9e54b7d4a9
Editable content now shows an alert when it reloads with content cached in gr-storage. Bug: Issue 6309 Change-Id: Id38b7eddf26e223a2899a0ffb1b3fa72398da0f0
125 lines
3.3 KiB
JavaScript
125 lines
3.3 KiB
JavaScript
// Copyright (C) 2016 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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(function() {
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'use strict';
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const RESTORED_MESSAGE = 'Content restored from a previous edit.';
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const STORAGE_DEBOUNCE_INTERVAL_MS = 400;
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Polymer({
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is: 'gr-editable-content',
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/**
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* Fired when the save button is pressed.
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*
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* @event editable-content-save
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*/
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/**
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* Fired when the cancel button is pressed.
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*
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* @event editable-content-cancel
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*/
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/**
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* Fired when content is restored from storage.
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*
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* @event show-alert
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*/
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properties: {
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content: {
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notify: true,
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type: String,
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},
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disabled: {
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reflectToAttribute: true,
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type: Boolean,
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value: false,
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},
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editing: {
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observer: '_editingChanged',
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type: Boolean,
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value: false,
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},
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removeZeroWidthSpace: Boolean,
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// If no storage key is provided, content is not stored.
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storageKey: String,
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_saveDisabled: {
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computed: '_computeSaveDisabled(disabled, content, _newContent)',
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type: Boolean,
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value: true,
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},
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_newContent: {
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type: String,
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observer: '_newContentChanged',
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},
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},
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focusTextarea() {
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this.$$('iron-autogrow-textarea').textarea.focus();
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},
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_newContentChanged(newContent, oldContent) {
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if (!this.storageKey) { return; }
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this.debounce('store', () => {
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if (newContent.length) {
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this.$.storage.setEditableContentItem(this.storageKey, newContent);
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} else {
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this.$.storage.eraseEditableContentItem(this.storageKey);
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}
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}, STORAGE_DEBOUNCE_INTERVAL_MS);
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},
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_editingChanged(editing) {
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if (!editing) { return; }
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let content;
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if (this.storageKey) {
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const storedContent =
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this.$.storage.getEditableContentItem(this.storageKey);
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if (storedContent && storedContent.message) {
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content = storedContent.message;
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this.dispatchEvent(new CustomEvent('show-alert',
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{detail: {message: RESTORED_MESSAGE}, bubbles: true}));
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}
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}
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if (!content) {
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content = this.content || '';
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}
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// TODO(wyatta) switch linkify sequence, see issue 5526.
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this._newContent = this.removeZeroWidthSpace ?
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content.replace(/^R=\u200B/gm, 'R=') :
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content;
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},
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_computeSaveDisabled(disabled, content, newContent) {
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return disabled || (content === newContent);
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},
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_handleSave(e) {
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e.preventDefault();
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this.fire('editable-content-save', {content: this._newContent});
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},
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_handleCancel(e) {
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e.preventDefault();
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this.editing = false;
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this.fire('editable-content-cancel');
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},
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});
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})();
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