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20f1475afc
* fix: change paste to return the pasted thing * fix: format * fix: build * fix: update the API for duplicate as well * fix: change types to ICopyable
81 lines
2.0 KiB
JavaScript
81 lines
2.0 KiB
JavaScript
/**
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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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* @fileoverview Blockly's internal clipboard for managing copy-paste.
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*/
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'use strict';
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/**
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* Blockly's internal clipboard for managing copy-paste.
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* @namespace Blockly.clipboard
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*/
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goog.module('Blockly.clipboard');
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/* eslint-disable-next-line no-unused-vars */
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const {ICopyable} = goog.requireType('Blockly.ICopyable');
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/**
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* Metadata about the object that is currently on the clipboard.
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* @type {?ICopyable.CopyData}
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*/
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let copyData = null;
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/**
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* Copy a block or workspace comment onto the local clipboard.
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* @param {!ICopyable} toCopy Block or Workspace Comment to be copied.
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* @alias Blockly.clipboard.copy
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* @package
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*/
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const copy = function(toCopy) {
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copyData = toCopy.toCopyData();
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};
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exports.copy = copy;
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/**
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* Paste a block or workspace comment on to the main workspace.
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* @return {!ICopyable|null} The pasted thing if the paste
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* was successful, null otherwise.
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* @alias Blockly.clipboard.paste
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* @package
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*/
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const paste = function() {
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if (!copyData) {
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return null;
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}
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// Pasting always pastes to the main workspace, even if the copy
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// started in a flyout workspace.
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let workspace = copyData.source;
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if (workspace.isFlyout) {
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workspace = workspace.targetWorkspace;
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}
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if (copyData.typeCounts &&
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workspace.isCapacityAvailable(copyData.typeCounts)) {
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return workspace.paste(copyData.saveInfo);
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}
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return null;
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};
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exports.paste = paste;
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/**
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* Duplicate this block and its children, or a workspace comment.
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* @param {!ICopyable} toDuplicate Block or Workspace Comment to be
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* duplicated.
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* @return {!ICopyable|null} The block or workspace comment that was duplicated,
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* or null if the duplication failed.
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* @alias Blockly.clipboard.duplicate
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* @package
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*/
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const duplicate = function(toDuplicate) {
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const oldCopyData = copyData;
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copy(toDuplicate);
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const pastedThing = toDuplicate.workspace.paste(copyData.saveInfo);
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copyData = oldCopyData;
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return pastedThing;
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};
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exports.duplicate = duplicate;
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