RetroZilla/layout/style/nsCSSRules.cpp

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2015-10-21 05:03:22 +02:00
/* -*- 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) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Boris Zbarsky <bzbarsky@mit.edu>
*
* 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 ***** */
#include "nsCSSRules.h"
#include "nsICSSImportRule.h"
#include "nsICSSNameSpaceRule.h"
#include "nsString.h"
#include "nsIAtom.h"
#include "nsISupportsArray.h"
#include "nsIURL.h"
#include "nsCSSRule.h"
#include "nsLayoutAtoms.h"
#include "nsICSSStyleSheet.h"
#include "nsCOMPtr.h"
#include "nsIDOMCSSStyleSheet.h"
#include "nsIDOMCSSRule.h"
#include "nsIDOMCSSImportRule.h"
#include "nsIDOMCSSMediaRule.h"
#include "nsIDOMCSSMozDocumentRule.h"
#include "nsIDOMCSSCharsetRule.h"
#include "nsIMediaList.h"
#include "nsIDOMMediaList.h"
#include "nsIDOMCSSRuleList.h"
#include "nsIDOMStyleSheet.h"
#include "nsIDocument.h"
#include "nsPresContext.h"
#include "nsContentUtils.h"
#include "nsStyleConsts.h"
#include "nsDOMError.h"
#define IMPL_STYLE_RULE_INHERIT(_class, super) \
NS_IMETHODIMP _class::GetStyleSheet(nsIStyleSheet*& aSheet) const { return super::GetStyleSheet(aSheet); } \
NS_IMETHODIMP _class::SetStyleSheet(nsICSSStyleSheet* aSheet) { return super::SetStyleSheet(aSheet); } \
NS_IMETHODIMP _class::SetParentRule(nsICSSGroupRule* aRule) { return super::SetParentRule(aRule); } \
NS_IMETHODIMP _class::GetDOMRule(nsIDOMCSSRule** aDOMRule) { return CallQueryInterface(this, aDOMRule); } \
NS_IMETHODIMP _class::MapRuleInfoInto(nsRuleData* aRuleData) { return NS_OK; }
#define IMPL_STYLE_RULE_INHERIT2(_class, super) \
NS_IMETHODIMP _class::GetStyleSheet(nsIStyleSheet*& aSheet) const { return super::GetStyleSheet(aSheet); } \
NS_IMETHODIMP _class::SetParentRule(nsICSSGroupRule* aRule) { return super::SetParentRule(aRule); } \
NS_IMETHODIMP _class::GetDOMRule(nsIDOMCSSRule** aDOMRule) { return CallQueryInterface(this, aDOMRule); } \
NS_IMETHODIMP _class::MapRuleInfoInto(nsRuleData* aRuleData) { return NS_OK; }
// -------------------------------
// Style Rule List for group rules
//
class CSSGroupRuleRuleListImpl : public nsIDOMCSSRuleList
{
public:
CSSGroupRuleRuleListImpl(nsICSSGroupRule *aGroupRule);
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMCSSRULELIST
void DropReference() { mGroupRule = nsnull; }
protected:
virtual ~CSSGroupRuleRuleListImpl(void);
private:
nsICSSGroupRule* mGroupRule;
};
CSSGroupRuleRuleListImpl::CSSGroupRuleRuleListImpl(nsICSSGroupRule *aGroupRule)
{
// Not reference counted to avoid circular references.
// The rule will tell us when its going away.
mGroupRule = aGroupRule;
}
CSSGroupRuleRuleListImpl::~CSSGroupRuleRuleListImpl()
{
}
// QueryInterface implementation for CSSGroupRuleRuleList
NS_INTERFACE_MAP_BEGIN(CSSGroupRuleRuleListImpl)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRuleList)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSGroupRuleRuleList)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(CSSGroupRuleRuleListImpl)
NS_IMPL_RELEASE(CSSGroupRuleRuleListImpl)
NS_IMETHODIMP
CSSGroupRuleRuleListImpl::GetLength(PRUint32* aLength)
{
if (mGroupRule) {
PRInt32 count;
mGroupRule->StyleRuleCount(count);
*aLength = (PRUint32)count;
} else {
*aLength = 0;
}
return NS_OK;
}
NS_IMETHODIMP
CSSGroupRuleRuleListImpl::Item(PRUint32 aIndex, nsIDOMCSSRule** aReturn)
{
nsresult result = NS_OK;
*aReturn = nsnull;
if (mGroupRule) {
nsCOMPtr<nsICSSRule> rule;
result = mGroupRule->GetStyleRuleAt(aIndex, *getter_AddRefs(rule));
if (rule) {
result = rule->GetDOMRule(aReturn);
} else if (result == NS_ERROR_ILLEGAL_VALUE) {
result = NS_OK; // per spec: "Return Value ... null if ... not a valid index."
