chore: rename all JS files to TS files (#6297)

core/clipboard.ts

@@ -0,0 +1,80 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @fileoverview Blockly's internal clipboard for managing copy-paste.
+ */
+'use strict';
+
+/**
+ * Blockly's internal clipboard for managing copy-paste.
+ * @namespace Blockly.clipboard
+ */
+goog.module('Blockly.clipboard');
+
+/* eslint-disable-next-line no-unused-vars */
+const {ICopyable} = goog.requireType('Blockly.ICopyable');
+
+
+/**
+ * Metadata about the object that is currently on the clipboard.
+ * @type {?ICopyable.CopyData}
+ */
+let copyData = null;
+
+/**
+ * Copy a block or workspace comment onto the local clipboard.
+ * @param {!ICopyable} toCopy Block or Workspace Comment to be copied.
+ * @alias Blockly.clipboard.copy
+ * @package
+ */
+const copy = function(toCopy) {
+  copyData = toCopy.toCopyData();
+};
+exports.copy = copy;
+
+/**
+ * Paste a block or workspace comment on to the main workspace.
+ * @return {!ICopyable|null} The pasted thing if the paste
+ *     was successful, null otherwise.
+ * @alias Blockly.clipboard.paste
+ * @package
+ */
+const paste = function() {
+  if (!copyData) {
+    return null;
+  }
+  // Pasting always pastes to the main workspace, even if the copy
+  // started in a flyout workspace.
+  let workspace = copyData.source;
+  if (workspace.isFlyout) {
+    workspace = workspace.targetWorkspace;
+  }
+  if (copyData.typeCounts &&
+      workspace.isCapacityAvailable(copyData.typeCounts)) {
+    return workspace.paste(copyData.saveInfo);
+  }
+  return null;
+};
+exports.paste = paste;
+
+/**
+ * Duplicate this block and its children, or a workspace comment.
+ * @param {!ICopyable} toDuplicate Block or Workspace Comment to be
+ *     duplicated.
+ * @return {!ICopyable|null} The block or workspace comment that was duplicated,
+ *     or null if the duplication failed.
+ * @alias Blockly.clipboard.duplicate
+ * @package
+ */
+const duplicate = function(toDuplicate) {
+  const oldCopyData = copyData;
+  copy(toDuplicate);
+  const pastedThing = toDuplicate.toCopyData().source.paste(copyData.saveInfo);
+  copyData = oldCopyData;
+  return pastedThing;
+};
+exports.duplicate = duplicate;