/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape 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/NPL/ * * 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 Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): */ #ifndef nsStyleSet_h___ #define nsStyleSet_h___ #include #include "nsISupports.h" #include "nslayout.h" class nsIAtom; class nsIStyleRule; class nsIStyleSheet; class nsIStyleContext; class nsIPresContext; class nsIContent; class nsIFrame; class nsIDocument; class nsIFrameManager; // IID for the nsIStyleSet interface {e59396b0-b244-11d1-8031-006008159b5a} #define NS_ISTYLE_SET_IID \ {0xe59396b0, 0xb244, 0x11d1, {0x80, 0x31, 0x00, 0x60, 0x08, 0x15, 0x9b, 0x5a}} class nsIStyleSet : public nsISupports { public: static const nsIID& GetIID() { static nsIID iid = NS_ISTYLE_SET_IID; return iid; } // Style sheets are ordered, most significant first // NOTE: this is the reverse of the way documents store the sheets virtual void AppendOverrideStyleSheet(nsIStyleSheet* aSheet) = 0; virtual void InsertOverrideStyleSheetAfter(nsIStyleSheet* aSheet, nsIStyleSheet* aAfterSheet) = 0; virtual void InsertOverrideStyleSheetBefore(nsIStyleSheet* aSheet, nsIStyleSheet* aBeforeSheet) = 0; virtual void RemoveOverrideStyleSheet(nsIStyleSheet* aSheet) = 0; virtual PRInt32 GetNumberOfOverrideStyleSheets() = 0; virtual nsIStyleSheet* GetOverrideStyleSheetAt(PRInt32 aIndex) = 0; // the ordering of document style sheets is given by the document virtual void AddDocStyleSheet(nsIStyleSheet* aSheet, nsIDocument* aDocument) = 0; virtual void RemoveDocStyleSheet(nsIStyleSheet* aSheet) = 0; virtual PRInt32 GetNumberOfDocStyleSheets() = 0; virtual nsIStyleSheet* GetDocStyleSheetAt(PRInt32 aIndex) = 0; virtual void AppendBackstopStyleSheet(nsIStyleSheet* aSheet) = 0; virtual void InsertBackstopStyleSheetAfter(nsIStyleSheet* aSheet, nsIStyleSheet* aAfterSheet) = 0; virtual void InsertBackstopStyleSheetBefore(nsIStyleSheet* aSheet, nsIStyleSheet* aBeforeSheet) = 0; virtual void RemoveBackstopStyleSheet(nsIStyleSheet* aSheet) = 0; virtual PRInt32 GetNumberOfBackstopStyleSheets() = 0; virtual nsIStyleSheet* GetBackstopStyleSheetAt(PRInt32 aIndex) = 0; // get a style context for a non-pseudo frame virtual nsIStyleContext* ResolveStyleFor(nsIPresContext* aPresContext, nsIContent* aContent, nsIStyleContext* aParentContext, PRBool aForceUnique = PR_FALSE) = 0; // get a style context for a pseudo-frame (ie: tag = NS_NewAtom(":first-line"); virtual nsIStyleContext* ResolvePseudoStyleFor(nsIPresContext* aPresContext, nsIContent* aParentContent, nsIAtom* aPseudoTag, nsIStyleContext* aParentContext, PRBool aForceUnique = PR_FALSE) = 0; // This funtions just like ResolvePseudoStyleFor except that it will // return nsnull if there are no explicit style rules for that // pseudo element virtual nsIStyleContext* ProbePseudoStyleFor(nsIPresContext* aPresContext, nsIContent* aParentContent, nsIAtom* aPseudoTag, nsIStyleContext* aParentContext, PRBool aForceUnique = PR_FALSE) = 0; // Get a new style context that lives in a different parent // The new context will be the same as the old if the new parent == the old parent NS_IMETHOD ReParentStyleContext(nsIPresContext* aPresContext, nsIStyleContext* aStyleContext, nsIStyleContext* aNewParentContext, nsIStyleContext** aNewStyleContext) = 0; // Test if style is dependent on content state NS_IMETHOD HasStateDependentStyle(nsIPresContext* aPresContext, nsIContent* aContent) = 0; // Create frames for the root content element and its child content NS_IMETHOD ConstructRootFrame(nsIPresContext* aPresContext, nsIContent* aDocElement, nsIFrame*& aFrameSubTree) = 0; // Causes reconstruction of a frame hierarchy rooted by the // frame document element frame. This is often called when radical style // change precludes incremental reflow. NS_IMETHOD ReconstructDocElementHierarchy(nsIPresContext* aPresContext) = 0; // Notifications of changes to the content mpodel NS_IMETHOD ContentAppended(nsIPresContext* aPresContext, nsIContent* aContainer, PRInt32 aNewIndexInContainer) = 0; NS_IMETHOD ContentInserted(nsIPresContext* aPresContext, nsIContent* aContainer, nsIContent* aChild, PRInt32 aIndexInContainer) = 0; NS_IMETHOD ContentReplaced(nsIPresContext* aPresContext, nsIContent* aContainer, nsIContent* aOldChild, nsIContent* aNewChild, PRInt32 aIndexInContainer) = 0; NS_IMETHOD ContentRemoved(nsIPresContext* aPresContext, nsIContent* aContainer, nsIContent* aChild, PRInt32 aIndexInContainer) = 0; NS_IMETHOD ContentChanged(nsIPresContext* aPresContext, nsIContent* aContent, nsISupports* aSubContent) = 0; NS_IMETHOD ContentStatesChanged(nsIPresContext* aPresContext, nsIContent* aContent1, nsIContent* aContent2) = 0; NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext, nsIContent* aChild, PRInt32 aNameSpaceID, nsIAtom* aAttribute, PRInt32 aHint) = 0; // See nsStyleConsts fot hint values // Style change notifications NS_IMETHOD StyleRuleChanged(nsIPresContext* aPresContext, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule, PRInt32 aHint) = 0; // See nsStyleConsts fot hint values NS_IMETHOD StyleRuleAdded(nsIPresContext* aPresContext, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule) = 0; NS_IMETHOD StyleRuleRemoved(nsIPresContext* aPresContext, nsIStyleSheet* aStyleSheet, nsIStyleRule* aStyleRule) = 0; // Notification that we were unable to render a replaced element. // Called when the replaced element can not be rendered, and we should // instead render the element's contents. // The content object associated with aFrame should either be a IMG // element or an OBJECT element. NS_IMETHOD CantRenderReplacedElement(nsIPresContext* aPresContext, nsIFrame* aFrame) = 0; // Request to create a continuing frame NS_IMETHOD CreateContinuingFrame(nsIPresContext* aPresContext, nsIFrame* aFrame, nsIFrame* aParentFrame, nsIFrame** aContinuingFrame) = 0; // Request to find the primary frame associated with a given content object. // This is typically called by the pres shell when there is no mapping in // the pres shell hash table NS_IMETHOD FindPrimaryFrameFor(nsIPresContext* aPresContext, nsIFrameManager* aFrameManager, nsIContent* aContent, nsIFrame** aFrame) = 0; virtual void List(FILE* out = stdout, PRInt32 aIndent = 0) = 0; virtual void ListContexts(nsIStyleContext* aRootContext, FILE* out = stdout, PRInt32 aIndent = 0) = 0; }; extern NS_LAYOUT nsresult NS_NewStyleSet(nsIStyleSet** aInstancePtrResult); #endif /* nsIStyleSet_h___ */