}
}
return result;
}
// -------------------------------------------
// CharsetRule
//
class CSSCharsetRuleImpl : public nsCSSRule,
public nsICSSRule,
public nsIDOMCSSCharsetRule
{
public:
CSSCharsetRuleImpl(const nsAString& aEncoding);
CSSCharsetRuleImpl(const CSSCharsetRuleImpl& aCopy);
virtual ~CSSCharsetRuleImpl(void);
NS_DECL_ISUPPORTS_INHERITED
DECL_STYLE_RULE_INHERIT
// nsIStyleRule methods
#ifdef DEBUG
NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
#endif
// nsICSSRule methods
NS_IMETHOD GetType(PRInt32& aType) const;
NS_IMETHOD Clone(nsICSSRule*& aClone) const;
// nsIDOMCSSRule interface
NS_DECL_NSIDOMCSSRULE
// nsIDOMCSSCharsetRule methods
NS_IMETHOD GetEncoding(nsAString& aEncoding);
NS_IMETHOD SetEncoding(const nsAString& aEncoding);
protected:
nsString mEncoding;
};
CSSCharsetRuleImpl::CSSCharsetRuleImpl(const nsAString& aEncoding)
: nsCSSRule(),
mEncoding(aEncoding)
{
}
CSSCharsetRuleImpl::CSSCharsetRuleImpl(const CSSCharsetRuleImpl& aCopy)
: nsCSSRule(aCopy),
mEncoding(aCopy.mEncoding)
{
}
CSSCharsetRuleImpl::~CSSCharsetRuleImpl(void)
{
}
NS_IMPL_ADDREF_INHERITED(CSSCharsetRuleImpl, nsCSSRule)
NS_IMPL_RELEASE_INHERITED(CSSCharsetRuleImpl, nsCSSRule)
// QueryInterface implementation for CSSCharsetRuleImpl
NS_INTERFACE_MAP_BEGIN(CSSCharsetRuleImpl)
NS_INTERFACE_MAP_ENTRY(nsICSSRule)
NS_INTERFACE_MAP_ENTRY(nsIStyleRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSCharsetRule)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsICSSRule)
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSCharsetRule)
NS_INTERFACE_MAP_END
IMPL_STYLE_RULE_INHERIT(CSSCharsetRuleImpl, nsCSSRule)
#ifdef DEBUG
NS_IMETHODIMP
CSSCharsetRuleImpl::List(FILE* out, PRInt32 aIndent) const
{
// Indent
for (PRInt32 indent = aIndent; --indent >= 0; ) fputs(" ", out);
fputs("@charset \"", out);
fputs(NS_LossyConvertUCS2toASCII(mEncoding).get(), out);
fputs("\"\n", out);
return NS_OK;
}
#endif
NS_IMETHODIMP
CSSCharsetRuleImpl::GetType(PRInt32& aType) const
{
aType = nsICSSRule::CHARSET_RULE;
return NS_OK;
}
NS_IMETHODIMP
CSSCharsetRuleImpl::Clone(nsICSSRule*& aClone) const
{
CSSCharsetRuleImpl* clone = new CSSCharsetRuleImpl(*this);
if (clone) {
return CallQueryInterface(clone, &aClone);
}
aClone = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
CSSCharsetRuleImpl::GetEncoding(nsAString& aEncoding)
{
aEncoding = mEncoding;
return NS_OK;
}
NS_IMETHODIMP
CSSCharsetRuleImpl::SetEncoding(const nsAString& aEncoding)
{
mEncoding = aEncoding;
return NS_OK;
}
nsresult
NS_NewCSSCharsetRule(nsICSSRule** aInstancePtrResult, const nsAString& aEncoding)
{
if (! aInstancePtrResult) {
return NS_ERROR_NULL_POINTER;
}
CSSCharsetRuleImpl* it = new CSSCharsetRuleImpl(aEncoding);
if (! it) {
return NS_ERROR_OUT_OF_MEMORY;
}
return CallQueryInterface(it, aInstancePtrResult);
}
NS_IMETHODIMP
CSSCharsetRuleImpl::GetType(PRUint16* aType)
{
*aType = nsIDOMCSSRule::CHARSET_RULE;
return NS_OK;
}
NS_IMETHODIMP
CSSCharsetRuleImpl::GetCssText(nsAString& aCssText)
{
aCssText.AssignLiteral("@charset \"");
aCssText.Append(mEncoding);
aCssText.AppendLiteral("\";");
return NS_OK;
}
NS_IMETHODIMP
CSSCharsetRuleImpl::SetCssText(const nsAString& aCssText)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
CSSCharsetRuleImpl::GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet)
{
NS_ENSURE_ARG_POINTER(aSheet);
if (mSheet) {
return CallQueryInterface(mSheet, aSheet);
}
*aSheet = nsnull;
return NS_OK;
}
NS_IMETHODIMP
CSSCharsetRuleImpl::GetParentRule(nsIDOMCSSRule** aParentRule)
{
if (mParentRule) {
return mParentRule->GetDOMRule(aParentRule);
}
*aParentRule = nsnull;
return NS_OK;
}
// -------------------------------------------
// nsICSSImportRule
//
class CSSImportRuleImpl : public nsCSSRule,
public nsICSSImportRule,
public nsIDOMCSSImportRule
{
public:
CSSImportRuleImpl(nsMediaList* aMedia);
CSSImportRuleImpl(const CSSImportRuleImpl& aCopy);
virtual ~CSSImportRuleImpl(void);
NS_DECL_ISUPPORTS_INHERITED
DECL_STYLE_RULE_INHERIT
// nsIStyleRule methods
#ifdef DEBUG
NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
#endif
// nsICSSRule methods
NS_IMETHOD GetType(PRInt32& aType) const;
NS_IMETHOD Clone(nsICSSRule*& aClone) const;
// nsICSSImportRule methods
NS_IMETHOD SetURLSpec(const nsString& aURLSpec);
NS_IMETHOD GetURLSpec(nsString& aURLSpec) const;
NS_IMETHOD SetMedia(const nsString& aMedia);
NS_IMETHOD GetMedia(nsString& aMedia) const;
NS_IMETHOD SetSheet(nsICSSStyleSheet*);
// nsIDOMCSSRule interface
NS_DECL_NSIDOMCSSRULE
// nsIDOMCSSImportRule interface
NS_DECL_NSIDOMCSSIMPORTRULE
protected:
nsString mURLSpec;
nsCOMPtr<nsMediaList> mMedia;
nsCOMPtr<nsICSSStyleSheet> mChildSheet;
};
CSSImportRuleImpl::CSSImportRuleImpl(nsMediaList* aMedia)
: nsCSSRule()
, mURLSpec()
, mMedia(aMedia)
{
// XXXbz This is really silly.... the mMedia here will be replaced
// with itself if we manage to load a sheet. Which should really
// never fail nowadays, in sane cases.
