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));
194 if (!this.el && typeof(this.xtype) == 'function') {
195 XObject.log("func?" + XObject.keys(this.config).join(','));
196 this.el = this.xtype(this.config);
199 if (!this.el && typeof(this.xtype) == 'object') {
201 XObject.log("obj?" + XObject.keys(this.config).join(','));
203 this.el = new (this.xtype)(this.config);
205 print(JSON.stringify(e,null,4));
206 print(JSON.stringify(this.config,null,4));
210 name: "ArgumentError",
211 message :"Error creating object from xtype(object)"
218 if (!this.el && this.xns) {
220 var NS = imports.gi[this.xns];
222 XObject.error('Invalid xns: ' + this.xns, true);
224 constructor = NS[this.xtype];
226 XObject.error('Invalid xtype: ' + this.xns + '.' + this.xtype);
228 this.el = isSeed ? new constructor(this.config) : new constructor();
231 XObject.log("init: ID:"+ this.id +" typeof(el):" + this.el);
233 // always overlay props..
234 // check for 'write' on object..
236 if (typeof(XObject.writeablePropsCache[this.xtype.type]) == 'undefined') {
238 var gi = GIRepository.IRepository.get_default();
239 var ty = gi.find_by_gtype(this.xtype.type);
241 for (var i =0; i < GIRepository.object_info_get_n_properties(ty);i++) {
242 var p = GIRepository.object_info_get_property(ty,i);
243 if (GIRepository.property_info_get_flags(p) & 2) {
244 write.push(GIRepository.base_info_get_name(p));
247 XObject.writeablePropsCache[this.xtype.type] = write;
248 print(write.join(", "));
254 for (var i in this.config) {
255 if (i == 'type') { // problem with Gtk.Window... - not decided on a better way to handle this.
258 if (i == 'buttons') { // problem with Gtk.MessageDialog..
261 if (i[0] == '.') { // parent? -
264 this.el[i] = this.config[i];
268 //if (o.xnsid && o.id) {
269 // XObject.registry = XObject.registry || { };
270 // XObject.registry[o.xnsid] = XObject.registry[o.xnsid] || {};
271 // XObject.registry[o.xnsid][o.id] = this;
274 var type = this.xtype && this.xtype.type ? GObject.type_name(this.xtype.type) : '';
275 XObject.log("add children to " + type);
278 for (var i = 0; i < this.items.length;i++) {
279 _this.addItem(this.items[i],i);
283 for (var i in this.listeners) {
284 this.addListener(i, this.listeners[i]);
287 this.init = XObject.emptyFn;
289 // delete this.listeners ?
290 // do again so child props work!
292 // do we need to call 'init here?'
297 * Adds an item to the object using a new XObject
298 * uses pack property to determine how to add it.
299 * @arg cfg {Object} same as XObject constructor.
301 addItem : function(item, pos)
304 if (typeof(item) == 'undefined') {
305 XObject.error("Invalid Item added to this!");
306 imports.console.dump(this.cfg);
309 // what about extended items!?!?!?
312 //print("CTR:PROTO:" + ( item.id ? item.id : '??'));
313 // print("addItem - call init [" + item.pack.join(',') + ']');
315 XObject.error("NO EL!");
316 imports.console.dump(item);
319 XObject.log(XObject.type(this.xtype) + ":pack=" + item.pack);
321 if (item.pack===false) { // no packing.. various items have this ..
325 if (typeof(item.pack) == 'function') { // pack is a function..
