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lists.js
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if(!dojo._hasResource["dojox.dtl.filter.lists"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.dtl.filter.lists"] = true;
dojo.provide("dojox.dtl.filter.lists")
dojo.require("dojox.dtl._base");
dojo.mixin(dojox.dtl.filter.lists, {
_dictsort: function(a, b){
if(a[0] == b[0]) return 0;
return (a[0] < b[0]) ? -1 : 1;
},
dictsort: function(value, arg){
// summary: Takes a list of dicts, returns that list sorted by the property given in the argument.
if(!arg) return value;
var items = [];
for(var key in value){
items.push([dojox.dtl.resolveVariable('var.' + arg, new dojox.dtl.Context({ 'var' : value[key]})), value[key]]);
}
items.sort(dojox.dtl.filter.lists._dictsort);
var output = [];
for(var i = 0, item; item = items[i]; i++){
output.push(item[1]);
}
return output;
},
dictsortreversed: function(value, arg){
// summary: Takes a list of dicts, returns that list sorted in reverse order by the property given in the argument.
if(!arg) return value;
var dictsort = dojox.dtl.filter.lists.dictsort(value, arg);
return dictsort.reverse();
},
first: function(value){
// summary: Returns the first item in a list
return (value.length) ? value[0] : "";
},
join: function(value, arg){
// summary: Joins a list with a string, like Python's ``str.join(list)``
// description:
// Django throws a compile error, but JS can't do arg checks
// so we're left with run time errors, which aren't wise for something
// as trivial here as an empty arg.
return value.join(arg || ",");
},
length: function(value){
// summary: Returns the length of the value - useful for lists
return (isNaN(value.length)) ? (value + "").length : value.length;
},
length_is: function(value, arg){
// summary: Returns a boolean of whether the value's length is the argument
return value.length == parseInt(arg);
},
random: function(value){
// summary: Returns a random item from the list
return value[Math.floor(Math.random() * value.length)];
},
slice: function(value, arg){
// summary: Returns a slice of the list.
// description:
// Uses the same syntax as Python's list slicing; see
// http://diveintopython.org/native_data_types/lists.html#odbchelper.list.slice
// for an introduction.
// Also uses the optional third value to denote every X item.
arg = arg || "";
var parts = arg.split(":");
var bits = [];
for(var i = 0; i < parts.length; i++){
if(!parts[i].length){
bits.push(null);
}else{
bits.push(parseInt(parts[i]));
}
}
if(bits[0] === null){
bits[0] = 0;
}
if(bits[0] < 0){
bits[0] = value.length + bits[0];
}
if(bits.length < 2 || bits[1] === null){
bits[1] = value.length;
}
if(bits[1] < 0){
bits[1] = value.length + bits[1];
}
return value.slice(bits[0], bits[1]);
},
_unordered_list: function(value, tabs){
var ddl = dojox.dtl.filter.lists;
var indent = "";
for(var i = 0; i < tabs; i++){
indent += "\t";
}
if(value[1] && value[1].length){
var recurse = [];
for(var i = 0; i < value[1].length; i++){
recurse.push(ddl._unordered_list(value[1][i], tabs + 1))
}
return indent + "<li>" + value[0] + "\n" + indent + "<ul>\n" + recurse.join("\n") + "\n" + indent + "</ul>\n" + indent + "</li>";
}else{
return indent + "<li>" + value[0] + "</li>";
}
},
unordered_list: function(value){
// summary:
// Recursively takes a self-nested list and returns an HTML unordered list --
// WITHOUT opening and closing <ul> tags.
// description:
// The list is assumed to be in the proper format. For example, if ``var`` contains
// ``['States', [['Kansas', [['Lawrence', []], ['Topeka', []]]], ['Illinois', []]]]``,
// then ``{{ var|unordered_list }}`` would return::
//
// <li>States
// <ul>
// <li>Kansas
// <ul>
// <li>Lawrence</li>
// <li>Topeka</li>
// </ul>
// </li>
// <li>Illinois</li>
// </ul>
// </li>
return dojox.dtl.filter.lists._unordered_list(value, 1);
}
});
}

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