}
CSSImportRuleImpl::CSSImportRuleImpl(const CSSImportRuleImpl& aCopy)
: nsCSSRule(aCopy),
mURLSpec(aCopy.mURLSpec)
{
nsCOMPtr<nsICSSStyleSheet> sheet;
if (aCopy.mChildSheet) {
aCopy.mChildSheet->Clone(nsnull, this, nsnull, nsnull,
getter_AddRefs(sheet));
}
SetSheet(sheet);
// SetSheet sets mMedia appropriately
}
CSSImportRuleImpl::~CSSImportRuleImpl(void)
{
if (mChildSheet) {
mChildSheet->SetOwnerRule(nsnull);
}
}
NS_IMPL_ADDREF_INHERITED(CSSImportRuleImpl, nsCSSRule)
NS_IMPL_RELEASE_INHERITED(CSSImportRuleImpl, nsCSSRule)
// QueryInterface implementation for CSSImportRuleImpl
NS_INTERFACE_MAP_BEGIN(CSSImportRuleImpl)
NS_INTERFACE_MAP_ENTRY(nsICSSImportRule)
NS_INTERFACE_MAP_ENTRY(nsICSSRule)
NS_INTERFACE_MAP_ENTRY(nsIStyleRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSImportRule)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsICSSImportRule)
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSImportRule)
NS_INTERFACE_MAP_END
IMPL_STYLE_RULE_INHERIT(CSSImportRuleImpl, nsCSSRule)
#ifdef DEBUG
NS_IMETHODIMP
CSSImportRuleImpl::List(FILE* out, PRInt32 aIndent) const
{
// Indent
for (PRInt32 indent = aIndent; --indent >= 0; ) fputs(" ", out);
fputs("@import \"", out);
fputs(NS_LossyConvertUCS2toASCII(mURLSpec).get(), out);
fputs("\" ", out);
nsAutoString mediaText;
mMedia->GetText(mediaText);
fputs(NS_LossyConvertUCS2toASCII(mediaText).get(), out);
fputs("\n", out);
return NS_OK;
}
#endif
NS_IMETHODIMP
CSSImportRuleImpl::GetType(PRInt32& aType) const
{
aType = nsICSSRule::IMPORT_RULE;
return NS_OK;
}
NS_IMETHODIMP
CSSImportRuleImpl::Clone(nsICSSRule*& aClone) const
{
CSSImportRuleImpl* clone = new CSSImportRuleImpl(*this);
if (clone) {
return CallQueryInterface(clone, &aClone);
}
aClone = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
CSSImportRuleImpl::SetURLSpec(const nsString& aURLSpec)
{
mURLSpec = aURLSpec;
return NS_OK;
}
NS_IMETHODIMP
CSSImportRuleImpl::GetURLSpec(nsString& aURLSpec) const
{
aURLSpec = mURLSpec;
return NS_OK;
}
NS_IMETHODIMP
CSSImportRuleImpl::SetMedia(const nsString& aMedia)
{
if (mMedia) {
return mMedia->SetText(aMedia);
} else {
return NS_OK;
}
}
NS_IMETHODIMP
CSSImportRuleImpl::GetMedia(nsString& aMedia) const
{
if (mMedia) {
return mMedia->GetText(aMedia);
} else {
aMedia.Truncate();
return NS_OK;
}
}
NS_IMETHODIMP
CSSImportRuleImpl::SetSheet(nsICSSStyleSheet* aSheet)
{
nsresult rv;
NS_ENSURE_ARG_POINTER(aSheet);
// set the new sheet
mChildSheet = aSheet;
aSheet->SetOwnerRule(this);
// set our medialist to be the same as the sheet's medialist
nsCOMPtr<nsIDOMStyleSheet> sheet(do_QueryInterface(mChildSheet, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMMediaList> mediaList;
rv = sheet->GetMedia(getter_AddRefs(mediaList));
NS_ENSURE_SUCCESS(rv, rv);
mMedia = do_QueryInterface(mediaList);
return NS_OK;
}
nsresult
NS_NewCSSImportRule(nsICSSImportRule** aInstancePtrResult,
const nsString& aURLSpec,
nsMediaList* aMedia)
{
NS_ENSURE_ARG_POINTER(aInstancePtrResult);
CSSImportRuleImpl* it = new CSSImportRuleImpl(aMedia);
if (! it) {
return NS_ERROR_OUT_OF_MEMORY;
}
it->SetURLSpec(aURLSpec);
return CallQueryInterface(it, aInstancePtrResult);
}
NS_IMETHODIMP
CSSImportRuleImpl::GetType(PRUint16* aType)
{
NS_ENSURE_ARG_POINTER(aType);
*aType = nsIDOMCSSRule::IMPORT_RULE;
return NS_OK;
}
NS_IMETHODIMP
CSSImportRuleImpl::GetCssText(nsAString& aCssText)
{
aCssText.AssignLiteral("@import url(");
aCssText.Append(mURLSpec);
aCssText.Append(NS_LITERAL_STRING(")"));
if (mMedia) {
nsAutoString mediaText;
mMedia->GetText(mediaText);
