@handsontable/angular-wrapper
Version:
Best Data Grid for Angular with Spreadsheet Look and Feel.
180 lines • 23.6 kB
JavaScript
import Handsontable from 'handsontable/base';
import { createComponent, } from '@angular/core';
import { CustomEditorPlaceholderComponent } from './custom-editor-placeholder.component';
import { take } from 'rxjs/operators';
/**
* Adapter for BaseEditor from Handsontable.
*/
export class BaseEditorAdapter extends Handsontable.editors.BaseEditor {
/** Reference to the custom editor component. */
_componentRef;
/** Reference to the editor placeholder component. */
_editorPlaceHolderRef;
/** Flag indicating whether the placeholder is ready. */
_isPlaceholderReady = false;
/** Subscription for the finish edit event. */
_finishEditSubscription;
/** Subscription for the cancel edit event. */
_cancelEditSubscription;
/**
* Creates an instance of BaseEditorAdapter.
* @param instance The Handsontable instance.
*/
constructor(instance) {
super(instance);
this.hot.addHook('afterRowResize', this.onAfterRowResize.bind(this));
this.hot.addHook('afterColumnResize', this.onAfterColumnResize.bind(this));
this.hot.addHook('afterDestroy', this.onAfterDestroy.bind(this));
}
/**
* Prepares the editor for editing. Parameters are passed from Handsontable.
* @param row The row index.
* @param column The column index.
* @param prop The property name.
* @param TD The table cell element.
* @param originalValue The original value of the cell.
* @param cellProperties The cell properties.
*/
prepare(row, column, prop, TD, originalValue, cellProperties) {
if (!this.isOpened()) {
super.prepare(row, column, prop, TD, originalValue, cellProperties);
const columnMeta = this.hot.getColumnMeta(column);
if (!this._isPlaceholderReady) {
this.createEditorPlaceholder(columnMeta._environmentInjector);
this._isPlaceholderReady = true;
}
this._componentRef = columnMeta._editorComponentReference;
if (this._finishEditSubscription) {
this._finishEditSubscription.unsubscribe();
this._finishEditSubscription = undefined;
}
if (this._cancelEditSubscription) {
this._cancelEditSubscription.unsubscribe();
this._cancelEditSubscription = undefined;
}
this._finishEditSubscription = this._componentRef.instance.finishEdit
.pipe(take(1))
.subscribe(() => {
this.finishEditing();
});
this._cancelEditSubscription = this._componentRef.instance.cancelEdit
.pipe(take(1))
.subscribe(() => {
this.cancelChanges();
});
}
}
/**
* Closes the editor. This event is triggered by Handsontable.
*/
close() {
if (this.isOpened()) {
this.resetEditorState();
this._editorPlaceHolderRef.changeDetectorRef.detectChanges();
this._editorPlaceHolderRef.instance.detachEditor();
this._componentRef.instance.onClose();
}
}
/**
* Focuses the editor. This event is triggered by Handsontable.
*/
focus() {
this._componentRef.instance.onFocus();
}
/**
* Gets the value from the editor.
* @returns The value from the editor.
*/
getValue() {
return this._componentRef.instance?.getValue();
}
/**
* Opens the editor. This event is triggered by Handsontable.
* When opening, we set the shortcut context to 'editor'.
* This allows the built-in keyboard shortcuts to operate within the editor.
* @param event The event that triggered the opening of the editor.
* @remarks When entering edit mode using double-click, keyboard shortcuts do not work.
*/
open(event) {
this.hot.getShortcutManager().setActiveContextName('editor');
this.applyPropsToEditor();
this._componentRef.instance.onOpen(event);
}
/**
* Sets the value for the custom editor.
* @param newValue The value to set.
*/
setValue(newValue) {
this._componentRef.instance?.setValue(newValue);
this._componentRef.changeDetectorRef.detectChanges();
}
/**
* Applies properties to the custom editor and editor placeholder.
*/
applyPropsToEditor() {
const rect = this.getEditedCellRect();
if (!this.isInFullEditMode()) {
this._componentRef.instance.setValue(null);
}
this._componentRef.setInput('originalValue', this.originalValue);
this._componentRef.setInput('row', this.row);
this._componentRef.setInput('column', this.col);
this._componentRef.setInput('prop', this.prop);
this._componentRef.setInput('cellProperties', this.cellProperties);
this._editorPlaceHolderRef.setInput('top', rect.top);
this._editorPlaceHolderRef.setInput('left', rect.start);
this._editorPlaceHolderRef.setInput('height', rect.height);
this._editorPlaceHolderRef.setInput('width', rect.width);
this._editorPlaceHolderRef.setInput('isVisible', true);
this._editorPlaceHolderRef.setInput('componentRef', this._componentRef);
this._editorPlaceHolderRef.changeDetectorRef.detectChanges();
}
/**
* Creates the editor placeholder and append it to hot rootElement.
