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gnome-shell/js/ui/appDisplay.js
Owen W. Taylor f5c4e23c9c Fix drag point for application icons 
We need to return the "thing that is being dragged" from
getDragActorSource() so that dnd.js can figure out the right
relationship between the dragged object and cursor.

https://bugzilla.gnome.org/show_bug.cgi?id=607351
2010-02-05 10:57:17 -05:00

1045 lines
34 KiB
JavaScript
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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 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;
/* This class represents a single display item containing information about an application.
*
* appInfo - AppInfo object containing information about the application
*/
function AppDisplayItem(appInfo) {
this._init(appInfo);
}
AppDisplayItem.prototype = {
__proto__: GenericDisplay.GenericDisplayItem.prototype,
_init : function(appInfo) {
GenericDisplay.GenericDisplayItem.prototype._init.call(this);
this._appInfo = appInfo;
this._setItemInfo(appInfo.get_name(), appInfo.get_description());
},
getId: function() {
return this._appInfo.get_id();
},
//// Public method overrides ////
// Opens an application represented by this display item.
launch : function() {
let appSys = Shell.AppSystem.get_default();
let app = appSys.get_app(this._appInfo.get_id());
let windows = app.get_windows();
if (windows.length > 0) {
let mostRecentWindow = windows[0];
Main.overview.activateWindow(mostRecentWindow, global.get_current_time());
} else {
this._appInfo.launch();
}
},
//// Protected method overrides ////
// Returns an icon for the item.
_createIcon : function() {
return this._appInfo.create_icon_texture(GenericDisplay.ITEM_DISPLAY_ICON_SIZE);
},
// Returns a preview icon for the item.
_createPreviewIcon : function() {
return this._appInfo.create_icon_texture(GenericDisplay.PREVIEW_ICON_SIZE);
},
shellWorkspaceLaunch: function() {
this.launch();
}
};
/* This class represents a display containing a collection of application items.
* The applications are sorted based on their popularity by default, and based on
* their name if some search filter is applied.
*
* showPrefs - a boolean indicating if this AppDisplay should contain preference
* applets, rather than applications
*/
function AppDisplay(showPrefs, flags) {
this._init(showPrefs, flags);
}
AppDisplay.prototype = {
__proto__: GenericDisplay.GenericDisplay.prototype,
_init : function(showPrefs, flags) {
GenericDisplay.GenericDisplay.prototype._init.call(this, flags);
this._showPrefs = showPrefs;
this._menus = [];
this._menuDisplays = [];
// map<search term, map<appId, true>>
// We use a map of appIds instead of an array to ensure that we don't have duplicates and for easier lookup.
this._menuSearchAppMatches = {};
this._appSystem = Shell.AppSystem.get_default();
this._appsStale = true;
this._appSystem.connect('installed-changed', Lang.bind(this, function(appSys) {
this._appsStale = true;
this._redisplay(GenericDisplay.RedisplayFlags.NONE);
}));
},
//// Private ////
_addApp: function(appInfo) {
let appId = appInfo.get_id();
this._allItems[appId] = appInfo;
},
//// Protected method overrides ////
// Gets information about all applications by calling Gio.app_info_get_all().
_refreshCache : function() {
if (!this._appsStale)
return true;
this._allItems = {};
if (this._showPrefs) {
// Get the desktop file ids for settings/preferences.
// These are used for search results, but not in the app menus.
let settings = this._appSystem.get_all_settings();
for (let i = 0; i < settings.length; i++) {
let app = settings[i];
this._addApp(app);
}
} else {
let apps = this._appSystem.get_flattened_apps();
for (let i = 0; i < apps.length; i++) {
let app = apps[i];
this._addApp(app);
}
}
this._appsStale = false;
return false;
},
_setDefaultList : function() {
this._matchedItems = this._allItems;
this._matchedItemKeys = [];
for (let itemId in this._matchedItems) {
let app = this._allItems[itemId];
if (app.get_is_nodisplay())
continue;
this._matchedItemKeys.push(itemId);
}
this._matchedItemKeys.sort(Lang.bind(this, this._compareItems));
},
// Compares items associated with the item ids based on the alphabetical order
// of the item names.
// Returns an integer value indicating the result of the comparison.
