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pjs/docshell/base/nsDocShell.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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 the Mozilla browser.
*
* The Initial Developer of the Original Code is Netscape
* Communications, Inc. Portions created by Netscape are
* Copyright (C) 1999, Mozilla. All Rights Reserved.
*
* Contributor(s):
* Travis Bogard <travis@netscape.com>
*/
#ifndef nsDocShell_h__
#define nsDocShell_h__
#include "nsIPresShell.h"
#include "nsIDOMNode.h"
#include "nsIDOMNodeList.h"
#include "nsIViewManager.h"
#include "nsIScrollableView.h"
#include "nsIContentViewer.h"
#include "nsIPref.h"
#include "nsVoidArray.h"
#include "nsIScriptContext.h"
#include "nsITimer.h"
#include "nsCDocShell.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIContentViewerContainer.h"
#include "nsIDeviceContext.h"
#include "nsIDocumentLoader.h"
#include "nsIURILoader.h"
#include "nsIEditorDocShell.h"
#include "nsWeakReference.h"
// Local Includes
#include "nsDSURIContentListener.h"
#include "nsDocShellEditorData.h"
// Helper Classes
#include "nsCOMPtr.h"
#include "nsPoint.h" // mCurrent/mDefaultScrollbarPreferences
#include "nsString.h"
// Threshold value in ms for META refresh based redirects
#define REFRESH_REDIRECT_TIMER 15000
// Interfaces Needed
#include "nsIDocumentCharsetInfo.h"
#include "nsIDocCharset.h"
#include "nsIGlobalHistory.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIPrompt.h"
#include "nsIRefreshURI.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptGlobalObjectOwner.h"
#include "nsISHistory.h"
#include "nsILayoutHistoryState.h"
#include "nsIStringBundle.h"
#include "nsISupportsArray.h"
#include "nsIWebNavigation.h"
#include "nsIWebPageDescriptor.h"
#include "nsIWebProgressListener.h"
#include "nsISHContainer.h"
#include "nsIDocShellLoadInfo.h"
#include "nsIDocShellHistory.h"
#include "nsIURIFixup.h"
#include "nsIWebBrowserFind.h"
#include "nsIHttpChannel.h"
#include "nsDocShellTransferableHooks.h"
#define MAKE_LOAD_TYPE(type, flags) ((type) | ((flags) << 16))
/* load commands were moved to nsIDocShell.h */
/* load types are legal combinations of load commands and flags
*
* NOTE:
* Remember to update the IsValidLoadType function below if you change this
* enum to ensure bad flag combinations will be rejected.
*/
enum LoadType {
LOAD_NORMAL = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_NORMAL, nsIWebNavigation::LOAD_FLAGS_NONE),
LOAD_NORMAL_REPLACE = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_NORMAL, nsIWebNavigation::LOAD_FLAGS_REPLACE_HISTORY),
LOAD_HISTORY = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_HISTORY, nsIWebNavigation::LOAD_FLAGS_NONE),
LOAD_RELOAD_NORMAL = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_RELOAD, nsIWebNavigation::LOAD_FLAGS_NONE),
LOAD_RELOAD_BYPASS_CACHE = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_RELOAD, nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE),
LOAD_RELOAD_BYPASS_PROXY = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_RELOAD, nsIWebNavigation::LOAD_FLAGS_BYPASS_PROXY),
LOAD_RELOAD_BYPASS_PROXY_AND_CACHE = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_RELOAD, nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE | nsIWebNavigation::LOAD_FLAGS_BYPASS_PROXY),
LOAD_LINK = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_NORMAL, nsIWebNavigation::LOAD_FLAGS_IS_LINK),
LOAD_REFRESH = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_NORMAL, nsIWebNavigation::LOAD_FLAGS_IS_REFRESH),
LOAD_RELOAD_CHARSET_CHANGE = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_RELOAD, nsIWebNavigation::LOAD_FLAGS_CHARSET_CHANGE),
LOAD_BYPASS_HISTORY = MAKE_LOAD_TYPE(nsIDocShell::LOAD_CMD_NORMAL, nsIWebNavigation::LOAD_FLAGS_BYPASS_HISTORY)
// NOTE: Adding a new value? Remember to update IsValidLoadType!
