1 //<script type="text/javascript">
2 GIRepository = imports.gi.GIRepository;
3 GObject = imports.gi.GObject;
6 * Yet another attempt to create a usable object construction library for seed..
9 * A) It turns rather messy code into a tree structure, making it easy to find code relating to
10 * an interface element
11 * B) In theory it should be gjs/Seed compatible..
12 * C) It provides getElementById style lookups for elements.
13 * D) It provides classic OO constructors for Javascript (extend/define)
14 * E) It does not modify any buildin prototypes..
16 * Extend this.. to use it's wonderful features..
19 * XObject = imports.XObject.XObject;
28 * Xyz.init(); // create and show.
31 * use XObject.debug = 1 to turn on debugging
33 * If XObjectBase/[xns]/[xtype].js exists, it will use this to override properties..
36 * He's some questions.
37 * - should we have a special property to use as the constructor / gobject.properties rather
38 * than sending all basic types to this?
40 * @cfg xtype {String|Function} constructor or string.
41 * @cfg id {String} (optional) id for registry
42 * @cfg xns {String|Object} (optional) namespace eg. Gtk or 'Gtk' - used with xtype.
43 * @cfg items {Array} (optional) list of child elements which will be constructed.. using XObject
44 * @cfg listeners {Object} (optional) map Gobject signals to functions
45 * @cfg pack {Function|String|Array} (optional) how this object gets added to it's parent
46 * @cfg el {Object} (optional) premade GObject
50 function XObject (cfg) {
51 // first apply cfg if set.
52 //print("new XOBJECT!!!");
54 //print ("XObject ctr");
56 this.config = {}; // used to initialize GObject
58 this.cfg = XObject.extend({}, cfg); // used to store original configuration.. for referencing..
60 // used by baseobject to create fake child elements on init..
65 // we could use this to determine if
66 // we are actually inside a inherited class...
67 // as define() should actually set this up..
69 if (!this.constructor) {
71 this.constructor = XObject;
72 var base = XObject.baseXObject(cfg);
74 XObject.extend(this, base.prototype);
79 // copy down all elements into self..
80 // make an extra copy in this.config?? - which is the one used in the constructor later
84 if (typeof(cfg[i]) == 'function') { // do we skip objects.
87 // these properties are not copied to cfg.
98 this.config[i] = cfg[i];
102 this.items = this.items || [];
105 // pack can be false!
106 if (typeof(this.pack) == 'undefined') {
108 this.pack = [ 'add' ]
110 var Gtk = imports.gi.Gtk;
113 case (this.xtype == Gtk.MenuItem): this.pack = [ 'append' ]; break;
120 // interesting question should we call constructor on items here...
121 // as the real work is done in init anyway..
125 for(var i = 0; i < this.items.length;i++) {
126 items.push(this.items[i]);
132 // create XObject for all the children.
133 for(var i = 0; i < items.length;i++) {
135 var base = XObject.baseXObject(items[i]);
136 base = base || XObject;
137 var item = (items[i].constructor == XObject) ? items[i] : new base(items[i]);
139 _this.items.push(item);
148 XObject.prototype = {
150 * @property el {GObject} the Gtk / etc. element.
154 * @property items {Array} list of sub elements
157 * @property parent {XObject} parent Element
161 * @property config {Object} the construction configuration.
165 * Initializes the Element (el) hooks up all the listeners
166 * and packs the children.
167 * you can override this, in child objects, then
168 * do this to do thi initaliztion.
170 * XObject.prototype.init.call(this);
173 init : function(parent)
177 //this.items.forEach(function(i) {
181 this.listeners = this.listeners || {};
184 // do we need to call 'beforeInit here?'
187 //if ((this.xtype == 'Include')) {
188 // o = this.pre_registry[cls];
190 var isSeed = typeof(Seed) != 'undefined';
192 // xtype= Gtk.Menu ?? what about c_new stuff?
193 XObject.log("init: ID:"+ this.id +" typeof(xtype): " + typeof(this.xtype));
195 var xtypeof = isSeed ? typeof(this.xtype) :
196 // oterhwise it's gjs, which case ctors are functions, not objects...
