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Changed the nsIDocShell parent attribute to not create a cycle. Added notes about this. Framed out start of usage for the uriloader. Added code for the new nsDSURIContentListener object to be the callback object for nsIURIContentListener passed to uriloader.

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tbogard@aol.net
1999-11-06 04:51:05 +00:00
parent 0ba6d1c806
commit 52fbf5e4d5
5 changed files with 306 additions and 28 deletions
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107
docshell/base/nsDocShellBase.cpp
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@@ -1,4 +1,4 @@
/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
@@ -20,10 +20,12 @@
* Travis Bogard <travis@netscape.com>
*/
#include "nsIComponentManager.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIDocumentViewer.h"
#include "nsIDeviceContext.h"
#include "nsCURILoader.h"
#include "nsDocShellBase.h"
@@ -31,7 +33,7 @@
//*** nsDocShellBase: Object Management
//*****************************************************************************
nsDocShellBase::nsDocShellBase() : mCreated(PR_FALSE)
nsDocShellBase::nsDocShellBase() : mCreated(PR_FALSE), mContentListener(nsnull)
{
NS_INIT_REFCNT();
mBaseInitInfo = new nsDocShellInitInfo();
@@ -44,6 +46,12 @@ nsDocShellBase::~nsDocShellBase()
delete mBaseInitInfo;
mBaseInitInfo = nsnull;
}
if(mContentListener)
{
mContentListener->Release();
mContentListener = nsnull;
}
}
//*****************************************************************************
@@ -65,21 +73,27 @@ NS_IMETHODIMP nsDocShellBase::LoadURI(const PRUnichar* uri,
return LoadURIVia(uri, presContext, 0);
}
NS_IMETHODIMP nsDocShellBase::LoadURIVia(const PRUnichar* uri,
nsIPresContext* presContext, PRUint32 adapterBinding)
NS_IMETHODIMP nsDocShellBase::LoadURIVia(const PRUnichar* aUri,
nsIPresContext* aPresContext, PRUint32 aAdapterBinding)
{
NS_ENSURE_ARG(uri);
//XXX First Check
/*
Loads a given URI through the specified adapter. This will give priority
to loading the requested URI in the object implementing this interface.
If it can't be loaded here however, the URL dispatcher will go through its
normal process of content loading.
NS_ENSURE_ARG(aUri);
@param uri - The URI to load.
@param adapterBinding - The local IP address of the adapter to bind to.
*/
return NS_ERROR_FAILURE;
nsCOMPtr<nsIURILoader> uriLoader;
NS_ENSURE_SUCCESS(nsComponentManager::CreateInstance(NS_URI_LOADER_PROGID,
nsnull, NS_GET_IID(nsIURILoader), getter_AddRefs(uriLoader)),
NS_ERROR_FAILURE);
nsCOMPtr<nsIURI> uri;
NS_ENSURE_SUCCESS(NewURI(aUri, getter_AddRefs(uri)), NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(EnsureContentListener(), NS_ERROR_FAILURE);
/*
Call uriloader passing mContentListener as the nsIURIContentListener
uriLoader->OpenURI(uri, nsnull, nsnull,
*/
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsDocShellBase::GetDocument(nsIDOMDocument** aDocument)
@@ -104,20 +118,18 @@ NS_IMETHODIMP nsDocShellBase::GetDocument(nsIDOMDocument** aDocument)
NS_IMETHODIMP nsDocShellBase::SetDocument(nsIDOMDocument* aDocument,
nsIPresContext* presContext)
{
NS_WARN_IF_FALSE(PR_FALSE, "Subclasses should override this method!!!!");
return NS_ERROR_NOT_IMPLEMENTED;
NS_WARN_IF_FALSE(PR_FALSE, "Subclasses should override this method!!!!");
return NS_ERROR_NOT_IMPLEMENTED;
}
// caller is responsible for calling nsString::Recycle(*aName);
NS_IMETHODIMP nsDocShellBase::GetName(PRUnichar** aName)
{
NS_ENSURE_ARG_POINTER(aName);
*aName = nsnull;
if (0!=mName.Length())
{
*aName = mName.ToNewUnicode();
}
return NS_OK;
NS_ENSURE_ARG_POINTER(aName);
*aName = nsnull;
if(0 != mName.Length())
*aName = mName.ToNewUnicode();
return NS_OK;
}
NS_IMETHODIMP nsDocShellBase::SetName(const PRUnichar* aName)
@@ -162,10 +174,34 @@ NS_IMETHODIMP nsDocShellBase::GetParent(nsIDocShell** parent)
NS_IMETHODIMP nsDocShellBase::SetParent(nsIDocShell* aParent)
{
// null aParent is ok
mParent = aParent; // this assignment does an addref
/*
Note this doesn't do an addref on purpose. This is because the parent
is an implied lifetime. We don't want to create a cycle by refcounting
the parent.
*/
mParent = aParent;
return NS_OK;
}
NS_IMETHODIMP nsDocShellBase::GetParentURIContentListener(nsIURIContentListener**
aParent)
{
NS_ENSURE_ARG_POINTER(aParent);
NS_ENSURE_SUCCESS(EnsureContentListener(), NS_ERROR_FAILURE);
mContentListener->GetParentContentListener(aParent);
return NS_OK;
}
NS_IMETHODIMP nsDocShellBase::SetParentURIContentListener(nsIURIContentListener*
aParent)
{
NS_ENSURE_SUCCESS(EnsureContentListener(), NS_ERROR_FAILURE);
mContentListener->SetParentContentListener(aParent);
return NS_OK;
}
NS_IMETHODIMP nsDocShellBase::CanHandleContentType(const PRUnichar* contentType,
PRBool* canHandle)
{
@@ -1079,3 +1115,24 @@ nsresult nsDocShellBase::GetPresShell(nsIPresShell** aPresShell)
return NS_OK;
}
nsresult nsDocShellBase::NewURI(const PRUnichar* aUri, nsIURI** aURI)
{
//XXX Get new URI
return NS_ERROR_FAILURE;
}
nsresult nsDocShellBase::EnsureContentListener()
{
if(mContentListener)
return NS_OK;
mContentListener = new nsDSURIContentListener();
NS_ENSURE_TRUE(mContentListener, NS_ERROR_OUT_OF_MEMORY);
mContentListener->AddRef();
mContentListener->DocShellBase(this);
return NS_OK;
}