gnome-shell/js/ui/viewSelector.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Signals = imports.signals;
const Lang = imports.lang;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const AppDisplay = imports.ui.appDisplay;
const Main = imports.ui.main;
const OverviewControls = imports.ui.overviewControls;
const Params = imports.misc.params;
const Search = imports.ui.search;
const ShellEntry = imports.ui.shellEntry;
const Tweener = imports.ui.tweener;
const WorkspacesView = imports.ui.workspacesView;
const SHELL_KEYBINDINGS_SCHEMA = 'org.gnome.shell.keybindings';
const ViewPage = {
WINDOWS: 1,
APPS: 2,
SEARCH: 3
};
const FocusTrap = new Lang.Class({
Name: 'FocusTrap',
Extends: St.Widget,
vfunc_navigate_focus: function(from, direction) {
if (direction == Gtk.DirectionType.TAB_FORWARD ||
direction == Gtk.DirectionType.TAB_BACKWARD)
return this.parent(from, direction);
return false;
}
});
function getTermsForSearchString(searchString) {
searchString = searchString.replace(/^\s+/g, '').replace(/\s+$/g, '');
if (searchString == '')
return [];
let terms = searchString.split(/\s+/);
return terms;
}
const ViewSelector = new Lang.Class({
Name: 'ViewSelector',
_init : function(searchEntry, showAppsButton) {
this.actor = new Shell.Stack({ name: 'viewSelector' });
this._showAppsBlocked = false;
this._showAppsButton = showAppsButton;
this._showAppsButton.connect('notify::checked', Lang.bind(this, this._onShowAppsButtonToggled));
this._activePage = null;
this._searchActive = false;
this._searchTimeoutId = 0;
this._entry = searchEntry;
ShellEntry.addContextMenu(this._entry);
this._text = this._entry.clutter_text;
this._text.connect('text-changed', Lang.bind(this, this._onTextChanged));
this._text.connect('key-press-event', Lang.bind(this, this._onKeyPress));
this._text.connect('key-focus-in', Lang.bind(this, function() {
this._searchResults.highlightDefault(true);
}));
this._text.connect('key-focus-out', Lang.bind(this, function() {
this._searchResults.highlightDefault(false);
}));
this._entry.connect('notify::mapped', Lang.bind(this, this._onMapped));
global.stage.connect('notify::key-focus', Lang.bind(this, this._onStageKeyFocusChanged));
this._entry.set_primary_icon(new St.Icon({ style_class: 'search-entry-icon',
icon_name: 'edit-find-symbolic' }));
if (this._entry.get_text_direction() == Clutter.TextDirection.RTL)
this._clearIcon = new St.Icon({ style_class: 'search-entry-icon',
icon_name: 'edit-clear-rtl-symbolic' });
else
this._clearIcon = new St.Icon({ style_class: 'search-entry-icon',
icon_name: 'edit-clear-symbolic' });
this._iconClickedId = 0;
this._capturedEventId = 0;
this._workspacesDisplay = new WorkspacesView.WorkspacesDisplay();
this._workspacesPage = this._addPage(this._workspacesDisplay.actor,
_("Windows"), 'emblem-documents-symbolic');
this.appDisplay = new AppDisplay.AppDisplay();
this._appsPage = this._addPage(this.appDisplay.actor,
_("Applications"), 'view-grid-symbolic');
this._searchResults = new Search.SearchResults();
this._searchPage = this._addPage(this._searchResults.actor,
_("Search"), 'edit-find-symbolic',
{ a11yFocus: this._entry });
// Since the entry isn't inside the results container we install this
// dummy widget as the last results container child so that we can
// include the entry in the keynav tab path
this._focusTrap = new FocusTrap({ can_focus: true });
this._focusTrap.connect('key-focus-in', Lang.bind(this, function() {
this._entry.grab_key_focus();
}));
this._searchResults.actor.add_actor(this._focusTrap);
global.focus_manager.add_group(this._searchResults.actor);
this._stageKeyPressId = 0;
Main.overview.connect('showing', Lang.bind(this,
function () {
this._resetShowAppsButton();
this._stageKeyPressId = global.stage.connect('key-press-event',
Lang.bind(this, this._onStageKeyPress));
}));
Main.overview.connect('hiding', Lang.bind(this,
function () {
this._resetShowAppsButton();
if (this._stageKeyPressId != 0) {
global.stage.disconnect(this._stageKeyPressId);
this._stageKeyPressId = 0;
}
}));
Main.wm.addKeybinding('toggle-application-view',
new Gio.Settings({ schema: SHELL_KEYBINDINGS_SCHEMA }),
Meta.KeyBindingFlags.NONE,
Shell.KeyBindingMode.NORMAL |
Shell.KeyBindingMode.OVERVIEW,
Lang.bind(this, this._toggleAppsPage));
Main.wm.addKeybinding('toggle-overview',
new Gio.Settings({ schema: SHELL_KEYBINDINGS_SCHEMA }),
Meta.KeyBindingFlags.NONE,
Shell.KeyBindingMode.NORMAL |
Shell.KeyBindingMode.OVERVIEW,
