MD Bookmarks: Extract bookmark editing into a <bookmark-edit-dialog> element

chrome/browser/resources/md_bookmarks/edit_dialog.js

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+Polymer({
+  is: 'bookmarks-edit-dialog',
+
+  properties: {
+    /** @private {BookmarkNode} */
+    editItem_: Object,
+
+    /** @private */
+    isFolder_: Boolean,
+
+    /** @private */
+    titleValue_: String,
+
+    /** @private */
+    urlValue_: String,
+  },
+
+  /** @param {BookmarkNode} editItem */
+  showEditDialog: function(editItem) {
+    this.editItem_ = editItem;
+    this.isFolder_ = !editItem.url;
+
+    this.titleValue_ = editItem.title;
+    if (!this.isFolder_)
+      this.urlValue_ = assert(editItem.url);
+
+    this.$.dialog.showModal();
+  },
+
+  /**
+   * @param {boolean} isFolder
+   * @return {string}
+   * @private
+   */
+  getDialogTitle_: function(isFolder) {
+    return loadTimeData.getString(
+        isFolder ? 'renameFolderTitle' : 'editBookmarkTitle');
+  },
+
+  /** @private */
+  onSaveButtonTap_: function() {
+    // TODO(tsergeant): Save changes when enter is pressed.
+    // TODO(tsergeant): Verify values.
+    var edit = {'title': this.titleValue_};
+    if (!this.isFolder_)
+      edit['url'] = this.urlValue_;
+
+    chrome.bookmarks.update(this.editItem_.id, edit);
+    this.$.dialog.close();
+  },
+
+  /** @private */
+  onCancelButtonTap_: function() {
+    this.$.dialog.cancel();
+  },
+});