ui/views/widget/native_widget

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
SetRestoreBounds
saved_window_state_
GetWindowTitleFontList
RegisterNativeWidgetForWindow
InitNativeWidget
CreateNonClientFrameView
ShouldUseNativeFrame
ShouldWindowContentsBeTransparent
FrameTypeChanged
GetWidget
GetWidget
GetNativeView
GetNativeWindow
GetTopLevelWidget
GetCompositor
GetCompositor
GetLayer
ReorderNativeViews
ViewRemoved
SetNativeWindowProperty
GetNativeWindowProperty
GetTooltipManager
SetCapture
ReleaseCapture
HasCapture
CreateInputMethod
GetInputMethodDelegate
CenterWindow
GetWindowPlacement
SetWindowTitle
SetWindowIcons
InitModalType
GetWindowBoundsInScreen
GetClientAreaBoundsInScreen
GetRestoredBounds
SetBounds
SetSize
StackAbove
StackAtTop
StackBelow
SetShape
Close
CloseNow
Show
Hide
ShowMaximizedWithBounds
ShowWithWindowState
IsVisible
Activate
Deactivate
IsActive
SetAlwaysOnTop
IsAlwaysOnTop
SetVisibleOnAllWorkspaces
Maximize
Minimize
IsMaximized
IsMinimized
Restore
SetFullscreen
IsFullscreen
SetOpacity
SetUseDragFrame
FlashFrame
RunShellDrag
SchedulePaintInRect
SetCursor
IsMouseEventsEnabled
ClearNativeFocus
GetWorkAreaBoundsInScreen
RunMoveLoop
EndMoveLoop
SetVisibilityChangedAnimationsEnabled
GetNativeTheme
OnRootViewLayout
DispatchKeyEventPostIME
GetMinimumSize
GetMaximumSize
OnBoundsChanged
GetCursor
GetNonClientComponent
ShouldDescendIntoChildForEventHandling
CanFocus
OnCaptureLost
OnPaint
OnDeviceScaleFactorChanged
OnWindowDestroying
OnWindowDestroyed
OnWindowTargetVisibilityChanged
HasHitTestMask
GetHitTestMask
OnKeyEvent
OnMouseEvent
OnScrollEvent
OnGestureEvent
ShouldActivate
OnWindowActivated
OnWindowFocused
OnDragEntered
OnDragUpdated
OnDragExited
OnPerformDrop
GetEventHandler
SetInitialFocus
CloseWindow
WindowCallbackProc
CloseAllSecondaryWidgets
ConvertRect
CreateNativeWidget
GetNativeWidgetForNativeView
GetNativeWidgetForNativeWindow
GetTopLevelNativeWidget
GetAllChildWidgets
GetAllOwnedWidgets
ReparentNativeView
IsMouseButtonDown
IsTouchDown
// Copyright (c) 2012 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 "ui/views/widget/native_widget_aura.h"

#include "base/bind.h"
#include "base/strings/string_util.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/client/cursor_client.h"
#include "ui/aura/client/focus_client.h"
#include "ui/aura/client/screen_position_client.h"
#include "ui/aura/client/window_tree_client.h"
#include "ui/aura/env.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_observer.h"
#include "ui/base/dragdrop/os_exchange_data.h"
#include "ui/base/ui_base_types.h"
#include "ui/compositor/layer.h"
#include "ui/events/event.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/font_list.h"
#include "ui/gfx/screen.h"
#include "ui/native_theme/native_theme_aura.h"
#include "ui/views/drag_utils.h"
#include "ui/views/ime/input_method_bridge.h"
#include "ui/views/views_delegate.h"
#include "ui/views/widget/drop_helper.h"
#include "ui/views/widget/native_widget_delegate.h"
#include "ui/views/widget/root_view.h"
#include "ui/views/widget/tooltip_manager_aura.h"
#include "ui/views/widget/widget_aura_utils.h"
#include "ui/views/widget/widget_delegate.h"
#include "ui/views/widget/window_reorderer.h"
#include "ui/wm/core/window_util.h"
#include "ui/wm/public/activation_client.h"
#include "ui/wm/public/drag_drop_client.h"
#include "ui/wm/public/window_move_client.h"
#include "ui/wm/public/window_types.h"

#if defined(OS_WIN)
#include "base/win/scoped_gdi_object.h"
#include "base/win/win_util.h"
#include "ui/base/l10n/l10n_util_win.h"
#include "ui/views/widget/desktop_aura/desktop_window_tree_host_win.h"
#endif

#if defined(USE_X11) && !defined(OS_CHROMEOS)
#include "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h"
#endif

#if !defined(OS_CHROMEOS)
#include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
#include "ui/views/widget/desktop_aura/desktop_window_tree_host.h"
#endif

namespace views {

namespace {

void SetRestoreBounds(aura::Window* window, const gfx::Rect& bounds) {
  window->SetProperty(aura::client::kRestoreBoundsKey, new gfx::Rect(bounds));
}

}  // namespace

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, public:

NativeWidgetAura::NativeWidgetAura(internal::NativeWidgetDelegate* delegate)
    : delegate_(delegate),
      window_(new aura::Window(this)),
      ownership_(Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET),
      close_widget_factory_(this),
      can_activate_(true),
      destroying_(false),
      cursor_(gfx::kNullCursor),
      saved_window_state_(ui::SHOW_STATE_DEFAULT) {
  aura::client::SetFocusChangeObserver(window_, this);
  aura::client::SetActivationChangeObserver(window_, this);
}

