Mozilla/mozilla/layout/xul/base/src/nsDocElementBoxFrame.cpp

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#include "nsHTMLParts.h"
#include "nsContainerFrame.h"
#include "nsCSSRendering.h"
#include "nsIDocument.h"
#include "nsPresContext.h"
#include "nsViewsCID.h"
#include "nsIView.h"
#include "nsIViewManager.h"
#include "nsIWidget.h"
#include "nsPageFrame.h"
#include "nsIRenderingContext.h"
#include "nsGUIEvent.h"
#include "nsIDOMEvent.h"
#include "nsStyleConsts.h"
#include "nsIViewManager.h"
#include "nsHTMLAtoms.h"
#include "nsXULAtoms.h"
#include "nsIEventStateManager.h"
#include "nsIDeviceContext.h"
#include "nsIScrollableView.h"
#include "nsLayoutAtoms.h"
#include "nsIPresShell.h"
#include "nsBoxFrame.h"
#include "nsStackLayout.h"
#include "nsIAnonymousContentCreator.h"
#include "nsINodeInfo.h"
#include "nsIServiceManager.h"
#include "nsISupportsArray.h"
#include "nsNodeInfoManager.h"
#include "nsContentCreatorFunctions.h"

// Interface IDs

//#define DEBUG_REFLOW

class nsDocElementBoxFrame : public nsBoxFrame, public nsIAnonymousContentCreator {
public:

  friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,
                                  nsStyleContext* aContext);

  nsDocElementBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext)
    :nsBoxFrame(aShell, aContext, PR_TRUE) {}

  NS_DECL_ISUPPORTS_INHERITED

  // nsIAnonymousContentCreator
  NS_IMETHOD CreateAnonymousContent(nsPresContext* aPresContext,
                                    nsISupportsArray& aAnonymousItems);
  NS_IMETHOD CreateFrameFor(nsPresContext*   aPresContext,
                            nsIContent *      aContent,
                            nsIFrame**        aFrame) { if (aFrame) *aFrame = nsnull; return NS_ERROR_FAILURE; }

  virtual PRBool IsFrameOfType(PRUint32 aFlags) const;
#ifdef DEBUG
  NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
};

//----------------------------------------------------------------------

nsIFrame*
NS_NewDocElementBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
  return new (aPresShell) nsDocElementBoxFrame (aPresShell, aContext);
}

NS_IMETHODIMP
nsDocElementBoxFrame::CreateAnonymousContent(nsPresContext* aPresContext,
                                       nsISupportsArray& aAnonymousItems)
{
  nsIDocument* doc = mContent->GetDocument();
  if (!doc)
    // The page is currently being torn down.  Why bother.
    return NS_ERROR_FAILURE;
  nsNodeInfoManager *nodeInfoManager = doc->NodeInfoManager();

  // create the top-secret popupgroup node. shhhhh!
  nsCOMPtr<nsINodeInfo> nodeInfo;
  nsresult rv = nodeInfoManager->GetNodeInfo(nsXULAtoms::popupgroup,
                                             nsnull, kNameSpaceID_XUL,
                                             getter_AddRefs(nodeInfo));
  NS_ENSURE_SUCCESS(rv, rv);

  nsCOMPtr<nsIContent> content;
  rv = NS_NewXULElement(getter_AddRefs(content), nodeInfo);
  NS_ENSURE_SUCCESS(rv, rv);

  aAnonymousItems.AppendElement(content);

  // create the top-secret default tooltip node. shhhhh!
  rv = nodeInfoManager->GetNodeInfo(nsXULAtoms::tooltip, nsnull,
                                    kNameSpaceID_XUL, getter_AddRefs(nodeInfo));
  NS_ENSURE_SUCCESS(rv, rv);

  rv = NS_NewXULElement(getter_AddRefs(content), nodeInfo);
  NS_ENSURE_SUCCESS(rv, rv);

  content->SetAttr(nsnull, nsXULAtoms::_default, NS_LITERAL_STRING("true"), PR_FALSE);
  aAnonymousItems.AppendElement(content);
  
  return NS_OK;
}

NS_IMETHODIMP_(nsrefcnt) 
nsDocElementBoxFrame::AddRef(void)
{
  return NS_OK;
}

NS_IMETHODIMP_(nsrefcnt)
nsDocElementBoxFrame::Release(void)
{
  return NS_OK;
}

NS_INTERFACE_MAP_BEGIN(nsDocElementBoxFrame)
  NS_INTERFACE_MAP_ENTRY(nsIAnonymousContentCreator)
NS_INTERFACE_MAP_END_INHERITING(nsBoxFrame)

PRBool
nsDocElementBoxFrame::IsFrameOfType(PRUint32 aFlags) const
{
  // Override nsBoxFrame.
  return !aFlags;
}

#ifdef DEBUG
NS_IMETHODIMP
nsDocElementBoxFrame::GetFrameName(nsAString& aResult) const
{
  return MakeFrameName(NS_LITERAL_STRING("DocElementBox"), aResult);
}
#endif