Lang.bind(Main.overview, Main.overview.toggle));
},
_toggleAppsPage: function() {
Main.overview.show();
this._showAppsButton.checked = !this._showAppsButton.checked;
},
showApps: function() {
Main.overview.show();
this._showAppsButton.checked = true;
},
show: function() {
this.reset();
this._workspacesDisplay.show();
this._activePage = null;
this._showPage(this._workspacesPage);
if (!this._workspacesDisplay.activeWorkspaceHasMaximizedWindows())
Main.overview.fadeOutDesktop();
},
zoomFromOverview: function() {
this._workspacesDisplay.zoomFromOverview();
if (!this._workspacesDisplay.activeWorkspaceHasMaximizedWindows())
Main.overview.fadeInDesktop();
},
setWorkspacesFullGeometry: function(geom) {
this._workspacesDisplay.setWorkspacesFullGeometry(geom);
},
hide: function() {
this._workspacesDisplay.hide();
},
_addPage: function(actor, name, a11yIcon, params) {
params = Params.parse(params, { a11yFocus: null });
let page = new St.Bin({ child: actor,
x_align: St.Align.START,
y_align: St.Align.START,
x_fill: true,
y_fill: true });
if (params.a11yFocus)
Main.ctrlAltTabManager.addGroup(params.a11yFocus, name, a11yIcon);
else
Main.ctrlAltTabManager.addGroup(actor, name, a11yIcon,
{ proxy: this.actor,
focusCallback: Lang.bind(this,
function() {
this._a11yFocusPage(page);
})
});;
page.hide();
this.actor.add_actor(page);
return page;
},
_fadePageIn: function(oldPage) {
if (oldPage)
oldPage.hide();
this.emit('page-empty');
this._activePage.show();
Tweener.addTween(this._activePage,
{ opacity: 255,
time: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME,
transition: 'easeOutQuad'
});
},
_showPage: function(page, noFade) {
if (page == this._activePage)
return;
let oldPage = this._activePage;
this._activePage = page;
this.emit('page-changed');
if (oldPage && !noFade)
Tweener.addTween(oldPage,
{ opacity: 0,
time: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this._fadePageIn(oldPage);
})
});
else
this._fadePageIn(oldPage);
},
_a11yFocusPage: function(page) {
this._showAppsButton.checked = page == this._appsPage;
page.navigate_focus(null, Gtk.DirectionType.TAB_FORWARD, false);
},
_onShowAppsButtonToggled: function() {
if (this._showAppsBlocked)
return;
this._showPage(this._showAppsButton.checked ?
this._appsPage : this._workspacesPage);
},
_resetShowAppsButton: function() {
this._showAppsBlocked = true;
this._showAppsButton.checked = false;
this._showAppsBlocked = false;
this._showPage(this._workspacesPage, true);
},
_onStageKeyPress: function(actor, event) {
// Ignore events while anything but the overview has
// pushed a modal (system modals, looking glass, ...)
if (Main.modalCount > 1)
return Clutter.EVENT_PROPAGATE;
let modifiers = event.get_state();
let symbol = event.get_key_symbol();
if (symbol == Clutter.Escape) {
if (this._searchActive)
this.reset();
else if (this._showAppsButton.checked)
this._showAppsButton.checked = false;
else
Main.overview.hide();
return Clutter.EVENT_STOP;
} else if (this._shouldTriggerSearch(symbol)) {
this.startSearch(event);
} else if (!this._searchActive) {
if (symbol == Clutter.Tab || symbol == Clutter.Down) {
this._activePage.navigate_focus(null, Gtk.DirectionType.TAB_FORWARD, false);
return true;
} else if (symbol == Clutter.ISO_Left_Tab) {
this._activePage.navigate_focus(null, Gtk.DirectionType.TAB_BACKWARD, false);
return true;
}
}
return Clutter.EVENT_PROPAGATE;
},
_searchCancelled: function() {
this._showPage(this._showAppsButton.checked ? this._appsPage
: this._workspacesPage);
// Leave the entry focused when it doesn't have any text;
// when replacing a selected search term, Clutter emits
// two 'text-changed' signals, one for deleting the previous
// text and one for the new one - the second one is handled
// incorrectly when we remove focus
// (https://bugzilla.gnome.org/show_bug.cgi?id=636341) */
if (this._text.text != '')
this.reset();
},
reset: function () {
global.stage.set_key_focus(null);
this._entry.text = '';
this._text.set_cursor_visible(true);
this._text.set_selection(0, 0);
},
_onStageKeyFocusChanged: function() {
let focus = global.stage.get_key_focus();
let appearFocused = (this._entry.contains(focus) ||
this._searchResults.actor.contains(focus));
this._text.set_cursor_visible(appearFocused);
if (appearFocused)
this._entry.add_style_pseudo_class('focus');
else
this._entry.remove_style_pseudo_class('focus');
},
_onMapped: function() {
if (this._entry.mapped) {
// Enable 'find-as-you-type'
