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 // gjs does not like properties that do not exist..
212 var li = this.config.listeners;
213 delete this.config['listeners'];
216 this.el = new (this.xtype)(this.config);
218 print(JSON.stringify(e,null,4));
219 print(JSON.stringify(this.config,null,4));
223 name: "ArgumentError",
224 message :"Error creating object from xtype(object)"
231 if (!this.el && this.xns) {
233 var NS = imports.gi[this.xns];
235 XObject.error('Invalid xns: ' + this.xns, true);
237 constructor = NS[this.xtype];
239 XObject.error('Invalid xtype: ' + this.xns + '.' + this.xtype);
241 this.el = isSeed ? new constructor(this.config) : new constructor();
244 XObject.log("init: ID:"+ this.id +" typeof(el):" + this.el);
246 // always overlay props..
247 // check for 'write' on object..
249 if (typeof(XObject.writeablePropsCache[this.xtype.type]) == 'undefined') {
251 var gi = GIRepository.IRepository.get_default();
252 var ty = gi.find_by_gtype(this.xtype.type);
254 for (var i =0; i < GIRepository.object_info_get_n_properties(ty);i++) {
255 var p = GIRepository.object_info_get_property(ty,i);
256 if (GIRepository.property_info_get_flags(p) & 2) {
257 write.push(GIRepository.base_info_get_name(p));
260 XObject.writeablePropsCache[this.xtype.type] = write;
261 print(write.join(", "));
267 for (var i in this.config) {
268 if (i == 'type') { // problem with Gtk.Window... - not decided on a better way to handle this.
271 if (i == 'buttons') { // problem with Gtk.MessageDialog..
274 if (i[0] == '.') { // parent? -
277 this.el[i] = this.config[i];
281 //if (o.xnsid && o.id) {
282 // XObject.registry = XObject.registry || { };
283 // XObject.registry[o.xnsid] = XObject.registry[o.xnsid] || {};
284 // XObject.registry[o.xnsid][o.id] = this;
287 var type = this.xtype && this.xtype.type ? GObject.type_name(this.xtype.type) : '';
288 XObject.log("add children to " + type);
291 for (var i = 0; i < this.items.length;i++) {
292 _this.addItem(this.items[i],i);
296 for (var i in this.listeners) {
297 this.addListener(i, this.listeners[i]);
300 this.init = XObject.emptyFn;
302 // delete this.listeners ?
303 // do again so child props work!
305 // do we need to call 'init here?'
310 * Adds an item to the object using a new XObject
311 * uses pack property to determine how to add it.
312 * @arg cfg {Object} same as XObject constructor.
314 addItem : function(item, pos)
317 if (typeof(item) == 'undefined') {
318 XObject.error("Invalid Item added to this!");
319 imports.console.dump(this.cfg);
322 // what about extended items!?!?!?
325 //print("CTR:PROTO:" + ( item.id ? item.id : '??'));
326 // print("addItem - call init [" + item.pack.join(',') + ']');
328 XObject.error("NO EL!");
329 imports.console.dump(item);
332 XObject.log(XObject.type(this.xtype) + ":pack=" + item.pack);
334 if (item.pack===false) { // no packing.. various items have this ..
338 if (typeof(item.pack) == 'function') { // pack is a function..
340 item.pack.apply(item, [ this , item ]);
348 if (typeof(item.pack) == 'string') {
350 item.pack.split(',').forEach(function(e, i) {
352 if (e == 'false') { args.push( false); return; }
353 if (e == 'true') { args.push( true); return; }
354 if (!isNaN(parseInt(e))) { args.push( parseInt(e)); return; }
357 //print(args.join(","));
359 pack_m = args.shift();
361 pack_m = item.pack.shift();
366 if (pack_m && typeof(this.el[pack_m]) == 'undefined') {
369 name: "ArgumentError",
370 message : 'pack method not available : ' + this.id + " : " + this.xtype + '.' + pack_m + " ADDING " + item.el
378 // finally call the pack method
379 //Seed.print('Pack ' + this.el + '.'+ pack_m + '(' + item.el + ')');
381 args.unshift(item.el);
387 XObject.log(pack_m + '[' + args.join(',') +']');
388 //Seed.print('args: ' + args.length);
390 this.el[pack_m].apply(this.el, args);
397 * Connects a method to a signal. (gjs/Seed aware)
399 * @param {String} sig name of signal
400 * @param {Function} fn handler.
