R: Refactor layout management

rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx

@@ -10,18 +10,16 @@ import { ModalForm } from '@/components/modal';
 import { TabLabel, TabList, TabPanel, Tabs } from '@/components/tabs';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type ICreateBlockDTO, type IOssLayout, schemaCreateBlock } from '../../backend/types';
+import { type ICreateBlockDTO, schemaCreateBlock } from '../../backend/types';
 import { useCreateBlock } from '../../backend/use-create-block';
-import { type IOperationSchema } from '../../models/oss';
-import { calculateNewBlockPosition } from '../../models/oss-api';
+import { type LayoutManager } from '../../models/oss-layout-api';
 import { BLOCK_NODE_MIN_HEIGHT, BLOCK_NODE_MIN_WIDTH } from '../../pages/oss-page/editor-oss-graph/graph/block-node';
 
 import { TabBlockCard } from './tab-block-card';
 import { TabBlockChildren } from './tab-block-children';
 
 export interface DlgCreateBlockProps {
-  oss: IOperationSchema;
-  layout: IOssLayout;
+  manager: LayoutManager;
   initialInputs: number[];
   defaultX: number;
   defaultY: number;
@@ -37,7 +35,7 @@ export type TabID = (typeof TabID)[keyof typeof TabID];
 export function DlgCreateBlock() {
   const { createBlock } = useCreateBlock();
 
-  const { oss, layout, initialInputs, onCreate, defaultX, defaultY } = useDialogsStore(
+  const { manager, initialInputs, onCreate, defaultX, defaultY } = useDialogsStore(
     state => state.props as DlgCreateBlockProps
   );
 
@@ -55,21 +53,21 @@ export function DlgCreateBlock() {
       height: BLOCK_NODE_MIN_HEIGHT,
       children_blocks: initialInputs.filter(id => id < 0).map(id => -id),
       children_operations: initialInputs.filter(id => id > 0),
-      layout: layout
+      layout: manager.layout
     },
     mode: 'onChange'
   });
   const title = useWatch({ control: methods.control, name: 'item_data.title' });
   const [activeTab, setActiveTab] = useState<TabID>(TabID.CARD);
-  const isValid = !!title && !oss.blocks.some(block => block.title === title);
+  const isValid = !!title && !manager.oss.blocks.some(block => block.title === title);
 
   function onSubmit(data: ICreateBlockDTO) {
-    const rectangle = calculateNewBlockPosition(data, layout);
+    const rectangle = manager.calculateNewBlockPosition(data);
     data.position_x = rectangle.x;
     data.position_y = rectangle.y;
     data.width = rectangle.width;
     data.height = rectangle.height;
-    void createBlock({ itemID: oss.id, data: data }).then(response => onCreate?.(response.new_block.id));
+    void createBlock({ itemID: manager.oss.id, data: data }).then(response => onCreate?.(response.new_block.id));
   }
 
   return (

rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx

@@ -11,7 +11,7 @@ import { SelectParent } from '../../components/select-parent';
 import { type DlgCreateBlockProps } from './dlg-create-block';
 
 export function TabBlockCard() {
-  const { oss } = useDialogsStore(state => state.props as DlgCreateBlockProps);
+  const { manager } = useDialogsStore(state => state.props as DlgCreateBlockProps);
   const {
     register,
     control,
@@ -31,8 +31,8 @@ export function TabBlockCard() {
         control={control}
         render={({ field }) => (
           <SelectParent
-            items={oss.blocks}
-            value={field.value ? oss.blockByID.get(field.value) ?? null : null}
+            items={manager.oss.blocks}
+            value={field.value ? manager.oss.blockByID.get(field.value) ?? null : null}
             placeholder='Блок содержания не выбран'
             onChange={value => field.onChange(value ? value.id : null)}
           />

rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx

@@ -11,7 +11,7 @@ import { type DlgCreateBlockProps } from './dlg-create-block';
 
 export function TabBlockChildren() {
   const { setValue, control } = useFormContext<ICreateBlockDTO>();
-  const { oss } = useDialogsStore(state => state.props as DlgCreateBlockProps);
+  const { manager } = useDialogsStore(state => state.props as DlgCreateBlockProps);
   const children_blocks = useWatch({ control, name: 'children_blocks' });
   const children_operations = useWatch({ control, name: 'children_operations' });
 
