58e7f3c7e1
Previously, the ugly file input was hidden with opacity, and styled as a square paperclip icon, but its drop and click zones were not constrained to the visible square. They remained active across the whole 'Choose File' button, which overlapped with the textarea. Instead, hide the file input complete (display: none) and transmit click events from the paperclip to the input programmatically. Eventually, we'll need to address drag and drop events, but I want to do that at the window level. Otherwise dropping a file outside the file input drop zone causes the browser to navigate to the file://... url.
94 lines
3.1 KiB
JavaScript
94 lines
3.1 KiB
JavaScript
/* vim: ts=4:sw=4:expandtab
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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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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this.modal = new Whisper.ModalView({el: $('#file-modal')});
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this.thumb = new Whisper.AttachmentPreviewView();
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},
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events: {
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'change': 'previewImages',
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'click .close': 'deleteFiles',
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'click .paperclip': 'open'
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},
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open: function() {
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this.$input.click();
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},
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addThumb: function(e) {
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this.thumb.src = e.target.result;
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this.$el.find('.paperclip').append(this.thumb.render().el);
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},
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previewImages: function() {
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this.clearForm();
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var files = this.$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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if ((files[i].size/1024).toFixed(4) >= 420) {
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this.modal.open();
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this.deleteFiles();
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}
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else {
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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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},
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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.clearForm();
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return Promise.all(promises);
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},
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clearForm: function() {
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this.thumb.remove();
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},
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deleteFiles: function() {
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this.clearForm();
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this.$input.wrap('<form>').parent('form').trigger('reset');
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this.$input.unwrap();
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}
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});
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})();
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