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         img.placeholder = true;
  86         var size = this.thumbnailSize;
  87         var self = this;
  88
  89         img.on('load', function(e) {
  90                 if (e.sender.placeholder) {
  91                         e.sender.placeholder = false;
  92                         return;
  93                 };
  94                 var img$ = e.data.$.target;
  95                 if (img$.naturalWidth > img$.naturalHeight) { // landscape
  96                         img$.height = Math.round(size * img$.naturalHeight / img$.naturalWidth);
  97                         img$.width = size;
  98                 }
  99                 else {
 100                         img$.width = Math.round(size * img$.naturalWidth / img$.naturalHeight);
 101                         img$.height = size;
 102                 }
 103                 self.progressBarMaxSize = img$.width;
 104                 img$.style.opacity = 0.2;
 105         });
 106
 107         container.append(img);
 108
 109         var proxy = {};
 110         proxy.file = file;
 111         proxy.type = 'image';
 112         proxy.container = container;
 113         proxy.progressBar = progressBar;
 114         proxy.img = img;
 115         return proxy;
 116 };
 117
 118 // Methods about upload
 119 PlinnCKDDUploader.prototype.handleFiles = function(files) {
 120         var file, i, proxy;
 121         for (i=0 ; i<files.length ; i++) {
 122                 file = files[i];
 123                 if (reImage.test(file.type)) {
 124                         proxy = this.createImageProxy(file);
 125                         this.previewQueuePush(proxy);
 126                 }
 127                 else {
 128                         proxy = this.createLinkProxy(file);
 129                 }
 130                 this.editor.insertElement(proxy.container);
 131                 if (files.length > 1 && i < files.length-1) {
 132                         this.editor.insertText('\n'); }
 133                 this.uploadQueuePush(proxy);
 134         }
 135 };
 136
 137
 138
 139 PlinnCKDDUploader.prototype.beforeUpload = function(item) {
 140         this.uploadedItem = item;
 141         this.progressBar = item.progressBar;
 142         this.progressBarMaxSize = item.container.getSize('width');
 143 };
 144
 145
 146 PlinnCKDDUploader.prototype.upload = function(item) {
 147         // item.file must be the file to be uploaded
 148         this.beforeUpload(item);
 149         var reader = new FileReader();
 150         var req = new XMLHttpRequest();
 151         var file = item.file;
 152
 153         var self = this;
 154
 155         addListener(req.upload, 'progress', function(evt){self.progressHandler(evt);});
 156         addListener(req, 'readystatechange',
 157                 function(evt) {
 158                         if (req.readyState === 4) {
 159                                 self.uploadCompleteHandler(req);
 160                         }
 161                 });
 162
 163         req.open("PUT", this.uploadUrl);
 164         req.setRequestHeader("Content-Type", file.type);
 165         req.setRequestHeader("X-File-Name", encodeURI(file.name));
 166         addListener(reader, 'load',
 167                 function(evt){
 168                         try {
 169                                 req.sendAsBinary(evt.target.result);
 170                         }
 171                         catch(e){}
 172                 });
 173         reader.readAsBinaryString(file);
 174 };
 175
 176
 177 PlinnCKDDUploader.prototype.uploadCompleteHandlerCB = function(req) {
 178         var item = this.uploadedItem;
 179         var data = req.responseXML.documentElement;
 180         switch (item.type) {
 181                 case 'link' :
 182                         var link = new CKEDITOR.dom.element('a');
 183                         link.setAttribute('href', 'attachments/' + data.getAttribute('id'));
 184                         link.appendText(data.getAttribute('title'));
 185                         link.replace(item.container);
 186                         break;
 187                 case 'image' :
 188                         var img = new CKEDITOR.dom.element('img');
 189                         img.setAttribute('src', data.getAttribute('src'));
 190                         img.setAttribute('alt', data.getAttribute('title'));
 191                         img.setAttribute('width', data.getAttribute('width'));
 192                         img.setAttribute('height', data.getAttribute('height'));
 193                         img.replace(item.container);
 194                         this.previewsLoaded--;
 195                         this.previewQueueLoadNext();
 196                         break;
 197         }
 198 };
 199
 200 PlinnCKDDUploader.prototype.uploadCompleteHandler = function(req) {
 201         this.uploadCompleteHandlerCB(req);
 202         this.uploadQueueLoadNext();
 203 };
 204
 205 PlinnCKDDUploader.prototype.progressHandlerCB = function(progress) {
 206         // 0 <= progress <= 1
 207         var size = this.progressBarMaxSize * progress;
 208         size = Math.round(size);
 209         this.progressBar.setStyle('width', String(size) + 'px');
 210         var currentOpacity;
 211         switch(this.uploadedItem.type) {
 212                 case 'link' :
 213                         currentOpacity = this.uploadedItem.link.getStyle('opacity');
 214                         this.uploadedItem.link.setStyle('opacity', Math.max(currentOpacity, progress));
 215                         break;
 216                 case 'image' :
 217                         currentOpacity = this.uploadedItem.img.getStyle('opacity');
 218                         this.uploadedItem.img.setStyle('opacity', Math.max(currentOpacity, progress));
 219                         break;
 220         }
 221 };
 222
 223 PlinnCKDDUploader.prototype.progressHandler = function(evt) {
 224         if (evt.lengthComputable) {
 225                 var progress = evt.loaded / evt.total;
 226                 this.progressHandlerCB(progress);
 227         }
 228 };
 229
 230 // Methods about upload queue
 231 PlinnCKDDUploader.prototype.uploadQueuePush = function(item) {
 232         this.uploadQueue.push(item);
 233         if (!this._uploadQueueRunning) {
 234                 this.startUploadQueue();
 235         }
 236 };
 237
 238 PlinnCKDDUploader.prototype.startUploadQueue = function() {
 239         this._uploadQueueRunning = true;
 240         this.uploadQueueLoadNext();
 241 };
 242
 243 PlinnCKDDUploader.prototype.uploadQueueLoadNext = function() {
 244         var item = this.uploadQueue.shift();
 245         if (item) {
 246                 this.upload(item);
 247         }
 248         else {
 249                 this._uploadQueueRunning = false;
 250         }
 251 };
 252
 253 // Methods about image preview queue.
