blob: 30a7c67d75660153f45b29e11cf1b22e0190ade9 [file] [log] [blame]
// 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 <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/observer_list.h"
#include "base/optional.h"
#include "base/scoped_observer.h"
#include "build/build_config.h"
#include "ui/base/ui_base_types.h"
#include "ui/events/event_source.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/native_theme/native_theme_observer.h"
#include "ui/views/focus/focus_manager.h"
#include "ui/views/widget/native_widget_delegate.h"
#include "ui/views/window/client_view.h"
#include "ui/views/window/non_client_view.h"
namespace base {
class TimeDelta;
namespace gfx {
class Point;
class Rect;
namespace ui {
class Accelerator;
class Compositor;
class DefaultThemeProvider;
class GestureRecognizer;
class InputMethod;
class Layer;
class NativeTheme;
class OSExchangeData;
class ThemeProvider;
} // namespace ui
namespace views {
class DesktopWindowTreeHost;
class NativeWidget;
class NonClientFrameView;
class TooltipManager;
class View;
class WidgetDelegate;
class WidgetObserver;
class WidgetRemovalsObserver;
namespace internal {
class NativeWidgetPrivate;
class RootView;
// Widget class
// Encapsulates the platform-specific rendering, event receiving and widget
// management aspects of the UI framework.
// Owns a RootView and thus a View hierarchy. Can contain child Widgets.
// Widget is a platform-independent type that communicates with a platform or
// context specific NativeWidget implementation.
// A special note on ownership:
// Depending on the value of the InitParams' ownership field, the Widget
// either owns or is owned by its NativeWidget:
// ownership = NATIVE_WIDGET_OWNS_WIDGET (default)
// The Widget instance is owned by its NativeWidget. When the NativeWidget
// is destroyed (in response to a native destruction message), it deletes
// the Widget from its destructor.
// ownership = WIDGET_OWNS_NATIVE_WIDGET (non-default)
// The Widget instance owns its NativeWidget. This state implies someone
// else wants to control the lifetime of this object. When they destroy
// the Widget it is responsible for destroying the NativeWidget (from its
// destructor). This is often used to place a Widget in a std::unique_ptr<>
// or on the stack in a test.
class VIEWS_EXPORT Widget : public internal::NativeWidgetDelegate,
public ui::EventSource,
public FocusTraversable,
public ui::NativeThemeObserver {
using Widgets = std::set<Widget*>;
using ShapeRects = std::vector<gfx::Rect>;
enum FrameType {
FRAME_TYPE_DEFAULT, // Use whatever the default would be.
FRAME_TYPE_FORCE_CUSTOM, // Force the custom frame.
FRAME_TYPE_FORCE_NATIVE // Force the native frame.
// Result from RunMoveLoop().
enum MoveLoopResult {
// The move loop completed successfully.
// The user canceled the move loop.
// Source that initiated the move loop.
enum MoveLoopSource {
// Behavior when escape is pressed during a move loop.
enum MoveLoopEscapeBehavior {
// Indicates the window should be hidden.
// Indicates the window should not be hidden.
// Type of visibility change transition that should animate.
enum VisibilityTransition {
struct VIEWS_EXPORT InitParams {
enum Type {
TYPE_WINDOW, // A decorated Window, like a frame window.
// Widgets of TYPE_WINDOW will have a NonClientView.
TYPE_PANEL, // Always on top window managed by PanelManager.
// Widgets of TYPE_PANEL will have a NonClientView.
// An undecorated Window.
TYPE_CONTROL, // A control, like a button.
TYPE_POPUP, // An undecorated Window, with transient properties.
TYPE_MENU, // An undecorated Window, with transient properties
// specialized to menus.
TYPE_DRAG, // An undecorated Window, used during a drag-and-drop to
// show the drag image.
enum WindowOpacity {
// Infer fully opaque or not. For WinAura, top-level windows that are not
// of TYPE_WINDOW are translucent so that they can be made to fade in.
// For LinuxAura, only windows that are TYPE_DRAG are translucent. In all
// other cases, windows are fully opaque.
// Fully opaque.