197 ( typeof(this.xtype) == 'function' ? 'object' : typeof(this.xtype) );
199 if (!this.el && xtypeof == 'function') {
200 XObject.log("func?" + XObject.keys(this.config).join(','));
201 this.el = this.xtype(this.config);
204 if (!this.el && xtypeof == 'object') {
206 XObject.log("obj?" + XObject.keys(this.config).join(','));
209 var li = this.config.listeners;
210 delete this.config['listeners'];
213 this.el = new (this.xtype)(this.config);
215 print(JSON.stringify(e,null,4));
216 print(JSON.stringify(this.config,null,4));
220 name: "ArgumentError",
221 message :"Error creating object from xtype(object)"
228 if (!this.el && this.xns) {
230 var NS = imports.gi[this.xns];
232 XObject.error('Invalid xns: ' + this.xns, true);
234 constructor = NS[this.xtype];
236 XObject.error('Invalid xtype: ' + this.xns + '.' + this.xtype);
238 this.el = isSeed ? new constructor(this.config) : new constructor();
241 XObject.log("init: ID:"+ this.id +" typeof(el):" + this.el);
243 // always overlay props..
244 // check for 'write' on object..
246 if (typeof(XObject.writeablePropsCache[this.xtype.type]) == 'undefined') {
248 var gi = GIRepository.IRepository.get_default();
249 var ty = gi.find_by_gtype(this.xtype.type);
251 for (var i =0; i < GIRepository.object_info_get_n_properties(ty);i++) {
252 var p = GIRepository.object_info_get_property(ty,i);
253 if (GIRepository.property_info_get_flags(p) & 2) {
254 write.push(GIRepository.base_info_get_name(p));
257 XObject.writeablePropsCache[this.xtype.type] = write;
258 print(write.join(", "));
264 for (var i in this.config) {
265 if (i == 'type') { // problem with Gtk.Window... - not decided on a better way to handle this.
268 if (i == 'buttons') { // problem with Gtk.MessageDialog..
271 if (i[0] == '.') { // parent? -
274 this.el[i] = this.config[i];
278 //if (o.xnsid && o.id) {
279 // XObject.registry = XObject.registry || { };
280 // XObject.registry[o.xnsid] = XObject.registry[o.xnsid] || {};
281 // XObject.registry[o.xnsid][o.id] = this;
284 var type = this.xtype && this.xtype.type ? GObject.type_name(this.xtype.type) : '';
285 XObject.log("add children to " + type);
288 for (var i = 0; i < this.items.length;i++) {
289 _this.addItem(this.items[i],i);
293 for (var i in this.listeners) {
294 this.addListener(i, this.listeners[i]);
297 this.init = XObject.emptyFn;
299 // delete this.listeners ?
300 // do again so child props work!
302 // do we need to call 'init here?'
307 * Adds an item to the object using a new XObject
308 * uses pack property to determine how to add it.
309 * @arg cfg {Object} same as XObject constructor.
311 addItem : function(item, pos)
314 if (typeof(item) == 'undefined') {
315 XObject.error("Invalid Item added to this!");
316 imports.console.dump(this.cfg);
319 // what about extended items!?!?!?
322 //print("CTR:PROTO:" + ( item.id ? item.id : '??'));
323 // print("addItem - call init [" + item.pack.join(',') + ']');
325 XObject.error("NO EL!");
326 imports.console.dump(item);
329 XObject.log(XObject.type(this.xtype) + ":pack=" + item.pack);
331 if (item.pack===false) { // no packing.. various items have this ..
335 if (typeof(item.pack) == 'function') { // pack is a function..
