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comparison doc/baypiggies2008/ui/default/slides.js @ 468:2d9c85c98be6

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author drewp@bigasterisk.com
date Fri, 05 Sep 2008 07:06:34 +0000
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467:ab99105cd4fe 468:2d9c85c98be6
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' && navigator.userAgent.indexOf('Opera') < 1 ? 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)
534 createControls();
535 slideLabel();
536 fixLinks();
537 externalLinks();
538 fontScale();
539 if (!isOp) {
540 notOperaFix();
541 incrementals = createIncrementals();
542 slideJump();
543 if (defaultView == 'outline') {
544 toggle();
545 }
546 document.onkeyup = keys;
547 document.onkeypress = trap;
548 document.onclick = clicker;
549 }
550 }
551
552 window.onload = startup;
553 window.onresize = function(){setTimeout('fontScale()', 50);}