// Possibly translucent/transparent. Widgets that fade in or out using
// SetOpacity() but do not make use of an alpha channel should use
enum Activatable {
// Infer whether the window should be activatable from the window type.
enum Ownership {
// Default. Creator is not responsible for managing the lifetime of the
// Widget, it is destroyed when the corresponding NativeWidget is
// destroyed.
// Used when the Widget is owned by someone other than the NativeWidget,
// e.g. a scoped_ptr in tests.
enum ShadowType {
SHADOW_TYPE_DEFAULT, // Use default shadow setting. It will be one of
// the settings below depending on InitParams::type
// and the native widget's type.
SHADOW_TYPE_NONE, // Don't draw any shadow.
SHADOW_TYPE_DROP, // Draw a drop shadow that emphasizes Z-order
// relationship to other windows.
explicit InitParams(Type type);
InitParams(const InitParams& other);
// Returns the activatablity based on |activatable|, but also handles the
// case where |activatable| is |ACTIVATABLE_DEFAULT|.
bool CanActivate() const;
Type type;
// If null, a default implementation will be constructed. The default
// implementation deletes itself when the Widget closes.
WidgetDelegate* delegate;
// Internal name. Propagated to the NativeWidget. Useful for debugging.
std::string name;
bool child;
// If TRANSLUCENT_WINDOW, the widget may be fully or partially transparent.
// If OPAQUE_WINDOW, we can perform optimizations based on the widget being
// fully opaque.
// Default is based on ViewsDelegate::GetOpacityForInitParams(). Defaults
// to OPAQUE_WINDOW for non-window widgets.
// Translucent windows may not always be supported. Use
// IsTranslucentWindowOpacitySupported to determine whether they are.
WindowOpacity opacity;
bool accept_events;
Activatable activatable;
bool keep_on_top;
bool visible_on_all_workspaces;
// See Widget class comment above.
Ownership ownership;
bool mirror_origin_in_rtl;
ShadowType shadow_type;
// A hint about the size of the shadow if the type is SHADOW_TYPE_DROP. May
// be ignored on some platforms. No value indicates no preference.
base::Optional<int> shadow_elevation;
// The window corner radius. May be ignored on some platforms.
base::Optional<int> corner_radius;
// Specifies that the system default caption and icon should not be
// rendered, and that the client area should be equivalent to the window
// area. Only used on some platforms (Windows and Linux).
bool remove_standard_frame;
// Only used by ShellWindow on Windows. Specifies that the default icon of
// packaged app should be the system default icon.
bool use_system_default_icon;
// Whether the widget should be maximized or minimized.
ui::WindowShowState show_state;
gfx::NativeView parent;
// Specifies the initial bounds of the Widget. Default is empty, which means
// the NativeWidget may specify a default size. If the parent is specified,
// |bounds| is in the parent's coordinate system. If the parent is not
// specified, it's in screen's global coordinate system.
gfx::Rect bounds;
// The initial workspace of the Widget. Default is "", which means the
// current workspace.
std::string workspace;
// When set, this value is used as the Widget's NativeWidget implementation.
// The Widget will not construct a default one. Default is NULL.
NativeWidget* native_widget;
// Aura-only. Provides a DesktopWindowTreeHost implementation to use instead
// of the default one.
// TODO(beng): Figure out if there's a better way to expose this, e.g. get
// rid of NW subclasses and do this all via message handling.
DesktopWindowTreeHost* desktop_window_tree_host;
// Only used by NativeWidgetAura. Specifies the type of layer for the
// aura::Window. Default is ui::LAYER_TEXTURED.
ui::LayerType layer_type;
// Only used by Aura. Provides a context window whose RootWindow is
// consulted during widget creation to determine where in the Window
// hierarchy this widget should be placed. (This is separate from |parent|;
// if you pass a RootWindow to |parent|, your window will be parented to
// |parent|. If you pass a RootWindow to |context|, we ask that RootWindow
// where it wants your window placed.) Nullptr is not allowed on Windows and
// Linux. Nullptr is allowed on Chrome OS, which will place the window on
// the default desktop for new windows.
gfx::NativeWindow context;
// If true, forces the window to be shown in the taskbar, even for window
// types that do not appear in the taskbar by default (popup and bubble).
bool force_show_in_taskbar;
// Only used by X11, for root level windows. Specifies the res_name and
// res_class fields, respectively, of the WM_CLASS window property. Controls
// window grouping and desktop file matching in Linux window managers.
std::string wm_role_name;
std::string wm_class_name;
std::string wm_class_class;
// If true then the widget uses software compositing. Defaults to false.
