Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 659:9da101c94465 jquery
small birdview improvements
author | hertzhaft |
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date | Sat, 22 Jan 2011 00:26:43 +0100 |
parents | 9ddcf0070122 |
children | e1103bd09f57 |
rev | line source |
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604 | 1 /* |
2 * digilib jQuery plugin | |
3 * | |
4 */ | |
655 | 5 |
636 | 6 // fallback for console.log calls |
7 if (typeof(console) === 'undefined') { | |
8 var console = { | |
9 log : function(){}, | |
10 debug : function(){}, | |
11 error : function(){} | |
12 }; | |
13 } | |
604 | 14 |
15 (function($) { | |
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16 var buttons = { |
610 | 17 reference : { |
18 onclick : "javascript:getRefWin()", | |
19 tooltip : "get a reference URL", | |
20 img : "reference.png" | |
21 }, | |
22 zoomin : { | |
643 | 23 onclick : ["zoomBy", 1.4], |
610 | 24 tooltip : "zoom in", |
25 img : "zoom-in.png" | |
26 }, | |
27 zoomout : { | |
643 | 28 onclick : ["zoomBy", 0.7], |
610 | 29 tooltip : "zoom out", |
30 img : "zoom-out.png" | |
31 }, | |
32 zoomarea : { | |
654 | 33 onclick : "zoomArea", |
610 | 34 tooltip : "zoom area", |
35 img : "zoom-area.png" | |
36 }, | |
37 zoomfull : { | |
650 | 38 onclick : "zoomFull", |
610 | 39 tooltip : "view the whole image", |
40 img : "zoom-full.png" | |
41 }, | |
42 pagewidth : { | |
650 | 43 onclick : ["zoomFull", "width"], |
610 | 44 tooltip : "page width", |
45 img : "pagewidth.png" | |
46 }, | |
47 back : { | |
623 | 48 onclick : ["gotoPage", "-1"], |
610 | 49 tooltip : "goto previous image", |
50 img : "back.png" | |
51 }, | |
52 fwd : { | |
623 | 53 onclick : ["gotoPage", "+1"], |
610 | 54 tooltip : "goto next image", |
55 img : "fwd.png" | |
56 }, | |
57 page : { | |
58 onclick : "javascript:gotoPageWin()", | |
59 tooltip : "specify image", | |
60 img : "page.png" | |
61 }, | |
62 bird : { | |
635 | 63 onclick : "showBirdDiv", |
610 | 64 tooltip : "show bird's eye view", |
65 img : "birds-eye.png" | |
66 }, | |
67 help : { | |
635 | 68 onclick : "showAboutDiv", |
610 | 69 tooltip : "about Digilib", |
70 img : "help.png" | |
71 }, | |
72 reset : { | |
73 onclick : "javascript:resetImage()", | |
74 tooltip : "reset image", | |
75 img : "reset.png" | |
76 }, | |
77 mark : { | |
647 | 78 onclick : "setMark", |
610 | 79 tooltip : "set a mark", |
80 img : "mark.png" | |
81 }, | |
82 delmark : { | |
650 | 83 onclick : "removeMark", |
610 | 84 tooltip : "delete the last mark", |
85 img : "delmark.png" | |
86 }, | |
87 hmir : { | |
88 onclick : "javascript:mirror('h')", | |
89 tooltip : "mirror horizontally", | |
90 img : "mirror-horizontal.png" | |
91 }, | |
92 vmir : { | |
93 onclick : "javascript:mirror('v')", | |
94 tooltip : "mirror vertically", | |
95 img : "mirror-vertical.png" | |
96 }, | |
97 rot : { | |
98 onclick : "javascript:setParamWin('rot', 'Rotate (0..360) clockwise')", | |
99 tooltip : "rotate image", | |
100 img : "rotate.png" | |
101 }, | |
102 brgt : { | |
103 onclick : "javascript:setParamWin('brgt', 'Brightness (-255..255)')", | |
104 tooltip : "set brightness", | |
105 img : "brightness.png" | |
106 }, | |
107 cont : { | |
108 onclick : "javascript:setParamWin('cont', 'Contrast (0..8)')", | |
109 tooltip : "set contrast", | |
110 img : "contrast.png" | |
111 }, | |
112 rgb : { | |
113 onclick : "javascript:setParamWin('rgb', '...')", | |
114 tooltip : "set rgb values", | |
115 img : "rgb.png" | |
116 }, | |
117 quality : { | |
118 onclick : "javascript:setQualityWin('Quality (0..2)')", | |
119 tooltip : "set image quality", | |
120 img : "quality.png" | |
121 }, | |
122 size : { | |
123 onclick : "javascript:toggleSizeMenu()", | |
124 tooltip : "set page size", | |
125 img : "size.png" | |
126 }, | |
127 calibrationx : { | |
128 onclick : "javascript:calibrate('x')", | |
129 tooltip : "calibrate screen x-ratio", | |
130 img : "calibration-x.png" | |
131 }, | |
132 scale : { | |
133 onclick : "javascript:toggleScaleMenu()", | |
134 tooltip : "change image scale", | |
135 img : "original-size.png" | |
136 }, | |
137 options : { | |
138 onclick : "javascript:toggleOptionDiv()", | |
139 tooltip : "hide options", | |
140 img : "options.png" | |
141 }, | |
142 SEP : { | |
143 img : "sep.png" | |
144 } | |
145 }; | |
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146 |
605 | 147 var defaults = { |
616 | 148 // version of this script |
635 | 149 'version' : 'jquery.digilib.js 0.9', |
616 | 150 // logo url |
151 'logoUrl' : '../img/digilib-logo-text1.png', | |
635 | 152 // homepage url (behind logo) |
153 'homeUrl' : 'http://digilib.berlios.de', | |
610 | 154 // base URL to Scaler servlet |
652 | 155 'scalerBaseUrl' : null, |
610 | 156 // list of Scaler parameters |
627 | 157 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
158 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
159 // Scaler parameter defaults | |
