glowingbear-mainbox/js/plugins.js
2013-10-08 19:08:20 -04:00

132 lines
3.7 KiB
JavaScript

/*
* This file contains the plugin definitions
*/
plugins = angular.module('plugins', []);
/*
* Definition of a user provided plugin with sensible default values
*
* User plugins are created by providing a contentForMessage function
* that parses a string and return any additional content.
*/
var Plugin = function(contentForMessage) {
return {
contentForMessage: contentForMessage,
exclusive: false,
}
}
/*
* This service provides access to the plugin manager
*
* The plugin manager is where the various user provided plugins
* are registered. It is responsible for finding additional content
* to display when messages are received.
*
*/
plugins.service('plugins', ['userPlugins', function(userPlugins) {
/*
* Defines the plugin manager object
*/
var PluginManagerObject = function() {
var plugins = [];
/*
* Register the user provides plugins
*
* @param userPlugins user provided plugins
*/
var registerPlugins = function(userPlugins) {
for (var i = 0; i < userPlugins.length; i++) {
plugins.push(userPlugins[i]);
};
}
/*
* Iterates through all the registered plugins
* and run their contentForMessage function.
*/
var contentForMessage = function(message) {
var content = [];
for (var i = 0; i < plugins.length; i++) {
var pluginContent = plugins[i].contentForMessage(message);
if (pluginContent) {
var pluginContent = {'visible': false,
'content': pluginContent }
content.push(pluginContent);
if (plugins[i].exclusive) {
break;
}
}
}
return content;
}
return {
registerPlugins: registerPlugins,
contentForMessage: contentForMessage
}
}
// Instanciates and registers the plugin manager.
this.PluginManager = new PluginManagerObject();
this.PluginManager.registerPlugins(userPlugins.plugins);
}]);
/*
* This factory exposes the collection of user provided plugins.
*
* To create your own plugin, you need to:
*
* 1. Define it's contentForMessage function. The contentForMessage
* function takes a string as a parameter and returns a HTML string.
*
* 2. Instanciate a Plugin object with contentForMessage function as it's
* argument.
*
* 3. Add it to the plugins array.
*
*/
plugins.factory('userPlugins', function() {
var youtubePlugin = new Plugin(function(message) {
if (message.indexOf('youtube.com') != -1) {
var index = message.indexOf("?v=");
var token = message.substr(index+3);
return '<iframe width="560" height="315" src="http://www.youtube.com/embed/' + token + '" frameborder="0" allowfullscreen></iframe>'
}
return null;
});
var urlPlugin = new Plugin(function(message) {
var urlPattern = /(http|ftp|https):\/\/[\w-]+(\.[\w-]+)+([\w.,@?^=%&amp;:\/~+#-]*[\w@?^=%&amp;\/~+#-])?/;
var url = message.match(urlPattern);
if (url) {
return '<a href="' + url[0] + '">' + message + '</a>';
}
return null;
});
var imagePlugin = new Plugin(function(message) {
var urls = message.match(/https?:\/\/[^\s]*\.(jpg|png|gif)\b/)
if (urls != null) {
var url = urls[0]; /* Actually parse one url per message */
return '<img src="' + url + '" height="300">';
}
return null;
});
return {
plugins: [youtubePlugin, urlPlugin, imagePlugin]
}
});