// Only used on Windows.
bool force_software_compositing;
// Used if widget is not activatable to do determine if mouse events should
// be sent to the widget.
bool wants_mouse_events_when_inactive = false;
// A map of properties applied to windows when running in mus.
std::map<std::string, std::vector<uint8_t>> mus_properties;
~Widget() override;
// Creates a decorated window Widget with the specified properties. The
// returned Widget is owned by its NativeWidget; see Widget class comment for
// details.
static Widget* CreateWindowWithParent(WidgetDelegate* delegate,
gfx::NativeView parent);
static Widget* CreateWindowWithParentAndBounds(WidgetDelegate* delegate,
gfx::NativeView parent,
const gfx::Rect& bounds);
// Creates a decorated window Widget in the same desktop context as |context|.
// The returned Widget is owned by its NativeWidget; see Widget class comment
// for details.
static Widget* CreateWindowWithContext(WidgetDelegate* delegate,
gfx::NativeWindow context);
static Widget* CreateWindowWithContextAndBounds(WidgetDelegate* delegate,
gfx::NativeWindow context,
const gfx::Rect& bounds);
// Closes all Widgets that aren't identified as "secondary widgets". Called
// during application shutdown when the last non-secondary widget is closed.
static void CloseAllSecondaryWidgets();
// Retrieves the Widget implementation associated with the given
// NativeView or Window, or NULL if the supplied handle has no associated
// Widget.
static Widget* GetWidgetForNativeView(gfx::NativeView native_view);
static Widget* GetWidgetForNativeWindow(gfx::NativeWindow native_window);
// Retrieves the top level widget in a native view hierarchy
// starting at |native_view|. Top level widget is a widget with TYPE_WINDOW,
// focus manager. This may be itself if the |native_view| is top level,
// or NULL if there is no toplevel in a native view hierarchy.
static Widget* GetTopLevelWidgetForNativeView(gfx::NativeView native_view);
// Returns all Widgets in |native_view|'s hierarchy, including itself if
// it is one.
static void GetAllChildWidgets(gfx::NativeView native_view,
Widgets* children);
// Returns all Widgets owned by |native_view| (including child widgets, but
// not including itself).
static void GetAllOwnedWidgets(gfx::NativeView native_view,
Widgets* owned);
// Re-parent a NativeView and notify all Widgets in |native_view|'s hierarchy
// of the change.
static void ReparentNativeView(gfx::NativeView native_view,
gfx::NativeView new_parent);
// Returns the preferred size of the contents view of this window based on
// its localized size data. The width in cols is held in a localized string
// resource identified by |col_resource_id|, the height in the same fashion.
// TODO(beng): This should eventually live somewhere else, probably closer to
// ClientView.
static int GetLocalizedContentsWidth(int col_resource_id);
static int GetLocalizedContentsHeight(int row_resource_id);
static gfx::Size GetLocalizedContentsSize(int col_resource_id,
int row_resource_id);
// Returns true if the specified type requires a NonClientView.
static bool RequiresNonClientView(InitParams::Type type);
void Init(const InitParams& params);
// Returns the gfx::NativeView associated with this Widget.
gfx::NativeView GetNativeView() const;
// Returns the gfx::NativeWindow associated with this Widget. This may return
// NULL on some platforms if the widget was created with a type other than
gfx::NativeWindow GetNativeWindow() const;
// Add/remove observer.
void AddObserver(WidgetObserver* observer);
void RemoveObserver(WidgetObserver* observer);
bool HasObserver(const WidgetObserver* observer) const;
// Add/remove removals observer.
void AddRemovalsObserver(WidgetRemovalsObserver* observer);
void RemoveRemovalsObserver(WidgetRemovalsObserver* observer);
bool HasRemovalsObserver(const WidgetRemovalsObserver* observer) const;
// Returns the accelerator given a command id. Returns false if there is
// no accelerator associated with a given id, which is a common condition.
virtual bool GetAccelerator(int cmd_id, ui::Accelerator* accelerator) const;
// Forwarded from the RootView so that the widget can do any cleanup.
void ViewHierarchyChanged(const View::ViewHierarchyChangedDetails& details);
// Called right before changing the widget's parent NativeView to do any
// cleanup.
void NotifyNativeViewHierarchyWillChange();
// Called after changing the widget's parent NativeView. Notifies the RootView
// about the change.
void NotifyNativeViewHierarchyChanged();
// Called immediately before removing |view| from this widget.
void NotifyWillRemoveView(View* view);
// Returns the top level widget in a hierarchy (see is_top_level() for
// the definition of top level widget.) Will return NULL if called
// before the widget is attached to the top level widget's hierarchy.