643 | 160 'pn' : 1, |
627 | 161 'ww' : 1.0, |
162 'wh' : 1.0, | |
163 'wx' : 0.0, | |
164 'wy' : 0.0, | |
165 'ws' : 1.0, | |
643 | 166 'mo' : '', |
167 'rot' : 0, | |
168 'cont' : 0, | |
169 'brgt' : 0, | |
170 'rgbm' : '0/0/0', | |
171 'rgba' : '0/0/0', | |
172 'ddpi' : null, | |
173 'ddpix' : null, | |
174 'ddpiy' : null, | |
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175 // list of digilib parameters |
650 | 176 'digilibParamNames' : ['fn','pn','ww','wh','wx','wy','ws','mo','rot','cont','brgt','rgbm','rgba','mk','clop'], |
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177 // digilib parameter defaults |
643 | 178 'mk' : '', |
650 | 179 'clop' : '', |
643 | 180 // mode of operation: |
181 // fullscreen = take parameters from page URL, keep state in page URL | |
182 // embedded = take parameters from Javascript options, keep state inside object | |
610 | 183 'interactionMode' : 'fullscreen', |
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184 // buttons |
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185 'buttons' : buttons, |
612 | 186 // path to button images (must end with a slash) |
187 'buttonsImagePath' : '../greyskin/', | |
652 | 188 // button groups |
651
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189 //'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], |
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190 'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","mark","delmark","back","fwd","page","bird","SEP","help","reset","options"], |
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191 'buttonsSpecial' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], |
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192 'buttonsCustom' : [], |
616 | 193 // is birdView shown? |
194 'isBirdDivVisible' : false, | |
615 | 195 // dimensions of bird's eye window |
639 | 196 'birdDivOptions' : {'dw' : 200, 'dh' : 200}, |
659 | 197 // style of bird's eye window |
198 'birdIndicatorStyle' : {'border' : '2px solid #ff0000' }, | |
616 | 199 // is the "about" window shown? |
200 'isAboutDivVisible' : false | |
201 | |
610 | 202 }; |
655 | 203 |
608 | 204 // affine geometry classes |
205 var geom = dlGeometry(); | |
655 | 206 |
643 | 207 var MAX_ZOOMAREA = geom.rectangle(0, 0, 1, 1); |
655 | 208 |
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209 var actions = { |
654 | 210 // init: digilib initialization |
604 | 211 init : function(options) { |
608 | 212 // settings for this digilib instance are merged from defaults and options |
607 | 213 var settings = $.extend({}, defaults, options); |
636 | 214 var isFullscreen = settings.interactionMode === 'fullscreen'; |
215 var queryParams = {}; | |
607 | 216 if (isFullscreen) { |
217 queryParams = parseQueryParams(); | |
652 | 218 // check scalerBaseUrl |
219 if (settings.scalerBaseUrl == null) { | |
220 // try the host this came from | |
221 var h = window.location.host; | |
222 if (window.location.host) { | |
223 var url = window.location.href; | |
224 // assume the page lives in [webapp]/jquery/ | |
225 var pos = url.indexOf('jquery/'); | |
226 if (pos > 0) { | |
227 settings.scalerBaseUrl = url.substring(0, pos) + 'servlet/Scaler'; | |
228 } | |
229 } | |
230 } | |
636 | 231 } |
604 | 232 return this.each(function() { |
605 | 233 var $elem = $(this); |
234 var data = $elem.data('digilib'); | |
607 | 235 var elemSettings; |
608 | 236 // if the plugin hasn't been initialized yet |
604 | 237 if (!data) { |
605 | 238 // merge query parameters |
607 | 239 if (isFullscreen) { |
240 elemSettings = $.extend({}, settings, queryParams); | |
241 } else { | |
242 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
634 | 243 } |
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244 // store $(this) element in the settings |
627 | 245 data = { |
647 | 246 $elem : $elem, |
636 | 247 settings : elemSettings, |
248 queryParams : queryParams | |
627 | 249 }; |
605 | 250 // store in data element |
627 | 251 $elem.data('digilib', data); |
604 | 252 } |
633 | 253 unpackParams(data); |
608 | 254 // create HTML structure |
627 | 255 setupScalerDiv(data); |
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256 setupButtons(data, 'buttonsStandard'); |
639 | 257 // bird's eye view creation |
258 if (settings.isBirdDivVisible) { | |
641 | 259 setupBirdDiv(data); |
639 | 260 } |
627 | 261 // about window creation - TODO: could be deferred? restrict to only one item? |
628
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262 setupAboutDiv(data); |
604 | 263 }); |
264 }, | |
608 | 265 |
654 | 266 // destroy: clean up digilib |
651
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267 destroy : function(data) { |
604 | 268 return this.each(function(){ |
636 | 269 var $elem = $(this); |
654 | 270 $(window).unbind('.digilib'); // unbind all digilibs(?) |
604 | 271 data.digilib.remove(); |
636 | 272 $elem.removeData('digilib'); |
