   return {
     signup: (
-      data: IUserSignupData, //
+      data: IUserSignupDTO, //
       onSuccess?: DataCallback<IUserProfile>
     ) => mutation.mutate(data, { onSuccess }),
     isPending: mutation.isPending,

rsconcept/frontend/src/backend/users/useUpdateProfile.tsx

@@ -1,5 +1,8 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
+import { IUserProfile } from '@/models/user';
+
+import { DataCallback } from '../apiTransport';
 import { IUpdateProfileDTO, usersApi } from './api';
 
 export const useUpdateProfile = () => {
@@ -13,7 +16,8 @@ export const useUpdateProfile = () => {
     }
   });
   return {
-    updateProfile: (data: IUpdateProfileDTO) => mutation.mutate(data),
+    updateProfile: (data: IUpdateProfileDTO, onSuccess?: DataCallback<IUserProfile>) =>
+      mutation.mutate(data, { onSuccess }),
     isPending: mutation.isPending,
     error: mutation.error,
     reset: mutation.reset

rsconcept/frontend/src/components/props.d.ts

@@ -1,5 +1,6 @@
 // =========== Module contains interfaces for common UI elements. ==========
 import React from 'react';
+import { FieldError } from 'react-hook-form';
 
 export namespace CProps {
   /**
@@ -35,6 +36,13 @@ export namespace CProps {
     hideTitle?: boolean;
   }
 
+  /**
+   * Represents an object that can have an error message.
+   */
+  export interface ErrorProcessing {
+    error?: FieldError;
+  }
+
   /**
    * Represents `control` component with optional title and configuration options.
    *

rsconcept/frontend/src/components/select/PickConstituenta.tsx

@@ -17,6 +17,9 @@ import { describeConstituenta } from '@/utils/labels';
 
 interface PickConstituentaProps extends CProps.Styling {
   id?: string;
+  value?: IConstituenta;
+  onChange: (newValue: IConstituenta) => void;
+
   prefixID: string;
   data?: IConstituenta[];
   rows?: number;
@@ -25,9 +28,6 @@ interface PickConstituentaProps extends CProps.Styling {
   onBeginFilter?: (cst: IConstituenta) => boolean;
   describeFunc?: (cst: IConstituenta) => string;
   matchFunc?: (cst: IConstituenta, filter: string) => boolean;
-
-  value?: IConstituenta;
-  onSelectValue: (newValue: IConstituenta) => void;
 }
 
 const columnHelper = createColumnHelper<IConstituenta>();
@@ -42,7 +42,7 @@ function PickConstituenta({
   describeFunc = describeConstituenta,
   matchFunc = (cst, filter) => matchConstituenta(cst, filter, CstMatchMode.ALL),
   onBeginFilter,
-  onSelectValue,
+  onChange,
   className,
   ...restProps
 }: PickConstituentaProps) {
@@ -110,7 +110,7 @@ function PickConstituenta({
             <p>Измените параметры фильтра</p>
           </NoData>
         }
-        onRowClicked={onSelectValue}
+        onRowClicked={onChange}
       />
     </div>
   );

rsconcept/frontend/src/components/select/PickMultiConstituenta.tsx

@@ -18,15 +18,15 @@ import ToolbarGraphSelection from './ToolbarGraphSelection';
 
 interface PickMultiConstituentaProps extends CProps.Styling {
   id?: string;
+  value: ConstituentaID[];
+  onChange: React.Dispatch<React.SetStateAction<ConstituentaID[]>>;
+
   schema: IRSForm;
   data: IConstituenta[];
 
   prefixID: string;
   rows?: number;
   noBorder?: boolean;
-
-  selected: ConstituentaID[];
-  setSelected: React.Dispatch<React.SetStateAction<ConstituentaID[]>>;
 }
 
 const columnHelper = createColumnHelper<IConstituenta>();
@@ -38,8 +38,8 @@ function PickMultiConstituenta({
   prefixID,
   rows,
   noBorder,
-  selected,
+  value,
-  setSelected,
+  onChange,
   className,
   ...restProps
 }: PickMultiConstituentaProps) {
@@ -74,10 +74,10 @@ function PickMultiConstituenta({
     }
     const newRowSelection: RowSelectionState = {};
     filtered.forEach((cst, index) => {
-      newRowSelection[String(index)] = selected.includes(cst.id);
+      newRowSelection[String(index)] = value.includes(cst.id);
     });
     setRowSelection(newRowSelection);
-  }, [filtered, setRowSelection, selected]);
+  }, [filtered, setRowSelection, value]);
 
   useEffect(() => {
     if (data.length === 0) {
@@ -91,7 +91,7 @@ function PickMultiConstituenta({
 
   function handleRowSelection(updater: React.SetStateAction<RowSelectionState>) {
     if (!data) {
-      setSelected([]);
+      onChange([]);
     } else {
       const newRowSelection = typeof updater === 'function' ? updater(rowSelection) : updater;
       const newSelection: ConstituentaID[] = [];
@@ -100,7 +100,7 @@ function PickMultiConstituenta({
           newSelection.push(cst.id);
         }
       });
-      setSelected(prev => [...prev.filter(cst_id => !filtered.find(cst => cst.id === cst_id)), ...newSelection]);
+      onChange(prev => [...prev.filter(cst_id => !filtered.find(cst => cst.id === cst_id)), ...newSelection]);
     }
   }
 
@@ -122,7 +122,7 @@ function PickMultiConstituenta({
     <div className={clsx(noBorder ? '' : 'border', className)} {...restProps}>
       <div className={clsx('px-3 flex justify-between items-center', 'clr-input', 'border-b', 'rounded-t-md')}>
         <div className='w-[24ch] select-none whitespace-nowrap'>
-          {data.length > 0 ? `Выбраны ${selected.length} из ${data.length}` : 'Конституенты'}
+          {data.length > 0 ? `Выбраны ${value.length} из ${data.length}` : 'Конституенты'}
         </div>
         <SearchBar
           id='dlg_constituents_search'
@@ -135,9 +135,9 @@ function PickMultiConstituenta({
           graph={foldedGraph}
           isCore={cstID => isBasicConcept(schema.cstByID.get(cstID)?.cst_type)}
           isOwned={cstID => !schema.cstByID.get(cstID)?.is_inherited}
-          selected={selected}
+          value={value}
-          setSelected={setSelected}
+          onChange={onChange}
-          emptySelection={selected.length === 0}
+          emptySelection={value.length === 0}
           className='w-fit'
         />
       </div>

rsconcept/frontend/src/components/select/PickMultiOperation.tsx

@@ -12,36 +12,36 @@ import NoData from '@/components/ui/NoData';
 import { IOperation, OperationID } from '@/models/oss';
 
 interface PickMultiOperationProps extends CProps.Styling {
-  rows?: number;
+  value: OperationID[];
+  onChange: React.Dispatch<React.SetStateAction<OperationID[]>>;
 
   items: IOperation[];
-  selected: OperationID[];
+  rows?: number;
-  setSelected: React.Dispatch<React.SetStateAction<OperationID[]>>;
 }
 
 const columnHelper = createColumnHelper<IOperation>();
 
-function PickMultiOperation({ rows, items, selected, setSelected, className, ...restProps }: PickMultiOperationProps) {
+function PickMultiOperation({ rows, items, value, onChange, className, ...restProps }: PickMultiOperationProps) {
-  const selectedItems = selected.map(itemID => items.find(item => item.id === itemID)!);
+  const selectedItems = value.map(itemID => items.find(item => item.id === itemID)!);
-  const nonSelectedItems = items.filter(item => !selected.includes(item.id));
+  const nonSelectedItems = items.filter(item => !value.includes(item.id));
   const [lastSelected, setLastSelected] = useState<IOperation | undefined>(undefined);
 
   function handleDelete(operation: OperationID) {
-    setSelected(prev => prev.filter(item => item !== operation));
+    onChange(prev => prev.filter(item => item !== operation));
   }
 
   function handleSelect(operation?: IOperation) {
     if (operation) {
       setLastSelected(operation);
-      setSelected(prev => [...prev, operation.id]);
+      onChange(prev => [...prev, operation.id]);
       setTimeout(() => setLastSelected(undefined), 1000);
     }
   }
 
   function handleMoveUp(operation: OperationID) {
-    const index = selected.indexOf(operation);
+    const index = value.indexOf(operation);
     if (index > 0) {
-      setSelected(prev => {
+      onChange(prev => {
         const newSelected = [...prev];
         newSelected[index] = newSelected[index - 1];
         newSelected[index - 1] = operation;
@@ -51,9 +51,9 @@ function PickMultiOperation({ rows, items, selected, setSelected, className, ...
   }
 
   function handleMoveDown(operation: OperationID) {
-    const index = selected.indexOf(operation);
+    const index = value.indexOf(operation);
-    if (index < selected.length - 1) {
+    if (index < value.length - 1) {
-      setSelected(prev => {
+      onChange(prev => {
         const newSelected = [...prev];
         newSelected[index] = newSelected[index + 1];
         newSelected[index + 1] = operation;
@@ -118,7 +118,7 @@ function PickMultiOperation({ rows, items, selected, setSelected, className, ...
         noBorder
         items={nonSelectedItems} // prettier: split-line
         value={lastSelected}
-        onSelectValue={handleSelect}
+        onChange={handleSelect}
       />
       <DataTable
         dense

rsconcept/frontend/src/components/select/PickSchema.tsx

@@ -19,14 +19,15 @@ import SelectLocation from './SelectLocation';
 
 interface PickSchemaProps extends CProps.Styling {
   id?: string;
+  value?: LibraryItemID;
+  onChange: (newValue: LibraryItemID) => void;
+
   initialFilter?: string;
   rows?: number;
 
   items: ILibraryItem[];
   itemType: LibraryItemType;
-  value?: LibraryItemID;
   baseFilter?: (target: ILibraryItem) => boolean;
-  onSelectValue: (newValue: LibraryItemID) => void;
 }
 
 const columnHelper = createColumnHelper<ILibraryItem>();
@@ -38,7 +39,7 @@ function PickSchema({
   items,
   itemType,
   value,
-  onSelectValue,
+  onChange,
   baseFilter,
   className,
   ...restProps
@@ -156,7 +157,7 @@ function PickSchema({
             <p>Измените параметры фильтра</p>
           </FlexColumn>
         }
-        onRowClicked={rowData => onSelectValue(rowData.id)}
+        onRowClicked={rowData => onChange(rowData.id)}
       />
     </div>
   );

rsconcept/frontend/src/components/select/PickSubstitutions.tsx

@@ -20,8 +20,9 @@ import { errors } from '@/utils/labels';
 import SelectLibraryItem from './SelectLibraryItem';
 
