To check out this repository please hg clone the following URL, or open the URL using EasyMercurial or your preferred Mercurial client.

Statistics Download as Zip
| Branch: | Revision:

root / onto / talks / mo-ismir-2007 / ui / default / slides.js @ 0:1e44d666ced1

History | View | Annotate | Download (15.3 KB)

1
// S5 v1.1 slides.js -- released into the Public Domain
2
//
3
// Please see http://www.meyerweb.com/eric/tools/s5/credits.html for information 
4
// about all the wonderful and talented contributors to this code!
5

    
6
var undef;
7
var slideCSS = '';
8
var snum = 0;
9
var smax = 1;
10
var incpos = 0;
11
var number = undef;
12
var s5mode = true;
13
var defaultView = 'slideshow';
14
var controlVis = 'visible';
15

    
16
var isIE = navigator.appName == 'Microsoft Internet Explorer' ? 1 : 0;
17
var isOp = navigator.userAgent.indexOf('Opera') > -1 ? 1 : 0;
18
var isGe = navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('Safari') < 1 ? 1 : 0;
19

    
20
function hasClass(object, className) {
21
        if (!object.className) return false;
22
        return (object.className.search('(^|\\s)' + className + '(\\s|$)') != -1);
23
}
24

    
25
function hasValue(object, value) {
26
        if (!object) return false;
27
        return (object.search('(^|\\s)' + value + '(\\s|$)') != -1);
28
}
29

    
30
function removeClass(object,className) {
31
        if (!object) return;
32
        object.className = object.className.replace(new RegExp('(^|\\s)'+className+'(\\s|$)'), RegExp.$1+RegExp.$2);
33
}
34

    
35
function addClass(object,className) {
36
        if (!object || hasClass(object, className)) return;
37
        if (object.className) {
38
                object.className += ' '+className;
39
        } else {
40
                object.className = className;
41
        }
42
}
43

    
44
function GetElementsWithClassName(elementName,className) {
45
        var allElements = document.getElementsByTagName(elementName);
46
        var elemColl = new Array();
47
        for (var i = 0; i< allElements.length; i++) {
48
                if (hasClass(allElements[i], className)) {
49
                        elemColl[elemColl.length] = allElements[i];
50
                }
51
        }
52
        return elemColl;
53
}
54

    
55
function isParentOrSelf(element, id) {
56
        if (element == null || element.nodeName=='BODY') return false;
57
        else if (element.id == id) return true;
58
        else return isParentOrSelf(element.parentNode, id);
59
}
60

    
61
function nodeValue(node) {
62
        var result = "";
63
        if (node.nodeType == 1) {
64
                var children = node.childNodes;
65
                for (var i = 0; i < children.length; ++i) {
66
                        result += nodeValue(children[i]);
67
                }                
68
        }
69
        else if (node.nodeType == 3) {
70
                result = node.nodeValue;
71
        }
72
        return(result);
73
}
74

    
75
function slideLabel() {
76
        var slideColl = GetElementsWithClassName('*','slide');
77
        var list = document.getElementById('jumplist');
78
        smax = slideColl.length;
79
        for (var n = 0; n < smax; n++) {
80
                var obj = slideColl[n];
81

    
82
                var did = 'slide' + n.toString();
83
                obj.setAttribute('id',did);
84
                if (isOp) continue;
85

    
86
                var otext = '';
87
                var menu = obj.firstChild;
88
                if (!menu) continue; // to cope with empty slides
89
                while (menu && menu.nodeType == 3) {
90
                        menu = menu.nextSibling;
91
                }
92
                 if (!menu) continue; // to cope with slides with only text nodes
93

    
94
                var menunodes = menu.childNodes;
95
                for (var o = 0; o < menunodes.length; o++) {
96
                        otext += nodeValue(menunodes[o]);
97
                }
98
                list.options[list.length] = new Option(n + ' : '  + otext, n);
99
        }
100
}
101

    
102
function currentSlide() {
103
        var cs;
104
        if (document.getElementById) {
105
                cs = document.getElementById('currentSlide');
106
        } else {
107
                cs = document.currentSlide;
108
        }
109
        cs.innerHTML = '<span id="csHere">' + snum + '<\/span> ' + 
110
                '<span id="csSep">\/<\/span> ' + 
111
                '<span id="csTotal">' + (smax-1) + '<\/span>';
112
        if (snum == 0) {
113
                cs.style.visibility = 'hidden';
114
        } else {
115
                cs.style.visibility = 'visible';
116
        }
117
}
118

