/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * ***** 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) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Steve Clark * Dan Rosen * * 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 ***** * * This Original Code has been modified by IBM Corporation. * Modifications made by IBM described herein are * Copyright (c) International Business Machines * Corporation, 2000 * * Modifications to Mozilla code or documentation * identified per MPL Section 3.3 * * Date Modified by Description of modification * 05/03/2000 IBM Corp. Observer related defines for reflow */ #ifndef nsIPresShell_h___ #define nsIPresShell_h___ #include "nsISupports.h" #include "nsCoord.h" #include "nsRect.h" #include "nsColor.h" #include "nsEvent.h" #include "nsReflowType.h" #include "nsCompatibility.h" #include "nsCOMArray.h" #include "nsFrameManagerBase.h" #include "mozFlushType.h" #include "nsWeakReference.h" #include // for FILE definition class nsIAtom; class nsIContent; class nsIContentIterator; class nsIDocument; class nsIDocumentObserver; class nsIFrame; class nsPresContext; class nsStyleSet; class nsIViewManager; class nsIDeviceContext; class nsIRenderingContext; class nsIPageSequenceFrame; class nsString; class nsAString; class nsStringArray; class nsICaret; class nsStyleContext; class nsIFrameSelection; class nsFrameManager; class nsILayoutHistoryState; class nsIReflowCallback; class nsISupportsArray; class nsIDOMNode; class nsIStyleFrameConstruction; class nsIStyleSheet; class nsCSSFrameConstructor; class nsISelection; #define NS_IPRESSHELL_IID \ { 0x775a6c25, 0x326f, 0x4a99, \ { 0xbb, 0x9d, 0x65, 0xdf, 0x15, 0xb3, 0x06, 0xa3 } } // Constants uses for ScrollFrameIntoView() function #define NS_PRESSHELL_SCROLL_TOP 0 #define NS_PRESSHELL_SCROLL_BOTTOM 100 #define NS_PRESSHELL_SCROLL_LEFT 0 #define NS_PRESSHELL_SCROLL_RIGHT 100 #define NS_PRESSHELL_SCROLL_CENTER 50 #define NS_PRESSHELL_SCROLL_ANYWHERE -1 #define NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE -2 // debug VerifyReflow flags #define VERIFY_REFLOW_ON 0x01 #define VERIFY_REFLOW_NOISY 0x02 #define VERIFY_REFLOW_ALL 0x04 #define VERIFY_REFLOW_DUMP_COMMANDS 0x08 #define VERIFY_REFLOW_NOISY_RC 0x10 #define VERIFY_REFLOW_REALLY_NOISY_RC 0x20 #define VERIFY_REFLOW_INCLUDE_SPACE_MANAGER 0x40 #define VERIFY_REFLOW_DURING_RESIZE_REFLOW 0x80 #ifdef IBMBIDI // Constant for Set/Get CaretBidiLevel #define BIDI_LEVEL_UNDEFINED 0x80 #endif // for PostAttributeChanged enum nsAttributeChangeType { eChangeType_Set = 0, // Set attribute eChangeType_Remove = 1 // Remove attribute }; /** * Presentation shell interface. Presentation shells are the * controlling point for managing the presentation of a document. The * presentation shell holds a live reference to the document, the * presentation context, the style manager, the style set and the root * frame.

* * When this object is Release'd, it will release the document, the * presentation context, the style manager, the style set and the root * frame. */ // hack to make egcs / gcc 2.95.2 happy class nsIPresShell_base : public nsISupports { public: NS_DECLARE_STATIC_IID_ACCESSOR(NS_IPRESSHELL_IID) }; NS_DEFINE_STATIC_IID_ACCESSOR(nsIPresShell_base, NS_IPRESSHELL_IID) class nsIPresShell : public nsIPresShell_base { public: NS_IMETHOD Init(nsIDocument* aDocument, nsPresContext* aPresContext, nsIViewManager* aViewManager, nsStyleSet* aStyleSet, nsCompatibility aCompatMode) = 0; /** * All callers are responsible for calling |Destroy| after calling * |EndObservingDocument|. It needs to be separate only because form * controls incorrectly store their data in the frames rather than the * content model and printing calls |EndObservingDocument| multiple * times to make form controls behave nicely when printed. */ NS_IMETHOD Destroy() = 0; // All frames owned by the shell are allocated from an arena. They are also recycled // using free lists (separate free lists being maintained for each size_t). // Methods