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b0a7c004a9
* fix(build): Restore erroneously-deleted filter function This was deleted in PR #7406 as it was mainly being used to filter core/ vs. test/mocha/ deps into separate deps files - but it turns out also to be used for filtering error messages too. Oops. * refactor(tests): Migrate advanced compilation test to ES Modules * refactor(build): Migrate main.js to TypeScript This turns out to be pretty straight forward, even if it would cause crashing if one actually tried to import this module instead of just feeding it to Closure Compiler. * chore(build): Remove goog.declareModuleId calls Replace goog.declareModuleId calls with a comment recording the former module ID for posterity (or at least until we decide how to reformat the renamings file. * chore(tests): Delete closure/goog/* For the moment we still need something to serve as base.js for the benefit of closure-make-deps, so we keep a vestigial base.js around, containing only the @provideGoog declaration. * refactor(build): Remove vestigial base.js By changing slightly the command line arguments to closure-make-deps and closure-calculate-chunks the need to have any base.js is eliminated. * chore: Typo fix for PR #7415
78 lines
2.3 KiB
TypeScript
78 lines
2.3 KiB
TypeScript
/**
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* @license
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* Copyright 2021 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* The abstract class for a component that can delete a block or
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* bubble that is dropped on top of it.
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*
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* @class
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*/
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// Former goog.module ID: Blockly.DeleteArea
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import {BlockSvg} from './block_svg.js';
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import {DragTarget} from './drag_target.js';
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import type {IDeleteArea} from './interfaces/i_delete_area.js';
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import type {IDraggable} from './interfaces/i_draggable.js';
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/**
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* Abstract class for a component that can delete a block or bubble that is
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* dropped on top of it.
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*/
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export class DeleteArea extends DragTarget implements IDeleteArea {
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/**
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* Whether the last block or bubble dragged over this delete area would be
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* deleted if dropped on this component.
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* This property is not updated after the block or bubble is deleted.
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*/
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protected wouldDelete_ = false;
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/**
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* The unique id for this component that is used to register with the
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* ComponentManager.
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*/
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// TODO(b/109816955): remove '!', see go/strict-prop-init-fix.
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override id!: string;
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/**
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* Constructor for DeleteArea. Should not be called directly, only by a
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* subclass.
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*/
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constructor() {
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super();
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}
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/**
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* Returns whether the provided block or bubble would be deleted if dropped on
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* this area.
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* This method should check if the element is deletable and is always called
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* before onDragEnter/onDragOver/onDragExit.
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*
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* @param element The block or bubble currently being dragged.
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* @param couldConnect Whether the element could could connect to another.
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* @returns Whether the element provided would be deleted if dropped on this
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* area.
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*/
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wouldDelete(element: IDraggable, couldConnect: boolean): boolean {
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if (element instanceof BlockSvg) {
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const block = element;
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const couldDeleteBlock = !block.getParent() && block.isDeletable();
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this.updateWouldDelete_(couldDeleteBlock && !couldConnect);
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} else {
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this.updateWouldDelete_(element.isDeletable());
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}
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return this.wouldDelete_;
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}
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/**
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* Updates the internal wouldDelete_ state.
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*
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* @param wouldDelete The new value for the wouldDelete state.
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*/
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protected updateWouldDelete_(wouldDelete: boolean) {
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this.wouldDelete_ = wouldDelete;
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}
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}
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