summaryrefslogtreecommitdiff
path: root/includes/js/dojox/widget/FisheyeList.js
blob: f06d913066da8d1bc0489717a3fe00216977ea26 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
if(!dojo._hasResource["dojox.widget.FisheyeList"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.widget.FisheyeList"] = true;
dojo.provide("dojox.widget.FisheyeList");

dojo.require("dijit._Widget");
dojo.require("dijit._Templated");
dojo.require("dijit._Container");

dojo.declare("dojox.widget.FisheyeList", [dijit._Widget, dijit._Templated, dijit._Container], {
	// summary:
	//	Menu similar to the fish eye menu on the Mac OS
	// example:
	// |	<div dojoType="FisheyeList"
	// |		itemWidth="40" itemHeight="40"
	// |		itemMaxWidth="150" itemMaxHeight="150"
	// |		orientation="horizontal"
	// |		effectUnits="2"
	// |		itemPadding="10"
	// |		attachEdge="center"
	// |		labelEdge="bottom">
	// |
	// |		<div dojoType="FisheyeListItem"
	// |			id="item1"
	// |			onclick="alert('click on' + this.label + '(from widget id ' + this.widgetId + ')!');"
	// |			label="Item 1"
	// |			iconSrc="images/fisheye_1.png">
	// |		</div>
	// |		...
	// |	</div>
	//
	constructor: function(){
		//
		// TODO
		// fix really long labels in vertical mode
		//
	
		this.pos = {'x': -1, 'y': -1};	// current cursor position, relative to the grid
		
		// for conservative trigger mode, when triggered, timerScale is gradually increased from 0 to 1
		this.timerScale = 1.0;
	
	},

	EDGE: {
		CENTER: 0,
		LEFT: 1,
		RIGHT: 2,
		TOP: 3,
		BOTTOM: 4
	},

	templateString: '<div class="dojoxFisheyeListBar" dojoAttachPoint="containerNode"></div>',

	snarfChildDomOutput: true,
	
	// itemWidth: Integer
	//	width of menu item (in pixels) in it's dormant state (when the mouse is far away)
	itemWidth: 40,
	
	// itemHeight: Integer
	//	height of menu item (in pixels) in it's dormant state (when the mouse is far away)
	itemHeight: 40,
	
	// itemMaxWidth: Integer
	//	width of menu item (in pixels) in it's fully enlarged state (when the mouse is directly over it)
	itemMaxWidth: 150,
	
	// itemMaxHeight: Integer
	//	height of menu item (in pixels) in it's fully enlarged state (when the mouse is directly over it)
	itemMaxHeight: 150,

	imgNode: null,
	
	// orientation: String
	//	orientation of the menu, either "horizontal" or "vertical"
	orientation: 'horizontal',

	// isFixed: Boolean
	//	toggle to enable additional listener (window scroll) if FisheyeList is in a fixed postion
	isFixed: false,
	
	// conservativeTrigger: Boolean
	//	if true, don't start enlarging menu items until mouse is over an image;
	//	if false, start enlarging menu items as the mouse moves near them.
	conservativeTrigger: false,
	
	// effectUnits: Number
	//	controls how much reaction the menu makes, relative to the distance of the mouse from the menu
	effectUnits: 2,
		
	// itemPadding: Integer
	//	padding (in pixels) betweeen each menu item
	itemPadding: 10,
	
	// attachEdge: String
	//	controls the border that the menu items don't expand past;
	//	for example, if set to "top", then the menu items will drop downwards as they expand.
	// values
	//	"center", "left", "right", "top", "bottom".
	attachEdge: 'center',

	// labelEdge: String
	//	controls were the labels show up in relation to the menu item icons
	// values
	//	"center", "left", "right", "top", "bottom".
	labelEdge: 'bottom',

	postCreate: function(){
		var e = this.EDGE;
		dojo.setSelectable(this.domNode, false);

		var isHorizontal = this.isHorizontal = (this.orientation == 'horizontal');
		this.selectedNode = -1;

		this.isOver = false;
		this.hitX1 = -1;
		this.hitY1 = -1;
		this.hitX2 = -1;
		this.hitY2 = -1;