604 | 273 }); |
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274 }, |
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275 |
635 | 276 // show or hide the 'about' window |
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277 showAboutDiv : function(data, show) { |
635 | 278 data.settings.isAboutDivVisible = showDiv(data.settings.isAboutDivVisible, data.$aboutDiv, show); |
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279 }, |
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280 |
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281 // event handler: toggles the visibility of the bird's eye window |
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282 showBirdDiv : function (data, show) { |
638 | 283 if (data.$birdDiv == null) { |
284 // no bird div -> create | |
285 setupBirdDiv(data); | |
286 } | |
655 | 287 // TODO: keep bird view visible after reload (parameter, cookie?) |
635 | 288 data.settings.isBirdDivVisible = showDiv(data.settings.isBirdDivVisible, data.$birdDiv, show); |
623 | 289 }, |
655 | 290 |
623 | 291 // goto given page nr (+/-: relative) |
651
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292 gotoPage : function (data, pageNr) { |
636 | 293 var settings = data.settings; |
623 | 294 var oldpn = settings.pn; |
624 | 295 var pn = setNumValue(settings, "pn", pageNr); |
296 if (pn == null) return false; // nothing happened | |
623 | 297 if (pn < 1) { |
298 alert("no such page (page number too low)"); | |
299 settings.pn = oldpn; | |
300 return false; | |
634 | 301 } |
623 | 302 if (settings.pt) { |
303 if (pn > settings.pt) { | |
304 alert("no such page (page number too high)"); | |
305 settings.pn = oldpn; | |
306 return false; | |
307 } | |
634 | 308 } |
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309 // reset mk and others(?) |
643 | 310 data.marks = []; |
311 data.zoomArea = MAX_ZOOMAREA; | |
636 | 312 // then reload |
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313 redisplay(data); |
643 | 314 }, |
655 | 315 |
643 | 316 // zoom by a given factor |
651
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317 zoomBy : function (data, factor) { |
643 | 318 zoomBy(data, factor); |
647 | 319 }, |
320 | |
654 | 321 // zoom interactively |
322 zoomArea : function (data) { | |
323 zoomArea(data); | |
324 }, | |
325 | |
647 | 326 // zoom out to full page |
651
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327 zoomFull : function (data, mode) { |
647 | 328 data.zoomArea = MAX_ZOOMAREA; |
650 | 329 if (mode === 'width') { |
330 data.dlOpts.fitwidth = 1; | |
331 delete data.dlOpts.fitheight; | |
332 } else if (mode === 'height') { | |
333 data.dlOpts.fitheight = 1; | |
334 delete data.dlOpts.fitwidth; | |
335 } else { | |
336 delete data.dlOpts.fitwidth; | |
337 delete data.dlOpts.fitheight; | |
338 } | |
647 | 339 redisplay(data); |
340 }, | |
341 | |
342 // set a mark by clicking (or giving a position) | |
651
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343 setMark : function (data, mpos) { |
647 | 344 if (mpos == null) { |
345 // interactive | |
346 setMark(data); | |
347 } else { | |
348 // use position | |
349 data.marks.push(pos); | |
350 redisplay(data); | |
351 } | |
650 | 352 }, |
353 | |
354 // remove the last mark | |
651
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355 removeMark : function (data) { |
650 | 356 data.marks.pop(); |
357 redisplay(data); | |
604 | 358 } |
650 | 359 |
605 | 360 }; |
604 | 361 |
608 | 362 // returns parameters from page url |
607 | 363 var parseQueryParams = function() { |
636 | 364 return parseQueryString(window.location.search.slice(1)); |
365 }; | |
655 | 366 |
636 | 367 // returns parameters from embedded img-element |
607 | 368 var parseImgParams = function($elem) { |
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369 var src = $elem.find('img').first().attr('src'); |
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370 if (!src) { |
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371 return null; |
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372 } |
607 | 373 var pos = src.indexOf('?'); |
374 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
375 var scalerUrl = src.substring(0, pos); | |
627 | 376 var params = parseQueryString(query); |
377 params.scalerBaseUrl = scalerUrl; | |
378 return params; | |
636 | 379 }; |
607 | 380 |
608 | 381 // parses query parameter string into parameter object |
607 | 382 var parseQueryString = function(query) { |
383 var pairs = query.split("&"); | |
627 | 384 var params = {}; |
636 | 385 //var keys = []; |
607 | 386 for (var i = 0; i < pairs.length; i++) { |
387 var pair = pairs[i].split("="); | |
388 if (pair.length === 2) { | |
627 | 389 params[pair[0]] = pair[1]; |
636 | 390 //keys.push(pair[0]); |
634 | 391 } |
636 | 392 } |
627 | 393 return params; |
636 | 394 }; |
604 | 395 |
643 | 396 // returns a query string from key names from a parameter hash (ignoring if the same value is in defaults) |
