зеркало из https://github.com/mozilla/gecko-dev.git
292 строки
11 KiB
C++
292 строки
11 KiB
C++
/* -*- 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 "nsCOMPtr.h"
|
|
#include "pldhash.h"
|
|
#include "prclist.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 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);
|
|
|
|
PRBool IsBusy();
|
|
|
|
void Destroy();
|
|
virtual void DestroyChildren();
|
|
|
|
nsIDocumentLoader* ChildAt(PRInt32 i) {
|
|
return static_cast<nsDocLoader*>(mChildList[i]);
|
|
}
|
|
|
|
nsIDocumentLoader* SafeChildAt(PRInt32 i) {
|
|
return 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);
|
|
|
|
PRBool RefreshAttempted(nsIWebProgress* aWebProgress,
|
|
nsIURI *aURI,
|
|
PRInt32 aDelay,
|
|
PRBool aSameURI);
|
|
|
|
// 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);
|
|
|
|
// Inform a parent docloader that aChild is about to call its onload
|
|
// handler.
|
|
PRBool ChildEnteringOnload(nsIDocumentLoader* aChild) {
|
|
// It's ok if we're already in the list -- we'll just be in there twice
|
|
// and then the RemoveObject calls from ChildDoneWithOnload will remove
|
|
// us.
|
|
return mChildrenInOnload.AppendObject(aChild);
|
|
}
|
|
|
|
// Inform a parent docloader that aChild is done calling its onload
|
|
// handler.
|
|
void ChildDoneWithOnload(nsIDocumentLoader* aChild) {
|
|
mChildrenInOnload.RemoveObject(aChild);
|
|
DocLoaderIsEmpty(PR_TRUE);
|
|
}
|
|
|
|
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;
|
|
|
|
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;
|
|
|
|
PRInt64 mCurrentSelfProgress;
|
|
PRInt64 mMaxSelfProgress;
|
|
|
|
PRInt64 mCurrentTotalProgress;
|
|
PRInt64 mMaxTotalProgress;
|
|
|
|
PLDHashTable mRequestInfoHash;
|
|
PRInt64 mCompletedTotalProgress;
|
|
|
|
PRCList mStatusInfoList;
|
|
|
|
/*
|
|
* This flag indicates that the loader is loading a document. It is set
|
|
* from the call to LoadDocument(...) until the OnConnectionsComplete(...)
|
|
* notification is fired...
|
|
*/
|
|
PRPackedBool mIsLoadingDocument;
|
|
|
|
/* Flag to indicate that we're in the process of restoring a document. */
|
|
PRPackedBool mIsRestoringDocument;
|
|
|
|
/* Flag to indicate that we're in the process of flushing layout
|
|
under DocLoaderIsEmpty() and should not do another flush. */
|
|
PRPackedBool mDontFlushLayout;
|
|
|
|
/* Flag to indicate whether we should consider ourselves as currently
|
|
flushing layout for the purposes of IsBusy. For example, if Stop has
|
|
been called then IsBusy should return false even if we are still
|
|
flushing. */
|
|
PRPackedBool mIsFlushingLayout;
|
|
|
|
private:
|
|
// A list of kids that are in the middle of their onload calls and will let
|
|
// us know once they're done. We don't want to fire onload for "normal"
|
|
// DocLoaderIsEmpty calls (those coming from requests finishing in our
|
|
// loadgroup) unless this is empty.
|
|
nsCOMArray<nsIDocumentLoader> mChildrenInOnload;
|
|
|
|
// 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. This method _does_ make sure that layout is flushed if our
|
|
// loadgroup has no active requests before checking for "real" emptiness if
|
|
// aFlushLayout is true.
|
|
void DocLoaderIsEmpty(PRBool aFlushLayout);
|
|
|
|
nsListenerInfo *GetListenerInfo(nsIWebProgressListener* aListener);
|
|
|
|
PRInt64 GetMaxTotalProgress();
|
|
|
|
nsresult AddRequestInfo(nsIRequest* aRequest);
|
|
void RemoveRequestInfo(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__ */
|