 interface PickSubstitutionsProps extends CProps.Styling {
-  substitutions: ICstSubstitute[];
+  value: ICstSubstitute[];
-  setSubstitutions: React.Dispatch<React.SetStateAction<ICstSubstitute[]>>;
+  onChange: React.Dispatch<React.SetStateAction<ICstSubstitute[]>>;
+
   suggestions?: ICstSubstitute[];
 
   prefixID: string;
@@ -35,8 +36,8 @@ interface PickSubstitutionsProps extends CProps.Styling {
 const columnHelper = createColumnHelper<IMultiSubstitution>();
 
 function PickSubstitutions({
-  substitutions,
+  value,
-  setSubstitutions,
+  onChange,
   suggestions,
   prefixID,
   rows,
@@ -66,7 +67,7 @@ function PickSubstitutions({
     ) ?? [];
 
   const substitutionData: IMultiSubstitution[] = [
-    ...substitutions.map(item => ({
+    ...value.map(item => ({
       original_source: getSchemaByCst(item.original)!,
       original: getConstituenta(item.original)!,
       substitution: getConstituenta(item.substitution)!,
@@ -110,8 +111,8 @@ function PickSubstitutions({
       original: deleteRight ? rightCst.id : leftCst.id,
       substitution: deleteRight ? leftCst.id : rightCst.id
     };
-    const toDelete = substitutions.map(item => item.original);
+    const toDelete = value.map(item => item.original);
-    const replacements = substitutions.map(item => item.substitution);
+    const replacements = value.map(item => item.substitution);
     if (
       toDelete.includes(newSubstitution.original) ||
       toDelete.includes(newSubstitution.substitution) ||
@@ -126,7 +127,7 @@ function PickSubstitutions({
         return;
       }
     }
-    setSubstitutions(prev => [...prev, newSubstitution]);
+    onChange(prev => [...prev, newSubstitution]);
     setLeftCst(undefined);
     setRightCst(undefined);
   }
@@ -136,12 +137,12 @@ function PickSubstitutions({
   }
 
   function handleAcceptSuggestion(item: IMultiSubstitution) {
-    setSubstitutions(prev => [...prev, { original: item.original.id, substitution: item.substitution.id }]);
+    onChange(prev => [...prev, { original: item.original.id, substitution: item.substitution.id }]);
   }
 
   function handleDeleteSubstitution(target: IMultiSubstitution) {
     handleDeclineSuggestion(target);
-    setSubstitutions(prev => {
+    onChange(prev => {
       const newItems: ICstSubstitute[] = [];
       prev.forEach(item => {
         if (item.original !== target.original.id || item.substitution !== target.substitution.id) {
@@ -230,15 +231,15 @@ function PickSubstitutions({
             placeholder='Выберите аргумент'
             items={allowSelfSubstitution ? schemas : schemas.filter(item => item.id !== rightArgument?.id)}
             value={leftArgument}
-            onSelectValue={setLeftArgument}
+            onChange={setLeftArgument}
           />
           <SelectConstituenta
             noBorder
             items={(leftArgument as IRSForm)?.items.filter(
-              cst => !substitutions.find(item => item.original === cst.id) && (!filter || filter(cst))
+              cst => !value.find(item => item.original === cst.id) && (!filter || filter(cst))
             )}
             value={leftCst}
-            onSelectValue={setLeftCst}
+            onChange={setLeftCst}
           />
         </div>
         <div className='flex flex-col gap-1'>
@@ -268,15 +269,15 @@ function PickSubstitutions({
             placeholder='Выберите аргумент'
             items={allowSelfSubstitution ? schemas : schemas.filter(item => item.id !== leftArgument?.id)}
             value={rightArgument}
-            onSelectValue={setRightArgument}
+            onChange={setRightArgument}
           />
           <SelectConstituenta
             noBorder
             items={(rightArgument as IRSForm)?.items.filter(
-              cst => !substitutions.find(item => item.original === cst.id) && (!filter || filter(cst))
+              cst => !value.find(item => item.original === cst.id) && (!filter || filter(cst))
             )}
             value={rightCst}
-            onSelectValue={setRightCst}
+            onChange={setRightCst}
           />
         </div>
       </div>

rsconcept/frontend/src/components/select/SelectAccessPolicy.tsx

@@ -1,7 +1,5 @@
 'use client';
 
-import { useCallback } from 'react';
-
 import { PolicyIcon } from '@/components/DomainIcons';
 import { CProps } from '@/components/props';
 import Dropdown from '@/components/ui/Dropdown';
@@ -15,6 +13,7 @@ import { describeAccessPolicy, labelAccessPolicy } from '@/utils/labels';
 interface SelectAccessPolicyProps extends CProps.Styling {
   value: AccessPolicy;
   onChange: (value: AccessPolicy) => void;
+
   disabled?: boolean;
   stretchLeft?: boolean;
 }
@@ -22,15 +21,12 @@ interface SelectAccessPolicyProps extends CProps.Styling {
 function SelectAccessPolicy({ value, disabled, stretchLeft, onChange, ...restProps }: SelectAccessPolicyProps) {
   const menu = useDropdown();
 
-  const handleChange = useCallback(
+  function handleChange(newValue: AccessPolicy) {
-    (newValue: AccessPolicy) => {
     menu.hide();
     if (newValue !== value) {
       onChange(newValue);
     }
-    },
+  }
-    [menu, value, onChange]
-  );
 
   return (
     <div ref={menu.ref} {...restProps}>

rsconcept/frontend/src/components/select/SelectConstituenta.tsx

@@ -10,10 +10,10 @@ import { matchConstituenta } from '@/models/rsformAPI';
 import { describeConstituenta, describeConstituentaTerm } from '@/utils/labels';
 
 interface SelectConstituentaProps extends CProps.Styling {
-  items?: IConstituenta[];
   value?: IConstituenta;
-  onSelectValue: (newValue?: IConstituenta) => void;
+  onChange: (newValue?: IConstituenta) => void;
 
+  items?: IConstituenta[];
   placeholder?: string;
   noBorder?: boolean;
 }
@@ -22,7 +22,7 @@ function SelectConstituenta({
   className,
   items,
   value,
-  onSelectValue,
+  onChange,
   placeholder = 'Выберите конституенту',
   ...restProps
 }: SelectConstituentaProps) {
@@ -42,7 +42,7 @@ function SelectConstituenta({
       className={clsx('text-ellipsis', className)}
       options={options}
       value={value ? { value: value.id, label: `${value.alias}: ${describeConstituentaTerm(value)}` } : null}
-      onChange={data => onSelectValue(items?.find(cst => cst.id === data?.value))}
+      onChange={data => onChange(items?.find(cst => cst.id === data?.value))}
       // @ts-expect-error: TODO: use type definitions from react-select in filter object
       filterOption={filter}
       placeholder={placeholder}

rsconcept/frontend/src/components/select/SelectGraphFilter.tsx

@@ -1,7 +1,5 @@
 'use client';
 
-import { useCallback } from 'react';
-
 import { DependencyIcon } from '@/components/DomainIcons';
 import { CProps } from '@/components/props';
 import Dropdown from '@/components/ui/Dropdown';
@@ -15,21 +13,18 @@ import { describeCstSource, labelCstSource } from '@/utils/labels';
 
 interface SelectGraphFilterProps extends CProps.Styling {
   value: DependencyMode;
-  dense?: boolean;
   onChange: (value: DependencyMode) => void;
+  dense?: boolean;
 }
 
 function SelectGraphFilter({ value, dense, onChange, ...restProps }: SelectGraphFilterProps) {
   const menu = useDropdown();
   const size = useWindowSize();
 
-  const handleChange = useCallback(
+  function handleChange(newValue: DependencyMode) {
-    (newValue: DependencyMode) => {
     menu.hide();
     onChange(newValue);
-    },
+  }
-    [menu, onChange]
-  );
 
   return (
     <div ref={menu.ref} {...restProps}>

rsconcept/frontend/src/components/select/SelectItemType.tsx

@@ -1,7 +1,5 @@
 'use client';
 
-import { useCallback } from 'react';
-
 import { ItemTypeIcon } from '@/components/DomainIcons';
 import { CProps } from '@/components/props';
 import Dropdown from '@/components/ui/Dropdown';
@@ -22,15 +20,12 @@ interface SelectItemTypeProps extends CProps.Styling {
 function SelectItemType({ value, disabled, stretchLeft, onChange, ...restProps }: SelectItemTypeProps) {
   const menu = useDropdown();
 
-  const handleChange = useCallback(
+  function handleChange(newValue: LibraryItemType) {
-    (newValue: LibraryItemType) => {
     menu.hide();
     if (newValue !== value) {
       onChange(newValue);
     }
-    },
+  }
-    [menu, value, onChange]
-  );
 
   return (
     <div ref={menu.ref} {...restProps}>

rsconcept/frontend/src/components/select/SelectLibraryItem.tsx

@@ -10,7 +10,7 @@ import { matchLibraryItem } from '@/models/libraryAPI';
 interface SelectLibraryItemProps extends CProps.Styling {
   items?: ILibraryItem[];
   value?: ILibraryItem;
-  onSelectValue: (newValue?: ILibraryItem) => void;
+  onChange: (newValue?: ILibraryItem) => void;
 
   placeholder?: string;
   noBorder?: boolean;
@@ -20,7 +20,7 @@ function SelectLibraryItem({
   className,
   items,
   value,
-  onSelectValue,
+  onChange,
   placeholder = 'Выберите схему',
   ...restProps
 }: SelectLibraryItemProps) {
@@ -40,7 +40,7 @@ function SelectLibraryItem({
       className={clsx('text-ellipsis', className)}
       options={options}
       value={value ? { value: value.id, label: `${value.alias}: ${value.title}` } : null}
-      onChange={data => onSelectValue(items?.find(cst => cst.id === data?.value))}
+      onChange={data => onChange(items?.find(cst => cst.id === data?.value))}
       // @ts-expect-error: TODO: use type definitions from react-select in filter object
       filterOption={filter}
       placeholder={placeholder}

rsconcept/frontend/src/components/select/SelectLocation.tsx

@@ -12,9 +12,10 @@ import { labelFolderNode } from '@/utils/labels';
 
 interface SelectLocationProps extends CProps.Styling {
   value: string;
+  onClick: (event: CProps.EventMouse, target: FolderNode) => void;
+
   prefix: string;
   dense?: boolean;
-  onClick: (event: CProps.EventMouse, target: FolderNode) => void;
 }
 
 function SelectLocation({ value, dense, prefix, onClick, className, style }: SelectLocationProps) {

rsconcept/frontend/src/components/select/SelectLocationContext.tsx

@@ -1,7 +1,6 @@
 'use client';
 
 import clsx from 'clsx';
-import { useCallback } from 'react';
 
 import { IconFolderTree } from '@/components/Icons';
 import { CProps } from '@/components/props';
@@ -14,10 +13,9 @@ import SelectLocation from './SelectLocation';
 
 interface SelectLocationContextProps extends CProps.Styling {
   value: string;
+  onChange: (newValue: string) => void;
   title?: string;
   stretchTop?: boolean;
-
-  onChange: (newValue: string) => void;
 }
 
 function SelectLocationContext({
@@ -29,15 +27,12 @@ function SelectLocationContext({
 }: SelectLocationContextProps) {
   const menu = useDropdown();
 