Widget* GetTopLevelWidget();
const Widget* GetTopLevelWidget() const;
// Gets/Sets the WidgetDelegate.
WidgetDelegate* widget_delegate() const { return widget_delegate_; }
// Sets the specified view as the contents of this Widget. There can only
// be one contents view child of this Widget's RootView. This view is sized to
// fit the entire size of the RootView. The RootView takes ownership of this
// View, unless it is set as not being parent-owned.
void SetContentsView(View* view);
// NOTE: This may not be the same view as WidgetDelegate::GetContentsView().
// See RootView::GetContentsView().
View* GetContentsView();
// Returns the bounds of the Widget in screen coordinates.
gfx::Rect GetWindowBoundsInScreen() const;
// Returns the bounds of the Widget's client area in screen coordinates.
gfx::Rect GetClientAreaBoundsInScreen() const;
// Retrieves the restored bounds for the window.
gfx::Rect GetRestoredBounds() const;
// Retrieves the current workspace for the window.
std::string GetWorkspace() const;
// Sizes and/or places the widget to the specified bounds, size or position.
void SetBounds(const gfx::Rect& bounds);
void SetSize(const gfx::Size& size);
// Sizes the window to the specified size and centerizes it.
void CenterWindow(const gfx::Size& size);
// Like SetBounds(), but ensures the Widget is fully visible on screen or
// parent widget, resizing and/or repositioning as necessary.
void SetBoundsConstrained(const gfx::Rect& bounds);
// Sets whether animations that occur when visibility is changed are enabled.
// Default is true.
void SetVisibilityChangedAnimationsEnabled(bool value);
// Sets the duration of visibility change animations.
void SetVisibilityAnimationDuration(const base::TimeDelta& duration);
// Sets the visibility transitions that should animate.
// Default behavior is to animate both show and hide.
void SetVisibilityAnimationTransition(VisibilityTransition transition);
// Starts a nested run loop that moves the window. This can be used to
// start a window move operation from a mouse or touch event. This returns
// when the move completes. |drag_offset| is the offset from the top left
// corner of the window to the point where the cursor is dragging, and is used
// to offset the bounds of the window from the cursor.
MoveLoopResult RunMoveLoop(const gfx::Vector2d& drag_offset,
MoveLoopSource source,
MoveLoopEscapeBehavior escape_behavior);
// Stops a previously started move loop. This is not immediate.
void EndMoveLoop();
// Places the widget in front of the specified widget in z-order.
void StackAboveWidget(Widget* widget);
void StackAbove(gfx::NativeView native_view);
void StackAtTop();
// Sets a shape on the widget. Passing a NULL |shape| reverts the widget to
// be rectangular.
void SetShape(std::unique_ptr<ShapeRects> shape);
// Hides the widget then closes it after a return to the message loop.
virtual void Close();
// TODO(beng): Move off public API.
// Closes the widget immediately. Compare to |Close|. This will destroy the
// window handle associated with this Widget, so should not be called from
// any code that expects it to be valid beyond this call.
void CloseNow();
// Whether the widget has been asked to close itself. In particular this is
// set to true after Close() has been invoked on the NativeWidget.
bool IsClosed() const;
// Shows the widget. The widget is activated if during initialization the
// can_activate flag in the InitParams structure is set to true.
void Show();
// Hides the widget.
void Hide();
// Like Show(), but does not activate the window.
void ShowInactive();
// Activates the widget, assuming it already exists and is visible.
void Activate();
// Deactivates the widget, making the next window in the Z order the active
// window.
void Deactivate();
// Returns whether the Widget is the currently active window.
virtual bool IsActive() const;
// Sets the widget to be on top of all other widgets in the windowing system.
void SetAlwaysOnTop(bool on_top);
// Returns whether the widget has been set to be on top of most other widgets
// in the windowing system.
bool IsAlwaysOnTop() const;
// Sets the widget to be visible on all work spaces.
void SetVisibleOnAllWorkspaces(bool always_visible);
// Is this widget currently visible on all workspaces?
