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osr-discourse-src/app/assets/javascripts/discourse/models/topic_list.js

135 lines
4.3 KiB
JavaScript

/**
A data model representing a list of topics
@class TopicList
@extends Discourse.Model
@namespace Discourse
@module Discourse
**/
Discourse.TopicList = Discourse.Model.extend({
loadMoreTopics: function() {
var moreUrl, _this = this;
if (moreUrl = this.get('more_topics_url')) {
Discourse.URL.replaceState(Discourse.getURL("/") + (this.get('filter')) + "/more");
return Discourse.ajax({url: moreUrl}).then(function (result) {
var newTopics, topicIds, topics, topicsAdded = 0;
if (result) {
// the new topics loaded from the server
newTopics = Discourse.TopicList.topicsFrom(result);
// the current topics
topics = _this.get('topics');
// keeps track of the ids of the current topics
topicIds = [];
topics.each(function(t) {
topicIds[t.get('id')] = true;
});
// add new topics to the list of current topics if not already present
newTopics.each(function(t) {
if (!topicIds[t.get('id')]) {
// highlight the first of the new topics so we can get a visual feedback
t.set('highlight', topicsAdded++ === 0);
return topics.pushObject(t);
}
});
_this.set('more_topics_url', result.topic_list.more_topics_url);
Discourse.set('transient.topicsList', _this);
}
return result.topic_list.more_topics_url;
});
} else {
return null;
}
},
insert: function(json) {
var newTopic = Discourse.TopicList.decodeTopic(json);
newTopic.setProperties({
unseen: true,
highlight: true
});
this.get('inserted').unshiftObject(newTopic);
}
});
Discourse.TopicList.reopenClass({
decodeTopic: function(result) {
var categories, topic, users;
categories = this.extractByKey(result.categories, Discourse.Category);
users = this.extractByKey(result.users, Discourse.User);
topic = result.topic_list_item;
topic.category = categories[topic.category];
topic.posters.each(function(p) {
p.user = users[p.user_id] || users[p.user];
});
return Discourse.Topic.create(topic);
},
topicsFrom: function(result) {
// Stitch together our side loaded data
var categories, topics, users;
categories = this.extractByKey(result.categories, Discourse.Category);
users = this.extractByKey(result.users, Discourse.User);
topics = Em.A();
result.topic_list.topics.each(function(ft) {
ft.category = categories[ft.category_id];
ft.posters.each(function(p) {
p.user = users[p.user_id];
});
return topics.pushObject(Discourse.Topic.create(ft));
});
return topics;
},
list: function(menuItem) {
var filter = menuItem.name;
var topicList = Discourse.TopicList.create({
inserted: Em.A(),
filter: filter
});
var url = Discourse.getURL("/") + filter + ".json";
if (menuItem.filters && menuItem.filters.length > 0) {
url += "?exclude_category=" + menuItem.filters[0].substring(1);
}
var list = Discourse.get('transient.topicsList');
if (list) {
if ((list.get('filter') === filter) && window.location.pathname.indexOf('more') > 0) {
list.set('loaded', true);
return Ember.Deferred.promise(function(promise) {
promise.resolve(list);
});
}
}
Discourse.set('transient.topicsList', null);
Discourse.set('transient.topicListScrollPos', null);
return PreloadStore.getAndRemove("topic_list", function() { return Discourse.ajax(url) }).then(function(result) {
topicList.setProperties({
topics: Discourse.TopicList.topicsFrom(result),
can_create_topic: result.topic_list.can_create_topic,
more_topics_url: result.topic_list.more_topics_url,
filter_summary: result.topic_list.filter_summary,
draft_key: result.topic_list.draft_key,
draft_sequence: result.topic_list.draft_sequence,
draft: result.topic_list.draft,
canViewRankDetails: result.topic_list.can_view_rank_details,
loaded: true
});
if (result.topic_list.filtered_category) {
topicList.set('category', Discourse.Category.create(result.topic_list.filtered_category));
}
return topicList;
});
}
});