if (!mediaText.IsEmpty()) {
aCssText.AppendLiteral(" ");
aCssText.Append(mediaText);
}
}
aCssText.AppendLiteral(";");
return NS_OK;
}
NS_IMETHODIMP
CSSImportRuleImpl::SetCssText(const nsAString& aCssText)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
CSSImportRuleImpl::GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet)
{
NS_ENSURE_ARG_POINTER(aSheet);
if (mSheet) {
return CallQueryInterface(mSheet, aSheet);
}
*aSheet = nsnull;
return NS_OK;
}
NS_IMETHODIMP
CSSImportRuleImpl::GetParentRule(nsIDOMCSSRule** aParentRule)
{
if (mParentRule) {
return mParentRule->GetDOMRule(aParentRule);
}
*aParentRule = nsnull;
return NS_OK;
}
NS_IMETHODIMP
CSSImportRuleImpl::GetHref(nsAString & aHref)
{
aHref = mURLSpec;
return NS_OK;
}
NS_IMETHODIMP
CSSImportRuleImpl::GetMedia(nsIDOMMediaList * *aMedia)
{
NS_ENSURE_ARG_POINTER(aMedia);
if (!mMedia) {
*aMedia = nsnull;
return NS_OK;
}
return CallQueryInterface(mMedia, aMedia);
}
NS_IMETHODIMP
CSSImportRuleImpl::GetStyleSheet(nsIDOMCSSStyleSheet * *aStyleSheet)
{
NS_ENSURE_ARG_POINTER(aStyleSheet);
if (!mChildSheet) {
*aStyleSheet = nsnull;
return NS_OK;
}
return CallQueryInterface(mChildSheet, aStyleSheet);
}
nsCSSGroupRule::nsCSSGroupRule()
: nsCSSRule()
, mRuleCollection(nsnull)
{
}
static PRBool
CloneRuleInto(nsISupports* aRule, void* aArray)
{
nsICSSRule* rule = (nsICSSRule*)aRule;
nsICSSRule* clone = nsnull;
rule->Clone(clone);
if (clone) {
nsISupportsArray* array = (nsISupportsArray*)aArray;
array->AppendElement(clone);
NS_RELEASE(clone);
}
return PR_TRUE;
}
static PRBool
SetParentRuleReference(nsISupports* aRule, void* aParentRule)
{
nsICSSRule* rule = NS_STATIC_CAST(nsICSSRule*, aRule);
nsCSSGroupRule* parentRule = NS_STATIC_CAST(nsCSSGroupRule*, aParentRule);
rule->SetParentRule(parentRule);
return PR_TRUE;
}
nsCSSGroupRule::nsCSSGroupRule(const nsCSSGroupRule& aCopy)
: nsCSSRule(aCopy)
, mRuleCollection(nsnull) // lazily constructed
{
if (aCopy.mRules) {
NS_NewISupportsArray(getter_AddRefs(mRules));
if (mRules) {
aCopy.mRules->EnumerateForwards(CloneRuleInto, mRules);
mRules->EnumerateForwards(SetParentRuleReference, this);
}
}
}
nsCSSGroupRule::~nsCSSGroupRule()
{
if (mRules) {
mRules->EnumerateForwards(SetParentRuleReference, nsnull);
}
if (mRuleCollection) {
mRuleCollection->DropReference();
NS_RELEASE(mRuleCollection);
}
}
IMPL_STYLE_RULE_INHERIT2(nsCSSGroupRule, nsCSSRule)
static PRBool
SetStyleSheetReference(nsISupports* aRule, void* aSheet)
{
nsICSSRule* rule = (nsICSSRule*)aRule;
nsICSSStyleSheet* sheet = (nsICSSStyleSheet*)aSheet;
rule->SetStyleSheet(sheet);
return PR_TRUE;
}
NS_IMETHODIMP
nsCSSGroupRule::SetStyleSheet(nsICSSStyleSheet* aSheet)
{
if (mRules) {
mRules->EnumerateForwards(SetStyleSheetReference, aSheet);
}
return nsCSSRule::SetStyleSheet(aSheet);
}
#ifdef DEBUG
NS_IMETHODIMP
nsCSSGroupRule::List(FILE* out, PRInt32 aIndent) const
{
fputs(" {\n", out);
if (mRules) {
PRUint32 index = 0;
PRUint32 count;
mRules->Count(&count);
while (index < count) {
nsCOMPtr<nsICSSRule> rule = dont_AddRef((nsICSSRule*)mRules->ElementAt(index++));
rule->List(out, aIndent + 1);
}
}
fputs("}\n", out);
return NS_OK;
}
#endif
NS_IMETHODIMP
nsCSSGroupRule::AppendStyleRule(nsICSSRule* aRule)
{
nsresult result = NS_OK;
if (!mRules) {
result = NS_NewISupportsArray(getter_AddRefs(mRules));
}
if (NS_SUCCEEDED(result) && mRules) {
mRules->AppendElement(aRule);
aRule->SetStyleSheet(mSheet);
aRule->SetParentRule(this);
if (mSheet) {
// XXXldb Shouldn't we be using |WillDirty| and |DidDirty| (and
// shouldn't |SetModified| be removed?