// A call to SetVisibleOnAllWorkspaces(true) won't necessarily mean
// IsVisbleOnAllWorkspaces() == true (for example, when the platform doesn't
// support workspaces).
bool IsVisibleOnAllWorkspaces() const;
// Maximizes/minimizes/restores the window.
void Maximize();
void Minimize();
void Restore();
// Whether or not the window is maximized or minimized.
virtual bool IsMaximized() const;
bool IsMinimized() const;
// Accessors for fullscreen state.
void SetFullscreen(bool fullscreen);
bool IsFullscreen() const;
// Sets the opacity of the widget. This may allow widgets behind the widget
// in the Z-order to become visible, depending on the capabilities of the
// underlying windowing system.
void SetOpacity(float opacity);
// Sets the aspect ratio of the widget's content, which will be maintained
// during interactive resizing. This size disregards title bar and borders.
// Once set, some platforms ensure the content will only size to integer
// multiples of |aspect_ratio|.
void SetAspectRatio(const gfx::SizeF& aspect_ratio);
// Flashes the frame of the window to draw attention to it. Currently only
// implemented on Windows for non-Aura.
void FlashFrame(bool flash);
// Returns the View at the root of the View hierarchy contained by this
// Widget.
View* GetRootView();
const View* GetRootView() const;
// A secondary widget is one that is automatically closed (via Close()) when
// all non-secondary widgets are closed.
// Default is true.
// TODO(beng): This is an ugly API, should be handled implicitly via
// transience.
void set_is_secondary_widget(bool is_secondary_widget) {
is_secondary_widget_ = is_secondary_widget;
bool is_secondary_widget() const { return is_secondary_widget_; }
// Returns whether the Widget is visible to the user.
virtual bool IsVisible() const;
// Returns the ThemeProvider that provides theme resources for this Widget.
virtual const ui::ThemeProvider* GetThemeProvider() const;
ui::NativeTheme* GetNativeTheme() {
return const_cast<ui::NativeTheme*>(
const_cast<const Widget*>(this)->GetNativeTheme());
virtual const ui::NativeTheme* GetNativeTheme() const;
// Returns the FocusManager for this widget.
// Note that all widgets in a widget hierarchy share the same focus manager.
FocusManager* GetFocusManager();
const FocusManager* GetFocusManager() const;
// Returns the ui::InputMethod for this widget.
ui::InputMethod* GetInputMethod();
// Starts a drag operation for the specified view. This blocks until the drag
// operation completes. |view| can be NULL.
// If the view is non-NULL it can be accessed during the drag by calling
// dragged_view(). If the view has not been deleted during the drag,
// OnDragDone() is called on it. |location| is in the widget's coordinate
// system.
void RunShellDrag(View* view,
const ui::OSExchangeData& data,
const gfx::Point& location,
int operation,
ui::DragDropTypes::DragEventSource source);
// Returns the view that requested the current drag operation via
// RunShellDrag(), or NULL if there is no such view or drag operation.
View* dragged_view() {
return const_cast<View*>(const_cast<const Widget*>(this)->dragged_view());
const View* dragged_view() const { return dragged_view_; }
// Adds the specified |rect| in client area coordinates to the rectangle to be
// redrawn.
virtual void SchedulePaintInRect(const gfx::Rect& rect);
// Sets the currently visible cursor. If |cursor| is NULL, the cursor used
// before the current is restored.
void SetCursor(gfx::NativeCursor cursor);
// Returns true if and only if mouse events are enabled.
bool IsMouseEventsEnabled() const;
// Sets/Gets a native window property on the underlying native window object.
// Returns NULL if the property does not exist. Setting the property value to
// NULL removes the property.
void SetNativeWindowProperty(const char* name, void* value);
void* GetNativeWindowProperty(const char* name) const;
// Tell the window to update its title from the delegate.
void UpdateWindowTitle();
// Tell the window to update its icon from the delegate.
void UpdateWindowIcon();
// Retrieves the focus traversable for this widget.