};
static inline PRBool IsValidLoadType(PRUint32 aLoadType)
{
switch (aLoadType)
{
case LOAD_NORMAL:
case LOAD_NORMAL_REPLACE:
case LOAD_HISTORY:
case LOAD_RELOAD_NORMAL:
case LOAD_RELOAD_BYPASS_CACHE:
case LOAD_RELOAD_BYPASS_PROXY:
case LOAD_RELOAD_BYPASS_PROXY_AND_CACHE:
case LOAD_LINK:
case LOAD_REFRESH:
case LOAD_RELOAD_CHARSET_CHANGE:
case LOAD_BYPASS_HISTORY:
return PR_TRUE;
}
return PR_FALSE;
}
/* internally used ViewMode types */
enum ViewMode {
viewNormal = 0x0,
viewSource = 0x1
};
//*****************************************************************************
//*** nsRefreshTimer
//*****************************************************************************
class nsRefreshTimer : public nsITimerCallback
{
public:
nsRefreshTimer();
NS_DECL_ISUPPORTS
NS_DECL_NSITIMERCALLBACK
PRInt32 GetDelay() { return mDelay ;}
nsCOMPtr<nsIDocShell> mDocShell;
nsCOMPtr<nsIURI> mURI;
PRBool mRepeat;
PRInt32 mDelay;
PRBool mMetaRefresh;
protected:
virtual ~nsRefreshTimer();
};
//*****************************************************************************
//*** nsDocShell
//*****************************************************************************
class nsDocShell : public nsIDocShell,
public nsIDocShellTreeItem,
public nsIDocShellTreeNode,
public nsIDocShellHistory,
public nsIWebNavigation,
public nsIBaseWindow,
public nsIScrollable,
public nsITextScroll,
public nsIDocCharset,
public nsIContentViewerContainer,
public nsIInterfaceRequestor,
public nsIScriptGlobalObjectOwner,
public nsIRefreshURI,
public nsIWebProgressListener,
public nsIEditorDocShell,
public nsIWebPageDescriptor,
public nsSupportsWeakReference
{
friend class nsDSURIContentListener;
public:
// Object Management
nsDocShell();
NS_DECL_ISUPPORTS
NS_DECL_NSIDOCSHELL
NS_DECL_NSIDOCSHELLTREEITEM
NS_DECL_NSIDOCSHELLTREENODE
NS_DECL_NSIDOCSHELLHISTORY
NS_DECL_NSIWEBNAVIGATION
NS_DECL_NSIBASEWINDOW
NS_DECL_NSISCROLLABLE
NS_DECL_NSITEXTSCROLL
NS_DECL_NSIDOCCHARSET
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_NSISCRIPTGLOBALOBJECTOWNER
NS_DECL_NSIWEBPROGRESSLISTENER
NS_DECL_NSIREFRESHURI
NS_DECL_NSICONTENTVIEWERCONTAINER
NS_DECL_NSIEDITORDOCSHELL
NS_DECL_NSIWEBPAGEDESCRIPTOR
nsresult SetLoadCookie(nsISupports * aCookie);
nsresult GetLoadCookie(nsISupports ** aResult);
nsDocShellInfoLoadType ConvertLoadTypeToDocShellLoadInfo(PRUint32 aLoadType);
PRUint32 ConvertDocShellLoadInfoToLoadType(nsDocShellInfoLoadType aDocShellLoadType);
protected:
// Object Management
virtual ~nsDocShell();
NS_IMETHOD DestroyChildren();
// Content Viewer Management
NS_IMETHOD EnsureContentViewer();
NS_IMETHOD EnsureDeviceContext();
NS_IMETHOD CreateAboutBlankContentViewer();
NS_IMETHOD CreateContentViewer(const char * aContentType,
nsIRequest * request, nsIStreamListener ** aContentHandler);
NS_IMETHOD NewContentViewerObj(const char * aContentType,
nsIRequest * request, nsILoadGroup * aLoadGroup,
