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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_CounterStyleManager_h_
#define mozilla_CounterStyleManager_h_
#include "nsStringFwd.h"
#include "nsRefPtrHashtable.h"
#include "nsHashKeys.h"
#include "nsStyleConsts.h"
#include "mozilla/Attributes.h"
#include "nsCSSValue.h"
class nsPresContext;
namespace mozilla {
class WritingMode;
typedef int32_t CounterValue;
class CounterStyleManager;
class AnonymousCounterStyle;
struct NegativeType;
struct PadType;
class CounterStyle
{
protected:
explicit constexpr CounterStyle(int32_t aStyle)
: mStyle(aStyle)
{
}
private:
CounterStyle(const CounterStyle& aOther) = delete;
void operator=(const CounterStyle& other) = delete;
public:
int32_t GetStyle() const { return mStyle; }
bool IsNone() const { return mStyle == NS_STYLE_LIST_STYLE_NONE; }
bool IsCustomStyle() const { return mStyle == NS_STYLE_LIST_STYLE_CUSTOM; }
// A style is dependent if it depends on the counter style manager.
// Custom styles are certainly dependent. In addition, some builtin
// styles are dependent for fallback.
bool IsDependentStyle() const;
virtual void GetStyleName(nsSubstring& aResult) = 0;
virtual void GetPrefix(nsSubstring& aResult) = 0;
virtual void GetSuffix(nsSubstring& aResult) = 0;
void GetCounterText(CounterValue aOrdinal,
WritingMode aWritingMode,
nsSubstring& aResult,
bool& aIsRTL);
virtual void GetSpokenCounterText(CounterValue aOrdinal,
WritingMode aWritingMode,
nsSubstring& aResult,
bool& aIsBullet);
// XXX This method could be removed once ::-moz-list-bullet and
// ::-moz-list-number are completely merged into ::marker.
virtual bool IsBullet() = 0;
virtual void GetNegative(NegativeType& aResult) = 0;
/**
* This method returns whether an ordinal is in the range of this
* counter style. Note that, it is possible that an ordinal in range
* is rejected by the generating algorithm.
*/
virtual bool IsOrdinalInRange(CounterValue aOrdinal) = 0;
/**
* This method returns whether an ordinal is in the default range of
* this counter style. This is the effective range when no 'range'
* descriptor is specified.
*/
virtual bool IsOrdinalInAutoRange(CounterValue aOrdinal) = 0;
virtual void GetPad(PadType& aResult) = 0;
virtual CounterStyle* GetFallback() = 0;
virtual uint8_t GetSpeakAs() = 0;
virtual bool UseNegativeSign() = 0;
virtual void CallFallbackStyle(CounterValue aOrdinal,
WritingMode aWritingMode,
nsSubstring& aResult,
bool& aIsRTL);
virtual bool GetInitialCounterText(CounterValue aOrdinal,
WritingMode aWritingMode,
nsSubstring& aResult,
bool& aIsRTL) = 0;
virtual AnonymousCounterStyle* AsAnonymous() { return nullptr; }
NS_IMETHOD_(MozExternalRefCountType) AddRef() = 0;
NS_IMETHOD_(MozExternalRefCountType) Release() = 0;
protected:
int32_t mStyle;
};
class AnonymousCounterStyle final : public CounterStyle
{
public:
explicit AnonymousCounterStyle(const nsSubstring& aContent);
explicit AnonymousCounterStyle(const nsCSSValue::Array* aValue);
virtual void GetStyleName(nsAString& aResult) override;
virtual void GetPrefix(nsAString& aResult) override;
virtual void GetSuffix(nsAString& aResult) override;
virtual bool IsBullet() override;
virtual void GetNegative(NegativeType& aResult) override;
virtual bool IsOrdinalInRange(CounterValue aOrdinal) override;
virtual bool IsOrdinalInAutoRange(CounterValue aOrdinal) override;
virtual void GetPad(PadType& aResult) override;
virtual CounterStyle* GetFallback() override;
virtual uint8_t GetSpeakAs() override;
virtual bool UseNegativeSign() override;
virtual bool GetInitialCounterText(CounterValue aOrdinal,
WritingMode aWritingMode,
nsSubstring& aResult,
bool& aIsRTL) override;
virtual AnonymousCounterStyle* AsAnonymous() override { return this; }
bool IsSingleString() const { return mSingleString; }
uint8_t GetSystem() const { return mSystem; }
const nsTArray<nsString>& GetSymbols() const { return mSymbols; }
NS_INLINE_DECL_REFCOUNTING(AnonymousCounterStyle, override)
private:
~AnonymousCounterStyle() {}
bool mSingleString;
uint8_t mSystem;
nsTArray<nsString> mSymbols;
};
class CounterStyleManager final
{
private:
~CounterStyleManager();
public:
explicit CounterStyleManager(nsPresContext* aPresContext);
static void InitializeBuiltinCounterStyles();
void Disconnect();
bool IsInitial() const
{
// only 'none' and 'decimal'
return mCacheTable.Count() == 2;
}
CounterStyle* BuildCounterStyle(const nsSubstring& aName);
static CounterStyle* GetBuiltinStyle(int32_t aStyle);
static CounterStyle* GetNoneStyle()
{
return GetBuiltinStyle(NS_STYLE_LIST_STYLE_NONE);
}
static CounterStyle* GetDecimalStyle()
{
return GetBuiltinStyle(NS_STYLE_LIST_STYLE_DECIMAL);
}
// This method will scan all existing counter styles generated by this
// manager, and remove or mark data dirty accordingly. It returns true
// if any counter style is changed, false elsewise. This method should
// be called when any counter style may be affected.
bool NotifyRuleChanged();
nsPresContext* PresContext() const { return mPresContext; }
NS_INLINE_DECL_REFCOUNTING(CounterStyleManager)
private:
nsPresContext* mPresContext;
nsRefPtrHashtable<nsStringHashKey, CounterStyle> mCacheTable;
};
} // namespace mozilla
#endif /* !defined(mozilla_CounterStyleManager_h_) */
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