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