// static
gfx::FontList NativeWidgetAura::GetWindowTitleFontList() {
#if defined(OS_WIN)
  NONCLIENTMETRICS ncm;
  base::win::GetNonClientMetrics(&ncm);
  l10n_util::AdjustUIFont(&(ncm.lfCaptionFont));
  base::win::ScopedHFONT caption_font(CreateFontIndirect(&(ncm.lfCaptionFont)));
  return gfx::FontList(gfx::Font(caption_font));
#else
  return gfx::FontList();
#endif
}

// static
void NativeWidgetAura::RegisterNativeWidgetForWindow(
      internal::NativeWidgetPrivate* native_widget,
      aura::Window* window) {
  window->set_user_data(native_widget);
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, internal::NativeWidgetPrivate implementation:

void NativeWidgetAura::InitNativeWidget(const Widget::InitParams& params) {
  // Aura needs to know which desktop (Ash or regular) will manage this widget.
  // See Widget::InitParams::context for details.
  DCHECK(params.parent || params.context);

  ownership_ = params.ownership;

  RegisterNativeWidgetForWindow(this, window_);
  window_->SetType(GetAuraWindowTypeForWidgetType(params.type));
  window_->SetProperty(aura::client::kShowStateKey, params.show_state);
  if (params.type == Widget::InitParams::TYPE_BUBBLE)
    aura::client::SetHideOnDeactivate(window_, true);
  window_->SetTransparent(
      params.opacity == Widget::InitParams::TRANSLUCENT_WINDOW);
  window_->Init(params.layer_type);
  if (params.type == Widget::InitParams::TYPE_CONTROL)
    window_->Show();

  delegate_->OnNativeWidgetCreated(false);

  gfx::Rect window_bounds = params.bounds;
  gfx::NativeView parent = params.parent;
  gfx::NativeView context = params.context;
  if (!params.child) {
    // Set up the transient child before the window is added. This way the
    // LayoutManager knows the window has a transient parent.
    if (parent && parent->type() != ui::wm::WINDOW_TYPE_UNKNOWN) {
      wm::AddTransientChild(parent, window_);
      if (!context)
        context = parent;
      parent = NULL;
    }
    // SetAlwaysOnTop before SetParent so that always-on-top container is used.
    SetAlwaysOnTop(params.keep_on_top);
    // Make sure we have a real |window_bounds|.
    if (parent && window_bounds == gfx::Rect()) {
      // If a parent is specified but no bounds are given,
      // use the origin of the parent's display so that the widget
      // will be added to the same display as the parent.
      gfx::Rect bounds = gfx::Screen::GetScreenFor(parent)->
          GetDisplayNearestWindow(parent).bounds();
      window_bounds.set_origin(bounds.origin());
    }
  }

  if (parent) {
    parent->AddChild(window_);
  } else {
    aura::client::ParentWindowWithContext(
        window_, context->GetRootWindow(), window_bounds);
  }

  // Wait to set the bounds until we have a parent. That way we can know our
  // true state/bounds (the LayoutManager may enforce a particular
  // state/bounds).
  if (IsMaximized())
    SetRestoreBounds(window_, window_bounds);
  else
    SetBounds(window_bounds);
  window_->set_ignore_events(!params.accept_events);
  can_activate_ = params.can_activate &&
      params.type != Widget::InitParams::TYPE_CONTROL &&
      params.type != Widget::InitParams::TYPE_TOOLTIP;
  DCHECK(GetWidget()->GetRootView());
  if (params.type != Widget::InitParams::TYPE_TOOLTIP)
    tooltip_manager_.reset(new views::TooltipManagerAura(GetWidget()));

  drop_helper_.reset(new DropHelper(GetWidget()->GetRootView()));
  if (params.type != Widget::InitParams::TYPE_TOOLTIP &&
      params.type != Widget::InitParams::TYPE_POPUP) {
    aura::client::SetDragDropDelegate(window_, this);
  }

  aura::client::SetActivationDelegate(window_, this);

  window_->SetProperty(aura::client::kCanMaximizeKey,
                       GetWidget()->widget_delegate()->CanMaximize());
  window_->SetProperty(aura::client::kCanResizeKey,
                       GetWidget()->widget_delegate()->CanResize());

  window_reorderer_.reset(new WindowReorderer(window_,
      GetWidget()->GetRootView()));
}

NonClientFrameView* NativeWidgetAura::CreateNonClientFrameView() {
  return NULL;
}

bool NativeWidgetAura::ShouldUseNativeFrame() const {
  // There is only one frame type for aura.
  return false;
}

bool NativeWidgetAura::ShouldWindowContentsBeTransparent() const {
  return false;
}

void NativeWidgetAura::FrameTypeChanged() {
  // This is called when the Theme has changed; forward the event to the root
  // widget.
  GetWidget()->ThemeChanged();
  GetWidget()->GetRootView()->SchedulePaint();
}

Widget* NativeWidgetAura::GetWidget() {
  return delegate_->AsWidget();
}

const Widget* NativeWidgetAura::GetWidget() const {
  return delegate_->AsWidget();
}

gfx::NativeView NativeWidgetAura::GetNativeView() const {
  return window_;
}

gfx::NativeWindow NativeWidgetAura::GetNativeWindow() const {
  return window_;
}