		//
		// only some edges make sense...
		//
		this.anchorEdge = this._toEdge(this.attachEdge, e.CENTER);
		this.labelEdge  = this._toEdge(this.labelEdge,  e.TOP);

		if(this.labelEdge == e.CENTER){ this.labelEdge = e.TOP; }

		if(isHorizontal){
			if(this.anchorEdge == e.LEFT){ this.anchorEdge = e.CENTER; }
			if(this.anchorEdge == e.RIGHT){ this.anchorEdge = e.CENTER; }
			if(this.labelEdge == e.LEFT){ this.labelEdge = e.TOP; }
			if(this.labelEdge == e.RIGHT){ this.labelEdge = e.TOP; }
		}else{
			if(this.anchorEdge == e.TOP){ this.anchorEdge = e.CENTER; }
			if(this.anchorEdge == e.BOTTOM){ this.anchorEdge = e.CENTER; }
			if(this.labelEdge == e.TOP){ this.labelEdge = e.LEFT; }
			if(this.labelEdge == e.BOTTOM){ this.labelEdge = e.LEFT; }
		}

		//
		// figure out the proximity size
		//
		var effectUnits = this.effectUnits;
		this.proximityLeft   = this.itemWidth  * (effectUnits - 0.5);
		this.proximityRight  = this.itemWidth  * (effectUnits - 0.5);
		this.proximityTop    = this.itemHeight * (effectUnits - 0.5);
		this.proximityBottom = this.itemHeight * (effectUnits - 0.5);
	
		if(this.anchorEdge == e.LEFT){
			this.proximityLeft = 0;
		}
		if(this.anchorEdge == e.RIGHT){
			this.proximityRight = 0;
		}
		if(this.anchorEdge == e.TOP){
			this.proximityTop = 0;
		}
		if(this.anchorEdge == e.BOTTOM){
			this.proximityBottom = 0;
		}
		if(this.anchorEdge == e.CENTER){
			this.proximityLeft   /= 2;
			this.proximityRight  /= 2;
			this.proximityTop    /= 2;
			this.proximityBottom /= 2;
		}
	},
	
	startup: function(){
		// summary: create our connections and setup our FisheyeList
		this.children = this.getChildren();
		//original postCreate() --tk
		this._initializePositioning();
	
		//
		// in liberal trigger mode, activate menu whenever mouse is close
		//
		if(!this.conservativeTrigger){
			this._onMouseMoveHandle = dojo.connect(document.documentElement, "onmousemove", this, "_onMouseMove");
		}
		if (this.isFixed){
			this._onScrollHandle = dojo.connect(document,"onscroll",this,"_onScroll");
		}
			
		// Deactivate the menu if mouse is moved off screen (doesn't work for FF?)
		this._onMouseOutHandle = dojo.connect(document.documentElement, "onmouseout", this, "_onBodyOut");
		this._addChildHandle = dojo.connect(this, "addChild", this, "_initializePositioning");
		this._onResizeHandle = dojo.connect(window,"onresize", this, "_initializePositioning");
	},
	
	_initializePositioning: function(){
		this.itemCount = this.children.length;
	
		this.barWidth  = (this.isHorizontal ? this.itemCount : 1) * this.itemWidth;
		this.barHeight = (this.isHorizontal ? 1 : this.itemCount) * this.itemHeight;
	
		this.totalWidth  = this.proximityLeft + this.proximityRight  + this.barWidth;
		this.totalHeight = this.proximityTop  + this.proximityBottom + this.barHeight;
	
