mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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356 lines
8.9 KiB
C++
356 lines
8.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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.org code.
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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
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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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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* style sheet and style rule processor representing style attributes
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*/
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#include "nsIHTMLCSSStyleSheet.h"
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#include "nsCRT.h"
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#include "nsIAtom.h"
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#include "nsIURL.h"
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#include "nsCSSPseudoElements.h"
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#include "nsIStyleRule.h"
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#include "nsIFrame.h"
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#include "nsICSSStyleRule.h"
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#include "nsIStyleRuleProcessor.h"
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#include "nsPresContext.h"
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#include "nsIDocument.h"
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#include "nsCOMPtr.h"
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#include "nsRuleWalker.h"
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#include "nsRuleData.h"
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#include "nsRuleProcessorData.h"
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// -----------------------------------------------------------
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class HTMLCSSStyleSheetImpl : public nsIHTMLCSSStyleSheet,
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public nsIStyleRuleProcessor {
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public:
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HTMLCSSStyleSheetImpl();
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NS_DECL_ISUPPORTS
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// basic style sheet data
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NS_IMETHOD Init(nsIURI* aURL, nsIDocument* aDocument);
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NS_IMETHOD Reset(nsIURI* aURL);
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NS_IMETHOD GetSheetURI(nsIURI** aSheetURL) const;
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NS_IMETHOD GetBaseURI(nsIURI** aBaseURL) const;
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NS_IMETHOD GetTitle(nsString& aTitle) const;
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NS_IMETHOD GetType(nsString& aType) const;
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NS_IMETHOD_(PRBool) HasRules() const;
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NS_IMETHOD GetApplicable(PRBool& aApplicable) const;
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NS_IMETHOD SetEnabled(PRBool aEnabled);
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NS_IMETHOD GetComplete(PRBool& aComplete) const;
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NS_IMETHOD SetComplete();
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// style sheet owner info
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NS_IMETHOD GetParentSheet(nsIStyleSheet*& aParent) const; // will be null
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NS_IMETHOD GetOwningDocument(nsIDocument*& aDocument) const;
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NS_IMETHOD SetOwningDocument(nsIDocument* aDocument);
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// nsIStyleRuleProcessor api
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NS_IMETHOD RulesMatching(ElementRuleProcessorData* aData);
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NS_IMETHOD RulesMatching(PseudoRuleProcessorData* aData);
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NS_IMETHOD HasStateDependentStyle(StateRuleProcessorData* aData,
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nsReStyleHint* aResult);
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NS_IMETHOD HasAttributeDependentStyle(AttributeRuleProcessorData* aData,
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nsReStyleHint* aResult);
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NS_IMETHOD MediumFeaturesChanged(nsPresContext* aPresContext,
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PRBool* aResult);
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#ifdef DEBUG
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virtual void List(FILE* out = stdout, PRInt32 aIndent = 0) const;
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#endif
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private:
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// These are not supported and are not implemented!
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HTMLCSSStyleSheetImpl(const HTMLCSSStyleSheetImpl& aCopy);
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HTMLCSSStyleSheetImpl& operator=(const HTMLCSSStyleSheetImpl& aCopy);
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protected:
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virtual ~HTMLCSSStyleSheetImpl();
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protected:
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nsIURI* mURL;
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nsIDocument* mDocument;
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};
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HTMLCSSStyleSheetImpl::HTMLCSSStyleSheetImpl()
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: nsIHTMLCSSStyleSheet(),
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mRefCnt(0),
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mURL(nsnull),
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mDocument(nsnull)
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{
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}
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HTMLCSSStyleSheetImpl::~HTMLCSSStyleSheetImpl()
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{
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NS_RELEASE(mURL);
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}
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NS_IMPL_ISUPPORTS3(HTMLCSSStyleSheetImpl,
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nsIHTMLCSSStyleSheet,
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nsIStyleSheet,
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nsIStyleRuleProcessor)
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::RulesMatching(ElementRuleProcessorData* aData)
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{
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nsIContent* content = aData->mContent;
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if (content) {
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// just get the one and only style rule from the content's STYLE attribute
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nsICSSStyleRule* rule = content->GetInlineStyleRule();
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if (rule)
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aData->mRuleWalker->Forward(rule);
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#ifdef MOZ_SMIL
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rule = content->GetSMILOverrideStyleRule();
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if (rule)
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aData->mRuleWalker->Forward(rule);
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#endif // MOZ_SMIL
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::RulesMatching(PseudoRuleProcessorData* aData)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::Init(nsIURI* aURL, nsIDocument* aDocument)
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{
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NS_PRECONDITION(aURL && aDocument, "null ptr");
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if (! aURL || ! aDocument)
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return NS_ERROR_NULL_POINTER;
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if (mURL || mDocument)
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return NS_ERROR_ALREADY_INITIALIZED;
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mDocument = aDocument; // not refcounted!
