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 XObject/[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
55 function XObject (cfg) {
56 // first apply cfg if set.
57 //print("new XOBJECT!!!");
59 //print ("XObject ctr");
62 this.constructor = XObject;
66 // start by seeing if we have a base class....
68 // loocks for XObject/Gtk/TreeView.js [ TreeView = { .... } ]
69 // xns is not a string!!!?
71 if (typeof(cfg.xtype) == 'object') {
72 gname = GObject.type_name(cfg.xtype.type);
73 // print("GNAME:" +gname + " GTYPE:"+cfg.xtype.type);
76 var base = gname ? imports.XObjectBase[gname][gname] : false;
78 // print("Overlaying XOBJBECT-BASE." + cfg.xtype);
79 XObject.extend(this,base);
84 XObject.log("error finding " + gname + " - " + e.toString());
88 // copy down all elements into self..
92 if (typeof(cfg[i]) == 'function') { // do we skip objects.
95 // these properties are not copied to cfg.
106 this.config[i] = cfg[i];
110 this.items = this.items || [];
113 // pack can be false!
114 if (typeof(this.pack) == 'undefined') {
116 this.pack = [ 'add' ]
118 var Gtk = imports.gi.Gtk;
121 case (this.xtype == Gtk.MenuItem): this.pack = [ 'append' ]; break;
128 // interesting question should we call constructor on items here...
129 // as the real work is done in init anyway..
133 this.items.forEach(function(i) {
137 // create XObject for all the children.
138 items.forEach(function(i,n) {
140 var item = (i.constructor == XObject) ? o : new XObject(i);
142 _this.items.push(item);
145 if (this.onConstruct) {
146 this.onConstruct.call(this);
153 XObject.prototype = {
155 * @property el {GObject} the Gtk / etc. element.
159 * @property items {Array} list of sub elements
162 * @property parent {XObject} parent Element
166 * @property config {Object} the construction configuration.
170 * Initializes the Element (el) hooks up all the listeners
171 * and packs the children.
172 * you can override this, in child objects, then
173 * do this to do thi initaliztion.
175 * XObject.prototype.init.call(this);
182 //this.items.forEach(function(i) {
186 this.listeners = this.listeners || {};
189 // do we need to call 'beforeInit here?'
192 //if ((this.xtype == 'Include')) {
193 // o = this.pre_registry[cls];
195 var isSeed = typeof(Seed) != 'undefined';
197 // xtype= Gtk.Menu ?? what about c_new stuff?
198 XObject.log("init: ID:"+ this.id +" typeof(xtype): " + typeof(this.xtype));
199 if (!this.el && typeof(this.xtype) == 'function') {
200 XObject.log("func?" + XObject.keys(this.config).join(','));
201 this.el = this.xtype(this.config);
204 if (!this.el && typeof(this.xtype) == 'object') {
205 XObject.log("obj?" + XObject.keys(this.config).join(','));
206 this.el = new (this.xtype)(this.config);
210 if (!this.el && this.xns) {
212 var NS = imports.gi[this.xns];
214 XObject.error('Invalid xns: ' + this.xns, true);
216 constructor = NS[this.xtype];
218 XObject.error('Invalid xtype: ' + this.xns + '.' + this.xtype);
220 this.el = isSeed ? new constructor(this.config) : new constructor();
223 XObject.log("init: ID:"+ this.id +" typeof(el):" + this.el);
225 // always overlay props..
226 // check for 'write' on object..
228 if (typeof(XObject.writeablePropsCache[this.xtype.type]) == 'undefined') {
230 var gi = GIRepository.IRepository.get_default();
231 var ty = gi.find_by_gtype(this.xtype.type);
233 for (var i =0; i < GIRepository.object_info_get_n_properties(ty);i++) {
234 var p = GIRepository.object_info_get_property(ty,i);
235 if (GIRepository.property_info_get_flags(p) & 2) {
236 write.push(GIRepository.base_info_get_name(p));
239 XObject.writeablePropsCache[this.xtype.type] = write;
240 print(write.join(", "));
246 for (var i in this.config) {
247 if (i == 'type') { // problem with Gtk.Window... - not decided on a better way to handle this.
250 if (i == 'buttons') { // problem with Gtk.MessageDialog..
