Extract Editor from App

src/App.scss

@@ -1,24 +1,6 @@
 html,
 body,
-#root,
-svg {
-  height: 100%;
+#root {
   width: 100%;
-}
-
-text {
-  font-size: 18px;
-  font-weight: 800;
-  fill: none;
-  fill-opacity: 0;
-  stroke: #000000;
-  stroke-width: 1px;
-  stroke-linecap: butt;
-  stroke-linejoin: miter;
-  stroke-opacity: 1;
-}
-
-@keyframes fadein {
-    from { opacity: 0; }
-    to { opacity: 1; }
+  height: 100%;
 }

src/App.tsx

@@ -1,16 +1,8 @@
-import React from 'react';
-import './App.scss';
-import Sidebar from './Components/Sidebar/Sidebar';
-import { ElementsSidebar } from './Components/ElementsSidebar/ElementsSidebar';
+import * as React from 'react';
+import { ContainerModel, IContainerModel } from './Components/SVG/Elements/ContainerModel';
+import Editor from './Editor';
 import { AvailableContainer } from './Interfaces/AvailableContainer';
 import { Configuration } from './Interfaces/Configuration';
-import { SVG } from './Components/SVG/SVG';
-import { History } from './Components/History/History';
-import { ContainerModel, IContainerModel, MakeIterator } from './Components/SVG/Elements/ContainerModel';
-import Properties from './Interfaces/Properties';
-
-interface IAppProps {
-}
 
 export interface IHistoryState {
   MainContainer: IContainerModel | null,
@@ -18,24 +10,35 @@ export interface IHistoryState {
   TypeCounters: Record<string, number>
 }
 
-interface IAppState {
-  isSidebarOpen: boolean,
-  isSVGSidebarOpen: boolean,
-  isHistoryOpen: boolean,
-  configuration: Configuration,
-  history: Array<IHistoryState>,
-  historyCurrentStep: 0
+interface IAppProps {
 }
 
-class App extends React.Component<IAppProps> {
+interface IAppState {
+  configuration: Configuration,
+  history: IHistoryState[],
+  historyCurrentStep: number,
+  isLoaded: boolean
+}
+
+export class App extends React.Component<IAppProps> {
   public state: IAppState;
 
-  constructor(props: IAppProps) {
+  public constructor(props: IAppProps) {
     super(props);
+
+    const MainContainer = new ContainerModel(
+      null,
+      {
+        id: 'main',
+        x: 0,
+        y: 0,
+        width: 1000,
+        height: 1000,
+        fillOpacity: 0,
+        stroke: 'black'
+      }
+    );
     this.state = {
-      isSidebarOpen: true,
-      isSVGSidebarOpen: false,
-      isHistoryOpen: false,
       configuration: {
         AvailableContainers: [],
         AvailableSymbols: [],
@@ -43,18 +46,16 @@ class App extends React.Component<IAppProps> {
       },
       history: [
         {
-          MainContainer: null,
-          SelectedContainer: null,
+          MainContainer,
+          SelectedContainer: MainContainer,
           TypeCounters: {}
         }
       ],
-      historyCurrentStep: 0
-    } as IAppState;
+      historyCurrentStep: 0,
+      isLoaded: false
+    };
   }
 
-  public getCurrentHistory = (): IHistoryState[] => this.state.history.slice(0, this.state.historyCurrentStep + 1);
-  public getCurrentHistoryState = (): IHistoryState => this.state.history[this.state.historyCurrentStep];
-
   componentDidMount() {
     // Fetch the configuration from the API
     fetchConfiguration().then((configuration: Configuration) => {
@@ -72,280 +73,37 @@ class App extends React.Component<IAppProps> {
         }
       );
 
-      const history = this.getCurrentHistory();
-      const current = history[history.length - 1];
-
       // Save the configuration and the new MainContainer
       // and default the selected container to it
-      this.setState(prevState => ({
-        ...prevState,
+      this.setState({
         configuration,
-        history: history.concat(
+        history:
           [
             {
               MainContainer,
               SelectedContainer: MainContainer,
-              TypeCounters: current.TypeCounters
+              TypeCounters: {}
             }
-          ]
-        ),
-        historyCurrentStep: history.length
-      } as IAppState));
+          ],
+        historyCurrentStep: 0,
+        isLoaded: true
+      } as IAppState);
     });
   }
 