for recycling frames. virtual void* AllocateFrame(size_t aSize) = 0; virtual void FreeFrame(size_t aSize, void* aFreeChunk) = 0; // Dynamic stack memory allocation NS_IMETHOD PushStackMemory() = 0; NS_IMETHOD PopStackMemory() = 0; NS_IMETHOD AllocateStackMemory(size_t aSize, void** aResult) = 0; nsIDocument* GetDocument() { return mDocument; } nsPresContext* GetPresContext() { return mPresContext; } nsIViewManager* GetViewManager() { return mViewManager; } #ifdef _IMPL_NS_LAYOUT nsStyleSet* StyleSet() { return mStyleSet; } nsCSSFrameConstructor* FrameConstructor() { return mFrameConstructor; } nsFrameManager* FrameManager() const { return NS_REINTERPRET_CAST(nsFrameManager*, &NS_CONST_CAST(nsIPresShell*, this)->mFrameManager); } #endif // These two methods are used only by viewer NS_IMETHOD GetActiveAlternateStyleSheet(nsString& aSheetTitle) = 0; NS_IMETHOD SelectAlternateStyleSheet(const nsString& aSheetTitle) = 0; /* Enable/disable author style level. Disabling author style disables the entire * author level of the cascade, including the HTML preshint level. */ // XXX these could easily be inlined, but there is a circular #include // problem with nsStyleSet. NS_HIDDEN_(void) SetAuthorStyleDisabled(PRBool aDisabled); NS_HIDDEN_(PRBool) GetAuthorStyleDisabled(); /* * Called when stylesheets are added/removed/enabled/disabled to rebuild * all style data for a given pres shell without necessarily reconstructing * all of the frames. This will not reconstruct style synchronously; if * you need to do that, call FlushPendingNotifications to flush out style * reresolves. * // XXXbz why do we have this on the interface anyway? The only consumer * is calling AddOverrideStyleSheet/RemoveOverrideStyleSheet, and I think * those should just handle reconstructing style data... */ virtual NS_HIDDEN_(void) ReconstructStyleDataExternal(); NS_HIDDEN_(void) ReconstructStyleDataInternal(); #ifdef _IMPL_NS_LAYOUT void ReconstructStyleData() { ReconstructStyleDataInternal(); } #else void ReconstructStyleData() { ReconstructStyleDataExternal(); } #endif /** Setup all style rules required to implement preferences * - used for background/text/link colors and link underlining * may be extended for any prefs that are implemented via style rules * - aForceReflow argument is used to force a full reframe to make the rules show * (only used when the current page needs to reflect changed pref rules) * * - initially created for bugs 31816, 20760, 22963 */ NS_IMETHOD SetPreferenceStyleRules(PRBool aForceReflow) = 0; /** * Gather titles of all selectable (alternate and preferred) style sheets * fills void array with nsString* caller must free strings */ NS_IMETHOD ListAlternateStyleSheets(nsStringArray& aTitleList) = 0; /** * FrameSelection will return the Frame based selection API. * You cannot go back and forth anymore with QI between nsIDOM sel and * nsIFrame sel. */ nsIFrameSelection* FrameSelection() { return mSelection; } // Make shell be a document observer NS_IMETHOD BeginObservingDocument() = 0; // Make shell stop being a document observer NS_IMETHOD EndObservingDocument() = 0; /** * Determine if InitialReflow() was previously called. * @param aDidInitialReflow PR_TRUE if InitalReflow() was previously called, * PR_FALSE otherwise. */ NS_IMETHOD GetDidInitialReflow(PRBool *aDidInitialReflow) = 0; /** * Perform the initial reflow. Constructs the frame for the root content * object and then reflows the frame model into the specified width and * height. * * The coordinates for aWidth and aHeight must be in standard nscoord's. */ NS_IMETHOD InitialReflow(nscoord aWidth, nscoord aHeight) = 0; /** * Reflow the frame model into a new width and height. The * coordinates for aWidth and aHeight must be in standard nscoord's. */ NS_IMETHOD ResizeReflow(nscoord aWidth, nscoord aHeight) = 0; /** * Reflow the frame model with a reflow reason of eReflowReason_StyleChange */ NS_IMETHOD StyleChangeReflow() = 0; /** * This calls through to the frame manager to get the root