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define(function () {
return Marionette.CollectionView.extend({
initialize: function () {
this.resetSelectedIndex();
this.listenTo(this.collection, 'reset', this.resetSelectedIndex);
},
resetSelectedIndex: function () {
this.selectedIndex = 0;
},
onRender: function () {
this.selectCurrent();
},
submitCurrent: function () {
var view = this.children.findByIndex(this.selectedIndex);
if (view != null) {
view.submit();
}
},
selectCurrent: function () {
this.selectItem(this.selectedIndex);
},
selectNext: function () {
if (this.selectedIndex < this.collection.length - 1) {
this.deselectItem(this.selectedIndex);
this.selectedIndex++;
this.selectItem(this.selectedIndex);
}
},
selectPrev: function () {
if (this.selectedIndex > 0) {
this.deselectItem(this.selectedIndex);
this.selectedIndex--;
this.selectItem(this.selectedIndex);
}
},
selectItem: function (index) {
if (index >= 0 && index < this.collection.length) {
var view = this.children.findByIndex(index);
if (view != null) {
view.select();
}
}
},
deselectItem: function (index) {
var view = this.children.findByIndex(index);
if (view != null) {
view.deselect();
}
}
});
});
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