-  /**
-   * Toggle the components sidebar
-   */
-  public ToggleSidebar() {
-    this.setState({
-      isSidebarOpen: !this.state.isSidebarOpen
-    } as IAppState);
-  }
-
-  /**
-   * Toggle the elements
-   */
-  public ToggleElementsSidebar() {
-    this.setState({
-      isSVGSidebarOpen: !this.state.isSVGSidebarOpen
-    } as IAppState);
-  }
-
-  /**
-   * Toggle the elements
-   */
-  public ToggleHistory() {
-    this.setState({
-      isHistoryOpen: !this.state.isHistoryOpen
-    } as IAppState);
-  }
-
-  /**
-   * Select a container
-   * @param container Selected container
-   */
-  public SelectContainer(container: ContainerModel) {
-    const history = this.getCurrentHistory();
-    const current = history[history.length - 1];
-    this.setState({
-      history: history.concat([{
-        MainContainer: current.MainContainer,
-        TypeCounters: current.TypeCounters,
-        SelectedContainer: container
-      }]),
-      historyCurrentStep: history.length
-    } as IAppState);
-  }
-
-  /**
-   * Handled the property change event in the properties form
-   * @param key Property name
-   * @param value New value of the property
-   * @returns void
-   */
-  public OnPropertyChange(key: string, value: string | number): void {
-    const history = this.getCurrentHistory();
-    const current = history[history.length - 1];
-
-    if (current.SelectedContainer === null ||
-      current.SelectedContainer === undefined) {
-      throw new Error('[OnPropertyChange] Property was changed before selecting a Container');
-    }
-
-    if (current.MainContainer === null ||
-      current.MainContainer === undefined) {
-      throw new Error('[OnPropertyChange] Property was changed before the main container was added');
-    }
-
-    if (parent === null) {
-      const clone: IContainerModel = structuredClone(current.SelectedContainer);
-      (clone.properties as any)[key] = value;
-      this.setState({
-        history: history.concat([{
-          SelectedContainer: clone,
-          MainContainer: clone,
-          TypeCounters: current.TypeCounters
-        }]),
-        historyCurrentStep: history.length
-      } as IAppState);
-      return;
-    }
-
-    const clone: IContainerModel = structuredClone(current.MainContainer);
-    const it = MakeIterator(clone);
-    let container: ContainerModel | null = null;
-    for (const child of it) {
-      if (child.properties.id === current.SelectedContainer.properties.id) {
-        container = child as ContainerModel;
-        break;
-      }
-    }
-
-    if (container === null) {
-      throw new Error('[OnPropertyChange] Container model was not found among children of the main container!');
-    }
-
-    (container.properties as any)[key] = value;
-
-    this.setState(
-      {
-        history: history.concat([{
-          SelectedContainer: container,
-          MainContainer: clone,
-          TypeCounters: current.TypeCounters
-        }]),
-        historyCurrentStep: history.length
-      } as IAppState);
-  }
-
-  /**
-   * Add a new container to a selected container
-   * @param type The type of container
-   * @returns void
-   */
-  public AddContainer(type: string): void {
-    const history = this.getCurrentHistory();
-    const current = history[history.length - 1];
-
-    if (current.SelectedContainer === null ||
-      current.SelectedContainer === undefined) {
-      return;
-    }
-
-    if (current.MainContainer === null ||
-      current.MainContainer === undefined) {
-      return;
-    }
-
-    // Get the preset properties from the API
-    const properties = this.state.configuration.AvailableContainers.find(option => option.Type === type);
-
-    if (properties === undefined) {
-      throw new Error(`[AddContainer] Object type not found. Found: ${type}`);
-    }
-
-    // Set the counter of the object type in order to assign an unique id
-    const newCounters = Object.assign({}, current.TypeCounters);
-    if (newCounters[type] === null ||
