gnome-shell/js/ui/appDisplay.js
Colin Walters 6aaf4b87d5 Major ShellApp API cleanup, startup notification, window focus handling
This patch combines several high level changes which are conceptually
independent but in practice rather intertwined.

* Add a "state" property to ShellApp which reflects whether it's
  stopped, starting, or started.  This will allow us to later clean
  up all the callers that are using ".get_windows().length > 0" as
  a proxy for this property
* Replace shell_app_launch with shell_app_activate and shell_app_open_new_window
  A lot of code was calling .launch, but it's signficantly clearer
  if we call this ".open_new_window()", and later if we gain the ability
  to call into an application's menu, we can implement this correctly rather
  than trying to update all .launch callers.
* Because ShellApp now has a "starting" state, rebase panel.js on top of
  this so that when we get a startup-notification sequence for an app
  and transition it to starting, it becomes the focus app, and panel.js
  cleanly just tracks the focus app, rather than bouncing between SN
  sequences.  This removes display of non-app startup sequences, which
  I consider an acceptable action in light of the committed changes
  to startup-notification and GTK+.

https://bugzilla.gnome.org/show_bug.cgi?id=614755
2010-04-12 16:32:21 -04:00

1068 lines
34 KiB
JavaScript

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Clutter = imports.gi.Clutter;
const Pango = imports.gi.Pango;
const GLib = imports.gi.GLib;
const Gio = imports.gi.Gio;
const Gtk = imports.gi.Gtk;
const Shell = imports.gi.Shell;
const Lang = imports.lang;
const Signals = imports.signals;
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 GenericDisplay = imports.ui.genericDisplay;
const Main = imports.ui.main;
const Search = imports.ui.search;
const Workspace = imports.ui.workspace;
const APPICON_SIZE = 48;
const WELL_MAX_COLUMNS = 8;
const MENU_POPUP_TIMEOUT = 600;
function AllAppView() {
this._init();
}
AllAppView.prototype = {
_init: function(apps) {
this.actor = new St.BoxLayout({ vertical: true });
this._grid = new WellGrid(true);
this._appSystem = Shell.AppSystem.get_default();
this.actor.add(this._grid.actor, { y_align: St.Align.START, expand: true });
},
_removeAll: function() {
this._grid.removeAll();
this._apps = [];
},
_addApp: function(app) {
let App = new AppWellIcon(this._appSystem.get_app(app.get_id()));
App.connect('launching', Lang.bind(this, function() {
this.emit('launching');
}));
App._draggable.connect('drag-begin', Lang.bind(this, function() {
this.emit('drag-begin');
}));
this._grid.addItem(App.actor);
this._apps.push(App);
},
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();
for (let i = 0; i < ids.length; i++) {
this._addApp(apps[ids[i]]);
}
}
};
Signals.addSignalMethods(AllAppView.prototype);
/* 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);
}));
let bin = new St.BoxLayout({ style_class: 'all-app-controls-panel',
reactive: true });
this.actor = new St.BoxLayout({ style_class: 'all-app', vertical: true });
this.actor.hide();
let view = new St.ScrollView({ x_fill: true,
y_fill: false,
style_class: 'all-app-scroll-view',
vshadows: true });
this._scrollView = view;
this.actor.add(bin);
this.actor.add(view, { expand: true, y_fill: false, y_align: St.Align.START });
this._appView = new AllAppView();
this._appView.connect('launching', Lang.bind(this, this.close));
this._appView.connect('drag-begin', Lang.bind(this, this.close));
this._scrollView.add_actor(this._appView.actor);
this._scrollView.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC);
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);
},
toggle: function() {
this.emit('open-state-changed', !this.actor.visible);
this.actor.visible = !this.actor.visible;
},
close: function() {
if (!this.actor.visible)
return;
this.toggle();
}
};
Signals.addSignalMethods(AllAppDisplay.prototype);
function AppSearchResultDisplay(provider) {
this._init(provider);
}
AppSearchResultDisplay.prototype = {
__proto__: Search.SearchResultDisplay.prototype,
_init: function (provider) {
Search.SearchResultDisplay.prototype._init.call(this, provider);
this._spacing = 0;
this.actor = new St.Bin({ name: 'dashAppSearchResults',
x_align: St.Align.START });
