gecko-dev/layout/generic/nsObjectFrame.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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#ifndef nsObjectFrame_h___
#define nsObjectFrame_h___

#include "nsHTMLParts.h"
#include "nsHTMLContainerFrame.h"
#include "nsIPresContext.h"
#include "nsIPresShell.h"
#include "nsIPluginHost.h"
#include "nsplugin.h"
#include "nsIObjectFrame.h"

#ifdef ACCESSIBILITY
class nsIAccessible;
#endif

class nsPluginInstanceOwner;

#define nsObjectFrameSuper nsHTMLContainerFrame

class nsObjectFrame : public nsObjectFrameSuper, public nsIObjectFrame {
public:
  // nsISupports 
  NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);

  NS_IMETHOD SetInitialChildList(nsIPresContext* aPresContext,
                                 nsIAtom*        aListName,
                                 nsIFrame*       aChildList);
  NS_IMETHOD Init(nsIPresContext*  aPresContext,
                  nsIContent*      aContent,
                  nsIFrame*        aParent,
                  nsIStyleContext* aContext,
                  nsIFrame*        aPrevInFlow);
  NS_IMETHOD Reflow(nsIPresContext*          aPresContext,
                    nsHTMLReflowMetrics&     aDesiredSize,
                    const nsHTMLReflowState& aReflowState,
                    nsReflowStatus&          aStatus);
  NS_IMETHOD DidReflow(nsIPresContext*           aPresContext,
                       const nsHTMLReflowState*  aReflowState,
                       nsDidReflowStatus         aStatus);
  NS_IMETHOD Paint(nsIPresContext*      aPresContext,
                   nsIRenderingContext& aRenderingContext,
                   const nsRect&        aDirtyRect,
                   nsFramePaintLayer    aWhichLayer,
                   PRUint32             aFlags = 0);

  NS_IMETHOD  HandleEvent(nsIPresContext* aPresContext,
                          nsGUIEvent*     aEvent,
                          nsEventStatus*  aEventStatus);

  NS_IMETHOD Scrolled(nsIView *aView);
  NS_IMETHOD GetFrameType(nsIAtom** aType) const;
#ifdef DEBUG
  NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif

  NS_IMETHOD Destroy(nsIPresContext* aPresContext);

  NS_IMETHOD ContentChanged(nsIPresContext* aPresContext,
                            nsIContent*     aChild,
                            nsISupports*    aSubContent);
  NS_IMETHOD GetPluginInstance(nsIPluginInstance*& aPluginInstance);

  /* fail on any requests to get a cursor from us because plugins set their own! see bug 118877 */
  NS_IMETHOD GetCursor(nsIPresContext* aPresContext, nsPoint& aPoint, PRInt32& aCursor) 
  { return NS_ERROR_NOT_IMPLEMENTED;  };

  //i18n helper
  nsresult MakeAbsoluteURL(nsIURI* *aFullURI, 
                          nsString aSrc,
                          nsIURI* aBaseURI);
  // accessibility support
#ifdef ACCESSIBILITY
  NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
#ifdef XP_WIN
  NS_IMETHOD GetPluginPort(HWND *aPort);
#endif
#endif

  //local methods
  nsresult CreateWidget(nsIPresContext* aPresContext,
                        nscoord aWidth,
                        nscoord aHeight,
                        PRBool aViewOnly);
  nsresult GetFullURL(nsIURI*& aFullURL);
  
  PRBool IsSupportedImage(nsIContent* aContent);
  void IsSupportedDocument(nsIContent* aContent, PRBool* aDoc);

  // for a given aRoot, this walks the frame tree looking for the next outFrame
  nsresult GetNextObjectFrame(nsIPresContext* aPresContext,
                              nsIFrame* aRoot,
                              nsIObjectFrame** outFrame);

  void FixUpURLS(const nsString &name, nsString &value);

  nsIPresContext *mPresContext;  // weak ref
protected:
  // nsISupports
  NS_IMETHOD_(nsrefcnt) AddRef(void);
  NS_IMETHOD_(nsrefcnt) Release(void);

  virtual ~nsObjectFrame();

  virtual PRIntn GetSkipSides() const;

  virtual void GetDesiredSize(nsIPresContext* aPresContext,
                              const nsHTMLReflowState& aReflowState,
                              nsHTMLReflowMetrics& aDesiredSize);


  nsresult SetFullURL(nsIURI* aURL);

  nsresult InstantiateWidget(nsIPresContext*          aPresContext,
                             nsHTMLReflowMetrics&     aMetrics,
                             const nsHTMLReflowState& aReflowState,
                             nsCID aWidgetCID);

  nsresult InstantiatePlugin(nsIPresContext*          aPresContext,
                             nsHTMLReflowMetrics&     aMetrics,
                             const nsHTMLReflowState& aReflowState,
                             nsIPluginHost* aPluginHost, 
                             const char* aMimetype,
                             nsIURI* aURL);

  nsresult ReinstantiatePlugin(nsIPresContext* aPresContext, 
                               nsHTMLReflowMetrics& aMetrics, 
                               const nsHTMLReflowState& aReflowState);

  nsresult HandleChild(nsIPresContext*          aPresContext,
                       nsHTMLReflowMetrics&     aMetrics,
                       const nsHTMLReflowState& aReflowState,
                       nsReflowStatus&          aStatus,
                       nsIFrame*                child);
 
  nsresult GetBaseURL(nsIURI* &aURL);

  // check attributes and optionally CSS to see if we should display anything
  PRBool IsHidden(PRBool aCheckVisibilityStyle = PR_TRUE) const;

  nsresult NotifyContentObjectWrapper();

  nsresult GetWindowOriginInPixels(nsIPresContext * aPresContext, PRBool aWindoless, nsPoint* aOrigin);

private:
  nsPluginInstanceOwner *mInstanceOwner;
  nsIURI                *mFullURL;
  nsIFrame              *mFirstChild;
  nsIWidget             *mWidget;
  nsRect                mWindowlessRect;
};


#endif /* nsObjectFrame_h___ */