337 item.pack.apply(item, [ this , item ]);
345 if (typeof(item.pack) == 'string') {
347 item.pack.split(',').forEach(function(e, i) {
349 if (e == 'false') { args.push( false); return; }
350 if (e == 'true') { args.push( true); return; }
351 if (!isNaN(parseInt(e))) { args.push( parseInt(e)); return; }
354 //print(args.join(","));
356 pack_m = args.shift();
358 pack_m = item.pack.shift();
363 if (pack_m && typeof(this.el[pack_m]) == 'undefined') {
366 name: "ArgumentError",
367 message : 'pack method not available : ' + this.id + " : " + this.xtype + '.' + pack_m + " ADDING " + item.el
375 // finally call the pack method
376 //Seed.print('Pack ' + this.el + '.'+ pack_m + '(' + item.el + ')');
378 args.unshift(item.el);
384 XObject.log(pack_m + '[' + args.join(',') +']');
385 //Seed.print('args: ' + args.length);
387 this.el[pack_m].apply(this.el, args);
394 * Connects a method to a signal. (gjs/Seed aware)
396 * @param {String} sig name of signal
397 * @param {Function} fn handler.
399 addListener : function(sig, fn)
402 XObject.log("Add signal " + sig);
404 var _li = XObject.createDelegate(fn,this);
405 // private listeners that are not copied to GTk.
408 print('missing el?');
410 print(JSON.stringify(this.cfg));
414 if (typeof(Seed) != 'undefined') {
415 // Seed.print(typeof(_li));
416 this.el.signal[sig].connect(_li);
418 this.el.connect( sig, _li);
425 * Finds an object in the child elements using xid of object.
426 * prefix with '.' to look up the tree..
427 * prefix with multiple '..' to look further up..
428 * prefix with '/' to look from the top, eg. '^LeftTree.model'
430 * @param {String} name name of signal
431 * @return {XObject|false} the object if found.
435 XObject.log("SEARCH FOR " + xid + " in " + this.id);
440 name: "ArgumentError",
441 message : "ID not found : empty id"
446 return this.parent.get(xid.substring(1));
450 if (typeof(XObject.cache[xid]) != 'undefined') {
451 return XObject.cache[xid];
453 if (xid.indexOf('.') > -1) {
455 var child = xid.split('.');
456 var nxid = child.shift();
458 child = child.join('.');
459 if (typeof(XObject.cache[nxid]) != 'undefined') {
460 return XObject.cache[nxid].get(child);
471 ret = e.get(xid.substring(1));
476 name: "ArgumentError",
477 message : "ID not found : " + oid
480 XObject.cache[xid] = ret;
481 return XObject.cache[xid];
485 if (xid.indexOf('.') > -1) {
486 child = xid.split('.');
489 child = child.join('.');
492 if (xid == this.id) {
494 return child === false ? this : this.get(child);
497 name: "ArgumentError",
498 message : "ID not found : " + oid
505 this.items.forEach(function(ch) {
515 return child === false ? ret : ret.get(child);
518 name: "ArgumentError",
519 message : "ID not found : " + oid
526 this.items.forEach(function(ch) {
531 XObject.error("invalid item...");
532 imports.console.dump(_this);
543 name: "ArgumentError",
544 message : "ID not found : " + oid
548 return child === false ? ret : ret.get(child);
551 name: "ArgumentError",
552 message : "ID not found : " + oid
562 * Copies all the properties of config to obj.
564 * Pretty much the same as JQuery/Prototype.. or Roo.apply
565 * @param {Object} obj The receiver of the properties
566 * @param {Object} config The source of the properties
567 * @param {Object} defaults A different object that will also be applied for default values
568 * @return {Object} returns obj
569 * @member XObject extend
573 XObject.extend = function(o, c, defaults){
575 // no "this" reference for friendly out of scope calls
576 XObject.extend(o, defaults);
578 if(o && c && typeof c == 'object'){
586 XObject.extend(XObject,
590 * @property {Boolean} debug XObject debugging. - set to true to debug.
595 * @property {Object} cache - cache of object ids
603 emptyFn : function () { },
609 * @param {String|Object} output String to print.
611 log : function(output)
616 print("LOG:" + output);
621 * @param {String|Object} output String to print.
623 error : function(output)
625 print("ERROR: " + output);
629 * @param {String|Object} output String to print.
