gnome-shell/js/ui/runDialog.js

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/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Big = imports.gi.Big;
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const Gettext = imports.gettext.domain('gnome-shell');
const _ = Gettext.gettext;
const Lightbox = imports.ui.lightbox;
const Main = imports.ui.main;
const BOX_BACKGROUND_COLOR = new Clutter.Color();
BOX_BACKGROUND_COLOR.from_pixel(0x000000cc);
const BOX_TEXT_COLOR = new Clutter.Color();
BOX_TEXT_COLOR.from_pixel(0xffffffff);
const DIALOG_WIDTH = 320;
const DIALOG_PADDING = 6;
const ICON_SIZE = 24;
const ICON_BOX_SIZE = 36;
const MAX_FILE_DELETED_BEFORE_INVALID = 10;
function CommandCompleter() {
this._init();
}
CommandCompleter.prototype = {
_init : function() {
this._changedCount = 0;
this._paths = GLib.getenv('PATH').split(':');
this._valid = false;
this._updateInProgress = false;
this._childs = new Array(this._paths.length);
this._monitors = new Array(this._paths.length);
for (let i = 0; i < this._paths.length; i++) {
this._childs[i] = [];
let file = Gio.file_new_for_path(this._paths[i]);
let info;
try {
info = file.query_info(Gio.FILE_ATTRIBUTE_STANDARD_TYPE, Gio.FileQueryInfoFlags.NONE, null);
} catch (e) {
// FIXME catchall
this._paths[i] = null;
continue;
}
if (info.get_attribute_uint32(Gio.FILE_ATTRIBUTE_STANDARD_TYPE) != Gio.FileType.DIRECTORY)
continue;
this._paths[i] = file.get_path();
this._monitors[i] = file.monitor_directory(Gio.FileMonitorFlags.NONE, null);
if (this._monitors[i] != null) {
this._monitors[i].connect("changed", Lang.bind(this, this._onChanged));
}
}
this._paths = this._paths.filter(function(a) {
return a != null;
});
this._update(0);
},
_onGetEnumerateComplete : function(obj, res) {
this._enumerator = obj.enumerate_children_finish(res);
this._enumerator.next_files_async(100, GLib.PRIORITY_LOW, null, Lang.bind(this, this._onNextFileComplete), null);
},
_onNextFileComplete : function(obj, res) {
let files = obj.next_files_finish(res);
for (let i = 0; i < files.length; i++) {
this._childs[this._i].push(files[i].get_name());
}
if (files.length) {
this._enumerator.next_files_async(100, GLib.PRIORITY_LOW, null, Lang.bind(this, this._onNextFileComplete), null);
} else {
this._enumerator.close(null);
this._enumerator = null;
this._update(this._i + 1);
}
},
update : function() {
if (this._valid)
return;
this._update(0);
},
_update : function(i) {
if (i == 0 && this._updateInProgress)
return;
this._updateInProgress = true;
this._changedCount = 0;
this._i = i;
if (i >= this._paths.length) {
this._valid = true;
this._updateInProgress = false;
return;
}
let file = Gio.file_new_for_path(this._paths[i]);
this._childs[this._i] = [];
file.enumerate_children_async(Gio.FILE_ATTRIBUTE_STANDARD_NAME, Gio.FileQueryInfoFlags.NONE, GLib.PRIORITY_LOW, null, Lang.bind(this, this._onGetEnumerateComplete), null);
},
_onChanged : function(m, f, of, type) {
if (!this._valid)
return;
let path = f.get_parent().get_path();
let k = undefined;
for (let i = 0; i < this._paths.length; i++) {
if (this._paths[i] == path)
k = i;
}
if (k === undefined) {
return;
}
if (type == Gio.FileMonitorEvent.CREATED) {
this._childs[k].push(f.get_basename());
}
if (type == Gio.FileMonitorEvent.DELETED) {
this._changedCount++;
if (this._changedCount > MAX_FILE_DELETED_BEFORE_INVALID) {
this._valid = false;
}
let name = f.get_basename();
this._childs[k] = this._childs[k].filter(function(e) {
return e != name;
});
}
if (type == Gio.FileMonitorEvent.UNMOUNTED) {
this._childs[k] = [];
}
},
getCompletion: function(text) {
let common = "";
let notInit = true;
if (!this._valid) {
this._update(0);
return common;
}
function _getCommon(s1, s2) {
let k = 0;
for (; k < s1.length && k < s2.length; k++) {
if (s1[k] != s2[k])
break;
}
if (k == 0)
return "";
return s1.substr(0, k);
}
function _hasPrefix(s1, prefix) {
return s1.indexOf(prefix) == 0;
}
for (let i = 0; i < this._childs.length; i++) {
for (let k = 0; k < this._childs[i].length; k++) {
if (!_hasPrefix(this._childs[i][k], text))
continue;
if (notInit) {
common = this._childs[i][k];
notInit = false;
}
common = _getCommon(common, this._childs[i][k]);
}
}
if (common.length)
return common.substr(text.length);
return common;
}
};
function RunDialog() {
this._init();
};
RunDialog.prototype = {
_init : function() {
this._isOpen = false;
let gconf = Shell.GConf.get_default();
gconf.connect('changed::development_tools', Lang.bind(this, function () {
this._enableInternalCommands = gconf.get_boolean('development_tools');
}));
this._enableInternalCommands = gconf.get_boolean('development_tools');
this._internalCommands = { 'lg':
Lang.bind(this, function() {
Main.createLookingGlass().open();
}),
'r': Lang.bind(this, function() {
global.reexec_self();
}),
// Developer brain backwards compatibility
'restart': Lang.bind(this, function() {
global.reexec_self();
}),
'debugexit': Lang.bind(this, function() {
Meta.exit(Meta.ExitCode.ERROR);
})
};