Widget* NativeWidgetAura::GetTopLevelWidget() {
  NativeWidgetPrivate* native_widget = GetTopLevelNativeWidget(GetNativeView());
  return native_widget ? native_widget->GetWidget() : NULL;
}

const ui::Compositor* NativeWidgetAura::GetCompositor() const {
  return window_ ? window_->layer()->GetCompositor() : NULL;
}

ui::Compositor* NativeWidgetAura::GetCompositor() {
  return window_ ? window_->layer()->GetCompositor() : NULL;
}

ui::Layer* NativeWidgetAura::GetLayer() {
  return window_ ? window_->layer() : NULL;
}

void NativeWidgetAura::ReorderNativeViews() {
  window_reorderer_->ReorderChildWindows();
}

void NativeWidgetAura::ViewRemoved(View* view) {
  DCHECK(drop_helper_.get() != NULL);
  drop_helper_->ResetTargetViewIfEquals(view);
}

void NativeWidgetAura::SetNativeWindowProperty(const char* name, void* value) {
  if (window_)
    window_->SetNativeWindowProperty(name, value);
}

void* NativeWidgetAura::GetNativeWindowProperty(const char* name) const {
  return window_ ? window_->GetNativeWindowProperty(name) : NULL;
}

TooltipManager* NativeWidgetAura::GetTooltipManager() const {
  return tooltip_manager_.get();
}

void NativeWidgetAura::SetCapture() {
  if (window_)
    window_->SetCapture();
}

void NativeWidgetAura::ReleaseCapture() {
  if (window_)
    window_->ReleaseCapture();
}

bool NativeWidgetAura::HasCapture() const {
  return window_ && window_->HasCapture();
}

InputMethod* NativeWidgetAura::CreateInputMethod() {
  if (!window_)
    return NULL;
  aura::Window* root_window = window_->GetRootWindow();
  ui::InputMethod* host =
      root_window->GetProperty(aura::client::kRootWindowInputMethodKey);
  return new InputMethodBridge(this, host, true);
}

internal::InputMethodDelegate* NativeWidgetAura::GetInputMethodDelegate() {
  return this;
}

void NativeWidgetAura::CenterWindow(const gfx::Size& size) {
  if (!window_)
    return;

  gfx::Rect parent_bounds(window_->parent()->GetBoundsInRootWindow());
  // When centering window, we take the intersection of the host and
  // the parent. We assume the root window represents the visible
  // rect of a single screen.
  gfx::Rect work_area = gfx::Screen::GetScreenFor(window_)->
      GetDisplayNearestWindow(window_).work_area();

  aura::client::ScreenPositionClient* screen_position_client =
      aura::client::GetScreenPositionClient(window_->GetRootWindow());
  if (screen_position_client) {
    gfx::Point origin = work_area.origin();
    screen_position_client->ConvertPointFromScreen(window_->GetRootWindow(),
                                                   &origin);
    work_area.set_origin(origin);
  }

  parent_bounds.Intersect(work_area);

  // If |window_|'s transient parent's bounds are big enough to fit it, then we
  // center it with respect to the transient parent.
  if (wm::GetTransientParent(window_)) {
    gfx::Rect transient_parent_rect =
        wm::GetTransientParent(window_)->GetBoundsInRootWindow();
    transient_parent_rect.Intersect(work_area);
    if (transient_parent_rect.height() >= size.height() &&
        transient_parent_rect.width() >= size.width())
      parent_bounds = transient_parent_rect;
  }

  gfx::Rect window_bounds(
      parent_bounds.x() + (parent_bounds.width() - size.width()) / 2,
      parent_bounds.y() + (parent_bounds.height() - size.height()) / 2,
      size.width(),
      size.height());
  // Don't size the window bigger than the parent, otherwise the user may not be
  // able to close or move it.
  window_bounds.AdjustToFit(parent_bounds);

  // Convert the bounds back relative to the parent.
  gfx::Point origin = window_bounds.origin();
  aura::Window::ConvertPointToTarget(window_->GetRootWindow(),
      window_->parent(), &origin);
  window_bounds.set_origin(origin);
  window_->SetBounds(window_bounds);
}

void NativeWidgetAura::GetWindowPlacement(
    gfx::Rect* bounds,
    ui::WindowShowState* show_state) const {
  // The interface specifies returning restored bounds, not current bounds.
  *bounds = GetRestoredBounds();
  *show_state = window_ ? window_->GetProperty(aura::client::kShowStateKey) :
      ui::SHOW_STATE_DEFAULT;
}

bool NativeWidgetAura::SetWindowTitle(const base::string16& title) {
  if (!window_)
    return false;
  if (window_->title() == title)
    return false;
  window_->set_title(title);
  return true;
}

void NativeWidgetAura::SetWindowIcons(const gfx::ImageSkia& window_icon,
                                      const gfx::ImageSkia& app_icon) {
  // Aura doesn't have window icons.
}

void NativeWidgetAura::InitModalType(ui::ModalType modal_type) {
  if (modal_type != ui::MODAL_TYPE_NONE)
    window_->SetProperty(aura::client::kModalKey, modal_type);
}

gfx::Rect NativeWidgetAura::GetWindowBoundsInScreen() const {
  return window_ ? window_->GetBoundsInScreen() : gfx::Rect();
}

gfx::Rect NativeWidgetAura::GetClientAreaBoundsInScreen() const {
  // View-to-screen coordinate system transformations depend on this returning
  // the full window bounds, for example View::ConvertPointToScreen().
  return window_ ? window_->GetBoundsInScreen() : gfx::Rect();
}

gfx::Rect NativeWidgetAura::GetRestoredBounds() const {
  if (!window_)
    return gfx::Rect();