FocusTraversable* GetFocusTraversable();
// Notifies the view hierarchy contained in this widget that theme resources
// changed.
void ThemeChanged();
// Notifies the view hierarchy contained in this widget that the device scale
// factor changed.
void DeviceScaleFactorChanged(float old_device_scale_factor,
float new_device_scale_factor);
void SetFocusTraversableParent(FocusTraversable* parent);
void SetFocusTraversableParentView(View* parent_view);
// Clear native focus set to the Widget's NativeWidget.
void ClearNativeFocus();
void set_frame_type(FrameType frame_type) { frame_type_ = frame_type; }
FrameType frame_type() const { return frame_type_; }
// Creates an appropriate NonClientFrameView for this widget. The
// WidgetDelegate is given the first opportunity to create one, followed by
// the NativeWidget implementation. If both return NULL, a default one is
// created.
virtual NonClientFrameView* CreateNonClientFrameView();
// Whether we should be using a native frame.
bool ShouldUseNativeFrame() const;
// Determines whether the window contents should be rendered transparently
// (for example, so that they can overhang onto the window title bar).
bool ShouldWindowContentsBeTransparent() const;
// Forces the frame into the alternate frame type (custom or native) depending
// on its current state.
void DebugToggleFrameType();
// Tell the window that something caused the frame type to change.
void FrameTypeChanged();
NonClientView* non_client_view() {
return const_cast<NonClientView*>(
const_cast<const Widget*>(this)->non_client_view());
const NonClientView* non_client_view() const {
return non_client_view_;
ClientView* client_view() {
return const_cast<ClientView*>(
const_cast<const Widget*>(this)->client_view());
const ClientView* client_view() const {
// non_client_view_ may be NULL, especially during creation.
return non_client_view_ ? non_client_view_->client_view() : NULL;
ui::Compositor* GetCompositor() {
return const_cast<ui::Compositor*>(
const_cast<const Widget*>(this)->GetCompositor());
const ui::Compositor* GetCompositor() const;
// Returns the widget's layer, if any.
ui::Layer* GetLayer() {
return const_cast<ui::Layer*>(
const_cast<const Widget*>(this)->GetLayer());
const ui::Layer* GetLayer() const;
// Reorders the widget's child NativeViews which are associated to the view
// tree (eg via a NativeViewHost) to match the z-order of the views in the
// view tree. The z-order of views with layers relative to views with
// associated NativeViews is used to reorder the NativeView layers. This
// method assumes that the widget's child layers which are owned by a view are
// already in the correct z-order relative to each other and does no
// reordering if there are no views with an associated NativeView.
void ReorderNativeViews();
// Called by a View when the status of it's layer or one of the views
// descendants layer status changes.
void LayerTreeChanged();
const NativeWidget* native_widget() const;
NativeWidget* native_widget();
internal::NativeWidgetPrivate* native_widget_private() {
return native_widget_;
const internal::NativeWidgetPrivate* native_widget_private() const {
return native_widget_;
// Sets capture to the specified view. This makes it so that all mouse, touch
// and gesture events go to |view|. If |view| is NULL, the widget still
// obtains event capture, but the events will go to the view they'd normally
// go to.
void SetCapture(View* view);
// Releases capture.
void ReleaseCapture();
// Returns true if the widget has capture.
bool HasCapture();
void set_auto_release_capture(bool auto_release_capture) {
auto_release_capture_ = auto_release_capture;
// Returns the font used for tooltips.
