// 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);});
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();
}
};
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;