@@ -33,7 +33,12 @@ export function TabBlockChildren() {
   return (
     <div className='cc-fade-in cc-column'>
       <Label text={`Выбор содержания: [ ${value.length} ]`} />
-      <PickContents schema={oss} value={value} onChange={newValue => handleChangeSelected(newValue)} rows={10} />
+      <PickContents
+        schema={manager.oss}
+        value={value}
+        onChange={newValue => handleChangeSelected(newValue)}
+        rows={10}
+      />
     </div>
   );
 }

rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/dlg-create-operation.tsx

@@ -10,18 +10,16 @@ import { ModalForm } from '@/components/modal';
 import { TabLabel, TabList, TabPanel, Tabs } from '@/components/tabs';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type ICreateOperationDTO, type IOssLayout, OperationType, schemaCreateOperation } from '../../backend/types';
+import { type ICreateOperationDTO, OperationType, schemaCreateOperation } from '../../backend/types';
 import { useCreateOperation } from '../../backend/use-create-operation';
 import { describeOperationType, labelOperationType } from '../../labels';
-import { type IOperationSchema } from '../../models/oss';
-import { calculateNewOperationPosition } from '../../models/oss-api';
+import { type LayoutManager } from '../../models/oss-layout-api';
 
 import { TabInputOperation } from './tab-input-operation';
 import { TabSynthesisOperation } from './tab-synthesis-operation';
 
 export interface DlgCreateOperationProps {
-  oss: IOperationSchema;
-  layout: IOssLayout;
+  manager: LayoutManager;
   initialParent: number | null;
   initialInputs: number[];
   defaultX: number;
@@ -38,7 +36,7 @@ export type TabID = (typeof TabID)[keyof typeof TabID];
 export function DlgCreateOperation() {
   const { createOperation } = useCreateOperation();
 
-  const { oss, layout, initialInputs, initialParent, onCreate, defaultX, defaultY } = useDialogsStore(
+  const { manager, initialInputs, initialParent, onCreate, defaultX, defaultY } = useDialogsStore(
     state => state.props as DlgCreateOperationProps
   );
 
@@ -57,19 +55,21 @@ export function DlgCreateOperation() {
       position_y: defaultY,
       arguments: initialInputs,
       create_schema: false,
-      layout: layout
+      layout: manager.layout
     },
     mode: 'onChange'
   });
   const alias = useWatch({ control: methods.control, name: 'item_data.alias' });
   const [activeTab, setActiveTab] = useState(initialInputs.length === 0 ? TabID.INPUT : TabID.SYNTHESIS);
-  const isValid = !!alias && !oss.operations.some(operation => operation.alias === alias);
+  const isValid = !!alias && !manager.oss.operations.some(operation => operation.alias === alias);
 
   function onSubmit(data: ICreateOperationDTO) {
-    const target = calculateNewOperationPosition(oss, data, layout);
+    const target = manager.calculateNewOperationPosition(data);
     data.position_x = target.x;
     data.position_y = target.y;
-    void createOperation({ itemID: oss.id, data: data }).then(response => onCreate?.(response.new_operation.id));
+    void createOperation({ itemID: manager.oss.id, data: data }).then(response =>
+      onCreate?.(response.new_operation.id)
+    );
   }
 
   function handleSelectTab(newTab: TabID, last: TabID) {

rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-input-operation.tsx

@@ -18,9 +18,9 @@ import { sortItemsForOSS } from '../../models/oss-api';
 import { type DlgCreateOperationProps } from './dlg-create-operation';
 
 export function TabInputOperation() {
-  const { oss } = useDialogsStore(state => state.props as DlgCreateOperationProps);
+  const { manager } = useDialogsStore(state => state.props as DlgCreateOperationProps);
   const { items: libraryItems } = useLibrary();
-  const sortedItems = sortItemsForOSS(oss, libraryItems);
+  const sortedItems = sortItemsForOSS(manager.oss, libraryItems);
 
   const {
     register,
@@ -31,7 +31,7 @@ export function TabInputOperation() {
   const createSchema = useWatch({ control, name: 'create_schema' });
 
   function baseFilter(item: ILibraryItem) {
-    return !oss.schemas.includes(item.id);
+    return !manager.oss.schemas.includes(item.id);
   }
 
   function handleChangeCreateSchema(value: boolean) {
@@ -75,8 +75,8 @@ export function TabInputOperation() {
             control={control}
             render={({ field }) => (
               <SelectParent
-                items={oss.blocks}
-                value={field.value ? oss.blockByID.get(field.value) ?? null : null}
+                items={manager.oss.blocks}
+                value={field.value ? manager.oss.blockByID.get(field.value) ?? null : null}
                 placeholder='Блок содержания'
                 onChange={value => field.onChange(value ? value.id : null)}
               />

rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-synthesis-operation.tsx

@@ -10,7 +10,7 @@ import { SelectParent } from '../../components/select-parent';
 import { type DlgCreateOperationProps } from './dlg-create-operation';
 
 export function TabSynthesisOperation() {
-  const { oss } = useDialogsStore(state => state.props as DlgCreateOperationProps);
+  const { manager } = useDialogsStore(state => state.props as DlgCreateOperationProps);
   const {
     register,
     control,
@@ -40,8 +40,8 @@ export function TabSynthesisOperation() {
             control={control}
             render={({ field }) => (
               <SelectParent
-                items={oss.blocks}
-                value={field.value ? oss.blockByID.get(field.value) ?? null : null}
+                items={manager.oss.blocks}
+                value={field.value ? manager.oss.blockByID.get(field.value) ?? null : null}
                 placeholder='Блок содержания'
                 onChange={value => field.onChange(value ? value.id : null)}
               />
@@ -64,7 +64,7 @@ export function TabSynthesisOperation() {
           name='arguments'
           control={control}
           render={({ field }) => (
-            <PickMultiOperation items={oss.operations} value={field.value} onChange={field.onChange} rows={6} />
+            <PickMultiOperation items={manager.oss.operations} value={field.value} onChange={field.onChange} rows={6} />
           )}
         />
       </div>

rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx

@@ -7,19 +7,19 @@ import { TextArea, TextInput } from '@/components/input';
 import { ModalForm } from '@/components/modal';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type IOssLayout, type IUpdateBlockDTO, schemaUpdateBlock } from '../backend/types';
+import { type IUpdateBlockDTO, schemaUpdateBlock } from '../backend/types';
 import { useUpdateBlock } from '../backend/use-update-block';
 import { SelectParent } from '../components/select-parent';
-import { type IBlock, type IOperationSchema } from '../models/oss';
+import { type IBlock } from '../models/oss';
+import { type LayoutManager } from '../models/oss-layout-api';
 
 export interface DlgEditBlockProps {
-  oss: IOperationSchema;
+  manager: LayoutManager;
   target: IBlock;
-  layout: IOssLayout;
 }
 
 export function DlgEditBlock() {
-  const { oss, target, layout } = useDialogsStore(state => state.props as DlgEditBlockProps);
+  const { manager, target } = useDialogsStore(state => state.props as DlgEditBlockProps);
   const { updateBlock } = useUpdateBlock();
 
   const {
@@ -36,13 +36,13 @@ export function DlgEditBlock() {
         description: target.description,
         parent: target.parent
       },
-      layout: layout
+      layout: manager.layout
     },
     mode: 'onChange'
   });
 
   function onSubmit(data: IUpdateBlockDTO) {
-    return updateBlock({ itemID: oss.id, data });
+    return updateBlock({ itemID: manager.oss.id, data });
   }
 
   return (
@@ -64,8 +64,8 @@ export function DlgEditBlock() {
         control={control}
         render={({ field }) => (
           <SelectParent
-            items={oss.blocks.filter(block => block.id !== target.id)}
-            value={field.value ? oss.blockByID.get(field.value) ?? null : null}
+            items={manager.oss.blocks.filter(block => block.id !== target.id)}
+            value={field.value ? manager.oss.blockByID.get(field.value) ?? null : null}
             placeholder='Блок содержания не выбран'
             onChange={value => field.onChange(value ? value.id : null)}
           />

rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx

@@ -11,18 +11,18 @@ import { ModalForm } from '@/components/modal';
 import { TabLabel, TabList, TabPanel, Tabs } from '@/components/tabs';
 import { useDialogsStore } from '@/stores/dialogs';
 
-import { type IOssLayout, type IUpdateOperationDTO, OperationType, schemaUpdateOperation } from '../../backend/types';
+import { type IUpdateOperationDTO, OperationType, schemaUpdateOperation } from '../../backend/types';
 import { useUpdateOperation } from '../../backend/use-update-operation';
-import { type IOperation, type IOperationSchema } from '../../models/oss';
+import { type IOperation } from '../../models/oss';
+import { type LayoutManager } from '../../models/oss-layout-api';
 
 import { TabArguments } from './tab-arguments';
 import { TabOperation } from './tab-operation';
 import { TabSynthesis } from './tab-synthesis';
 
 export interface DlgEditOperationProps {
-  oss: IOperationSchema;
+  manager: LayoutManager;
   target: IOperation;
-  layout: IOssLayout;
 }
 
 export const TabID = {
@@ -33,7 +33,7 @@ export const TabID = {
 export type TabID = (typeof TabID)[keyof typeof TabID];
 
 export function DlgEditOperation() {
-  const { oss, target, layout } = useDialogsStore(state => state.props as DlgEditOperationProps);
+  const { manager, target } = useDialogsStore(state => state.props as DlgEditOperationProps);
   const { updateOperation } = useUpdateOperation();
 
   const methods = useForm<IUpdateOperationDTO>({
@@ -51,14 +51,17 @@ export function DlgEditOperation() {
         original: sub.original,
         substitution: sub.substitution
       })),
-      layout: layout
+      layout: manager.layout
     },
     mode: 'onChange'
   });
   const [activeTab, setActiveTab] = useState<TabID>(TabID.CARD);
 
   function onSubmit(data: IUpdateOperationDTO) {
-    return updateOperation({ itemID: oss.id, data });
+    // if (data.item_data.parent !== target.parent) {
+    //   data.layout = updateLayoutOnOperationChange(data.target, data.item_data.parent, data.layout);
+    // }
+    return updateOperation({ itemID: manager.oss.id, data });
   }
 
   return (

rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-arguments.tsx

@@ -11,9 +11,9 @@ import { type DlgEditOperationProps } from './dlg-edit-operation';
 
