define([
|
"../_base/declare",
|
"../_base/window",
|
"../dom",
|
"../dom-attr",
|
"../dom-class",
|
"../dom-construct",
|
"../hccss",
|
"../query"
|
], function(declare, win, dom, domAttr, domClass, domConstruct, has, query){
|
|
// module:
|
// dojo/dnd/Avatar
|
|
return declare("dojo.dnd.Avatar", null, {
|
// summary:
|
// Object that represents transferred DnD items visually
|
// manager: Object
|
// a DnD manager object
|
|
constructor: function(manager){
|
this.manager = manager;
|
this.construct();
|
},
|
|
// methods
|
construct: function(){
|
// summary:
|
// constructor function;
|
// it is separate so it can be (dynamically) overwritten in case of need
|
|
var a = domConstruct.create("table", {
|
"class": "dojoDndAvatar",
|
style: {
|
position: "absolute",
|
zIndex: "1999",
|
margin: "0px"
|
}
|
}),
|
source = this.manager.source, node,
|
b = domConstruct.create("tbody", null, a),
|
tr = domConstruct.create("tr", null, b),
|
td = domConstruct.create("td", null, tr),
|
k = Math.min(5, this.manager.nodes.length), i = 0;
|
|
if(has("highcontrast")){
|
domConstruct.create("span", {
|
id : "a11yIcon",
|
innerHTML : this.manager.copy ? '+' : "<"
|
}, td)
|
}
|
domConstruct.create("span", {
|
innerHTML: source.generateText ? this._generateText() : ""
|
}, td);
|
|
// we have to set the opacity on IE only after the node is live
|
domAttr.set(tr, {
|
"class": "dojoDndAvatarHeader",
|
style: {opacity: 0.9}
|
});
|
for(; i < k; ++i){
|
if(source.creator){
|
// create an avatar representation of the node
|
node = source._normalizedCreator(source.getItem(this.manager.nodes[i].id).data, "avatar").node;
|
}else{
|
// or just clone the node and hope it works
|
node = this.manager.nodes[i].cloneNode(true);
|
if(node.tagName.toLowerCase() == "tr"){
|
// insert extra table nodes
|
var table = domConstruct.create("table"),
|
tbody = domConstruct.create("tbody", null, table);
|
tbody.appendChild(node);
|
node = table;
|
}
|
}
|
node.id = "";
|
tr = domConstruct.create("tr", null, b);
|
td = domConstruct.create("td", null, tr);
|
td.appendChild(node);
|
domAttr.set(tr, {
|
"class": "dojoDndAvatarItem",
|
style: {opacity: (9 - i) / 10}
|
});
|
}
|
this.node = a;
|
},
|
destroy: function(){
|
// summary:
|
// destructor for the avatar; called to remove all references so it can be garbage-collected
|
domConstruct.destroy(this.node);
|
this.node = false;
|
},
|
update: function(){
|
// summary:
|
// updates the avatar to reflect the current DnD state
|
domClass.toggle(this.node, "dojoDndAvatarCanDrop", this.manager.canDropFlag);
|
if(has("highcontrast")){
|
var icon = dom.byId("a11yIcon");
|
var text = '+'; // assume canDrop && copy
|
if (this.manager.canDropFlag && !this.manager.copy){
|
text = '< '; // canDrop && move
|
}else if (!this.manager.canDropFlag && !this.manager.copy){
|
text = "o"; //!canDrop && move
|
}else if(!this.manager.canDropFlag){
|
text = 'x'; // !canDrop && copy
|
}
|
icon.innerHTML=text;
|
}
|
// replace text
|
query(("tr.dojoDndAvatarHeader td span" +(has("highcontrast") ? " span" : "")), this.node).forEach(
|
function(node){
|
node.innerHTML = this.manager.source.generateText ? this._generateText() : "";
|
}, this);
|
},
|
_generateText: function(){
|
// summary:
|
// generates a proper text to reflect copying or moving of items
|
return this.manager.nodes.length.toString();
|
}
|
});
|
|
});
|