397 var getParamString = function (settings, keys, defaults) { | |
615 | 398 var paramString = ''; |
650 | 399 var nx = false; |
615 | 400 for (i = 0; i < keys.length; ++i) { |
401 var key = keys[i]; | |
643 | 402 if ((settings[key] != null) && ((defaults == null) || (settings[key] !== defaults[key]))) { |
615 | 403 // first param gets no '&' |
650 | 404 if (nx) { |
405 paramString += '&'; | |
406 } else { | |
407 nx = true; | |
408 } | |
615 | 409 // add parm=val |
410 paramString += key + '=' + settings[key]; | |
643 | 411 } |
615 | 412 } |
413 return paramString; | |
631 | 414 }; |
415 | |
636 | 416 // returns URL and query string for Scaler |
417 var getScalerUrl = function (data) { | |
653 | 418 var settings = data.settings; |
652 | 419 if (settings.scalerBaseUrl == null) { |
420 alert("ERROR: URL of digilib Scaler servlet missing!"); | |
421 } | |
636 | 422 var keys = settings.scalerParamNames; |
643 | 423 var queryString = getParamString(settings, keys, defaults); |
636 | 424 var url = settings.scalerBaseUrl + '?' + queryString; |
425 return url; | |
426 }; | |
427 | |
428 // returns URL and query string for current digilib | |
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429 var getDigilibUrl = function (data) { |
643 | 430 packParams(data); |
636 | 431 var settings = data.settings; |
644
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432 var queryString = getParamString(settings, settings.digilibParamNames, defaults); |
636 | 433 var url = window.location.toString(); |
434 var pos = url.indexOf('?'); | |
435 var baseUrl = url.substring(0, pos); | |
436 var newurl = baseUrl + '?' + queryString; | |
437 return newurl; | |
438 }; | |
439 | |
655 | 440 // processes some parameters into objects and stuff |
631 | 441 var unpackParams = function (data) { |
442 var settings = data.settings; | |
636 | 443 // zoom area |
631 | 444 var zoomArea = geom.rectangle(settings.wx, settings.wy, settings.ww, settings.wh); |
643 | 445 data.zoomArea = zoomArea; |
636 | 446 // marks |
631 | 447 var marks = []; |
650 | 448 if (settings.mk) { |
449 var mk = settings.mk; | |
450 if (mk.indexOf(";") >= 0) { | |
451 var pa = mk.split(";"); // old format with ";" | |
452 } else { | |
453 var pa = mk.split(","); // new format | |
454 } | |
455 for (var i = 0; i < pa.length ; i++) { | |
456 var pos = pa[i].split("/"); | |
457 if (pos.length > 1) { | |
458 marks.push(geom.position(pos[0], pos[1])); | |
459 } | |
633 | 460 } |
631 | 461 } |
643 | 462 data.marks = marks; |
650 | 463 // mo (Scaler flags) |
464 var flags = {}; | |
465 if (settings.mo) { | |
466 var pa = settings.mo.split(","); | |
467 for (var i = 0; i < pa.length ; i++) { | |
468 flags[pa[i]] = pa[i]; | |
469 } | |
470 } | |
471 data.scalerFlags = flags; | |
472 // clop (digilib options) | |
473 var opts = {}; | |
474 if (settings.clop) { | |
475 var pa = settings.clop.split(","); | |
476 for (var i = 0; i < pa.length ; i++) { | |
477 opts[pa[i]] = pa[i]; | |
478 } | |
479 } | |
480 data.dlOpts = opts; | |
655 | 481 }; |
482 | |
631 | 483 // put objects back into parameters |
484 var packParams = function (data) { | |
485 var settings = data.settings; | |
636 | 486 // zoom area |
643 | 487 if (data.zoomArea) { |
647 | 488 settings.wx = cropFloat(data.zoomArea.x); |
489 settings.wy = cropFloat(data.zoomArea.y); | |
490 settings.ww = cropFloat(data.zoomArea.width); | |
491 settings.wh = cropFloat(data.zoomArea.height); | |
631 | 492 } |
636 | 493 // marks |
643 | 494 if (data.marks) { |
650 | 495 settings.mk = ''; |
643 | 496 for (var i = 0; i < data.marks.length; i++) { |
650 | 497 if (i) { |
498 settings.mk += ','; | |
499 } | |
500 settings.mk += cropFloat(data.marks[i].x).toString() + '/' + cropFloat(data.marks[i].y).toString(); | |
631 | 501 } |
650 | 502 } |
503 // Scaler flags | |
504 if (data.scalerFlags) { | |
505 var mo = ''; | |
506 for (var f in data.scalerFlags) { | |
507 if (mo) { | |
508 mo += ','; | |
509 } | |
510 mo += f; | |
511 } | |
512 settings.mo = mo; | |
513 } | |
514 // digilib options | |
515 if (data.dlOpts) { | |
516 var clop = ''; | |
517 for (var o in data.dlOpts) { | |
518 if (clop) { | |
519 clop += ','; | |
520 } | |
521 clop += o; | |
522 } | |
523 settings.clop = clop; | |
631 | 524 } |
525 }; | |
655 | 526 |
609 | 527 // returns maximum size for scaler img in fullscreen mode |
528 var getFullscreenImgSize = function($elem) { | |
529 var winH = $(window).height(); | |
530 var winW = $(window).width(); | |
531 // TODO: account for borders? | |
532 return geom.size(winW, winH); | |
608 | 533 }; |
655 | 534 |
622 | 535 // (re)load the img from a new scaler URL |
644
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536 var redisplay = function (data) { |
636 | 537 var settings = data.settings; |
538 if (settings.interactionMode === 'fullscreen') { | |
539 // update location.href (browser URL) in fullscreen mode | |