-  const handleClick = useCallback(
+  function handleClick(event: CProps.EventMouse, newValue: string) {
-    (event: CProps.EventMouse, newValue: string) => {
     event.preventDefault();
     event.stopPropagation();
     menu.hide();
     onChange(newValue);
-    },
+  }
-    [menu, onChange]
-  );
 
   return (
     <div ref={menu.ref} className='h-full text-right self-start mt-[-0.25rem] ml-[-1.5rem]'>

rsconcept/frontend/src/components/select/SelectLocationHead.tsx

@@ -1,7 +1,6 @@
 'use client';
 
 import clsx from 'clsx';
-import { useCallback } from 'react';
 
 import { LocationIcon } from '@/components/DomainIcons';
 import { CProps } from '@/components/props';
@@ -22,13 +21,10 @@ interface SelectLocationHeadProps extends CProps.Styling {
 function SelectLocationHead({ value, excluded = [], onChange, className, ...restProps }: SelectLocationHeadProps) {
   const menu = useDropdown();
 
-  const handleChange = useCallback(
+  function handleChange(newValue: LocationHead) {
-    (newValue: LocationHead) => {
     menu.hide();
     onChange(newValue);
-    },
+  }
-    [menu, onChange]
-  );
 
   return (
     <div ref={menu.ref} className={clsx('h-full text-right', className)} {...restProps}>

rsconcept/frontend/src/components/select/SelectMatchMode.tsx

@@ -1,7 +1,5 @@
 'use client';
 
-import { useCallback } from 'react';
-
 import { MatchModeIcon } from '@/components/DomainIcons';
 import { CProps } from '@/components/props';
 import Dropdown from '@/components/ui/Dropdown';
@@ -15,21 +13,18 @@ import { describeCstMatchMode, labelCstMatchMode } from '@/utils/labels';
 
 interface SelectMatchModeProps extends CProps.Styling {
   value: CstMatchMode;
-  dense?: boolean;
   onChange: (value: CstMatchMode) => void;
+  dense?: boolean;
 }
 
 function SelectMatchMode({ value, dense, onChange, ...restProps }: SelectMatchModeProps) {
   const menu = useDropdown();
   const size = useWindowSize();
 
-  const handleChange = useCallback(
+  function handleChange(newValue: CstMatchMode) {
-    (newValue: CstMatchMode) => {
     menu.hide();
     onChange(newValue);
-    },
+  }
-    [menu, onChange]
-  );
 
   return (
     <div ref={menu.ref} {...restProps}>

rsconcept/frontend/src/components/select/SelectMultiGrammeme.tsx

@@ -10,11 +10,11 @@ interface SelectMultiGrammemeProps
   extends Omit<SelectMultiProps<IGrammemeOption>, 'value' | 'onChange'>,
     CProps.Styling {
   value: IGrammemeOption[];
-  onChangeValue: (newValue: IGrammemeOption[]) => void;
+  onChange: (newValue: IGrammemeOption[]) => void;
   placeholder?: string;
 }
 
-function SelectMultiGrammeme({ value, onChangeValue, ...restProps }: SelectMultiGrammemeProps) {
+function SelectMultiGrammeme({ value, onChange, ...restProps }: SelectMultiGrammemeProps) {
   const [options, setOptions] = useState<IGrammemeOption[]>([]);
 
   useEffect(() => {
@@ -28,7 +28,7 @@ function SelectMultiGrammeme({ value, onChangeValue, ...restProps }: SelectMulti
     <SelectMulti
       options={options}
       value={value}
-      onChange={newValue => onChangeValue([...newValue].sort(compareGrammemeOptions))}
+      onChange={newValue => onChange([...newValue].sort(compareGrammemeOptions))}
       {...restProps}
     />
   );

rsconcept/frontend/src/components/select/SelectOperation.tsx

@@ -10,7 +10,7 @@ import { matchOperation } from '@/models/ossAPI';
 interface SelectOperationProps extends CProps.Styling {
   items?: IOperation[];
   value?: IOperation;
-  onSelectValue: (newValue?: IOperation) => void;
+  onChange: (newValue?: IOperation) => void;
 
   placeholder?: string;
   noBorder?: boolean;
@@ -20,7 +20,7 @@ function SelectOperation({
   className,
   items,
   value,
-  onSelectValue,
+  onChange,
   placeholder = 'Выберите операцию',
   ...restProps
 }: SelectOperationProps) {
@@ -40,7 +40,7 @@ function SelectOperation({
       className={clsx('text-ellipsis', className)}
       options={options}
       value={value ? { value: value.id, label: `${value.alias}: ${value.title}` } : null}
-      onChange={data => onSelectValue(items?.find(cst => cst.id === data?.value))}
+      onChange={data => onChange(items?.find(cst => cst.id === data?.value))}
       // @ts-expect-error: TODO: use type definitions from react-select in filter object
       filterOption={filter}
       placeholder={placeholder}

rsconcept/frontend/src/components/select/SelectUser.tsx

@@ -11,7 +11,7 @@ import { matchUser } from '@/models/userAPI';
 
 interface SelectUserProps extends CProps.Styling {
   value?: UserID;
-  onSelectValue: (newValue: UserID) => void;
+  onChange: (newValue: UserID) => void;
   filter?: (userID: UserID) => boolean;
 
   placeholder?: string;
@@ -22,7 +22,7 @@ function SelectUser({
   className,
   filter,
   value,
-  onSelectValue,
+  onChange,
   placeholder = 'Выберите пользователя',
   ...restProps
 }: SelectUserProps) {
@@ -46,7 +46,7 @@ function SelectUser({
       options={options}
       value={value ? { value: value, label: getUserLabel(value) } : null}
       onChange={data => {
-        if (data?.value !== undefined) onSelectValue(data.value);
+        if (data?.value !== undefined) onChange(data.value);
       }}
       // @ts-expect-error: TODO: use type definitions from react-select in filter object
       filterOption={filterLabel}

rsconcept/frontend/src/components/select/SelectVersion.tsx

@@ -11,13 +11,13 @@ interface SelectVersionProps extends CProps.Styling {
   id?: string;
   items?: IVersionInfo[];
   value?: VersionID;
-  onSelectValue: (newValue?: VersionID) => void;
+  onChange: (newValue?: VersionID) => void;
 
   placeholder?: string;
   noBorder?: boolean;
 }
 
-function SelectVersion({ id, className, items, value, onSelectValue, ...restProps }: SelectVersionProps) {
+function SelectVersion({ id, className, items, value, onChange, ...restProps }: SelectVersionProps) {
   const options = [
     {
       value: undefined,
@@ -40,7 +40,7 @@ function SelectVersion({ id, className, items, value, onSelectValue, ...restProp
       className={clsx('min-w-[12rem] text-ellipsis', className)}
       options={options}
       value={{ value: value, label: valueLabel }}
-      onChange={data => onSelectValue(data?.value)}
+      onChange={data => onChange(data?.value)}
       {...restProps}
     />
   );

rsconcept/frontend/src/components/select/SelectWordForm.tsx

@@ -1,7 +1,6 @@
 'use client';
 
 import clsx from 'clsx';
-import { useCallback } from 'react';
 
 import { CProps } from '@/components/props';
 import WordformButton from '@/dialogs/DlgEditReference/WordformButton';
@@ -10,17 +9,14 @@ import { prefixes } from '@/utils/constants';
 import { DefaultWordForms, IGrammemeOption, SelectorGrammemes } from '@/utils/selectors';
 
 interface SelectWordFormProps extends CProps.Styling {
-  selected: IGrammemeOption[];
+  value: IGrammemeOption[];
-  setSelected: React.Dispatch<React.SetStateAction<IGrammemeOption[]>>;
+  onChange: React.Dispatch<React.SetStateAction<IGrammemeOption[]>>;
 }
 
-function SelectWordForm({ selected, setSelected, className, ...restProps }: SelectWordFormProps) {
+function SelectWordForm({ value, onChange, className, ...restProps }: SelectWordFormProps) {
-  const handleSelect = useCallback(
+  function handleSelect(grams: Grammeme[]) {
-    (grams: Grammeme[]) => {
+    onChange(SelectorGrammemes.filter(({ value }) => grams.includes(value as Grammeme)));
-      setSelected(SelectorGrammemes.filter(({ value }) => grams.includes(value as Grammeme)));
+  }
-    },
-    [setSelected]
-  );
 
   return (
     <div className={clsx('text-xs sm:text-sm', className)} {...restProps}>
@@ -30,7 +26,7 @@ function SelectWordForm({ selected, setSelected, className, ...restProps }: Sele
           text={data.text}
           example={data.example}
           grams={data.grams}
-          isSelected={data.grams.every(gram => selected.find(item => (item.value as Grammeme) === gram))}
+          isSelected={data.grams.every(gram => value.find(item => (item.value as Grammeme) === gram))}
           onSelectGrams={handleSelect}
         />
       ))}

rsconcept/frontend/src/components/select/ToolbarGraphSelection.tsx

@@ -1,5 +1,4 @@
 import clsx from 'clsx';
-import { useCallback } from 'react';
 
 import {
   IconGraphCollapse,
@@ -17,81 +16,75 @@ import MiniButton from '@/components/ui/MiniButton';
 import { Graph } from '@/models/Graph';
 
 interface ToolbarGraphSelectionProps extends CProps.Styling {
+  value: number[];
+  onChange: (newSelection: number[]) => void;
   graph: Graph;
-  selected: number[];
   isCore: (item: number) => boolean;
   isOwned?: (item: number) => boolean;
-  setSelected: (newSelection: number[]) => void;
   emptySelection?: boolean;
 }
 
 function ToolbarGraphSelection({
   className,
   graph,
-  selected,
+  value: selected,
   isCore,
   isOwned,
-  setSelected,
+  onChange,
   emptySelection,
   ...restProps
 }: ToolbarGraphSelectionProps) {
-  const handleSelectCore = useCallback(() => {
+  function handleSelectCore() {
     const core = [...graph.nodes.keys()].filter(isCore);
-    setSelected([...core, ...graph.expandInputs(core)]);
+    onChange([...core, ...graph.expandInputs(core)]);
-  }, [setSelected, graph, isCore]);
+  }
 
