Cable-Desktop/js/models/messages.js
lilia 94c94eb7c9 Refactor message view
The message view has three flavors so far, a normal text+attachments
message, a group update, and an end session message. This changeset
extracts the normal message rendering into its own subview, and adds
some convenience functions to the message model in order to simplify
some of that flavoring logic.
2015-02-17 12:07:46 -08:00

85 lines
3 KiB
JavaScript

/* vim: ts=4:sw=4:expandtab
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
(function () {
'use strict';
window.Whisper = window.Whisper || {};
var Message = Backbone.Model.extend({
database : Whisper.Database,
storeName : 'messages',
defaults : function() {
return {
timestamp: new Date().getTime(),
attachments: []
};
},
validate: function(attributes, options) {
var required = ['conversationId', 'received_at', 'sent_at'];
var missing = _.filter(required, function(attr) { return !attributes[attr]; });
if (missing.length) {
console.log("Message missing attributes: " + missing);
}
},
isEndSession: function() {
var flag = textsecure.protobuf.PushMessageContent.Flags.END_SESSION;
return !!(this.get('flags') & flag);
},
isGroupUpdate: function() {
return !!(this.get('group_update'));
}
});
Whisper.MessageCollection = Backbone.Collection.extend({
model : Message,
database : Whisper.Database,
storeName : 'messages',
comparator : 'received_at',
destroyAll : function () {
return Promise.all(this.models.map(function(m) {
return new Promise(function(resolve, reject) {
m.destroy().then(resolve).fail(reject);
});
}));
},
fetchSentAt: function(timestamp) {
return this.fetch({
index: {
// 'receipt' index on sent_at
name: 'receipt',
only: timestamp
}
});
},
fetchConversation: function(conversationId, options) {
options = options || {};
options.index = {
// 'conversation' index on [conversationId, received_at]
name : 'conversation',
lower : [conversationId],
upper : [conversationId, Number.MAX_VALUE],
order : 'desc'
// SELECT messages WHERE conversationId = this.id ORDER
// received_at DESC
};
// TODO pagination/infinite scroll
// limit: 10, offset: page*10,
return this.fetch(options);
}
});
})()