_compareItems : function(itemIdA, itemIdB) {
let appA = this._allItems[itemIdA];
let appB = this._allItems[itemIdB];
return appA.get_name().localeCompare(appB.get_name());
},
// Checks if the item info can be a match for the search string by checking
// the name, description, execution command, and category for the application.
// Item info is expected to be Shell.AppInfo.
// Returns a boolean flag indicating if itemInfo is a match.
_isInfoMatching : function(itemInfo, search) {
// Don't show nodisplay items here
if (itemInfo.get_is_nodisplay())
return false;
if (search == null || search == '')
return true;
let fold = function(s) {
if (!s)
return s;
return GLib.utf8_casefold(GLib.utf8_normalize(s, -1,
GLib.NormalizeMode.ALL), -1);
};
let name = fold(itemInfo.get_name());
if (name.indexOf(search) >= 0)
return true;
let description = fold(itemInfo.get_description());
if (description) {
if (description.indexOf(search) >= 0)
return true;
}
let exec = fold(itemInfo.get_executable());
if (exec == null) {
log("Missing an executable for " + itemInfo.name);
} else {
if (exec.indexOf(search) >= 0)
return true;
}
return false;
},
// Creates an AppDisplayItem based on itemInfo, which is expected be an Shell.AppInfo object.
_createDisplayItem: function(itemInfo) {
return new AppDisplayItem(itemInfo);
}
};
Signals.addSignalMethods(AppDisplay.prototype);
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.launch();
}
};
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);
},
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._running = false;
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, true);
this._dragStartX = null;
this._dragStartY = null;
this.actor.connect('button-press-event', Lang.bind(this, this._onButtonPress));
this.actor.connect('notify::hover', Lang.bind(this, this._onHoverChange));
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._appWindowChangedId = 0;
},
_onShow: function() {
this._appWindowChangedId = this.app.connect('windows-changed',
Lang.bind(this,
this._updateStyleClass));
this._updateStyleClass();
},
_onHideDestroy: function() {
if (this._appWindowChangedId > 0)
this.app.disconnect(this._appWindowChangedId);
},
_updateStyleClass: function() {
let windows = this.app.get_windows();
let running = windows.length > 0;
if (running == this._running)
return;
this._running = running;
this.actor.style_class = this._running ? "app-well-app running"
: "app-well-app";
},
_onButtonPress: function(actor, event) {
let [stageX, stageY] = event.get_coords();
this._dragStartX = stageX;
this._dragStartY = stageY;
},
_onHoverChange: function(actor) {
let hover = this.actor.hover;
if (!hover) {
if (this.actor.pressed && this._dragStartX != null) {
this.actor.fake_release();
this._draggable.startDrag(this._dragStartX, this._dragStartY,
global.get_current_time());
} else {
this._dragStartX = null;
this._dragStartY = null;
}
}
},
_onClicked: function(actor, event) {
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;
},
popupMenu: function(activatingButton) {
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;
},
activateMostRecentWindow: function () {
let mostRecentWindow = this.app.get_windows()[0];
Main.overview.activateWindow(mostRecentWindow, global.get_current_time());
},
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.overview.activateWindow(metaWindow, global.get_current_time());
} else
Main.overview.hide();
},
_onMenuPoppedUp: function() {
if (this._getRunning()) {
Main.overview.getWorkspacesForWindow(null).setApplicationWindowSelection(this.app.get_id());
this._setWindowSelection = true;
this._didActivateWindow = false;
}
},
_onMenuPoppedDown: function() {
if (this._didActivateWindow)
return;
if (!this._setWindowSelection)
return;
Main.overview.getWorkspacesForWindow(null).setApplicationWindowSelection(null);
this._setWindowSelection = false;
},
_getRunning: function() {
return this.app.get_windows().length > 0;
},
_onActivate: function (event) {
let running = this._getRunning();
if (!running) {
this.app.launch();
Main.overview.hide();
} else {
let modifiers = Shell.get_event_state(event);
if (modifiers & Clutter.ModifierType.CONTROL_MASK) {
this.app.launch();
Main.overview.hide();
} else {
this.activateMostRecentWindow();
}
}
},
shellWorkspaceLaunch : function() {
// Here we just always launch the application again, even if we know
// it was already running. For most applications this
// should have the effect of creating a new window, whether that's
// a second process (in the case of Calculator) or IPC to existing
// instance (Firefox). There are a few less-sensical cases such
// as say Pidgin, but ideally what we do there is have the app
// express to us that it doesn't do relaunch=new-window in the
// .desktop file.