* @param injector The environment injector.
*/
createEditorPlaceholder(injector) {
this._editorPlaceHolderRef = createComponent(CustomEditorPlaceholderComponent, {
environmentInjector: injector,
});
this.hot.rootElement.appendChild(this._editorPlaceHolderRef.location.nativeElement);
}
/**
* Handles the after column resize event.
* Helps adjust the editor size to the column size and update its position.
*/
onAfterColumnResize() {
if (this.isOpened()) {
this.applyPropsToEditor();
}
}
/**
* Handles the after row resize event.
* Helps adjust the editor size to the column size and update its position.
*/
onAfterRowResize() {
if (this.isOpened()) {
this.applyPropsToEditor();
}
}
/**
* Handles the after destroy event.
*/
onAfterDestroy() {
this._editorPlaceHolderRef?.destroy();
}
/**
* Resets the editor placeholder state.
* We need to reset the editor placeholder state because we use it
* to store multiple references to the custom editor.
*/
resetEditorState() {
this._editorPlaceHolderRef.setInput('top', undefined);
this._editorPlaceHolderRef.setInput('left', undefined);
this._editorPlaceHolderRef.setInput('height', undefined);
this._editorPlaceHolderRef.setInput('width', undefined);
this._editorPlaceHolderRef.setInput('isVisible', false);
this._editorPlaceHolderRef.setInput('componentRef', undefined);
}
}
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Handsontable from 'handsontable/base';\nimport {\n  ComponentRef,\n  createComponent,\n  EnvironmentInjector,\n} from '@angular/core';\nimport { CustomEditorPlaceholderComponent } from './custom-editor-placeholder.component';\nimport { ColumnSettingsInternal } from '../models/column-settings';\nimport { HotCellEditorComponent } from './hot-cell-editor.component';\nimport { Subscription } from 'rxjs';\nimport { take } from 'rxjs/operators';\n\n/**\n * Adapter for BaseEditor from Handsontable.\n */\nexport class BaseEditorAdapter extends Handsontable.editors.BaseEditor {\n  /** Reference to the custom editor component. */\n  private _componentRef?: ComponentRef<HotCellEditorComponent<any>>;\n\n  /** Reference to the editor placeholder component. */\n  private _editorPlaceHolderRef: ComponentRef<CustomEditorPlaceholderComponent>;\n\n  /** Flag indicating whether the placeholder is ready. */\n  private _isPlaceholderReady = false;\n\n  /** Subscription for the finish edit event. */\n  private _finishEditSubscription?: Subscription;\n\n  /** Subscription for the cancel edit event. */\n  private _cancelEditSubscription?: Subscription;\n\n  /**\n   * Creates an instance of BaseEditorAdapter.\n   * @param instance The Handsontable instance.\n   */\n  constructor(instance: Handsontable.Core) {\n    super(instance);\n\n    this.hot.addHook('afterRowResize', this.onAfterRowResize.bind(this));\n    this.hot.addHook('afterColumnResize', this.onAfterColumnResize.bind(this));\n    this.hot.addHook('afterDestroy', this.onAfterDestroy.bind(this));\n  }\n\n  /**\n   * Prepares the editor for editing. Parameters are passed from Handsontable.\n   * @param row The row index.\n   * @param column The column index.\n   * @param prop The property name.\n   * @param TD The table cell element.\n   * @param originalValue The original value of the cell.\n   * @param cellProperties The cell properties.\n   */\n  override prepare(\n    row: number,\n    column: number,\n    prop: string | number,\n    TD: HTMLTableCellElement,\n    originalValue: any,\n    cellProperties: Handsontable.CellProperties\n  ): void {\n    if (!this.isOpened()) {\n      super.prepare(row, column, prop, TD, originalValue, cellProperties);\n      const columnMeta: ColumnSettingsInternal = this.hot.getColumnMeta(\n        column\n      ) as ColumnSettingsInternal;\n\n      if (!this._isPlaceholderReady) {\n        this.createEditorPlaceholder(columnMeta._environmentInjector);\n        this._isPlaceholderReady = true;\n      }\n\n      this._componentRef = columnMeta._editorComponentReference;\n\n      if (this._finishEditSubscription) {\n        this._finishEditSubscription.unsubscribe();\n        this._finishEditSubscription = undefined;\n      }\n\n      if (this._cancelEditSubscription) {\n        this._cancelEditSubscription.unsubscribe();\n        this._cancelEditSubscription = undefined;\n      }\n\n      this._finishEditSubscription = this._componentRef.instance.finishEdit\n        .pipe(take(1))\n        .subscribe(() => {\n          this.finishEditing();\n        });\n\n      this._cancelEditSubscription = this._componentRef.instance.cancelEdit\n        .pipe(take(1))\n        .subscribe(() => {\n          this.cancelChanges();\n        });\n    }\n  }\n\n  /**\n   * Closes the editor. This event is triggered by Handsontable.