gnome-shell/js/ui/appDisplay.js
Colin Walters 7813c5b93f appDisplay: Process application display in chunks instead of all at once
Layout here can be slow for multiple reasons; better to avoid blocking
the whole UI until we're done with layout.

https://bugzilla.gnome.org/show_bug.cgi?id=647778
2011-04-25 17:20:45 -04:00

708 lines
22 KiB
JavaScript

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Clutter = imports.gi.Clutter;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
const Shell = imports.gi.Shell;
const Lang = imports.lang;
const Signals = imports.signals;
const Meta = imports.gi.Meta;
const St = imports.gi.St;
const Mainloop = imports.mainloop;
const Gettext = imports.gettext.domain('gnome-shell');
const _ = Gettext.gettext;
const AppFavorites = imports.ui.appFavorites;
const DND = imports.ui.dnd;
const IconGrid = imports.ui.iconGrid;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const PopupMenu = imports.ui.popupMenu;
const Search = imports.ui.search;
const Tweener = imports.ui.tweener;
const Workspace = imports.ui.workspace;
const Params = imports.misc.params;
const MAX_APPLICATION_WORK_MILLIS = 75;
const MENU_POPUP_TIMEOUT = 600;
const SCROLL_TIME = 0.1;
function AlphabeticalView() {
this._init();
}
AlphabeticalView.prototype = {
_init: function() {
this._grid = new IconGrid.IconGrid({ xAlign: St.Align.START });
this._appSystem = Shell.AppSystem.get_default();
this._pendingAppLaterId = 0;
this._apps = [];
this._filterApp = null;
let box = new St.BoxLayout({ vertical: true });
box.add(this._grid.actor, { y_align: St.Align.START, expand: true });
this.actor = new St.ScrollView({ x_fill: true,
y_fill: false,
y_align: St.Align.START,
vfade: true });
this.actor.add_actor(box);
this.actor.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC);
this.actor.connect('notify::mapped', Lang.bind(this,
function() {
if (!this.actor.mapped)
return;
let adjustment = this.actor.vscroll.adjustment;
let direction = Overview.SwipeScrollDirection.VERTICAL;
Main.overview.setScrollAdjustment(adjustment, direction);
// Reset scroll on mapping
adjustment.value = 0;
}));
},
_removeAll: function() {
this._grid.removeAll();
this._apps = [];
},
_addApp: function(appInfo) {
let appIcon = new AppWellIcon(this._appSystem.get_app(appInfo.get_id()));
this._grid.addItem(appIcon.actor);
appIcon.actor.connect('key-focus-in', Lang.bind(this, this._ensureIconVisible));
appIcon._appInfo = appInfo;
if (this._filterApp && !this._filterApp(appInfo))
appIcon.actor.hide();
this._apps.push(appIcon);
},
_ensureIconVisible: function(icon) {
let adjustment = this.actor.vscroll.adjustment;
let [value, lower, upper, stepIncrement, pageIncrement, pageSize] = adjustment.get_values();
let offset = 0;
let vfade = this.actor.get_effect("vfade");
if (vfade)
offset = vfade.fade_offset;
// If this gets called as part of a right-click, the actor
// will be needs_allocation, and so "icon.y" would return 0
let box = icon.get_allocation_box();
if (box.y1 < value + offset)
value = Math.max(0, box.y1 - offset);
else if (box.y2 > value + pageSize - offset)
value = Math.min(upper, box.y2 + offset - pageSize);
else
return;
Tweener.addTween(adjustment,
{ value: value,
time: SCROLL_TIME,
transition: 'easeOutQuad' });
},
setFilter: function(filter) {
this._filterApp = filter;
for (let i = 0; i < this._apps.length; i++)
this._apps[i].actor.visible = filter(this._apps[i]._appInfo);
},
// Create actors for the applications in an idle to avoid blocking
// for too long; see bug 647778
_addPendingApps: function() {
let i;
let startTimeMillis = new Date().getTime();
for (i = 0; i < this._pendingAppIds.length; i++) {
let id = this._pendingAppIds[i];
this._addApp(this._pendingApps[id]);
let currentTimeMillis = new Date().getTime();
if (currentTimeMillis - startTimeMillis > MAX_APPLICATION_WORK_MILLIS)
break;
}
this._pendingAppIds.splice(0, i);
if (this._pendingAppIds.length > 0) {
return true;
