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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_EXTENSIONS_API_TABS_WINDOWS_EVENT_ROUTER_H_
#define CHROME_BROWSER_EXTENSIONS_API_TABS_WINDOWS_EVENT_ROUTER_H_
#include <map>
#include <memory>
#include <string>
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "base/values.h"
#include "build/build_config.h"
#include "chrome/browser/extensions/window_controller_list.h"
#include "chrome/browser/extensions/window_controller_list_observer.h"
#include "extensions/browser/app_window/app_window_registry.h"
#include "extensions/browser/extension_event_histogram_value.h"
#if defined(TOOLKIT_VIEWS) && !BUILDFLAG(IS_MAC)
#include "ui/views/focus/widget_focus_manager.h" // nogncheck
#endif
#if BUILDFLAG(IS_MAC)
#include "chrome/browser/mac/key_window_notifier.h"
#endif
class Profile;
namespace extensions {
class AppWindow;
class AppWindowController;
// The WindowsEventRouter sends chrome.windows.* events to listeners
// inside extension process renderers. The router listens to *all* events,
// but will only route events within a profile to extension processes in the
// same profile.
class WindowsEventRouter : public AppWindowRegistry::Observer,
#if BUILDFLAG(IS_MAC)
public KeyWindowNotifier::Observer,
#elif defined(TOOLKIT_VIEWS)
public views::WidgetFocusChangeListener,
#endif
public WindowControllerListObserver {
public:
explicit WindowsEventRouter(Profile* profile);
WindowsEventRouter(const WindowsEventRouter&) = delete;
WindowsEventRouter& operator=(const WindowsEventRouter&) = delete;
~WindowsEventRouter() override;
// `window_controller` is NULL to indicate a focused window has lost focus.
void OnActiveWindowChanged(WindowController* window_controller);
private:
// AppWindowRegistry::Observer:
void OnAppWindowAdded(AppWindow* app_window) override;
void OnAppWindowRemoved(AppWindow* app_window) override;
void OnAppWindowActivated(AppWindow* app_window) override;
// WindowControllerListObserver methods:
void OnWindowControllerAdded(WindowController* window_controller) override;
void OnWindowControllerRemoved(WindowController* window) override;
void OnWindowBoundsChanged(WindowController* window_controller) override;
#if defined(TOOLKIT_VIEWS) && !BUILDFLAG(IS_MAC)
void OnNativeFocusChanged(gfx::NativeView focused_now) override;
#endif
#if BUILDFLAG(IS_MAC)
// KeyWindowNotifier::Observer:
void OnNoKeyWindow() override;
#endif
void DispatchEvent(events::HistogramValue histogram_value,
const std::string& event_name,
WindowController* window_controller,
base::Value::List args);
bool HasEventListener(const std::string& event_name);
void AddAppWindow(AppWindow* app_window);
// The main profile that owns this event router.
raw_ptr<Profile, DanglingUntriaged> profile_;
// The profile the currently focused window belongs to; either the main or
// incognito profile or NULL (none of the above). We remember this in order
// to correctly handle focus changes between non-OTR and OTR windows.
raw_ptr<Profile, AcrossTasksDanglingUntriaged> focused_profile_;
// The currently focused window. We keep this so as to avoid sending multiple
// windows.onFocusChanged events with the same windowId.
int focused_window_id_;
using AppWindowMap = std::map<int, std::unique_ptr<AppWindowController>>;
// Map of application windows, the key to the session of the app window.
AppWindowMap app_windows_;
// Observed AppWindowRegistry.
base::ScopedObservation<AppWindowRegistry, AppWindowRegistry::Observer>
observed_app_registry_{this};
// Observed WindowControllerList.
base::ScopedObservation<WindowControllerList, WindowControllerListObserver>
observed_controller_list_{this};
#if BUILDFLAG(IS_MAC)
base::ScopedObservation<KeyWindowNotifier, KeyWindowNotifier::Observer>
observed_key_window_notifier_{this};
#endif
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_API_TABS_WINDOWS_EVENT_ROUTER_H_
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