		//
		// calculate effect ranges for each item
		//

		for(var i=0; i<this.children.length; i++){

			this.children[i].posX = this.itemWidth  * (this.isHorizontal ? i : 0);
			this.children[i].posY = this.itemHeight * (this.isHorizontal ? 0 : i);

			this.children[i].cenX = this.children[i].posX + (this.itemWidth  / 2);
			this.children[i].cenY = this.children[i].posY + (this.itemHeight / 2);

			var isz = this.isHorizontal ? this.itemWidth : this.itemHeight;
			var r = this.effectUnits * isz;
			var c = this.isHorizontal ? this.children[i].cenX : this.children[i].cenY;
			var lhs = this.isHorizontal ? this.proximityLeft : this.proximityTop;
			var rhs = this.isHorizontal ? this.proximityRight : this.proximityBottom;
			var siz = this.isHorizontal ? this.barWidth : this.barHeight;

			var range_lhs = r;
			var range_rhs = r;

			if(range_lhs > c+lhs){ range_lhs = c+lhs; }
			if(range_rhs > (siz-c+rhs)){ range_rhs = siz-c+rhs; }

			this.children[i].effectRangeLeft = range_lhs / isz;
			this.children[i].effectRangeRght = range_rhs / isz;

			//dojo.debug('effect range for '+i+' is '+range_lhs+'/'+range_rhs);
		}

		//
		// create the bar
		//
		this.domNode.style.width = this.barWidth + 'px';
		this.domNode.style.height = this.barHeight + 'px';

		//
		// position the items
		//
		for(var i=0; i<this.children.length; i++){
			var itm = this.children[i];
			var elm = itm.domNode;
			elm.style.left   = itm.posX + 'px';
			elm.style.top    = itm.posY + 'px';
			elm.style.width  = this.itemWidth + 'px';
			elm.style.height = this.itemHeight + 'px';
			
			itm.imgNode.style.left = this.itemPadding+'%';
			itm.imgNode.style.top = this.itemPadding+'%';
			itm.imgNode.style.width = (100 - 2 * this.itemPadding) + '%';
			itm.imgNode.style.height = (100 - 2 * this.itemPadding) + '%';
		}

		//
		// calc the grid
		//
		this._calcHitGrid();
	},

	_overElement: function(/* DomNode|String */node, /* Event */e){
		// summary:
		//	Returns whether the mouse is over the passed element.
		// Node: Must must be display:block (ie, not a <span>)
		node = dojo.byId(node);
		var mouse = {x: e.pageX, y: e.pageY};
		var bb = dojo._getBorderBox(node);
		var absolute = dojo.coords(node, true);
		var top = absolute.y;
		var bottom = top + bb.h;
		var left = absolute.x;
		var right = left + bb.w;

		return (mouse.x >= left
			&& mouse.x <= right
			&& mouse.y >= top
			&& mouse.y <= bottom
		);	//	boolean
	},

	_onBodyOut: function(/*Event*/ e){
		// clicking over an object inside of body causes this event to fire; ignore that case
		if( this._overElement(dojo.body(), e) ){
			return;
		}
		this._setDormant(e);
	},

	_setDormant: function(/*Event*/ e){
		// summary: called when mouse moves out of menu's range

		if(!this.isOver){ return; }	// already dormant?
		this.isOver = false;

		if(this.conservativeTrigger){
			// user can't re-trigger the menu expansion
			// until he mouses over a icon again
			dojo.disconnect(this._onMouseMoveHandle);
		}
		this._onGridMouseMove(-1, -1);
	},

	_setActive: function(/*Event*/ e){
		// summary: called when mouse is moved into menu's range

		if(this.isOver){ return; }	// already activated?
		this.isOver = true;

		if(this.conservativeTrigger){
			// switch event handlers so that we handle mouse events from anywhere near
			// the menu
			this._onMouseMoveHandle = dojo.connect(document.documentElement, "onmousemove", this, "_onMouseMove");

			this.timerScale=0.0;

			// call mouse handler to do some initial necessary calculations/positioning
			this._onMouseMove(e);

			// slowly expand the icon size so it isn't jumpy
			this._expandSlowly();
		}
	},

	_onMouseMove: function(/*Event*/ e){
		// summary: called when mouse is moved
		if(	(e.pageX >= this.hitX1) && (e.pageX <= this.hitX2) &&
			(e.pageY >= this.hitY1) && (e.pageY <= this.hitY2)	){
			if(!this.isOver){
				this._setActive(e);
			}
			this._onGridMouseMove(e.pageX-this.hitX1, e.pageY-this.hitY1);
		}else{
			if(this.isOver){
				this._setDormant(e);
			}
		}
	},

