skins/ckeditor/plugins/plinn_image/plugin.js

   1 /* © 2011 Benoît Pin, MINES ParisTech */
   2
   3
   4 (function(){
   5
   6 var reImage = /^image\//;
   7 var MAX_PREVIEW = 2;
   8
   9 var PlinnCKDDUploader = function(editor) {
  10         this.editor = editor;
  11         this.uploadUrl = editor.config.baseHref + 'attachments/put_upload';
  12         this.uploadQueue = [];
  13         this._uploadQueueRunning = false;
  14         this.previewQueue = [];
  15         this._previewQueueRunning = false;
  16         this.previewsLoaded = 0;
  17         this.thumbnailSize = 310;
  18         var self = this;
  19         editor.document.on('dragenter', function(e) {self.dragenter(e);});
  20         editor.document.on('dragover',  function(e) {self.dragover(e);});
  21         editor.document.on('drop',              function(e) {self.drop(e);});
  22 };
  23
  24 // Drag and drop
  25 PlinnCKDDUploader.prototype.dragenter = function(e) {
  26         var evt = e.data.$;
  27         disableDefault(evt);
  28         disablePropagation(evt);
  29 };
  30
  31 PlinnCKDDUploader.prototype.dragover = function(e) {
  32         var evt = e.data.$;
  33         disableDefault(evt);
  34         disablePropagation(evt);
  35         evt = getEventObject(evt);
  36         var dt = evt.dataTransfer;
  37         dt.dropEffect = 'copy';
  38 };
  39
  40 PlinnCKDDUploader.prototype.drop = function(e) {
  41         var evt = e.data.$;
  42         disableDefault(evt);
  43         disablePropagation(evt);
  44         getEventObject(evt);
  45         var dt = evt.dataTransfer;
  46         dt.dropEffect = 'copy';
  47         this.handleFiles(dt.files);
  48 };
  49
  50 PlinnCKDDUploader.prototype.createLinkProxy = function(file) {
  51         var container = new CKEDITOR.dom.element('span');
  52         var rel = CKEDITOR.dom.element.createFromHtml('<span style="position:relative"/>');
  53         container.append(rel);
  54         var progressBar = CKEDITOR.dom.element.createFromHtml(
  55                 '<span style="display:block; position:absolute; background:#ef8e32; height:4px; border-radius:2px; width:0; left:0; top:1em"/>');
  56         rel.append(progressBar);
  57         var link = new CKEDITOR.dom.element('a');
  58         link.setAttribute('href', '#');
  59         link.setStyle('opacity', 0.2);
  60         link.appendText(file.name);
  61         container.append(link);
  62
  63         var proxy = {};
  64         proxy.file = file;
  65         proxy.type = 'link';
  66         proxy.container = container;
  67         proxy.progressBar = progressBar;
  68         proxy.link = link;
  69         return proxy;
  70 };
  71
  72 PlinnCKDDUploader.prototype.createImageProxy = function(file) {
  73         var container = new CKEDITOR.dom.element('span');
  74         var rel = CKEDITOR.dom.element.createFromHtml('<span style="position:relative"/>');
  75         container.append(rel);
  76         var progressBar = CKEDITOR.dom.element.createFromHtml(
  77                 '<span style="display:block; position:absolute; background:#ef8e32; height:4px; border-radius:2px; width:0; left:0; top:1em"/>');
  78         rel.append(progressBar);
  79
  80         var img = new CKEDITOR.dom.element('img');
  81         img.setAttribute('width', 310);
  82         img.setAttribute('height', 290);
  83         img.setStyle('opacity', 0.2);
  84         img.setAttribute('src', 'no_image.jpg');
  85         var size = this.thumbnailSize;
  86
  87         img.on('load', function(e) {
  88                 var img$ = img.$;
  89                 if (img$.width > img$.height) { // landscape
  90                         img$.height = Math.round(size * img$.height / img$.width);
  91                         img$.width = size;
  92                 }
  93                 else {
  94                         img$.width = Math.round(size * img$.width / img$.height);
  95                         img$.height = size;
  96                 }
  97                 img$.style.opacity = 0.2;
  98         });
  99
 100         container.append(img);
 101
 102         var proxy = {};
 103         proxy.file = file;
 104         proxy.type = 'image';
 105         proxy.container = container;
 106         proxy.progressBar = progressBar;
 107         proxy.img = img;
 108         return proxy;
 109 };
 110
 111 // Methods about upload
 112 PlinnCKDDUploader.prototype.handleFiles = function(files) {
 113         var file, i, proxy;
 114         for (i=0 ; i<files.length ; i++) {
 115                 file = files[i];
 116                 if (reImage.test(file.type)) {
 117                         proxy = this.createImageProxy(file);
 118                         this.previewQueuePush(proxy);
 119                 }
 120                 else {
 121                         proxy = this.createLinkProxy(file);
 122                 }
 123                 this.editor.insertElement(proxy.container);
