Improve initial render logic

.changeset/eight-fishes-cheer.md

@@ -0,0 +1,7 @@
+---
+'@projectstorm/react-workspaces-core': minor
+---
+
+- New behavior to install auto recompute on overconstrained panels automatically
+- new widget to temp hide rendering until expand computation has completed initially (for expand nodes specifically)
+- some general code style and structure improvements

demo/.storybook/main.ts

@@ -17,6 +17,12 @@ const config: StorybookConfig = {
     return {
       ...config,
       devtool: 'inline-source-map',
+      resolve: {
+        ...config.resolve,
+        alias: {
+          '@emotion/react': require.resolve('@emotion/react')
+        }
+      },
       module: {
         ...config.module,
         rules: [

demo/stories/helpers/complexModel.ts

@@ -7,17 +7,6 @@ import { WorkspaceEngine } from '@projectstorm/react-workspaces-core';
 
 export const createComplexModel = (engine: WorkspaceEngine) => {
   let model = new RootWorkspaceModel(engine);
-  model.registerListener({
-    overConstrainedChanged: () => {
-      console.log(`overconstrained: ${model.r_overConstrained ? 'true' : 'false'}`);
-
-      // when we overconstrained, we can use the directive below to cause the children layouts on the root model
-      // to be recomputed (this method exists on all ExpandNodeModels )
-      if (model.r_overConstrained) {
-        // model.recomputeInitialSizes();
-      }
-    }
-  });
   model.setHorizontal(true);
 
   const trayFactory = engine.getFactory<WorkspaceTrayFactory>(WorkspaceTrayModel.NAME);

demo/stories/helpers/simpleModel.ts

@@ -1,11 +1,12 @@
 import { ExpandNodeModel } from '@projectstorm/react-workspaces-core';
 import { genVerticalNode } from './tools';
+import { DefaultWorkspacePanelModel } from '@projectstorm/react-workspaces-defaults';
 
 export const createSimpleModel = () => {
   let model = new ExpandNodeModel();
-  model.setHorizontal(true);
   model
-
+    .setHorizontal(true)
+    //
     //left panel
     .addModel(genVerticalNode())
     .addModel(genVerticalNode())

demo/stories/helpers/tools.tsx

@@ -6,6 +6,7 @@ import 'typeface-open-sans';
 import {
   DebugLayer,
   ExpandNodeModel,
+  overConstrainRecomputeBehavior,
   WorkspaceEngine,
   WorkspaceNodeFactory,
   WorkspaceNodeModel,
@@ -100,6 +101,10 @@ export const useEngine = (args: { DebugDividers?: boolean; DebugResizers?: boole
     e.registerFactory(workspaceNodeFactory);
     e.registerFactory(windowFactory);
 
+    overConstrainRecomputeBehavior({
+      engine: e
+    });
+
     draggingItemBehavior({
       engine: e,
       getDropZoneForModel: (model) => {

packages/core/src/entities/node/ExpandNodeModel.ts

@@ -1,9 +1,20 @@
-import { ResizeDivision, WorkspaceNodeModel, WorkspaceNodeModelSerialized } from './WorkspaceNodeModel';
+import {
+  ResizeDivision,
+  WorkspaceNodeModel,
+  WorkspaceNodeModelListener,
+  WorkspaceNodeModelSerialized
+} from './WorkspaceNodeModel';
 import { WorkspaceModel } from '../../core-models/WorkspaceModel';
 import * as _ from 'lodash';
 import { WorkspaceEngine } from '../../core/WorkspaceEngine';
 
-export interface ExpandNodeModelSerialized extends WorkspaceNodeModelSerialized {}
+export interface ExpandNodeModelSerialized extends WorkspaceNodeModelSerialized {
+  computed_initial?: boolean;
+}
+
+export interface ExpandNodeModelListener extends WorkspaceNodeModelListener {
+  recomputed?: () => any;
+}
 
 /**
  * This is a smarter version of the standard Node model which can work with
@@ -14,13 +25,16 @@ export interface ExpandNodeModelSerialized extends WorkspaceNodeModelSerialized
  * want to expand (expandHorizontal/Vertical == false)
  */
 export class ExpandNodeModel<
-  S extends ExpandNodeModelSerialized = ExpandNodeModelSerialized
-> extends WorkspaceNodeModel<S> {
+  S extends ExpandNodeModelSerialized = ExpandNodeModelSerialized,
+  L extends ExpandNodeModelListener = ExpandNodeModelListener
+> extends WorkspaceNodeModel<S, L> {
   busy: boolean;
+  computed_initial: boolean;
 
   constructor() {
     super();
     this.busy = false;
+    this.computed_initial = false;
   }
 
   addModel(model: WorkspaceModel, position: number = null): this {
@@ -29,9 +43,19 @@ export class ExpandNodeModel<
     return this;
   }
 