644
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540 var url = getDigilibUrl(data); |
636 | 541 var history = window.history; |
542 if (typeof(history.pushState) === 'function') { | |
543 console.debug("we could modify history, but we don't..."); | |
544 } | |
545 window.location = url; | |
546 } else { | |
547 // embedded mode -- just change img src | |
548 var url = getScalerUrl(data); | |
549 data.$img.attr('src', url); | |
550 } | |
622 | 551 }; |
552 | |
608 | 553 // creates HTML structure for digilib in elem |
627 | 554 var setupScalerDiv = function (data) { |
555 var settings = data.settings; | |
647 | 556 var $elem = data.$elem; |
623 | 557 var $img; |
608 | 558 if (settings.interactionMode === 'fullscreen') { |
609 | 559 // fullscreen |
560 var imgSize = getFullscreenImgSize($elem); | |
650 | 561 // fitwidth/height omits destination height/width |
562 if (data.dlOpts['fitheight'] == null) { | |
563 settings.dw = imgSize.width; | |
564 } | |
565 if (data.dlOpts['fitwidth'] == null) { | |
566 settings.dh = imgSize.height; | |
567 } | |
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568 $img = $('<img/>'); |
636 | 569 var scalerUrl = getScalerUrl(data); |
570 $img.attr('src', scalerUrl); | |
609 | 571 } else { |
613
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572 // embedded mode -- try to keep img tag |
623 | 573 $img = $elem.find('img'); |
613
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574 if ($img.length > 0) { |
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575 console.debug("img detach:",$img); |
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576 $img.detach(); |
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577 } else { |
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578 $img = $('<img/>'); |
636 | 579 var scalerUrl = getScalerUrl(data); |
580 $img.attr('src', scalerUrl); | |
613
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581 } |
608 | 582 } |
613
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583 // create new html |
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584 $elem.empty(); // TODO: should we keep stuff for customization? |
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585 var $scaler = $('<div class="scaler"/>'); |
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586 $elem.append($scaler); |
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587 $scaler.append($img); |
622 | 588 $img.addClass('pic'); |
649 | 589 data.$scaler = $scaler; |
636 | 590 data.$img = $img; |
591 $img.load(scalerImgLoadedHandler(data)); | |
608 | 592 }; |
615 | 593 |
610 | 594 // creates HTML structure for buttons in elem |
628
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595 var setupButtons = function (data, actionGroup) { |
647 | 596 var $elem = data.$elem; |
628
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597 var settings = data.settings; |
610 | 598 if (settings.interactionMode === 'fullscreen') { |
599 // fullscreen -- create new | |
612 | 600 var $buttonsDiv = $('<div class="buttons"></div>'); |
601 $elem.append($buttonsDiv); | |
618
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602 var actionNames = settings[actionGroup]; |
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603 for (var i = 0; i < actionNames.length; i++) { |
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604 var actionName = actionNames[i]; |
651
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605 var buttonSettings = settings.buttons[actionName]; |
612 | 606 // construct the button html |
607 var $button = $('<div class="button"></div>'); | |
608 var $a = $('<a/>'); | |
614 | 609 var $img = $('<img class="button"/>'); |
612 | 610 $buttonsDiv.append($button); |
611 $button.append($a); | |
612 $a.append($img); | |
613 // add attributes and bindings | |
651
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614 $button.attr('title', buttonSettings.tooltip); |
618
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615 $button.addClass('button-' + actionName); |
635 | 616 // create handler for the buttons |
649 | 617 $a.bind('click.digilib', (function () { |
651
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618 // we create a new closure to capture the value of action |
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619 var action = buttonSettings.onclick; |
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620 if ($.isArray(action)) { |
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621 // the handler function calls digilib with action and parameters |
649 | 622 return function (evt) { |
651
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623 console.debug('click action=', action, ' evt=', evt); |
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624 $elem.digilib.apply($elem, action); |
649 | 625 return false; |
619 | 626 }; |
635 | 627 } else { |
651