frame. * Callers inside of gklayout should use FrameManager()->GetRootFrame() * instead, as it's more efficient. */ virtual NS_HIDDEN_(nsIFrame*) GetRootFrame() const; /** * Returns the page sequence frame associated with the frame hierarchy. * Returns NULL if not a paginated view. */ NS_IMETHOD GetPageSequenceFrame(nsIPageSequenceFrame** aResult) const = 0; /** * Gets the primary frame associated with the content object. This is a * helper function that just forwards the request to the frame manager. * * The primary frame is the frame that is most closely associated with the * content. A frame is more closely associated with the content that another * frame if the one frame contains directly or indirectly the other frame (e.g., * when a frame is scrolled there is a scroll frame that contains the frame * being scrolled). The primary frame is always the first-in-flow. * * In the case of absolutely positioned elements and floated elements, * the primary frame is the frame that is out of the flow and not the * placeholder frame. */ virtual NS_HIDDEN_(nsIFrame*) GetPrimaryFrameFor(nsIContent* aContent) const = 0; /** * Returns a layout object associated with the primary frame for the content object. * * @param aContent the content object for which we seek a layout object * @param aResult the resulting layout object as an nsISupports, if found. Refcounted. */ NS_IMETHOD GetLayoutObjectFor(nsIContent* aContent, nsISupports** aResult) const = 0; /** * Gets the placeholder frame associated with the specified frame. This is * a helper frame that forwards the request to the frame manager. */ NS_IMETHOD GetPlaceholderFrameFor(nsIFrame* aFrame, nsIFrame** aPlaceholderFrame) const = 0; /** * Reflow commands */ NS_IMETHOD AppendReflowCommand(nsIFrame* aTargetFrame, nsReflowType aReflowType, nsIAtom* aChildListName) = 0; // XXXbz don't we need a child list name on this too? NS_IMETHOD CancelReflowCommand(nsIFrame* aTargetFrame, nsReflowType* aCmdType) = 0; NS_IMETHOD CancelAllReflowCommands() = 0; /** * Recreates the frames for a node */ NS_IMETHOD RecreateFramesFor(nsIContent* aContent) = 0; /** * Determine if it is safe to flush all pending notifications * @param aIsSafeToFlush PR_TRUE if it is safe, PR_FALSE otherwise. * */ NS_IMETHOD IsSafeToFlush(PRBool& aIsSafeToFlush) = 0; /** * Flush pending notifications of the type specified. This method * will not affect the content model; it'll just affect style and * frames. Callers that actually want up-to-date presentation (other * than the document itself) should probably be calling * nsIDocument::FlushPendingNotifications. * * @param aType the type of notifications to flush */ NS_IMETHOD FlushPendingNotifications(mozFlushType aType) = 0; /** * Post a request to handle a DOM event after Reflow has finished. */ NS_IMETHOD PostDOMEvent(nsIContent* aContent, nsEvent* aEvent)=0; /** * Post a request to set and attribute after reflow has finished. */ NS_IMETHOD PostAttributeChange(nsIContent* aContent, PRInt32 aNameSpaceID, nsIAtom* aName, const nsString& aValue, PRBool aNotify, nsAttributeChangeType aType) = 0; NS_IMETHOD PostReflowCallback(nsIReflowCallback* aCallback) = 0; NS_IMETHOD CancelReflowCallback(nsIReflowCallback* aCallback) = 0; /** * Reflow batching */ NS_IMETHOD BeginReflowBatching() = 0; NS_IMETHOD EndReflowBatching(PRBool aFlushPendingReflows) = 0; NS_IMETHOD GetReflowBatchingStatus(PRBool* aIsBatching) = 0; NS_IMETHOD ClearFrameRefs(nsIFrame* aFrame) = 0; /** * Given a frame, create a rendering context suitable for use with * the frame. */ NS_IMETHOD CreateRenderingContext(nsIFrame *aFrame, nsIRenderingContext** aContext) = 0; /** * Informs the pres shell that the document is now at the anchor with * the given name. If |aScroll| is true, scrolls the view of the * document so that the anchor with the specified name is displayed at * the top of the window. If |aAnchorName| is empty, then this informs * the pres shell that there is no current target, and |aScroll| must * be false. */ NS_IMETHOD