iterations-live-website/kiwi-irc/client/src/models/applet.js

_kiwi.model.Applet = _kiwi.model.Panel.extend({
    initialize: function (attributes) {
        // Temporary name
        var name = "applet_"+(new Date().getTime().toString()) + Math.ceil(Math.random()*100).toString();
        this.view = new _kiwi.view.Applet({model: this, name: name});

        this.set({
            "name": name
        }, {"silent": true});

        // Holds the loaded applet
        this.loaded_applet = null;
    },


    // Load an applet within this panel
    load: function (applet_object, applet_name) {
        if (typeof applet_object === 'object') {
            // Make sure this is a valid Applet
            if (applet_object.get || applet_object.extend) {

                // Try find a title for the applet
                this.set('title', applet_object.get('title') || _kiwi.global.i18n.translate('client_models_applet_unknown').fetch());

                // Update the tabs title if the applet changes it
                applet_object.bind('change:title', function (obj, new_value) {
                    this.set('title', new_value);
                }, this);

                // If this applet has a UI, add it now
                this.view.$el.html('');
                if (applet_object.view) {
                    this.view.$el.append(applet_object.view.$el);
                }

                // Keep a reference to this applet
                this.loaded_applet = applet_object;

                this.loaded_applet.trigger('applet_loaded');
            }

        } else if (typeof applet_object === 'string') {
            // Treat this as a URL to an applet script and load it
            this.loadFromUrl(applet_object, applet_name);
        }

        return this;
    },


    loadFromUrl: function(applet_url, applet_name) {
        var that = this;

        this.view.$el.html(_kiwi.global.i18n.translate('client_models_applet_loading').fetch());
        $script(applet_url, function () {
            // Check if the applet loaded OK
            if (!_kiwi.applets[applet_name]) {
                that.view.$el.html(_kiwi.global.i18n.translate('client_models_applet_notfound').fetch());
                return;
            }

            // Load a new instance of this applet
            that.load(new _kiwi.applets[applet_name]());
        });
    },


    close: function () {
        this.view.$el.remove();
        this.destroy();

        this.view = undefined;

        // Call the applets dispose method if it has one
        if (this.loaded_applet && this.loaded_applet.dispose) {
            this.loaded_applet.dispose();
        }

        // Call the inherited close()
        this.constructor.__super__.close.apply(this, arguments);
    },

    isApplet: function () {
        return true;
    }
},


{
    // Load an applet type once only. If it already exists, return that
    loadOnce: function (applet_name) {

        // See if we have an instance loaded already
        var applet = _.find(_kiwi.app.panels('applets'), function(panel) {
            // Ignore if it's not an applet
            if (!panel.isApplet()) return;

            // Ignore if it doesn't have an applet loaded
            if (!panel.loaded_applet) return;

            if (panel.loaded_applet.get('_applet_name') === applet_name) {
                return true;
            }
        });

        if (applet) return applet;


        // If we didn't find an instance, load a new one up
        return this.load(applet_name);
    },


    load: function (applet_name, options) {
        var applet, applet_obj;

        options = options || {};

        applet_obj = this.getApplet(applet_name);

        if (!applet_obj)
            return;

        // Create the applet and load the content
        applet = new _kiwi.model.Applet();
        applet.load(new applet_obj({_applet_name: applet_name}));

        // Add it into the tab list if needed (default)
        if (!options.no_tab)
            _kiwi.app.applet_panels.add(applet);


        return applet;
    },


    getApplet: function (applet_name) {
        return _kiwi.applets[applet_name] || null;
    },


    register: function (applet_name, applet) {
        _kiwi.applets[applet_name] = applet;
    }
});