mSheet->SetModified(PR_TRUE);
}
}
return result;
}
NS_IMETHODIMP
nsCSSGroupRule::StyleRuleCount(PRInt32& aCount) const
{
if (mRules) {
PRUint32 count;
mRules->Count(&count);
aCount = (PRInt32)count;
}
else {
aCount = 0;
}
return NS_OK;
}
NS_IMETHODIMP
nsCSSGroupRule::GetStyleRuleAt(PRInt32 aIndex, nsICSSRule*& aRule) const
{
if (mRules) {
PRInt32 count = 0;
nsresult rv = StyleRuleCount(count);
NS_ENSURE_SUCCESS(rv, rv);
if (aIndex >= count) {
aRule = nsnull;
return NS_ERROR_ILLEGAL_VALUE;
}
aRule = (nsICSSRule*)mRules->ElementAt(aIndex);
return NS_OK;
}
return NS_ERROR_ILLEGAL_VALUE;
}
NS_IMETHODIMP
nsCSSGroupRule::EnumerateRulesForwards(nsISupportsArrayEnumFunc aFunc, void * aData) const
{
if (mRules) {
return ((mRules->EnumerateForwards(aFunc, aData)) ? NS_OK : NS_ENUMERATOR_FALSE);
}
return NS_OK;
}
/*
* The next two methods (DeleteStyleRuleAt and InsertStyleRulesAt)
* should never be called unless you have first called WillDirty() on
* the parents tylesheet. After they are called, DidDirty() needs to
* be called on the sheet
*/
NS_IMETHODIMP
nsCSSGroupRule::DeleteStyleRuleAt(PRUint32 aIndex)
{
NS_ENSURE_TRUE(mRules, NS_ERROR_FAILURE);
nsCOMPtr<nsICSSRule> rule = dont_AddRef((nsICSSRule*)mRules->ElementAt(aIndex));
if (rule) {
rule->SetStyleSheet(nsnull);
rule->SetParentRule(nsnull);
}
return mRules->DeleteElementAt(aIndex);
}
NS_IMETHODIMP
nsCSSGroupRule::InsertStyleRulesAt(PRUint32 aIndex, nsISupportsArray* aRules)
{
NS_ENSURE_TRUE(mRules, NS_ERROR_FAILURE);
aRules->EnumerateForwards(SetStyleSheetReference, mSheet);
aRules->EnumerateForwards(SetParentRuleReference, this);
// There is no xpcom-compatible version of InsertElementsAt.... :(
if (! mRules->InsertElementsAt(aRules, aIndex)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsCSSGroupRule::ReplaceStyleRule(nsICSSRule* aOld, nsICSSRule* aNew)
{
PRInt32 index = mRules->IndexOf(aOld);
NS_ENSURE_TRUE(index != -1, NS_ERROR_UNEXPECTED);
mRules->ReplaceElementAt(aNew, index);
aNew->SetStyleSheet(mSheet);
aNew->SetParentRule(this);
aOld->SetStyleSheet(nsnull);
aOld->SetParentRule(nsnull);
return NS_OK;
}
nsresult
nsCSSGroupRule::AppendRulesToCssText(nsAString& aCssText)
{
aCssText.AppendLiteral(" {\n");
// get all the rules
if (mRules) {
PRUint32 count;
mRules->Count(&count);
for (PRUint32 index = 0; index < count; index++) {
nsCOMPtr<nsICSSRule> rule;
mRules->GetElementAt(index, getter_AddRefs(rule));
nsCOMPtr<nsIDOMCSSRule> domRule;
rule->GetDOMRule(getter_AddRefs(domRule));
if (domRule) {
nsAutoString cssText;
domRule->GetCssText(cssText);
aCssText.Append(NS_LITERAL_STRING(" ") +
cssText +
NS_LITERAL_STRING("\n"));
}
}
}
aCssText.AppendLiteral("}");
return NS_OK;
}
nsresult
nsCSSGroupRule::GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet)
{
if (mSheet) {
return CallQueryInterface(mSheet, aSheet);
}
*aSheet = nsnull;
return NS_OK;
}
nsresult
nsCSSGroupRule::GetParentRule(nsIDOMCSSRule** aParentRule)
{
if (mParentRule) {
return mParentRule->GetDOMRule(aParentRule);
}
*aParentRule = nsnull;
return NS_OK;
}
// nsIDOMCSSMediaRule or nsIDOMCSSMozDocumentRule methods
nsresult
nsCSSGroupRule::GetCssRules(nsIDOMCSSRuleList* *aRuleList)
{
if (!mRuleCollection) {
mRuleCollection = new CSSGroupRuleRuleListImpl(this);
if (!mRuleCollection) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(mRuleCollection);
}
return CallQueryInterface(mRuleCollection, aRuleList);
}
nsresult
nsCSSGroupRule::InsertRule(const nsAString & aRule, PRUint32 aIndex, PRUint32* _retval)
{
NS_ENSURE_TRUE(mSheet, NS_ERROR_FAILURE);
if (!mRules) {
nsresult rv = NS_NewISupportsArray(getter_AddRefs(mRules));
if (NS_FAILED(rv))
return rv;
}
PRUint32 count;
mRules->Count(&count);
if (aIndex > count)
return NS_ERROR_DOM_INDEX_SIZE_ERR;
return mSheet->InsertRuleIntoGroup(aRule, this, aIndex, _retval);
}
nsresult
nsCSSGroupRule::DeleteRule(PRUint32 aIndex)
{
NS_ENSURE_TRUE(mSheet, NS_ERROR_FAILURE);
if (!mRules) {
return NS_ERROR_DOM_INDEX_SIZE_ERR;
}
PRUint32 count;
mRules->Count(&count);
if (aIndex >= count)
return NS_ERROR_DOM_INDEX_SIZE_ERR;
return mSheet->DeleteRuleFromGroup(this, aIndex);
}
// -------------------------------------------
// nsICSSMediaRule
//
nsCSSMediaRule::nsCSSMediaRule()
{
}
nsCSSMediaRule::nsCSSMediaRule(const nsCSSMediaRule& aCopy)
: nsCSSGroupRule(aCopy)
{
if (aCopy.mMedia) {
aCopy.mMedia->Clone(getter_AddRefs(mMedia));
if (mMedia) {
// XXXldb This doesn't really make sense.