GoToAnchor(const nsAString& aAnchorName, PRBool aScroll) = 0; /** * Scrolls the view of the document so that the frame is displayed at the * top of the window. * * @param aFrame The frame to scroll into view * @param aVPercent How to align the frame vertically. A value of 0 * (NS_PRESSHELL_SCROLL_TOP) means the frame's upper edge is * aligned with the top edge of the visible area. A value of * 100 (NS_PRESSHELL_SCROLL_BOTTOM) means the frame's bottom * edge is aligned with the bottom edge of the visible area. * For values in between, the point "aVPercent" down the frame * is placed at the point "aVPercent" down the visible area. A * value of 50 (NS_PRESSHELL_SCROLL_CENTER) centers the frame * vertically. A value of NS_PRESSHELL_SCROLL_ANYWHERE means move * the frame the minimum amount necessary in order for the entire * frame to be visible vertically (if possible) * @param aHPercent How to align the frame horizontally. A value of 0 * (NS_PRESSHELL_SCROLL_LEFT) means the frame's left edge is * aligned with the left edge of the visible area. A value of * 100 (NS_PRESSHELL_SCROLL_RIGHT) means the frame's right * edge is aligned with the right edge of the visible area. * For values in between, the point "aVPercent" across the frame * is placed at the point "aVPercent" across the visible area. * A value of 50 (NS_PRESSHELL_SCROLL_CENTER) centers the frame * horizontally . A value of NS_PRESSHELL_SCROLL_ANYWHERE means move * the frame the minimum amount necessary in order for the entire * frame to be visible horizontally (if possible) */ NS_IMETHOD ScrollFrameIntoView(nsIFrame *aFrame, PRIntn aVPercent, PRIntn aHPercent) const = 0; /** * Suppress notification of the frame manager that frames are * being destroyed. */ NS_IMETHOD SetIgnoreFrameDestruction(PRBool aIgnore) = 0; /** * Notification sent by a frame informing the pres shell that it is about to * be destroyed. * This allows any outstanding references to the frame to be cleaned up */ NS_IMETHOD NotifyDestroyingFrame(nsIFrame* aFrame) = 0; /** * Notify the Clipboard that we have something to copy. */ NS_IMETHOD DoCopy() = 0; /** * Get the selection of the focussed element (either the page selection, * or the selection for a text field). */ NS_IMETHOD GetSelectionForCopy(nsISelection** outSelection) = 0; /** * Get link location. */ NS_IMETHOD GetLinkLocation(nsIDOMNode* aNode, nsAString& aLocation) = 0; /** * Get the doc or the selection as text or html. */ NS_IMETHOD DoGetContents(const nsACString& aMimeType, PRUint32 aFlags, PRBool aSelectionOnly, nsAString& outValue) = 0; /** * Get the caret, if it exists. AddRefs it. */ NS_IMETHOD GetCaret(nsICaret **aOutCaret) = 0; /** * Should the images have borders etc. Actual visual effects are determined * by the frames. Visual effects may not effect layout, only display. * Takes effect on next repaint, does not force a repaint itself. * * @param aEnabled if PR_TRUE, visual selection effects are enabled * if PR_FALSE visual selection effects are disabled * @return always NS_OK */ NS_IMETHOD SetSelectionFlags(PRInt16 aInEnable) = 0; /** * Gets the current state of non text selection effects * @param aEnabled [OUT] set to the current state of non text selection, * as set by SetDisplayNonTextSelection * @return if aOutEnabled==null, returns NS_ERROR_INVALID_ARG * else NS_OK */ NS_IMETHOD GetSelectionFlags(PRInt16 *aOutEnabled) = 0; /** * Interface to dispatch events via the presshell */ NS_IMETHOD HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame, nsIContent* aContent, PRUint32 aFlags, nsEventStatus* aStatus) = 0; /** * Dispatch event to content only (NOT full processing) */ NS_IMETHOD HandleDOMEventWithTarget(nsIContent* aTargetContent, nsEvent* aEvent, nsEventStatus* aStatus) = 0; /** * Gets the current target event frame from the PresShell */ NS_IMETHOD GetEventTargetFrame(nsIFrame** aFrame) = 0; /** * Gets the current target event frame from the PresShell */ NS_IMETHOD GetEventTargetContent(nsEvent* aEvent, nsIContent** aContent) = 0; /** * Get