    
119
function go(step) {
120
        if (document.getElementById('slideProj').disabled || step == 0) return;
121
        var jl = document.getElementById('jumplist');
122
        var cid = 'slide' + snum;
123
        var ce = document.getElementById(cid);
124
        if (incrementals[snum].length > 0) {
125
                for (var i = 0; i < incrementals[snum].length; i++) {
126
                        removeClass(incrementals[snum][i], 'current');
127
                        removeClass(incrementals[snum][i], 'incremental');
128
                }
129
        }
130
        if (step != 'j') {
131
                snum += step;
132
                lmax = smax - 1;
133
                if (snum > lmax) snum = lmax;
134
                if (snum < 0) snum = 0;
135
        } else
136
                snum = parseInt(jl.value);
137
        var nid = 'slide' + snum;
138
        var ne = document.getElementById(nid);
139
        if (!ne) {
140
                ne = document.getElementById('slide0');
141
                snum = 0;
142
        }
143
        if (step < 0) {incpos = incrementals[snum].length} else {incpos = 0;}
144
        if (incrementals[snum].length > 0 && incpos == 0) {
145
                for (var i = 0; i < incrementals[snum].length; i++) {
146
                        if (hasClass(incrementals[snum][i], 'current'))
147
                                incpos = i + 1;
148
                        else
149
                                addClass(incrementals[snum][i], 'incremental');
150
                }
151
        }
152
        if (incrementals[snum].length > 0 && incpos > 0)
153
                addClass(incrementals[snum][incpos - 1], 'current');
154
        ce.style.visibility = 'hidden';
155
        ne.style.visibility = 'visible';
156
        jl.selectedIndex = snum;
157
        currentSlide();
158
        number = 0;
159
}
160

    
161
function goTo(target) {
162
        if (target >= smax || target == snum) return;
163
        go(target - snum);
164
}
165

    
166
function subgo(step) {
167
        if (step > 0) {
168
                removeClass(incrementals[snum][incpos - 1],'current');
169
                removeClass(incrementals[snum][incpos], 'incremental');
170
                addClass(incrementals[snum][incpos],'current');
171
                incpos++;
172
        } else {
173
                incpos--;
174
                removeClass(incrementals[snum][incpos],'current');
175
                addClass(incrementals[snum][incpos], 'incremental');
176
                addClass(incrementals[snum][incpos - 1],'current');
177
        }
178
}
179

    
180
function toggle() {
181
        var slideColl = GetElementsWithClassName('*','slide');
182
        var slides = document.getElementById('slideProj');
183
        var outline = document.getElementById('outlineStyle');
184
        if (!slides.disabled) {
185
                slides.disabled = true;
186
                outline.disabled = false;
187
                s5mode = false;
188
                fontSize('1em');
189
                for (var n = 0; n < smax; n++) {
190
                        var slide = slideColl[n];
191
                        slide.style.visibility = 'visible';
192
                }
193
        } else {
194
                slides.disabled = false;
195
                outline.disabled = true;
196
                s5mode = true;
197
                fontScale();
198
                for (var n = 0; n < smax; n++) {
199
                        var slide = slideColl[n];
200
                        slide.style.visibility = 'hidden';
201
                }
202
                slideColl[snum].style.visibility = 'visible';
203
        }
204
}
205

    
206
function showHide(action) {
207
        var obj = GetElementsWithClassName('*','hideme')[0];
208
        switch (action) {
209
        case 's': obj.style.visibility = 'visible'; break;
210
        case 'h': obj.style.visibility = 'hidden'; break;
211
        case 'k':
212
                if (obj.style.visibility != 'visible') {
213
                        obj.style.visibility = 'visible';
214
                } else {
215
                        obj.style.visibility = 'hidden';
216
                }
217
        break;
218
        }
219
}
220