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628 // the handler function calls digilib with action |
649 | 629 return function (evt) { |
651
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630 console.debug('click action=', action, ' evt=', evt); |
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631 $elem.digilib(action); |
649 | 632 return false; |
635 | 633 }; |
634 } | |
635 })()); | |
651
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636 $img.attr('src', settings.buttonsImagePath + buttonSettings.img); |
637 | 637 } |
611 | 638 } |
612 | 639 return $buttonsDiv; |
610 | 640 }; |
615 | 641 |
642 // creates HTML structure for the bird's eye view in elem | |
638 | 643 var setupBirdDiv = function (data) { |
647 | 644 var $elem = data.$elem; |
628
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645 var settings = data.settings; |
615 | 646 // use only the relevant parameters |
647 var keys = ['fn','pn','dw','dh']; | |
639 | 648 var birdSettings = $.extend({}, settings, settings.birdDivOptions); |
628
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649 var birdUrl = settings.scalerBaseUrl + '?' + getParamString(birdSettings, keys); |
615 | 650 // the bird's eye div |
658
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651 var $birdDiv = $('<div class="birdview" style="display:none"/>'); |
615 | 652 // the detail indicator frame |
655 | 653 var $birdzoomDiv = $('<div class="birdzoom" style="position: absolute; background-color: transparent;"/>'); |
615 | 654 // the small image |
655 var $birdImg = $('<img class="birdimg"/>'); | |
658
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656 $elem.append($birdDiv); |
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657 $birdDiv.append($birdzoomDiv); |
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658 $birdDiv.append($birdImg); |
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659 data.$birdDiv = $birdDiv; |
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660 data.$birdImg = $birdImg; |
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661 $birdImg.load(birdImgLoadedHandler(data)); |
615 | 662 $birdImg.attr('src', birdUrl); |
640
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663 if (data.settings.isBirdDivVisible) { |
658
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664 $birdDiv.fadeIn(); |
640
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665 } |
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666 }; |
615 | 667 |
625 | 668 // creates HTML structure for the about view in elem |
628
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669 var setupAboutDiv = function (data) { |
647 | 670 var $elem = data.$elem; |
628
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671 var settings = data.settings; |
625 | 672 var $aboutDiv = $('<div class="about" style="display:none"/>'); |
616 | 673 var $header = $('<p>Digilib Graphic Viewer</p>'); |
674 var $link = $('<a/>'); | |
675 var $logo = $('<img class="logo" title="digilib"/>'); | |
676 var $content = $('<p/>'); | |
677 $elem.append($aboutDiv); | |
678 $aboutDiv.append($header); | |
679 $aboutDiv.append($link); | |
680 $aboutDiv.append($content); | |
681 $link.append($logo); | |
682 $logo.attr('src', settings.logoUrl); | |
635 | 683 $link.attr('href', settings.homeUrl); |
616 | 684 $content.text('Version: ' + settings.version); |
635 | 685 // click hides |
649 | 686 $aboutDiv.bind('click.digilib', function () { |
646 | 687 settings.isAboutDivVisible = showDiv(settings.isAboutDivVisible, $aboutDiv, 0); |
649 | 688 return false; |
689 }); | |
635 | 690 data.$aboutDiv = $aboutDiv; |
634 | 691 }; |
692 | |
635 | 693 // shows some window e.g. 'about' (toggle visibility if show is null) |
694 var showDiv = function (isVisible, $div, show) { | |
645 | 695 if (show == null) { |
635 | 696 // toggle visibility |
697 isVisible = !isVisible; | |
698 } else { | |
699 // set visibility | |
700 isVisible = show; | |
701 } | |
702 if (isVisible) { | |
703 $div.fadeIn(); | |
704 } else { | |
705 $div.fadeOut(); | |
706 } | |
707 return isVisible; | |
634 | 708 }; |
616 | 709 |
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710 // create Transform from area and $img |
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711 var getImgTrafo = function ($img, area) { |
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712 var picrect = geom.rectangle($img); |
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713 var trafo = geom.transform(); |
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714 // subtract area offset and size |
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715 trafo.concat(trafo.getTranslation(geom.position(-area.x, -area.y))); |
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716 trafo.concat(trafo.getScale(geom.size(1/area.width, 1/area.height))); |
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717 // scale to screen size |