// All actors are inside _group. We create it initially
// hidden then show it in show()
this._group = new Clutter.Group({ visible: false,
x: 0,
y: 0,
width: global.screen_width,
height: global.screen_height });
global.stage.add_actor(this._group);
let lightbox = new Lightbox.Lightbox(this._group, true);
this._boxH = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
x_align: Big.BoxAlignment.CENTER,
y_align: Big.BoxAlignment.CENTER });
this._group.add_actor(this._boxH);
lightbox.highlight(this._boxH);
let boxV = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
y_align: Big.BoxAlignment.CENTER });
this._boxH.append(boxV, Big.BoxPackFlags.NONE);
let dialogBox = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
background_color: BOX_BACKGROUND_COLOR,
corner_radius: 4,
reactive: false,
padding: DIALOG_PADDING,
width: DIALOG_WIDTH });
this._boxH.append(dialogBox, Big.BoxPackFlags.NONE);
let label = new Clutter.Text({ color: BOX_TEXT_COLOR,
font_name: '18px Sans',
text: _("Please enter a command:") });
dialogBox.append(label, Big.BoxPackFlags.EXPAND);
this._entry = new Clutter.Text({ color: BOX_TEXT_COLOR,
font_name: '20px Sans Bold',
editable: true,
activatable: true,
singleLineMode: true });
dialogBox.append(this._entry, Big.BoxPackFlags.EXPAND);
this._errorBox = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
padding_top: DIALOG_PADDING });
dialogBox.append(this._errorBox, Big.BoxPackFlags.EXPAND);
let iconBox = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
y_align: Big.BoxAlignment.CENTER,
x_align: Big.BoxAlignment.CENTER,
width: ICON_BOX_SIZE,
height: ICON_BOX_SIZE });
this._errorBox.append(iconBox, Big.BoxPackFlags.NONE);
this._commandError = false;
let errorIcon = Shell.TextureCache.get_default().load_icon_name("gtk-dialog-error", ICON_SIZE);
iconBox.append(errorIcon, Big.BoxPackFlags.EXPAND);
this._errorMessage = new Clutter.Text({ color: BOX_TEXT_COLOR,
font_name: '18px Sans Bold',
line_wrap: true });
this._errorBox.append(this._errorMessage, Big.BoxPackFlags.EXPAND);
this._errorBox.hide();
this._entry.connect('activate', Lang.bind(this, function (o, e) {
this._run(o.get_text());
if (!this._commandError)
this.close();
}));
this._pathCompleter = new Gio.FilenameCompleter();
this._commandCompleter = new CommandCompleter();
this._group.connect('notify::visible', Lang.bind(this._commandCompleter, this._commandCompleter.update));
this._entry.connect('key-press-event', Lang.bind(this, function(o, e) {
let symbol = e.get_key_symbol();
if (symbol == Clutter.Escape) {
this.close();
return true;
}
if (symbol == Clutter.slash) {
// Need preload data before get completion. GFilenameCompleter load content of parent directory.
// Parent directory for /usr/include/ is /usr/. So need to add fake name('a').
let text = o.get_text().concat('/a');
let prefix;
if (text.lastIndexOf(' ') == -1)
prefix = text;
else
prefix = text.substr(text.lastIndexOf(' ') + 1);
this._getCompletion(prefix);
return false;
}
if (symbol == Clutter.Tab) {
let text = o.get_text();
let prefix;
if (text.lastIndexOf(' ') == -1)
prefix = text;
else
prefix = text.substr(text.lastIndexOf(' ') + 1);
let postfix = this._getCompletion(prefix);
if (postfix != null && postfix.length > 0) {
o.insert_text(postfix, -1);
o.set_cursor_position(text.length + postfix.length);
if (postfix[postfix.length - 1] == '/')
this._getCompletion(text + postfix + 'a');
}
return true;
}
return false;
}));
},
_getCompletion : function(text) {
if (text.indexOf('/') != -1) {
return this._pathCompleter.get_completion_suffix(text);
} else {
return this._commandCompleter.getCompletion(text);
}
},
_run : function(command) {
this._commandError = false;
let f;
if (this._enableInternalCommands)
f = this._internalCommands[command];
else
f = null;
if (f) {
f();
} else if (command) {
try {
let [ok, len, args] = GLib.shell_parse_argv(command);
let p = new Shell.Process({'args' : args});
p.run();
} catch (e) {
this._commandError = true;
/*
* The exception contains an error string like:
* Error invoking Shell.run: Failed to execute child process "foo"
* (No such file or directory)
* We are only interested in the actual error, so parse that out.
*/
let m = /.+\((.+)\)/.exec(e);
let errorStr = _("Execution of '%s' failed:").format(command) + "\n" + m[1];
this._errorMessage.set_text(errorStr);
this._errorBox.show();
}
}
},
open : function() {
if (this._isOpen) // Already shown
return;
if (!Main.pushModal(this._group))
return;
// Position the dialog on the current monitor
let monitor = global.get_focus_monitor();
this._boxH.set_position(monitor.x, monitor.y);
this._boxH.set_size(monitor.width, monitor.height);
this._isOpen = true;
this._group.show();
global.stage.set_key_focus(this._entry);
},
close : function() {
if (!this._isOpen)
return;
this._isOpen = false;
this._errorBox.hide();
this._commandError = false;
this._group.hide();
this._entry.set_text('');
Main.popModal(this._group);
}
};
Signals.addSignalMethods(RunDialog.prototype);