-      newCounters[type] === undefined) {
-      newCounters[type] = 0;
-    } else {
-      newCounters[type]++;
-    }
-    const count = newCounters[type];
-
-    // Create maincontainer model
-    const structure: IContainerModel = structuredClone(current.MainContainer);
-    const clone = Object.assign(new ContainerModel(null, {} as Properties), structure);
-
-    // Find the parent
-    const it = MakeIterator(clone);
-    let parent: ContainerModel | null = null;
-    for (const child of it) {
-      if (child.properties.id === current.SelectedContainer.properties.id) {
-        parent = child as ContainerModel;
-        break;
-      }
-    }
-
-    if (parent === null) {
-      throw new Error('[OnPropertyChange] Container model was not found among children of the main container!');
-    }
-
-    // Create the container
-    const newContainer = new ContainerModel(
-      parent,
-      {
-        id: `${type}-${count}`,
-        x: 0,
-        y: 0,
-        width: properties?.Width,
-        height: parent.properties.height,
-        ...properties.Style
-      } as Properties,
-      [],
-      {
-        type
-      }
-    );
-
-    // And push it the the parent children
-    parent.children.push(newContainer);
-
-    // Update the state
-    this.setState({
-      history: history.concat([{
-        MainContainer: clone,
-        TypeCounters: newCounters,
-        SelectedContainer: parent
-      }]),
-      historyCurrentStep: history.length
-    } as IAppState);
-  }
-
-  public jumpTo(move: number): void {
-    this.setState({
-      historyCurrentStep: move
-    } as IAppState);
-  }
-
-  /**
-   * Render the application
-   * @returns {JSX.Element} Rendered JSX element
-   */
-  render() {
-    const current = this.getCurrentHistoryState();
+  public render() {
+    if (this.state.isLoaded) {
       return (
-      <div className="App font-sans h-full">
-        <Sidebar
-          componentOptions={this.state.configuration.AvailableContainers}
-          isOpen={this.state.isSidebarOpen}
-          onClick={() => this.ToggleSidebar()}
-          buttonOnClick={(type: string) => this.AddContainer(type)}
-        />
-        <button
-          className='fixed z-10 top-4 left-4 text-lg bg-blue-200 hover:bg-blue-300 transition-all drop-shadow-md hover:drop-shadow-lg py-2 px-3 rounded-lg'
-          onClick={() => this.ToggleSidebar()}
-        >
-          &#9776; Components
-        </button>
-
-        <ElementsSidebar
-          MainContainer={current.MainContainer}
-          SelectedContainer={current.SelectedContainer}
-          isOpen={this.state.isSVGSidebarOpen}
-          isHistoryOpen={this.state.isHistoryOpen}
-          onClick={() => this.ToggleElementsSidebar()}
-          onPropertyChange={(key: string, value: string) => this.OnPropertyChange(key, value)}
-          selectContainer={(container: ContainerModel) => this.SelectContainer(container)}
-        />
-        <button
-          className='fixed z-10 top-4 right-12 text-lg bg-slate-200 hover:bg-slate-300 transition-all drop-shadow-md hover:drop-shadow-lg py-2 px-3 rounded-lg'
-          onClick={() => this.ToggleElementsSidebar()}
-        >
-          &#9776; Elements
-        </button>
-
-        <History
+        <div>
+          <Editor
+            configuration={this.state.configuration}
             history={this.state.history}
             historyCurrentStep={this.state.historyCurrentStep}
-          isOpen={this.state.isHistoryOpen}
-          onClick={() => this.ToggleHistory()}
-          jumpTo={(move) => { this.jumpTo(move); }}
           />
-        <button
-          className='fixed z-10 top-4 right-72 text-lg bg-slate-200 hover:bg-slate-300 transition-all drop-shadow-md hover:drop-shadow-lg py-2 px-3 rounded-lg'
-          onClick={() => this.ToggleHistory()}>
-            &#9776; History
-        </button>
-
-        <SVG selected={current.SelectedContainer}>
-          { current.MainContainer }
-        </SVG>
         </div>
       );
     }
+  }
 }
 
