X-Git-Url: https://svn.cri.ensmp.fr/git/Plinn.git/blobdiff_plain/4548e061c4324dc585b0eb1466f27c17d5bd5095..02643dc71034e01a60f505cdc0887ae79314a3ed:/skins/fileupload.js diff --git a/skins/fileupload.js b/skins/fileupload.js index ff3f478..bf36628 100644 --- a/skins/fileupload.js +++ b/skins/fileupload.js @@ -42,13 +42,20 @@ DDFileUploaderBase.prototype.handleFiles = function(files) { // To be implemented by descendant. }; -DDFileUploaderBase.prototype.upload = function(slide) { + + +DDFileUploaderBase.prototype.beforeUpload = function(item) { + // To be implemented by decendant. +}; + + +DDFileUploaderBase.prototype.upload = function(item) { + // item.file must be the file to be uploaded + this.beforeUpload(item); var reader = new FileReader(); var req = new XMLHttpRequest(); - var file = slide.file; - this.uploadedSlide = slide; - this.previewImg = slide.img; - this.progressBar = slide.progressBar; + var file = item.file; + var self = this; addListener(req.upload, 'progress', function(evt){self.progressHandler(evt);}); @@ -72,50 +79,31 @@ DDFileUploaderBase.prototype.upload = function(slide) { reader.readAsBinaryString(file); }; + +DDFileUploaderBase.prototype.uploadCompleteHandlerCB = function(req) { + // To be implemented by descendant. +}; + DDFileUploaderBase.prototype.uploadCompleteHandler = function(req) { - var slide = this.uploadedSlide; - this.uploadedSlide.removeChild(slide.label); - this.uploadedSlide.removeChild(slide.progressBar); - var fragment = getCopyOfNode(req.responseXML.documentElement.firstChild); - var img = fragment.getElementsByTagName('img')[0]; - if (req.status === 200) { - // update - var existing = this.existingSlides[img.src]; - if (existing) { - existing.src = existing.src + '?' + Math.random().toString(); - } - slide.img.src = ''; - slide.img.parentNode.removeChild(slide.img); - slide.img = undefined; - slide.parentNode.removeChild(slide); - } - else if(req.status === 201) { - // creation - img.onload = function(evt) { - // accelerate GC before replacing - slide.img.src = ''; - slide.img.parentNode.removeChild(slide.img); - slide.img = undefined; - slide.parentNode.replaceChild(fragment, slide); - }; - } - this.previewsLoaded--; - this.previewQueueLoadNext(); + this.uploadCompleteHandlerCB(req); this.uploadQueueLoadNext(); }; +DDFileUploaderBase.prototype.progressHandlerCB = function(progress) { + // To be implemented by descendant. + // 0 <= progress <= 1 +}; + DDFileUploaderBase.prototype.progressHandler = function(evt) { if (evt.lengthComputable) { var progress = evt.loaded / evt.total; - this.updateProgressBar(progress); - var currentOpacity = this.previewImg.style.opacity; - this.previewImg.style.opacity = Math.max(currentOpacity, progress); + this.progressHandlerCB(progress); } }; // Methods about queue -DDFileUploaderBase.prototype.uploadQueuePush = function(slide) { - this.uploadQueue.push(slide); +DDFileUploaderBase.prototype.uploadQueuePush = function(item) { + this.uploadQueue.push(item); if (!this._uploadQueueRunning) { this.startUploadQueue(); } @@ -126,82 +114,14 @@ DDFileUploaderBase.prototype.startUploadQueue = function() { this.uploadQueueLoadNext(); }; - DDFileUploaderBase.prototype.uploadQueueLoadNext = function() { - var slide = this.uploadQueue.shift(); - if (slide) { - this.upload(slide); + var item = this.uploadQueue.shift(); + if (item) { + this.upload(item); } else { this._uploadQueueRunning = false; } }; - -// User interface -DDFileUploaderBase.prototype.createSlide = function(file) { - var slide = document.createElement('span'); - slide.file = file; - - var a = document.createElement('a'); - a.href = '#'; - a.className = 'slide'; - - var img = document.createElement('img'); - img.className = 'hidden'; - var size = this.thumbnailSize; - var self = this; - img.onload = function(evt) { - if (img.width > img.height) { // landscape - img.height = Math.round(size * img.height / img.width); - img.width = size; - } - else { - img.width = Math.round(size * img.width / img.height); - img.height = size; - } - img.style.marginLeft = Math.floor((self.slideSize - img.width) / 2) + 'px'; - img.style.marginTop = Math.floor((self.slideSize - img.height) / 2) + 'px'; - img.style.opacity = 0.2; - img.className = undefined; - }; - a.appendChild(img); - slide.img = img; - - var label = document.createElement('span'); - slide.label = label; - label.className = 'label'; - label.innerHTML = file.name; - - var progressBar = document.createElement('span'); - progressBar.className = 'upload-progress'; - slide.progressBar = progressBar; - - slide.appendChild(a); - slide.appendChild(progressBar); - slide.appendChild(label); - this.dropbox.appendChild(slide); - - return slide; -}; - -DDFileUploaderBase.prototype.updateProgressBar = function(progress) { - // 0 <= progress <= 1 - var size = this.progressBarMaxSize * progress; - size = Math.round(size); - this.progressBar.style.width = size + 'px'; -}; - -DDFileUploaderBase.prototype.previewUploadedImage = function(slide) { - var reader = new FileReader(); - var size = this.thumbnailSize; - var self = this; - - reader.onload = function(evt) { - slide.img.src = evt.target.result; - setTimeout(function(){self.previewQueueLoadNext();}, 500); - }; - reader.readAsDataURL(slide.file); -}; - }());