this.actor.connect('style-changed', Lang.bind(this, this._onStyleChanged));
let container = new Shell.GenericContainer();
this._container = container;
this.actor.set_child(container);
container.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
container.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
container.connect('allocate', Lang.bind(this, this._allocate));
},
_getPreferredWidth: function (actor, forHeight, alloc) {
let children = actor.get_children();
for (let i = 0; i < children.length; i++) {
let [minSize, natSize] = children[i].get_preferred_width(forHeight);
alloc.natural_size += natSize;
}
},
_getPreferredHeight: function (actor, forWidth, alloc) {
let children = actor.get_children();
for (let i = 0; i < children.length; i++) {
let [minSize, natSize] = children[i].get_preferred_height(forWidth);
if (minSize > alloc.min_size)
alloc.min_size = minSize;
if (natSize > alloc.natural_size)
alloc.natural_size = natSize;
}
},
_allocate: function (actor, box, flags) {
let availWidth = box.x2 - box.x1;
let availHeight = box.y2 - box.y1;
let children = actor.get_children();
let x = 0;
let i;
for (i = 0; i < children.length; i++) {
let child = children[i];
let childBox = new Clutter.ActorBox();
let [minWidth, minHeight, natWidth, natHeight] = child.get_preferred_size();
if (x + natWidth > availWidth) {
actor.set_skip_paint(child, true);
continue;
}
let yPadding = Math.max(0, availHeight - natHeight);
childBox.x1 = x;
childBox.x2 = childBox.x1 + natWidth;
childBox.y1 = Math.floor(yPadding / 2);
childBox.y2 = availHeight - childBox.y1;
x = childBox.x2 + this._spacing;
child.allocate(childBox, flags);
actor.set_skip_paint(child, false);
}
},
_onStyleChanged: function () {
let themeNode = this.actor.get_theme_node();
let [success, len] = themeNode.get_length('spacing', false);
if (success)
this._spacing = len;
this._container.queue_relayout();
},
renderResults: function(results, terms) {
let appSys = Shell.AppSystem.get_default();
for (let i = 0; i < results.length && i < WELL_MAX_COLUMNS; i++) {
let result = results[i];
let app = appSys.get_app(result);
let display = new AppWellIcon(app);
this._container.add_actor(display.actor);
}
},
clear: function () {
this._container.get_children().forEach(function (actor) { actor.destroy(); });
this.selectionIndex = -1;
},
getVisibleResultCount: function() {
let nChildren = this._container.get_children().length;
return nChildren - this._container.get_n_skip_paint();
},
selectIndex: function (index) {
let nVisible = this.getVisibleResultCount();
let children = this._container.get_children();
if (this.selectionIndex >= 0) {
let prevActor = children[this.selectionIndex];
prevActor._delegate.setSelected(false);
}
this.selectionIndex = -1;
if (index >= nVisible)
return false;
else if (index < 0)
return false;
let targetActor = children[index];
targetActor._delegate.setSelected(true);
this.selectionIndex = index;
return true;
},
activateSelected: function() {
if (this.selectionIndex < 0)
return;
let children = this._container.get_children();
let targetActor = children[this.selectionIndex];
this.provider.activateResult(targetActor._delegate.app.get_id());
}
};
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(),
'icon': app.create_icon_texture(Search.RESULT_ICON_SIZE)};
},
activateResult: function(id) {
let app = this._appSys.get_app(id);
app.activate();
},
dragActivateResult: function(id) {
let app = this._appSys.get_app(id);
app.open_new_window();
}
};
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);
},
createResultContainerActor: function () {
return new AppSearchResultDisplay(this);
},
createResultActor: function (resultMeta, terms) {
return new AppIcon(resultMeta.id);
},
expandSearch: function(terms) {
log("TODO expand search");
}
};
function PrefsSearchProvider() {
this._init();
}
PrefsSearchProvider.prototype = {
__proto__: BaseAppSearchProvider.prototype,
_init: function() {
BaseAppSearchProvider.prototype._init.call(this, _("PREFERENCES"));
},
getInitialResultSet: function(terms) {
return this._appSys.initial_search(true, terms);
},
getSubsearchResultSet: function(previousResults, terms) {
return this._appSys.subsearch(true, previousResults, terms);
},
expandSearch: function(terms) {
let controlCenter = this._appSys.load_from_desktop_file('gnomecc.desktop');