-  const handleSelectOwned = useCallback(
+  function handleSelectOwned() {
-    () => (isOwned ? setSelected([...graph.nodes.keys()].filter(isOwned)) : undefined),
+    if (isOwned) onChange([...graph.nodes.keys()].filter(isOwned));
-    [setSelected, graph, isOwned]
+  }
-  );
-
-  const handleInvertSelection = useCallback(
-    () => setSelected([...graph.nodes.keys()].filter(item => !selected.includes(item))),
-    [setSelected, selected, graph]
-  );
 
   return (
     <div className={clsx('cc-icons', className)} {...restProps}>
       <MiniButton
         titleHtml='Сбросить выделение'
         icon={<IconReset size='1.25rem' className='icon-primary' />}
-        onClick={() => setSelected([])}
+        onClick={() => onChange([])}
         disabled={emptySelection}
       />
       <MiniButton
         titleHtml='Выделить все влияющие'
         icon={<IconGraphCollapse size='1.25rem' className='icon-primary' />}
-        onClick={() => setSelected([...selected, ...graph.expandAllInputs(selected)])}
+        onClick={() => onChange([...selected, ...graph.expandAllInputs(selected)])}
         disabled={emptySelection}
       />
       <MiniButton
         titleHtml='Выделить все зависимые'
         icon={<IconGraphExpand size='1.25rem' className='icon-primary' />}
-        onClick={() => setSelected([...selected, ...graph.expandAllOutputs(selected)])}
+        onClick={() => onChange([...selected, ...graph.expandAllOutputs(selected)])}
         disabled={emptySelection}
       />
       <MiniButton
         titleHtml='<b>Максимизация</b> <br/>дополнение выделения конституентами, <br/>зависимыми только от выделенных'
         icon={<IconGraphMaximize size='1.25rem' className='icon-primary' />}
-        onClick={() => setSelected(graph.maximizePart(selected))}
+        onClick={() => onChange(graph.maximizePart(selected))}
         disabled={emptySelection}
       />
       <MiniButton
         titleHtml='Выделить поставщиков'
         icon={<IconGraphInputs size='1.25rem' className='icon-primary' />}
-        onClick={() => setSelected([...selected, ...graph.expandInputs(selected)])}
+        onClick={() => onChange([...selected, ...graph.expandInputs(selected)])}
         disabled={emptySelection}
       />
       <MiniButton
         titleHtml='Выделить потребителей'
         icon={<IconGraphOutputs size='1.25rem' className='icon-primary' />}
-        onClick={() => setSelected([...selected, ...graph.expandOutputs(selected)])}
+        onClick={() => onChange([...selected, ...graph.expandOutputs(selected)])}
         disabled={emptySelection}
       />
       <MiniButton
         titleHtml='Инвертировать'
         icon={<IconGraphInverse size='1.25rem' className='icon-primary' />}
-        onClick={handleInvertSelection}
+        onClick={() => onChange([...graph.nodes.keys()].filter(item => !selected.includes(item)))}
       />
       <MiniButton
         titleHtml='Выделить ядро'

rsconcept/frontend/src/components/ui/Checkbox.tsx

@@ -4,7 +4,7 @@ import { CheckboxChecked } from '@/components/Icons';
 import { CProps } from '@/components/props';
 import { globals } from '@/utils/constants';
 
-export interface CheckboxProps extends Omit<CProps.Button, 'value' | 'onClick'> {
+export interface CheckboxProps extends Omit<CProps.Button, 'value' | 'onClick' | 'onChange'> {
   /** Label to display next to the checkbox. */
   label?: string;
 
@@ -12,10 +12,10 @@ export interface CheckboxProps extends Omit<CProps.Button, 'value' | 'onClick'>
   disabled?: boolean;
 
   /** Current value - `true` or `false`. */
-  value: boolean;
+  value?: boolean;
 
   /** Callback to set the `value`. */
-  setValue?: (newValue: boolean) => void;
+  onChange?: (newValue: boolean) => void;
 }
 
 /**
@@ -29,18 +29,18 @@ function Checkbox({
   hideTitle,
   className,
   value,
-  setValue,
+  onChange,
   ...restProps
 }: CheckboxProps) {
-  const cursor = disabled ? 'cursor-arrow' : setValue ? 'cursor-pointer' : '';
+  const cursor = disabled ? 'cursor-arrow' : onChange ? 'cursor-pointer' : '';
 
   function handleClick(event: CProps.EventMouse): void {
     event.preventDefault();
     event.stopPropagation();
-    if (disabled || !setValue) {
+    if (disabled || !onChange) {
       return;
     }
-    setValue(!value);
+    onChange(!value);
   }
 
   return (

rsconcept/frontend/src/components/ui/CheckboxTristate.tsx

@@ -6,12 +6,12 @@ import { globals } from '@/utils/constants';
 
 import { CheckboxProps } from './Checkbox';
 
-export interface CheckboxTristateProps extends Omit<CheckboxProps, 'value' | 'setValue'> {
+export interface CheckboxTristateProps extends Omit<CheckboxProps, 'value' | 'onChange'> {
   /** Current value - `null`, `true` or `false`. */
   value: boolean | null;
 
   /** Callback to set the `value`. */
-  setValue?: (newValue: boolean | null) => void;
+  onChange?: (newValue: boolean | null) => void;
 }
 
 /**
@@ -25,23 +25,23 @@ function CheckboxTristate({
   hideTitle,
   className,
   value,
-  setValue,
+  onChange,
   ...restProps
 }: CheckboxTristateProps) {
-  const cursor = disabled ? 'cursor-arrow' : setValue ? 'cursor-pointer' : '';
+  const cursor = disabled ? 'cursor-arrow' : onChange ? 'cursor-pointer' : '';
 
   function handleClick(event: CProps.EventMouse): void {
     event.preventDefault();
     event.stopPropagation();
-    if (disabled || !setValue) {
+    if (disabled || !onChange) {
       return;
     }
     if (value === false) {
-      setValue(null);
+      onChange(null);
     } else if (value === null) {
-      setValue(true);
+      onChange(true);
     } else {
-      setValue(false);
+      onChange(false);
     }
   }
 

rsconcept/frontend/src/components/ui/DataTable/SelectAll.tsx

@@ -22,7 +22,7 @@ function SelectAll<TData>({ table, resetLastSelected }: SelectAllProps<TData>) {
       value={
         !table.getIsAllPageRowsSelected() && table.getIsSomePageRowsSelected() ? null : table.getIsAllPageRowsSelected()
       }
-      setValue={handleChange}
+      onChange={handleChange}
     />
   );
 }

rsconcept/frontend/src/components/ui/DataTable/SelectRow.tsx

@@ -15,7 +15,7 @@ function SelectRow<TData>({ row, onChangeLastSelected }: SelectRowProps<TData>)
     row.toggleSelected(value);
   }
 
-  return <Checkbox tabIndex={-1} value={row.getIsSelected()} setValue={handleChange} />;
+  return <Checkbox tabIndex={-1} value={row.getIsSelected()} onChange={handleChange} />;
 }
 
 export default SelectRow;

rsconcept/frontend/src/components/ui/DropdownCheckbox.tsx

@@ -3,7 +3,7 @@ import clsx from 'clsx';
 import Checkbox, { CheckboxProps } from './Checkbox';
 
 /** Animated {@link Checkbox} inside a {@link Dropdown} item. */
-function DropdownCheckbox({ setValue, disabled, ...restProps }: CheckboxProps) {
+function DropdownCheckbox({ onChange: setValue, disabled, ...restProps }: CheckboxProps) {
   return (
     <div
       className={clsx(
@@ -13,7 +13,7 @@ function DropdownCheckbox({ setValue, disabled, ...restProps }: CheckboxProps) {
         !!setValue && !disabled && 'clr-hover'
       )}
     >
-      <Checkbox tabIndex={-1} disabled={disabled} setValue={setValue} {...restProps} />
+      <Checkbox tabIndex={-1} disabled={disabled} onChange={setValue} {...restProps} />
     </div>
   );
 }

rsconcept/frontend/src/components/ui/ErrorField.tsx

@@ -0,0 +1,24 @@
+import clsx from 'clsx';
+import { FieldError, GlobalError } from 'react-hook-form';
+
+import { CProps } from '../props';
+
+interface ErrorFieldProps extends CProps.Styling {
+  error?: FieldError | GlobalError;
+}
+
+/**
+ * Displays an error message for input field.
+ */
+function ErrorField({ error, className, ...restProps }: ErrorFieldProps): React.ReactElement | null {
+  if (!error) {
+    return null;
+  }
+  return (
+    <div className={clsx('text-sm text-warn-600 select-none', className)} {...restProps}>
+      {error.message}
+    </div>
+  );
+}
+
+export default ErrorField;

rsconcept/frontend/src/components/ui/SelectTree.tsx

@@ -19,7 +19,7 @@ interface SelectTreeProps<ItemType> extends CProps.Styling {
   prefix: string;
 
   /** Callback to be called when the value changes. */
-  onChangeValue: (newItem: ItemType) => void;
+  onChange: (newItem: ItemType) => void;
 
   /** Callback providing the parent of the item. */
   getParent: (item: ItemType) => ItemType;
@@ -40,7 +40,7 @@ function SelectTree<ItemType>({
   getParent,
   getLabel,
   getDescription,
-  onChangeValue,
+  onChange,
   prefix,
   ...restProps
 }: SelectTreeProps<ItemType>) {
@@ -75,7 +75,7 @@ function SelectTree<ItemType>({
   function handleSetValue(event: CProps.EventMouse, target: ItemType) {
     event.preventDefault();
     event.stopPropagation();
-    onChangeValue(target);
+    onChange(target);
   }
 
   return (

rsconcept/frontend/src/components/ui/TextArea.tsx

@@ -2,9 +2,10 @@ import clsx from 'clsx';
 
 import { CProps } from '@/components/props';
 
+import ErrorField from './ErrorField';
 import Label from './Label';
 
-export interface TextAreaProps extends CProps.Editor, CProps.Colors, CProps.TextArea {
+export interface TextAreaProps extends CProps.Editor, CProps.ErrorProcessing, CProps.Colors, CProps.TextArea {
   /** Indicates that padding should be minimal. */
   dense?: boolean;
 