 /**
@@ -377,5 +135,3 @@ export async function fetchConfiguration(): Promise<Configuration> {
     xhr.send();
   });
 }
-
-export default App;

src/Editor.scss

@@ -0,0 +1,22 @@
+
+svg {
+  height: 100%;
+  width: 100%;
+}
+
+text {
+  font-size: 18px;
+  font-weight: 800;
+  fill: none;
+  fill-opacity: 0;
+  stroke: #000000;
+  stroke-width: 1px;
+  stroke-linecap: butt;
+  stroke-linejoin: miter;
+  stroke-opacity: 1;
+}
+
+@keyframes fadein {
+    from { opacity: 0; }
+    to { opacity: 1; }
+}

src/Editor.tsx

@@ -0,0 +1,299 @@
+import React from 'react';
+import './Editor.scss';
+import Sidebar from './Components/Sidebar/Sidebar';
+import { ElementsSidebar } from './Components/ElementsSidebar/ElementsSidebar';
+import { AvailableContainer } from './Interfaces/AvailableContainer';
+import { Configuration } from './Interfaces/Configuration';
+import { SVG } from './Components/SVG/SVG';
+import { History } from './Components/History/History';
+import { ContainerModel, IContainerModel, MakeIterator } from './Components/SVG/Elements/ContainerModel';
+import Properties from './Interfaces/Properties';
+import { IHistoryState } from './App';
+
+interface IEditorProps {
+  configuration: Configuration,
+  history: Array<IHistoryState>,
+  historyCurrentStep: number
+}
+
+interface IEditorState {
+  isSidebarOpen: boolean,
+  isSVGSidebarOpen: boolean,
+  isHistoryOpen: boolean,
+  history: Array<IHistoryState>,
+  historyCurrentStep: number,
+}
+
+class Editor extends React.Component<IEditorProps> {
+  public state: IEditorState;
+
+  constructor(props: IEditorProps) {
+    super(props);
+    this.state = {
+      isSidebarOpen: true,
+      isSVGSidebarOpen: false,
+      isHistoryOpen: false,
+      configuration: props.configuration,
+      history: props.history,
+      historyCurrentStep: props.historyCurrentStep
+    } as IEditorState;
+  }
+
+  public getCurrentHistory = (): IHistoryState[] => this.state.history.slice(0, this.state.historyCurrentStep + 1);
+  public getCurrentHistoryState = (): IHistoryState => this.state.history[this.state.historyCurrentStep];
+
+  /**
+   * Toggle the components sidebar
+   */
+  public ToggleSidebar() {
+    this.setState({
+      isSidebarOpen: !this.state.isSidebarOpen
+    } as IEditorState);
+  }
+
+  /**
+   * Toggle the elements
+   */
+  public ToggleElementsSidebar() {
+    this.setState({
+      isSVGSidebarOpen: !this.state.isSVGSidebarOpen
+    } as IEditorState);
+  }
+
+  /**
+   * Toggle the elements
+   */
+  public ToggleHistory() {
+    this.setState({
+      isHistoryOpen: !this.state.isHistoryOpen
+    } as IEditorState);
+  }
+
+  /**
+   * Select a container
+   * @param container Selected container
+   */
+  public SelectContainer(container: ContainerModel) {
+    const history = this.getCurrentHistory();
+    const current = history[history.length - 1];
+    this.setState({
+      history: history.concat([{
+        MainContainer: current.MainContainer,
+        TypeCounters: current.TypeCounters,
+        SelectedContainer: container
+      }]),
+      historyCurrentStep: history.length
+    } as IEditorState);
+  }
+
+  /**
+   * Handled the property change event in the properties form
+   * @param key Property name
+   * @param value New value of the property
+   * @returns void
+   */
+  public OnPropertyChange(key: string, value: string | number): void {
+    const history = this.getCurrentHistory();
+    const current = history[history.length - 1];
+
+    if (current.SelectedContainer === null ||
+      current.SelectedContainer === undefined) {
+      throw new Error('[OnPropertyChange] Property was changed before selecting a Container');
+    }
+
+    if (current.MainContainer === null ||
+      current.MainContainer === undefined) {
+      throw new Error('[OnPropertyChange] Property was changed before the main container was added');
+    }
+
+    if (parent === null) {
+      const clone: IContainerModel = structuredClone(current.SelectedContainer);
+      (clone.properties as any)[key] = value;
+      this.setState({
+        history: history.concat([{
+          SelectedContainer: clone,
+          MainContainer: clone,
+          TypeCounters: current.TypeCounters
+        }]),
+        historyCurrentStep: history.length
+      } as IEditorState);
+      return;
+    }
+
+    const clone: IContainerModel = structuredClone(current.MainContainer);
+    const it = MakeIterator(clone);
+    let container: ContainerModel | null = null;
+    for (const child of it) {
+      if (child.properties.id === current.SelectedContainer.properties.id) {
+        container = child as ContainerModel;
+        break;
+      }
+    }
+
+    if (container === null) {
+      throw new Error('[OnPropertyChange] Container model was not found among children of the main container!');
+    }
+
+    (container.properties as any)[key] = value;
+
+    this.setState(
+      {
+        history: history.concat([{
+          SelectedContainer: container,
+          MainContainer: clone,
+          TypeCounters: current.TypeCounters
+        }]),
+        historyCurrentStep: history.length
+      } as IEditorState);