controlCenter.launch();
Main.overview.hide();
}
};
function AppIcon(app) {
this._init(app);
}
AppIcon.prototype = {
_init : function(app) {
this.app = app;
this.actor = new St.Bin({ style_class: 'app-icon',
x_fill: true,
y_fill: true });
this.actor._delegate = this;
let box = new St.BoxLayout({ vertical: true });
this.actor.set_child(box);
this.icon = this.app.create_icon_texture(APPICON_SIZE);
box.add(this.icon, { expand: true, x_fill: false, y_fill: false });
this._name = new St.Label({ text: this.app.get_name() });
this._name.clutter_text.line_alignment = Pango.Alignment.CENTER;
box.add_actor(this._name);
}
};
function AppWellIcon(app) {
this._init(app);
}
AppWellIcon.prototype = {
_init : function(app) {
this.app = app;
this.actor = new St.Clickable({ style_class: 'app-well-app',
reactive: true,
x_fill: true,
y_fill: true });
this.actor._delegate = this;
this._icon = new AppIcon(app);
this.actor.set_child(this._icon.actor);
this.actor.connect('clicked', Lang.bind(this, this._onClicked));
this._menu = null;
this._draggable = DND.makeDraggable(this.actor);
this._draggable.connect('drag-begin', Lang.bind(this,
function () {
this._removeMenuTimeout();
}));
this.actor.connect('button-press-event', Lang.bind(this, this._onButtonPress));
this.actor.connect('show', Lang.bind(this, this._onShow));
this.actor.connect('hide', Lang.bind(this, this._onHideDestroy));
this.actor.connect('destroy', Lang.bind(this, this._onHideDestroy));
this._stateChangedId = 0;
this._menuTimeoutId = 0;
},
_onShow: function() {
this._stateChangedId = this.app.connect('notify::state',
Lang.bind(this,
this._onStateChanged));
this._onStateChanged();
},
_onHideDestroy: function() {
if (this._stateChangedId > 0)
this.app.disconnect(this._stateChangedId);
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(button);
}));
}
},
_onClicked: function(actor, event) {
this._removeMenuTimeout();
let button = event.get_button();
if (button == 1) {
this._onActivate(event);
} else if (button == 3) {
// Don't bind to the right click here; we want left click outside the
// area to deactivate as well.
this.popupMenu(0);
}
return false;
},
getId: function() {
return this.app.get_id();
},
popupMenu: function(activatingButton) {
this._removeMenuTimeout();
this.actor.fake_release();
if (!this._menu) {
this._menu = new AppIconMenu(this);
this._menu.connect('highlight-window', Lang.bind(this, function (menu, window) {
this.highlightWindow(window);
}));
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._onMenuPoppedUp();
} else {
this._onMenuPoppedDown();
}
}));
}
this._menu.popup(activatingButton);
return false;
},
highlightWindow: function(metaWindow) {
if (this._didActivateWindow)
return;
if (!this._getRunning())
return;
Main.overview.getWorkspacesForWindow(metaWindow).setHighlightWindow(metaWindow);
},
activateWindow: function(metaWindow) {
if (metaWindow) {
this._didActivateWindow = true;
Main.activateWindow(metaWindow);
} else {
Main.overview.hide();
}
},
setSelected: function (isSelected) {
this._selected = isSelected;
if (this._selected)
this.actor.add_style_class_name('selected');
else
this.actor.remove_style_class_name('selected');
},
_onMenuPoppedUp: function() {
if (this._getRunning()) {
Main.overview.getWorkspacesForWindow(null).setApplicationWindowSelection(this.app.get_id());
this._setWindowSelection = true;
this._didActivateWindow = false;
}
},
_onMenuPoppedDown: function() {
this.actor.sync_hover();
if (this._didActivateWindow)
return;
if (!this._setWindowSelection)
return;
Main.overview.getWorkspacesForWindow(null).setApplicationWindowSelection(null);
this._setWindowSelection = false;
},
_getRunning: function() {
return this.app.state != Shell.AppState.STOPPED;
},
_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();
} else {
this.app.activate();
}
Main.overview.hide();
},
shellWorkspaceLaunch : function() {
this.app.open_new_window();
},
getDragActor: function() {
return this.app.create_icon_texture(APPICON_SIZE);
},
// 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 = {
_init: function(source) {
this._source = source;
this.actor = new Shell.GenericContainer({ reactive: true });
this.actor.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
this.actor.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