and set the history state for the current document */ NS_IMETHOD CaptureHistoryState(nsILayoutHistoryState** aLayoutHistoryState, PRBool aLeavingPage = PR_FALSE) = 0; /** * Determine if reflow is currently locked * @param aIsReflowLocked returns PR_TRUE if reflow is locked, PR_FALSE otherwise */ NS_IMETHOD IsReflowLocked(PRBool* aIsLocked) = 0; /** * Returns a content iterator to iterate the generated content nodes. * You must specify whether you want to iterate the "before" generated * content or the "after" generated content. If there is no generated * content of the specified type for the promary frame associated with * with the content object then NULL is returned */ enum GeneratedContentType {Before, After}; NS_IMETHOD GetGeneratedContentIterator(nsIContent* aContent, GeneratedContentType aType, nsIContentIterator** aIterator) const = 0; /** * Store the nsIAnonymousContentCreator-generated anonymous * content that's associated with an element. The new anonymous content * is added to whatever anonymous content might already be associated with * the element. * @param aContent the element with which the anonymous * content is to be associated with * @param aAnonymousElements an array of nsIContent * objects, or null to indicate that any anonymous * content should be dissociated from the aContent */ NS_IMETHOD SetAnonymousContentFor(nsIContent* aContent, nsISupportsArray* aAnonymousElements) = 0; /** * Retrieve the nsIAnonymousContentCreator-generated anonymous * content that's associated with an element. * @param aContent the element for which to retrieve the * associated anonymous content * @param aAnonymousElements an array of nsIContent objects, * or null to indicate that there are no anonymous elements * associated with aContent */ NS_IMETHOD GetAnonymousContentFor(nsIContent* aContent, nsISupportsArray** aAnonymousElements) = 0; /** * Release all nsIAnonymousContentCreator-generated * anonymous content associated with the shell. */ NS_IMETHOD ReleaseAnonymousContent() = 0; /** * Called to find out if painting is suppressed for this presshell. If it is suppressd, * we don't allow the painting of any layer but the background, and we don't * recur into our children. */ NS_IMETHOD IsPaintingSuppressed(PRBool* aResult)=0; /** * Unsuppress painting. */ NS_IMETHOD UnsuppressPainting() = 0; /** * Called to disable nsITheme support in a specific presshell. */ NS_IMETHOD DisableThemeSupport() = 0; /** * Indicates whether theme support is enabled. */ virtual PRBool IsThemeSupportEnabled() = 0; /** * Get the set of agent style sheets for this presentation */ virtual nsresult GetAgentStyleSheets(nsCOMArray& aSheets) = 0; /** * Replace the set of agent style sheets */ virtual nsresult SetAgentStyleSheets(const nsCOMArray& aSheets) = 0; /** * Add an override style sheet for this presentation */ virtual nsresult AddOverrideStyleSheet(nsIStyleSheet *aSheet) = 0; /** * Remove an override style sheet */ virtual nsresult RemoveOverrideStyleSheet(nsIStyleSheet *aSheet) = 0; /** * Reconstruct frames for all elements in the document */ virtual nsresult ReconstructFrames() = 0; /** * See if reflow verification is enabled. To enable reflow verification add * "verifyreflow:1" to your NSPR_LOG_MODULES environment variable * (any non-zero debug level will work). Or, call SetVerifyReflowEnable * with PR_TRUE. */ static PRBool GetVerifyReflowEnable(); /** * Set the verify-reflow enable flag. */ static void SetVerifyReflowEnable(PRBool aEnabled); /** * Get the flags associated with the VerifyReflow debug tool */ static PRInt32 GetVerifyReflowFlags(); #ifdef MOZ_REFLOW_PERF NS_IMETHOD DumpReflows() = 0; NS_IMETHOD CountReflows(const char * aName, PRUint32 aType, nsIFrame * aFrame) = 0; NS_IMETHOD PaintCount(const char * aName, nsIRenderingContext* aRenderingContext, nsPresContext * aPresContext, nsIFrame * aFrame, PRUint32 aColor) = 0; NS_IMETHOD SetPaintFrameCount(PRBool aOn) = 0; #endif #ifdef IBMBIDI /** * SetCaretBidiLevel will set the Bidi embedding level for the cursor. 