this._capturedEventId = global.stage.connect('captured-event',
Lang.bind(this, this._onCapturedEvent));
this._text.set_cursor_visible(true);
this._text.set_selection(0, 0);
} else {
// Disable 'find-as-you-type'
if (this._capturedEventId > 0)
global.stage.disconnect(this._capturedEventId);
this._capturedEventId = 0;
}
},
_shouldTriggerSearch: function(symbol) {
let unicode = Clutter.keysym_to_unicode(symbol);
if (unicode == 0)
return false;
if (getTermsForSearchString(String.fromCharCode(unicode)).length > 0)
return true;
return symbol == Clutter.BackSpace && this._searchActive;
},
startSearch: function(event) {
global.stage.set_key_focus(this._text);
this._text.event(event, true);
},
// the entry does not show the hint
_isActivated: function() {
return this._text.text == this._entry.get_text();
},
_onTextChanged: function (se, prop) {
let terms = getTermsForSearchString(this._entry.get_text());
let searchPreviouslyActive = this._searchActive;
this._searchActive = (terms.length > 0);
let startSearch = this._searchActive && !searchPreviouslyActive;
if (startSearch)
this._searchResults.startingSearch();
if (this._searchActive) {
this._entry.set_secondary_icon(this._clearIcon);
if (this._iconClickedId == 0)
this._iconClickedId = this._entry.connect('secondary-icon-clicked',
Lang.bind(this, this.reset));
if (this._searchTimeoutId == 0)
this._searchTimeoutId = Mainloop.timeout_add(150,
Lang.bind(this, this._doSearch));
} else {
if (this._iconClickedId > 0) {
this._entry.disconnect(this._iconClickedId);
this._iconClickedId = 0;
}
if (this._searchTimeoutId > 0) {
Mainloop.source_remove(this._searchTimeoutId);
this._searchTimeoutId = 0;
}
this._entry.set_secondary_icon(null);
this._searchCancelled();
}
},
_onKeyPress: function(entry, event) {
let symbol = event.get_key_symbol();
if (symbol == Clutter.Escape) {
if (this._isActivated()) {
this.reset();
return Clutter.EVENT_STOP;
}
} else if (this._searchActive) {
let arrowNext, nextDirection;
if (entry.get_text_direction() == Clutter.TextDirection.RTL) {
arrowNext = Clutter.Left;
nextDirection = Gtk.DirectionType.LEFT;
} else {
arrowNext = Clutter.Right;
nextDirection = Gtk.DirectionType.RIGHT;
}
if (symbol == Clutter.Tab) {
this._searchResults.navigateFocus(Gtk.DirectionType.TAB_FORWARD);
return Clutter.EVENT_STOP;
} else if (symbol == Clutter.ISO_Left_Tab) {
this._focusTrap.can_focus = false;
this._searchResults.navigateFocus(Gtk.DirectionType.TAB_BACKWARD);
this._focusTrap.can_focus = true;
return Clutter.EVENT_STOP;
} else if (symbol == Clutter.Down) {
this._searchResults.navigateFocus(Gtk.DirectionType.DOWN);
return Clutter.EVENT_STOP;
} else if (symbol == arrowNext && this._text.position == -1) {
this._searchResults.navigateFocus(nextDirection);
return Clutter.EVENT_STOP;
} else if (symbol == Clutter.Return || symbol == Clutter.KP_Enter) {
// We can't connect to 'activate' here because search providers
// might want to do something with the modifiers in activateDefault.
if (this._searchTimeoutId > 0) {
Mainloop.source_remove(this._searchTimeoutId);
this._doSearch();
}
this._searchResults.activateDefault();
return Clutter.EVENT_STOP;
}
}
return Clutter.EVENT_PROPAGATE;
},
_onCapturedEvent: function(actor, event) {
if (event.type() == Clutter.EventType.BUTTON_PRESS) {
let source = event.get_source();
if (source != this._text && this._text.text == '' &&
!Main.layoutManager.keyboardBox.contains(source)) {
// the user clicked outside after activating the entry, but
// with no search term entered and no keyboard button pressed
// - cancel the search
this.reset();
}
}
return Clutter.EVENT_PROPAGATE;
},
_doSearch: function () {
this._searchTimeoutId = 0;
let terms = getTermsForSearchString(this._entry.get_text());
this._searchResults.setTerms(terms);
this._showPage(this._searchPage);
return GLib.SOURCE_REMOVE;
},
getActivePage: function() {
if (this._activePage == this._workspacesPage)
return ViewPage.WINDOWS;
else if (this._activePage == this._appsPage)
return ViewPage.APPS;
else
return ViewPage.SEARCH;
},
fadeIn: function() {
let actor = this._activePage;
Tweener.addTween(actor, { opacity: 255,
time: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME / 2,
transition: 'easeInQuad'
});
},
fadeHalf: function() {
let actor = this._activePage;
Tweener.addTween(actor, { opacity: 128,
time: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME / 2,
transition: 'easeOutQuad'
});
}
});
Signals.addSignalMethods(ViewSelector.prototype);