} else {
this._pendingAppLaterId = 0;
this._pendingAppIds = null;
this._pendingApps = null;
return false;
}
},
refresh: function(apps) {
let ids = [];
for (let i in apps)
ids.push(i);
ids.sort(function(a, b) {
return apps[a].get_name().localeCompare(apps[b].get_name());
});
this._removeAll();
this._pendingAppIds = ids;
this._pendingApps = apps;
if (this._pendingAppLaterId)
Meta.later_remove(this._pendingAppLaterId);
this._pendingAppLaterId = Meta.later_add(Meta.LaterType.BEFORE_REDRAW,
Lang.bind(this, this._addPendingApps));
}
};
function ViewByCategories() {
this._init();
}
ViewByCategories.prototype = {
_init: function() {
this._appSystem = Shell.AppSystem.get_default();
this.actor = new St.BoxLayout({ style_class: 'all-app' });
this.actor._delegate = this;
this._view = new AlphabeticalView();
// categories can be -1 (the All view) or 0...n-1, where n
// is the number of sections
// -2 is a flag to indicate that nothing is selected
// (used only before the actor is mapped the first time)
this._currentCategory = -2;
this._filters = new St.BoxLayout({ vertical: true, reactive: true });
this._filters.connect('scroll-event', Lang.bind(this, this._scrollFilter));
this.actor.add(this._view.actor, { expand: true, x_fill: true, y_fill: true });
this.actor.add(this._filters, { expand: false, y_fill: false, y_align: St.Align.START });
// Always select the "All" filter when switching to the app view
this.actor.connect('notify::mapped', Lang.bind(this,
function() {
if (this.actor.mapped && this._allFilter)
this._selectCategory(-1);
}));
this._sections = [];
// We need a dummy actor to catch the keyboard focus if the
// user Ctrl-Alt-Tabs here before the deferred work creates
// our real contents
this._focusDummy = new St.Bin({ can_focus: true });
this.actor.add(this._focusDummy);
},
_scrollFilter: function(actor, event) {
let direction = event.get_scroll_direction();
if (direction == Clutter.ScrollDirection.UP)
this._selectCategory(Math.max(this._currentCategory - 1, -1))
else if (direction == Clutter.ScrollDirection.DOWN)
this._selectCategory(Math.min(this._currentCategory + 1, this._sections.length - 1));
},
_selectCategory: function(num) {
if (this._currentCategory == num) // nothing to do
return;
this._currentCategory = num;
if (num != -1)
this._allFilter.remove_style_pseudo_class('selected');
else
this._allFilter.add_style_pseudo_class('selected');
this._view.setFilter(Lang.bind(this, function(app) {
if (num == -1)
return true;
return this._sections[num].name == app.get_section();
}));
for (let i = 0; i < this._sections.length; i++) {
if (i == num)
this._sections[i].filterActor.add_style_pseudo_class('selected');
else
this._sections[i].filterActor.remove_style_pseudo_class('selected');
}
},
_addFilter: function(name, num) {
let button = new St.Button({ label: GLib.markup_escape_text (name, -1),
style_class: 'app-filter',
x_align: St.Align.START,
can_focus: true });
this._filters.add(button, { expand: true, x_fill: true, y_fill: false });
button.connect('clicked', Lang.bind(this, function() {
this._selectCategory(num);
}));
if (num != -1)
this._sections[num] = { filterActor: button,
name: name };
else
this._allFilter = button;
},
_removeAll: function() {
this._sections = [];
this._filters.destroy_children();
},
refresh: function(apps) {
this._removeAll();
let sections = this._appSystem.get_sections();
this._apps = apps;
/* Translators: Filter to display all applications */
this._addFilter(_("All"), -1);
if (!sections)
return;
for (let i = 0; i < sections.length; i++)
this._addFilter(sections[i], i);
this._selectCategory(-1);
this._view.refresh(apps);
if (this._focusDummy) {
let focused = this._focusDummy.has_key_focus();
this._focusDummy.destroy();
this._focusDummy = null;
if (focused)
this.actor.navigate_focus(null, Gtk.DirectionType.TAB_FORWARD, false);
}
}
};
/* This class represents a display containing a collection of application items.