this.actor.connect('allocate', Lang.bind(this, this._allocate));
this._windowContainer = new Shell.Menu({ style_class: 'app-well-menu',
vertical: true,
width: Main.overview._dash.actor.width });
this._windowContainer.connect('unselected', Lang.bind(this, this._onItemUnselected));
this._windowContainer.connect('selected', Lang.bind(this, this._onItemSelected));
this._windowContainer.connect('cancelled', Lang.bind(this, this._onWindowSelectionCancelled));
this._windowContainer.connect('activate', Lang.bind(this, this._onItemActivate));
this.actor.add_actor(this._windowContainer);
// Stay popped up on release over application icon
this._windowContainer.set_persistent_source(this._source.actor);
// Intercept events while the menu has the pointer grab to do window-related effects
this._windowContainer.connect('enter-event', Lang.bind(this, this._onMenuEnter));
this._windowContainer.connect('leave-event', Lang.bind(this, this._onMenuLeave));
this._windowContainer.connect('button-release-event', Lang.bind(this, this._onMenuButtonRelease));
this._arrow = new St.DrawingArea({ style_class: 'app-well-menu-arrow' });
this._arrow.connect('repaint', Lang.bind(this, function (area) {
Shell.draw_box_pointer(area, Shell.PointerDirection.LEFT);
}));
this.actor.add_actor(this._arrow);
// Chain our visibility and lifecycle to that of the source
source.actor.connect('notify::mapped', Lang.bind(this, function () {
if (!source.actor.mapped)
this._windowContainer.popdown();
}));
source.actor.connect('destroy', Lang.bind(this, function () { this.actor.destroy(); }));
global.stage.add_actor(this.actor);
},
_getPreferredWidth: function(actor, forHeight, alloc) {
let [menuMin, menuNatural] = this._windowContainer.get_preferred_width(forHeight);
let [arrowMin, arrowNatural] = this._arrow.get_preferred_width(forHeight);
alloc.min_size = menuMin + arrowMin;
alloc.natural_size = menuNatural + arrowNatural;
},
_getPreferredHeight: function(actor, forWidth, alloc) {
let [min, natural] = this._windowContainer.get_preferred_height(forWidth);
alloc.min_size = min;
alloc.natural_size = natural;
},
_allocate: function(actor, box, flags) {
let childBox = new Clutter.ActorBox();
let themeNode = this._windowContainer.get_theme_node();
let width = box.x2 - box.x1;
let height = box.y2 - box.y1;
let [arrowMinWidth, arrowWidth] = this._arrow.get_preferred_width(height);
childBox.x1 = 0;
childBox.x2 = arrowWidth;
childBox.y1 = Math.floor((height / 2) - (arrowWidth / 2));
childBox.y2 = childBox.y1 + arrowWidth;
this._arrow.allocate(childBox, flags);
// Ensure the arrow is above the border area
let border = themeNode.get_border_width(St.Side.LEFT);
childBox.x1 = arrowWidth - border;
childBox.x2 = width;
childBox.y1 = 0;
childBox.y2 = height;
this._windowContainer.allocate(childBox, flags);
},
_redisplay: function() {
this._windowContainer.remove_all();
let windows = this._source.app.get_windows();
this._windowContainer.show();
let iconsDiffer = false;
let texCache = St.TextureCache.get_default();
if (windows.length > 0) {
let firstIcon = windows[0].mini_icon;
for (let i = 1; i < windows.length; i++) {
if (!texCache.pixbuf_equal(windows[i].mini_icon, firstIcon)) {
iconsDiffer = true;
break;
}
}
}
// 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 box = this._appendMenuItem(windows[i].title);
box._window = windows[i];
}
if (windows.length > 0)
this._appendSeparator();
let isFavorite = AppFavorites.getAppFavorites().isFavorite(this._source.app.get_id());
this._newWindowMenuItem = windows.length > 0 ? this._appendMenuItem(_("New Window")) : null;
if (windows.length > 0)
this._appendSeparator();
this._toggleFavoriteMenuItem = this._appendMenuItem(isFavorite ? _("Remove from Favorites")
: _("Add to Favorites"));
this._highlightedItem = null;
},
_appendSeparator: function () {
let bin = new St.Bin({ style_class: "app-well-menu-separator" });
this._windowContainer.add_actor(bin);
},
_appendMenuItem: function(labelText) {
let box = new St.BoxLayout({ style_class: 'app-well-menu-item',
reactive: true });
let label = new St.Label({ text: labelText });
box.add(label);
this._windowContainer.add_actor(box);
return box;
},
popup: function(activatingButton) {
let [stageX, stageY] = this._source.actor.get_transformed_position();
let [stageWidth, stageHeight] = this._source.actor.get_transformed_size();