	_onScroll: function(){
		this._calcHitGrid();	
	},

	onResized: function(){
		this._calcHitGrid();
	},

	_onGridMouseMove: function(x, y){
		// summary: called when mouse is moved in the vicinity of the menu
		this.pos = {x:x, y:y};
		this._paint();
	},

	_paint: function(){
		var x=this.pos.x;
		var y=this.pos.y;

		if(this.itemCount <= 0){ return; }

		//
		// figure out our main index
		//
		var pos = this.isHorizontal ? x : y;
		var prx = this.isHorizontal ? this.proximityLeft : this.proximityTop;
		var siz = this.isHorizontal ? this.itemWidth : this.itemHeight;
		var sim = this.isHorizontal ? 
			(1.0-this.timerScale)*this.itemWidth + this.timerScale*this.itemMaxWidth :
			(1.0-this.timerScale)*this.itemHeight + this.timerScale*this.itemMaxHeight ;

		var cen = ((pos - prx) / siz) - 0.5;
		var max_off_cen = (sim / siz) - 0.5;

		if(max_off_cen > this.effectUnits){ max_off_cen = this.effectUnits; }

		//
		// figure out our off-axis weighting
		//
		var off_weight = 0;

		if(this.anchorEdge == this.EDGE.BOTTOM){
			var cen2 = (y - this.proximityTop) / this.itemHeight;
			off_weight = (cen2 > 0.5) ? 1 : y / (this.proximityTop + (this.itemHeight / 2));
		}
		if(this.anchorEdge == this.EDGE.TOP){
			var cen2 = (y - this.proximityTop) / this.itemHeight;
			off_weight = (cen2 < 0.5) ? 1 : (this.totalHeight - y) / (this.proximityBottom + (this.itemHeight / 2));
		}
		if(this.anchorEdge == this.EDGE.RIGHT){
			var cen2 = (x - this.proximityLeft) / this.itemWidth;
			off_weight = (cen2 > 0.5) ? 1 : x / (this.proximityLeft + (this.itemWidth / 2));
		}
		if(this.anchorEdge == this.EDGE.LEFT){
			var cen2 = (x - this.proximityLeft) / this.itemWidth;
			off_weight = (cen2 < 0.5) ? 1 : (this.totalWidth - x) / (this.proximityRight + (this.itemWidth / 2));
		}
		if(this.anchorEdge == this.EDGE.CENTER){
			if(this.isHorizontal){
				off_weight = y / (this.totalHeight);
			}else{
				off_weight = x / (this.totalWidth);
			}

			if(off_weight > 0.5){
				off_weight = 1 - off_weight;
			}

			off_weight *= 2;
		}

		//
		// set the sizes
		//
		for(var i=0; i<this.itemCount; i++){
			var weight = this._weighAt(cen, i);
			if(weight < 0){weight = 0;}
			this._setItemSize(i, weight * off_weight);
		}

		//
		// set the positions
		//

		var main_p = Math.round(cen);
		var offset = 0;

		if(cen < 0){

			main_p = 0;

		}else if(cen > this.itemCount - 1){

			main_p = this.itemCount -1;

		}else{

			offset = (cen - main_p) * ((this.isHorizontal ? this.itemWidth : this.itemHeight) - this.children[main_p].sizeMain);
		}

		this._positionElementsFrom(main_p, offset);
	},

	_weighAt: function(/*Integer*/ cen, /*Integer*/ i){
		var dist = Math.abs(cen - i);
		var limit = ((cen - i) > 0) ? this.children[i].effectRangeRght : this.children[i].effectRangeLeft;
		return (dist > limit) ? 0 : (1 - dist / limit); // Integer
	},

