1 //<script type="text/javascript">
5 * Yet another attempt to create a usable object construction library for seed..
7 * Extend this.. to use it's wonderful features..
10 * @arg xtype {String|Function} constructor or string.
11 * @arg xid {String} (optional) id for registry
12 * @arg xns {String|Object} (optional) namespace eg. Gtk or 'Gtk' - used with xtype.
13 * @arg items {Array} (optional) list of child elements which will be constructed.. using XObject
14 * @arg listeners {Object} (optional) map Gobject signals to functions
15 * @arg pack {Function|String|Array} (optional) how this object gets added to it's parent
16 * @arg el {Object} (optional) premade GObject
19 function XObject (cfg) {
20 // first apply cfg if set.
22 o.pack = o.pack || 'add';
24 XObject.extend(o, cfg); // copy everything into o.
25 XObject.extend(this, o);
29 this.listeners = this.listeners || {};
32 // remove objects/functions from o, so they can be sent to the contructor.
34 if ((typeof(o[i]) == 'object') ||
35 (typeof(o[i]) == 'function') ||
45 // do we need to call 'beforeInit here?'
48 //if ((this.xtype == 'Include')) {
49 // o = this.pre_registry[cls];
51 var isSeed = typeof(Seed) != 'undefined';
53 // xtype= Gtk.Menu ?? what about c_new stuff?
54 if (typeof(this.xtype) == 'function') {
55 this.el = this.el || new this.xtype(o);
58 if (!this.el && o.xns) {
60 var NS = imports.gi[o.xns];
62 Seed.print('Invalid xns: ' + o.xns);
64 constructor = NS[o.xtype];
66 Seed.print('Invalid xtype: ' + o.xns + '.' + o.xtype);
68 this.el = isSeed ? new constructor(o) : new constructor();
70 // this might work for gjs!?
78 //if (o.xnsid && o.xid) {
79 // XObject.registry = XObject.registry || { };
80 // XObject.registry[o.xnsid] = XObject.registry[o.xnsid] || {};
81 // XObject.registry[o.xnsid][o.xid] = this;
84 cfg.items.forEach(this.addItem, this);
86 for (var i in this.listeners) {
87 this.addListener(i, this.listeners[i]);
89 // delete this.listeners ?
92 // do we need to call 'init here?'
100 * @property el {GObject} the Gtk / etc. element.
104 * @property items {Array} list of sub elements
107 * @property parent {XObject} parent Element
111 * Adds an item to the object using a new XObject
112 * uses pack property to determine how to add it.
113 * @arg cfg {Object} same as XObject constructor.
115 addItem : function(o) {
116 var item = new XObject(o);
118 this.items.push(item);
121 if (typeof(item.pack) == 'function') {
123 item.pack.apply(o, [ o , o.items[i] ]);
129 var pack_m = typeof(item.pack) == 'string' ? item.pack : item.pack.shift();
132 if (pack_m && typeof(o.el[pack_m]) == 'undefined') {
133 Seed.print('pack method not available : ' + o.xtype + '.' + pack_m);
138 //Seed.print('Pack ' + o.xtype + '.'+ pack_m + '(' + o.items[i].xtype + ')');
140 var args = Array.prototype.slice.call(typeof(item.pack) == 'string' ? [] : item.pack);
141 item.pack.unshift(item.el);
142 //Seed.print('args: ' + args.length);
144 this.el[pack_m].apply(item.el, args);
151 * @method addListener
152 * Connects a method to a signal. (gjs/Seed aware)
154 * @arg sig {String} name of signal
155 * @arg fn {Function} handler.
157 addListener : function(sig, fn) {
159 var _li = XObject.createDelegate(fn,this);
160 // private listeners that are not copied to GTk.
162 if (typeof(Seed) != 'undefined') {
163 // Seed.print(typeof(_li));
164 this.el.signal[sig].connect(_li);
166 this.el.connect( sig, _li);
173 * Finds an object in the child elements using xid of object.
175 * @arg name {String} name of signal
176 * @return {XObject|false} the object if found.
181 this.items.each(function(ch) {
191 this.items.each(function(ch) {
205 * Copies all the properties of config to obj.
207 * Pretty much the same as JQuery/Prototype..
208 * @param {Object} obj The receiver of the properties
209 * @param {Object} config The source of the properties
210 * @param {Object} defaults A different object that will also be applied for default values
211 * @return {Object} returns obj
212 * @member XObject extend
216 XObject.extend : function(o, c, defaults){
218 // no "this" reference for friendly out of scope calls
219 XObject.extend(o, defaults);
221 if(o && c && typeof c == 'object'){
229 XObject.extend(XObject,
232 * Copies all the properties of config to obj, if the do not exist.
233 * @param {Object} obj The receiver of the properties
234 * @param {Object} config The source of the properties
235 * @return {Object} returns obj
236 * @member Object extendIf
240 extendIf : function(o, c){
242 if(!o || !c || typeof c != 'object'){
246 if (typeof(o[p]) != 'undefined') {
257 * Extends one class with another class and optionally overrides members with the passed literal. This class
258 * also adds the function "override()" to the class that can be used to override
259 * members on an instance.
262 * MyObject = Object.define(
266 * parentClass, // or Object
268 * ... methods and properties.
271 * @param {Function} constructor The class inheriting the functionality
272 * @param {Object} superclass The class being extended
273 * @param {Object} overrides (optional) A literal with members
274 * @return {Function} constructor (eg. class
279 var io = function(o){
284 return function(sb, sp, overrides) {
285 if (typeof(sp) == 'undefined') {
286 // error condition - try and dump..
287 throw "Missing superclass: when applying: " + sb
290 var F = function(){}, sbp, spp = sp.prototype;
292 sbp = sb.prototype = new F();
297 if(spp.constructor == Object.prototype.constructor){
301 sb.override = function(o){
302 Object.extend(sb.prototype, o);
305 Object.extend(sb.prototype, overrides);
312 * returns a list of keys of the object.
313 * @param {Object} obj object to inspect
314 * @return {Array} returns list of kyes
315 * @member Object keys