* The applications are sorted based on their name.
*/
function AllAppDisplay() {
this._init();
}
AllAppDisplay.prototype = {
_init: function() {
this._appSystem = Shell.AppSystem.get_default();
this._appSystem.connect('installed-changed', Lang.bind(this, function() {
Main.queueDeferredWork(this._workId);
}));
this._appView = new ViewByCategories();
this.actor = new St.Bin({ child: this._appView.actor, x_fill: true, y_fill: true });
this._workId = Main.initializeDeferredWork(this.actor, Lang.bind(this, this._redisplay));
},
_redisplay: function() {
let apps = this._appSystem.get_flattened_apps().filter(function(app) {
return !app.get_is_nodisplay();
});
this._appView.refresh(apps);
}
};
function BaseAppSearchProvider() {
this._init();
}
BaseAppSearchProvider.prototype = {
__proto__: Search.SearchProvider.prototype,
_init: function(name) {
Search.SearchProvider.prototype._init.call(this, name);
this._appSys = Shell.AppSystem.get_default();
},
getResultMeta: function(resultId) {
let app = this._appSys.get_app(resultId);
if (!app)
return null;
return { 'id': resultId,
'name': app.get_name(),
'createIcon': function(size) {
return app.create_icon_texture(size);
}
};
},
activateResult: function(id, params) {
params = Params.parse(params, { workspace: null,
timestamp: null });
let app = this._appSys.get_app(id);
app.activate(params.workspace ? params.workspace.index() : -1);
},
dragActivateResult: function(id, params) {
params = Params.parse(params, { workspace: null,
timestamp: null });
let app = this._appSys.get_app(id);
app.open_new_window(params.workspace ? params.workspace.index() : -1);
}
};
function AppSearchProvider() {
this._init();
}
AppSearchProvider.prototype = {
__proto__: BaseAppSearchProvider.prototype,
_init: function() {
BaseAppSearchProvider.prototype._init.call(this, _("APPLICATIONS"));
},
getInitialResultSet: function(terms) {
return this._appSys.initial_search(false, terms);
},
getSubsearchResultSet: function(previousResults, terms) {
return this._appSys.subsearch(false, previousResults, terms);
},
createResultActor: function (resultMeta, terms) {
let app = this._appSys.get_app(resultMeta['id']);
let icon = new AppWellIcon(app);
return icon.actor;
}
};
function PrefsSearchProvider() {
this._init();
}
PrefsSearchProvider.prototype = {
__proto__: BaseAppSearchProvider.prototype,
_init: function() {
BaseAppSearchProvider.prototype._init.call(this, _("SETTINGS"));
},
getInitialResultSet: function(terms) {
return this._appSys.initial_search(true, terms);
},
getSubsearchResultSet: function(previousResults, terms) {
return this._appSys.subsearch(true, previousResults, terms);
}
};
function AppIcon(app, params) {
this._init(app, params);
}
AppIcon.prototype = {
__proto__: IconGrid.BaseIcon.prototype,
_init : function(app, params) {
this.app = app;
let label = this.app.get_name();
IconGrid.BaseIcon.prototype._init.call(this,
label,
params);
},
createIcon: function(iconSize) {
return this.app.create_icon_texture(iconSize);
}
};
function AppWellIcon(app, iconParams) {
this._init(app, iconParams);
}
AppWellIcon.prototype = {
_init : function(app, iconParams) {
this.app = app;
this.actor = new St.Button({ style_class: 'app-well-app',
reactive: true,
button_mask: St.ButtonMask.ONE | St.ButtonMask.TWO,
can_focus: true,
x_fill: true,
y_fill: true });
this.actor._delegate = this;
this.icon = new AppIcon(app, iconParams);
this.actor.set_child(this.icon.actor);
this.actor.connect('button-press-event', Lang.bind(this, this._onButtonPress));
this.actor.connect('clicked', Lang.bind(this, this._onClicked));
