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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.
#include "components/exo/wm_helper_mus.h"
#include "services/ui/public/cpp/window_tree_client.h"
#include "ui/aura/client/focus_client.h"
#include "ui/aura/env.h"
#include "ui/aura/window.h"
#include "ui/display/manager/managed_display_info.h"
#include "ui/views/mus/native_widget_mus.h"
#include "ui/views/mus/window_manager_connection.h"
#include "ui/views/widget/widget.h"
namespace exo {
namespace {
aura::Window* GetToplevelAuraWindow(ui::Window* window) {
DCHECK(window);
// We never create child ui::Window, so window->parent() should be null.
DCHECK(!window->parent());
views::Widget* widget = views::NativeWidgetMus::GetWidgetForWindow(window);
if (!widget)
return nullptr;
return widget->GetNativeWindow();
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// WMHelperMus, public:
WMHelperMus::WMHelperMus()
: active_window_(WMHelperMus::GetActiveWindow()),
focused_window_(WMHelperMus::GetFocusedWindow()) {
views::WindowManagerConnection::Get()->client()->AddObserver(this);
}
WMHelperMus::~WMHelperMus() {
views::WindowManagerConnection::Get()->client()->RemoveObserver(this);
}
////////////////////////////////////////////////////////////////////////////////
// WMHelperMus, private:
const display::ManagedDisplayInfo WMHelperMus::GetDisplayInfo(
int64_t display_id) const {
// TODO(penghuang): Return real display info when it is supported in mus.
return display::ManagedDisplayInfo(display_id, "", false);
}
aura::Window* WMHelperMus::GetContainer(int container_id) {
NOTIMPLEMENTED();
return nullptr;
}
aura::Window* WMHelperMus::GetActiveWindow() const {
ui::Window* window =
views::WindowManagerConnection::Get()->client()->GetFocusedWindow();
return window ? GetToplevelAuraWindow(window) : nullptr;
}
aura::Window* WMHelperMus::GetFocusedWindow() const {
aura::Window* active_window = GetActiveWindow();
if (!active_window)
return nullptr;
aura::client::FocusClient* focus_client =
aura::client::GetFocusClient(active_window);
return focus_client->GetFocusedWindow();
}
ui::CursorSetType WMHelperMus::GetCursorSet() const {
NOTIMPLEMENTED();
return ui::CursorSetType::CURSOR_SET_NORMAL;
}
void WMHelperMus::AddPreTargetHandler(ui::EventHandler* handler) {
aura::Env::GetInstance()->AddPreTargetHandler(handler);
}
void WMHelperMus::PrependPreTargetHandler(ui::EventHandler* handler) {
aura::Env::GetInstance()->PrependPreTargetHandler(handler);
}
void WMHelperMus::RemovePreTargetHandler(ui::EventHandler* handler) {
aura::Env::GetInstance()->RemovePreTargetHandler(handler);
}
void WMHelperMus::AddPostTargetHandler(ui::EventHandler* handler) {
aura::Env::GetInstance()->AddPostTargetHandler(handler);
}
void WMHelperMus::RemovePostTargetHandler(ui::EventHandler* handler) {
aura::Env::GetInstance()->RemovePostTargetHandler(handler);
}
bool WMHelperMus::IsMaximizeModeWindowManagerEnabled() const {
NOTIMPLEMENTED();
return false;
}
void WMHelperMus::OnWindowTreeFocusChanged(ui::Window* gained_focus,
ui::Window* lost_focus) {
aura::Window* gained_active =
gained_focus ? GetToplevelAuraWindow(gained_focus) : nullptr;
aura::Window* lost_active =
lost_focus ? GetToplevelAuraWindow(lost_focus) : nullptr;
// Because NativeWidgetMus uses separate FocusClient for every toplevel
// window, we have to stop observering the FocusClient of the |lost_active|
// and start observering the FocusClient of the |gained_active|.
if (active_window_) {
aura::client::FocusClient* focus_client =
aura::client::GetFocusClient(active_window_);
focus_client->RemoveObserver(this);
}
active_window_ = gained_active;
NotifyWindowActivated(gained_active, lost_active);
aura::Window* focused_window = nullptr;
if (active_window_) {
aura::client::FocusClient* focus_client =
aura::client::GetFocusClient(active_window_);
focus_client->AddObserver(this);
focused_window = focus_client->GetFocusedWindow();
}
// OnWindowFocused() will update |focused_window_|.
OnWindowFocused(focused_window, focused_window_);
}
void WMHelperMus::OnWindowFocused(aura::Window* gained_focus,
aura::Window* lost_focus) {
if (focused_window_ != gained_focus) {
focused_window_ = gained_focus;
NotifyWindowFocused(gained_focus, lost_focus);
}
}
} // namespace exo
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