this.app.launch();
},
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._arrowSize = 4; // CSS default
this._spacing = 0; // CSS default
this._dragStartX = 0;
this._dragStartY = 0;
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._windowContainerBox = new St.Bin({ style_class: 'app-well-menu' });
this._windowContainer = new Shell.Menu({ orientation: Big.BoxOrientation.VERTICAL,
width: Main.overview._dash.actor.width });
this._windowContainerBox.set_child(this._windowContainer);
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._windowContainerBox);
// 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._borderColor = new Clutter.Color();
this._backgroundColor = new Clutter.Color();
this._windowContainerBox.connect('style-changed', Lang.bind(this, this._onStyleChanged));
this._arrow = new St.DrawingArea();
this._arrow.connect('redraw', Lang.bind(this, function (area, texture) {
Shell.draw_box_pointer(texture,
Shell.PointerDirection.LEFT,
this._borderColor,
this._backgroundColor);
}));
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 [min, natural] = this._windowContainerBox.get_preferred_width(forHeight);
min += this._arrowSize;
natural += this._arrowSize;
alloc.min_size = min;
alloc.natural_size = natural;
},
_getPreferredHeight: function(actor, forWidth, alloc) {
let [min, natural] = this._windowContainerBox.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._windowContainerBox.get_theme_node();
let width = box.x2 - box.x1;
let height = box.y2 - box.y1;
childBox.x1 = 0;
childBox.x2 = this._arrowSize;
childBox.y1 = Math.floor((height / 2) - (this._arrowSize / 2));
childBox.y2 = childBox.y1 + this._arrowSize;
this._arrow.allocate(childBox, flags);
// Ensure the arrow is above the border area
let border = themeNode.get_border_width(St.Side.LEFT);
childBox.x1 = this._arrowSize - border;
childBox.x2 = width;
childBox.y1 = 0;
childBox.y2 = height;
this._windowContainerBox.allocate(childBox, flags);
},
_redisplay: function() {
this._windowContainer.remove_all();
let windows = this._source.app.get_windows();
this._windowContainer.show();
let iconsDiffer = false;
let texCache = Shell.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.append_separator(bin, Big.BoxPackFlags.NONE);
},
_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.append(box, Big.BoxPackFlags.NONE);
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.set_style_pseudo_class(null);
this.emit('highlight-window', null);
}
this._highlightedItem = item;
if (this._highlightedItem) {
item.set_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.launch();
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();
},
_onStyleChanged: function() {
let themeNode = this._windowContainerBox.get_theme_node();
let [success, len] = themeNode.get_length('-shell-arrow-size', false);
if (success) {
this._arrowSize = len;
this.actor.queue_relayout();
}
[success, len] = themeNode.get_length('-shell-menu-spacing', false)
if (success) {
this._windowContainer.spacing = len;
}
let color = new Clutter.Color();
if (themeNode.get_background_color(color)) {
this._backgroundColor = color;
color = new Clutter.Color();
}
if (themeNode.get_border_color(St.Side.LEFT, color)) {
this._borderColor = color;
}
this._arrow.emit_redraw();
}
};
Signals.addSignalMethods(AppIconMenu.prototype);
function WellGrid() {
this._init();
}
WellGrid.prototype = {
_init: function() {
this.actor = new St.Bin({ name: "dashAppWell" });
// Pulled from CSS, but hardcode some defaults here
this._spacing = 0;
this._item_size = 48;
this._grid = new Shell.GenericContainer();
this.actor.set_child(this._grid);
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.actor = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
x_align: Big.BoxAlignment.CENTER });
this.actor._delegate = this;
this._workId = Main.initializeDeferredWork(this.actor, Lang.bind(this, this._redisplay));
this._grid = new WellGrid();
this.actor.append(this._grid.actor, Big.BoxPackFlags.EXPAND);
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 AppDisplayItem) {
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);
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