this.actor.connect('popup-menu', Lang.bind(this, this._onKeyboardPopupMenu));
this._menu = null;
this._menuManager = new PopupMenu.PopupMenuManager(this);
this._draggable = DND.makeDraggable(this.actor);
this._draggable.connect('drag-begin', Lang.bind(this,
function () {
this._removeMenuTimeout();
Main.overview.beginItemDrag(this);
}));
this._draggable.connect('drag-cancelled', Lang.bind(this,
function () {
Main.overview.cancelledItemDrag(this);
}));
this._draggable.connect('drag-end', Lang.bind(this,
function () {
Main.overview.endItemDrag(this);
}));
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this._menuTimeoutId = 0;
this._stateChangedId = this.app.connect('notify::state',
Lang.bind(this,
this._onStateChanged));
this._onStateChanged();
},
_onDestroy: function() {
if (this._stateChangedId > 0)
this.app.disconnect(this._stateChangedId);
this._stateChangedId = 0;
this._removeMenuTimeout();
},
_removeMenuTimeout: function() {
if (this._menuTimeoutId > 0) {
Mainloop.source_remove(this._menuTimeoutId);
this._menuTimeoutId = 0;
}
},
_onStateChanged: function() {
if (this.app.state != Shell.AppState.STOPPED)
this.actor.add_style_class_name('running');
else
this.actor.remove_style_class_name('running');
},
_onButtonPress: function(actor, event) {
let button = event.get_button();
if (button == 1) {
this._removeMenuTimeout();
this._menuTimeoutId = Mainloop.timeout_add(MENU_POPUP_TIMEOUT,
Lang.bind(this, function() {
this.popupMenu();
}));
} else if (button == 3) {
this.popupMenu();
return true;
}
return false;
},
_onClicked: function(actor, button) {
this._removeMenuTimeout();
if (button == 1) {
this._onActivate(Clutter.get_current_event());
} else if (button == 2) {
// Last workspace is always empty
let launchWorkspace = global.screen.get_workspace_by_index(global.screen.n_workspaces - 1);
launchWorkspace.activate(global.get_current_time());
this.emit('launching');
this.app.open_new_window(-1);
Main.overview.hide();
}
return false;
},
_onKeyboardPopupMenu: function() {
this.popupMenu();
this._menu.actor.navigate_focus(null, Gtk.DirectionType.TAB_FORWARD, false);
},
getId: function() {
return this.app.get_id();
},
popupMenu: function() {
this._removeMenuTimeout();
this.actor.fake_release();
if (!this._menu) {
this._menu = new AppIconMenu(this);
this._menu.connect('activate-window', Lang.bind(this, function (menu, window) {
this.activateWindow(window);
}));
this._menu.connect('popup', Lang.bind(this, function (menu, isPoppedUp) {
if (!isPoppedUp)
this._onMenuPoppedDown();
}));
Main.overview.connect('hiding', Lang.bind(this, function () { this._menu.close(); }));
this._menuManager.addMenu(this._menu);
}
this.actor.set_hover(true);
this.actor.show_tooltip();
this._menu.popup();
return false;
},
activateWindow: function(metaWindow) {
if (metaWindow) {
Main.activateWindow(metaWindow);
} else {
Main.overview.hide();
}
},
_onMenuPoppedDown: function() {
this.actor.sync_hover();
},
_onActivate: function (event) {
this.emit('launching');
let modifiers = Shell.get_event_state(event);
if (modifiers & Clutter.ModifierType.CONTROL_MASK
&& this.app.state == Shell.AppState.RUNNING) {
this.app.open_new_window(-1);
} else {
this.app.activate(-1);
}
Main.overview.hide();
},
shellWorkspaceLaunch : function(params) {
params = Params.parse(params, { workspace: null,
timestamp: null });
this.app.open_new_window(params.workspace ? params.workspace.index() : -1);
},
getDragActor: function() {
return this.app.create_icon_texture(Main.overview.dash.iconSize);
},
// Returns the original actor that should align with the actor
// we show as the item is being dragged.
