我想知道是否可以将我的decorator
函数转换为自定义小部件(基于dijit/form/Select
),以便应用monkey补丁。
或者你有别的解决办法吗?
require([
'dijit/form/Select',
'dojo/_base/window',
'dojo/domReady!'
], function(Select, win) {
var decorator = function(select) {
select.on('change', function(value) {
alert(value);
});
select.dropDown._onUpArrow = function() {
this.focusPrev()
}.bind(select.dropDown);
select.dropDown._onDownArrow = function() {
this.focusNext()
}.bind(select.dropDown);
select.dropDown.focusNext = function() {
var focusNext = function() {
var next = this._getNextFocusableChild(this.focusedChild, 1);
this.focusChild(next);
if (next.option.group) {
focusNext();
}
}.bind(this);
focusNext();
}.bind(select.dropDown);
select.dropDown.focusPrev = function() {
var focusPrev = function() {
var prev = this._getNextFocusableChild(this.focusedChild, -1);
this.focusChild(prev);
if (prev.option.group) {
focusPrev();
}
}.bind(this);
focusPrev();
}.bind(select.dropDown);
select.dropDown.onItemHover = function(item) {
if (item.option.group) {
item._set('hovering', false);
return;
}
if (this.activated) {
this.set('selected', item);
if (item.popup && !item.disabled && !this.hover_timer) {
this.hover_timer = this.defer(function() {
this._openItemPopup(item);
}, this.popupDelay);
}
} else if (this.passivePopupDelay < Infinity) {
if (this.passive_hover_timer) {
this.passive_hover_timer.remove();
}
this.passive_hover_timer = this.defer(function() {
this.onItemClick(item, {
type: 'click'
});
}, this.passivePopupDelay);
}
this._hoveredChild = item;
item._set('hovering', true);
}.bind(select.dropDown);
select.dropDown._onItemFocus = function(item) {
if (item.option.group) {
return;
}
if (this._hoveredChild && this._hoveredChild != item) {
this.onItemUnhover(this._hoveredChild);
}
this.set('selected', item);
}.bind(select.dropDown);
};
var select = new Select({
name: 'select2',
options: [{
label: '<i>Colors I love</i>',
value: 'G 1',
group: true,
disabled: true
},
{
label: 'Red',
value: '1'
},
{
label: 'Green',
value: '2',
selected: true
},
{
label: 'Yello',
value: '3'
},
{
label: 'Purple',
value: '4'
},
{
label: '<i>Food I love</</i>',
value: 'G 2',
group: true,
disabled: true
},
{
label: 'Red tomatoes',
value: '1'
},
{
label: 'Green apples',
value: '3'
}
]
}, 'select');
decorator(select);
});
<link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/dojo/1.12.1/dijit/themes/claro/claro.css" />
<script>
window.dojoConfig = {
parseOnLoad: false,
async: true
};
</script>
<script src="//ajax.googleapis.com/ajax/libs/dojo/1.12.1/dojo/dojo.js">
</script>
<body class="claro">
<div id="select"></div>
</body>
代码取自此answer;
1条答案
按热度按时间dced5bon1#
如果您想在项目中创建一个自定义表单选择JS小部件,而不使用装饰器,
对于可重用性创建JS文件(例如
app/path/MyCustomSelect.js
),(确保您配置您的dojo以定位创建的文件,请参见文档中的此处),导入资源(AMD使用define)后创建小部件并使用declare类继承选择,在这个阶段,你必须覆盖postCreate(小部件基础生命周期方法,这是在示例化之后和渲染之前执行的),然后添加装饰器代码(通过用当前作用域
this
替换select
),为什么要使用postcreate,因为小部件是示例化的,所有其他引用的资源都是创建的,所以你可以访问
this.dropDown
属性,这在构造函数方法中是不可能的,请参见上面的链接以更好地理解小部件的生命周期阶段。在应用中使用小部件后,使用require(“location_to_your_jsile”)并在回调中使用其引用,
因此,
MyCustomSelect.js
文件应如下所示:如果你想要一个实时样本(不使用单独的文件),请参见下面的代码片段:).
x一个一个一个一个x一个一个二个x