402 addListener : function(sig, fn)
405 XObject.log("Add signal " + sig);
407 var _li = XObject.createDelegate(fn,this);
408 // private listeners that are not copied to GTk.
411 print('missing el?');
413 print(JSON.stringify(this.cfg));
417 if (typeof(Seed) != 'undefined') {
418 // Seed.print(typeof(_li));
419 this.el.signal[sig].connect(_li);
421 this.el.connect( sig, _li);
428 * Finds an object in the child elements using xid of object.
429 * prefix with '.' to look up the tree..
430 * prefix with multiple '..' to look further up..
431 * prefix with '/' to look from the top, eg. '^LeftTree.model'
433 * @param {String} name name of signal
434 * @return {XObject|false} the object if found.
438 XObject.log("SEARCH FOR " + xid + " in " + this.id);
443 name: "ArgumentError",
444 message : "ID not found : empty id"
449 return this.parent.get(xid.substring(1));
453 if (typeof(XObject.cache[xid]) != 'undefined') {
454 return XObject.cache[xid];
456 if (xid.indexOf('.') > -1) {
458 var child = xid.split('.');
459 var nxid = child.shift();
461 child = child.join('.');
462 if (typeof(XObject.cache[nxid]) != 'undefined') {
463 return XObject.cache[nxid].get(child);
474 ret = e.get(xid.substring(1));
479 name: "ArgumentError",
480 message : "ID not found : " + oid
483 XObject.cache[xid] = ret;
484 return XObject.cache[xid];
488 if (xid.indexOf('.') > -1) {
489 child = xid.split('.');
492 child = child.join('.');
495 if (xid == this.id) {
497 return child === false ? this : this.get(child);
500 name: "ArgumentError",
501 message : "ID not found : " + oid
508 this.items.forEach(function(ch) {
518 return child === false ? ret : ret.get(child);
521 name: "ArgumentError",
522 message : "ID not found : " + oid
529 this.items.forEach(function(ch) {
534 XObject.error("invalid item...");
535 imports.console.dump(_this);
546 name: "ArgumentError",
547 message : "ID not found : " + oid
551 return child === false ? ret : ret.get(child);
554 name: "ArgumentError",
555 message : "ID not found : " + oid
565 * Copies all the properties of config to obj.
567 * Pretty much the same as JQuery/Prototype.. or Roo.apply
568 * @param {Object} obj The receiver of the properties
569 * @param {Object} config The source of the properties
570 * @param {Object} defaults A different object that will also be applied for default values
571 * @return {Object} returns obj
572 * @member XObject extend
576 XObject.extend = function(o, c, defaults){
578 // no "this" reference for friendly out of scope calls
579 XObject.extend(o, defaults);
581 if(o && c && typeof c == 'object'){
589 XObject.extend(XObject,
593 * @property {Boolean} debug XObject debugging. - set to true to debug.
598 * @property {Object} cache - cache of object ids
606 emptyFn : function () { },
612 * @param {String|Object} output String to print.
614 log : function(output)
619 print("LOG:" + output);
624 * @param {String|Object} output String to print.
626 error : function(output)
628 print("ERROR: " + output);
632 * @param {String|Object} output String to print.
634 fatal : function(output)
638 name: "ArgumentError",
645 * Copies all the properties of config to obj, if the do not exist.