  // Restored bounds should only be relevant if the window is minimized or
  // maximized. However, in some places the code expects GetRestoredBounds()
  // to return the current window bounds if the window is not in either state.
  if (IsMinimized() || IsMaximized() || IsFullscreen()) {
    // Restore bounds are in screen coordinates, no need to convert.
    gfx::Rect* restore_bounds =
        window_->GetProperty(aura::client::kRestoreBoundsKey);
    if (restore_bounds)
      return *restore_bounds;
  }
  return window_->GetBoundsInScreen();
}

void NativeWidgetAura::SetBounds(const gfx::Rect& bounds) {
  if (!window_)
    return;

  aura::Window* root = window_->GetRootWindow();
  if (root) {
    aura::client::ScreenPositionClient* screen_position_client =
        aura::client::GetScreenPositionClient(root);
    if (screen_position_client) {
      gfx::Display dst_display =
          gfx::Screen::GetScreenFor(window_)->GetDisplayMatching(bounds);
      screen_position_client->SetBounds(window_, bounds, dst_display);
      return;
    }
  }
  window_->SetBounds(bounds);
}

void NativeWidgetAura::SetSize(const gfx::Size& size) {
  if (window_)
    window_->SetBounds(gfx::Rect(window_->bounds().origin(), size));
}

void NativeWidgetAura::StackAbove(gfx::NativeView native_view) {
  if (window_ && window_->parent() &&
      window_->parent() == native_view->parent())
    window_->parent()->StackChildAbove(window_, native_view);
}

void NativeWidgetAura::StackAtTop() {
  if (window_)
    window_->parent()->StackChildAtTop(window_);
}

void NativeWidgetAura::StackBelow(gfx::NativeView native_view) {
  if (window_ && window_->parent() &&
      window_->parent() == native_view->parent())
    window_->parent()->StackChildBelow(window_, native_view);
}

void NativeWidgetAura::SetShape(gfx::NativeRegion region) {
  // No need for this. Just delete and ignore.
  delete region;
}

void NativeWidgetAura::Close() {
  // |window_| may already be deleted by parent window. This can happen
  // when this widget is child widget or has transient parent
  // and ownership is WIDGET_OWNS_NATIVE_WIDGET.
  DCHECK(window_ ||
         ownership_ == Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET);
  if (window_) {
    window_->SuppressPaint();
    Hide();
    window_->SetProperty(aura::client::kModalKey, ui::MODAL_TYPE_NONE);
  }

  if (!close_widget_factory_.HasWeakPtrs()) {
    base::MessageLoop::current()->PostTask(
        FROM_HERE,
        base::Bind(&NativeWidgetAura::CloseNow,
                   close_widget_factory_.GetWeakPtr()));
  }
}

void NativeWidgetAura::CloseNow() {
  delete window_;
}

void NativeWidgetAura::Show() {
  ShowWithWindowState(ui::SHOW_STATE_NORMAL);
}

void NativeWidgetAura::Hide() {
  if (window_)
    window_->Hide();
}

void NativeWidgetAura::ShowMaximizedWithBounds(
    const gfx::Rect& restored_bounds) {
  SetRestoreBounds(window_, restored_bounds);
  ShowWithWindowState(ui::SHOW_STATE_MAXIMIZED);
}

void NativeWidgetAura::ShowWithWindowState(ui::WindowShowState state) {
  if (!window_)
    return;

  if (state == ui::SHOW_STATE_MAXIMIZED || state == ui::SHOW_STATE_FULLSCREEN)
    window_->SetProperty(aura::client::kShowStateKey, state);
  window_->Show();
  if (can_activate_) {
    if (state != ui::SHOW_STATE_INACTIVE)
      Activate();
    // SetInitialFocus() should be always be called, even for
    // SHOW_STATE_INACTIVE. If the window has to stay inactive, the method will
    // do the right thing.
    SetInitialFocus(state);
  }
}

bool NativeWidgetAura::IsVisible() const {
  return window_ && window_->IsVisible();
}

void NativeWidgetAura::Activate() {
  if (!window_)
    return;

  // We don't necessarily have a root window yet. This can happen with
  // constrained windows.
  if (window_->GetRootWindow()) {
    aura::client::GetActivationClient(window_->GetRootWindow())->ActivateWindow(
        window_);
  }
  if (window_->GetProperty(aura::client::kDrawAttentionKey))
    window_->SetProperty(aura::client::kDrawAttentionKey, false);
}

void NativeWidgetAura::Deactivate() {
  if (!window_)
    return;
  aura::client::GetActivationClient(window_->GetRootWindow())->DeactivateWindow(
      window_);
}

bool NativeWidgetAura::IsActive() const {
  return window_ && wm::IsActiveWindow(window_);
}

void NativeWidgetAura::SetAlwaysOnTop(bool on_top) {
  if (window_)
    window_->SetProperty(aura::client::kAlwaysOnTopKey, on_top);
}

bool NativeWidgetAura::IsAlwaysOnTop() const {
  return window_ && window_->GetProperty(aura::client::kAlwaysOnTopKey);
}

void NativeWidgetAura::SetVisibleOnAllWorkspaces(bool always_visible) {
  // Not implemented on chromeos or for child widgets.
}

