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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 ws.mojom;
import "services/ws/public/mojom/window_tree_constants.mojom";
interface ScreenProviderObserver {
// Sent when the observer is added as well as any time the set of displays
// changes in any way. |displays| contains all known displays. If the system
// that WS is running on has an integrated display, for example a laptop
// internal display, then |internal_display_id| will be the corresponding
// display id. If there is no internal display then |internal_display_id| will
// be kInvalidDisplayID. |display_id_for_new_windows| is the display on which
// to place new top-level windows, usually the display on which a window was
// last activated.
OnDisplaysChanged(array<WsDisplay> displays,
int64 primary_display_id,
int64 internal_display_id,
int64 display_id_for_new_windows);