+  toArray(): S {
+    return {
+      ...super.toArray(),
+      computed_initial: this.computed_initial
+    };
+  }
+
   fromArray(payload: S, engine: WorkspaceEngine) {
-    // we disable re-computation since the panels should have their correct sizes
-    this.busy = true;
+    this.computed_initial = payload.computed_initial ?? false;
+    // we disable re-computation since the panels should have their correct sizes already
+    if (this.computed_initial) {
+      this.busy = true;
+    }
     super.fromArray(payload, engine);
     this.busy = false;
   }
@@ -41,10 +65,12 @@ export class ExpandNodeModel<
       return;
     }
     this.busy = true;
-
     let length = await this.r_dimensions.waitForSize().then((size) => (this.vertical ? size.height : size.width));
     const expand = this.getExpandNodes();
     if (expand.length <= 1) {
+      this.busy = false;
+      this.computed_initial = true;
+      this.iterateListeners((cb) => cb.recomputed?.());
       return;
     }
     length = this.vertical ? this.r_dimensions.size.height : this.r_dimensions.size.width;
@@ -72,6 +98,9 @@ export class ExpandNodeModel<
       }
     }
     this.busy = false;
+    this.computed_initial = true;
+
+    this.iterateListeners((cb) => cb.recomputed?.());
   }
 
   getResizeDivisions(): ResizeDivision[] {

packages/core/src/entities/node/ExpandNodeWidget.tsx

@@ -0,0 +1,34 @@
+import * as React from 'react';
+import { useEffect } from 'react';
+import styled from '@emotion/styled';
+import { WorkspaceNodeWidget } from './WorkspaceNodeWidget';
+import { WorkspaceEngine } from '../../core/WorkspaceEngine';
+import { WorkspaceNodeFactory } from './WorkspaceNodeFactory';
+import { ResizeDimensionContainer } from './ResizeDimensionContainer';
+import { ExpandNodeModel } from './ExpandNodeModel';
+import { useForceUpdate } from '../../widgets/hooks/useForceUpdate';
+
+export interface ExpandNodeWidgetProps {
+  engine: WorkspaceEngine;
+  factory: WorkspaceNodeFactory;
+  model: ExpandNodeModel;
+  generateDivider?: (divider: ResizeDimensionContainer) => React.JSX.Element;
+  className?: any;
+}
+
+export const ExpandNodeWidget: React.FC<ExpandNodeWidgetProps> = (props) => {
+  const forceUpdate = useForceUpdate();
+  useEffect(() => {
+    return props.model.registerListener({
+      recomputed: () => {
+        forceUpdate();
+      }
+    });
+  }, []);
+  return <S.WorkspaceNode {...props} computed_initial={props.model.computed_initial} />;
+};
+namespace S {
+  export const WorkspaceNode = styled(WorkspaceNodeWidget)<{ computed_initial: boolean }>`
+    opacity: ${(p) => (p.computed_initial ? 1 : 0)};
+  `;
+}

packages/core/src/entities/node/WorkspaceNodeFactory.tsx

@@ -5,6 +5,8 @@ import { WorkspaceModel } from '../../core-models/WorkspaceModel';
 import { SubComponentModelFactory, SubComponentRenderer } from '../SubComponentModelFactory';
 import { WorkspaceNodeWidget } from './WorkspaceNodeWidget';
 import { WorkspaceEngine } from '../../core/WorkspaceEngine';
+import { ExpandNodeModel } from './ExpandNodeModel';
+import { ExpandNodeWidget } from './ExpandNodeWidget';
 
 export interface RenderTitleBarEvent<T extends WorkspaceModel> {
   model: T;
@@ -23,7 +25,10 @@ export class WorkspaceNodeFactory<
     super(type);
   }
 
-  generateContent(event: WorkspaceModelFactoryEvent<T>): JSX.Element {
+  generateContent(event: WorkspaceModelFactoryEvent<T>): React.JSX.Element {
+    if (event.model instanceof ExpandNodeModel) {
+      return <ExpandNodeWidget model={event.model} engine={event.engine} factory={this} />;
+    }
     return <WorkspaceNodeWidget model={event.model} engine={event.engine} factory={this} />;
   }
 

packages/core/src/entities/node/WorkspaceNodeWidget.tsx

@@ -1,4 +1,5 @@
 import * as React from 'react';
+import { useEffect } from 'react';
 import styled from '@emotion/styled';
 import { WorkspaceEngine } from '../../core/WorkspaceEngine';
 import { WorkspaceNodeFactory, WorkspaceNodePanelRenderer } from './WorkspaceNodeFactory';
@@ -7,14 +8,13 @@ import { DraggableWidget } from '../../widgets/primitives/DraggableWidget';
 import { WorkspaceModel } from '../../core-models/WorkspaceModel';
 import { useModelElement } from '../../widgets/hooks/useModelElement';
 import { DirectionalLayoutWidget } from '../../widgets/layouts/DirectionalLayoutWidget';
-import { useEffect } from 'react';
 import { ResizeDimensionContainer } from './ResizeDimensionContainer';
 
 export interface WorkspaceNodeWidgetProps {
   engine: WorkspaceEngine;
   factory: WorkspaceNodeFactory;
   model: WorkspaceNodeModel;
-  generateDivider?: (divider: ResizeDimensionContainer) => JSX.Element;
+  generateDivider?: (divider: ResizeDimensionContainer) => React.JSX.Element;
   className?: any;
 }
 