631 fatal : function(output)
635 name: "ArgumentError",
642 * Copies all the properties of config to obj, if the do not exist.
643 * @param {Object} obj The receiver of the properties
644 * @param {Object} config The source of the properties
645 * @return {Object} returns obj
646 * @member Object extendIf
650 extendIf : function(o, c)
653 if(!o || !c || typeof c != 'object'){
657 if (typeof(o[p]) != 'undefined') {
668 * Extends one class with another class and optionally overrides members with the passed literal. This class
669 * also adds the function "override()" to the class that can be used to override
670 * members on an instance.
673 * MyObject = Object.define(
677 * parentClass, // or Object
679 * ... methods and properties.
682 * @param {Function} constructor The class inheriting the functionality
683 * @param {Object} superclass The class being extended
684 * @param {Object} overrides (optional) A literal with members
685 * @return {Function} constructor (eg. class
691 var io = function(o){
696 return function(constructor, parentClass, overrides) {
697 if (typeof(parentClass) == 'undefined') {
698 XObject.error("XObject.define: Missing parentClass: when applying: " );
699 XObject.error(new String(constructor));
702 if (typeof(parentClass.prototype) == 'undefined') {
703 XObject.error("Missing protype: when applying: " );
704 XObject.error(new String(constructor));
705 XObject.error(new String(parentClass));
708 var F = function(){};
710 var spp = parentClass.prototype;
713 sbp = constructor.prototype = new F();
714 sbp.constructor=constructor;
715 constructor.superclass=spp;
718 if(spp.constructor == Object.prototype.constructor){
719 spp.constructor=parentClass;
722 constructor.override = function(o){
723 Object.extend(constructor.prototype, o);
726 XObject.extend(constructor.prototype, overrides);
733 * returns a list of keys of the object.
734 * @param {Object} obj object to inspect
735 * @return {Array} returns list of kyes
736 * @member XObject keys
747 * return the Gobject name of a constructor - does not appear to work on structs..
748 * @param {Object} gobject ctr
749 * @return {String} returns name
750 * @member XObject type
754 if (typeof(o) == 'object') {
755 return GObject.type_name(o.type);
756 // print("GNAME:" +gname + " GTYPE:"+cfg.xtype.type);
761 * return the XObjectBase class for a cfg (which includes an xtype)
762 * @param {Object} configuration.
763 * @return {function} constructor
764 * @member XObject baseXObject
766 baseXObject : function(cfg)
769 // loocks for XObject/Gtk/TreeView.js [ TreeView = { .... } ]
770 // xns is not a string!!!?
772 if (typeof(cfg.xtype) == 'object') {
773 gname = XObject.type(cfg.xtype);
776 if (typeof(cfg.xtype) == 'string') {
780 XObject.log("TRYING BASE OBJECT : " + gname);
782 // in the situation where we have been called and there is a base object
783 // defining the behavior..
784 // then we should copy the prototypes from the base object into this..
786 // see if file exists???
788 var base = gname ? imports.XObjectBase[gname][gname] : false;
793 XObject.log("error finding " + gname + " - " + e.toString());
801 * @member XObject createDelegate
802 * creates a delage metdhod
803 * @param {Function} method to wrap
804 * @param {Object} scope
805 * @param {Array} args to add
806 * @param {Boolean|Number} append arguments or replace after N arguments.
807 * @return {Function} returns the delegate
810 createDelegate : function(method, obj, args, appendArgs){
813 XObject.log("CALL: " + obj.id + ':'+ method.id);
815 var callArgs = args || arguments;
816 if(appendArgs === true){
817 callArgs = Array.prototype.slice.call(arguments, 0);
818 callArgs = callArgs.concat(args);
819 }else if(typeof appendArgs == "number"){
820 callArgs = Array.prototype.slice.call(arguments, 0); // copy arguments first
821 var applyArgs = [appendArgs, 0].concat(args); // create method call params
822 Array.prototype.splice.apply(callArgs, applyArgs); // splice them in
824 return method.apply(obj || window, callArgs);