 export function TabArguments() {
   const { control, setValue } = useFormContext<IUpdateOperationDTO>();
-  const { oss, target } = useDialogsStore(state => state.props as DlgEditOperationProps);
-  const potentialCycle = [target.id, ...oss.graph.expandAllOutputs([target.id])];
-  const filtered = oss.operations.filter(item => !potentialCycle.includes(item.id));
+  const { manager, target } = useDialogsStore(state => state.props as DlgEditOperationProps);
+  const potentialCycle = [target.id, ...manager.oss.graph.expandAllOutputs([target.id])];
+  const filtered = manager.oss.operations.filter(item => !potentialCycle.includes(item.id));
 
   function handleChangeArguments(prev: number[], newValue: number[]) {
     setValue('arguments', newValue, { shouldValidate: true });

rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx

@@ -9,7 +9,7 @@ import { SelectParent } from '../../components/select-parent';
 import { type DlgEditOperationProps } from './dlg-edit-operation';
 
 export function TabOperation() {
-  const { oss } = useDialogsStore(state => state.props as DlgEditOperationProps);
+  const { manager } = useDialogsStore(state => state.props as DlgEditOperationProps);
   const {
     register,
     control,
@@ -37,8 +37,8 @@ export function TabOperation() {
         control={control}
         render={({ field }) => (
           <SelectParent
-            items={oss.blocks}
-            value={field.value ? oss.blockByID.get(field.value) ?? null : null}
+            items={manager.oss.blocks}
+            value={field.value ? manager.oss.blockByID.get(field.value) ?? null : null}
             placeholder='Блок содержания'
             onChange={value => field.onChange(value ? value.id : null)}
           />

rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-synthesis.tsx

@@ -14,13 +14,13 @@ import { SubstitutionValidator } from '../../models/oss-api';
 import { type DlgEditOperationProps } from './dlg-edit-operation';
 
 export function TabSynthesis() {
-  const { oss } = useDialogsStore(state => state.props as DlgEditOperationProps);
+  const { manager } = useDialogsStore(state => state.props as DlgEditOperationProps);
   const { control } = useFormContext<IUpdateOperationDTO>();
   const inputs = useWatch({ control, name: 'arguments' });
   const substitutions = useWatch({ control, name: 'substitutions' });
 
   const schemasIDs = inputs
-    .map(id => oss.operationByID.get(id)!)
+    .map(id => manager.oss.operationByID.get(id)!)
     .map(operation => operation.result)
     .filter(id => id !== null);
   const schemas = useRSForms(schemasIDs);

rsconcept/frontend/src/features/oss/models/oss-api.ts

@@ -22,17 +22,9 @@ import {
 import { infoMsg } from '@/utils/labels';
 
 import { Graph } from '../../../models/graph';
-import { type ICreateBlockDTO, type ICreateOperationDTO, type IOssLayout } from '../backend/types';
 import { describeSubstitutionError } from '../labels';
-import { OPERATION_NODE_HEIGHT, OPERATION_NODE_WIDTH } from '../pages/oss-page/editor-oss-graph/graph/node-core';
 
 import { type IOperationSchema, type IOssItem, SubstitutionErrorType } from './oss';
-import { type Position2D, type Rectangle2D } from './oss-layout';
-
-export const GRID_SIZE = 10; // pixels - size of OSS grid
-const MIN_DISTANCE = 2 * GRID_SIZE; // pixels - minimum distance between nodes
-const DISTANCE_X = 180; // pixels - insert x-distance between node centers
-const DISTANCE_Y = 100; // pixels - insert y-distance between node centers
 