    
221
// 'keys' code adapted from MozPoint (http://mozpoint.mozdev.org/)
222
function keys(key) {
223
        if (!key) {
224
                key = event;
225
                key.which = key.keyCode;
226
        }
227
        if (key.which == 84) {
228
                toggle();
229
                return;
230
        }
231
        if (s5mode) {
232
                switch (key.which) {
233
                        case 10: // return
234
                        case 13: // enter
235
                                if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
236
                                if (key.target && isParentOrSelf(key.target, 'controls')) return;
237
                                if(number != undef) {
238
                                        goTo(number);
239
                                        break;
240
                                }
241
                        case 32: // spacebar
242
                        case 34: // page down
243
                        case 39: // rightkey
244
                        case 40: // downkey
245
                                if(number != undef) {
246
                                        go(number);
247
                                } else if (!incrementals[snum] || incpos >= incrementals[snum].length) {
248
                                        go(1);
249
                                } else {
250
                                        subgo(1);
251
                                }
252
                                break;
253
                        case 33: // page up
254
                        case 37: // leftkey
255
                        case 38: // upkey
256
                                if(number != undef) {
257
                                        go(-1 * number);
258
                                } else if (!incrementals[snum] || incpos <= 0) {
259
                                        go(-1);
260
                                } else {
261
                                        subgo(-1);
262
                                }
263
                                break;
264
                        case 36: // home
265
                                goTo(0);
266
                                break;
267
                        case 35: // end
268
                                goTo(smax-1);
269
                                break;
270
                        case 67: // c
271
                                showHide('k');
272
                                break;
273
                }
274
                if (key.which < 48 || key.which > 57) {
275
                        number = undef;
276
                } else {
277
                        if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
278
                        if (key.target && isParentOrSelf(key.target, 'controls')) return;
279
                        number = (((number != undef) ? number : 0) * 10) + (key.which - 48);
280
                }
281
        }
282
        return false;
283
}
284

    
285
function clicker(e) {
286
        number = undef;
287
        var target;
288
        if (window.event) {
289
                target = window.event.srcElement;
290
                e = window.event;
291
        } else target = e.target;
292
        if (target.getAttribute('href') != null || hasValue(target.rel, 'external') || isParentOrSelf(target, 'controls') || isParentOrSelf(target,'embed') || isParentOrSelf(target,'object')) return true;
293
        if (!e.which || e.which == 1) {
294
                if (!incrementals[snum] || incpos >= incrementals[snum].length) {
295
                        go(1);
296
                } else {
297
                        subgo(1);
298
                }
299
        }
300
}
301

    
302
function findSlide(hash) {
303
        var target = null;
304
        var slides = GetElementsWithClassName('*','slide');
305
        for (var i = 0; i < slides.length; i++) {
306
                var targetSlide = slides[i];
307
                if ( (targetSlide.name && targetSlide.name == hash)
308
                 || (targetSlide.id && targetSlide.id == hash) ) {
309
                        target = targetSlide;
310
                        break;
311
                }
312
        }
313
        while(target != null && target.nodeName != 'BODY') {
314
                if (hasClass(target, 'slide')) {
315
                        return parseInt(target.id.slice(5));
316
                }
317
                target = target.parentNode;
318
        }
319
        return null;
320
}
321

    
322
function slideJump() {
323
        if (window.location.hash == null) return;
324
        var sregex = /^#slide(\d+)$/;
325
        var matches = sregex.exec(window.location.hash);
326
        var dest = null;
327
        if (matches != null) {
328
                dest = parseInt(matches[1]);
329
        } else {
330
                dest = findSlide(window.location.hash.slice(1));
331
        }
332
        if (dest != null)
333
                go(dest - snum);
334
}
335

    
336
function fixLinks() {
337
        var thisUri = window.location.href;
338
        thisUri = thisUri.slice(0, thisUri.length - window.location.hash.length);
339
        var aelements = document.getElementsByTagName('A');
340
        for (var i = 0; i < aelements.length; i++) {
341
                var a = aelements[i].href;
342
                var slideID = a.match('\#slide[0-9]{1,2}');
343
                if ((slideID) && (slideID[0].slice(0,1) == '#')) {
344
                        var dest = findSlide(slideID[0].slice(1));
345
                        if (dest != null) {
346
                                if (aelements[i].addEventListener) {
347
                                        aelements[i].addEventListener("click", new Function("e",
348
                                                "if (document.getElementById('slideProj').disabled) return;" +
349
                                                "go("+dest+" - snum); " +
350
                                                "if (e.preventDefault) e.preventDefault();"), true);
351
                                } else if (aelements[i].attachEvent) {
352
                                        aelements[i].attachEvent("onclick", new Function("",
353
                                                "if (document.getElementById('slideProj').disabled) return;" +
354
                                                "go("+dest+" - snum); " +
355
                                                "event.returnValue = false;"));
356
                                }
357
                        }
358
                }
359
        }
360
}
361