this._redisplay();
this._windowContainer.popup(activatingButton, global.get_current_time());
this.emit('popup', true);
let x, y;
x = Math.floor(stageX + stageWidth);
y = Math.floor(stageY + (stageHeight / 2) - (this.actor.height / 2));
this.actor.set_position(x, y);
this.actor.show();
},
popdown: function() {
this._windowContainer.popdown();
this.emit('popup', false);
this.actor.hide();
},
selectWindow: function(metaWindow) {
this._selectMenuItemForWindow(metaWindow);
},
_findMetaWindowForActor: function (actor) {
if (actor._delegate instanceof Workspace.WindowClone)
return actor._delegate.metaWindow;
else if (actor.get_meta_window)
return actor.get_meta_window();
return null;
},
// This function is called while the menu has a pointer grab; what we want
// to do is see if the mouse was released over a window representation
_onMenuButtonRelease: function (actor, event) {
let metaWindow = this._findMetaWindowForActor(event.get_source());
if (metaWindow) {
this.emit('activate-window', metaWindow);
}
},
_updateHighlight: function (item) {
if (this._highlightedItem) {
this._highlightedItem.remove_style_pseudo_class('hover');
this.emit('highlight-window', null);
}
this._highlightedItem = item;
if (this._highlightedItem) {
item.add_style_pseudo_class('hover');
let window = this._highlightedItem._window;
if (window)
this.emit('highlight-window', window);
}
},
_selectMenuItemForWindow: function (metaWindow) {
let children = this._windowContainer.get_children();
for (let i = 0; i < children.length; i++) {
let child = children[i];
let menuMetaWindow = child._window;
if (menuMetaWindow == metaWindow)
this._updateHighlight(child);
}
},
// Called while menu has a pointer grab
_onMenuEnter: function (actor, event) {
let metaWindow = this._findMetaWindowForActor(event.get_source());
if (metaWindow) {
this._selectMenuItemForWindow(metaWindow);
}
},
// Called while menu has a pointer grab
_onMenuLeave: function (actor, event) {
let metaWindow = this._findMetaWindowForActor(event.get_source());
if (metaWindow) {
this._updateHighlight(null);
}
},
_onItemUnselected: function (actor, child) {
this._updateHighlight(null);
},
_onItemSelected: function (actor, child) {
this._updateHighlight(child);
},
_onItemActivate: 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();
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.popdown();
},
_onWindowSelectionCancelled: function () {
this.emit('highlight-window', null);
this.popdown();
}
};
Signals.addSignalMethods(AppIconMenu.prototype);
function WellGrid() {
this._init();
}
WellGrid.prototype = {
_init: function() {
this.actor = new St.BoxLayout({ name: "dashAppWell", vertical: true });
// Pulled from CSS, but hardcode some defaults here
this._spacing = 0;
this._item_size = 48;
this._grid = new Shell.GenericContainer();
this.actor.add(this._grid, { expand: true, y_align: St.Align.START });
this.actor.connect('style-changed', Lang.bind(this, this._onStyleChanged));
this._grid.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
this._grid.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
this._grid.connect('allocate', Lang.bind(this, this._allocate));
},
_getPreferredWidth: function (grid, forHeight, alloc) {
let children = this._grid.get_children();
let nColumns = children.length;
let totalSpacing = Math.max(0, nColumns - 1) * this._spacing;
// Kind of a lie, but not really an issue right now. If
// we wanted to support some sort of hidden/overflow that would
// need higher level design
alloc.min_size = this._item_size;
alloc.natural_size = nColumns * this._item_size + totalSpacing;
},
_getPreferredHeight: function (grid, forWidth, alloc) {
let children = this._grid.get_children();
let [nColumns, usedWidth] = this._computeLayout(forWidth);
let nRows;
if (nColumns > 0)
nRows = Math.ceil(children.length / nColumns);
else
nRows = 0;
let totalSpacing = Math.max(0, nRows - 1) * this._spacing;
let height = nRows * this._item_size + totalSpacing;
alloc.min_size = height;
alloc.natural_size = height;
},
_allocate: function (grid, box, flags) {
let children = this._grid.get_children();
let availWidth = box.x2 - box.x1;
let availHeight = box.y2 - box.y1;
let [nColumns, usedWidth] = this._computeLayout(availWidth);
let overallPaddingX = Math.floor((availWidth - usedWidth) / 2);