mMedia->SetStyleSheet(aCopy.mSheet);
}
}
}
nsCSSMediaRule::~nsCSSMediaRule()
{
if (mMedia) {
mMedia->SetStyleSheet(nsnull);
}
}
NS_IMPL_ADDREF_INHERITED(nsCSSMediaRule, nsCSSRule)
NS_IMPL_RELEASE_INHERITED(nsCSSMediaRule, nsCSSRule)
// QueryInterface implementation for nsCSSMediaRule
NS_INTERFACE_MAP_BEGIN(nsCSSMediaRule)
NS_INTERFACE_MAP_ENTRY(nsICSSGroupRule)
NS_INTERFACE_MAP_ENTRY(nsICSSRule)
NS_INTERFACE_MAP_ENTRY(nsIStyleRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSMediaRule)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsCSSGroupRule)
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSMediaRule)
NS_INTERFACE_MAP_END
NS_IMETHODIMP
nsCSSMediaRule::SetStyleSheet(nsICSSStyleSheet* aSheet)
{
if (mMedia) {
// Set to null so it knows it's leaving one sheet and joining another.
mMedia->SetStyleSheet(nsnull);
mMedia->SetStyleSheet(aSheet);
}
return nsCSSGroupRule::SetStyleSheet(aSheet);
}
#ifdef DEBUG
NS_IMETHODIMP
nsCSSMediaRule::List(FILE* out, PRInt32 aIndent) const
{
for (PRInt32 indent = aIndent; --indent >= 0; ) fputs(" ", out);
nsAutoString buffer;
fputs("@media ", out);
if (mMedia) {
nsAutoString mediaText;
mMedia->GetText(mediaText);
fputs(NS_LossyConvertUCS2toASCII(mediaText).get(), out);
}
return nsCSSGroupRule::List(out, aIndent);
}
#endif
NS_IMETHODIMP
nsCSSMediaRule::GetType(PRInt32& aType) const
{
aType = nsICSSRule::MEDIA_RULE;
return NS_OK;
}
NS_IMETHODIMP
nsCSSMediaRule::Clone(nsICSSRule*& aClone) const
{
nsCSSMediaRule* clone = new nsCSSMediaRule(*this);
if (clone) {
return CallQueryInterface(clone, &aClone);
}
aClone = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
nsresult
nsCSSMediaRule::SetMedia(nsMediaList* aMedia)
{
mMedia = aMedia;
if (aMedia)
mMedia->SetStyleSheet(mSheet);
return NS_OK;
}
// nsIDOMCSSRule methods
NS_IMETHODIMP
nsCSSMediaRule::GetType(PRUint16* aType)
{
*aType = nsIDOMCSSRule::MEDIA_RULE;
return NS_OK;
}
NS_IMETHODIMP
nsCSSMediaRule::GetCssText(nsAString& aCssText)
{
aCssText.AssignLiteral("@media ");
// get all the media
if (mMedia) {
nsAutoString mediaText;
mMedia->GetText(mediaText);
aCssText.Append(mediaText);
}
return nsCSSGroupRule::AppendRulesToCssText(aCssText);
}
NS_IMETHODIMP
nsCSSMediaRule::SetCssText(const nsAString& aCssText)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsCSSMediaRule::GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet)
{
return nsCSSGroupRule::GetParentStyleSheet(aSheet);
}
NS_IMETHODIMP
nsCSSMediaRule::GetParentRule(nsIDOMCSSRule** aParentRule)
{
return nsCSSGroupRule::GetParentRule(aParentRule);
}
// nsIDOMCSSMediaRule methods
NS_IMETHODIMP
nsCSSMediaRule::GetMedia(nsIDOMMediaList* *aMedia)
{
NS_ENSURE_ARG_POINTER(aMedia);
if (!mMedia) {
*aMedia = nsnull;
return NS_OK;
}
return CallQueryInterface(mMedia, aMedia);
}
NS_IMETHODIMP
nsCSSMediaRule::GetCssRules(nsIDOMCSSRuleList* *aRuleList)
{
return nsCSSGroupRule::GetCssRules(aRuleList);
}
NS_IMETHODIMP
nsCSSMediaRule::InsertRule(const nsAString & aRule, PRUint32 aIndex, PRUint32* _retval)
{
return nsCSSGroupRule::InsertRule(aRule, aIndex, _retval);
}
NS_IMETHODIMP
nsCSSMediaRule::DeleteRule(PRUint32 aIndex)
{
return nsCSSGroupRule::DeleteRule(aIndex);
}
// nsICSSGroupRule interface
NS_IMETHODIMP_(PRBool)
nsCSSMediaRule::UseForPresentation(nsPresContext* aPresContext)
{
if (mMedia) {
return mMedia->Matches(aPresContext);
}
return PR_TRUE;
}
nsCSSDocumentRule::nsCSSDocumentRule(void)
{
}
nsCSSDocumentRule::nsCSSDocumentRule(const nsCSSDocumentRule& aCopy)
: nsCSSGroupRule(aCopy)
, mURLs(new URL(*aCopy.mURLs))
{
}
nsCSSDocumentRule::~nsCSSDocumentRule(void)
{
}
NS_IMPL_ADDREF_INHERITED(nsCSSDocumentRule, nsCSSRule)
NS_IMPL_RELEASE_INHERITED(nsCSSDocumentRule, nsCSSRule)
// QueryInterface implementation for nsCSSDocumentRule
NS_INTERFACE_MAP_BEGIN(nsCSSDocumentRule)