    
362
function externalLinks() {
363
        if (!document.getElementsByTagName) return;
364
        var anchors = document.getElementsByTagName('a');
365
        for (var i=0; i<anchors.length; i++) {
366
                var anchor = anchors[i];
367
                if (anchor.getAttribute('href') && hasValue(anchor.rel, 'external')) {
368
                        anchor.target = '_blank';
369
                        addClass(anchor,'external');
370
                }
371
        }
372
}
373

    
374
function createControls() {
375
        var controlsDiv = document.getElementById("controls");
376
        if (!controlsDiv) return;
377
        var hider = ' onmouseover="showHide(\'s\');" onmouseout="showHide(\'h\');"';
378
        var hideDiv, hideList = '';
379
        if (controlVis == 'hidden') {
380
                hideDiv = hider;
381
        } else {
382
                hideList = hider;
383
        }
384
        controlsDiv.innerHTML = '<form action="#" id="controlForm"' + hideDiv + '>' +
385
        '<div id="navLinks">' +
386
        '<a accesskey="t" id="toggle" href="javascript:toggle();">&#216;<\/a>' +
387
        '<a accesskey="z" id="prev" href="javascript:go(-1);">&laquo;<\/a>' +
388
        '<a accesskey="x" id="next" href="javascript:go(1);">&raquo;<\/a>' +
389
        '<div id="navList"' + hideList + '><select id="jumplist" onchange="go(\'j\');"><\/select><\/div>' +
390
        '<\/div><\/form>';
391
        if (controlVis == 'hidden') {
392
                var hidden = document.getElementById('navLinks');
393
        } else {
394
                var hidden = document.getElementById('jumplist');
395
        }
396
        addClass(hidden,'hideme');
397
}
398

    
399
function fontScale() {  // causes layout problems in FireFox that get fixed if browser's Reload is used; same may be true of other Gecko-based browsers
400
        if (!s5mode) return false;
401
        var vScale = 22;  // both yield 32 (after rounding) at 1024x768
402
        var hScale = 32;  // perhaps should auto-calculate based on theme's declared value?
403
        if (window.innerHeight) {
404
                var vSize = window.innerHeight;
405
                var hSize = window.innerWidth;
406
        } else if (document.documentElement.clientHeight) {
407
                var vSize = document.documentElement.clientHeight;
408
                var hSize = document.documentElement.clientWidth;
409
        } else if (document.body.clientHeight) {
410
                var vSize = document.body.clientHeight;
411
                var hSize = document.body.clientWidth;
412
        } else {
413
                var vSize = 700;  // assuming 1024x768, minus chrome and such
414
                var hSize = 1024; // these do not account for kiosk mode or Opera Show
415
        }
416
        var newSize = Math.min(Math.round(vSize/vScale),Math.round(hSize/hScale));
417
        fontSize(newSize + 'px');
418
        if (isGe) {  // hack to counter incremental reflow bugs
419
                var obj = document.getElementsByTagName('body')[0];
420
                obj.style.display = 'none';
421
                obj.style.display = 'block';
422
        }
423
}
424

    
425
function fontSize(value) {
426
        if (!(s5ss = document.getElementById('s5ss'))) {
427
                if (!isIE) {
428
                        document.getElementsByTagName('head')[0].appendChild(s5ss = document.createElement('style'));
429
                        s5ss.setAttribute('media','screen, projection');
430
                        s5ss.setAttribute('id','s5ss');
431
                } else {
432
                        document.createStyleSheet();
433
                        document.s5ss = document.styleSheets[document.styleSheets.length - 1];
434
                }
435
        }
436
        if (!isIE) {
437
                while (s5ss.lastChild) s5ss.removeChild(s5ss.lastChild);
438
                s5ss.appendChild(document.createTextNode('body {font-size: ' + value + ' !important;}'));
439
        } else {
440
                document.s5ss.addRule('body','font-size: ' + value + ' !important;');
441
        }
442
}
443

