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// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
(function() {
'use strict';
Polymer({
is: 'gr-editable-label',
/**
* Fired when the value is changed.
*
* @event changed
*/
properties: {
editing: {
type: Boolean,
value: false,
},
value: {
type: String,
notify: true,
value: null,
observer: '_updateTitle',
},
placeholder: {
type: String,
value: null,
},
readOnly: {
type: Boolean,
value: false,
},
_inputText: String,
},
behaviors: [
Gerrit.KeyboardShortcutBehavior,
],
keyBindings: {
enter: '_handleEnter',
esc: '_handleEsc',
},
hostAttributes: {
tabindex: '0',
},
_usePlaceholder(value, placeholder) {
return (!value || !value.length) && placeholder;
},
_computeLabel(value, placeholder) {
if (this._usePlaceholder(value, placeholder)) {
return placeholder;
}
return value;
},
_open() {
if (this.readOnly || this.editing) { return; }
this._inputText = this.value;
this.editing = true;
this.async(() => {
this.$.input.focus();
this.$.input.setSelectionRange(0, this.$.input.value.length);
});
},
_save() {
if (!this.editing) { return; }
this.value = this._inputText;
this.editing = false;
this.fire('changed', this.value);
},
_cancel() {
if (!this.editing) { return; }
this.editing = false;
this._inputText = this.value;
},
/**
* @suppress {checkTypes}
* Closure doesn't think 'e' is an Event.
* TODO(beckysiegel) figure out why.
*/
_handleEnter(e) {
e = this.getKeyboardEvent(e);
const target = Polymer.dom(e).rootTarget;
if (target === this.$.input) {
e.preventDefault();
this._save();
}
},
/**
* @suppress {checkTypes}
* Closure doesn't think 'e' is an Event.
* TODO(beckysiegel) figure out why.
*/
_handleEsc(e) {
e = this.getKeyboardEvent(e);
const target = Polymer.dom(e).rootTarget;
if (target === this.$.input) {
e.preventDefault();
this._cancel();
}
},
_computeLabelClass(readOnly, value, placeholder) {
const classes = [];
if (!readOnly) { classes.push('editable'); }
if (this._usePlaceholder(value, placeholder)) {
classes.push('placeholder');
}
return classes.join(' ');
},
_updateTitle(value) {
this.setAttribute('title', (value && value.length) ? value : null);
},
});
})();