	_setItemSize: function(p, scale){
		scale *= this.timerScale;
		var w = Math.round(this.itemWidth  + ((this.itemMaxWidth  - this.itemWidth ) * scale));
		var h = Math.round(this.itemHeight + ((this.itemMaxHeight - this.itemHeight) * scale));

		if(this.isHorizontal){

			this.children[p].sizeW = w;
			this.children[p].sizeH = h;

			this.children[p].sizeMain = w;
			this.children[p].sizeOff  = h;

			var y = 0;
			if(this.anchorEdge == this.EDGE.TOP){
				y = (this.children[p].cenY - (this.itemHeight / 2));
			}else if(this.anchorEdge == this.EDGE.BOTTOM){
				y = (this.children[p].cenY - (h - (this.itemHeight / 2)));
			}else{
				y = (this.children[p].cenY - (h / 2));
			}

			this.children[p].usualX = Math.round(this.children[p].cenX - (w / 2));
			this.children[p].domNode.style.top  = y + 'px';
			this.children[p].domNode.style.left  = this.children[p].usualX + 'px';

		}else{

			this.children[p].sizeW = w;
			this.children[p].sizeH = h;

			this.children[p].sizeOff  = w;
			this.children[p].sizeMain = h;

			var x = 0;
			if(this.anchorEdge == this.EDGE.LEFT){
				x = this.children[p].cenX - (this.itemWidth / 2);
			}else if (this.anchorEdge == this.EDGE.RIGHT){
				x = this.children[p].cenX - (w - (this.itemWidth / 2));
			}else{
				x = this.children[p].cenX - (w / 2);
			}

			this.children[p].domNode.style.left = x + 'px';
			this.children[p].usualY = Math.round(this.children[p].cenY - (h / 2));

			this.children[p].domNode.style.top  = this.children[p].usualY + 'px';
		}

		this.children[p].domNode.style.width  = w + 'px';
		this.children[p].domNode.style.height = h + 'px';

		if(this.children[p].svgNode){
			this.children[p].svgNode.setSize(w, h);
		}
	},

	_positionElementsFrom: function(p, offset){
		var pos = 0;

		if(this.isHorizontal){
			pos = Math.round(this.children[p].usualX + offset);
			this.children[p].domNode.style.left = pos + 'px';
		}else{
			pos = Math.round(this.children[p].usualY + offset);
			this.children[p].domNode.style.top = pos + 'px';
		}
		this._positionLabel(this.children[p]);

		// position before
		var bpos = pos;
		for(var i=p-1; i>=0; i--){
			bpos -= this.children[i].sizeMain;

			if (this.isHorizontal){
				this.children[i].domNode.style.left = bpos + 'px';
			}else{
				this.children[i].domNode.style.top = bpos + 'px';
			}
			this._positionLabel(this.children[i]);
		}

		// position after
		var apos = pos;
		for(var i=p+1; i<this.itemCount; i++){
			apos += this.children[i-1].sizeMain;
			if(this.isHorizontal){
				this.children[i].domNode.style.left = apos + 'px';
			}else{
				this.children[i].domNode.style.top = apos + 'px';
			}
			this._positionLabel(this.children[i]);
		}

	},

	_positionLabel: function(itm){
		var x = 0;
		var y = 0;
		
		var mb = dojo.marginBox(itm.lblNode);

		if(this.labelEdge == this.EDGE.TOP){
			x = Math.round((itm.sizeW / 2) - (mb.w / 2));
			y = -mb.h;
		}

		if(this.labelEdge == this.EDGE.BOTTOM){
			x = Math.round((itm.sizeW / 2) - (mb.w / 2));
			y = itm.sizeH;
		}

		if(this.labelEdge == this.EDGE.LEFT){
			x = -mb.w;
			y = Math.round((itm.sizeH / 2) - (mb.h / 2));
		}

		if(this.labelEdge == this.EDGE.RIGHT){
			x = itm.sizeW;
			y = Math.round((itm.sizeH / 2) - (mb.h / 2));
		}

		itm.lblNode.style.left = x + 'px';
		itm.lblNode.style.top  = y + 'px';
	},

	_calcHitGrid: function(){

		var pos = dojo.coords(this.domNode, true);

		this.hitX1 = pos.x - this.proximityLeft;
		this.hitY1 = pos.y - this.proximityTop;
		this.hitX2 = this.hitX1 + this.totalWidth;
		this.hitY2 = this.hitY1 + this.totalHeight;

