Added CaptureMouse method to nsIWidget. Implemented CaptureMouse in nsWindow.cpp

Added a base implementation to nsBaseWidget.cpp.

widget/public/nsIWidget.h

@@ -653,6 +653,13 @@ class nsIWidget : public nsISupports {
     NS_IMETHOD EnableFileDrop(PRBool aEnable) = 0;
    
     virtual void  ConvertToDeviceCoordinates(nscoord	&aX,nscoord	&aY) = 0;
+
+    /**
+     * Enables/Disables system mouse capture.
+     * @param aCapture PR_TRUE enables mouse capture, PR_FALSE disables mouse capture 
+     *
+     */
+    NS_IMETHOD CaptureMouse(PRBool aCapture) = 0;
 };
 
 #endif // nsIWidget_h__

widget/src/windows/nsWindow.cpp

@@ -155,6 +155,17 @@ nsWindow::~nsWindow()
 }
 
 
+NS_METHOD nsWindow::CaptureMouse(PRBool aCapture)
+{
+  if (PR_TRUE == aCapture) { 
+    SetCapture(mWnd);
+  } else {
+    ReleaseCapture();
+  }
+  return NS_OK;
+}
+
+
 //-------------------------------------------------------------------------
 //
 // Default for height modification is to do nothing

widget/src/windows/nsWindow.h

@@ -86,7 +86,7 @@ public:
     NS_IMETHOD              IsVisible(PRBool & aState);
     HWND                    mBorderlessParent;
 
-
+    NS_IMETHOD              CaptureMouse(PRBool aCapture);
     NS_IMETHOD              Move(PRUint32 aX, PRUint32 aY);
     NS_IMETHOD              Resize(PRUint32 aWidth,
                                    PRUint32 aHeight,

widget/src/xpwidgets/nsBaseWidget.cpp

@@ -217,6 +217,11 @@ void nsBaseWidget::BaseCreate(nsIWidget *aParent,
     }
 }
 
+NS_IMETHODIMP nsBaseWidget::CaptureMouse(PRBool aCapture)
+{
+  return NS_OK;
+}
+
 //-------------------------------------------------------------------------
 //
 // Accessor functions to get/set the client data

widget/src/xpwidgets/nsBaseWidget.h

@@ -55,6 +55,7 @@ public:
     NS_IMETHOD              PreCreateWidget(nsWidgetInitData *aWidgetInitData) { return NS_OK;}
 
       // nsIWidget interface
+    NS_IMETHOD              CaptureMouse(PRBool aCapture);
     NS_IMETHOD              GetClientData(void*& aClientData);
     NS_IMETHOD              SetClientData(void* aClientData);
     NS_IMETHOD              Destroy();