253 if (i[0] == '.') { // parent? -
256 this.el[i] = this.config[i];
260 //if (o.xnsid && o.id) {
261 // XObject.registry = XObject.registry || { };
262 // XObject.registry[o.xnsid] = XObject.registry[o.xnsid] || {};
263 // XObject.registry[o.xnsid][o.id] = this;
266 var type = this.xtype.type ? GObject.type_name(this.xtype.type) : '';
267 XObject.log("add children to " + type);
270 this.items.forEach(function(i,n) {
275 for (var i in this.listeners) {
276 this.addListener(i, this.listeners[i]);
279 this.init = XObject.emptyFn;
281 // delete this.listeners ?
282 // do again so child props work!
284 // do we need to call 'init here?'
290 * Adds an item to the object using a new XObject
291 * uses pack property to determine how to add it.
292 * @arg cfg {Object} same as XObject constructor.
294 addItem : function(item, pos)
297 if (typeof(item) == 'undefined') {
298 XObject.error("Invalid Item added to this!");
299 imports.console.dump(this);
302 // what about extended items!?!?!?
305 //print("CTR:PROTO:" + ( item.id ? item.id : '??'));
306 // print("addItem - call init [" + item.pack.join(',') + ']');
308 XObject.err("NO EL!");
309 imports.console.dump(item);
314 if (item.pack===false) { // no packing.. various items have this ..
318 if (typeof(item.pack) == 'function') { // pack is a function..
320 item.pack.apply(item, [ this , item ]);
328 if (typeof(item.pack) == 'string') {
330 item.pack.split(',').forEach(function(e, i) {
332 if (e == 'false') { args.push( false); return; }
333 if (e == 'true') { args.push( true); return; }
334 if (!isNaN(parseInt(e))) { args.push( parseInt(e)); return; }
337 //print(args.join(","));
339 pack_m = args.shift();
341 pack_m = item.pack.shift();
346 if (pack_m && typeof(this.el[pack_m]) == 'undefined') {
349 name: "ArgumentError",
350 message : 'pack method not available : ' + this.id + " : " + this.xtype + '.' + pack_m + " ADDING " + item.el
358 // finally call the pack method
359 //Seed.print('Pack ' + this.el + '.'+ pack_m + '(' + item.el + ')');
361 args.unshift(item.el);
367 XObject.log(pack_m + '[' + args.join(',') +']');
368 //Seed.print('args: ' + args.length);
370 this.el[pack_m].apply(this.el, args);
377 * @method addListener
378 * Connects a method to a signal. (gjs/Seed aware)
380 * @arg sig {String} name of signal
381 * @arg fn {Function} handler.
383 addListener : function(sig, fn)
386 XObject.log("Add signal " + sig);
388 var _li = XObject.createDelegate(fn,this);
389 // private listeners that are not copied to GTk.
391 if (typeof(Seed) != 'undefined') {
392 // Seed.print(typeof(_li));
393 this.el.signal[sig].connect(_li);
395 this.el.connect( sig, _li);
402 * Finds an object in the child elements using xid of object.
403 * prefix with '.' to look up the tree..
404 * prefix with multiple '..' to look further up..
405 * prefix with '/' to look from the top, eg. '^LeftTree.model'
407 * @arg name {String} name of signal
408 * @return {XObject|false} the object if found.
412 XObject.log("SEARCH FOR " + xid + " in " + this.id);
417 name: "ArgumentError",
418 message : "ID not found : empty id"
423 return this.parent.get(xid.substring(1));
427 if (typeof(XObject.cache[xid]) != 'undefined') {
428 return XObject.cache[xid];
430 if (xid.indexOf('.') > -1) {
432 var child = xid.split('.');
433 var nxid = child.shift();
435 child = child.join('.');
436 if (typeof(XObject.cache[nxid]) != 'undefined') {
437 return XObject.cache[nxid].get(child);
448 ret = e.get(xid.substring(1));
453 name: "ArgumentError",
454 message : "ID not found : " + oid
457 XObject.cache[xid] = ret;
458 return XObject.cache[xid];
462 if (xid.indexOf('.') > -1) {
463 child = xid.split('.');
466 child = child.join('.');
469 if (xid == this.id) {
471 return child === false ? this : this.get(child);
474 name: "ArgumentError",
475 message : "ID not found : " + oid
482 this.items.forEach(function(ch) {
492 return child === false ? ret : ret.get(child);
495 name: "ArgumentError",
496 message : "ID not found : " + oid
503 this.items.forEach(function(ch) {
508 XObject.error("invalid item...");
509 imports.console.dump(_this);
520 name: "ArgumentError",
521 message : "ID not found : " + oid
525 return child === false ? ret : ret.get(child);
528 name: "ArgumentError",
529 message : "ID not found : " + oid
539 * Copies all the properties of config to obj.
