131 lines
2.9 KiB
JavaScript
131 lines
2.9 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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Polymer({
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is: 'gr-editable-label',
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/**
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* Fired when the value is changed.
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*
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* @event changed
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*/
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properties: {
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editing: {
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type: Boolean,
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value: false,
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},
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value: {
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type: String,
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notify: true,
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value: null,
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observer: '_updateTitle',
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},
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placeholder: {
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type: String,
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value: null,
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},
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readOnly: {
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type: Boolean,
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value: false,
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},
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_inputText: String,
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},
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behaviors: [
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Gerrit.KeyboardShortcutBehavior,
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],
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keyBindings: {
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enter: '_handleEnter',
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esc: '_handleEsc',
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},
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hostAttributes: {
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tabindex: '0',
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},
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_usePlaceholder(value, placeholder) {
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return (!value || !value.length) && placeholder;
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},
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_computeLabel(value, placeholder) {
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if (this._usePlaceholder(value, placeholder)) {
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return placeholder;
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}
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return value;
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},
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_open() {
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if (this.readOnly || this.editing) { return; }
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this._inputText = this.value;
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this.editing = true;
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this.async(() => {
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this.$.input.focus();
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this.$.input.setSelectionRange(0, this.$.input.value.length);
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});
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},
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_save() {
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if (!this.editing) { return; }
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this.value = this._inputText;
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this.editing = false;
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this.fire('changed', this.value);
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},
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_cancel() {
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if (!this.editing) { return; }
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this.editing = false;
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this._inputText = this.value;
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},
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_handleEnter(e) {
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e = this.getKeyboardEvent(e);
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const target = Polymer.dom(e).rootTarget;
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if (target === this.$.input) {
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e.preventDefault();
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this._save();
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}
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},
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_handleEsc(e) {
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e = this.getKeyboardEvent(e);
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const target = Polymer.dom(e).rootTarget;
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if (target === this.$.input) {
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e.preventDefault();
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this._cancel();
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}
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},
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_computeLabelClass(readOnly, value, placeholder) {
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const classes = [];
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if (!readOnly) { classes.push('editable'); }
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if (this._usePlaceholder(value, placeholder)) {
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classes.push('placeholder');
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}
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return classes.join(' ');
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},
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_updateTitle(value) {
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this.setAttribute('title', (value && value.length) ? value : null);
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},
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});
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})();
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