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.
79 lines
2.5 KiB
JavaScript
79 lines
2.5 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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(function () {
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'use strict';
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var AttachmentView = Backbone.View.extend({
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tagName: "img",
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encode: function () {
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return new Promise(function(resolve, reject) {
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var blob = new Blob([this.model.data], { type: this.model.contentType });
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var FR = new FileReader();
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FR.onload = function(e) {
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resolve(e.target.result);
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};
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FR.onerror = reject;
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FR.readAsDataURL(blob);
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}.bind(this));
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},
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render: function() {
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this.encode().then(function(base64) {
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this.$el.attr('src', base64);
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this.$el.trigger('update');
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}.bind(this));
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return this;
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}
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});
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window.Whisper = window.Whisper || {};
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Whisper.MessageView = Backbone.View.extend({
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tagName: "li",
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className: "entry",
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initialize: function() {
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this.$el.addClass(this.model.get('type'));
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this.template = $('#message').html();
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Mustache.parse(this.template);
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this.listenTo(this.model, 'change', this.render); // auto update
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this.listenTo(this.model, 'destroy', this.remove); // auto update
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},
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render: function() {
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this.$el.html(
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Mustache.render(this.template, {
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message: this.model.get('body'),
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timestamp: moment(this.model.get('timestamp')).fromNow(),
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bubble_class: this.model.get('type') === 'outgoing' ? 'sent' : 'incoming',
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sender: this.model.get('conversationType') === 'group' ? this.model.get('sender') : ''
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})
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);
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this.$el.find('.attachments').append(
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this.model.get('attachments').map(function(attachment) {
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return new AttachmentView({model: attachment}).render().el;
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})
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);
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return this;
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}
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});
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})();
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