themeTplTags.getPageParent = function(screen) {
var parent = null;
if (themeTplTags.isTreePage(screen)) {
var parent_id = getPageTreeData('parent',screen);
if (parent_id > 0) {
parent = App.getGlobalItem('pages', parent_id);
}
}
return parent;
};
themeTplTags.getPreviousPage = function(screen) {
var previous_page = null;
if (themeTplTags.isTreePage(screen)) {
var screen_data = screen !== undefined ? screen : App.getCurrentScreenData();
var siblings_ids = getPageTreeData('siblings', screen);
var page_index = siblings_ids.indexOf(screen_data.item_id);
if (page_index != -1 && page_index > 0) {
previous_page = App.getGlobalItem('pages', siblings_ids[page_index - 1]);
}
}
return previous_page;
};
themeTplTags.getNextPage = function(screen) {
var next_page = null;
if (themeTplTags.isTreePage(screen)) {
var screen_data = screen !== undefined ? screen : App.getCurrentScreenData();
var siblings_ids = getPageTreeData('siblings',screen);
var page_index = siblings_ids.indexOf(screen_data.item_id);
if (page_index != -1 && page_index < (siblings_ids.length - 1)) {
next_page = App.getGlobalItem('pages', siblings_ids[page_index + 1]);
}
}
return next_page;
};
themeApp.getItem = function( item_id, global_key ) {
global_key = global_key || 'posts';
return App.getGlobalItem( global_key, item_id );
};