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remoteSearch: Factor out collectFromDatadirsAsync() utility function

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Processing files from a subdirectory of various share/gnome-shell
directories asynchronously is a common enough pattern to share
the common code.

https://bugzilla.gnome.org/show_bug.cgi?id=689304
This commit is contained in:
Florian Müllner 2012-11-30 16:36:12 +01:00
parent 8a17f512f4
commit c528401b62
2 changed files with 100 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
js/misc/fileUtils.js
View File

@ -2,6 +2,8 @@
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Lang = imports.lang;
const Params = imports.misc.params;
function listDirAsync(file, callback) {
let allFiles = [];
@ -23,6 +25,58 @@ function listDirAsync(file, callback) {
});
}
function _collectFromDirectoryAsync(dir, loadState) {
dir.query_info_async('standard:type', Gio.FileQueryInfoFlags.NONE,
GLib.PRIORITY_DEFAULT, null, function(object, res) {
try {
object.query_info_finish(res);
} catch (e) {
if (!e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.NOT_FOUND))
log(e.message);
return;
}
loadState.numLoading++;
listDirAsync(dir, Lang.bind(this, function(infos) {
for (let i = 0; i < infos.length; i++)
loadState.processFile(dir.get_child(infos[i].get_name()),
infos[i], loadState.data);
loadState.numLoading--;
if (loadState.loadedCallback &&
loadState.numLoading == 0)
loadState.loadedCallback(loadState.data);
}));
});
}
function collectFromDatadirsAsync(subdir, params) {
params = Params.parse(params, { includeUserDir: false,
processFile: null,
loadedCallback: null,
data: null });
let loadState = { data: params.data,
numLoading: 0,
loadedCallback: params.loadedCallback,
processFile: params.processFile };
if (params.processFile == null) {
if (params.loadedCallback)
params.loadedCallback(params.data);
return;
}
let dataDirs = GLib.get_system_data_dirs();
if (params.includeUserDir)
dataDirs.unshift(GLib.get_user_data_dir());
for (let i = 0; i < dataDirs.length; i++) {
let path = GLib.build_filenamev([dataDirs[i], 'gnome-shell', subdir]);
let dir = Gio.File.new_for_path(path);
_collectFromDirectoryAsync(dir, loadState);
}
}
function deleteGFile(file) {
// Work around 'delete' being a keyword in JS.
return file['delete'](null);

124
js/ui/remoteSearch.js
View File

@ -32,90 +32,58 @@ const SearchProviderIface = <interface name="org.gnome.Shell.SearchProvider">
var SearchProviderProxy = Gio.DBusProxy.makeProxyWrapper(SearchProviderIface);
function loadRemoteSearchProviders(addProviderCallback) {
let loadState = { loadedProviders: [],
objectPaths: {},
numLoading: 0,
addProviderCallback: addProviderCallback };
let data = { loadedProviders: [],
objectPaths: {},
addProviderCallback: addProviderCallback };
FileUtils.collectFromDatadirsAsync('search-providers',
{ loadedCallback: remoteProvidersLoaded,
processFile: loadRemoteSearchProvider,
data: data
});
}
let dataDirs = GLib.get_system_data_dirs();
for (let i = 0; i < dataDirs.length; i++) {
let path = GLib.build_filenamev([dataDirs[i], 'gnome-shell', 'search-providers']);
let dir = Gio.file_new_for_path(path);
function loadRemoteSearchProvider(file, info, data) {
let keyfile = new GLib.KeyFile();
let path = file.get_path();
dir.query_info_async('standard:type', Gio.FileQueryInfoFlags.NONE,
GLib.PRIORITY_DEFAULT, null,
function(object, res) {
let exists = false;
try {
object.query_info_finish(res);
exists = true;
} catch (e) {
}
if (!exists)
return;
loadState.numLoading++;
loadRemoteSearchProvidersFromDir(dir, loadState);
});
try {
keyfile.load_from_file(path, 0);
} catch(e) {
return;
}
};
function loadRemoteSearchProvidersFromDir(dir, loadState) {
let dirPath = dir.get_path();
FileUtils.listDirAsync(dir, Lang.bind(this, function(files) {
for (let i = 0; i < files.length; i++) {
let keyfile = new GLib.KeyFile();
let path = GLib.build_filenamev([dirPath, files[i].get_name()]);
try {
keyfile.load_from_file(path, 0);
} catch(e) {
continue;
}
if (!keyfile.has_group(KEY_FILE_GROUP))
continue;
let remoteProvider;
try {
let group = KEY_FILE_GROUP;
let busName = keyfile.get_string(group, 'BusName');
let objectPath = keyfile.get_string(group, 'ObjectPath');
if (loadState.objectPaths[objectPath])
continue;
let appInfo = null;
try {
let desktopId = keyfile.get_string(group, 'DesktopId');
appInfo = Gio.DesktopAppInfo.new(desktopId);
} catch (e) {
log('Ignoring search provider ' + path + ': missing DesktopId');
continue;
}
remoteProvider = new RemoteSearchProvider(appInfo,
busName,
objectPath);
loadState.objectPaths[objectPath] = remoteProvider;
loadState.loadedProviders.push(remoteProvider);
} catch(e) {
log('Failed to add search provider %s: %s'.format(path, e.toString()));
continue;
}
}
remoteProvidersDirLoaded(loadState);
}));
};
function remoteProvidersDirLoaded(loadState) {
loadState.numLoading--;
if (loadState.numLoading > 0)
if (!keyfile.has_group(KEY_FILE_GROUP))
return;
let remoteProvider;
try {
let group = KEY_FILE_GROUP;
let busName = keyfile.get_string(group, 'BusName');
let objectPath = keyfile.get_string(group, 'ObjectPath');
if (data.objectPaths[objectPath])
return;
let appInfo = null;
try {
let desktopId = keyfile.get_string(group, 'DesktopId');
appInfo = Gio.DesktopAppInfo.new(desktopId);
} catch (e) {
log('Ignoring search provider ' + path + ': missing DesktopId');
return;
}
remoteProvider = new RemoteSearchProvider(appInfo,
busName,
objectPath);
data.objectPaths[objectPath] = remoteProvider;
data.loadedProviders.push(remoteProvider);
} catch(e) {
log('Failed to add search provider %s: %s'.format(path, e.toString()));
}
}
function remoteProvidersLoaded(loadState) {
let searchSettings = new Gio.Settings({ schema: Search.SEARCH_PROVIDERS_SCHEMA });
let sortOrder = searchSettings.get_strv('sort-order');
let numSorted = sortOrder.length;