 254 PlinnCKDDUploader.prototype.previewQueuePush = function(proxy) {
 255         this.previewQueue.push(proxy);
 256         if (!this._previewQueueRunning) {
 257                 this.startPreviewQueue();
 258         }
 259 };
 260
 261 PlinnCKDDUploader.prototype.startPreviewQueue = function() {
 262         this._previewQueueRunning = true;
 263         this.previewQueueLoadNext();
 264 };
 265
 266 PlinnCKDDUploader.prototype.previewQueueLoadNext = function() {
 267         if (this.previewQueue.length && this.previewsLoaded < MAX_PREVIEW) {
 268                 var proxy = this.previewQueue.shift();
 269                 this.previewUploadedImage(proxy);
 270                 this.previewsLoaded++;
 271         }
 272         else {
 273                 this._previewQueueRunning = false;
 274         }
 275 };
 276
 277 PlinnCKDDUploader.prototype.previewUploadedImage = function(proxy) {
 278         var reader = new FileReader();
 279         var size = this.thumbnailSize;
 280         var self = this;
 281
 282         reader.onload = function(evt) {
 283                 proxy.img.setAttribute('src', evt.target.result);
 284                 setTimeout(function(){self.previewQueueLoadNext();}, 500);
 285         };
 286         reader.readAsDataURL(proxy.file);
 287 };
 288
 289
 290
 291 var reSize = /getResizedImage\?size=(\d+)_(\d+)$/;
 292
 293 function updateImageSizeUrlParameters(img) {
 294         if (reSize.test(img.src)){
 295                 var matches = reSize.exec(img.src);
 296                 var srcWidth = parseInt(matches[1], 10);
 297                 var srcHeight = parseInt(matches[2], 10);
 298
 299                 var imgWidth = parseInt((img.style.width) ? img.style.width : img.width, 10);
 300                 var imgHeight = parseInt((img.style.height) ? img.style.height : img.height, 10);
 301
 302                 if ((imgWidth && imgHeight) && srcWidth !== imgWidth && srcHeight !== imgHeight) {
 303                         var newUrl = img.getAttribute('src', 2).replace(reSize, 'getResizedImage?size=' + imgWidth + '_' + imgHeight);
 304                         img.width = imgWidth;
 305                         img.height = imgHeight;
 306                         img.src = newUrl;
 307                 }
 308         }
 309 }
 310
 311 function openPlinnImageDialog(path, editor) {
 312         var winOptions  = "location=no,menubar=no,toolbar=no,dependent=yes,dialog=yes,minimizable=no,modal=yes,alwaysRaised=yes" +
 313                 ",resizable=yes"  +
 314                 ",width=801"  +
 315                 ",height=600";
 316                 //",top="  + iTop +
 317                 //",left=" + iLeft ;
 318
 319         var win = open(path + 'dialog/plinn_image.html', 'PlinnImageDialog', winOptions);
 320         win.dialogArguments = {};
 321         win.dialogArguments.editor = editor;
 322         win.dialogArguments.pluginPath = path;
 323         win.dialogArguments.CKEDITOR = CKEDITOR;
 324 }
 325
 326
 327 CKEDITOR.plugins.add( 'plinn_image',
 328 {
 329         init : function( editor )
 330         {
 331                 /* Add listener on getData event to compute images
 332                    src attributes before saving data.
 333                 */
 334                 editor.on('instanceReady', function(){
 335                         editor.on('getData',
 336                                 function(evt) {
 337                                         var tmpDiv = document.createElement('div');
 338                                         tmpDiv.innerHTML = evt.data.dataValue;
 339                                         var images = tmpDiv.getElementsByTagName('IMG');
 340                                         var i;
 341                                         for (i = 0 ; i < images.length ; i++) {
 342                                                 updateImageSizeUrlParameters(images[i]);}
 343                                         evt.data.dataValue = tmpDiv.innerHTML;
 344                                 }
 345                         );
 346                         // drag & drop upload initialisation
 347                         var dd = new PlinnCKDDUploader(editor);
 348                 });
 349
 350
 351                 var pluginPath = this.path;
 352                 var allowed = 'img[alt,!src]{border-style,border-width,float,height,margin,margin-bottom,margin-left,margin-right,margin-top,width}';
 353                 var required = 'img[alt,src]';
 354                 var command = editor.addCommand('plinn_image',
 355                         {
 356                                 exec : function(editor){openPlinnImageDialog(pluginPath, editor);},
 357                                 allowedContent: allowed,
 358                                 requiredContent: required
 359                         }
 360                 );
 361
 362                 editor.ui.addButton('PlinnImage',
 363                         {
 364                                 label : editor.lang.common.image,
 365                                 icon : pluginPath + 'dialog/plinn_image.png',
 366                                 command : 'plinn_image'
 367                         });
 368         }
 369
 370 });
 371
 372 }());