    
444
function notOperaFix() {
445
        slideCSS = document.getElementById('slideProj').href;
446
        var slides = document.getElementById('slideProj');
447
        var outline = document.getElementById('outlineStyle');
448
        slides.setAttribute('media','screen');
449
        outline.disabled = true;
450
        if (isGe) {
451
                slides.setAttribute('href','null');   // Gecko fix
452
                slides.setAttribute('href',slideCSS); // Gecko fix
453
        }
454
        if (isIE && document.styleSheets && document.styleSheets[0]) {
455
                document.styleSheets[0].addRule('img', 'behavior: url(ui/default/iepngfix.htc)');
456
                document.styleSheets[0].addRule('div', 'behavior: url(ui/default/iepngfix.htc)');
457
                document.styleSheets[0].addRule('.slide', 'behavior: url(ui/default/iepngfix.htc)');
458
        }
459
}
460

    
461
function getIncrementals(obj) {
462
        var incrementals = new Array();
463
        if (!obj) 
464
                return incrementals;
465
        var children = obj.childNodes;
466
        for (var i = 0; i < children.length; i++) {
467
                var child = children[i];
468
                if (hasClass(child, 'incremental')) {
469
                        if (child.nodeName == 'OL' || child.nodeName == 'UL') {
470
                                removeClass(child, 'incremental');
471
                                for (var j = 0; j < child.childNodes.length; j++) {
472
                                        if (child.childNodes[j].nodeType == 1) {
473
                                                addClass(child.childNodes[j], 'incremental');
474
                                        }
475
                                }
476
                        } else {
477
                                incrementals[incrementals.length] = child;
478
                                removeClass(child,'incremental');
479
                        }
480
                }
481
                if (hasClass(child, 'show-first')) {
482
                        if (child.nodeName == 'OL' || child.nodeName == 'UL') {
483
                                removeClass(child, 'show-first');
484
                                if (child.childNodes[isGe].nodeType == 1) {
485
                                        removeClass(child.childNodes[isGe], 'incremental');
486
                                }
487
                        } else {
488
                                incrementals[incrementals.length] = child;
489
                        }
490
                }
491
                incrementals = incrementals.concat(getIncrementals(child));
492
        }
493
        return incrementals;
494
}
495

    
496
function createIncrementals() {
497
        var incrementals = new Array();
498
        for (var i = 0; i < smax; i++) {
499
                incrementals[i] = getIncrementals(document.getElementById('slide'+i));
500
        }
501
        return incrementals;
502
}
503

    
504
function defaultCheck() {
505
        var allMetas = document.getElementsByTagName('meta');
506
        for (var i = 0; i< allMetas.length; i++) {
507
                if (allMetas[i].name == 'defaultView') {
508
                        defaultView = allMetas[i].content;
509
                }
510
                if (allMetas[i].name == 'controlVis') {
511
                        controlVis = allMetas[i].content;
512
                }
513
        }
514
}
515

    
516
// Key trap fix, new function body for trap()
517
function trap(e) {
518
        if (!e) {
519
                e = event;
520
                e.which = e.keyCode;
521
        }
522
        try {
523
                modifierKey = e.ctrlKey || e.altKey || e.metaKey;
524
        }
525
        catch(e) {
526
                modifierKey = false;
527
        }
528
        return modifierKey || e.which == 0;
529
}
530

    
531
function startup() {
532
        defaultCheck();
533
        if (!isOp) createControls();
534
        slideLabel();
535
        fixLinks();
536
        externalLinks();
537
        fontScale();
538
        if (!isOp) {
539
                notOperaFix();
540
                incrementals = createIncrementals();
541
                slideJump();
542
                if (defaultView == 'outline') {
543
                        toggle();
544
                }
545
                document.onkeyup = keys;
546
                document.onkeypress = trap;
547
                document.onclick = clicker;
548
        }
549
}
550

    
551
window.onload = startup;
552
window.onresize = function(){setTimeout('fontScale()', 50);}