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718 trafo.concat(trafo.getScale(picrect)); |
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719 trafo.concat(trafo.getTranslation(picrect)); |
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720 return trafo; |
655 | 721 }; |
658
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722 |
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723 // returns function for load event of scaler img |
636 | 724 var scalerImgLoadedHandler = function (data) { |
725 var $img = data.$img; | |
633 | 726 return function () { |
627 | 727 console.debug("img loaded! this=", this, " data=", data); |
728 // create Transform from current area and picsize | |
658
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729 data.imgTrafo = getImgTrafo($img, data.zoomArea); |
627 | 730 // display marks |
633 | 731 renderMarks(data); |
627 | 732 //digilib.showArrows(); // show arrow overlays for zoom navigation |
658
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733 }; |
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734 }; |
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735 |
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736 // returns function for load event of bird's eye view img |
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737 var birdImgLoadedHandler = function (data) { |
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738 var $img = data.$birdImg; |
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739 return function () { |
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740 console.debug("birdimg loaded! this=", this, " data=", data); |
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741 // create Transform from current area and picsize |
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742 data.birdTrafo = getImgTrafo($img, MAX_ZOOMAREA); |
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743 // display marks |
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744 renderBirdArea(data); |
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745 }; |
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746 }; |
633 | 747 |
748 // place marks on the image | |
749 var renderMarks = function (data) { | |
647 | 750 var $elem = data.$elem; |
643 | 751 var marks = data.marks; |
649 | 752 // TODO: clear marks first(?) |
633 | 753 for (var i = 0; i < marks.length; i++) { |
754 var mark = marks[i]; | |
643 | 755 if (data.zoomArea.containsPosition(mark)) { |
633 | 756 var mpos = data.imgTrafo.transform(mark); |
757 // create mark | |
758 var html = '<div class="mark">'+(i+1)+'</div>'; | |
759 var $mark = $(html); | |
760 $elem.append($mark); | |
654 | 761 $mark.offset({left : mpos.x, top : mpos.y}); |
633 | 762 } |
763 } | |
764 }; | |
655 | 765 |
658
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766 var renderBirdArea = function (data) { |
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767 var $ind = data.$birdDiv.find('div.birdzoom'); |
659 | 768 var zoomArea = data.zoomArea; |
769 var indRect = data.birdTrafo.transform(zoomArea); | |
770 //if (isFullArea(zoomArea)) return $ind.hide(); | |
658
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771 // TODO: set the coordinates all in one call? |
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772 $ind.width(indRect.width); |
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773 $ind.height(indRect.height); |
659 | 774 // offset minus frame width |
775 $ind.offset({ left : indRect.x-2, top : indRect.y-2 }); | |
776 $ind.css(data.settings.birdIndicatorStyle); | |
658
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777 } |
659 | 778 |
647 | 779 // zooms by the given factor |
643 | 780 var zoomBy = function(data, factor) { |
781 var area = data.zoomArea; | |
782 var newarea = area.copy(); | |
783 // scale | |
784 newarea.width /= factor; | |
785 newarea.height /= factor; | |
786 // and recenter | |
787 newarea.x -= 0.5 * (newarea.width - area.width); | |
788 newarea.y -= 0.5 * (newarea.height - area.height); | |
789 newarea = MAX_ZOOMAREA.fit(newarea); | |
790 data.zoomArea = newarea; | |
644
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791 redisplay(data); |
643 | 792 }; |
793 | |
647 | 794 // add a mark where clicked |
795 var setMark = function (data) { | |
649 | 796 var $scaler = data.$scaler; |
647 | 797 console.debug("setmark"); |
798 // start event capturing | |
649 | 799 $scaler.one('click.digilib', function (evt) { |
647 | 800 // event handler adding a new mark |
801 console.debug("setmark.click evt=",evt); | |
802 var mpos = geom.position(evt.pageX, evt.pageY); | |
803 var pos = data.imgTrafo.invtransform(mpos); | |
804 data.marks.push(pos); | |
805 redisplay(data); | |
649 | 806 return false; // do we even get here? |
647 | 807 }); |
808 }; | |
654 | 809 |
810 var zoomArea = function(data) { | |
811 $elem = data.$elem; | |
812 $scaler = data.$scaler; | |
813 var pt1, pt2; | |
