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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);
}
});
})();
}
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