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mURL = aURL;
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NS_ADDREF(mURL);
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return NS_OK;
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}
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// Test if style is dependent on content state
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::HasStateDependentStyle(StateRuleProcessorData* aData,
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nsReStyleHint* aResult)
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{
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*aResult = nsReStyleHint(0);
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return NS_OK;
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}
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// Test if style is dependent on attribute
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::HasAttributeDependentStyle(AttributeRuleProcessorData* aData,
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nsReStyleHint* aResult)
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{
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*aResult = nsReStyleHint(0);
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::MediumFeaturesChanged(nsPresContext* aPresContext,
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PRBool* aRulesChanged)
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{
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*aRulesChanged = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::Reset(nsIURI* aURL)
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{
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NS_IF_RELEASE(mURL);
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mURL = aURL;
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NS_ADDREF(mURL);
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::GetSheetURI(nsIURI** aSheetURL) const
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{
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NS_IF_ADDREF(mURL);
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*aSheetURL = mURL;
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::GetBaseURI(nsIURI** aBaseURL) const
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{
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NS_IF_ADDREF(mURL);
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*aBaseURL = mURL;
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::GetTitle(nsString& aTitle) const
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{
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aTitle.AssignLiteral("Internal HTML/CSS Style Sheet");
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::GetType(nsString& aType) const
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{
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aType.AssignLiteral("text/html");
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return NS_OK;
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}
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NS_IMETHODIMP_(PRBool)
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HTMLCSSStyleSheetImpl::HasRules() const
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{
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// Say we always have rules, since we don't know.
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return PR_TRUE;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::GetApplicable(PRBool& aApplicable) const
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{
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aApplicable = PR_TRUE;
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::SetEnabled(PRBool aEnabled)
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{ // these can't be disabled
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::GetComplete(PRBool& aComplete) const
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{
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aComplete = PR_TRUE;
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::SetComplete()
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{
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return NS_OK;
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}
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// style sheet owner info
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::GetParentSheet(nsIStyleSheet*& aParent) const
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{
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aParent = nsnull;
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::GetOwningDocument(nsIDocument*& aDocument) const
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{
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NS_IF_ADDREF(mDocument);
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aDocument = mDocument;
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLCSSStyleSheetImpl::SetOwningDocument(nsIDocument* aDocument)
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{
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mDocument = aDocument;
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return NS_OK;
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}
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#ifdef DEBUG
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void HTMLCSSStyleSheetImpl::List(FILE* out, PRInt32 aIndent) const
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{
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// Indent
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for (PRInt32 index = aIndent; --index >= 0; ) fputs(" ", out);
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fputs("HTML CSS Style Sheet: ", out);
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nsCAutoString urlSpec;
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mURL->GetSpec(urlSpec);
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if (!urlSpec.IsEmpty()) {
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fputs(urlSpec.get(), out);
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}
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fputs("\n", out);
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}
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#endif
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// XXX For backwards compatibility and convenience
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nsresult
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NS_NewHTMLCSSStyleSheet(nsIHTMLCSSStyleSheet** aInstancePtrResult,
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nsIURI* aURL, nsIDocument* aDocument)
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{
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nsresult rv;
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nsIHTMLCSSStyleSheet* sheet;
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if (NS_FAILED(rv = NS_NewHTMLCSSStyleSheet(&sheet)))
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return rv;
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if (NS_FAILED(rv = sheet->Init(aURL, aDocument))) {
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NS_RELEASE(sheet);
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return rv;
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}
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*aInstancePtrResult = sheet;
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return NS_OK;
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}
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nsresult
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NS_NewHTMLCSSStyleSheet(nsIHTMLCSSStyleSheet** aInstancePtrResult)
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{
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if (aInstancePtrResult == nsnull) {
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return NS_ERROR_NULL_POINTER;
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}
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HTMLCSSStyleSheetImpl* it = new HTMLCSSStyleSheetImpl();
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(it);
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*aInstancePtrResult = it;
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return NS_OK;
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}
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