814 var $zoomDiv = $('<div class="zoomrect" style="display:none"/>'); | |
815 $elem.append($zoomDiv); | |
816 //var overlay = getElement("overlay"); | |
817 // use overlay div to avoid <img> mousemove problems | |
818 var picRect = geom.rectangle($scaler); | |
819 // FIX ME: is there a way to query the border width from CSS info? | |
820 // rect.x -= 2; // account for overlay borders | |
821 // rect.y -= 2; | |
822 //moveElement(overlay, picRect); | |
823 //showElement(overlay, true); | |
824 // start event capturing | |
825 //registerEvent("mousedown", overlay, zoomStart); | |
826 //registerEvent("mousedown", this.scalerImg, zoomStart); | |
827 | |
828 var zoomStart = function (evt) { | |
829 pt1 = geom.position(evt); | |
830 // setup and show zoom div | |
831 //moveElement(zoomdiv, Rectangle(pt1.x, pt1.y, 0, 0)); | |
832 $zoomDiv.offset({left : pt1.x, top : pt1.y}); | |
833 $zoomDiv.show(); | |
834 // register events | |
835 $elem.bind("mousemove.digilib", zoomMove); | |
836 $elem.bind("mouseup.digilib", zoomEnd); | |
837 return false; | |
838 }; | |
839 | |
840 // mouseup handler: end moving | |
841 var zoomEnd = function (evt) { | |
842 pt2 = geom.position(evt); | |
843 // assume a click and continue if the area is too small | |
844 var clickRect = geom.rectangle(pt1, pt2); | |
845 clickRect.normalize(); | |
846 console.debug("clickRect.getArea()=",clickRect.getArea()); | |
847 if (clickRect.getArea() <= 5) { | |
848 return false; | |
849 } | |
850 // hide zoom div | |
851 $zoomDiv.remove(); | |
852 // unregister events | |
853 $elem.unbind("mousemove.digilib", zoomMove); | |
854 $elem.unbind("mouseup.digilib", zoomEnd); | |
855 // clip and transform | |
856 clickRect.clipTo(picRect); | |
857 var area = data.imgTrafo.invtransform(clickRect); | |
858 data.zoomArea = area; | |
859 // zoomed is always fit | |
860 data.settings.ws = 1; | |
861 redisplay(data); | |
862 return false; | |
863 }; | |
864 | |
865 // mouse move handler | |
866 var zoomMove = function (evt) { | |
867 pt2 = geom.position(evt); | |
868 var rect = geom.rectangle(pt1, pt2); | |
869 rect.normalize(); | |
870 rect.clipTo(picRect); | |
871 // update zoom div | |
872 $zoomDiv.offset({left : rect.x, top : rect.y}); | |
873 $zoomDiv.width(rect.width).height(rect.height); | |
874 return false; | |
875 }; | |
876 | |
877 // bind start zoom handler | |
878 $scaler.one('mousedown.digilib', zoomStart); | |
879 }; | |
647 | 880 |
650 | 881 // sets a key to a value (relative values with +/- if relative=true) |
882 var setNumValue = function(settings, key, value) { | |
883 if (isNumber(value)) return settings[key] = value; | |
884 var sign = value.substring(0,1); | |
885 if (sign === '+' || sign === '-') { | |
886 if (settings[key] == null) { | |
651
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887 // this isn't perfect but still... |
650 | 888 settings[key] = 0; |
889 } | |
890 settings[key] = parseFloat(settings[key]) + parseFloat(value); | |
891 } else { | |
892 settings[key] = value; | |
893 } | |
894 return settings[key]; | |
895 }; | |
655 | 896 |
897 // auxiliary function (from old dllib.js) | |
659 | 898 isFullArea = function(area) { |
899 return (area.width === 1.0) && (area.height === 1.0); | |
655 | 900 }; |
901 | |
641 | 902 // auxiliary function (from Douglas Crockford, A.10) |
903 var isNumber = function isNumber(value) { | |
904 return typeof value === 'number' && isFinite(value); | |
905 }; | |
655 | 906 |
631 | 907 // auxiliary function to crop senseless precision |
908 var cropFloat = function (x) { | |
637 | 909 return parseInt(10000 * x, 10) / 10000; |
631 | 910 }; |
655 | 911 |
605 | 912 // hook plugin into jquery |
651
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913 $.fn.digilib = function(action) { |
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914 if (actions[action]) { |
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915 // call action on this with the remaining arguments (inserting data as first argument) |
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916 var $elem = $(this); |
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917 var data = $elem.data('digilib'); |
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918 var args = Array.prototype.slice.call(arguments, 1); |
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919 args.unshift(data); |
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920 return actions[action].apply(this, args); |
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921 } else if (typeof(action) === 'object' || !action) { |
634 | 922 // call init on this |
651
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923 return actions.init.apply(this, arguments); |
605 | 924 } else { |
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925 $.error( 'action ' + action + ' does not exist on jQuery.digilib' ); |
605 | 926 } |
927 }; | |
604 | 928 |
929 })(jQuery); |