 124                 if (files.length > 1 && i < files.length-1) {
 125                         this.editor.insertText('\n'); }
 126                 this.uploadQueuePush(proxy);
 127         }
 128 };
 129
 130
 131
 132 PlinnCKDDUploader.prototype.beforeUpload = function(item) {
 133         this.uploadedItem = item;
 134         this.progressBar = item.progressBar;
 135         this.progressBarMaxSize = item.container.getSize('width');
 136 };
 137
 138
 139 PlinnCKDDUploader.prototype.upload = function(item) {
 140         // item.file must be the file to be uploaded
 141         this.beforeUpload(item);
 142         var reader = new FileReader();
 143         var req = new XMLHttpRequest();
 144         var file = item.file;
 145
 146         var self = this;
 147
 148         addListener(req.upload, 'progress', function(evt){self.progressHandler(evt);});
 149         addListener(req, 'readystatechange',
 150                 function(evt) {
 151                         if (req.readyState === 4) {
 152                                 self.uploadCompleteHandler(req);
 153                         }
 154                 });
 155
 156         req.open("PUT", this.uploadUrl);
 157         req.setRequestHeader("Content-Type", file.type);
 158         req.setRequestHeader("X-File-Name", encodeURI(file.name));
 159         addListener(reader, 'load',
 160                 function(evt){
 161                         try {
 162                                 req.sendAsBinary(evt.target.result);
 163                         }
 164                         catch(e){}
 165                 });
 166         reader.readAsBinaryString(file);
 167 };
 168
 169
 170 PlinnCKDDUploader.prototype.uploadCompleteHandlerCB = function(req) {
 171         var item = this.uploadedItem;
 172         var data = req.responseXML.documentElement;
 173         switch (item.type) {
 174                 case 'link' :
 175                         var link = new CKEDITOR.dom.element('a');
 176                         link.setAttribute('href', 'attachments/' + data.getAttribute('id'));
 177                         link.appendText(data.getAttribute('title'));
 178                         link.replace(item.container);
 179                         break;
 180                 case 'image' :
 181                         var img = new CKEDITOR.dom.element('img');
 182                         img.setAttribute('src', data.getAttribute('src'));
 183                         img.setAttribute('alt', data.getAttribute('title'));
 184                         img.setAttribute('width', data.getAttribute('width'));
 185                         img.setAttribute('height', data.getAttribute('height'));
 186                         img.replace(item.container);
 187                         break;
 188         }
 189 };
 190
 191 PlinnCKDDUploader.prototype.uploadCompleteHandler = function(req) {
 192         this.uploadCompleteHandlerCB(req);
 193         this.uploadQueueLoadNext();
 194 };
 195
 196 PlinnCKDDUploader.prototype.progressHandlerCB = function(progress) {
 197         // 0 <= progress <= 1
 198         var size = this.progressBarMaxSize * progress;
 199         size = Math.round(size);
 200         this.progressBar.setStyle('width', String(size) + 'px');
 201         var currentOpacity;
 202         switch(this.uploadedItem.type) {
 203                 case 'link' :
 204                         currentOpacity = this.uploadedItem.link.getStyle('opacity');
 205                         this.uploadedItem.link.setStyle('opacity', Math.max(currentOpacity, progress));
 206                         break;
 207                 case 'image' :
 208                         currentOpacity = this.uploadedItem.img.getStyle('opacity');
 209                         this.uploadedItem.img.setStyle('opacity', Math.max(currentOpacity, progress));
 210                         break;
 211         }
 212 };
 213
 214 PlinnCKDDUploader.prototype.progressHandler = function(evt) {
 215         if (evt.lengthComputable) {
 216                 var progress = evt.loaded / evt.total;
 217                 this.progressHandlerCB(progress);
 218         }
 219 };
 220
 221 // Methods about upload queue
 222 PlinnCKDDUploader.prototype.uploadQueuePush = function(item) {
 223         this.uploadQueue.push(item);
 224         if (!this._uploadQueueRunning) {
 225                 this.startUploadQueue();
 226         }
 227 };
 228
 229 PlinnCKDDUploader.prototype.startUploadQueue = function() {
 230         this._uploadQueueRunning = true;
 231         this.uploadQueueLoadNext();
 232 };
 233
 234 PlinnCKDDUploader.prototype.uploadQueueLoadNext = function() {
 235         var item = this.uploadQueue.shift();
 236         if (item) {
 237                 this.upload(item);
 238         }
 239         else {
 240                 this._uploadQueueRunning = false;
 241         }
 242 };
 243
 244 // Methods about image preview queue.