void NativeWidgetAura::Maximize() {
  if (window_)
    window_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MAXIMIZED);
}

void NativeWidgetAura::Minimize() {
  if (window_)
    window_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MINIMIZED);
}

bool NativeWidgetAura::IsMaximized() const {
  return window_ && window_->GetProperty(aura::client::kShowStateKey) ==
      ui::SHOW_STATE_MAXIMIZED;
}

bool NativeWidgetAura::IsMinimized() const {
  return window_ && window_->GetProperty(aura::client::kShowStateKey) ==
      ui::SHOW_STATE_MINIMIZED;
}

void NativeWidgetAura::Restore() {
  if (window_)
    window_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_NORMAL);
}

void NativeWidgetAura::SetFullscreen(bool fullscreen) {
  if (!window_ || IsFullscreen() == fullscreen)
    return;  // Nothing to do.

  // Save window state before entering full screen so that it could restored
  // when exiting full screen.
  if (fullscreen)
    saved_window_state_ = window_->GetProperty(aura::client::kShowStateKey);

  window_->SetProperty(
      aura::client::kShowStateKey,
      fullscreen ? ui::SHOW_STATE_FULLSCREEN : saved_window_state_);
}

bool NativeWidgetAura::IsFullscreen() const {
  return window_ && window_->GetProperty(aura::client::kShowStateKey) ==
      ui::SHOW_STATE_FULLSCREEN;
}

void NativeWidgetAura::SetOpacity(unsigned char opacity) {
  if (window_)
    window_->layer()->SetOpacity(opacity / 255.0);
}

void NativeWidgetAura::SetUseDragFrame(bool use_drag_frame) {
  NOTIMPLEMENTED();
}

void NativeWidgetAura::FlashFrame(bool flash) {
  if (window_)
    window_->SetProperty(aura::client::kDrawAttentionKey, flash);
}

void NativeWidgetAura::RunShellDrag(View* view,
                                    const ui::OSExchangeData& data,
                                    const gfx::Point& location,
                                    int operation,
                                    ui::DragDropTypes::DragEventSource source) {
  if (window_)
    views::RunShellDrag(window_, data, location, operation, source);
}

void NativeWidgetAura::SchedulePaintInRect(const gfx::Rect& rect) {
  if (window_)
    window_->SchedulePaintInRect(rect);
}

void NativeWidgetAura::SetCursor(gfx::NativeCursor cursor) {
  cursor_ = cursor;
  aura::client::CursorClient* cursor_client =
      aura::client::GetCursorClient(window_->GetRootWindow());
  if (cursor_client)
    cursor_client->SetCursor(cursor);
}

bool NativeWidgetAura::IsMouseEventsEnabled() const {
  if (!window_)
    return false;
  aura::client::CursorClient* cursor_client =
      aura::client::GetCursorClient(window_->GetRootWindow());
  return cursor_client ? cursor_client->IsMouseEventsEnabled() : true;
}

void NativeWidgetAura::ClearNativeFocus() {
  aura::client::FocusClient* client = aura::client::GetFocusClient(window_);
  if (window_ && client && window_->Contains(client->GetFocusedWindow()))
    client->ResetFocusWithinActiveWindow(window_);
}

gfx::Rect NativeWidgetAura::GetWorkAreaBoundsInScreen() const {
  if (!window_)
    return gfx::Rect();
  return gfx::Screen::GetScreenFor(window_)->
      GetDisplayNearestWindow(window_).work_area();
}

Widget::MoveLoopResult NativeWidgetAura::RunMoveLoop(
    const gfx::Vector2d& drag_offset,
    Widget::MoveLoopSource source,
    Widget::MoveLoopEscapeBehavior escape_behavior) {
  // |escape_behavior| is only needed on windows when running the native message
  // loop.
  if (!window_ || !window_->GetRootWindow())
    return Widget::MOVE_LOOP_CANCELED;
  aura::client::WindowMoveClient* move_client =
      aura::client::GetWindowMoveClient(window_->GetRootWindow());
  if (!move_client)
    return Widget::MOVE_LOOP_CANCELED;

  SetCapture();
  aura::client::WindowMoveSource window_move_source =
      source == Widget::MOVE_LOOP_SOURCE_MOUSE ?
      aura::client::WINDOW_MOVE_SOURCE_MOUSE :
      aura::client::WINDOW_MOVE_SOURCE_TOUCH;
  if (move_client->RunMoveLoop(window_, drag_offset, window_move_source) ==
          aura::client::MOVE_SUCCESSFUL) {
    return Widget::MOVE_LOOP_SUCCESSFUL;
  }
  return Widget::MOVE_LOOP_CANCELED;
}

void NativeWidgetAura::EndMoveLoop() {
  if (!window_ || !window_->GetRootWindow())
    return;
  aura::client::WindowMoveClient* move_client =
      aura::client::GetWindowMoveClient(window_->GetRootWindow());
  if (move_client)
    move_client->EndMoveLoop();
}

void NativeWidgetAura::SetVisibilityChangedAnimationsEnabled(bool value) {
  if (window_)
    window_->SetProperty(aura::client::kAnimationsDisabledKey, !value);
}

ui::NativeTheme* NativeWidgetAura::GetNativeTheme() const {
#if !defined(OS_CHROMEOS)
  return DesktopWindowTreeHost::GetNativeTheme(window_);
#else
  return ui::NativeThemeAura::instance();
#endif
}