	},

	_toEdge: function(inp, def){
		return this.EDGE[inp.toUpperCase()] || def;
	},

	_expandSlowly: function(){
		// summary: slowly expand the image to user specified max size
		if(!this.isOver){ return; }
		this.timerScale += 0.2;
		this._paint();
		if(this.timerScale<1.0){
			setTimeout(dojo.hitch(this, "_expandSlowly"), 10);
		}
	},

	destroyRecursive: function(){
		// need to disconnect when we destroy
		dojo.disconnect(this._onMouseOutHandle);
		dojo.disconnect(this._onMouseMoveHandle);
		dojo.disconnect(this._addChildHandle);
		if (this.isFixed) { dojo.disconnect(this._onScrollHandle); }
		dojo.disconnect(this._onResizeHandle); 
		this.inherited("destroyRecursive",arguments);
	}
});

dojo.declare("dojox.widget.FisheyeListItem", [dijit._Widget, dijit._Templated, dijit._Contained], {
	/*
	 * summary
	 *	Menu item inside of a FisheyeList.
	 *	See FisheyeList documentation for details on usage.
	 */

	// iconSrc: String
	//	pathname to image file (jpg, gif, png, etc.) of icon for this menu item
	iconSrc: "",

	// label: String
	//	label to print next to the icon, when it is moused-over
	label: "",

	// id: String
	//	will be set to the id of the orginal div element
	id: "",

	_blankImgPath: dojo.moduleUrl("dojo", "resources/blank.gif"),

	templateString:
		'<div class="dojoxFisheyeListItem">' +
		'  <img class="dojoxFisheyeListItemImage" dojoAttachPoint="imgNode" dojoAttachEvent="onmouseover:onMouseOver,onmouseout:onMouseOut,onclick:onClick">' +
		'  <div class="dojoxFisheyeListItemLabel" dojoAttachPoint="lblNode"></div>' +
		'</div>',

	_isNode: function(/* object */wh){
		//	summary:
		//		checks to see if wh is actually a node.
		if(typeof Element == "function") {
			try{
				return wh instanceof Element;	//	boolean
			}catch(e){}
		}else{
			// best-guess
			return wh && !isNaN(wh.nodeType);	//	boolean
		}
	},

	_hasParent: function(/*Node*/node){
		//	summary:
		//		returns whether or not node is a child of another node.
		return Boolean(node && node.parentNode && this._isNode(node.parentNode));	//	boolean
	},

	postCreate: function() {

		// set image
		if((this.iconSrc.toLowerCase().substring(this.iconSrc.length-4)==".png")&&(dojo.isIE)&&(dojo.isIE<7)){
			/* we set the id of the new fisheyeListItem to the id of the div defined in the HTML */
			if(this._hasParent(this.imgNode) && this.id != ""){
				var parent = this.imgNode.parentNode;
				parent.setAttribute("id", this.id);
			}
			this.imgNode.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+this.iconSrc+"', sizingMethod='scale')";
			this.imgNode.src = this._blankImgPath.toString();
		}else{
			if(this._hasParent(this.imgNode) && this.id != ""){
				var parent = this.imgNode.parentNode;
				parent.setAttribute("id", this.id);
			}
			this.imgNode.src = this.iconSrc;
		}

		// Label
		if(this.lblNode){
			this.lblNode.appendChild(document.createTextNode(this.label));
		}
		dojo.setSelectable(this.domNode, false);
		this.startup();
	},

	startup: function(){
		this.parent = this.getParent();
	},
	
	onMouseOver: function(/*Event*/ e){
		// summary: callback when user moves mouse over this menu item
		// in conservative mode, don't activate the menu until user mouses over an icon
		if(!this.parent.isOver){
			this.parent._setActive(e);
		}
		if(this.label != "" ){
			dojo.addClass(this.lblNode, "dojoxFishSelected");
			this.parent._positionLabel(this);
		}
	},
	
	onMouseOut: function(/*Event*/ e){
		// summary: callback when user moves mouse off of this menu item
		dojo.removeClass(this.lblNode, "dojoxFishSelected");
	},

	onClick: function(/*Event*/ e){
		// summary: user overridable callback when user clicks this menu item
	}
});

}