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, 196 insertions, 0 deletions

diff --git a/includes/js/dojox/dtl/tag/loop.js b/includes/js/dojox/dtl/tag/loop.js
new file mode 100644
index 0000000..3626c52
--- /dev/null
+++ b/includes/js/dojox/dtl/tag/loop.js
@@ -0,0 +1,196 @@
+if(!dojo._hasResource["dojox.dtl.tag.loop"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.dtl.tag.loop"] = true;
+dojo.provide("dojox.dtl.tag.loop");
+
+dojo.require("dojox.dtl._base");
+dojo.require("dojox.string.tokenize");
+
+(function(){
+	var dd = dojox.dtl;
+	var ddtl = dd.tag.loop;
+
+	ddtl.CycleNode = dojo.extend(function(cyclevars, name, TextNode, shared){
+		this.cyclevars = cyclevars;
+		this.name = name;
+		this.TextNode = TextNode;
+		this.shared = shared || {counter: -1, map: {}};
+	},
+	{
+		render: function(context, buffer){
+			if(context.forloop && !context.forloop.counter0){
+				this.shared.counter = -1;
+			}
+
+			++this.shared.counter;
+			var value = this.cyclevars[this.shared.counter % this.cyclevars.length];
+
+			var map = this.shared.map;
+			if(!map[value]){
+				map[value] = new dd._Filter(value);
+			}
+			value = map[value].resolve(context, buffer);
+
+			if(this.name){
+				context[this.name] = value;
+			}
+			if(!this.contents){
+				this.contents = new this.TextNode("");
+			}
+			this.contents.set(value);
+			return this.contents.render(context, buffer);
+		},
+		unrender: function(context, buffer){
+			return this.contents.unrender(context, buffer);
+		},
+		clone: function(){
+			return new this.constructor(this.cyclevars, this.name, this.TextNode, this.shared);
+		}
+	});
+
+	ddtl.IfChangedNode = dojo.extend(function(nodes, vars, shared){
+		this.nodes = nodes;
+		this._vars = vars;
+		this.shared = shared || {last: null};
+		this.vars = dojo.map(vars, function(item){
+			return new dojox.dtl._Filter(item);
+		});
+	}, {
+		render: function(context, buffer){
+			if(context.forloop && context.forloop.first){
+				this.shared.last = null;
+			}
+
+			var change;
+			if(this.vars.length){
+				change = dojo.toJson(dojo.map(this.vars, function(item){
+					return item.resolve(context);
+				}));
+			}else{
+				change = this.nodes.dummyRender(context, buffer);
+			}
+
+			if(change != this.shared.last){
+				var firstloop = (this.shared.last === null);
+				this.shared.last = change;
+				context.push();
+				context.ifchanged = {firstloop: firstloop}
+				buffer = this.nodes.render(context, buffer);
+				context.pop();
+			}
+			return buffer;
+		},
+		unrender: function(context, buffer){
+			this.nodes.unrender(context, buffer);
+		},
+		clone: function(buffer){
+			return new this.constructor(this.nodes.clone(buffer), this._vars, this.shared);
+		}
+	});
+
+	ddtl.RegroupNode = dojo.extend(function(expression, key, alias){
+		this._expression = expression;
+		this.expression = new dd._Filter(expression);
+		this.key = key;
+		this.alias = alias;
+	},
+	{
+		_push: function(container, grouper, stack){
+			if(stack.length){
+				container.push({ grouper: grouper, list: stack })
+			}
+		},
+		render: function(context, buffer){
+			context[this.alias] = [];
+			var list = this.expression.resolve(context);
+			if(list){
+				var last = null;
+				var stack = [];
+				for(var i = 0; i < list.length; i++){
+					var id = list[i][this.key];
+					if(last !== id){
+						this._push(context[this.alias], last, stack);
+						last = id;
+						stack = [list[i]];
+					}else{
+						stack.push(list[i]);
+					}
+				}
+				this._push(context[this.alias], last, stack);
+			}
+			return buffer;
+		},
+		unrender: function(context, buffer){
+			return buffer;
+		},
+		clone: function(context, buffer){
+			return this;
+		}
+	});
+
+	dojo.mixin(ddtl, {
+		cycle: function(parser, text){
+			// summary: Cycle among the given strings each time this tag is encountered
+			var args = text.split(" ");
+
+			if(args.length < 2){
+				throw new Error("'cycle' tag requires at least two arguments");
+			}
+
+			if(args[1].indexOf(",") != -1){
+				var vars = args[1].split(",");
+				args = [args[0]];
+				for(var i = 0; i < vars.length; i++){
+					args.push('"' + vars[i] + '"');
+				}
+			}
+
+			if(args.length == 2){
+				var name = args[args.length - 1];
+
+				if(!parser._namedCycleNodes){
+					throw new Error("No named cycles in template: '" + name + "' is not defined");
+				}
+				if(!parser._namedCycleNodes[name]){
+					throw new Error("Named cycle '" + name + "' does not exist");
+				}
+
+		        return parser._namedCycleNodes[name];
+			}
+
+			if(args.length > 4 && args[args.length - 2] == "as"){
+				var name = args[args.length - 1];
+
+				var node = new ddtl.CycleNode(args.slice(1, args.length - 2), name, parser.getTextNodeConstructor());
+
+				if(!parser._namedCycleNodes){
+					parser._namedCycleNodes = {};
+				}
+				parser._namedCycleNodes[name] = node;
+			}else{
+				node = new ddtl.CycleNode(args.slice(1), null, parser.getTextNodeConstructor());
+			}
+
+			return node;
+		},
+		ifchanged: function(parser, text){
+			var parts = dojox.dtl.text.pySplit(text);
+			var nodes = parser.parse(["endifchanged"]);
+			parser.next();
+			return new ddtl.IfChangedNode(nodes, parts.slice(1));
+		},
+		regroup: function(parser, text){
+			var tokens = dojox.string.tokenize(dojo.trim(text), /(\s+)/g, function(spaces){
+				return spaces;
+			});
+			if(tokens.length < 11 || tokens[tokens.length - 3] != "as" || tokens[tokens.length - 7] != "by"){
+				throw new Error("Expected the format: regroup list by key as newList");
+			}
+			var expression = tokens.slice(2, -8).join("");
+			var key = tokens[tokens.length - 5];
+			var alias = tokens[tokens.length - 1];
+			return new ddtl.RegroupNode(expression, key, alias);
+		}
+	});
+})();
+
+}