 const STARTING_SUB_INDEX = 900; // max semantic index for starting substitution
 
@@ -477,100 +469,3 @@ export function getRelocateCandidates(
   const unreachable = schema.graph.expandAllOutputs(unreachableBases);
   return addedCst.filter(cst => !unreachable.includes(cst.id));
 }
-
-/** Calculate insert position for a new {@link IOperation} */
-export function calculateNewOperationPosition(
-  oss: IOperationSchema,
-  data: ICreateOperationDTO,
-  layout: IOssLayout
-): Position2D {
-  // TODO: check parent node
-
-  const result = { x: data.position_x, y: data.position_y };
-  const operations = layout.operations;
-  if (operations.length === 0) {
-    return result;
-  }
-
-  if (data.arguments.length === 0) {
-    let inputsPositions = operations.filter(pos =>
-      oss.operations.find(operation => operation.arguments.length === 0 && operation.id === pos.id)
-    );
-    if (inputsPositions.length === 0) {
-      inputsPositions = operations;
-    }
-    const maxX = Math.max(...inputsPositions.map(node => node.x));
-    const minY = Math.min(...inputsPositions.map(node => node.y));
-    result.x = maxX + DISTANCE_X;
-    result.y = minY;
-  } else {
-    const argNodes = operations.filter(pos => data.arguments.includes(pos.id));
-    const maxY = Math.max(...argNodes.map(node => node.y));
-    const minX = Math.min(...argNodes.map(node => node.x));
-    const maxX = Math.max(...argNodes.map(node => node.x));
-    result.x = Math.ceil((maxX + minX) / 2 / GRID_SIZE) * GRID_SIZE;
-    result.y = maxY + DISTANCE_Y;
-  }
-
-  let flagIntersect = false;
-  do {
-    flagIntersect = operations.some(
-      position => Math.abs(position.x - result.x) < MIN_DISTANCE && Math.abs(position.y - result.y) < MIN_DISTANCE
-    );
-    if (flagIntersect) {
-      result.x += MIN_DISTANCE;
-      result.y += MIN_DISTANCE;
-    }
-  } while (flagIntersect);
-  return result;
-}
-
-/** Calculate insert position for a new {@link IBlock} */
-export function calculateNewBlockPosition(data: ICreateBlockDTO, layout: IOssLayout): Rectangle2D {
-  const block_nodes = data.children_blocks
-    .map(id => layout.blocks.find(block => block.id === id))
-    .filter(node => !!node);
-  const operation_nodes = data.children_operations
-    .map(id => layout.operations.find(operation => operation.id === id))
-    .filter(node => !!node);
-
-  if (block_nodes.length === 0 && operation_nodes.length === 0) {
-    return { x: data.position_x, y: data.position_y, width: data.width, height: data.height };
-  }
-
-  let left = undefined;
-  let top = undefined;
-  let right = undefined;
-  let bottom = undefined;
-
-  for (const block of block_nodes) {
-    left = !left ? block.x - MIN_DISTANCE : Math.min(left, block.x - MIN_DISTANCE);
-    top = !top ? block.y - MIN_DISTANCE : Math.min(top, block.y - MIN_DISTANCE);
-    right = !right
-      ? Math.max(left + data.width, block.x + block.width + MIN_DISTANCE)
-      : Math.max(right, block.x + block.width + MIN_DISTANCE);
-    bottom = !bottom
-      ? Math.max(top + data.height, block.y + block.height + MIN_DISTANCE)
-      : Math.max(bottom, block.y + block.height + MIN_DISTANCE);
-  }
-
-  console.log('left, top, right, bottom', left, top, right, bottom);
-
-  for (const operation of operation_nodes) {
-    left = !left ? operation.x - MIN_DISTANCE : Math.min(left, operation.x - MIN_DISTANCE);
-    top = !top ? operation.y - MIN_DISTANCE : Math.min(top, operation.y - MIN_DISTANCE);
-    right = !right
-      ? Math.max(left + data.width, operation.x + OPERATION_NODE_WIDTH + MIN_DISTANCE)
-      : Math.max(right, operation.x + OPERATION_NODE_WIDTH + MIN_DISTANCE);
-    bottom = !bottom
-      ? Math.max(top + data.height, operation.y + OPERATION_NODE_HEIGHT + MIN_DISTANCE)
-      : Math.max(bottom, operation.y + OPERATION_NODE_HEIGHT + MIN_DISTANCE);
-  }
-
-  return {
-    x: left ?? data.position_x,
-    y: top ?? data.position_y,
-    width: right && left ? right - left : data.width,
-    height: bottom && top ? bottom - top : data.height
-  };
-}