TooltipManager* GetTooltipManager();
const TooltipManager* GetTooltipManager() const;
void set_focus_on_creation(bool focus_on_creation) {
focus_on_creation_ = focus_on_creation;
// True if the widget is considered top level widget. Top level widget
// POPUP or MENU, and has a focus manager and input method object associated
// with it. TYPE_CONTROL and TYPE_TOOLTIP is not considered top level.
bool is_top_level() const { return is_top_level_; }
// True when window movement via mouse interaction with the frame is disabled.
bool movement_disabled() const { return movement_disabled_; }
void set_movement_disabled(bool disabled) { movement_disabled_ = disabled; }
// Returns the work area bounds of the screen the Widget belongs to.
gfx::Rect GetWorkAreaBoundsInScreen() const;
// Creates and dispatches synthesized mouse move event using the current
// mouse location to refresh hovering status in the widget.
void SynthesizeMouseMoveEvent();
// Whether the widget supports translucency.
bool IsTranslucentWindowOpacitySupported() const;
// Returns the gesture recognizer which can handle touch/gesture events on
// this.
ui::GestureRecognizer* GetGestureRecognizer();
// Called when the delegate's CanResize or CanMaximize changes.
void OnSizeConstraintsChanged();
// Notification that our owner is closing.
// NOTE: this is not invoked for aura as it's currently not needed there.
// Under aura menus close by way of activation getting reset when the owner
// closes.
virtual void OnOwnerClosing();
// Returns the internal name for this Widget and NativeWidget.
std::string GetName() const;
// Overridden from NativeWidgetDelegate:
bool IsModal() const override;
bool IsDialogBox() const override;
bool CanActivate() const override;
bool IsNativeWidgetInitialized() const override;
bool IsAlwaysRenderAsActive() const override;
void SetAlwaysRenderAsActive(bool always_render_as_active) override;
bool OnNativeWidgetActivationChanged(bool active) override;
void OnNativeFocus() override;
void OnNativeBlur() override;
void OnNativeWidgetVisibilityChanging(bool visible) override;
void OnNativeWidgetVisibilityChanged(bool visible) override;
void OnNativeWidgetCreated(bool desktop_widget) override;
void OnNativeWidgetDestroying() override;
void OnNativeWidgetDestroyed() override;
gfx::Size GetMinimumSize() const override;
gfx::Size GetMaximumSize() const override;
void OnNativeWidgetMove() override;
void OnNativeWidgetSizeChanged(const gfx::Size& new_size) override;
void OnNativeWidgetWorkspaceChanged() override;
void OnNativeWidgetWindowShowStateChanged() override;
void OnNativeWidgetBeginUserBoundsChange() override;
void OnNativeWidgetEndUserBoundsChange() override;
bool HasFocusManager() const override;
void OnNativeWidgetPaint(const ui::PaintContext& context) override;
int GetNonClientComponent(const gfx::Point& point) override;
void OnKeyEvent(ui::KeyEvent* event) override;
void OnMouseEvent(ui::MouseEvent* event) override;
void OnMouseCaptureLost() override;
void OnScrollEvent(ui::ScrollEvent* event) override;
void OnGestureEvent(ui::GestureEvent* event) override;
bool ExecuteCommand(int command_id) override;
bool HasHitTestMask() const override;
void GetHitTestMask(gfx::Path* mask) const override;
Widget* AsWidget() override;
const Widget* AsWidget() const override;
bool SetInitialFocus(ui::WindowShowState show_state) override;
bool ShouldDescendIntoChildForEventHandling(
ui::Layer* root_layer,
gfx::NativeView child,
ui::Layer* child_layer,
const gfx::Point& location) override;
// Overridden from ui::EventSource:
ui::EventSink* GetEventSink() override;
// Overridden from FocusTraversable:
FocusSearch* GetFocusSearch() override;
FocusTraversable* GetFocusTraversableParent() override;
View* GetFocusTraversableParentView() override;
// Overridden from ui::NativeThemeObserver:
void OnNativeThemeUpdated(ui::NativeTheme* observed_theme) override;
// Creates the RootView to be used within this Widget. Subclasses may override
// to create custom RootViews that do specialized event processing.
// TODO(beng): Investigate whether or not this is needed.
virtual internal::RootView* CreateRootView();
// Provided to allow the NativeWidget implementations to destroy the RootView
// _before_ the focus manager/tooltip manager.
// TODO(beng): remove once we fold those objects onto this one.
void DestroyRootView();
// Notification that a drag will start. Default implementation does nothing.
virtual void OnDragWillStart();
// Notification that the drag performed by RunShellDrag() has completed.
virtual void OnDragComplete();
friend class ComboboxTest;
friend class ButtonTest;
friend class TextfieldTest;
friend class ViewAuraTest;
friend void DisableActivationChangeHandlingForTests();
// Persists the window's restored position and "show" state using the
// window delegate.
void SaveWindowPlacement();
// Invokes SaveWindowPlacement() if the native widget has been initialized.
