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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
module mash.shelf.mojom;
import "mash/shelf/public/interfaces/shelf_constants.mojom";
import "skia/public/interfaces/bitmap.mojom";
// TODO(msw): Add support for multiple displays (with unified and multi-shelf).
// The Shelf controller allows clients (eg. Chrome) to control the mash shelf.
interface ShelfController {
AddObserver(associated ShelfObserver observer);
SetAlignment(Alignment alignment);
SetAutoHideBehavior(AutoHideBehavior auto_hide);
PinItem(ShelfItem item, associated ShelfItemDelegate delegate);
UnpinItem(string app_id);
SetItemImage(string app_id, skia.mojom.Bitmap image);
// ShelfObserver is notified on shelf changes; used to persist profile settings.
interface ShelfObserver {
OnAlignmentChanged(Alignment alignment);
OnAutoHideBehaviorChanged(AutoHideBehavior auto_hide);
// ShelfItemDelegate handles command execution and observes shelf item changes.
interface ShelfItemDelegate {
// Called when a pinned shelf item is invoked without an open window.
// Called on invocation of a shelf item's context menu command.
ExecuteCommand(uint32 command_id, int32 event_flags);
// Called when a shelf item is pinned or unpinned.
// Called when a pinned shelf item is reordered.
// |order| is the index of the item on the shelf.
ItemReordered(uint32 order);
// ContextMenuItems may be used to supplement ash shelf item context menus.
struct ContextMenuItem {
Type type;
uint32 command_id;
string? label;
array<ContextMenuItem>? submenu;
bool enabled;
bool checked;
uint32 radio_group_id;
// ShelfItem contains the basic fields needed to pin shortcut items.
struct ShelfItem {
// An app id, used to correlate windows and shortcuts (eg. 'mojo:foo').
string app_id;
// A app title, used for tooltips, etc. (eg. 'Foo Application').
string app_title;
// An icon image Bitmap, shown on the shelf.
skia.mojom.Bitmap image;
// Additional context menu items (eg. 'New Incognito Window').
array<ContextMenuItem>? context_menu_items;