rsconcept/frontend/src/features/oss/models/oss-layout-api.ts

@@ -0,0 +1,120 @@
+import { type ICreateBlockDTO, type ICreateOperationDTO, type IOssLayout } from '../backend/types';
+
+import { type IOperationSchema } from './oss';
+import { type Position2D, type Rectangle2D } from './oss-layout';
+
+export const GRID_SIZE = 10; // pixels - size of OSS grid
+const MIN_DISTANCE = 2 * GRID_SIZE; // pixels - minimum distance between nodes
+const DISTANCE_X = 180; // pixels - insert x-distance between node centers
+const DISTANCE_Y = 100; // pixels - insert y-distance between node centers
+
+const OPERATION_NODE_WIDTH = 150;
+const OPERATION_NODE_HEIGHT = 40;
+
+/** Layout manipulations for {@link IOperationSchema}. */
+export class LayoutManager {
+  public oss: IOperationSchema;
+  public layout: IOssLayout;
+
+  constructor(oss: IOperationSchema, layout?: IOssLayout) {
+    this.oss = oss;
+    if (layout) {
+      this.layout = layout;
+    } else {
+      this.layout = this.oss.layout;
+    }
+  }
+
+  /** Calculate insert position for a new {@link IOperation} */
+  calculateNewOperationPosition(data: ICreateOperationDTO): Position2D {
+    // TODO: check parent node
+
+    const result = { x: data.position_x, y: data.position_y };
+    const operations = this.layout.operations;
+    if (operations.length === 0) {
+      return result;
+    }
+
+    if (data.arguments.length === 0) {
+      let inputsPositions = operations.filter(pos =>
+        this.oss.operations.find(operation => operation.arguments.length === 0 && operation.id === pos.id)
+      );
+      if (inputsPositions.length === 0) {
+        inputsPositions = operations;
+      }
+      const maxX = Math.max(...inputsPositions.map(node => node.x));
+      const minY = Math.min(...inputsPositions.map(node => node.y));
+      result.x = maxX + DISTANCE_X;
+      result.y = minY;
+    } else {
+      const argNodes = operations.filter(pos => data.arguments.includes(pos.id));
+      const maxY = Math.max(...argNodes.map(node => node.y));
+      const minX = Math.min(...argNodes.map(node => node.x));
+      const maxX = Math.max(...argNodes.map(node => node.x));
+      result.x = Math.ceil((maxX + minX) / 2 / GRID_SIZE) * GRID_SIZE;
+      result.y = maxY + DISTANCE_Y;
+    }
+
+    let flagIntersect = false;
+    do {
+      flagIntersect = operations.some(
+        position => Math.abs(position.x - result.x) < MIN_DISTANCE && Math.abs(position.y - result.y) < MIN_DISTANCE
+      );
+      if (flagIntersect) {
+        result.x += MIN_DISTANCE;
+        result.y += MIN_DISTANCE;
+      }
+    } while (flagIntersect);
+    return result;
+  }
+
+  /** Calculate insert position for a new {@link IBlock} */
+  calculateNewBlockPosition(data: ICreateBlockDTO): Rectangle2D {
+    const block_nodes = data.children_blocks
+      .map(id => this.layout.blocks.find(block => block.id === id))
+      .filter(node => !!node);
+    const operation_nodes = data.children_operations
+      .map(id => this.layout.operations.find(operation => operation.id === id))
+      .filter(node => !!node);
+
+    if (block_nodes.length === 0 && operation_nodes.length === 0) {
+      return { x: data.position_x, y: data.position_y, width: data.width, height: data.height };
+    }
+
+    let left = undefined;
+    let top = undefined;
+    let right = undefined;
+    let bottom = undefined;
+
+    for (const block of block_nodes) {
+      left = !left ? block.x - MIN_DISTANCE : Math.min(left, block.x - MIN_DISTANCE);
+      top = !top ? block.y - MIN_DISTANCE : Math.min(top, block.y - MIN_DISTANCE);
+      right = !right
+        ? Math.max(left + data.width, block.x + block.width + MIN_DISTANCE)
+        : Math.max(right, block.x + block.width + MIN_DISTANCE);
+      bottom = !bottom
+        ? Math.max(top + data.height, block.y + block.height + MIN_DISTANCE)
+        : Math.max(bottom, block.y + block.height + MIN_DISTANCE);
+    }
+
+    console.log('left, top, right, bottom', left, top, right, bottom);
+
+    for (const operation of operation_nodes) {
+      left = !left ? operation.x - MIN_DISTANCE : Math.min(left, operation.x - MIN_DISTANCE);
+      top = !top ? operation.y - MIN_DISTANCE : Math.min(top, operation.y - MIN_DISTANCE);
+      right = !right
+        ? Math.max(left + data.width, operation.x + OPERATION_NODE_WIDTH + MIN_DISTANCE)
+        : Math.max(right, operation.x + OPERATION_NODE_WIDTH + MIN_DISTANCE);
+      bottom = !bottom
+        ? Math.max(top + data.height, operation.y + OPERATION_NODE_HEIGHT + MIN_DISTANCE)
+        : Math.max(bottom, operation.y + OPERATION_NODE_HEIGHT + MIN_DISTANCE);
+    }
+
+    return {
+      x: left ?? data.position_x,
+      y: top ?? data.position_y,
+      width: right && left ? right - left : data.width,
+      height: bottom && top ? bottom - top : data.height
+    };
+  }
+}

rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/context-menu.tsx

@@ -2,11 +2,10 @@
 
 import { useRef } from 'react';
 
-import { isOperation } from '@/features/oss/models/oss-api';
-
 import { Dropdown } from '@/components/dropdown';
 
 import { type IBlock, type IOperation, type IOssItem } from '../../../../models/oss';
+import { isOperation } from '../../../../models/oss-api';
 
 import { MenuBlock } from './menu-block';
 import { MenuOperation } from './menu-operation';

rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-block.tsx

@@ -1,13 +1,13 @@
 'use client';
 
-import { useDeleteBlock } from '@/features/oss/backend/use-delete-block';
-
 import { DropdownButton } from '@/components/dropdown';
 import { IconDestroy, IconEdit2 } from '@/components/icons';
 import { useDialogsStore } from '@/stores/dialogs';
 
+import { useDeleteBlock } from '../../../../backend/use-delete-block';
 import { useMutatingOss } from '../../../../backend/use-mutating-oss';
 import { type IBlock } from '../../../../models/oss';
+import { LayoutManager } from '../../../../models/oss-layout-api';
 import { useOssEdit } from '../../oss-edit-context';
 import { useGetLayout } from '../use-get-layout';
 
@@ -30,9 +30,8 @@ export function MenuBlock({ block, onHide }: MenuBlockProps) {
     }
     onHide();
     showEditBlock({
-      oss: schema,
-      target: block,
-      layout: getLayout()
+      manager: new LayoutManager(schema, getLayout()),
+      target: block
     });
   }
 

rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/context-menu/menu-operation.tsx