@@ -29,6 +30,7 @@ function TextArea({
   noResize,
   className,
   fitContent,
+  error,
   colors = 'clr-input',
   ...restProps
 }: TextAreaProps) {
@@ -37,7 +39,7 @@ function TextArea({
       className={clsx(
         'w-full',
         {
-          'flex flex-col gap-2': !dense,
+          'flex flex-col': !dense,
           'flex flex-grow items-center gap-3': dense
         },
         dense && className
@@ -55,6 +57,7 @@ function TextArea({
             'resize-none': noResize,
             'border': !noBorder,
             'flex-grow max-w-full': dense,
+            'mt-2': !dense,
             'clr-outline': !noOutline
           },
           colors,
@@ -64,6 +67,7 @@ function TextArea({
         required={required}
         {...restProps}
       />
+      <ErrorField className='mt-1' error={error} />
     </div>
   );
 }

rsconcept/frontend/src/components/ui/TextInput.tsx

@@ -2,9 +2,10 @@ import clsx from 'clsx';
 
 import { CProps } from '@/components/props';
 
+import ErrorField from './ErrorField';
 import Label from './Label';
 
-interface TextInputProps extends CProps.Editor, CProps.Colors, CProps.Input {
+interface TextInputProps extends CProps.Editor, CProps.ErrorProcessing, CProps.Colors, CProps.Input {
   /** Indicates that padding should be minimal. */
   dense?: boolean;
 
@@ -32,13 +33,14 @@ function TextInput({
   className,
   colors = 'clr-input',
   onKeyDown,
+  error,
   ...restProps
 }: TextInputProps) {
   return (
     <div
       className={clsx(
         {
-          'flex flex-col gap-2': !dense,
+          'flex flex-col': !dense,
           'flex items-center gap-3': dense
         },
         dense && className
@@ -53,6 +55,7 @@ function TextInput({
           {
             'px-3': !noBorder || !disabled,
             'flex-grow max-w-full': dense,
+            'mt-2': !dense,
             'border': !noBorder,
             'clr-outline': !noOutline
           },
@@ -63,6 +66,7 @@ function TextInput({
         disabled={disabled}
         {...restProps}
       />
+      <ErrorField className='mt-1' error={error} />
     </div>
   );
 }

rsconcept/frontend/src/dialogs/DlgChangeInputSchema.tsx

@@ -61,7 +61,7 @@ function DlgChangeInputSchema() {
         items={sortedItems}
         itemType={LibraryItemType.RSFORM}
         value={selected} // prettier: split-line
-        onSelectValue={handleSelectLocation}
+        onChange={handleSelectLocation}
         rows={14}
         baseFilter={baseFilter}
       />

rsconcept/frontend/src/dialogs/DlgChangeLocation.tsx

@@ -48,7 +48,7 @@ function DlgChangeLocation() {
         <SelectLocationHead
           value={head} // prettier: split-lines
           onChange={setHead}
-          excluded={!user?.is_staff ? [LocationHead.LIBRARY] : []}
+          excluded={!user.is_staff ? [LocationHead.LIBRARY] : []}
         />
       </div>
       <SelectLocationContext value={location} onChange={handleSelectLocation} className='max-h-[9.2rem]' />

rsconcept/frontend/src/dialogs/DlgCloneLibraryItem.tsx

@@ -6,7 +6,7 @@ import { useState } from 'react';
 import { useConceptNavigation } from '@/app/Navigation/NavigationContext';
 import { urls } from '@/app/urls';
 import { useAuthSuspense } from '@/backend/auth/useAuth';
-import { IRSFormCloneDTO } from '@/backend/library/api';
+import { IRCloneLibraryItemDTO } from '@/backend/library/api';
 import { useCloneItem } from '@/backend/library/useCloneItem';
 import { VisibilityIcon } from '@/components/DomainIcons';
 import SelectAccessPolicy from '@/components/select/SelectAccessPolicy';
@@ -59,7 +59,7 @@ function DlgCloneLibraryItem() {
   }
 
   function handleSubmit() {
-    const data: IRSFormCloneDTO = {
+    const data: IRCloneLibraryItemDTO = {
       id: base.id,
       item_type: base.item_type,
       title: title,
@@ -119,11 +119,7 @@ function DlgCloneLibraryItem() {
       <div className='flex justify-between gap-3'>
         <div className='flex flex-col gap-2 w-[7rem] h-min'>
           <Label text='Корень' />
-          <SelectLocationHead
+          <SelectLocationHead value={head} onChange={setHead} excluded={!user.is_staff ? [LocationHead.LIBRARY] : []} />
-            value={head}
-            onChange={setHead}
-            excluded={!user?.is_staff ? [LocationHead.LIBRARY] : []}
-          />
         </div>
         <SelectLocationContext value={location} onChange={handleSelectLocation} />
         <TextArea
@@ -141,7 +137,7 @@ function DlgCloneLibraryItem() {
         id='dlg_only_selected'
         label={`Только выбранные конституенты [${selected.length} из ${totalCount}]`}
         value={onlySelected}
-        setValue={value => setOnlySelected(value)}
+        onChange={value => setOnlySelected(value)}
       />
     </Modal>
   );

rsconcept/frontend/src/dialogs/DlgCreateOperation/TabInputOperation.tsx

@@ -98,7 +98,7 @@ function TabInputOperation({
         </div>
         <Checkbox
           value={createSchema}
-          setValue={onChangeCreateSchema}
+          onChange={onChangeCreateSchema}
           label='Создать новую схему'
           titleHtml='Создать пустую схему для загрузки'
         />
@@ -108,7 +108,7 @@ function TabInputOperation({
           items={sortedItems}
           value={attachedID}
           itemType={LibraryItemType.RSFORM}
-          onSelectValue={onChangeAttachedID}
+          onChange={onChangeAttachedID}
           rows={8}
           baseFilter={baseFilter}
         />

rsconcept/frontend/src/dialogs/DlgCreateOperation/TabSynthesisOperation.tsx

@@ -57,7 +57,7 @@ function TabSynthesisOperation({
 
       <FlexColumn>
         <Label text={`Выбор аргументов: [ ${inputs.length} ]`} />
-        <PickMultiOperation items={oss.items} selected={inputs} setSelected={setInputs} rows={6} />
+        <PickMultiOperation items={oss.items} value={inputs} onChange={setInputs} rows={6} />
       </FlexColumn>
     </div>
   );

rsconcept/frontend/src/dialogs/DlgCreateVersion.tsx

@@ -64,7 +64,7 @@ function DlgCreateVersion() {
         id='dlg_only_selected'
         label={`Только выбранные конституенты [${selected.length} из ${totalCount}]`}
         value={onlySelected}
-        setValue={value => setOnlySelected(value)}
+        onChange={value => setOnlySelected(value)}
       />
     </Modal>
   );

rsconcept/frontend/src/dialogs/DlgCstTemplate/TabArguments.tsx

@@ -190,7 +190,7 @@ function TabArguments({ state, schema, partialUpdate }: TabArgumentsProps) {
         id='dlg_argument_picker'
         value={selectedCst}
         data={schema.items}
-        onSelectValue={handleSelectConstituenta}
+        onChange={handleSelectConstituenta}
         prefixID={prefixes.cst_modal_list}
         rows={7}
       />

rsconcept/frontend/src/dialogs/DlgCstTemplate/TabTemplate.tsx

@@ -102,7 +102,7 @@ function TabTemplate({ state, partialUpdate, templateSchema }: TabTemplateProps)
         id='dlg_template_picker'
         value={state.prototype}
         data={filteredData}
-        onSelectValue={cst => partialUpdate({ prototype: cst })}
+        onChange={cst => partialUpdate({ prototype: cst })}
         prefixID={prefixes.cst_template_ist}
         className='rounded-t-none'
         rows={8}

rsconcept/frontend/src/dialogs/DlgDeleteCst/DlgDeleteCst.tsx

@@ -55,7 +55,7 @@ function DlgDeleteCst() {
         label='Удалить зависимые конституенты'
         className='mb-2'
         value={expandOut}
-        setValue={value => setExpandOut(value)}
+        onChange={value => setExpandOut(value)}
       />
       {hasInherited ? (
         <p className='text-sm clr-text-red'>Внимание! Выбранные конституенты имеют наследников в ОСС</p>

rsconcept/frontend/src/dialogs/DlgDeleteOperation.tsx

@@ -39,7 +39,7 @@ function DlgDeleteOperation() {
         label='Сохранить наследованные конституенты'
         titleHtml='Наследованные конституенты <br/>превратятся в дописанные'
         value={keepConstituents}
-        setValue={setKeepConstituents}
+        onChange={setKeepConstituents}
         disabled={target.result === null}
       />
       <Checkbox
@@ -50,7 +50,7 @@ function DlgDeleteOperation() {
             : 'Удалить схему вместе с операцией'
         }
         value={deleteSchema}
-        setValue={setDeleteSchema}
+        onChange={setDeleteSchema}
         disabled={!target.is_owned || target.result === null}
       />
     </Modal>

rsconcept/frontend/src/dialogs/DlgEditEditors/DlgEditEditors.tsx

@@ -63,7 +63,7 @@ function DlgEditEditors() {
         <SelectUser
           filter={id => !selected.includes(id)}
           value={undefined}
-          onSelectValue={onAddEditor}
+          onChange={onAddEditor}
           className='w-[25rem]'
         />
       </div>

rsconcept/frontend/src/dialogs/DlgEditOperation/TabArguments.tsx

@@ -19,7 +19,7 @@ function TabArguments({ oss, inputs, target, setInputs }: TabArgumentsProps) {
     <div className='cc-fade-in cc-column'>
       <FlexColumn>
         <Label text={`Выбор аргументов: [ ${inputs.length} ]`} />
-        <PickMultiOperation items={filtered} selected={inputs} setSelected={setInputs} rows={8} />
+        <PickMultiOperation items={filtered} value={inputs} onChange={setInputs} rows={8} />
       </FlexColumn>
     </div>
   );

rsconcept/frontend/src/dialogs/DlgEditOperation/TabSynthesis.tsx

@@ -29,8 +29,8 @@ function TabSynthesis({
         schemas={schemas}
         prefixID={prefixes.dlg_cst_substitutes_list}
         rows={8}
-        substitutions={substitutions}
+        value={substitutions}
-        setSubstitutions={setSubstitutions}
+        onChange={setSubstitutions}
         suggestions={suggestions}
       />
       <TextArea

rsconcept/frontend/src/dialogs/DlgEditReference/TabEntityReference.tsx

@@ -64,7 +64,7 @@ function TabEntityReference({ initial, schema, onChangeValid, onChangeReference
         initialFilter={initial.text}
         value={selectedCst}
         data={schema.items}
-        onSelectValue={handleSelectConstituenta}
+        onChange={handleSelectConstituenta}
         prefixID={prefixes.cst_modal_list}
         describeFunc={cst => cst.term_resolved}
         matchFunc={(cst, filter) => matchConstituenta(cst, filter, CstMatchMode.TERM)}
@@ -94,7 +94,7 @@ function TabEntityReference({ initial, schema, onChangeValid, onChangeReference
         />
       </div>
 
