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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
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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);