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