438 lines
15 KiB
JavaScript
438 lines
15 KiB
JavaScript
/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
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const Big = imports.gi.Big;
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const Clutter = imports.gi.Clutter;
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const Gio = imports.gi.Gio;
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const GLib = imports.gi.GLib;
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const Lang = imports.lang;
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const Mainloop = imports.mainloop;
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const Meta = imports.gi.Meta;
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const St = imports.gi.St;
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const Shell = imports.gi.Shell;
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const Signals = imports.signals;
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const Gettext = imports.gettext.domain('gnome-shell');
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const _ = Gettext.gettext;
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const Lightbox = imports.ui.lightbox;
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const Main = imports.ui.main;
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const MAX_FILE_DELETED_BEFORE_INVALID = 10;
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const HISTORY_KEY = 'run_dialog/history';
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const HISTORY_LIMIT = 512;
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function CommandCompleter() {
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this._init();
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}
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CommandCompleter.prototype = {
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_init : function() {
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this._changedCount = 0;
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this._paths = GLib.getenv('PATH').split(':');
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this._paths.push(GLib.get_home_dir());
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this._valid = false;
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this._updateInProgress = false;
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this._childs = new Array(this._paths.length);
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this._monitors = new Array(this._paths.length);
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for (let i = 0; i < this._paths.length; i++) {
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this._childs[i] = [];
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let file = Gio.file_new_for_path(this._paths[i]);
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let info;
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try {
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info = file.query_info(Gio.FILE_ATTRIBUTE_STANDARD_TYPE, Gio.FileQueryInfoFlags.NONE, null);
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} catch (e) {
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// FIXME catchall
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this._paths[i] = null;
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continue;
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}
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if (info.get_attribute_uint32(Gio.FILE_ATTRIBUTE_STANDARD_TYPE) != Gio.FileType.DIRECTORY)
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continue;
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this._paths[i] = file.get_path();
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this._monitors[i] = file.monitor_directory(Gio.FileMonitorFlags.NONE, null);
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if (this._monitors[i] != null) {
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this._monitors[i].connect("changed", Lang.bind(this, this._onChanged));
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}
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}
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this._paths = this._paths.filter(function(a) {
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return a != null;
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});
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this._update(0);
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},
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_onGetEnumerateComplete : function(obj, res) {
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this._enumerator = obj.enumerate_children_finish(res);
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this._enumerator.next_files_async(100, GLib.PRIORITY_LOW, null, Lang.bind(this, this._onNextFileComplete));
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},
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_onNextFileComplete : function(obj, res) {
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let files = obj.next_files_finish(res);
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for (let i = 0; i < files.length; i++) {
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this._childs[this._i].push(files[i].get_name());
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}
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if (files.length) {
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this._enumerator.next_files_async(100, GLib.PRIORITY_LOW, null, Lang.bind(this, this._onNextFileComplete));
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} else {
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this._enumerator.close(null);
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this._enumerator = null;
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this._update(this._i + 1);
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}
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},
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update : function() {
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if (this._valid)
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return;
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this._update(0);
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},
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_update : function(i) {
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if (i == 0 && this._updateInProgress)
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return;
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this._updateInProgress = true;
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this._changedCount = 0;
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this._i = i;
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if (i >= this._paths.length) {
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this._valid = true;
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this._updateInProgress = false;
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return;
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}
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let file = Gio.file_new_for_path(this._paths[i]);
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this._childs[this._i] = [];
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file.enumerate_children_async(Gio.FILE_ATTRIBUTE_STANDARD_NAME, Gio.FileQueryInfoFlags.NONE, GLib.PRIORITY_LOW, null, Lang.bind(this, this._onGetEnumerateComplete));
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},
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_onChanged : function(m, f, of, type) {
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if (!this._valid)
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return;
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let path = f.get_parent().get_path();
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let k = undefined;
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for (let i = 0; i < this._paths.length; i++) {
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if (this._paths[i] == path)
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k = i;
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}
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if (k === undefined) {
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return;
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}
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if (type == Gio.FileMonitorEvent.CREATED) {
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this._childs[k].push(f.get_basename());
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}
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if (type == Gio.FileMonitorEvent.DELETED) {
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this._changedCount++;
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if (this._changedCount > MAX_FILE_DELETED_BEFORE_INVALID) {
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this._valid = false;
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}
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let name = f.get_basename();
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this._childs[k] = this._childs[k].filter(function(e) {
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return e != name;
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});
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}
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if (type == Gio.FileMonitorEvent.UNMOUNTED) {
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this._childs[k] = [];
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}
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},
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getCompletion: function(text) {
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let common = "";
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let notInit = true;
