我正在使用JQuery UI在Angular中编写一个站点,它允许可安排的项目。我最初用数组的内容填充DOM,然后允许用户拖动DOM元素。我希望DOM元素的拖动与数组顺序的更新相对应。
我使用ng-repeat
指令将数组转换为DOM树,并最初认为数组元素重新排列将自动发生。我可以用Angular做这些吗?下面是我的代码:
<!DOCTYPE html>
<html ng-app = "">
<head>
<style>
#BlockContainer li
{
/*make there be no selection on each list item*/
-moz-user-select: none;
-khtml-user-select: none;
-webkit-user-select: none;
user-select: none;
}
li
{
list-style-type: none;
}
#ArchtypeContainer li, #BlockContainer li
{
display: block;
}
</style>
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet" data-require="bootstrap-css@3.1.1" data-semver="3.1.1" />
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.0/jquery-ui.js"></script>
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js" data-require="bootstrap@3.1.1" data-semver="3.1.1"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.17/angular.min.js" data-require="angular.js@1.2.17" data-semver="1.2.17"></script>
</head>
<body ng-controller="Controller">
<script>
function Controller($scope)
{
//sets out the data archtypes for everything
$scope.BlockArchtypes = [{"Name": "Move Seconds", "Arguments": [{"Placeholder": "Speed (0 - 100)"}, {"Placeholder": "Seconds"}]}, {"Name": "Move Distance", "Arguments": [{"Placeholder": "Distance (Feet)"}, {"Placeholder": "Speed (0 - 100)"}]}];
$scope.BlockData = [];
$scope.NewBlock = function (index)
{
$scope.ToCopy = angular.copy($scope.BlockArchtypes[index]);
$scope.BlockData.push($scope.ToCopy);
}
$scope.Update = function(){
console.log($scope.BlockData);
}
}
$(document).ready(function()
{
$("#BlockContainer").sortable(
{
change: function(event, ui)
{
$scope.apply($scope.BlockData);
}
});
});
</script>
<h3>Archtypes</h3>
<ul id = "ArchtypeContainer">
<li ng-repeat="Block in BlockArchtypes">
<div>{{Block.Name}}</div>
<div ng-repeat="Argument in Block.Arguments"><input type="text" ng-model = "Argument.Value" placeholder="{{Argument.Placeholder}}" /></div>
<button ng-click = "NewBlock($index);">Add</button>
</li>
</ul>
<h3>Program</h3>
<button ng-click = "Update()">Update</button>
<ul id = "BlockContainer">
<li ng-repeat="Block in BlockData track by $index">
<div>{{Block.Name}}</div>
<div ng-repeat="Argument in Block.Arguments"><input type="text" ng-model = "Argument.Value" placeholder="{{Argument.Placeholder}}" /></div>
</li>
</ul>
</body>
</html>
这可能是使用AngularJS拖放库的最佳方式,它基本上是jQuery UI的可拖放功能,但可以直接与Angular一起工作。
可拖动的例子:<div class="btn btn-primary" data-drag="true" data-jqyoui-options="{revert: 'invalid'}"
ng-model="list1" jqyoui-draggable="{animate:true}" ng-hide="!list1.title">
{{list1.title}}
</div>
可放置示例:
<div class="thumbnail" data-drop="true" data-jqyoui-options ng-model="list2"
jqyoui-droppable style='height:50px;'>
<div class="btn btn-success" data-drag="false" data-jqyoui-options ng-model="list2"
jqyoui-draggable ng-hide="!list2.title">
{{list2.title}}
</div>
</div>
Angular代码:
App.controller('OverviewCtrl', function($scope) {
$scope.list1 = {title: 'AngularJS - Drag Me'};
$scope.list2 = {};
});
网上有更多的例子。
你没有让它与jQuery UI一起工作的原因是因为Angular不知道DOM的变化,除非这些变化是由Angular自己完成的,或者你告诉它这些变化(例如通过$scope.$apply())…所以,为了让这一切正常工作,你需要为所有可移动的元素附加观察者或创建回调函数,并让Angular在每次更改时进行必要的作用域变量更新——这就是为什么我建议使用这个库,它几乎为你做了所有的事情。