void NativeWidgetAura::OnRootViewLayout() const {
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, views::InputMethodDelegate implementation:

void NativeWidgetAura::DispatchKeyEventPostIME(const ui::KeyEvent& key) {
  FocusManager* focus_manager = GetWidget()->GetFocusManager();
  delegate_->OnKeyEvent(const_cast<ui::KeyEvent*>(&key));
  if (key.handled() || !focus_manager)
    return;
  focus_manager->OnKeyEvent(key);
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, aura::WindowDelegate implementation:

gfx::Size NativeWidgetAura::GetMinimumSize() const {
  return delegate_->GetMinimumSize();
}

gfx::Size NativeWidgetAura::GetMaximumSize() const {
  return delegate_->GetMaximumSize();
}

void NativeWidgetAura::OnBoundsChanged(const gfx::Rect& old_bounds,
                                       const gfx::Rect& new_bounds) {
  // Assume that if the old bounds was completely empty a move happened. This
  // handles the case of a maximize animation acquiring the layer (acquiring a
  // layer results in clearing the bounds).
  if (old_bounds.origin() != new_bounds.origin() ||
      (old_bounds == gfx::Rect(0, 0, 0, 0) && !new_bounds.IsEmpty())) {
    delegate_->OnNativeWidgetMove();
  }
  if (old_bounds.size() != new_bounds.size())
    delegate_->OnNativeWidgetSizeChanged(new_bounds.size());
}

gfx::NativeCursor NativeWidgetAura::GetCursor(const gfx::Point& point) {
  return cursor_;
}

int NativeWidgetAura::GetNonClientComponent(const gfx::Point& point) const {
  return delegate_->GetNonClientComponent(point);
}

bool NativeWidgetAura::ShouldDescendIntoChildForEventHandling(
      aura::Window* child,
      const gfx::Point& location) {
  views::WidgetDelegate* widget_delegate = GetWidget()->widget_delegate();
  if (widget_delegate &&
      !widget_delegate->ShouldDescendIntoChildForEventHandling(child, location))
    return false;

  // Don't descend into |child| if there is a view with a Layer that contains
  // the point and is stacked above |child|s layer.
  typedef std::vector<ui::Layer*> Layers;
  const Layers& root_layers(delegate_->GetRootLayers());
  if (root_layers.empty())
    return true;

  Layers::const_iterator child_layer_iter(
      std::find(window_->layer()->children().begin(),
                window_->layer()->children().end(), child->layer()));
  if (child_layer_iter == window_->layer()->children().end())
    return true;

  for (std::vector<ui::Layer*>::const_reverse_iterator i = root_layers.rbegin();
       i != root_layers.rend(); ++i) {
    ui::Layer* layer = *i;
    if (layer->visible() && layer->bounds().Contains(location)) {
      Layers::const_iterator root_layer_iter(
          std::find(window_->layer()->children().begin(),
                    window_->layer()->children().end(), layer));
      if (root_layer_iter > child_layer_iter)
        return false;
    }
  }
  return true;
}

bool NativeWidgetAura::CanFocus() {
  return can_activate_;
}

void NativeWidgetAura::OnCaptureLost() {
  delegate_->OnMouseCaptureLost();
}

void NativeWidgetAura::OnPaint(gfx::Canvas* canvas) {
  delegate_->OnNativeWidgetPaint(canvas);
}

void NativeWidgetAura::OnDeviceScaleFactorChanged(float device_scale_factor) {
  // Repainting with new scale factor will paint the content at the right scale.
}

void NativeWidgetAura::OnWindowDestroying(aura::Window* window) {
  delegate_->OnNativeWidgetDestroying();

  // If the aura::Window is destroyed, we can no longer show tooltips.
  tooltip_manager_.reset();
}

void NativeWidgetAura::OnWindowDestroyed(aura::Window* window) {
  window_ = NULL;
  delegate_->OnNativeWidgetDestroyed();
  if (ownership_ == Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET)
    delete this;
}

void NativeWidgetAura::OnWindowTargetVisibilityChanged(bool visible) {
  delegate_->OnNativeWidgetVisibilityChanged(visible);
}

bool NativeWidgetAura::HasHitTestMask() const {
  return delegate_->HasHitTestMask();
}

void NativeWidgetAura::GetHitTestMask(gfx::Path* mask) const {
  DCHECK(mask);
  delegate_->GetHitTestMask(mask);
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, ui::EventHandler implementation:

void NativeWidgetAura::OnKeyEvent(ui::KeyEvent* event) {
  DCHECK(window_);
  if (event->is_char()) {
    // If a ui::InputMethod object is attached to the root window, character
    // events are handled inside the object and are not passed to this function.
    // If such object is not attached, character events might be sent (e.g. on
    // Windows). In this case, we just skip these.
    return;
  }
  // Renderer may send a key event back to us if the key event wasn't handled,
  // and the window may be invisible by that time.
  if (!window_->IsVisible())
    return;
  GetWidget()->GetInputMethod()->DispatchKeyEvent(*event);
  event->SetHandled();
}

void NativeWidgetAura::OnMouseEvent(ui::MouseEvent* event) {
  DCHECK(window_);
  DCHECK(window_->IsVisible());
  if (event->type() == ui::ET_MOUSEWHEEL) {
    delegate_->OnMouseEvent(event);
    if (event->handled())
      return;
  }