// This is called at times when the native widget may not have been
// initialized.
void SaveWindowPlacementIfInitialized();
// Sizes and positions the window just after it is created.
void SetInitialBounds(const gfx::Rect& bounds);
// Sizes and positions the frameless window just after it is created.
void SetInitialBoundsForFramelessWindow(const gfx::Rect& bounds);
// Returns the bounds and "show" state from the delegate. Returns true if
// the delegate wants to use a specified bounds.
bool GetSavedWindowPlacement(gfx::Rect* bounds,
ui::WindowShowState* show_state);
// Returns the Views whose layers are parented directly to the Widget's
// layer.
const View::Views& GetViewsWithLayers();
static bool g_disable_activation_change_handling_;
internal::NativeWidgetPrivate* native_widget_;
base::ObserverList<WidgetObserver> observers_;
base::ObserverList<WidgetRemovalsObserver>::Unchecked removals_observers_;
// Non-owned pointer to the Widget's delegate. If a NULL delegate is supplied
// to Init() a default WidgetDelegate is created.
WidgetDelegate* widget_delegate_;
// The root of the View hierarchy attached to this window.
// WARNING: see warning in tooltip_manager_ for ordering dependencies with
// this and tooltip_manager_.
std::unique_ptr<internal::RootView> root_view_;
// The View that provides the non-client area of the window (title bar,
// window controls, sizing borders etc). To use an implementation other than
// the default, this class must be sub-classed and this value set to the
// desired implementation before calling |InitWindow()|.
NonClientView* non_client_view_;
// The focus manager keeping track of focus for this Widget and any of its
// children. NULL for non top-level widgets.
// WARNING: RootView's destructor calls into the FocusManager. As such, this
// must be destroyed AFTER root_view_. This is enforced in DestroyRootView().
std::unique_ptr<FocusManager> focus_manager_;
// A theme provider to use when no other theme provider is specified.
std::unique_ptr<ui::DefaultThemeProvider> default_theme_provider_;
// Valid for the lifetime of RunShellDrag(), indicates the view the drag
// started from.
View* dragged_view_;
// See class documentation for Widget above for a note about ownership.
InitParams::Ownership ownership_;
// See set_is_secondary_widget().
bool is_secondary_widget_;
// The current frame type in use by this window. Defaults to
FrameType frame_type_;
// True when the window should be rendered as active, regardless of whether
// or not it actually is.
bool always_render_as_active_;
// Set to true if the widget is in the process of closing.
bool widget_closed_;
// The saved "show" state for this window. See note in SetInitialBounds
// that explains why we save this.
ui::WindowShowState saved_show_state_;
// The restored bounds used for the initial show. This is only used if
// |saved_show_state_| is maximized.
gfx::Rect initial_restored_bounds_;
// Focus is automatically set to the view provided by the delegate
// when the widget is shown. Set this value to false to override
// initial focus for the widget.
bool focus_on_creation_;
// See |is_top_level()| accessor.
bool is_top_level_;
// Tracks whether native widget has been initialized.
bool native_widget_initialized_;
// Whether native widget has been destroyed.
bool native_widget_destroyed_;
// TODO(beng): Remove NativeWidgetGtk's dependence on these:
// If true, the mouse is currently down.
bool is_mouse_button_pressed_;
// True if capture losses should be ignored.
bool ignore_capture_loss_;
// TODO(beng): Remove NativeWidgetGtk's dependence on these:
// The following are used to detect duplicate mouse move events and not
// deliver them. Displaying a window may result in the system generating
// duplicate move events even though the mouse hasn't moved.
bool last_mouse_event_was_move_;
gfx::Point last_mouse_event_position_;
// True if event capture should be released on a mouse up event. Default is
// true.
bool auto_release_capture_;
// See description in GetViewsWithLayers().
View::Views views_with_layers_;
// Does |views_with_layers_| need updating?
bool views_with_layers_dirty_;
// True when window movement via mouse interaction with the frame should be
// disabled.
bool movement_disabled_;
ScopedObserver<ui::NativeTheme, ui::NativeThemeObserver> observer_manager_;
} // namespace views