getDragActorSource: function() {
return this.icon.icon;
}
};
Signals.addSignalMethods(AppWellIcon.prototype);
function AppIconMenu(source) {
this._init(source);
}
AppIconMenu.prototype = {
__proto__: PopupMenu.PopupMenu.prototype,
_init: function(source) {
let side = St.Side.LEFT;
if (St.Widget.get_default_direction() == St.TextDirection.RTL)
side = St.Side.RIGHT;
PopupMenu.PopupMenu.prototype._init.call(this, source.actor, 0.5, side, 0);
// We want to keep the item hovered while the menu is up
this.blockSourceEvents = true;
this._source = source;
this.connect('activate', Lang.bind(this, this._onActivate));
this.connect('open-state-changed', Lang.bind(this, this._onOpenStateChanged));
this.actor.add_style_class_name('app-well-menu');
// Chain our visibility and lifecycle to that of the source
source.actor.connect('notify::mapped', Lang.bind(this, function () {
if (!source.actor.mapped)
this.close();
}));
source.actor.connect('destroy', Lang.bind(this, function () { this.actor.destroy(); }));
Main.uiGroup.add_actor(this.actor);
},
_redisplay: function() {
this.removeAll();
let windows = this._source.app.get_windows();
// Display the app windows menu items and the separator between windows
// of the current desktop and other windows.
let activeWorkspace = global.screen.get_active_workspace();
let separatorShown = windows.length > 0 && windows[0].get_workspace() != activeWorkspace;
for (let i = 0; i < windows.length; i++) {
if (!separatorShown && windows[i].get_workspace() != activeWorkspace) {
this._appendSeparator();
separatorShown = true;
}
let item = this._appendMenuItem(windows[i].title);
item._window = windows[i];
}
if (windows.length > 0)
this._appendSeparator();
let isFavorite = AppFavorites.getAppFavorites().isFavorite(this._source.app.get_id());
this._newWindowMenuItem = this._appendMenuItem(_("New Window"));
this._appendSeparator();
this._toggleFavoriteMenuItem = this._appendMenuItem(isFavorite ? _("Remove from Favorites")
: _("Add to Favorites"));
},
_appendSeparator: function () {
let separator = new PopupMenu.PopupSeparatorMenuItem();
this.addMenuItem(separator);
},
_appendMenuItem: function(labelText) {
// FIXME: app-well-menu-item style
let item = new PopupMenu.PopupMenuItem(labelText);
this.addMenuItem(item);
return item;
},
popup: function(activatingButton) {
this._redisplay();
this.open();
},
_onOpenStateChanged: function (menu, open) {
if (open) {
this.emit('popup', true);
} else {
this.emit('popup', false);
}
},
_onActivate: function (actor, child) {
if (child._window) {
let metaWindow = child._window;
this.emit('activate-window', metaWindow);
} else if (child == this._newWindowMenuItem) {
this._source.app.open_new_window(-1);
this.emit('activate-window', null);
} else if (child == this._toggleFavoriteMenuItem) {
let favs = AppFavorites.getAppFavorites();
let isFavorite = favs.isFavorite(this._source.app.get_id());
if (isFavorite)
favs.removeFavorite(this._source.app.get_id());
else
favs.addFavorite(this._source.app.get_id());
}
this.close();
}
};
Signals.addSignalMethods(AppIconMenu.prototype);