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if (!this._valid) {
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this._update(0);
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return common;
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}
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function _getCommon(s1, s2) {
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let k = 0;
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for (; k < s1.length && k < s2.length; k++) {
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if (s1[k] != s2[k])
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break;
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}
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if (k == 0)
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return "";
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return s1.substr(0, k);
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}
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function _hasPrefix(s1, prefix) {
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return s1.indexOf(prefix) == 0;
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}
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for (let i = 0; i < this._childs.length; i++) {
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for (let k = 0; k < this._childs[i].length; k++) {
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if (!_hasPrefix(this._childs[i][k], text))
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continue;
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if (notInit) {
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common = this._childs[i][k];
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notInit = false;
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}
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common = _getCommon(common, this._childs[i][k]);
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}
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}
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if (common.length)
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return common.substr(text.length);
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return common;
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}
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};
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function RunDialog() {
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this._init();
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}
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RunDialog.prototype = {
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_init : function() {
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this._isOpen = false;
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this._gconf = Shell.GConf.get_default();
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this._gconf.connect('changed::development_tools', Lang.bind(this, function () {
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this._enableInternalCommands = this._gconf.get_boolean('development_tools');
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}));
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this._enableInternalCommands = this._gconf.get_boolean('development_tools');
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this._history = this._gconf.get_string_list(HISTORY_KEY);
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this._historyIndex = -1;
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this._gconf.connect('changed::' + HISTORY_KEY, Lang.bind(this, function() {
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this._history = this._gconf.get_string_list(HISTORY_KEY);
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this._historyIndex = this._history.length;
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}));
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this._internalCommands = { 'lg':
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Lang.bind(this, function() {
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Main.createLookingGlass().open();
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}),
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'r': Lang.bind(this, function() {
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global.reexec_self();
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}),
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// Developer brain backwards compatibility
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'restart': Lang.bind(this, function() {
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global.reexec_self();
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}),
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'debugexit': Lang.bind(this, function() {
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Meta.exit(Meta.ExitCode.ERROR);
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})
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};
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// All actors are inside _group. We create it initially
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// hidden then show it in show()
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this._group = new Clutter.Group({ visible: false,
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x: 0, y: 0 });
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global.stage.add_actor(this._group);
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let lightbox = new Lightbox.Lightbox(this._group, true);
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this._box = new St.Bin({ x_align: St.Align.MIDDLE,
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y_align: St.Align.MIDDLE });
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this._group.add_actor(this._box);
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lightbox.highlight(this._box);
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let dialogBox = new St.BoxLayout({ style_class: 'run-dialog', vertical: true });
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this._box.set_child(dialogBox);
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let label = new St.Label({ style_class: 'run-dialog-label',
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text: _("Please enter a command:") });
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dialogBox.add(label, { expand: true, y_fill: false });
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let entry = new St.Entry({ style_class: 'run-dialog-entry' });
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this._entryText = entry.clutter_text;
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dialogBox.add(entry, { expand: true });
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this._errorBox = new St.BoxLayout();
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dialogBox.add(this._errorBox, { expand: true });
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let errorIcon = new St.Button({ style_class: 'run-dialog-error-icon' });
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this._errorBox.add(errorIcon);
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this._commandError = false;
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this._errorMessage = new St.Label({ style_class: 'run-dialog-error-label' });
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this._errorMessage.clutter_text.line_wrap = true;
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this._errorBox.add(this._errorMessage, { expand: true });
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this._errorBox.hide();
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this._pathCompleter = new Gio.FilenameCompleter();
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this._commandCompleter = new CommandCompleter();
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this._group.connect('notify::visible', Lang.bind(this._commandCompleter, this._commandCompleter.update));
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this._entryText.connect('key-press-event', Lang.bind(this, function(o, e) {
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let symbol = e.get_key_symbol();
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if (symbol == Clutter.Down) {
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this._setCommandFromHistory(this._historyIndex++);
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return true;
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}
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if (symbol == Clutter.Up) {
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this._setCommandFromHistory(this._historyIndex--);
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return true;
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}
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if (symbol == Clutter.Return || symbol == Clutter.KP_Enter) {
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if (Shell.get_event_state(e) & Clutter.ModifierType.CONTROL_MASK)
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this._run(o.get_text(), true);
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else
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this._run(o.get_text(), false);
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if (!this._commandError)
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this.close();
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}
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if (symbol == Clutter.Escape) {
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this.close();
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return true;
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}
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if (symbol == Clutter.slash) {
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// Need preload data before get completion. GFilenameCompleter load content of parent directory.
