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remoteSearch: Load remote search providers synchronously

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As we only reload search providers on startup or when the sort order changes,
and given the small number of search providers we'll actually load, I doubt
we'll see any speed decrease.

The simplicity of synchronous code is also much clearer, and fully avoids
all the possible bugs about in-flight requests or similar.

This also prevents issues with multiple search providers showing up at once,
which happen when multiple requests to reload search providers get called
immediately, with the existing in-flight async requests never cancelled.

https://bugzilla.gnome.org/show_bug.cgi?id=700283
This commit is contained in:
Jasper St. Pierre 2013-07-26 18:36:31 -04:00
parent 4efd363134
commit be961cd60e
1 changed files with 77 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

156
js/ui/remoteSearch.js
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@ -7,7 +7,6 @@ const Lang = imports.lang;
const St = imports.gi.St;
const Shell = imports.gi.Shell;
const FileUtils = imports.misc.fileUtils;
const Search = imports.ui.search;
const KEY_FILE_GROUP = 'Shell Search Provider';
@ -60,108 +59,107 @@ var SearchProviderProxy = Gio.DBusProxy.makeProxyWrapper(SearchProviderIface);
var SearchProvider2Proxy = Gio.DBusProxy.makeProxyWrapper(SearchProvider2Iface);
function loadRemoteSearchProviders(addProviderCallback) {
let data = { loadedProviders: [],
objectPaths: {},
addProviderCallback: addProviderCallback };
FileUtils.collectFromDatadirsAsync('search-providers',
{ loadedCallback: remoteProvidersLoaded,
processFile: loadRemoteSearchProvider,
data: data
});
}
let objectPaths = {};
let loadedProviders = [];
function loadRemoteSearchProvider(file, info, data) {
let keyfile = new GLib.KeyFile();
let path = file.get_path();
function loadRemoteSearchProvider(file) {
let keyfile = new GLib.KeyFile();
let path = file.get_path();
try {
keyfile.load_from_file(path, 0);
} catch(e) {
return;
}
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');
keyfile.load_from_file(path, 0);
} catch(e) {
return;
}
let version = '1';
if (!keyfile.has_group(KEY_FILE_GROUP))
return;
let remoteProvider;
try {
version = keyfile.get_string(group, 'Version');
} catch (e) {
// ignore error
let group = KEY_FILE_GROUP;
let busName = keyfile.get_string(group, 'BusName');
let objectPath = keyfile.get_string(group, 'ObjectPath');
if (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;
}
let version = '1';
try {
version = keyfile.get_string(group, 'Version');
} catch (e) {
// ignore error
}
if (version >= 2)
remoteProvider = new RemoteSearchProvider2(appInfo, busName, objectPath);
else
remoteProvider = new RemoteSearchProvider(appInfo, busName, objectPath);
objectPaths[objectPath] = remoteProvider;
loadedProviders.push(remoteProvider);
} catch(e) {
log('Failed to add search provider %s: %s'.format(path, e.toString()));
}
if (version >= 2)
remoteProvider = new RemoteSearchProvider2(appInfo, busName, objectPath);
else
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 dataDirs = GLib.get_system_data_dirs();
dataDirs.forEach(function(dataDir) {
let path = GLib.build_filenamev([dataDir, 'gnome-shell', 'search-providers']);
let dir = Gio.File.new_for_path(path);
let fileEnum = dir.enumerate_children('standard::name,standard::type',
Gio.FileQueryInfoFlags.NONE, null);
let info;
while ((info = fileEnum.next_file(null)))
loadRemoteSearchProvider(fileEnum.get_child(info));
});
let searchSettings = new Gio.Settings({ schema: Search.SEARCH_PROVIDERS_SCHEMA });
let sortOrder = searchSettings.get_strv('sort-order');
// Special case gnome-control-center to be always active and always first
sortOrder.unshift('gnome-control-center.desktop');
loadState.loadedProviders.sort(
function(providerA, providerB) {
let idxA, idxB;
let appIdA, appIdB;
loadedProviders.sort(function(providerA, providerB) {
let idxA, idxB;
let appIdA, appIdB;
appIdA = providerA.appInfo.get_id();
appIdB = providerB.appInfo.get_id();
appIdA = providerA.appInfo.get_id();
appIdB = providerB.appInfo.get_id();
idxA = sortOrder.indexOf(appIdA);
idxB = sortOrder.indexOf(appIdB);
idxA = sortOrder.indexOf(appIdA);
idxB = sortOrder.indexOf(appIdB);
// if no provider is found in the order, use alphabetical order
if ((idxA == -1) && (idxB == -1)) {
let nameA = providerA.appInfo.get_name();
let nameB = providerB.appInfo.get_name();
// if no provider is found in the order, use alphabetical order
if ((idxA == -1) && (idxB == -1)) {
let nameA = providerA.appInfo.get_name();
let nameB = providerB.appInfo.get_name();
return GLib.utf8_collate(nameA, nameB);
}
return GLib.utf8_collate(nameA, nameB);
}
// if providerA isn't found, it's sorted after providerB
if (idxA == -1)
return 1;
// if providerA isn't found, it's sorted after providerB
if (idxA == -1)
return 1;
// if providerB isn't found, it's sorted after providerA
if (idxB == -1)
return -1;
// if providerB isn't found, it's sorted after providerA
if (idxB == -1)
return -1;
// finally, if both providers are found, return their order in the list
return (idxA - idxB);
});
// finally, if both providers are found, return their order in the list
return (idxA - idxB);
});
loadState.loadedProviders.forEach(
function(provider) {
loadState.addProviderCallback(provider);
});
loadedProviders.forEach(addProviderCallback);
}
const RemoteSearchProvider = new Lang.Class({