\n   */\n  close(): void {\n    if (this.isOpened()) {\n      this.resetEditorState();\n      this._editorPlaceHolderRef.changeDetectorRef.detectChanges();\n      this._editorPlaceHolderRef.instance.detachEditor();\n      this._componentRef.instance.onClose();\n    }\n  }\n\n  /**\n   * Focuses the editor. This event is triggered by Handsontable.\n   */\n  focus(): void {\n    this._componentRef.instance.onFocus();\n  }\n\n  /**\n   * Gets the value from the editor.\n   * @returns The value from the editor.\n   */\n  getValue(): any {\n    return this._componentRef.instance?.getValue();\n  }\n\n  /**\n   * Opens the editor. This event is triggered by Handsontable.\n   * When opening, we set the shortcut context to 'editor'.\n   * This allows the built-in keyboard shortcuts to operate within the editor.\n   * @param event The event that triggered the opening of the editor.\n   * @remarks When entering edit mode using double-click, keyboard shortcuts do not work.\n   */\n  open(event?: Event): void {\n    this.hot.getShortcutManager().setActiveContextName('editor');\n    this.applyPropsToEditor();\n    this._componentRef.instance.onOpen(event);\n  }\n\n  /**\n   * Sets the value for the custom editor.\n   * @param newValue The value to set.\n   */\n  setValue(newValue?: any): void {\n    this._componentRef.instance?.setValue(newValue);\n    this._componentRef.changeDetectorRef.detectChanges();\n  }\n\n  /**\n   * Applies properties to the custom editor and editor placeholder.\n   */\n  private applyPropsToEditor(): void {\n    const rect = this.getEditedCellRect();\n\n    if (!this.isInFullEditMode()) {\n      this._componentRef.instance.setValue(null);\n    }\n\n    this._componentRef.setInput('originalValue', this.originalValue);\n    this._componentRef.setInput('row', this.row);\n    this._componentRef.setInput('column', this.col);\n    this._componentRef.setInput('prop', this.prop);\n    this._componentRef.setInput('cellProperties', this.cellProperties);\n\n    this._editorPlaceHolderRef.setInput('top', rect.top);\n    this._editorPlaceHolderRef.setInput('left', rect.start);\n    this._editorPlaceHolderRef.setInput('height', rect.height);\n    this._editorPlaceHolderRef.setInput('width', rect.width);\n    this._editorPlaceHolderRef.setInput('isVisible', true);\n    this._editorPlaceHolderRef.setInput('componentRef', this._componentRef);\n    this._editorPlaceHolderRef.changeDetectorRef.detectChanges();\n  }\n\n  /**\n   * Creates the editor placeholder and append it to hot rootElement.\n   * @param injector The environment injector.\n   */\n  private createEditorPlaceholder(injector: EnvironmentInjector): void {\n    this._editorPlaceHolderRef = createComponent(\n      CustomEditorPlaceholderComponent,\n      {\n        environmentInjector: injector as EnvironmentInjector,\n      }\n    );\n\n    this.hot.rootElement.appendChild(\n      this._editorPlaceHolderRef.location.nativeElement\n    );\n  }\n\n  /**\n   * Handles the after column resize event.\n   * Helps adjust the editor size to the column size and update its position.\n   */\n  private onAfterColumnResize(): void {\n    if (this.isOpened()) {\n      this.applyPropsToEditor();\n    }\n  }\n\n  /**\n   * Handles the after row resize event.\n   * Helps adjust the editor size to the column size and update its position.\n   */\n  private onAfterRowResize(): void {\n    if (this.isOpened()) {\n      this.applyPropsToEditor();\n    }\n  }\n\n  /**\n   * Handles the after destroy event.\n   */\n  private onAfterDestroy(): void {\n    this._editorPlaceHolderRef?.destroy();\n  }\n\n  /**\n   * Resets the editor placeholder state.\n   * We need to reset the editor placeholder state because we use it\n   * to store multiple references to the custom editor.\n   */\n  private resetEditorState(): void {\n    this._editorPlaceHolderRef.setInput('top', undefined);\n    this._editorPlaceHolderRef.setInput('left', undefined);\n    this._editorPlaceHolderRef.setInput('height', undefined);\n    this._editorPlaceHolderRef.setInput('width', undefined);\n    this._editorPlaceHolderRef.setInput('isVisible', false);\n    this._editorPlaceHolderRef.setInput('componentRef', undefined);\n  }\n}\n"]}