@@ -3,8 +3,6 @@ import { toast } from 'react-toastify';
 
 import { urls, useConceptNavigation } from '@/app';
 import { useLibrary } from '@/features/library/backend/use-library';
-import { useCreateInput } from '@/features/oss/backend/use-create-input';
-import { useExecuteOperation } from '@/features/oss/backend/use-execute-operation';
 
 import { DropdownButton } from '@/components/dropdown';
 import {
@@ -21,8 +19,11 @@ import { errorMsg } from '@/utils/labels';
 import { prepareTooltip } from '@/utils/utils';
 
 import { OperationType } from '../../../../backend/types';
+import { useCreateInput } from '../../../../backend/use-create-input';
+import { useExecuteOperation } from '../../../../backend/use-execute-operation';
 import { useMutatingOss } from '../../../../backend/use-mutating-oss';
 import { type IOperation } from '../../../../models/oss';
+import { LayoutManager } from '../../../../models/oss-layout-api';
 import { useOssEdit } from '../../oss-edit-context';
 import { useGetLayout } from '../use-get-layout';
 
@@ -93,9 +94,8 @@ export function MenuOperation({ operation, onHide }: MenuOperationProps) {
     }
     onHide();
     showEditOperation({
-      oss: schema,
-      target: operation,
-      layout: getLayout()
+      manager: new LayoutManager(schema, getLayout()),
+      target: operation
     });
   }
 

rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/block-node.tsx

@@ -3,13 +3,12 @@
 import { NodeResizeControl } from 'reactflow';
 import clsx from 'clsx';
 
-import { useOperationTooltipStore } from '@/features/oss/stores/operation-tooltip';
-import { useOSSGraphStore } from '@/features/oss/stores/oss-graph';
-
 import { IconResize } from '@/components/icons';
 import { globalIDs } from '@/utils/constants';
 
 import { type BlockInternalNode } from '../../../../models/oss-layout';
+import { useOperationTooltipStore } from '../../../../stores/operation-tooltip';
+import { useOSSGraphStore } from '../../../../stores/oss-graph';
 import { useOssEdit } from '../../oss-edit-context';
 import { useOssFlow } from '../oss-flow-context';
 

rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/node-core.tsx

@@ -2,8 +2,6 @@
 
 import clsx from 'clsx';
 
-import { useOSSGraphStore } from '@/features/oss/stores/oss-graph';
-
 import { IconConsolidation, IconRSForm } from '@/components/icons';
 import { cn } from '@/components/utils';
 import { Indicator } from '@/components/view';
@@ -12,11 +10,9 @@ import { globalIDs } from '@/utils/constants';
 import { OperationType } from '../../../../backend/types';
 import { type OperationInternalNode } from '../../../../models/oss-layout';
 import { useOperationTooltipStore } from '../../../../stores/operation-tooltip';
+import { useOSSGraphStore } from '../../../../stores/oss-graph';
 import { useOssEdit } from '../../oss-edit-context';
 
-export const OPERATION_NODE_WIDTH = 150;
-export const OPERATION_NODE_HEIGHT = 40;
-
 // characters - threshold for long labels - small font
 const LONG_LABEL_CHARS = 14;
 

rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx

@@ -13,20 +13,19 @@ import {
 } from 'reactflow';
 import clsx from 'clsx';
 
-import { useDeleteBlock } from '@/features/oss/backend/use-delete-block';
-import { useMoveItems } from '@/features/oss/backend/use-move-items';
-import { type IOperationSchema } from '@/features/oss/models/oss';
-
 import { useThrottleCallback } from '@/hooks/use-throttle-callback';
 import { useMainHeight } from '@/stores/app-layout';
 import { useDialogsStore } from '@/stores/dialogs';
 import { PARAMETER } from '@/utils/constants';
 import { promptText } from '@/utils/labels';
 
+import { useDeleteBlock } from '../../../backend/use-delete-block';
+import { useMoveItems } from '../../../backend/use-move-items';
 import { useMutatingOss } from '../../../backend/use-mutating-oss';
 import { useUpdateLayout } from '../../../backend/use-update-layout';
-import { GRID_SIZE } from '../../../models/oss-api';
+import { type IOperationSchema } from '../../../models/oss';
 import { type OssNode, type Position2D } from '../../../models/oss-layout';
+import { GRID_SIZE, LayoutManager } from '../../../models/oss-layout-api';
 import { useOperationTooltipStore } from '../../../stores/operation-tooltip';
 import { useOSSGraphStore } from '../../../stores/oss-graph';
 import { useOssEdit } from '../oss-edit-context';
@@ -153,10 +152,9 @@ export function OssFlow() {
   function handleCreateOperation() {
     const targetPosition = screenToFlowPosition({ x: window.innerWidth / 2, y: window.innerHeight / 2 });
     showCreateOperation({
-      oss: schema,
+      manager: new LayoutManager(schema, getLayout()),
       defaultX: targetPosition.x,
       defaultY: targetPosition.y,
-      layout: getLayout(),
       initialInputs: selected.filter(id => id > 0),
       initialParent: extractSingleBlock(selected),
       onCreate: () =>
@@ -167,10 +165,9 @@ export function OssFlow() {
   function handleCreateBlock() {
     const targetPosition = screenToFlowPosition({ x: window.innerWidth / 2, y: window.innerHeight / 2 });
     showCreateBlock({
-      oss: schema,
+      manager: new LayoutManager(schema, getLayout()),
       defaultX: targetPosition.x,
       defaultY: targetPosition.y,
-      layout: getLayout(),
       initialInputs: selected,
       onCreate: () =>
         setTimeout(() => fitView({ duration: PARAMETER.zoomDuration, padding: VIEW_PADDING }), PARAMETER.refreshTimeout)
@@ -226,9 +223,8 @@ export function OssFlow() {
       const block = schema.blockByID.get(-Number(node.id));
       if (block) {
         showEditBlock({
-          oss: schema,
-          target: block,
-          layout: getLayout()
+          manager: new LayoutManager(schema, getLayout()),
+          target: block
         });
       }
     } else {

rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/toolbar-oss-graph.tsx

@@ -5,8 +5,6 @@ import { useReactFlow } from 'reactflow';
 
 import { HelpTopic } from '@/features/help';
 import { BadgeHelp } from '@/features/help/components';
-import { useExecuteOperation } from '@/features/oss/backend/use-execute-operation';
-import { useUpdateLayout } from '@/features/oss/backend/use-update-layout';
 
 import { MiniButton } from '@/components/control';
 import {
@@ -28,7 +26,10 @@ import { PARAMETER } from '@/utils/constants';
 import { prepareTooltip } from '@/utils/utils';
 
 import { OperationType } from '../../../backend/types';
+import { useExecuteOperation } from '../../../backend/use-execute-operation';
 import { useMutatingOss } from '../../../backend/use-mutating-oss';
+import { useUpdateLayout } from '../../../backend/use-update-layout';
+import { LayoutManager } from '../../../models/oss-layout-api';
 import { useOssEdit } from '../oss-edit-context';
 
 import { VIEW_PADDING } from './oss-flow';
@@ -114,15 +115,13 @@ export function ToolbarOssGraph({
   function handleEditItem() {
     if (selectedOperation) {
       showEditOperation({
-        oss: schema,
-        target: selectedOperation,
-        layout: getLayout()
+        manager: new LayoutManager(schema, getLayout()),
+        target: selectedOperation
       });
     } else if (selectedBlock) {
       showEditBlock({
-        oss: schema,
-        target: selectedBlock,
-        layout: getLayout()
+        manager: new LayoutManager(schema, getLayout()),
+        target: selectedBlock
       });
     }
   }

rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/use-get-layout.tsx

@@ -1,9 +1,8 @@
 import { type Node, useReactFlow } from 'reactflow';
 
-import { type IOssLayout } from '@/features/oss/backend/types';
-import { type IOperationSchema } from '@/features/oss/models/oss';
-import { type Position2D } from '@/features/oss/models/oss-layout';
-
+import { type IOssLayout } from '../../../backend/types';
+import { type IOperationSchema } from '../../../models/oss';
+import { type Position2D } from '../../../models/oss-layout';
 import { useOssEdit } from '../oss-edit-context';
 
 import { BLOCK_NODE_MIN_HEIGHT, BLOCK_NODE_MIN_WIDTH } from './graph/block-node';

rsconcept/frontend/src/features/rsform/pages/rsform-page/editor-rslist/toolbar-rslist.tsx

@@ -3,7 +3,6 @@ import clsx from 'clsx';
 import { HelpTopic } from '@/features/help';
 import { BadgeHelp } from '@/features/help/components';
 import { MiniSelectorOSS } from '@/features/library/components';
-import { CstType } from '@/features/rsform';
 
 import { MiniButton } from '@/components/control';
 import { Dropdown, DropdownButton, useDropdown } from '@/components/dropdown';
@@ -19,6 +18,7 @@ import {
 import { prefixes } from '@/utils/constants';
 import { prepareTooltip } from '@/utils/utils';
 
+import { CstType } from '../../../backend/types';
 import { useMutatingRSForm } from '../../../backend/use-mutating-rsform';
 import { IconCstType } from '../../../components/icon-cst-type';
 import { getCstTypeShortcut, labelCstType } from '../../../labels';

rsconcept/frontend/src/features/rsform/pages/rsform-page/editor-term-graph/graph/tg-node.tsx

@@ -3,12 +3,11 @@
 import { Handle, Position } from 'reactflow';
 import clsx from 'clsx';
 
-import { labelCstTypification } from '@/features/rsform/labels';
-
 import { APP_COLORS } from '@/styling/colors';
 import { globalIDs } from '@/utils/constants';
 
 import { colorBgGraphNode } from '../../../../colors';
+import { labelCstTypification } from '../../../../labels';
 import { type IConstituenta } from '../../../../models/rsform';
 import { useTermGraphStore } from '../../../../stores/term-graph';
 import { useRSEdit } from '../../rsedit-context';