0-63 */ NS_IMETHOD SetCaretBidiLevel(PRUint8 aLevel) = 0; /** * GetCaretBidiLevel will get the Bidi embedding level for the cursor. 0-63 */ NS_IMETHOD GetCaretBidiLevel(PRUint8 *aOutLevel) = 0; /** * UndefineCaretBidiLevel will set the Bidi embedding level for the cursor to an out-of-range value */ NS_IMETHOD UndefineCaretBidiLevel(void) = 0; /** * Reconstruct and reflow frame model */ NS_IMETHOD BidiStyleChangeReflow(void) = 0; #endif #ifdef DEBUG // Debugging hooks virtual void ListStyleContexts(nsIFrame *aRootFrame, FILE *out, PRInt32 aIndent = 0) = 0; virtual void ListStyleSheets(FILE *out, PRInt32 aIndent = 0) = 0; virtual void VerifyStyleTree() = 0; #endif PRBool IsAccessibilityActive() { return mIsAccessibilityActive; } /** * Stop all active elements (plugins and the caret) in this presentation and * in the presentations of subdocuments. Resets painting to a suppressed state. * XXX this should include image animations */ virtual void Freeze() = 0; /** * Restarts active elements (plugins) in this presentation and in the * presentations of subdocuments, then do a full invalidate of the content area. */ virtual void Thaw() = 0; /** * When this shell is disconnected from its containing docshell, we * lose our container pointer. However, we'd still like to be able to target * user events at the docshell's parent. This pointer allows us to do that. * It should not be used for any other purpose. */ void SetForwardingContainer(nsWeakPtr aContainer) { mForwardingContainer = aContainer; } /** * Dump window contents into a new offscreen rendering context. * @param aRect is the region to capture into the offscreen buffer, in the * root frame's coordinate system (if aIgnoreViewportScrolling is false) * or in the root scrolled frame's coordinate system * (if aIgnoreViewportScrolling is true) * @param aUntrusted set to PR_TRUE if the contents may be passed to malicious * agents. E.g. we might choose not to paint the contents of sensitive widgets * such as the file name in a file upload widget, and we might choose not * to paint themes. * @param aIgnoreViewportScrolling ignore clipping/scrolling/scrollbar painting * due to scrolling in the viewport * @param aBackgroundColor a background color to render onto * @param aRenderedContext gets set to a rendering context whose offscreen * buffer can be locked to get the data. The buffer's size will be aRect's size. * In all cases the caller must clean it up by calling * cx->DestroyDrawingSurface(cx->GetDrawingSurface()). */ NS_IMETHOD RenderOffscreen(nsRect aRect, PRBool aUntrusted, PRBool aIgnoreViewportScrolling, nscolor aBackgroundColor, nsIRenderingContext** aRenderedContext) = 0; protected: // IMPORTANT: The ownership implicit in the following member variables // has been explicitly checked. If you add any members to this class, // please make the ownership explicit (pinkerton, scc). // these are the same Document and PresContext owned by the DocViewer. // we must share ownership. nsIDocument* mDocument; // [STRONG] nsPresContext* mPresContext; // [STRONG] nsStyleSet* mStyleSet; // [OWNS] nsCSSFrameConstructor* mFrameConstructor; // [OWNS] nsIViewManager* mViewManager; // [WEAK] docViewer owns it so I don't have to nsIFrameSelection* mSelection; nsFrameManagerBase mFrameManager; // [OWNS] nsWeakPtr mForwardingContainer; PRPackedBool mStylesHaveChanged; PRPackedBool mDidInitialReflow; PRPackedBool mIsDestroying; #ifdef ACCESSIBILITY /** * Call this when there have been significant changes in the rendering for * a content subtree, so the matching accessibility subtree can be invalidated */ void InvalidateAccessibleSubtree(nsIContent *aContent); #endif // Set to true when the accessibility service is being used to mirror // the dom/layout trees PRPackedBool mIsAccessibilityActive; }; /** * Create a new empty presentation shell. Upon success, call Init * before attempting to use the shell. */ nsresult NS_NewPresShell(nsIPresShell** aInstancePtrResult); #endif /* nsIPresShell_h___ */