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90b3f75d82
Our files are up to a decade old, and have churned so much, that the initial author of the file no longer has much meaning. Furthermore, this will encourage developers to post to the developer group, rather than emailing Googlers (usually me) directly.
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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const eventUtils = goog.require('Blockly.Events.utils');
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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 {boolean} True if the paste was successful, false 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 false;
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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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eventUtils.setGroup(true);
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workspace.paste(copyData.saveInfo);
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eventUtils.setGroup(false);
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return true;
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}
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return false;
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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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* @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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toDuplicate.workspace.paste(copyData.saveInfo);
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copyData = oldCopyData;
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};
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exports.duplicate = duplicate;
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