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var JarrDispatcher = require('../dispatcher/JarrDispatcher');
var ActionTypes = require('../constants/JarrConstants');
var EventEmitter = require('events').EventEmitter;
var CHANGE_EVENT = 'change_middle_panel';
var assign = require('object-assign');
var MiddlePanelStore = assign({}, EventEmitter.prototype, {
filter_whitelist: ['filter', 'filter_id', 'filter_type', 'display_search',
'query', 'search_title', 'search_content'],
_datas: {articles: [], selected_article: null,
filter: 'unread', filter_type: null, filter_id: null,
display_search: false, query: null,
search_title: true, search_content: false},
getAll: function() {
return this._datas;
},
getRequestFilter: function(display_search) {
var filters = {'filter': this._datas.filter,
'filter_type': this._datas.filter_type,
'filter_id': this._datas.filter_id,
};
if(display_search || (display_search == undefined && this._datas.display_search)) {
filters.query = this._datas.query;
filters.search_title = this._datas.search_title;
filters.search_content = this._datas.search_content;
};
return filters;
},
getArticles: function() {
var key = null;
var id = null;
if (this._datas.filter_type) {
key = this._datas.filter_type;
id = this._datas.filter_id;
}
return this._datas.articles
.map(function(article) {
if(article.article_id == this._datas.selected_article) {
article.selected = true;
} else if(article.selected) {
article.selected = false;
}
return article;
}.bind(this))
.filter(function(article) {
return (article.selected || ((!key || article[key] == id)
&& (this._datas.filter == 'all'
|| (this._datas.filter == 'unread' && !article.read)
|| (this._datas.filter == 'liked' && article.liked))));
}.bind(this));
},
setArticles: function(articles) {
if(articles || articles == []) {
this._datas.articles = articles;
return true;
}
return false;
},
registerFilter: function(action) {
var changed = false;
this.filter_whitelist.map(function(key) {
if(key in action && this._datas[key] != action[key]) {
changed = true;
this._datas[key] = action[key];
}
}.bind(this));
return changed;
},
emitChange: function() {
this.emit(CHANGE_EVENT);
},
addChangeListener: function(callback) {
this.on(CHANGE_EVENT, callback);
},
removeChangeListener: function(callback) {
this.removeListener(CHANGE_EVENT, callback);
},
});
MiddlePanelStore.dispatchToken = JarrDispatcher.register(function(action) {
var changed = false;
switch(action.type) {
case ActionTypes.RELOAD_MIDDLE_PANEL:
changed = MiddlePanelStore.registerFilter(action);
changed = MiddlePanelStore.setArticles(action.articles) || changed;
break;
case ActionTypes.PARENT_FILTER:
changed = MiddlePanelStore.registerFilter(action);
changed = MiddlePanelStore.setArticles(action.articles) || changed;
break;
case ActionTypes.MIDDLE_PANEL_FILTER:
changed = MiddlePanelStore.registerFilter(action);
changed = MiddlePanelStore.setArticles(action.articles) || changed;
break;
case ActionTypes.CHANGE_ATTR:
var attr = action.attribute;
var val = action.value_bool;
action.articles.map(function(article) {
for (var i in MiddlePanelStore._datas.articles) {
if(MiddlePanelStore._datas.articles[i].article_id == article.article_id) {
if (MiddlePanelStore._datas.articles[i][attr] != val) {
MiddlePanelStore._datas.articles[i][attr] = val;
// avoiding redraw if not filter, display won't change anyway
if(MiddlePanelStore._datas.filter != 'all') {
changed = true;
}
}
break;
}
}
});
break;
case ActionTypes.LOAD_ARTICLE:
changed = true;
MiddlePanelStore._datas.selected_article = action.article.id;
for (var i in MiddlePanelStore._datas.articles) {
if(MiddlePanelStore._datas.articles[i].article_id == action.article.id) {
MiddlePanelStore._datas.articles[i].read = true;
break;
}
}
break;
default:
// pass
}
if(changed) {MiddlePanelStore.emitChange();}
});
module.exports = MiddlePanelStore;
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