@@ -24,16 +24,30 @@ export const WorkspaceNodeWidget: React.FC<WorkspaceNodeWidgetProps> = (props) =
     model: props.model
   });
   useEffect(() => {
-    return props.model.r_dimensions.registerListener({
+    const checkOverConstrain = () => {
+      if (props.model.vertical) {
+        props.model.setOverConstrained(ref.current.scrollHeight > props.model.r_dimensions.size.height);
+      } else {
+        props.model.setOverConstrained(ref.current.scrollWidth > props.model.r_dimensions.size.width);
+      }
+    };
+
+    let l1 = props.model.r_dimensions.registerListener({
       updated: () => {
-        if (props.model.vertical) {
-          props.model.setOverConstrained(ref.current.scrollHeight > props.model.r_dimensions.size.height);
-        } else {
-          props.model.setOverConstrained(ref.current.scrollWidth > props.model.r_dimensions.size.width);
-        }
+        checkOverConstrain();
       }
     });
-  }, []);
+    let l2 = props.model.registerListener({
+      dimensionsInvalidated: () => {
+        checkOverConstrain();
+      }
+    });
+
+    return () => {
+      l1();
+      l2();
+    };
+  }, [props.model]);
   return (
     <S.DirectionalLayout
       forwardRef={ref}

packages/core/src/entities/node/overConstrainRecomputeBehavior.ts

@@ -0,0 +1,37 @@
+import { ExpandNodeModel } from './ExpandNodeModel';
+import { WorkspaceEngine } from '../../core/WorkspaceEngine';
+
+export interface OverConstrainRecomputeBehaviorOptions {
+  engine: WorkspaceEngine;
+}
+
+export const overConstrainRecomputeBehavior = (options: OverConstrainRecomputeBehaviorOptions) => {
+  const { engine } = options;
+
+  let l1: () => any;
+  let l2 = engine.registerListener({
+    layoutInvalidated: () => {
+      l1?.();
+      let listeners = engine.rootModel
+        .flatten()
+        .filter((m) => m instanceof ExpandNodeModel)
+        .map((m: ExpandNodeModel) => {
+          return m.registerListener({
+            overConstrainedChanged: () => {
+              if (m.r_overConstrained) {
+                m.recomputeSizes();
+              }
+            }
+          });
+        });
+      l1 = () => {
+        listeners.forEach((l) => l());
+      };
+    }
+  });
+
+  return () => {
+    l1?.();
+    l2();
+  };
+};

packages/core/src/index.tsx

@@ -43,5 +43,8 @@ export * from './entities/node/WorkspaceNodeModel';
 export * from './entities/node/ExpandNodeModel';
 export * from './entities/node/WorkspaceNodeFactory';
 export * from './entities/node/WorkspaceNodeWidget';
+export * from './entities/node/ExpandNodeWidget';
+export * from './entities/node/overConstrainRecomputeBehavior';
+
 export * from './entities/SubComponentModelFactory';
 export * from './entities/SubComponentModelFactory';

packages/core/src/widgets/hooks/useBaseResizeObserver.tsx

@@ -34,9 +34,13 @@ export const useBaseResizeObserver = (props: UseBaseBaseResizeObserverProps) =>
   }, [props.dimension]);
 
   const updateDebounced = useCallback(
-    _.debounce(() => {
-      updateLogic();
-    }, 500),
+    _.debounce(
+      () => {
+        updateLogic();
+      },
+      500,
+      { leading: true }
+    ),
     [props.dimension]
   );
 
@@ -46,6 +50,7 @@ export const useBaseResizeObserver = (props: UseBaseBaseResizeObserverProps) =>
     } else {
       updateDebounced();
     }
+    updateLogic();
   }, [props.dimension, props.ignoreDebounce]);
 
   // listen to invalidate directives

packages/core/src/widgets/layouts/DirectionalLayoutWidget.tsx

@@ -30,6 +30,9 @@ namespace S {
 }
 
 export const DirectionalLayoutWidget: React.FC<DirectionalLayoutWidgetProps> = (props) => {
+  if (props.data.length === 0) {
+    return <S.Container ref={props.forwardRef} className={props.className} vertical={props.vertical}></S.Container>;
+  }
   const firstDivider = props.dimensionContainerForDivider(0);
   const generateDivider = useCallback((dimension: ResizeDimensionContainer) => {
     if (props.generateDivider) {