nsIStreamListener ** aContentHandler, nsIContentViewer ** aViewer);
NS_IMETHOD SetupNewViewer(nsIContentViewer * aNewViewer);
NS_IMETHOD GetEldestPresContext(nsIPresContext** aPresContext);
NS_IMETHOD GetCurrentDocumentOwner(nsISupports ** aOwner);
virtual nsresult DoURILoad(nsIURI * aURI,
nsIURI * aReferrer,
nsISupports * aOwner,
const char * aTypeHint,
nsIInputStream * aPostData,
nsIInputStream * aHeadersData,
PRBool firstParty,
nsIDocShell ** aDocShell,
nsIRequest ** aRequest);
NS_IMETHOD AddHeadersToChannel(nsIInputStream * aHeadersData,
nsIChannel * aChannel);
virtual nsresult DoChannelLoad(nsIChannel * aChannel,
nsIURILoader * aURILoader);
NS_IMETHOD ScrollIfAnchor(nsIURI * aURI, PRBool * aWasAnchor, PRUint32 aLoadType, nscoord *cx, nscoord *cy);
NS_IMETHOD OnLoadingSite(nsIChannel * aChannel);
NS_IMETHOD OnNewURI(nsIURI * aURI, nsIChannel * aChannel, PRUint32 aLoadType);
virtual void SetReferrerURI(nsIURI * aURI);
// Session History
virtual PRBool ShouldAddToSessionHistory(nsIURI * aURI);
virtual nsresult AddToSessionHistory(nsIURI * aURI, nsIChannel * aChannel,
nsISHEntry ** aNewEntry);
NS_IMETHOD LoadHistoryEntry(nsISHEntry * aEntry, PRUint32 aLoadType);
NS_IMETHOD PersistLayoutHistoryState();
NS_IMETHOD CloneAndReplace(nsISHEntry * srcEntry, PRUint32 aCloneID,
nsISHEntry * areplaceEntry, nsISHEntry ** destEntry);
nsresult GetRootSessionHistory(nsISHistory ** aReturn);
nsresult GetHttpChannel(nsIChannel * aChannel, nsIHttpChannel ** aReturn);
PRBool ShouldDiscardLayoutState(nsIHttpChannel * aChannel);
// Global History
nsresult ShouldAddToGlobalHistory(nsIURI * aURI, PRBool * aShouldAdd);
nsresult AddToGlobalHistory(nsIURI * aURI, PRBool );
// Helper Routines
NS_IMETHOD GetPromptAndStringBundle(nsIPrompt ** aPrompt,
nsIStringBundle ** aStringBundle);
NS_IMETHOD GetChildOffset(nsIDOMNode * aChild, nsIDOMNode * aParent,
PRInt32 * aOffset);
NS_IMETHOD GetRootScrollableView(nsIScrollableView ** aOutScrollView);
NS_IMETHOD EnsureContentListener();
NS_IMETHOD EnsureScriptEnvironment();
NS_IMETHOD EnsureEditorData();
nsresult EnsureTransferableHookData();
NS_IMETHOD EnsureFind();
NS_IMETHOD RefreshURIFromQueue();
NS_IMETHOD DisplayLoadError(nsresult aError, nsIURI *aURI, const PRUnichar *aURL);
NS_IMETHOD LoadErrorPage(nsIURI *aURI, const PRUnichar *aURL, const PRUnichar *aPage, const PRUnichar *aDescription);
PRBool IsPrintingOrPP(PRBool aDisplayErrorDialog = PR_TRUE);
nsresult SetBaseUrlForWyciwyg(nsIContentViewer * aContentViewer);
static inline PRUint32
PRTimeToSeconds(PRTime t_usec)
{
PRTime usec_per_sec;
PRUint32 t_sec;
LL_I2L(usec_per_sec, PR_USEC_PER_SEC);
LL_DIV(t_usec, t_usec, usec_per_sec);
LL_L2I(t_sec, t_usec);
return t_sec;
}
virtual nsresult FindTarget(const PRUnichar *aTargetName,
PRBool *aIsNewWindow,
nsIDocShell **aResult);
PRBool IsFrame();
//
// Helper method that is called when a new document (including any
// sub-documents - ie. frames) has been completely loaded.
