我刚刚将此发布到我的品牌新博客：http:
//jasonturim.wordpress.com/2013/09/01/angularjs-drag-and-drop/
代码在这里：
https ://github.com/logicbomb/lvlDragDrop
演示在这里： http: //logicbomb.github.io/ng-directives/drag-drop.html
以下是这些依赖于我在下面包含的 UUID 服务的指令：
var module = angular.module("lvl.directives.dragdrop", ['lvl.services']);
module.directive('lvlDraggable', ['$rootScope', 'uuid', function($rootScope, uuid) {
return {
restrict: 'A',
link: function(scope, el, attrs, controller) {
console.log("linking draggable element");
angular.element(el).attr("draggable", "true");
var id = attrs.id;
if (!attrs.id) {
id = uuid.new()
angular.element(el).attr("id", id);
}
el.bind("dragstart", function(e) {
e.dataTransfer.setData('text', id);
$rootScope.$emit("LVL-DRAG-START");
});
el.bind("dragend", function(e) {
$rootScope.$emit("LVL-DRAG-END");
});
}
}
}]);
module.directive('lvlDropTarget', ['$rootScope', 'uuid', function($rootScope, uuid) {
return {
restrict: 'A',
scope: {
onDrop: '&'
},
link: function(scope, el, attrs, controller) {
var id = attrs.id;
if (!attrs.id) {
id = uuid.new()
angular.element(el).attr("id", id);
}
el.bind("dragover", function(e) {
if (e.preventDefault) {
e.preventDefault(); // Necessary. Allows us to drop.
}
e.dataTransfer.dropEffect = 'move'; // See the section on the DataTransfer object.
return false;
});
el.bind("dragenter", function(e) {
// this / e.target is the current hover target.
angular.element(e.target).addClass('lvl-over');
});
el.bind("dragleave", function(e) {
angular.element(e.target).removeClass('lvl-over'); // this / e.target is previous target element.
});
el.bind("drop", function(e) {
if (e.preventDefault) {
e.preventDefault(); // Necessary. Allows us to drop.
}
if (e.stopPropagation) {
e.stopPropagation(); // Necessary. Allows us to drop.
}
var data = e.dataTransfer.getData("text");
var dest = document.getElementById(id);
var src = document.getElementById(data);
scope.onDrop({dragEl: src, dropEl: dest});
});
$rootScope.$on("LVL-DRAG-START", function() {
var el = document.getElementById(id);
angular.element(el).addClass("lvl-target");
});
$rootScope.$on("LVL-DRAG-END", function() {
var el = document.getElementById(id);
angular.element(el).removeClass("lvl-target");
angular.element(el).removeClass("lvl-over");
});
}
}
}]);
UUID 服务
angular
.module('lvl.services',[])
.factory('uuid', function() {
var svc = {
new: function() {
function _p8(s) {
var p = (Math.random().toString(16)+"000000000").substr(2,8);
return s ? "-" + p.substr(0,4) + "-" + p.substr(4,4) : p ;
}
return _p8() + _p8(true) + _p8(true) + _p8();
},
empty: function() {
return '00000000-0000-0000-0000-000000000000';
}
};
return svc;
});