-      <SelectWordForm selected={selectedGrams} setSelected={setSelectedGrams} />
+      <SelectWordForm value={selectedGrams} onChange={setSelectedGrams} />
 
       <div className='flex items-center gap-4'>
         <Label text='Словоформа' />
@@ -104,7 +104,7 @@ function TabEntityReference({ initial, schema, onChangeValid, onChangeReference
           className='flex-grow'
           menuPlacement='top'
           value={selectedGrams}
-          onChangeValue={setSelectedGrams}
+          onChange={setSelectedGrams}
         />
       </div>
     </div>

rsconcept/frontend/src/dialogs/DlgEditWordForms/DlgEditWordForms.tsx

@@ -13,7 +13,7 @@ import Label from '@/components/ui/Label';
 import MiniButton from '@/components/ui/MiniButton';
 import Modal from '@/components/ui/Modal';
 import TextArea from '@/components/ui/TextArea';
-import { Grammeme, IWordForm, IWordFormPlain } from '@/models/language';
+import { Grammeme, IWordForm } from '@/models/language';
 import { parseGrammemes, wordFormEquals } from '@/models/languageAPI';
 import { HelpTopic } from '@/models/miscellaneous';
 import { IConstituenta, TermForm } from '@/models/rsform';
@@ -79,11 +79,13 @@ function DlgEditWordForms() {
   }
 
   function handleInflect() {
-    const data: IWordFormPlain = {
+    inflectText(
+      {
         text: term,
         grams: inputGrams.map(gram => gram.value).join(',')
-    };
+      },
-    inflectText(data, response => setInputText(response.result));
+      response => setInputText(response.result)
+    );
   }
 
   function handleParse() {
@@ -170,7 +172,7 @@ function DlgEditWordForms() {
           placeholder='Выберите граммемы'
           className='min-w-[15rem] h-fit'
           value={inputGrams}
-          onChangeValue={setInputGrams}
+          onChange={setInputGrams}
         />
       </div>
 

rsconcept/frontend/src/dialogs/DlgGraphParams.tsx

@@ -31,31 +31,31 @@ function DlgGraphParams() {
           label='Скрыть текст'
           title='Не отображать термины'
           value={params.noText}
-          setValue={value => updateParams({ noText: value })}
+          onChange={value => updateParams({ noText: value })}
         />
         <Checkbox
           label='Скрыть несвязанные'
           title='Неиспользуемые конституенты'
           value={params.noHermits}
-          setValue={value => updateParams({ noHermits: value })}
+          onChange={value => updateParams({ noHermits: value })}
         />
         <Checkbox
           label='Скрыть шаблоны'
           titleHtml='Терм-функции и предикат-функции <br/>с параметризованными аргументами'
           value={params.noTemplates}
-          setValue={value => updateParams({ noTemplates: value })}
+          onChange={value => updateParams({ noTemplates: value })}
         />
         <Checkbox
           label='Транзитивная редукция'
           titleHtml='Удалить связи, образующие <br/>транзитивные пути в графе'
           value={params.noTransitive}
-          setValue={value => updateParams({ noTransitive: value })}
+          onChange={value => updateParams({ noTransitive: value })}
         />
         <Checkbox
           label='Свернуть порожденные'
           title='Не отображать порожденные понятия'
           value={params.foldDerived}
-          setValue={value => updateParams({ foldDerived: value })}
+          onChange={value => updateParams({ foldDerived: value })}
         />
       </div>
       <div className='flex flex-col gap-1'>
@@ -63,42 +63,42 @@ function DlgGraphParams() {
         <Checkbox
           label={labelCstType(CstType.BASE)}
           value={params.allowBase}
-          setValue={value => updateParams({ allowBase: value })}
+          onChange={value => updateParams({ allowBase: value })}
         />
         <Checkbox
           label={labelCstType(CstType.STRUCTURED)}
           value={params.allowStruct}
-          setValue={value => updateParams({ allowStruct: value })}
+          onChange={value => updateParams({ allowStruct: value })}
         />
         <Checkbox
           label={labelCstType(CstType.TERM)}
           value={params.allowTerm}
-          setValue={value => updateParams({ allowTerm: value })}
+          onChange={value => updateParams({ allowTerm: value })}
         />
         <Checkbox
           label={labelCstType(CstType.AXIOM)}
           value={params.allowAxiom}
-          setValue={value => updateParams({ allowAxiom: value })}
+          onChange={value => updateParams({ allowAxiom: value })}
         />
         <Checkbox
           label={labelCstType(CstType.FUNCTION)}
           value={params.allowFunction}
-          setValue={value => updateParams({ allowFunction: value })}
+          onChange={value => updateParams({ allowFunction: value })}
         />
         <Checkbox
           label={labelCstType(CstType.PREDICATE)}
           value={params.allowPredicate}
-          setValue={value => updateParams({ allowPredicate: value })}
+          onChange={value => updateParams({ allowPredicate: value })}
         />
         <Checkbox
           label={labelCstType(CstType.CONSTANT)}
           value={params.allowConstant}
-          setValue={value => updateParams({ allowConstant: value })}
+          onChange={value => updateParams({ allowConstant: value })}
         />
         <Checkbox
           label={labelCstType(CstType.THEOREM)}
           value={params.allowTheorem}
-          setValue={value => updateParams({ allowTheorem: value })}
+          onChange={value => updateParams({ allowTheorem: value })}
         />
       </div>
     </Modal>

rsconcept/frontend/src/dialogs/DlgInlineSynthesis/TabConstituents.tsx

@@ -21,8 +21,8 @@ function TabConstituents({ itemID, selected, setSelected }: TabConstituentsProps
       data={schema.items}
       rows={13}
       prefixID={prefixes.cst_inline_synth_list}
-      selected={selected}
+      value={selected}
-      setSelected={setSelected}
+      onChange={setSelected}
     />
   );
 }

rsconcept/frontend/src/dialogs/DlgInlineSynthesis/TabSource.tsx

@@ -25,7 +25,7 @@ function TabSource({ selected, receiver, setSelected }: TabSourceProps) {
         itemType={LibraryItemType.RSFORM}
         rows={14}
         value={selected}
-        onSelectValue={setSelected}
+        onChange={setSelected}
       />
       <div className='flex items-center gap-6 '>
         <span className='select-none'>Выбрана</span>

rsconcept/frontend/src/dialogs/DlgInlineSynthesis/TabSubstitutions.tsx

@@ -22,8 +22,8 @@ function TabSubstitutions({ sourceID, receiver, selected, substitutions, setSubs
 
   return (
     <PickSubstitutions
-      substitutions={substitutions}
+      value={substitutions}
-      setSubstitutions={setSubstitutions}
+      onChange={setSubstitutions}
       rows={10}
       prefixID={prefixes.cst_inline_synth_substitutes}
       schemas={schemas}

rsconcept/frontend/src/dialogs/DlgRelocateConstituents.tsx

@@ -103,7 +103,7 @@ function DlgRelocateConstituents() {
             placeholder='Выберите исходную схему'
             items={sourceSchemas}
             value={source}
-            onSelectValue={handleSelectSource}
+            onChange={handleSelectSource}
           />
           <MiniButton
             title='Направление перемещения'
@@ -116,7 +116,7 @@ function DlgRelocateConstituents() {
             placeholder='Выберите целевую схему'
             items={destinationSchemas}
             value={destination}
-            onSelectValue={handleSelectDestination}
+            onChange={handleSelectDestination}
           />
         </div>
         {sourceData.isLoading ? <Loader /> : null}
@@ -127,8 +127,8 @@ function DlgRelocateConstituents() {
             data={filteredConstituents}
             rows={12}
             prefixID={prefixes.dlg_cst_constituents_list}
-            selected={selected}
+            value={selected}
-            setSelected={setSelected}
+            onChange={setSelected}
           />
         ) : null}
       </div>

rsconcept/frontend/src/dialogs/DlgSubstituteCst.tsx

@@ -40,8 +40,8 @@ function DlgSubstituteCst() {
     >
       <PickSubstitutions
         allowSelfSubstitution
-        substitutions={substitutions}
+        value={substitutions}
-        setSubstitutions={setSubstitutions}
+        onChange={setSubstitutions}
         rows={6}
         prefixID={prefixes.dlg_cst_substitutes_list}
         schemas={[schema]}

rsconcept/frontend/src/dialogs/DlgUploadRSForm.tsx

@@ -53,7 +53,7 @@ function DlgUploadRSForm() {
         label='Загружать название и комментарий'
         className='py-2'
         value={loadMetadata}
-        setValue={value => setLoadMetadata(value)}
+        onChange={value => setLoadMetadata(value)}
       />
     </Modal>
   );

rsconcept/frontend/src/models/language.ts

@@ -214,21 +214,6 @@ export interface IWordForm {
   grams: GramData[];
 }
 
-/**
- * Represents wordform data used for backend communication.
- */
-export interface IWordFormPlain {
-  text: string;
-  grams: string;
-}
-
-/**
- * Represents lexeme response containing multiple {@link Wordform}s.
- */
-export interface ILexemeData {
-  items: IWordFormPlain[];
-}
-
 // ====== Reference resolution =====
 
 /**
@@ -270,11 +255,3 @@ export interface IReference {
   type: ReferenceType;
   data: IEntityReference | ISyntacticReference;
 }
-
-/**
- * Represents single resolved reference data.
- */
-export interface IResolvedReference extends IReference {
-  pos_input: ITextPosition;
-  pos_output: ITextPosition;
-}

rsconcept/frontend/src/models/oss.ts

@@ -42,11 +42,6 @@ export interface IOperation {
   arguments: OperationID[];
 }
 
-/**
- * Represents {@link IOperation} data from server.
- */
-export interface IOperationData extends Omit<IOperation, 'substitutions' | 'arguments'> {}
-
 /**
  * Represents {@link IOperation} position.
  */
@@ -115,20 +110,14 @@ export interface IOperationSchemaStats {
   count_owned: number;
 }
 