327 item.pack.apply(item, [ this , item ]);
335 if (typeof(item.pack) == 'string') {
337 item.pack.split(',').forEach(function(e, i) {
339 if (e == 'false') { args.push( false); return; }
340 if (e == 'true') { args.push( true); return; }
341 if (!isNaN(parseInt(e))) { args.push( parseInt(e)); return; }
344 //print(args.join(","));
346 pack_m = args.shift();
348 pack_m = item.pack.shift();
353 if (pack_m && typeof(this.el[pack_m]) == 'undefined') {
356 name: "ArgumentError",
357 message : 'pack method not available : ' + this.id + " : " + this.xtype + '.' + pack_m + " ADDING " + item.el
365 // finally call the pack method
366 //Seed.print('Pack ' + this.el + '.'+ pack_m + '(' + item.el + ')');
368 args.unshift(item.el);
374 XObject.log(pack_m + '[' + args.join(',') +']');
375 //Seed.print('args: ' + args.length);
377 this.el[pack_m].apply(this.el, args);
384 * Connects a method to a signal. (gjs/Seed aware)
386 * @param {String} sig name of signal
387 * @param {Function} fn handler.
389 addListener : function(sig, fn)
392 XObject.log("Add signal " + sig);
394 var _li = XObject.createDelegate(fn,this);
395 // private listeners that are not copied to GTk.
398 print('missing el?');
400 print(JSON.stringify(this.cfg));
404 if (typeof(Seed) != 'undefined') {
405 // Seed.print(typeof(_li));
406 this.el.signal[sig].connect(_li);
408 this.el.connect( sig, _li);
415 * Finds an object in the child elements using xid of object.
416 * prefix with '.' to look up the tree..
417 * prefix with multiple '..' to look further up..
418 * prefix with '/' to look from the top, eg. '^LeftTree.model'
420 * @param {String} name name of signal
421 * @return {XObject|false} the object if found.
425 XObject.log("SEARCH FOR " + xid + " in " + this.id);
430 name: "ArgumentError",
431 message : "ID not found : empty id"
436 return this.parent.get(xid.substring(1));
440 if (typeof(XObject.cache[xid]) != 'undefined') {
441 return XObject.cache[xid];
443 if (xid.indexOf('.') > -1) {
445 var child = xid.split('.');
446 var nxid = child.shift();
448 child = child.join('.');
449 if (typeof(XObject.cache[nxid]) != 'undefined') {
450 return XObject.cache[nxid].get(child);
461 ret = e.get(xid.substring(1));
466 name: "ArgumentError",
467 message : "ID not found : " + oid
470 XObject.cache[xid] = ret;
471 return XObject.cache[xid];
475 if (xid.indexOf('.') > -1) {
476 child = xid.split('.');
479 child = child.join('.');
482 if (xid == this.id) {
484 return child === false ? this : this.get(child);
487 name: "ArgumentError",
488 message : "ID not found : " + oid
495 this.items.forEach(function(ch) {
505 return child === false ? ret : ret.get(child);
508 name: "ArgumentError",
509 message : "ID not found : " + oid
516 this.items.forEach(function(ch) {
521 XObject.error("invalid item...");
522 imports.console.dump(_this);
533 name: "ArgumentError",
534 message : "ID not found : " + oid
538 return child === false ? ret : ret.get(child);
541 name: "ArgumentError",
542 message : "ID not found : " + oid
552 * Copies all the properties of config to obj.
554 * Pretty much the same as JQuery/Prototype.. or Roo.apply
555 * @param {Object} obj The receiver of the properties
556 * @param {Object} config The source of the properties
557 * @param {Object} defaults A different object that will also be applied for default values
558 * @return {Object} returns obj
559 * @member XObject extend
563 XObject.extend = function(o, c, defaults){
565 // no "this" reference for friendly out of scope calls
566 XObject.extend(o, defaults);
568 if(o && c && typeof c == 'object'){
576 XObject.extend(XObject,
580 * @property {Boolean} debug XObject debugging. - set to true to debug.
585 * @property {Object} cache - cache of object ids
593 emptyFn : function () { },
599 * @param {String|Object} output String to print.
601 log : function(output)
606 print("LOG:" + output);
611 * @param {String|Object} output String to print.
613 error : function(output)
615 print("ERROR: " + output);
619 * @param {String|Object} output String to print.
621 fatal : function(output)
625 name: "ArgumentError",
632 * Copies all the properties of config to obj, if the do not exist.