//
virtual nsresult EndPageLoad(nsIWebProgress * aProgress,
nsIChannel * aChannel,
nsresult aResult);
protected:
nsString mName;
nsString mTitle;
nsVoidArray mChildren;
nsCOMPtr<nsISupportsArray> mRefreshURIList;
nsDSURIContentListener * mContentListener;
nsRect mBounds; // Dimensions of the docshell
nsCOMPtr<nsIContentViewer> mContentViewer;
nsCOMPtr<nsIDocumentCharsetInfo> mDocumentCharsetInfo;
nsCOMPtr<nsIDeviceContext> mDeviceContext;
nsCOMPtr<nsIDocumentLoader>mDocLoader;
nsCOMPtr<nsIWidget> mParentWidget;
nsCOMPtr<nsIPref> mPrefs;
nsCOMPtr<nsIURI> mCurrentURI;
nsCOMPtr<nsIURI> mReferrerURI;
nsCOMPtr<nsIScriptGlobalObject> mScriptGlobal;
nsCOMPtr<nsIScriptContext> mScriptContext;
nsCOMPtr<nsISHistory> mSessionHistory;
nsCOMPtr<nsIGlobalHistory> mGlobalHistory;
nsCOMPtr<nsISupports> mLoadCookie; // the load cookie associated with the window context.
nsCOMPtr<nsIURIFixup> mURIFixup;
nsCOMPtr<nsIWebBrowserFind> mFind;
PRInt32 mMarginWidth;
PRInt32 mMarginHeight;
PRInt32 mItemType;
nsPoint mCurrentScrollbarPref; // this document only
nsPoint mDefaultScrollbarPref; // persistent across doc loads
PRUint32 mLoadType;
PRBool mAllowSubframes;
PRPackedBool mAllowPlugins;
PRPackedBool mAllowJavascript;
PRPackedBool mAllowMetaRedirects;
PRPackedBool mAllowImages;
PRPackedBool mFocusDocFirst;
PRPackedBool mHasFocus;
PRPackedBool mCreatingDocument; // (should be) debugging only
PRPackedBool mUseErrorPages;
PRPackedBool mAllowAuth;
PRUint32 mAppType;
PRInt32 mChildOffset; // Offset in the parent's child list.
PRUint32 mBusyFlags;
// Reference to the SHEntry for this docshell until the page is destroyed.
// Somebody give me better name
nsCOMPtr<nsISHEntry> mOSHE;
// Reference to the SHEntry for this docshell until the page is loaded
// Somebody give me better name
nsCOMPtr<nsISHEntry> mLSHE;
PRBool mFiredUnloadEvent;
// this flag is for bug #21358. a docshell may load many urls
// which don't result in new documents being created (i.e. a new content viewer)
// we want to make sure we don't call a on load event more than once for a given
// content viewer.
PRBool mEODForCurrentDocument;
PRBool mURIResultedInDocument;
// used to keep track of whether user click links should be handle by us
// or immediately kicked out to an external application. mscott: eventually
// i'm going to try to fold this up into the uriloader where it belongs but i haven't
// figured out how to do that yet.
PRBool mUseExternalProtocolHandler;
// Disallow popping up new windows with target=
PRBool mDisallowPopupWindows;
// Validate window targets to prevent frameset spoofing
PRBool mValidateOrigin;
PRBool mIsBeingDestroyed;
PRPackedBool mIsExecutingOnLoadHandler;
// Editor stuff
nsDocShellEditorData* mEditorData; // editor data, if any
// Transferable hooks/callbacks
nsCOMPtr<nsIClipboardDragDropHookList> mTransferableHookData;
// WEAK REFERENCES BELOW HERE.
// Note these are intentionally not addrefd. Doing so will create a cycle.
// For that reasons don't use nsCOMPtr.
nsIDocShellTreeItem * mParent; // Weak Reference
nsIDocShellTreeOwner * mTreeOwner; // Weak Reference
nsIChromeEventHandler * mChromeEventHandler; //Weak Reference
// Indicates that a DocShell in this "docshell tree" is printing
PRBool mIsPrintingOrPP;
public:
class InterfaceRequestorProxy : public nsIInterfaceRequestor {
public:
InterfaceRequestorProxy(nsIInterfaceRequestor* p);
virtual ~InterfaceRequestorProxy();
NS_DECL_ISUPPORTS
NS_DECL_NSIINTERFACEREQUESTOR
protected:
InterfaceRequestorProxy() {}
nsWeakPtr mWeakPtr;
};
};
#endif /* nsDocShell_h__ */
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