  if (tooltip_manager_.get())
    tooltip_manager_->UpdateTooltip();
  TooltipManagerAura::UpdateTooltipManagerForCapture(GetWidget());
  delegate_->OnMouseEvent(event);
}

void NativeWidgetAura::OnScrollEvent(ui::ScrollEvent* event) {
  delegate_->OnScrollEvent(event);
}

void NativeWidgetAura::OnGestureEvent(ui::GestureEvent* event) {
  DCHECK(window_);
  DCHECK(window_->IsVisible() || event->IsEndingEvent());
  delegate_->OnGestureEvent(event);
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, aura::client::ActivationDelegate implementation:

bool NativeWidgetAura::ShouldActivate() const {
  return can_activate_ && delegate_->CanActivate();
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, aura::client::ActivationChangeObserver implementation:

void NativeWidgetAura::OnWindowActivated(aura::Window* gained_active,
                                         aura::Window* lost_active) {
  DCHECK(window_ == gained_active || window_ == lost_active);
  if (GetWidget()->GetFocusManager()) {
    if (window_ == gained_active)
      GetWidget()->GetFocusManager()->RestoreFocusedView();
    else if (window_ == lost_active)
      GetWidget()->GetFocusManager()->StoreFocusedView(true);
  }
  delegate_->OnNativeWidgetActivationChanged(window_ == gained_active);
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, aura::client::FocusChangeObserver:

void NativeWidgetAura::OnWindowFocused(aura::Window* gained_focus,
                                       aura::Window* lost_focus) {
  if (window_ == gained_focus) {
    // In aura, it is possible for child native widgets to take input and focus,
    // this differs from the behavior on windows.
    if (GetWidget()->GetInputMethod())  // Null in tests.
      GetWidget()->GetInputMethod()->OnFocus();
    delegate_->OnNativeFocus(lost_focus);
  } else if (window_ == lost_focus) {
    // GetInputMethod() recreates the input method if it's previously been
    // destroyed.  If we get called during destruction, the input method will be
    // gone, and creating a new one and telling it that we lost the focus will
    // trigger a DCHECK (the new input method doesn't think that we have the
    // focus and doesn't expect a blur).  OnBlur() shouldn't be called during
    // destruction unless WIDGET_OWNS_NATIVE_WIDGET is set (which is just the
    // case in tests).
    if (!destroying_) {
      if (GetWidget()->GetInputMethod())
        GetWidget()->GetInputMethod()->OnBlur();
    } else {
      DCHECK_EQ(ownership_, Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET);
    }

    aura::client::FocusClient* client = aura::client::GetFocusClient(window_);
    if (client)  // NULL during destruction of aura::Window.
      delegate_->OnNativeBlur(client->GetFocusedWindow());
  }
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, aura::WindowDragDropDelegate implementation:

void NativeWidgetAura::OnDragEntered(const ui::DropTargetEvent& event) {
  DCHECK(drop_helper_.get() != NULL);
  last_drop_operation_ = drop_helper_->OnDragOver(event.data(),
      event.location(), event.source_operations());
}

int NativeWidgetAura::OnDragUpdated(const ui::DropTargetEvent& event) {
  DCHECK(drop_helper_.get() != NULL);
  last_drop_operation_ = drop_helper_->OnDragOver(event.data(),
      event.location(), event.source_operations());
  return last_drop_operation_;
}

void NativeWidgetAura::OnDragExited() {
  DCHECK(drop_helper_.get() != NULL);
  drop_helper_->OnDragExit();
}

int NativeWidgetAura::OnPerformDrop(const ui::DropTargetEvent& event) {
  DCHECK(drop_helper_.get() != NULL);
  return drop_helper_->OnDrop(event.data(), event.location(),
      last_drop_operation_);
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, NativeWidget implementation:

ui::EventHandler* NativeWidgetAura::GetEventHandler() {
  return this;
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, protected:

NativeWidgetAura::~NativeWidgetAura() {
  destroying_ = true;
  if (ownership_ == Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET)
    delete delegate_;
  else
    CloseNow();
}

////////////////////////////////////////////////////////////////////////////////
// NativeWidgetAura, private:

void NativeWidgetAura::SetInitialFocus(ui::WindowShowState show_state) {
  // The window does not get keyboard messages unless we focus it.
  if (!GetWidget()->SetInitialFocus(show_state))
    window_->Focus();
}

////////////////////////////////////////////////////////////////////////////////
// Widget, public:

namespace {
#if defined(OS_WIN) || (defined(USE_X11) && !defined(OS_CHROMEOS))
void CloseWindow(aura::Window* window) {
  if (window) {
    Widget* widget = Widget::GetWidgetForNativeView(window);
    if (widget && widget->is_secondary_widget())
      // To avoid the delay in shutdown caused by using Close which may wait
      // for animations, use CloseNow. Because this is only used on secondary
      // widgets it seems relatively safe to skip the extra processing of
      // Close.
      widget->CloseNow();
  }
}
#endif

#if defined(OS_WIN)
BOOL CALLBACK WindowCallbackProc(HWND hwnd, LPARAM lParam) {
  aura::Window* root_window =
      DesktopWindowTreeHostWin::GetContentWindowForHWND(hwnd);
  CloseWindow(root_window);
  return TRUE;
}
#endif
}  // namespace

// static
void Widget::CloseAllSecondaryWidgets() {
#if defined(OS_WIN)
  EnumThreadWindows(GetCurrentThreadId(), WindowCallbackProc, 0);
#endif