633 * @param {Object} obj The receiver of the properties
634 * @param {Object} config The source of the properties
635 * @return {Object} returns obj
636 * @member Object extendIf
640 extendIf : function(o, c)
643 if(!o || !c || typeof c != 'object'){
647 if (typeof(o[p]) != 'undefined') {
658 * Extends one class with another class and optionally overrides members with the passed literal. This class
659 * also adds the function "override()" to the class that can be used to override
660 * members on an instance.
663 * MyObject = Object.define(
667 * parentClass, // or Object
669 * ... methods and properties.
672 * @param {Function} constructor The class inheriting the functionality
673 * @param {Object} superclass The class being extended
674 * @param {Object} overrides (optional) A literal with members
675 * @return {Function} constructor (eg. class
681 var io = function(o){
686 return function(constructor, parentClass, overrides) {
687 if (typeof(parentClass) == 'undefined') {
688 XObject.error("XObject.define: Missing parentClass: when applying: " );
689 XObject.error(new String(constructor));
692 if (typeof(parentClass.prototype) == 'undefined') {
693 XObject.error("Missing protype: when applying: " );
694 XObject.error(new String(constructor));
695 XObject.error(new String(parentClass));
698 var F = function(){};
700 var spp = parentClass.prototype;
703 sbp = constructor.prototype = new F();
704 sbp.constructor=constructor;
705 constructor.superclass=spp;
708 if(spp.constructor == Object.prototype.constructor){
709 spp.constructor=parentClass;
712 constructor.override = function(o){
713 Object.extend(constructor.prototype, o);
716 XObject.extend(constructor.prototype, overrides);
723 * returns a list of keys of the object.
724 * @param {Object} obj object to inspect
725 * @return {Array} returns list of kyes
726 * @member XObject keys
737 * return the Gobject name of a constructor - does not appear to work on structs..
738 * @param {Object} gobject ctr
739 * @return {String} returns name
740 * @member XObject type
744 if (typeof(o) == 'object') {
745 return GObject.type_name(o.type);
746 // print("GNAME:" +gname + " GTYPE:"+cfg.xtype.type);
751 * return the XObjectBase class for a cfg (which includes an xtype)
752 * @param {Object} configuration.
753 * @return {function} constructor
754 * @member XObject baseXObject
756 baseXObject : function(cfg)
759 // loocks for XObject/Gtk/TreeView.js [ TreeView = { .... } ]
760 // xns is not a string!!!?
762 if (typeof(cfg.xtype) == 'object') {
763 gname = XObject.type(cfg.xtype);
766 if (typeof(cfg.xtype) == 'string') {
770 XObject.log("TRYING BASE OBJECT : " + gname);
772 // in the situation where we have been called and there is a base object
773 // defining the behavior..
774 // then we should copy the prototypes from the base object into this..
776 // see if file exists???
778 var base = gname ? imports.XObjectBase[gname][gname] : false;
783 XObject.log("error finding " + gname + " - " + e.toString());
791 * @member XObject createDelegate
792 * creates a delage metdhod
793 * @param {Function} method to wrap
794 * @param {Object} scope
795 * @param {Array} args to add
796 * @param {Boolean|Number} append arguments or replace after N arguments.
797 * @return {Function} returns the delegate
800 createDelegate : function(method, obj, args, appendArgs){
803 XObject.log("CALL: " + obj.id + ':'+ method.id);
805 var callArgs = args || arguments;
806 if(appendArgs === true){
807 callArgs = Array.prototype.slice.call(arguments, 0);
808 callArgs = callArgs.concat(args);
809 }else if(typeof appendArgs == "number"){
810 callArgs = Array.prototype.slice.call(arguments, 0); // copy arguments first
811 var applyArgs = [appendArgs, 0].concat(args); // create method call params
812 Array.prototype.splice.apply(callArgs, applyArgs); // splice them in
814 return method.apply(obj || window, callArgs);