 245 PlinnCKDDUploader.prototype.previewQueuePush = function(proxy) {
 246         this.previewQueue.push(proxy);
 247         if (!this._previewQueueRunning) {
 248                 this.startPreviewQueue();
 249         }
 250 };
 251
 252 PlinnCKDDUploader.prototype.startPreviewQueue = function() {
 253         this._previewQueueRunning = true;
 254         this.previewQueueLoadNext();
 255 };
 256
 257 PlinnCKDDUploader.prototype.previewQueueLoadNext = function() {
 258         if (this.previewQueue.length && this.previewsLoaded < MAX_PREVIEW) {
 259                 var proxy = this.previewQueue.shift();
 260                 this.previewUploadedImage(proxy);
 261                 this.previewsLoaded++;
 262         }
 263         else {
 264                 this._previewQueueRunning = false;
 265         }
 266 };
 267
 268 PlinnCKDDUploader.prototype.previewUploadedImage = function(proxy) {
 269         var reader = new FileReader();
 270         var size = this.thumbnailSize;
 271         var self = this;
 272
 273         reader.onload = function(evt) {
 274                 proxy.img.setAttribute('src', evt.target.result);
 275                 // proxy.img.src = evt.target.result;
 276                 setTimeout(function(){self.previewQueueLoadNext();}, 500);
 277         };
 278         reader.readAsDataURL(proxy.file);
 279 };
 280
 281
 282
 283 var reSize = /getResizedImage\?size=(\d+)_(\d+)$/;
 284
 285 function updateImageSizeUrlParameters(img) {
 286         if (reSize.test(img.src)){
 287                 var matches = reSize.exec(img.src);
 288                 var srcWidth = parseInt(matches[1], 10);
 289                 var srcHeight = parseInt(matches[2], 10);
 290
 291                 var imgWidth = parseInt((img.style.width) ? img.style.width : img.width, 10);
 292                 var imgHeight = parseInt((img.style.height) ? img.style.height : img.height, 10);
 293
 294                 if ((imgWidth && imgHeight) && srcWidth !== imgWidth && srcHeight !== imgHeight) {
 295                         var newUrl = img.getAttribute('src', 2).replace(reSize, 'getResizedImage?size=' + imgWidth + '_' + imgHeight);
 296                         img.width = imgWidth;
 297                         img.height = imgHeight;
 298                         img.src = newUrl;
 299                 }
 300         }
 301 }
 302
 303 function openPlinnImageDialog(path, editor) {
 304         var winOptions  = "location=no,menubar=no,toolbar=no,dependent=yes,dialog=yes,minimizable=no,modal=yes,alwaysRaised=yes" +
 305                 ",resizable=yes"  +
 306                 ",width=801"  +
 307                 ",height=600";
 308                 //",top="  + iTop +
 309                 //",left=" + iLeft ;
 310
 311         var win = open(path + 'dialog/plinn_image.html', 'PlinnImageDialog', winOptions);
 312         win.dialogArguments = {};
 313         win.dialogArguments.editor = editor;
 314         win.dialogArguments.pluginPath = path;
 315         win.dialogArguments.CKEDITOR = CKEDITOR;
 316 }
 317
 318
 319 CKEDITOR.plugins.add( 'plinn_image',
 320 {
 321         init : function( editor )
 322         {
 323                 /* Add listener on getData event to compute images
 324                    src attributes before saving data.
 325                 */
 326                 editor.on('instanceReady', function(){
 327                         editor.on('getData',
 328                                 function(evt) {
 329                                         var tmpDiv = document.createElement('div');
 330                                         tmpDiv.innerHTML = evt.data.dataValue;
 331                                         var images = tmpDiv.getElementsByTagName('IMG');
 332                                         var i;
 333                                         for (i = 0 ; i < images.length ; i++) {
 334                                                 updateImageSizeUrlParameters(images[i]);}
 335                                         evt.data.dataValue = tmpDiv.innerHTML;
 336                                 }
 337                         );
 338                         // drag & drop upload initialisation
 339                         var dd = new PlinnCKDDUploader(editor);
 340                 });
 341
 342
 343                 var pluginPath = this.path;
 344                 var allowed = 'img[alt,!src]{border-style,border-width,float,height,margin,margin-bottom,margin-left,margin-right,margin-top,width}';
 345                 var required = 'img[alt,src]';
 346                 var command = editor.addCommand('plinn_image',
 347                         {
 348                                 exec : function(editor){openPlinnImageDialog(pluginPath, editor);},
 349                                 allowedContent: allowed,
 350                                 requiredContent: required
 351                         }
 352                 );
 353
 354                 editor.ui.addButton('PlinnImage',
 355                         {
 356                                 label : editor.lang.common.image,
 357                                 icon : pluginPath + 'dialog/plinn_image.png',
 358                                 command : 'plinn_image'
 359                         });
 360         }
 361
 362 });
 363
 364 }());