#if defined(USE_X11) && !defined(OS_CHROMEOS)
  std::vector<aura::Window*> open_windows =
      DesktopWindowTreeHostX11::GetAllOpenWindows();
  std::for_each(open_windows.begin(), open_windows.end(), CloseWindow);
  DesktopWindowTreeHostX11::CleanUpWindowList();
#endif
}

bool Widget::ConvertRect(const Widget* source,
                         const Widget* target,
                         gfx::Rect* rect) {
  return false;
}

namespace internal {

////////////////////////////////////////////////////////////////////////////////
// internal::NativeWidgetPrivate, public:

// static
NativeWidgetPrivate* NativeWidgetPrivate::CreateNativeWidget(
    internal::NativeWidgetDelegate* delegate) {
  return new NativeWidgetAura(delegate);
}

// static
NativeWidgetPrivate* NativeWidgetPrivate::GetNativeWidgetForNativeView(
    gfx::NativeView native_view) {
  // Cast must match type supplied to RegisterNativeWidgetForWindow().
  return reinterpret_cast<NativeWidgetPrivate*>(native_view->user_data());
}

// static
NativeWidgetPrivate* NativeWidgetPrivate::GetNativeWidgetForNativeWindow(
    gfx::NativeWindow native_window) {
  // Cast must match type supplied to RegisterNativeWidgetForWindow().
  return reinterpret_cast<NativeWidgetPrivate*>(native_window->user_data());
}

// static
NativeWidgetPrivate* NativeWidgetPrivate::GetTopLevelNativeWidget(
    gfx::NativeView native_view) {
  aura::Window* window = native_view;
  NativeWidgetPrivate* top_level_native_widget = NULL;
  while (window) {
    NativeWidgetPrivate* native_widget = GetNativeWidgetForNativeView(window);
    if (native_widget)
      top_level_native_widget = native_widget;
    window = window->parent();
  }
  return top_level_native_widget;
}

// static
void NativeWidgetPrivate::GetAllChildWidgets(gfx::NativeView native_view,
                                             Widget::Widgets* children) {
  {
    // Code expects widget for |native_view| to be added to |children|.
    NativeWidgetPrivate* native_widget = static_cast<NativeWidgetPrivate*>(
        GetNativeWidgetForNativeView(native_view));
    if (native_widget && native_widget->GetWidget())
      children->insert(native_widget->GetWidget());
  }

  const aura::Window::Windows& child_windows = native_view->children();
  for (aura::Window::Windows::const_iterator i = child_windows.begin();
       i != child_windows.end(); ++i) {
    GetAllChildWidgets((*i), children);
  }
}

// static
void NativeWidgetPrivate::GetAllOwnedWidgets(gfx::NativeView native_view,
                                             Widget::Widgets* owned) {
  const aura::Window::Windows& transient_children =
      wm::GetTransientChildren(native_view);
  for (aura::Window::Windows::const_iterator i = transient_children.begin();
       i != transient_children.end(); ++i) {
    NativeWidgetPrivate* native_widget = static_cast<NativeWidgetPrivate*>(
        GetNativeWidgetForNativeView(*i));
    if (native_widget && native_widget->GetWidget())
      owned->insert(native_widget->GetWidget());
    GetAllOwnedWidgets((*i), owned);
  }
}

// static
void NativeWidgetPrivate::ReparentNativeView(gfx::NativeView native_view,
                                             gfx::NativeView new_parent) {
  DCHECK(native_view != new_parent);

  gfx::NativeView previous_parent = native_view->parent();
  if (previous_parent == new_parent)
    return;

  Widget::Widgets widgets;
  GetAllChildWidgets(native_view, &widgets);

  // First notify all the widgets that they are being disassociated
  // from their previous parent.
  for (Widget::Widgets::iterator it = widgets.begin();
      it != widgets.end(); ++it) {
    (*it)->NotifyNativeViewHierarchyWillChange();
  }

  if (new_parent) {
    new_parent->AddChild(native_view);
  } else {
    // The following looks weird, but it's the equivalent of what aura has
    // always done. (The previous behaviour of aura::Window::SetParent() used
    // NULL as a special value that meant ask the WindowTreeClient where things
    // should go.)
    //
    // This probably isn't strictly correct, but its an invariant that a Window
    // in use will be attached to a RootWindow, so we can't just call
    // RemoveChild here. The only possible thing that could assign a RootWindow
    // in this case is the stacking client of the current RootWindow. This
    // matches our previous behaviour; the global stacking client would almost
    // always reattach the window to the same RootWindow.
    aura::Window* root_window = native_view->GetRootWindow();
    aura::client::ParentWindowWithContext(
        native_view, root_window, root_window->GetBoundsInScreen());
  }

  // And now, notify them that they have a brand new parent.
  for (Widget::Widgets::iterator it = widgets.begin();
      it != widgets.end(); ++it) {
    (*it)->NotifyNativeViewHierarchyChanged();
  }
}

// static
bool NativeWidgetPrivate::IsMouseButtonDown() {
  return aura::Env::GetInstance()->IsMouseButtonDown();
}

// static
bool NativeWidgetPrivate::IsTouchDown() {
  return aura::Env::GetInstance()->is_touch_down();
}

}  // namespace internal
}  // namespace views
/* [<][>][^][v][top][bottom][index][help] */
root/ui/views/widget/native_widget_aura.cc

DEFINITIONS
