foam-framework
Version:
MVC metaprogramming framework
86 lines (84 loc) • 2.47 kB
JavaScript
/**
* @license
* Copyright 2015 Google Inc. All Rights Reserved.
*
* 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.
*/
CLASS({
package: 'foam.ui.ctrl',
name: 'ViewChoiceComposite',
documentation: function() {/*
Represents a node in a tree of ViewChoiceComposites that has a view of its
own (unselectedViewFactory), a label, and children views.
*/},
traits: [
'foam.memento.MemorableTrait'
],
properties: [
{
name: 'label',
},
{
model_: 'ViewFactoryProperty',
name: 'unselectedViewFactory',
documentation: 'The view factory when no view is selected.',
factory: function() { return function() {}; },
postSet: function() { this.choice = this.choice; }
},
{
model_: 'ArrayProperty',
name: 'views',
documentation: 'An array of ViewChoiceComposites.',
postSet: function() {
this.choice = this.choice;
},
},
{
name: 'choice',
memorable: true,
adapt: function(_, v) {
v = parseInt(v);
if (Number.isNaN(v)) return '';
return v;
},
preSet: function(_, c) {
if (typeof c !== 'number' || !this.views.length) {
return '';
} else {
return Math.max(0, Math.min(c, this.views.length));
}
},
postSet: function() {
if ( typeof this.choice === 'number' )
this.selectedChild = this.views[this.choice];
else {
this.selectedChild = '';
this.viewFactory = this.unselectedViewFactory;
}
}
},
{
name: 'selectedChild',
memorable: true,
postSet: function(oldVal, newVal) {
if (oldVal) Events.unfollow(oldVal.viewFactory$, this.viewFactory$);
if (newVal) Events.follow(newVal.viewFactory$, this.viewFactory$);
}
},
{
model_: 'ViewFactoryProperty',
name: 'viewFactory',
view: 'foam.ui.ViewFactoryView',
}
]
});