New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit

git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f

1 files changed, 82 insertions, 0 deletions

diff --git a/includes/js/dojo/dnd/Avatar.js b/includes/js/dojo/dnd/Avatar.js
new file mode 100644
index 0000000..33ccb07
--- /dev/null
+++ b/includes/js/dojo/dnd/Avatar.js
@@ -0,0 +1,82 @@
+if(!dojo._hasResource["dojo.dnd.Avatar"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojo.dnd.Avatar"] = true;
+dojo.provide("dojo.dnd.Avatar");
+
+dojo.require("dojo.dnd.common");
+
+dojo.declare("dojo.dnd.Avatar", null, {
+	// summary: an object, which represents transferred DnD items visually
+	// manager: Object: a DnD manager object
+
+	constructor: function(manager){
+		this.manager = manager;
+		this.construct();
+	},
+
+	// methods
+	construct: function(){
+		// summary: a constructor function;
+		//	it is separate so it can be (dynamically) overwritten in case of need
+		var a = dojo.doc.createElement("table");
+		a.className = "dojoDndAvatar";
+		a.style.position = "absolute";
+		a.style.zIndex = 1999;
+		a.style.margin = "0px"; // to avoid dojo.marginBox() problems with table's margins
+		var b = dojo.doc.createElement("tbody");
+		var tr = dojo.doc.createElement("tr");
+		tr.className = "dojoDndAvatarHeader";
+		var td = dojo.doc.createElement("td");
+		td.innerHTML = this._generateText();
+		tr.appendChild(td);
+		dojo.style(tr, "opacity", 0.9);
+		b.appendChild(tr);
+		var k = Math.min(5, this.manager.nodes.length);
+		var source = this.manager.source;
+		for(var i = 0; i < k; ++i){
+			tr = dojo.doc.createElement("tr");
+			tr.className = "dojoDndAvatarItem";
+			td = dojo.doc.createElement("td");
+			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 = dojo.doc.createElement("table"),
+						tbody = dojo.doc.createElement("tbody");
+					tbody.appendChild(node);
+					table.appendChild(tbody);
+					node = table;
+				}
+			}
+			node.id = "";
+			td.appendChild(node);
+			tr.appendChild(td);
+			dojo.style(tr, "opacity", (9 - i) / 10);
+			b.appendChild(tr);
+		}
+		a.appendChild(b);
+		this.node = a;
+	},
+	destroy: function(){
+		// summary: a desctructor for the avatar, called to remove all references so it can be garbage-collected
+		dojo._destroyElement(this.node);
+		this.node = false;
+	},
+	update: function(){
+		// summary: updates the avatar to reflect the current DnD state
+		dojo[(this.manager.canDropFlag ? "add" : "remove") + "Class"](this.node, "dojoDndAvatarCanDrop");
+		// replace text
+		dojo.query("tr.dojoDndAvatarHeader td").forEach(function(node){
+			node.innerHTML = this._generateText();
+		}, this);
+	},
+	_generateText: function(){
+		// summary: generates a proper text to reflect copying or moving of items
+		return this.manager.nodes.length.toString();
+	}
+});
+
+}