推迟删除视图,使其可以动画化 [英] Deferring removal of a view so it can be animated
问题描述
{{如果App.contentsAreVisible}}
{{查看ToggleContents}}
{{/ if}}
通过设置 App.set(contentsAreVisible,[true / false]);
,可以在UI的任何数量的其他部分切换区域
这一切都很好。
然而,我现在想在视图切换时进行动画处理。钩入 didInsertElement
用于动画显示该区域,但是我不能在 willDestroyElement
中执行相同操作,因为元素是一旦该函数返回,在动画有机会运行之前就将其移除。
App.ToggleContents = Ember.View.extend ({
//这工作正常
didInsertElement:function(){
this。$()。hide()。show(slow);
},
//这不工作
willDestroyElement:function(){
this。$()。hide(slow,function(){
//动画完成,通知元素可以被删除
});
}
});
有没有办法告诉视图推迟从DOM中删除元素,直到动画完成?
这是一个互动示例的小提琴: http: //jsfiddle.net/rlivsey/RxxPU/
您可以创建一个 hide
函数在您的视图上,当回调完成时会删除视图,请参阅 http:// jsfiddle。 net / 7EuSC /
Handlebars :
< script type =text / x-handlebarsdata-template-name =tmpl>
< button {{actionhide}}> hide< / button>
这是我的测试视图,它被淡入淡出
< / script>
JavaScript :
Ember.View.create({
templateName:'tmpl',
didInsertElement:function(){
this。$()。hide()。show(slow);
},
_hideViewChanged:function(){
if(this.get('hideView')){
this.hide();
}
}。观察('hideView'),
hide:function(){
var that = this;
this $()hide(slow,function()
that.remove();
});
}
})。append();
Say I have a template which displays a view based on a property:
{{#if App.contentsAreVisible}}
{{view ToggleContents}}
{{/if}}
This area is toggled by any number of other parts of the UI by setting App.set("contentsAreVisible", [true/false]);
This all works fine.
However, I now want to animate when the view is toggled. Hooking into didInsertElement
works to animate showing the area, but I can't do the same in willDestroyElement
because the element is removed as soon as that function returns, before the animation has a chance to run.
App.ToggleContents = Ember.View.extend({
// this works fine
didInsertElement: function(){
this.$().hide().show("slow");
},
// this doesn't work
willDestroyElement: function(){
this.$().hide("slow", function(){
// animation is complete, notify that the element can be removed
});
}
});
Is there any way to tell the view to defer removing the element from the DOM until the animation is complete?
Here's a fiddle with an interactive example: http://jsfiddle.net/rlivsey/RxxPU/
You could create a hide
function on your view which removes the view when the callback is finished, see http://jsfiddle.net/7EuSC/
Handlebars:
<script type="text/x-handlebars" data-template-name="tmpl" >
<button {{action "hide" }}>hide</button>
This is my test view which is faded in and out
</script>
JavaScript:
Ember.View.create({
templateName: 'tmpl',
didInsertElement: function() {
this.$().hide().show("slow");
},
_hideViewChanged: function() {
if (this.get('hideView')) {
this.hide();
}
}.observes('hideView'),
hide: function() {
var that = this;
this.$().hide("slow", function() {
that.remove();
});
}
}).append();
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