-/**
- * Represents backend data for {@link IOperationSchema}.
- */
-export interface IOperationSchemaData extends ILibraryItemData {
-  items: IOperationData[];
-  arguments: IArgument[];
-  substitutions: ICstSubstituteEx[];
-}
-
 /**
  * Represents OperationSchema.
  */
-export interface IOperationSchema extends IOperationSchemaData {
+export interface IOperationSchema extends ILibraryItemData {
   items: IOperation[];
+  arguments: IArgument[];
+  substitutions: ICstSubstituteEx[];
+
   graph: Graph;
   schemas: LibraryItemID[];
   stats: IOperationSchemaStats;

rsconcept/frontend/src/models/ossAPI.ts

@@ -2,6 +2,7 @@
  * Module: API for OperationSystem.
  */
 
+import { ConstituentaID, CstClass, CstType, IConstituenta, IRSForm } from '@/models/rsform';
 import { limits } from '@/utils/constants';
 import { describeSubstitutionError, information } from '@/utils/labels';
 import { TextMatcher } from '@/utils/utils';
@@ -9,7 +10,6 @@ import { TextMatcher } from '@/utils/utils';
 import { Graph } from './Graph';
 import { ILibraryItem, LibraryItemID } from './library';
 import { ICstSubstitute, IOperation, IOperationSchema, OperationID, SubstitutionErrorType } from './oss';
-import { ConstituentaID, CstClass, CstType, IConstituenta, IRSForm } from './rsform';
 import { AliasMapping, ParsingStatus } from './rslang';
 import { applyAliasMapping, applyTypificationMapping, extractGlobals, isSetTypification } from './rslangAPI';
 
@@ -49,7 +49,6 @@ export function sortItemsForOSS(oss: IOperationSchema, items: ILibraryItem[]): I
 
 type CrossMapping = Map<LibraryItemID, AliasMapping>;
 
-// TODO: test validator
 /**
  * Validator for Substitution table.
  */
@@ -459,7 +458,6 @@ export function getRelocateCandidates(
       const original = oss.substitutions.find(sub => sub.substitution === parent)?.original;
       if (original) {
         continue;
-        // TODO: test if original schema is destination schema
       }
     }
     unreachableBases.push(cst.id);

rsconcept/frontend/src/models/rsform.ts

@@ -83,9 +83,9 @@ export interface ITargetCst {
 }
 
 /**
- * Represents {@link IConstituenta} data from server.
+ * Represents Constituenta.
  */
-export interface IConstituentaData extends IConstituentaMeta {
+export interface IConstituenta extends IConstituentaMeta {
   parse: {
     status: ParsingStatus;
     valueClass: ValueClass;
@@ -93,12 +93,7 @@ export interface IConstituentaData extends IConstituentaMeta {
     syntaxTree: string;
     args: IArgumentInfo[];
   };
-}
 
-/**
- * Represents Constituenta.
- */
-export interface IConstituenta extends IConstituentaData {
   /** {@link LibraryItemID} of this {@link IConstituenta}. */
   schema: LibraryItemID;
 
@@ -172,27 +167,21 @@ export interface IRSFormStats {
 /**
  * Represents inheritance data for {@link IRSForm}.
  */
-export interface IInheritanceData {
+export interface IInheritanceInfo {
   child: ConstituentaID;
   child_source: LibraryItemID;
   parent: ConstituentaID;
   parent_source: LibraryItemID;
 }
 
-/**
- * Represents data for {@link IRSForm} provided by backend.
- */
-export interface IRSFormData extends ILibraryItemVersioned {
-  items: IConstituentaData[];
-  inheritance: IInheritanceData[];
-  oss: ILibraryItemReference[];
-}
-
 /**
  * Represents formal explication for set of concepts.
  */
-export interface IRSForm extends IRSFormData {
+export interface IRSForm extends ILibraryItemVersioned {
   items: IConstituenta[];
+  inheritance: IInheritanceInfo[];
+  oss: ILibraryItemReference[];
+
   stats: IRSFormStats;
   graph: Graph;
   cstByAlias: Map<string, IConstituenta>;

rsconcept/frontend/src/models/user.ts

@@ -32,14 +32,6 @@ export interface ICurrentUser {
   editor: LibraryItemID[];
 }
 
-/**
- * Represents signup data, used to create new users.
- */
-export interface IUserSignupData extends Omit<IUser, 'is_staff' | 'id'> {
-  password: string;
-  password2: string;
-}
-
 /**
  * Represents user profile for viewing and editing {@link IUser}.
  */

rsconcept/frontend/src/pages/CreateItemPage/FormCreateItem.tsx

@@ -1,12 +1,14 @@
 'use client';
 
+import { zodResolver } from '@hookform/resolvers/zod';
 import clsx from 'clsx';
-import { useCallback, useEffect, useRef, useState } from 'react';
+import { useRef } from 'react';
+import { Controller, useForm, useWatch } from 'react-hook-form';
 
 import { useConceptNavigation } from '@/app/Navigation/NavigationContext';
 import { urls } from '@/app/urls';
 import { useAuthSuspense } from '@/backend/auth/useAuth';
-import { ILibraryCreateDTO } from '@/backend/library/api';
+import { CreateLibraryItemSchema, ICreateLibraryItemDTO } from '@/backend/library/api';
 import { useCreateItem } from '@/backend/library/useCreateItem';
 import { VisibilityIcon } from '@/components/DomainIcons';
 import { IconDownload } from '@/components/Icons';
@@ -23,38 +25,43 @@ import SubmitButton from '@/components/ui/SubmitButton';
 import TextArea from '@/components/ui/TextArea';
 import TextInput from '@/components/ui/TextInput';
 import { AccessPolicy, LibraryItemType, LocationHead } from '@/models/library';
-import { combineLocation, validateLocation } from '@/models/libraryAPI';
+import { combineLocation } from '@/models/libraryAPI';
 import { useLibrarySearchStore } from '@/stores/librarySearch';
 import { EXTEOR_TRS_FILE } from '@/utils/constants';
 
 function FormCreateItem() {
   const router = useConceptNavigation();
   const { user } = useAuthSuspense();
-  const { createItem, isPending, error, reset } = useCreateItem();
+  const { createItem, isPending, error: serverError, reset: clearServerError } = useCreateItem();
 
   const searchLocation = useLibrarySearchStore(state => state.location);
   const setSearchLocation = useLibrarySearchStore(state => state.setLocation);
 
-  const [itemType, setItemType] = useState(LibraryItemType.RSFORM);
+  const {
-  const [title, setTitle] = useState('');
+    register,
-  const [alias, setAlias] = useState('');
+    handleSubmit,
-  const [comment, setComment] = useState('');
+    clearErrors,
-  const [visible, setVisible] = useState(true);
+    setValue,
-  const [policy, setPolicy] = useState(AccessPolicy.PUBLIC);
+    control,
-
+    formState: { errors }
-  const [head, setHead] = useState(LocationHead.USER);
+  } = useForm<ICreateLibraryItemDTO>({
-  const [body, setBody] = useState('');
+    resolver: zodResolver(CreateLibraryItemSchema),
-
+    defaultValues: {
-  const location = combineLocation(head, body);
+      item_type: LibraryItemType.RSFORM,
-  const isValid = validateLocation(location);
+      access_policy: AccessPolicy.PUBLIC,
-
+      visible: true,
-  const [fileName, setFileName] = useState('');
+      read_only: false,
-  const [file, setFile] = useState<File | undefined>();
+      location: !!searchLocation ? searchLocation : LocationHead.USER
+    }
+  });
+  const itemType = useWatch({ control, name: 'item_type' });
+  const file = useWatch({ control, name: 'file' });
   const inputRef = useRef<HTMLInputElement | null>(null);
 
-  useEffect(() => {
+  function resetErrors() {
-    reset();
+    clearServerError();
-  }, [title, alias, reset]);
+    clearErrors();
+  }
 
   function handleCancel() {
     if (router.canBack()) {
@@ -64,26 +71,28 @@ function FormCreateItem() {
     }
   }
 
-  function handleSubmit(event: React.FormEvent<HTMLFormElement>) {
+  function handleFileChange(event: React.ChangeEvent<HTMLInputElement>) {
-    event.preventDefault();
+    if (event.target.files && event.target.files.length > 0) {
-    if (isPending) {
+      setValue('file', event.target.files[0]);
-      return;
+      setValue('fileName', event.target.files[0].name);
+    } else {
+      setValue('file', undefined);
+      setValue('fileName', '');
     }
-    const data: ILibraryCreateDTO = {
+  }
-      item_type: itemType,
+
-      title: title,
+  function handleItemTypeChange(value: LibraryItemType) {
-      alias: alias,
+    if (value !== LibraryItemType.RSFORM) {
-      comment: comment,
+      setValue('file', undefined);
-      read_only: false,
+      setValue('fileName', '');
-      visible: visible,
+    }
-      access_policy: policy,
+    setValue('item_type', value);
-      location: location,
+  }
-      file: file,
+
-      fileName: file?.name
+  function onSubmit(data: ICreateLibraryItemDTO) {
-    };
-    setSearchLocation(location);
     createItem(data, newItem => {
-      if (itemType == LibraryItemType.RSFORM) {
+      setSearchLocation(data.location);
+      if (newItem.item_type == LibraryItemType.RSFORM) {
         router.push(urls.schema(newItem.id));
       } else {
         router.push(urls.oss(newItem.id));
@@ -91,43 +100,19 @@ function FormCreateItem() {
     });
   }
 
-  function handleFileChange(event: React.ChangeEvent<HTMLInputElement>) {
-    if (event.target.files && event.target.files.length > 0) {
-      setFileName(event.target.files[0].name);
-      setFile(event.target.files[0]);
-    } else {
-      setFileName('');
-      setFile(undefined);
-    }
-  }
-
-  const handleSelectLocation = useCallback((newValue: string) => {
-    setHead(newValue.substring(0, 2) as LocationHead);
-    setBody(newValue.length > 3 ? newValue.substring(3) : '');
-  }, []);
-
-  useEffect(() => {
-    if (!searchLocation) {
-      return;
-    }
-    handleSelectLocation(searchLocation);
-  }, [searchLocation, handleSelectLocation]);
-
-  useEffect(() => {
-    if (itemType !== LibraryItemType.RSFORM) {
-      setFile(undefined);
-      setFileName('');
-    }
-  }, [itemType]);
-
   return (
     <form
       className={clsx('cc-fade-in cc-column', 'min-w-[30rem] max-w-[30rem] mx-auto', 'px-6 py-3')}
-      onSubmit={handleSubmit}
+      onSubmit={event => void handleSubmit(onSubmit)(event)}
+      onChange={resetErrors}
     >
       <h1 className='select-none'>
         {itemType == LibraryItemType.RSFORM ? (
           <Overlay position='top-0 right-[0.5rem]'>
+            <Controller
+              control={control}
+              name='file'
+              render={() => (
                 <input
                   id='schema_file'
                   ref={inputRef}
@@ -136,6 +121,8 @@ function FormCreateItem() {
                   accept={EXTEOR_TRS_FILE}
                   onChange={handleFileChange}
                 />
+              )}
+            />
             <MiniButton
               title='Загрузить из Экстеор'
               icon={<IconDownload size='1.25rem' className='icon-primary' />}
@@ -146,40 +133,62 @@ function FormCreateItem() {
         Создание схемы
       </h1>
 
