gnome-shell/js/ui/appDisplay.js

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/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const Gtk = imports.gi.Gtk;
const Gdk = imports.gi.Gdk;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const GenericDisplay = imports.ui.genericDisplay;
// TODO - move this into GConf once we're not a plugin anymore
// but have taken over metacity
// This list is taken from GNOME Online popular applications
// http://online.gnome.org/applications
// but with nautilus removed (since it should already be running)
// and evince, totem, and gnome-file-roller removed (since they're
// usually started by opening documents, not by opening the app
// directly)
const DEFAULT_APPLICATIONS = [
'mozilla-firefox.desktop',
'gnome-terminal.desktop',
'evolution.desktop',
'gedit.desktop',
'mozilla-thunderbird.desktop',
'rhythmbox.desktop',
'epiphany.desktop',
'xchat.desktop',
'openoffice.org-1.9-writer.desktop',
'emacs.desktop',
'gnome-system-monitor.desktop',
'openoffice.org-1.9-calc.desktop',
'eclipse.desktop',
'openoffice.org-1.9-impress.desktop',
'vncviewer.desktop'
];
/* This class represents a single display item containing information about an application.
*
* appInfo - GAppInfo object containing information about the application
* availableWidth - total width available for the item
*/
function AppDisplayItem(appInfo, availableWidth) {
this._init(appInfo, availableWidth);
}
AppDisplayItem.prototype = {
__proto__: GenericDisplay.GenericDisplayItem.prototype,
_init : function(appInfo, availableWidth) {
GenericDisplay.GenericDisplayItem.prototype._init.call(this, availableWidth);
this._appInfo = appInfo;
let name = appInfo.get_name();
let description = appInfo.get_description();
let iconTheme = Gtk.IconTheme.get_default();
let icon = new Clutter.Texture({ width: GenericDisplay.ITEM_DISPLAY_ICON_SIZE, height: GenericDisplay.ITEM_DISPLAY_ICON_SIZE});
let gicon = appInfo.get_icon();
let path = null;
if (gicon != null) {
let iconinfo = iconTheme.lookup_by_gicon(gicon, GenericDisplay.ITEM_DISPLAY_ICON_SIZE, Gtk.IconLookupFlags.NO_SVG);
if (iconinfo)
path = iconinfo.get_filename();
}
if (path) {
try {
icon.set_from_file(path);
icon.x = GenericDisplay.ITEM_DISPLAY_PADDING;
icon.y = GenericDisplay.ITEM_DISPLAY_PADDING;
} catch (e) {
// we can get an error here if the file path doesn't exist on the system
log('Error loading AppDisplayItem icon ' + e);
}
}
this._setItemInfo(name, description, icon);
},
//// Public methods ////
// Returns the application info associated with this display item.
getAppInfo : function () {
return this._appInfo;
},
//// Public method overrides ////
// Opens an application represented by this display item.
launch : function() {
let global = Shell.Global.get();
let screen = global.screen;
let display = screen.get_display();
let timestamp = display.get_current_time();
let context = new Gdk.AppLaunchContext();
let icon = this._appInfo.get_icon();
context.set_icon(icon);
context.set_timestamp(timestamp);
this._appInfo.launch([], context);
}
};
/* This class represents a display containing a collection of application items.
* The applications are sorted based on their popularity by default, and based on
* their name if some search filter is applied.
*
* width - width available for the display
* height - height available for the display
*/
function AppDisplay(width, height, numberOfColumns, columnGap) {
this._init(width, height, numberOfColumns, columnGap);
}
AppDisplay.prototype = {
__proto__: GenericDisplay.GenericDisplay.prototype,
_init : function(width, height, numberOfColumns, columnGap) {
GenericDisplay.GenericDisplay.prototype._init.call(this, width, height, numberOfColumns, columnGap);
// map<itemId, array of category names>
this._categories = {};
let me = this;
this._appMonitor = new Shell.AppMonitor();
this._appsStale = true;
this._appMonitor.connect('changed', function(mon) {
me._appsStale = true;
// We still need to determine what events other than search can trigger
// a change in the set of applications that are being shown while the
// user in in the overlay mode, however let's redisplay just in case.
me._redisplay(false);
});
// Load the GAppInfos now so it doesn't slow down the first
// transition into the overlay
this._refreshCache();
},
//// Protected method overrides ////
// Gets information about all applications by calling Gio.app_info_get_all().
_refreshCache : function() {
let me = this;
if (!this._appsStale)
return;
this._allItems = {};
this._categories = {};
let apps = Gio.app_info_get_all();
for (let i = 0; i < apps.length; i++) {
let appInfo = apps[i];
if (!appInfo.should_show())
continue;
let appId = appInfo.get_id();
this._allItems[appId] = appInfo;
// [] is returned if we could not get the categories or the list of categories was empty
let categories = Shell.get_categories_for_desktop_file(appId);
this._categories[appId] = categories;
}
this._appsStale = false;
},
// Sets the list of the displayed items based on the list of DEFAULT_APPLICATIONS.
_setDefaultList : function() {
this._matchedItems = [];
for (let i = 0; i < DEFAULT_APPLICATIONS.length; i++) {
let appId = DEFAULT_APPLICATIONS[i];
let appInfo = this._allItems[appId];
if (appInfo) {
this._matchedItems.push(appId);
}
}
},
// Compares items associated with the item ids based on the alphabetical order
// of the item names.
// Returns an integer value indicating the result of the comparison.
_compareItems : function(itemIdA, itemIdB) {
let appA = this._allItems[itemIdA];
let appB = this._allItems[itemIdB];
return appA.get_name().localeCompare(appB.get_name());
},
// Checks if the item info can be a match for the search string by checking
// the name, description, execution command, and categories for the application.
// Item info is expected to be GAppInfo.
// Returns a boolean flag indicating if itemInfo is a match.
_isInfoMatching : function(itemInfo, search) {
if (search == null || search == '')
return true;
let name = itemInfo.get_name().toLowerCase();
if (name.indexOf(search) >= 0)
return true;
let description = itemInfo.get_description();
if (description) {
description = description.toLowerCase();
if (description.indexOf(search) >= 0)
return true;
}
if (itemInfo.get_executable() == null) {
log("Missing an executable for " + itemInfo.get_name());
} else {
let exec = itemInfo.get_executable().toLowerCase();
if (exec.indexOf(search) >= 0)
return true;
}
// we expect this._categories.hasOwnProperty(itemInfo.get_id()) to always be true here
let categories = this._categories[itemInfo.get_id()];
for (let i = 0; i < categories.length; i++) {
let category = categories[i].toLowerCase();
if (category.indexOf(search) >= 0)
return true;
}
return false;
},
// Creates an AppDisplayItem based on itemInfo, which is expected be a GAppInfo object.
_createDisplayItem: function(itemInfo) {
return new AppDisplayItem(itemInfo, this._columnWidth);
}
};
Signals.addSignalMethods(AppDisplay.prototype);