gecko-dev/uriloader/base/nsDocLoader.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
*/
#ifndef nsDocLoader_h__
#define nsDocLoader_h__
#include "nsIDocumentLoader.h"
#include "nsIWebProgress.h"
#include "nsIWebProgressListener.h"
#include "nsIRequestObserver.h"
#include "nsWeakReference.h"
#include "nsILoadGroup.h"
#include "nsCOMArray.h"
#include "nsVoidArray.h"
#include "nsString.h"
#include "nsIChannel.h"
#include "nsIProgressEventSink.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIChannelEventSink.h"
#include "nsISecurityEventSink.h"
#include "nsISupportsPriority.h"
#include "nsInt64.h"
#include "nsCOMPtr.h"
#include "pldhash.h"
struct nsRequestInfo;
struct nsListenerInfo;
/****************************************************************************
* nsDocLoader implementation...
****************************************************************************/
#define NS_THIS_DOCLOADER_IMPL_CID \
{ /* b4ec8387-98aa-4c08-93b6-6d23069c06f2 */ \
0xb4ec8387, \
0x98aa, \
0x4c08, \
{0x93, 0xb6, 0x6d, 0x23, 0x06, 0x9c, 0x06, 0xf2} \
}
class nsDocLoader : public nsIDocumentLoader,
public nsIRequestObserver,
public nsSupportsWeakReference,
public nsIProgressEventSink,
public nsIWebProgress,
public nsIInterfaceRequestor,
public nsIChannelEventSink,
public nsISecurityEventSink,
public nsISupportsPriority
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_THIS_DOCLOADER_IMPL_CID)
nsDocLoader();
virtual nsresult Init();
static already_AddRefed<nsDocLoader> GetAsDocLoader(nsISupports* aSupports);
// Needed to deal with ambiguous inheritance from nsISupports...
static nsISupports* GetAsSupports(nsDocLoader* aDocLoader) {
return NS_STATIC_CAST(nsIDocumentLoader*, aDocLoader);
}
// Add aDocLoader as a child to the docloader service.
static nsresult AddDocLoaderAsChildOfRoot(nsDocLoader* aDocLoader);
NS_DECL_ISUPPORTS
NS_DECL_NSIDOCUMENTLOADER
// nsIProgressEventSink
NS_DECL_NSIPROGRESSEVENTSINK
NS_DECL_NSISECURITYEVENTSINK
// nsIRequestObserver methods: (for observing the load group)
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_NSIWEBPROGRESS
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_NSICHANNELEVENTSINK
NS_DECL_NSISUPPORTSPRIORITY
// Implementation specific methods...
// Remove aChild from our childlist. This nulls out the child's mParent
// pointer.
nsresult RemoveChildLoader(nsDocLoader *aChild);
// Add aChild to our child list. This will set aChild's mParent pointer to
// |this|.
nsresult AddChildLoader(nsDocLoader* aChild);
nsDocLoader* GetParent() const { return mParent; }
protected:
virtual ~nsDocLoader();
virtual nsresult SetDocLoaderParent(nsDocLoader * aLoader);
// DocLoaderIsEmpty should be called whenever the docloader may be empty.
// This method is idempotent and does nothing if the docloader is not in
// fact empty.
void DocLoaderIsEmpty();
PRBool IsBusy();
void Destroy();
virtual void DestroyChildren();
nsIDocumentLoader* ChildAt(PRInt32 i) {
return NS_STATIC_CAST(nsDocLoader*, mChildList[i]);
}
nsIDocumentLoader* SafeChildAt(PRInt32 i) {
return NS_STATIC_CAST(nsDocLoader*, mChildList.SafeElementAt(i));
}
void FireOnProgressChange(nsDocLoader* aLoadInitiator,
nsIRequest *request,
PRInt64 aProgress,
PRInt64 aProgressMax,
PRInt64 aProgressDelta,
PRInt64 aTotalProgress,
PRInt64 aMaxTotalProgress);
void FireOnStateChange(nsIWebProgress *aProgress,
nsIRequest* request,
PRInt32 aStateFlags,
nsresult aStatus);
void FireOnStatusChange(nsIWebProgress *aWebProgress,
nsIRequest *aRequest,
nsresult aStatus,
const PRUnichar* aMessage);
void FireOnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI *aUri);
// this function is overridden by the docshell, it is provided so that we
// can pass more information about redirect state (the normal OnStateChange
// doesn't get the new channel).
// @param aRedirectFlags The flags being sent to OnStateChange that
// indicate the type of redirect.
// @param aStateFlags The channel flags normally sent to OnStateChange.
virtual void OnRedirectStateChange(nsIChannel* aOldChannel,
nsIChannel* aNewChannel,
PRUint32 aRedirectFlags,
PRUint32 aStateFlags) {}
void doStartDocumentLoad();
void doStartURLLoad(nsIRequest *request);
void doStopURLLoad(nsIRequest *request, nsresult aStatus);
void doStopDocumentLoad(nsIRequest *request, nsresult aStatus);
protected:
// IMPORTANT: The ownership implicit in the following member
// variables has been explicitly checked and set using nsCOMPtr
// for owning pointers and raw COM interface pointers for weak
// (ie, non owning) references. If you add any members to this
// class, please make the ownership explicit (pinkerton, scc).
nsCOMPtr<nsIRequest> mDocumentRequest; // [OWNER] ???compare with document
nsDocLoader* mParent; // [WEAK]
nsVoidArray mListenerInfoList;
/*
* This flag indicates that the loader is loading a document. It is set
* from the call to LoadDocument(...) until the OnConnectionsComplete(...)
* notification is fired...
*/
PRBool mIsLoadingDocument;
nsCOMPtr<nsILoadGroup> mLoadGroup;
// We hold weak refs to all our kids
nsVoidArray mChildList;
// The following member variables are related to the new nsIWebProgress
// feedback interfaces that travis cooked up.
PRInt32 mProgressStateFlags;
nsInt64 mCurrentSelfProgress;
nsInt64 mMaxSelfProgress;
nsInt64 mCurrentTotalProgress;
nsInt64 mMaxTotalProgress;
PLDHashTable mRequestInfoHash;
/* Flag to indicate that we're in the process of restoring a document. */
PRBool mIsRestoringDocument;
private:
nsListenerInfo *GetListenerInfo(nsIWebProgressListener* aListener);
PRInt64 GetMaxTotalProgress();
nsresult AddRequestInfo(nsIRequest* aRequest);
nsRequestInfo *GetRequestInfo(nsIRequest* aRequest);
void ClearRequestInfoHash();
PRInt64 CalculateMaxProgress();
/// void DumpChannelInfo(void);
// used to clear our internal progress state between loads...
void ClearInternalProgress();
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsDocLoader, NS_THIS_DOCLOADER_IMPL_CID)
#endif /* nsDocLoader_h__ */