+  }
+
+  /**
+   * Add a new container to a selected container
+   * @param type The type of container
+   * @returns void
+   */
+  public AddContainer(type: string): void {
+    const history = this.getCurrentHistory();
+    const current = history[history.length - 1];
+
+    if (current.SelectedContainer === null ||
+      current.SelectedContainer === undefined) {
+      return;
+    }
+
+    if (current.MainContainer === null ||
+      current.MainContainer === undefined) {
+      return;
+    }
+
+    // Get the preset properties from the API
+    const properties = this.props.configuration.AvailableContainers.find(option => option.Type === type);
+
+    if (properties === undefined) {
+      throw new Error(`[AddContainer] Object type not found. Found: ${type}`);
+    }
+
+    // Set the counter of the object type in order to assign an unique id
+    const newCounters = Object.assign({}, current.TypeCounters);
+    if (newCounters[type] === null ||
+      newCounters[type] === undefined) {
+      newCounters[type] = 0;
+    } else {
+      newCounters[type]++;
+    }
+    const count = newCounters[type];
+
+    // Create maincontainer model
+    const structure: IContainerModel = structuredClone(current.MainContainer);
+    const clone = Object.assign(new ContainerModel(null, {} as Properties), structure);
+
+    // Find the parent
+    const it = MakeIterator(clone);
+    let parent: ContainerModel | null = null;
+    for (const child of it) {
+      if (child.properties.id === current.SelectedContainer.properties.id) {
+        parent = child as ContainerModel;
+        break;
+      }
+    }
+
+    if (parent === null) {
+      throw new Error('[OnPropertyChange] Container model was not found among children of the main container!');
+    }
+
+    // Create the container
+    const newContainer = new ContainerModel(
+      parent,
+      {
+        id: `${type}-${count}`,
+        x: 0,
+        y: 0,
+        width: properties?.Width,
+        height: parent.properties.height,
+        ...properties.Style
+      } as Properties,
+      [],
+      {
+        type
+      }
+    );
+
+    // And push it the the parent children
+    parent.children.push(newContainer);
+
+    // Update the state
+    this.setState({
+      history: history.concat([{
+        MainContainer: clone,
+        TypeCounters: newCounters,
+        SelectedContainer: parent
+      }]),
+      historyCurrentStep: history.length
+    } as IEditorState);
+  }
+
+  public jumpTo(move: number): void {
+    this.setState({
+      historyCurrentStep: move
+    } as IEditorState);
+  }
+
+  /**
+   * Render the application
+   * @returns {JSX.Element} Rendered JSX element
+   */
+  render() {
+    const current = this.getCurrentHistoryState();
+    return (
+      <div className="App font-sans h-full">
+        <Sidebar
+          componentOptions={this.props.configuration.AvailableContainers}
+          isOpen={this.state.isSidebarOpen}
+          onClick={() => this.ToggleSidebar()}
+          buttonOnClick={(type: string) => this.AddContainer(type)}
+        />
+        <button
+          className='fixed z-10 top-4 left-4 text-lg bg-blue-200 hover:bg-blue-300 transition-all drop-shadow-md hover:drop-shadow-lg py-2 px-3 rounded-lg'
+          onClick={() => this.ToggleSidebar()}
+        >
+          &#9776; Components
+        </button>
+
+        <ElementsSidebar
+          MainContainer={current.MainContainer}
+          SelectedContainer={current.SelectedContainer}
+          isOpen={this.state.isSVGSidebarOpen}
+          isHistoryOpen={this.state.isHistoryOpen}
+          onClick={() => this.ToggleElementsSidebar()}
+          onPropertyChange={(key: string, value: string) => this.OnPropertyChange(key, value)}
+          selectContainer={(container: ContainerModel) => this.SelectContainer(container)}
+        />
+        <button
+          className='fixed z-10 top-4 right-12 text-lg bg-slate-200 hover:bg-slate-300 transition-all drop-shadow-md hover:drop-shadow-lg py-2 px-3 rounded-lg'
+          onClick={() => this.ToggleElementsSidebar()}
+        >
+          &#9776; Elements
+        </button>
+
+        <History
+          history={this.state.history}
+          historyCurrentStep={this.state.historyCurrentStep}
+          isOpen={this.state.isHistoryOpen}
+          onClick={() => this.ToggleHistory()}
+          jumpTo={(move) => { this.jumpTo(move); }}
+        />
+        <button
+          className='fixed z-10 top-4 right-72 text-lg bg-slate-200 hover:bg-slate-300 transition-all drop-shadow-md hover:drop-shadow-lg py-2 px-3 rounded-lg'
+          onClick={() => this.ToggleHistory()}>
+            &#9776; History
+        </button>
+
+        <SVG selected={current.SelectedContainer}>
+          { current.MainContainer }
+        </SVG>
+      </div>
+    );
+  }
+}
+
+export default Editor;

src/main.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import ReactDOM from 'react-dom/client';
-import App from './App';
+import { App } from './App';
 import './index.scss';
 
 ReactDOM.createRoot(document.getElementById('root') as HTMLElement).render(