-      {fileName ? <Label className='text-wrap' text={`Загружен файл: ${fileName}`} /> : null}
+      {file ? <Label className='text-wrap' text={`Загружен файл: ${file.name}`} /> : null}
 
       <TextInput
         id='schema_title'
-        required={!file}
+        {...register('title')}
         label='Полное название'
         placeholder={file && 'Загрузить из файла'}
-        value={title}
+        error={errors.title}
-        onChange={event => setTitle(event.target.value)}
       />
 
       <div className='flex justify-between gap-3'>
         <TextInput
           id='schema_alias'
-          required={!file}
+          {...register('alias')}
           label='Сокращение'
           placeholder={file && 'Загрузить из файла'}
           className='w-[16rem]'
-          value={alias}
+          error={errors.alias}
-          onChange={event => setAlias(event.target.value)}
         />
         <div className='flex flex-col items-center gap-2'>
           <Label text='Тип схемы' className='self-center select-none' />
-          <SelectItemType value={itemType} onChange={setItemType} />
+          <Controller
+            control={control}
+            name='item_type'
+            render={({ field }) => (
+              <SelectItemType
+                value={field.value} //
+                onChange={handleItemTypeChange}
+              />
+            )}
+          />
         </div>
 
         <div className='flex flex-col gap-2'>
           <Label text='Доступ' className='self-center select-none' />
           <div className='ml-auto cc-icons'>
-            <SelectAccessPolicy value={policy} onChange={setPolicy} />
+            <Controller
+              control={control} //
+              name='access_policy'
+              render={({ field }) => (
+                <SelectAccessPolicy
+                  value={field.value} //
+                  onChange={field.onChange}
+                />
+              )}
+            />
+            <Controller
+              control={control}
+              name='visible'
+              render={({ field }) => (
                 <MiniButton
-              title={visible ? 'Библиотека: отображать' : 'Библиотека: скрывать'}
+                  title={field.value ? 'Библиотека: отображать' : 'Библиотека: скрывать'}
-              icon={<VisibilityIcon value={visible} />}
+                  icon={<VisibilityIcon value={field.value} />}
-              onClick={() => setVisible(prev => !prev)}
+                  onClick={() => field.onChange(!field.value)}
+                />
+              )}
             />
           </div>
         </div>
@@ -187,36 +196,58 @@ function FormCreateItem() {
 
       <TextArea
         id='schema_comment'
+        {...register('comment')}
         label='Описание'
         placeholder={file && 'Загрузить из файла'}
-        value={comment}
+        error={errors.comment}
-        onChange={event => setComment(event.target.value)}
       />
 
       <div className='flex justify-between gap-3 flex-grow'>
         <div className='flex flex-col gap-2 min-w-[7rem] h-min'>
           <Label text='Корень' />
+          <Controller
+            control={control} //
+            name='location'
+            render={({ field }) => (
               <SelectLocationHead
-            value={head}
+                value={field.value.substring(0, 2) as LocationHead}
-            onChange={setHead}
+                onChange={newValue => field.onChange(combineLocation(newValue, field.value.substring(3)))}
-            excluded={!user?.is_staff ? [LocationHead.LIBRARY] : []}
+                excluded={!user.is_staff ? [LocationHead.LIBRARY] : []}
+              />
+            )}
           />
         </div>
-        <SelectLocationContext value={location} onChange={handleSelectLocation} />
+        <Controller
+          control={control} //
+          name='location'
+          render={({ field }) => (
+            <SelectLocationContext
+              value={field.value} //
+              onChange={field.onChange}
+            />
+          )}
+        />
+        <Controller
+          control={control} //
+          name='location'
+          render={({ field }) => (
             <TextArea
               id='dlg_cst_body'
               label='Путь'
               rows={4}
-          value={body}
+              value={field.value.substring(3)}
-          onChange={event => setBody(event.target.value)}
+              onChange={event => field.onChange(combineLocation(field.value.substring(0, 2), event.target.value))}
+              error={errors.location}
+            />
+          )}
         />
       </div>
 
       <div className='flex justify-around gap-6 py-3'>
-        <SubmitButton text='Создать схему' loading={isPending} className='min-w-[10rem]' disabled={!isValid} />
+        <SubmitButton text='Создать схему' loading={isPending} className='min-w-[10rem]' />
         <Button text='Отмена' className='min-w-[10rem]' onClick={() => handleCancel()} />
       </div>
-      {error ? <InfoError error={error} /> : null}
+      {serverError ? <InfoError error={serverError} /> : null}
     </form>
   );
 }

rsconcept/frontend/src/pages/LibraryPage/ToolbarSearch.tsx

@@ -127,7 +127,7 @@ function ToolbarSearch({ total, filtered }: ToolbarSearchProps) {
               placeholder='Выберите владельца'
               className='min-w-[15rem] text-sm mx-1 mb-1'
               value={filterUser}
-              onSelectValue={setFilterUser}
+              onChange={setFilterUser}
             />
           </Dropdown>
         </div>

rsconcept/frontend/src/pages/LibraryPage/ViewSideLocation.tsx

@@ -34,7 +34,7 @@ function ViewSideLocation({ isVisible, onRenameLocation }: ViewSideLocationProps
   const toggleSubfolders = useLibrarySearchStore(state => state.toggleSubfolders);
 
   const canRename = (() => {
-    if (location.length <= 3 || isAnonymous || !user) {
+    if (location.length <= 3 || isAnonymous) {
       return false;
     }
     if (user.is_staff) {

rsconcept/frontend/src/pages/LoginPage.tsx

@@ -1,11 +1,13 @@
 'use client';
 
+import { zodResolver } from '@hookform/resolvers/zod';
 import axios from 'axios';
 import clsx from 'clsx';
-import { useEffect, useState } from 'react';
+import { useForm } from 'react-hook-form';
 
 import { useConceptNavigation } from '@/app/Navigation/NavigationContext';
 import { urls } from '@/app/urls';
+import { IUserLoginDTO, UserLoginSchema } from '@/backend/auth/api';
 import { useAuthSuspense } from '@/backend/auth/useAuth';
 import { useLogin } from '@/backend/auth/useLogin';
 import ExpectedAnonymous from '@/components/ExpectedAnonymous';
@@ -19,22 +21,25 @@ import { resources } from '@/utils/constants';
 function LoginPage() {
   const router = useConceptNavigation();
   const query = useQueryStrings();
-  const userQuery = query.get('username');
+  const initialName = query.get('username') ?? '';
+
+  const {
+    register,
+    handleSubmit,
+    clearErrors,
+    resetField,
+    formState: { errors }
+  } = useForm({
+    resolver: zodResolver(UserLoginSchema),
+    defaultValues: { username: initialName, password: '' }
+  });
 
   const { isAnonymous } = useAuthSuspense();
-  const { login, isPending, error, reset } = useLogin();
+  const { login, isPending, error: serverError, reset: clearServerError } = useLogin();
 
-  const [username, setUsername] = useState(userQuery || '');
+  function onSubmit(data: IUserLoginDTO) {
-  const [password, setPassword] = useState('');
+    login(data, () => {
-
+      resetField('password');
-  useEffect(() => {
-    reset();
-  }, [username, password, reset]);
-
-  function handleSubmit(event: React.FormEvent<HTMLFormElement>) {
-    event.preventDefault();
-    if (!isPending) {
-      login(username, password, () => {
       if (router.canBack()) {
         router.back();
       } else {
@@ -42,47 +47,49 @@ function LoginPage() {
       }
     });
   }
+
+  function resetErrors() {
+    clearServerError();
+    clearErrors();
   }
 
   if (!isAnonymous) {
     return <ExpectedAnonymous />;
   }
   return (
-    <form className={clsx('cc-column cc-fade-in', 'w-[24rem] mx-auto', 'pt-12 pb-6 px-6')} onSubmit={handleSubmit}>
+    <form
+      className={clsx('cc-column cc-fade-in', 'w-[24rem] mx-auto', 'pt-12 pb-6 px-6')}
+      onSubmit={event => void handleSubmit(onSubmit)(event)}
+      onChange={resetErrors}
+    >
       <img alt='Концепт Портал' src={resources.logo} className='max-h-[2.5rem] min-w-[2.5rem] mb-3' />
       <TextInput
         id='username'
-        label='Логин или email'
         autoComplete='username'
+        label='Логин или email'
+        {...register('username')}
         autoFocus
-        required
         allowEnter
         spellCheck={false}
-        value={username}
+        defaultValue={initialName}
-        onChange={event => setUsername(event.target.value)}
+        error={errors.username}
       />
       <TextInput
         id='password'
+        {...register('password')}
         type='password'
-        label='Пароль'
         autoComplete='current-password'
-        required
+        label='Пароль'
         allowEnter
-        value={password}
+        error={errors.password}
-        onChange={event => setPassword(event.target.value)}
       />
 
-      <SubmitButton
+      <SubmitButton text='Войти' className='self-center w-[12rem] mt-3' loading={isPending} />
-        text='Войти'
-        className='self-center w-[12rem] mt-3'
-        loading={isPending}
-        disabled={!username || !password}
-      />
       <div className='flex flex-col text-sm'>
         <TextURL text='Восстановить пароль...' href='/restore-password' />
         <TextURL text='Нет аккаунта? Зарегистрируйтесь...' href='/signup' />
       </div>
-      {error ? <ProcessError error={error} /> : null}
+      {serverError ? <ServerError error={serverError} /> : null}
     </form>
   );
 }
@@ -90,7 +97,7 @@ function LoginPage() {
 export default LoginPage;
 
 // ====== Internals =========
-function ProcessError({ error }: { error: ErrorData }): React.ReactElement {
+function ServerError({ error }: { error: ErrorData }): React.ReactElement | null {
   if (axios.isAxiosError(error) && error.response && error.response.status === 400) {
     return (
       <div className='text-sm select-text text-warn-600'>