NS_INTERFACE_MAP_ENTRY(nsICSSGroupRule)
NS_INTERFACE_MAP_ENTRY(nsICSSRule)
NS_INTERFACE_MAP_ENTRY(nsIStyleRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSMozDocumentRule)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsCSSGroupRule)
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSMozDocumentRule)
NS_INTERFACE_MAP_END
#ifdef DEBUG
NS_IMETHODIMP
nsCSSDocumentRule::List(FILE* out, PRInt32 aIndent) const
{
for (PRInt32 indent = aIndent; --indent >= 0; ) fputs(" ", out);
nsCAutoString str;
str.AssignLiteral("@-moz-document ");
for (URL *url = mURLs; url; url = url->next) {
switch (url->func) {
case eURL:
str.AppendLiteral("url(\"");
break;
case eURLPrefix:
str.AppendLiteral("url-prefix(\"");
break;
case eDomain:
str.AppendLiteral("domain(\"");
break;
}
nsCAutoString escapedURL(url->url);
escapedURL.ReplaceSubstring("\"", "\\\""); // escape quotes
str.Append(escapedURL);
str.AppendLiteral("\"), ");
}
str.Cut(str.Length() - 2, 1); // remove last ,
fputs(str.get(), out);
return nsCSSGroupRule::List(out, aIndent);
}
#endif
NS_IMETHODIMP
nsCSSDocumentRule::GetType(PRInt32& aType) const
{
aType = nsICSSRule::DOCUMENT_RULE;
return NS_OK;
}
NS_IMETHODIMP
nsCSSDocumentRule::Clone(nsICSSRule*& aClone) const
{
nsCSSDocumentRule* clone = new nsCSSDocumentRule(*this);
if (clone) {
return CallQueryInterface(clone, &aClone);
}
aClone = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
// nsIDOMCSSRule methods
NS_IMETHODIMP
nsCSSDocumentRule::GetType(PRUint16* aType)
{
// XXX What should really happen here?
*aType = nsIDOMCSSRule::UNKNOWN_RULE;
return NS_OK;
}
NS_IMETHODIMP
nsCSSDocumentRule::GetCssText(nsAString& aCssText)
{
aCssText.AssignLiteral("@-moz-document ");
for (URL *url = mURLs; url; url = url->next) {
switch (url->func) {
case eURL:
aCssText.AppendLiteral("url(\"");
break;
case eURLPrefix:
aCssText.AppendLiteral("url-prefix(\"");
break;
case eDomain:
aCssText.AppendLiteral("domain(\"");
break;
}
nsCAutoString escapedURL(url->url);
escapedURL.ReplaceSubstring("\"", "\\\""); // escape quotes
AppendUTF8toUTF16(escapedURL, aCssText);
aCssText.AppendLiteral("\"), ");
}
aCssText.Cut(aCssText.Length() - 2, 1); // remove last ,
return nsCSSGroupRule::AppendRulesToCssText(aCssText);
}
NS_IMETHODIMP
nsCSSDocumentRule::SetCssText(const nsAString& aCssText)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsCSSDocumentRule::GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet)
{
return nsCSSGroupRule::GetParentStyleSheet(aSheet);
}
NS_IMETHODIMP
nsCSSDocumentRule::GetParentRule(nsIDOMCSSRule** aParentRule)
{
return nsCSSGroupRule::GetParentRule(aParentRule);
}
NS_IMETHODIMP
nsCSSDocumentRule::GetCssRules(nsIDOMCSSRuleList* *aRuleList)
{
return nsCSSGroupRule::GetCssRules(aRuleList);
}
NS_IMETHODIMP
nsCSSDocumentRule::InsertRule(const nsAString & aRule, PRUint32 aIndex, PRUint32* _retval)
{
return nsCSSGroupRule::InsertRule(aRule, aIndex, _retval);
}
NS_IMETHODIMP
nsCSSDocumentRule::DeleteRule(PRUint32 aIndex)
{
return nsCSSGroupRule::DeleteRule(aIndex);
}
// nsICSSGroupRule interface
NS_IMETHODIMP_(PRBool)
nsCSSDocumentRule::UseForPresentation(nsPresContext* aPresContext)
{
nsIURI *docURI = aPresContext->GetDocument()->GetDocumentURI();
nsCAutoString docURISpec;
if (docURI)
docURI->GetSpec(docURISpec);
for (URL *url = mURLs; url; url = url->next) {
switch (url->func) {
case eURL: {
if (docURISpec == url->url)
return PR_TRUE;
} break;
case eURLPrefix: {
if (StringBeginsWith(docURISpec, url->url))
return PR_TRUE;
} break;
case eDomain: {
nsCAutoString host;
if (docURI)
docURI->GetHost(host);
PRInt32 lenDiff = host.Length() - url->url.Length();
if (lenDiff == 0) {
if (host == url->url)
return PR_TRUE;
} else {
if (StringEndsWith(host, url->url) &&
host.CharAt(lenDiff - 1) == '.')