646 * @param {Object} obj The receiver of the properties
647 * @param {Object} config The source of the properties
648 * @return {Object} returns obj
649 * @member Object extendIf
653 extendIf : function(o, c)
656 if(!o || !c || typeof c != 'object'){
660 if (typeof(o[p]) != 'undefined') {
671 * Extends one class with another class and optionally overrides members with the passed literal. This class
672 * also adds the function "override()" to the class that can be used to override
673 * members on an instance.
676 * MyObject = Object.define(
680 * parentClass, // or Object
682 * ... methods and properties.
685 * @param {Function} constructor The class inheriting the functionality
686 * @param {Object} superclass The class being extended
687 * @param {Object} overrides (optional) A literal with members
688 * @return {Function} constructor (eg. class
694 var io = function(o){
699 return function(constructor, parentClass, overrides) {
700 if (typeof(parentClass) == 'undefined') {
701 XObject.error("XObject.define: Missing parentClass: when applying: " );
702 XObject.error(new String(constructor));
705 if (typeof(parentClass.prototype) == 'undefined') {
706 XObject.error("Missing protype: when applying: " );
707 XObject.error(new String(constructor));
708 XObject.error(new String(parentClass));
711 var F = function(){};
713 var spp = parentClass.prototype;
716 sbp = constructor.prototype = new F();
717 sbp.constructor=constructor;
718 constructor.superclass=spp;
721 if(spp.constructor == Object.prototype.constructor){
722 spp.constructor=parentClass;
725 constructor.override = function(o){
726 Object.extend(constructor.prototype, o);
729 XObject.extend(constructor.prototype, overrides);
736 * returns a list of keys of the object.
737 * @param {Object} obj object to inspect
738 * @return {Array} returns list of kyes
739 * @member XObject keys
750 * return the Gobject name of a constructor - does not appear to work on structs..
751 * @param {Object} gobject ctr
752 * @return {String} returns name
753 * @member XObject type
757 if (typeof(o) == 'object') {
758 return GObject.type_name(o.type);
759 // print("GNAME:" +gname + " GTYPE:"+cfg.xtype.type);
764 * return the XObjectBase class for a cfg (which includes an xtype)
765 * @param {Object} configuration.
766 * @return {function} constructor
767 * @member XObject baseXObject
769 baseXObject : function(cfg)
772 // loocks for XObject/Gtk/TreeView.js [ TreeView = { .... } ]
773 // xns is not a string!!!?
775 if (typeof(cfg.xtype) == 'object') {
776 gname = XObject.type(cfg.xtype);
779 if (typeof(cfg.xtype) == 'string') {
783 XObject.log("TRYING BASE OBJECT : " + gname);
785 // in the situation where we have been called and there is a base object
786 // defining the behavior..
787 // then we should copy the prototypes from the base object into this..
789 // see if file exists???
791 var base = gname ? imports.XObjectBase[gname][gname] : false;
796 XObject.log("error finding " + gname + " - " + e.toString());
804 * @member XObject createDelegate
805 * creates a delage metdhod
806 * @param {Function} method to wrap
807 * @param {Object} scope
808 * @param {Array} args to add
809 * @param {Boolean|Number} append arguments or replace after N arguments.
810 * @return {Function} returns the delegate
813 createDelegate : function(method, obj, args, appendArgs){
816 XObject.log("CALL: " + obj.id + ':'+ method.id);
818 var callArgs = args || arguments;
819 if(appendArgs === true){
820 callArgs = Array.prototype.slice.call(arguments, 0);
821 callArgs = callArgs.concat(args);
822 }else if(typeof appendArgs == "number"){
823 callArgs = Array.prototype.slice.call(arguments, 0); // copy arguments first
824 var applyArgs = [appendArgs, 0].concat(args); // create method call params
825 Array.prototype.splice.apply(callArgs, applyArgs); // splice them in
827 return method.apply(obj || window, callArgs);