let x = box.x1 + overallPaddingX;
let y = box.y1;
let columnIndex = 0;
for (let i = 0; i < children.length; i++) {
let [childMinWidth, childMinHeight, childNaturalWidth, childNaturalHeight]
= children[i].get_preferred_size();
/* Center the item in its allocation horizontally */
let width = Math.min(this._item_size, childNaturalWidth);
let childXSpacing = Math.max(0, width - childNaturalWidth) / 2;
let height = Math.min(this._item_size, childNaturalHeight);
let childYSpacing = Math.max(0, height - childNaturalHeight) / 2;
let childBox = new Clutter.ActorBox();
childBox.x1 = Math.floor(x + childXSpacing);
childBox.y1 = Math.floor(y + childYSpacing);
childBox.x2 = childBox.x1 + width;
childBox.y2 = childBox.y1 + height;
children[i].allocate(childBox, flags);
columnIndex++;
if (columnIndex == nColumns) {
columnIndex = 0;
}
if (columnIndex == 0) {
y += this._item_size + this._spacing;
x = box.x1 + overallPaddingX;
} else {
x += this._item_size + this._spacing;
}
}
},
_computeLayout: function (forWidth) {
let children = this._grid.get_children();
let nColumns = 0;
let usedWidth = 0;
while (nColumns < WELL_MAX_COLUMNS &&
nColumns < children.length &&
(usedWidth + this._item_size <= forWidth)) {
usedWidth += this._item_size + this._spacing;
nColumns += 1;
}
if (nColumns > 0)
usedWidth -= this._spacing;
return [nColumns, usedWidth];
},
_onStyleChanged: function() {
let themeNode = this.actor.get_theme_node();
let [success, len] = themeNode.get_length('spacing', false);
if (success)
this._spacing = len;
[success, len] = themeNode.get_length('-shell-grid-item-size', false);
if (success)
this._item_size = len;
this._grid.queue_relayout();
},
removeAll: function () {
this._grid.get_children().forEach(Lang.bind(this, function (child) {
child.destroy();
}));
},
addItem: function(actor) {
this._grid.add_actor(actor);
}
};
function AppWell() {
this._init();
}
AppWell.prototype = {
_init : function() {
this._menus = [];
this._menuDisplays = [];
this._favorites = [];
this._grid = new WellGrid();
this.actor = this._grid.actor;
this.actor._delegate = this;
this._workId = Main.initializeDeferredWork(this.actor, Lang.bind(this, this._redisplay));
this._tracker = Shell.WindowTracker.get_default();
this._appSystem = Shell.AppSystem.get_default();
this._appSystem.connect('installed-changed', Lang.bind(this, this._queueRedisplay));
AppFavorites.getAppFavorites().connect('changed', Lang.bind(this, this._queueRedisplay));
this._tracker.connect('app-running-changed', Lang.bind(this, this._queueRedisplay));
},
_appIdListToHash: function(apps) {
let ids = {};
for (let i = 0; i < apps.length; i++)
ids[apps[i].get_id()] = apps[i];
return ids;
},
_queueRedisplay: function () {
Main.queueDeferredWork(this._workId);
},
_redisplay: function () {
this._grid.removeAll();
let favorites = AppFavorites.getAppFavorites().getFavoriteMap();
/* hardcode here pending some design about how exactly desktop contexts behave */
let contextId = "";
let running = this._tracker.get_running_apps(contextId);
let runningIds = this._appIdListToHash(running);
let nFavorites = 0;
for (let id in favorites) {
let app = favorites[id];
let display = new AppWellIcon(app);
this._grid.addItem(display.actor);
nFavorites++;
}
for (let i = 0; i < running.length; i++) {
let app = running[i];
if (app.get_id() in favorites)
continue;
let display = new AppWellIcon(app);
this._grid.addItem(display.actor);
}
if (running.length == 0 && nFavorites == 0) {
let text = new St.Label({ text: _("Drag here to add favorites")});
this._grid.actor.set_child(text);
}
},
// Draggable target interface
acceptDrop : function(source, actor, x, y, time) {
let app = null;
if (source instanceof AppWellIcon) {
app = this._appSystem.get_app(source.getId());
} else if (source instanceof Workspace.WindowClone) {
app = this._tracker.get_window_app(source.metaWindow);
}
// Don't allow favoriting of transient apps
if (app == null || app.is_transient()) {
return false;
}
let id = app.get_id();
let favorites = AppFavorites.getAppFavorites().getFavoriteMap();
let srcIsFavorite = (id in favorites);
if (srcIsFavorite) {
return false;
} else {
Mainloop.idle_add(Lang.bind(this, function () {
AppFavorites.getAppFavorites().addFavorite(id);
return false;
}));
}
return true;
}
};
Signals.addSignalMethods(AppWell.prototype);