return PR_TRUE;
}
} break;
}
}
return PR_FALSE;
}
// -------------------------------------------
// nsICSSNameSpaceRule
//
class CSSNameSpaceRuleImpl : public nsCSSRule,
public nsICSSNameSpaceRule,
public nsIDOMCSSRule
{
public:
CSSNameSpaceRuleImpl(void);
CSSNameSpaceRuleImpl(const CSSNameSpaceRuleImpl& aCopy);
virtual ~CSSNameSpaceRuleImpl(void);
NS_DECL_ISUPPORTS_INHERITED
DECL_STYLE_RULE_INHERIT
// nsIStyleRule methods
#ifdef DEBUG
NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
#endif
// nsICSSRule methods
NS_IMETHOD GetType(PRInt32& aType) const;
NS_IMETHOD Clone(nsICSSRule*& aClone) const;
// nsICSSNameSpaceRule methods
NS_IMETHOD GetPrefix(nsIAtom*& aPrefix) const;
NS_IMETHOD SetPrefix(nsIAtom* aPrefix);
NS_IMETHOD GetURLSpec(nsString& aURLSpec) const;
NS_IMETHOD SetURLSpec(const nsString& aURLSpec);
// nsIDOMCSSRule interface
NS_DECL_NSIDOMCSSRULE
protected:
nsIAtom* mPrefix;
nsString mURLSpec;
};
CSSNameSpaceRuleImpl::CSSNameSpaceRuleImpl(void)
: nsCSSRule(),
mPrefix(nsnull),
mURLSpec()
{
}
CSSNameSpaceRuleImpl::CSSNameSpaceRuleImpl(const CSSNameSpaceRuleImpl& aCopy)
: nsCSSRule(aCopy),
mPrefix(aCopy.mPrefix),
mURLSpec(aCopy.mURLSpec)
{
NS_IF_ADDREF(mPrefix);
}
CSSNameSpaceRuleImpl::~CSSNameSpaceRuleImpl(void)
{
NS_IF_RELEASE(mPrefix);
}
NS_IMPL_ADDREF_INHERITED(CSSNameSpaceRuleImpl, nsCSSRule)
NS_IMPL_RELEASE_INHERITED(CSSNameSpaceRuleImpl, nsCSSRule)
// QueryInterface implementation for CSSNameSpaceRuleImpl
NS_INTERFACE_MAP_BEGIN(CSSNameSpaceRuleImpl)
NS_INTERFACE_MAP_ENTRY(nsICSSNameSpaceRule)
NS_INTERFACE_MAP_ENTRY(nsICSSRule)
NS_INTERFACE_MAP_ENTRY(nsIStyleRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRule)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsICSSNameSpaceRule)
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSNameSpaceRule)
NS_INTERFACE_MAP_END
IMPL_STYLE_RULE_INHERIT(CSSNameSpaceRuleImpl, nsCSSRule)
#ifdef DEBUG
NS_IMETHODIMP
CSSNameSpaceRuleImpl::List(FILE* out, PRInt32 aIndent) const
{
for (PRInt32 indent = aIndent; --indent >= 0; ) fputs(" ", out);
nsAutoString buffer;
fputs("@namespace ", out);
if (mPrefix) {
mPrefix->ToString(buffer);
fputs(NS_LossyConvertUCS2toASCII(buffer).get(), out);
fputs(" ", out);
}
fputs("url(", out);
fputs(NS_LossyConvertUCS2toASCII(mURLSpec).get(), out);
fputs(")\n", out);
return NS_OK;
}
#endif
NS_IMETHODIMP
CSSNameSpaceRuleImpl::GetType(PRInt32& aType) const
{
aType = nsICSSRule::NAMESPACE_RULE;
return NS_OK;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::Clone(nsICSSRule*& aClone) const
{
CSSNameSpaceRuleImpl* clone = new CSSNameSpaceRuleImpl(*this);
if (clone) {
return CallQueryInterface(clone, &aClone);
}
aClone = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::GetPrefix(nsIAtom*& aPrefix) const
{
aPrefix = mPrefix;
NS_IF_ADDREF(aPrefix);
return NS_OK;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::SetPrefix(nsIAtom* aPrefix)
{
NS_IF_RELEASE(mPrefix);
mPrefix = aPrefix;
NS_IF_ADDREF(mPrefix);
return NS_OK;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::GetURLSpec(nsString& aURLSpec) const
{
aURLSpec = mURLSpec;
return NS_OK;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::SetURLSpec(const nsString& aURLSpec)
{
mURLSpec = aURLSpec;
return NS_OK;
}
nsresult
NS_NewCSSNameSpaceRule(nsICSSNameSpaceRule** aInstancePtrResult,
nsIAtom* aPrefix, const nsString& aURLSpec)
{
if (! aInstancePtrResult) {
return NS_ERROR_NULL_POINTER;
}
CSSNameSpaceRuleImpl* it = new CSSNameSpaceRuleImpl();
if (! it) {
return NS_ERROR_OUT_OF_MEMORY;
}
it->SetPrefix(aPrefix);
it->SetURLSpec(aURLSpec);
return CallQueryInterface(it, aInstancePtrResult);
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::GetType(PRUint16* aType)
{
// XXX What should really happen here?
*aType = nsIDOMCSSRule::UNKNOWN_RULE;
return NS_OK;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::GetCssText(nsAString& aCssText)
{
aCssText.AssignLiteral("@namespace ");
if (mPrefix) {
nsString atomStr;
mPrefix->ToString(atomStr);
aCssText.Append(atomStr);
aCssText.AppendLiteral(" ");
}
aCssText.AppendLiteral("url(");
aCssText.Append(mURLSpec);
aCssText.Append(NS_LITERAL_STRING(");"));
return NS_OK;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::SetCssText(const nsAString& aCssText)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet)
{
if (mSheet) {
return CallQueryInterface(mSheet, aSheet);
}
*aSheet = nsnull;
return NS_OK;
}
NS_IMETHODIMP
CSSNameSpaceRuleImpl::GetParentRule(nsIDOMCSSRule** aParentRule)
{
if (mParentRule) {
return mParentRule->GetDOMRule(aParentRule);
}
*aParentRule = nsnull;
return NS_OK;
}