99a2685f93
Move base64 encoding of attachments to an AttachmentView. This makes image rendering an asynchronous task so we fire an update event to indicate to the parent MessageListView that its content has changed height and it is time to scroll down.
54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
var Whisper = Whisper || {};
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(function () {
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'use strict';
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Whisper.FileInputView = Backbone.View.extend({
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tagName: 'span',
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className: 'file-input',
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initialize: function() {
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this.$input = this.$el.find('input[type=file]');
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},
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events: {
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'change': 'previewImages'
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},
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addThumb: function(e) {
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this.$el.append($('<img>').attr( "src", e.target.result ));
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},
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previewImages: function() {
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this.$el.find('img').remove();
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var files = this.$input.prop('files');
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for (var i = 0; i < files.length; i++) {
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var FR = new FileReader();
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FR.onload = this.addThumb.bind(this);
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FR.readAsDataURL(files[i]);
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}
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},
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hasFiles: function() {
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var files = this.$input.prop('files');
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return files && files.length && files.length > 0;
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},
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getFiles: function() {
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var promises = [];
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var files = this.$input.prop('files');
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for (var i = 0; i < files.length; i++) {
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var contentType = files[i].type;
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var p = new Promise(function(resolve, reject) {
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var FR = new FileReader();
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FR.onload = function(e) {
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resolve({data: e.target.result, contentType: contentType});
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};
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FR.readAsArrayBuffer(files[i]);
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}.bind(this));
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promises.push(p);
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}
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this.$el.find('img').remove();
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return Promise.all(promises);
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}
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});
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})();
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