541 * Pretty much the same as JQuery/Prototype.. or Roo.apply
542 * @param {Object} obj The receiver of the properties
543 * @param {Object} config The source of the properties
544 * @param {Object} defaults A different object that will also be applied for default values
545 * @return {Object} returns obj
546 * @member XObject extend
550 XObject.extend = function(o, c, defaults){
552 // no "this" reference for friendly out of scope calls
553 XObject.extend(o, defaults);
555 if(o && c && typeof c == 'object'){
563 XObject.extend(XObject,
567 * @property {Boolean} debug XObject debugging. - set to true to debug.
572 * @property {Object} cache - cache of object ids
580 emptyFn : function () { },
586 * @param {String|Object} output String to print.
588 log : function(output)
593 print("LOG:" + output);
598 * @param {String|Object} output String to print.
600 error : function(output)
602 print("ERROR: " + output);
607 * Copies all the properties of config to obj, if the do not exist.
608 * @param {Object} obj The receiver of the properties
609 * @param {Object} config The source of the properties
610 * @return {Object} returns obj
611 * @member Object extendIf
615 extendIf : function(o, c)
618 if(!o || !c || typeof c != 'object'){
622 if (typeof(o[p]) != 'undefined') {
633 * Extends one class with another class and optionally overrides members with the passed literal. This class
634 * also adds the function "override()" to the class that can be used to override
635 * members on an instance.
638 * MyObject = Object.define(
642 * parentClass, // or Object
644 * ... methods and properties.
647 * @param {Function} constructor The class inheriting the functionality
648 * @param {Object} superclass The class being extended
649 * @param {Object} overrides (optional) A literal with members
650 * @return {Function} constructor (eg. class
656 var io = function(o){
661 return function(constructor, parentClass, overrides) {
662 if (typeof(parentClass) == 'undefined') {
663 XObject.error("XObject.define: Missing parentClass: when applying: " );
664 XObject.error(new String(constructor));
667 if (typeof(parentClass.prototype) == 'undefined') {
668 XObject.error("Missing protype: when applying: " );
669 XObject.error(new String(constructor));
670 XObject.error(new String(parentClass));
673 var F = function(){};
675 var spp = parentClass.prototype;
678 sbp = constructor.prototype = new F();
679 sbp.constructor=constructor;
680 constructor.superclass=spp;
683 if(spp.constructor == Object.prototype.constructor){
684 spp.constructor=parentClass;
687 constructor.override = function(o){
688 Object.extend(constructor.prototype, o);
691 XObject.extend(constructor.prototype, overrides);
698 * returns a list of keys of the object.
699 * @param {Object} obj object to inspect
700 * @return {Array} returns list of kyes
701 * @member XObject keys
713 * @member XObject createDelegate
714 * creates a delage metdhod
715 * @param {Function} method to wrap
716 * @param {Object} scope
717 * @param {Array} args to add
718 * @param {Boolean|Number} append arguments or replace after N arguments.
719 * @return {Function} returns the delegate
722 createDelegate : function(method, obj, args, appendArgs){
725 XObject.log("CALL: " + obj.id + ':'+ method.id);
727 var callArgs = args || arguments;
728 if(appendArgs === true){
729 callArgs = Array.prototype.slice.call(arguments, 0);
730 callArgs = callArgs.concat(args);
731 }else if(typeof appendArgs == "number"){
732 callArgs = Array.prototype.slice.call(arguments, 0); // copy arguments first
733 var applyArgs = [appendArgs, 0].concat(args); // create method call params
734 Array.prototype.splice.apply(callArgs, applyArgs); // splice them in
736 return method.apply(obj || window, callArgs);