Pre-compiled jQuery tmpl support for KO 2.0.0

knockout.compiledTemplateSource.js

// jQuery.tmpl Compiled Source Plugin for Knockout 2.0
// Kamran Ayub - http://kamranicus.com
//
// Adds support for referencing named pre-compiled templates
// e.g. $.template('name', 'markup')
//
// Specifically, this makes Cassette Knockout compiled templates
// work in KO 2.0.0
(function (ko) {
    ko.templateSources.compiledTemplateSource = function (name) {
        this._data = {};
        this._data["precompiled"] = name;
    };

    ko.templateSources.compiledTemplateSource.prototype['text'] = function (/* valueToWrite */) {
        return this._data["precompiled"];
    };

    ko.templateSources.compiledTemplateSource.prototype['data'] = function (key /*, valueToWrite */) {
        if (arguments.length === 1) {
            return this._data[key];
        } else {
            this._data[key] = arguments[1];
        }
    };

    var templateEngine = new ko.jqueryTmplTemplateEngine(),
        __super_makeTemplateSource = templateEngine['makeTemplateSource'];

    templateEngine['makeTemplateSource'] = function (template) {
        if (jQuery['template'][template]) {
            return new ko.templateSources.compiledTemplateSource(template);
        } else {
            return __super_makeTemplateSource.call(this, template);
        }
    };

    ko.setTemplateEngine(templateEngine);
})(ko);