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added support for view observer.

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michaelp%netscape.com 1998-08-28 02:54:06 +00:00
parent b595789ff2
commit 1be78b877e
1 changed files with 99 additions and 5 deletions
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104
layout/base/src/nsPresShell.cpp
View File

@ -31,6 +31,7 @@
#include "prlog.h"
#include "nsVoidArray.h"
#include "nsIPref.h"
#include "nsIViewObserver.h"
#undef NOISY
@ -133,8 +134,12 @@ FrameHashTable::Remove(nsIFrame* aKey)
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIPresShellIID, NS_IPRESSHELL_IID);
static NS_DEFINE_IID(kIDocumentObserverIID, NS_IDOCUMENT_OBSERVER_IID);
static NS_DEFINE_IID(kIViewObserverIID, NS_IVIEWOBSERVER_IID);
class PresShell : public nsIPresShell, private nsIDocumentObserver {
class PresShell : public nsIPresShell, public nsIViewObserver,
private nsIDocumentObserver
{
public:
PresShell();
@ -193,12 +198,25 @@ public:
NS_IMETHOD ExitReflowLock();
virtual void BeginObservingDocument();
virtual void EndObservingDocument();
virtual void ResizeReflow(nscoord aWidth, nscoord aHeight);
NS_IMETHOD ResizeReflow(nscoord aWidth, nscoord aHeight);
virtual nsIFrame* GetRootFrame();
virtual nsIFrame* FindFrameWithContent(nsIContent* aContent);
virtual void AppendReflowCommand(nsIReflowCommand* aReflowCommand);
virtual void ProcessReflowCommands();
//nsIViewObserver
//nsIViewObserver interface
NS_IMETHOD Paint(nsIView *aView,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect);
NS_IMETHOD HandleEvent(nsIView* aView,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus);
NS_IMETHOD Scrolled(nsIView *aView);
NS_IMETHOD ResizeReflow(nsIView *aView, nscoord aWidth, nscoord aHeight);
protected:
~PresShell();
@ -295,6 +313,11 @@ PresShell::QueryInterface(const nsIID& aIID, void** aInstancePtr)
AddRef();
return NS_OK;
}
if (aIID.Equals(kIViewObserverIID)) {
*aInstancePtr = (void*) ((nsIViewObserver*) this);
AddRef();
return NS_OK;
}
if (aIID.Equals(kISupportsIID)) {
*aInstancePtr = (void*) ((nsISupports*) ((nsIPresShell*)this));
AddRef();
@ -311,7 +334,7 @@ PresShell::~PresShell()
NS_RELEASE(mDocument);
}
if (nsnull != mRootFrame) {
mRootFrame->DeleteFrame();
mRootFrame->DeleteFrame(*mPresContext);
}
NS_IF_RELEASE(mViewManager);
//Release mPresContext after mViewManager
@ -346,6 +369,9 @@ PresShell::Init(nsIDocument* aDocument,
mViewManager = aViewManager;
NS_ADDREF(mViewManager);
//doesn't add a ref since we own it... MMP
mViewManager->SetViewObserver((nsIViewObserver *)this);
// Bind the context to the presentation shell.
mPresContext = aPresContext;
NS_ADDREF(aPresContext);
@ -421,7 +447,7 @@ PresShell::EndObservingDocument()
}
}
void
NS_IMETHODIMP
PresShell::ResizeReflow(nscoord aWidth, nscoord aHeight)
{
EnterReflowLock();
@ -489,6 +515,8 @@ PresShell::ResizeReflow(nscoord aWidth, nscoord aHeight)
}
ExitReflowLock();
return NS_OK; //XXX this needs to be real. MMP
}
nsIFrame*
@ -785,6 +813,70 @@ PresShell::FindFrameWithContent(nsIContent* aContent)
return ::FindFrameWithContent(mRootFrame, aContent);
}
//nsIViewObserver
NS_IMETHODIMP PresShell :: Paint(nsIView *aView,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect)
{
nsIFrame *frame;
nsresult rv;
NS_ASSERTION(!(nsnull == aView), "null view");
frame = (nsIFrame *)aView->GetClientData();
if (nsnull != frame)
rv = frame->Paint(*mPresContext, aRenderingContext, aDirtyRect);
else
rv = NS_OK;
return rv;
}
NS_IMETHODIMP PresShell :: HandleEvent(nsIView *aView,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
nsIFrame *frame;
nsresult rv;
NS_ASSERTION(!(nsnull == aView), "null view");
frame = (nsIFrame *)aView->GetClientData();
if (nsnull != frame)
rv = frame->HandleEvent(*mPresContext, aEvent, aEventStatus);
else
rv = NS_OK;
return rv;
}
NS_IMETHODIMP PresShell :: Scrolled(nsIView *aView)
{
nsIFrame *frame;
nsresult rv;
NS_ASSERTION(!(nsnull == aView), "null view");
frame = (nsIFrame *)aView->GetClientData();
if (nsnull != frame)
{
rv = NS_OK;
}
else
rv = NS_OK;
return rv;
}
NS_IMETHODIMP PresShell :: ResizeReflow(nsIView *aView, nscoord aWidth, nscoord aHeight)
{
return ResizeReflow(aWidth, aHeight);
}
#ifdef NS_DEBUG
#include "nsViewsCID.h"
#include "nsWidgetsCID.h"
@ -996,10 +1088,12 @@ PresShell::VerifyIncrementalReflow()
// Create a new view manager.
rv = NSRepository::CreateInstance(kViewManagerCID, nsnull, kIViewManagerIID,
(void**) &vm);
if ((NS_OK != rv) || (NS_OK != vm->Init(cx))) {
if ((NS_OK != rv) || (NS_OK != vm->Init(dc))) {
NS_ASSERTION(NS_OK == rv, "failed to create view manager");
}
vm->SetViewObserver((nsIViewObserver *)this);
// Create a child window of the parent that is our "root view/window"
// Create a view
nsRect tbounds;