Add m-esr52 at 52.6.0

1 files changed, 165 insertions, 0 deletions

diff --git a/widget/nsIWidgetListener.h b/widget/nsIWidgetListener.h
new file mode 100644
index 000000000..63d899be0
--- /dev/null
+++ b/widget/nsIWidgetListener.h
@@ -0,0 +1,165 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsIWidgetListener_h__
+#define nsIWidgetListener_h__
+
+#include <stdint.h>
+
+#include "mozilla/EventForwards.h"
+#include "mozilla/TimeStamp.h"
+
+#include "nsRegionFwd.h"
+#include "Units.h"
+
+class nsView;
+class nsIPresShell;
+class nsIWidget;
+class nsIXULWindow;
+
+/**
+ * sizemode is an adjunct to widget size
+ */
+enum nsSizeMode
+{
+  nsSizeMode_Normal = 0,
+  nsSizeMode_Minimized,
+  nsSizeMode_Maximized,
+  nsSizeMode_Fullscreen,
+  nsSizeMode_Invalid
+};
+
+/**
+ * different types of (top-level) window z-level positioning
+ */
+enum nsWindowZ
+{
+  nsWindowZTop = 0,   // on top
+  nsWindowZBottom,    // on bottom
+  nsWindowZRelative   // just below some specified widget
+};
+
+class nsIWidgetListener
+{
+public:
+
+  /**
+   * If this listener is for an nsIXULWindow, return it. If this is null, then
+   * this is likely a listener for a view, which can be determined using
+   * GetView. If both methods return null, this will be an nsWebBrowser.
+   */
+  virtual nsIXULWindow* GetXULWindow();
+
+  /**
+   * If this listener is for an nsView, return it.
+   */
+  virtual nsView* GetView();
+
+  /**
+   * Return the presshell for this widget listener.
+   */
+  virtual nsIPresShell* GetPresShell();
+
+  /**
+   * Called when a window is moved to location (x, y). Returns true if the
+   * notification was handled. Coordinates are outer window screen coordinates.
+   */
+  virtual bool WindowMoved(nsIWidget* aWidget, int32_t aX, int32_t aY);
+
+  /**
+   * Called when a window is resized to (width, height). Returns true if the
+   * notification was handled. Coordinates are outer window screen coordinates.
+   */
+  virtual bool WindowResized(nsIWidget* aWidget,
+                             int32_t aWidth, int32_t aHeight);
+
+  /**
+   * Called when the size mode (minimized, maximized, fullscreen) is changed.
+   */
+  virtual void SizeModeChanged(nsSizeMode aSizeMode);
+
+  /**
+   * Called when the DPI (device resolution scaling factor) is changed,
+   * such that UI elements may need to be rescaled.
+   */
+  virtual void UIResolutionChanged();
+
+  /**
+   * Called when the z-order of the window is changed. Returns true if the
+   * notification was handled. aPlacement indicates the new z order. If
+   * placement is nsWindowZRelative, then aRequestBelow should be the
+   * window to place below. On return, aActualBelow will be set to the
+   * window actually behind. This generally only applies to Windows.
+   */
+  virtual bool ZLevelChanged(bool aImmediate, nsWindowZ* aPlacement,
+                             nsIWidget* aRequestBelow,
+                             nsIWidget** aActualBelow);
+
+  /**
+   * Called when the window entered or left the fullscreen state.
+   */
+  virtual void FullscreenChanged(bool aInFullscreen);
+
+  /**
+   * Called when the window is activated and focused.
+   */
+  virtual void WindowActivated();
+
+  /**
+   * Called when the window is deactivated and no longer focused.
+   */
+  virtual void WindowDeactivated();
+
+  /**
+   * Called when the show/hide toolbar button on the Mac titlebar is pressed.
+   */
+  virtual void OSToolbarButtonPressed();
+
+  /**
+   * Called when a request is made to close the window. Returns true if the
+   * notification was handled. Returns true if the notification was handled.
+   */
+  virtual bool RequestWindowClose(nsIWidget* aWidget);
+
+  /*
+   * Indicate that a paint is about to occur on this window. This is called
+   * at a time when it's OK to change the geometry of this widget or of
+   * other widgets. Must be called before every call to PaintWindow.
+   */
+  virtual void WillPaintWindow(nsIWidget* aWidget);
+
+  /**
+   * Paint the specified region of the window. Returns true if the
+   * notification was handled.
+   * This is called at a time when it is not OK to change the geometry of
+   * this widget or of other widgets.
+   */
+  virtual bool PaintWindow(nsIWidget* aWidget,
+                           mozilla::LayoutDeviceIntRegion aRegion);
+
+  /**
+   * Indicates that a paint occurred.
+   * This is called at a time when it is OK to change the geometry of
+   * this widget or of other widgets.
+   * Must be called after every call to PaintWindow.
+   */
+  virtual void DidPaintWindow();
+
+  virtual void DidCompositeWindow(uint64_t aTransactionId,
+                                  const mozilla::TimeStamp& aCompositeStart,
+                                  const mozilla::TimeStamp& aCompositeEnd);
+
+  /**
+   * Request that layout schedules a repaint on the next refresh driver tick.
+   */
+  virtual void RequestRepaint();
+
+  /**
+   * Handle an event.
+   */
+  virtual nsEventStatus HandleEvent(mozilla::WidgetGUIEvent* aEvent,
+                                    bool aUseAttachedEvents);
+};
+
+#endif