117 lines
3.5 KiB
JavaScript
117 lines
3.5 KiB
JavaScript
/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojo.dnd.Avatar"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dojo.dnd.Avatar"] = true;
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dojo.provide("dojo.dnd.Avatar");
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dojo.require("dojo.dnd.common");
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dojo.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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this.isA11y = dojo.hasClass(dojo.body(),"dijit_a11y");
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var a = dojo.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 = dojo.create("tbody", null, a),
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tr = dojo.create("tr", null, b),
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td = dojo.create("td", null, tr),
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icon = this.isA11y ? dojo.create("span", {
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id : "a11yIcon",
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innerHTML : this.manager.copy ? '+' : "<"
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}, td) : null,
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span = dojo.create("span", {
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innerHTML: source.generateText ? this._generateText() : ""
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}, td),
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k = Math.min(5, this.manager.nodes.length), i = 0;
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// we have to set the opacity on IE only after the node is live
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dojo.attr(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 = dojo.create("table"),
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tbody = dojo.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 = dojo.create("tr", null, b);
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td = dojo.create("td", null, tr);
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td.appendChild(node);
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dojo.attr(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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dojo.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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dojo[(this.manager.canDropFlag ? "add" : "remove") + "Class"](this.node, "dojoDndAvatarCanDrop");
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if (this.isA11y){
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var icon = dojo.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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dojo.query(("tr.dojoDndAvatarHeader td span" +(this.isA11y ? " span" : "")), this.node).forEach(
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function(node){
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node.innerHTML = this._generateText();
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}, this);
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},
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_generateText: function(){
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// summary: 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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