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130 lines
5.1 KiB
C++
130 lines
5.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* A base class which implements nsIStyleSheetLinkingElement and can
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* be subclassed by various content nodes that want to load
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* stylesheets (<style>, <link>, processing instructions, etc).
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*/
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#ifndef nsStyleLinkElement_h___
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#define nsStyleLinkElement_h___
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#include "nsCOMPtr.h"
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#include "nsIDOMLinkStyle.h"
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#include "nsIStyleSheetLinkingElement.h"
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#include "nsIStyleSheet.h"
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#include "nsIURI.h"
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#include "nsTArray.h"
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class nsIDocument;
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class nsStyleLinkElement : public nsIDOMLinkStyle,
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public nsIStyleSheetLinkingElement
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{
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public:
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nsStyleLinkElement();
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virtual ~nsStyleLinkElement();
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) = 0;
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// nsIDOMLinkStyle
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NS_DECL_NSIDOMLINKSTYLE
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// nsIStyleSheetLinkingElement
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NS_IMETHOD SetStyleSheet(nsIStyleSheet* aStyleSheet);
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NS_IMETHOD GetStyleSheet(nsIStyleSheet*& aStyleSheet);
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NS_IMETHOD InitStyleLinkElement(PRBool aDontLoadStyle);
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NS_IMETHOD UpdateStyleSheet(nsICSSLoaderObserver* aObserver,
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PRBool* aWillNotify,
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PRBool* aIsAlternate);
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NS_IMETHOD SetEnableUpdates(PRBool aEnableUpdates);
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NS_IMETHOD GetCharset(nsAString& aCharset);
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virtual void OverrideBaseURI(nsIURI* aNewBaseURI);
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virtual void SetLineNumber(PRUint32 aLineNumber);
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static void ParseLinkTypes(const nsAString& aTypes, nsTArray<nsString>& aResult);
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void UpdateStyleSheetInternal() { UpdateStyleSheetInternal(nsnull); }
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protected:
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/**
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* @param aOldDocument should be non-null only if we're updating because we
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* removed the node from the document.
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* @param aForceUpdate PR_TRUE will force the update even if the URI has not
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* changed. This should be used in cases when something
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* about the content that affects the resulting sheet
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* changed but the URI may not have changed.
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*/
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nsresult UpdateStyleSheetInternal(nsIDocument *aOldDocument,
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PRBool aForceUpdate = PR_FALSE);
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virtual already_AddRefed<nsIURI> GetStyleSheetURL(PRBool* aIsInline) = 0;
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virtual void GetStyleSheetInfo(nsAString& aTitle,
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nsAString& aType,
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nsAString& aMedia,
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PRBool* aIsAlternate) = 0;
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nsIStyleSheet* GetStyleSheet() { return mStyleSheet; }
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private:
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/**
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* @param aOldDocument should be non-null only if we're updating because we
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* removed the node from the document.
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* @param aForceUpdate PR_TRUE will force the update even if the URI has not
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* changed. This should be used in cases when something
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* about the content that affects the resulting sheet
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* changed but the URI may not have changed.
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*/
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nsresult DoUpdateStyleSheet(nsIDocument *aOldDocument,
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nsICSSLoaderObserver* aObserver,
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PRBool* aWillNotify,
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PRBool* aIsAlternate,
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PRBool aForceUpdate);
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nsCOMPtr<nsIStyleSheet> mStyleSheet;
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protected:
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PRPackedBool mDontLoadStyle;
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PRPackedBool mUpdatesEnabled;
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PRUint32 mLineNumber;
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};
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#endif /* nsStyleLinkElement_h___ */
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