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// Parent directory for /usr/include/ is /usr/. So need to add fake name('a').
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let text = o.get_text().concat('/a');
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let prefix;
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if (text.lastIndexOf(' ') == -1)
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prefix = text;
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else
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prefix = text.substr(text.lastIndexOf(' ') + 1);
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this._getCompletion(prefix);
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return false;
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}
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if (symbol == Clutter.Tab) {
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let text = o.get_text();
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let prefix;
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if (text.lastIndexOf(' ') == -1)
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prefix = text;
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else
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prefix = text.substr(text.lastIndexOf(' ') + 1);
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let postfix = this._getCompletion(prefix);
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if (postfix != null && postfix.length > 0) {
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o.insert_text(postfix, -1);
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o.set_cursor_position(text.length + postfix.length);
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if (postfix[postfix.length - 1] == '/')
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this._getCompletion(text + postfix + 'a');
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}
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return true;
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}
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return false;
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}));
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},
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_getCompletion : function(text) {
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if (text.indexOf('/') != -1) {
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return this._pathCompleter.get_completion_suffix(text);
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} else {
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return this._commandCompleter.getCompletion(text);
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}
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},
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_saveHistory : function() {
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if (this._history.length > HISTORY_LIMIT) {
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this._history.splice(0, this._history.length - HISTORY_LIMIT);
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}
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this._gconf.set_string_list(HISTORY_KEY, this._history);
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},
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_run : function(input, inTerminal) {
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let command = input;
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if (this._history.length > 0 && this._history[this._history.length - 1] != input) {
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this._history.push(input);
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this._saveHistory();
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}
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this._commandError = false;
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let f;
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if (this._enableInternalCommands)
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f = this._internalCommands[input];
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else
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f = null;
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if (f) {
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f();
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} else if (input) {
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try {
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if (inTerminal)
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command = 'gnome-terminal -x ' + input;
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let [ok, len, args] = GLib.shell_parse_argv(command);
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let p = new Shell.Process({ 'args' : args });
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p.run();
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} catch (e) {
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// Mmmh, that failed - see if @input matches an existing file
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let path = null;
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if (input.charAt(0) == '/') {
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path = input;
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} else {
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if (input.charAt(0) == '~')
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input = input.slice(1);
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path = GLib.get_home_dir() + '/' + input;
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}
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if (GLib.file_test(path, GLib.FileTest.EXISTS)) {
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let file = Gio.file_new_for_path(path);
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Gio.app_info_launch_default_for_uri(file.get_uri(),
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global.create_app_launch_context());
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} else {
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this._commandError = true;
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// The exception contains an error string like:
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// Error invoking Shell.run: Failed to execute child
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// process "foo" (No such file or directory)
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// We are only interested in the actual error, so parse
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//that out.
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let m = /.+\((.+)\)/.exec(e);
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let errorStr = _("Execution of '%s' failed:").format(command) + "\n" + m[1];
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this._errorMessage.set_text(errorStr);
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this._errorBox.show();
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}
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}
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}
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},
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_setCommandFromHistory: function(lastI) {
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if (this._historyIndex < 0)
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this._historyIndex = 0;
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if (this._historyIndex > this._history.length)
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this._historyIndex = this._history.length;
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let text = this._entryText.get_text();
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if (text) {
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this._history[lastI] = text;
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}
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if (this._history[this._historyIndex]) {
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this._entryText.set_text(this._history[this._historyIndex]);
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} else
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this._entryText.set_text('');
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},
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open : function() {
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if (this._isOpen) // Already shown
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return;
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if (!Main.pushModal(this._group))
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return;
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// Position the dialog on the current monitor
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let monitor = global.get_focus_monitor();
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this._historyIndex = this._history.length;
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this._box.set_position(monitor.x, monitor.y);
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this._box.set_size(monitor.width, monitor.height);
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this._isOpen = true;
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this._group.show();
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global.stage.set_key_focus(this._entryText);
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},
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close : function() {
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if (!this._isOpen)
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return;
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this._isOpen = false;
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this._errorBox.hide();
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this._commandError = false;
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this._group.hide();
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this._entryText.set_text('');
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Main.popModal(this._group);
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}
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};
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Signals.addSignalMethods(RunDialog.prototype);
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