139 lines
4.4 KiB
C++
139 lines
4.4 KiB
C++
/* 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/. */
|
|
|
|
/* CSS Custom Property assignments for a Declaration at a given priority */
|
|
|
|
#ifndef mozilla_CSSVariableDeclarations_h
|
|
#define mozilla_CSSVariableDeclarations_h
|
|
|
|
#include "nsDataHashtable.h"
|
|
|
|
namespace mozilla {
|
|
class CSSVariableResolver;
|
|
} // namespace mozilla
|
|
struct nsRuleData;
|
|
|
|
namespace mozilla {
|
|
|
|
class CSSVariableDeclarations
|
|
{
|
|
public:
|
|
CSSVariableDeclarations();
|
|
CSSVariableDeclarations(const CSSVariableDeclarations& aOther);
|
|
#ifdef DEBUG
|
|
~CSSVariableDeclarations();
|
|
#endif
|
|
CSSVariableDeclarations& operator=(const CSSVariableDeclarations& aOther);
|
|
|
|
/**
|
|
* Returns whether this set of variable declarations includes a variable
|
|
* with a given name.
|
|
*
|
|
* @param aName The variable name (not including any "--" prefix that would
|
|
* be part of the custom property name).
|
|
*/
|
|
bool Has(const nsAString& aName) const;
|
|
|
|
/**
|
|
* Represents the type of a variable value.
|
|
*/
|
|
enum Type {
|
|
eTokenStream, // a stream of CSS tokens (the usual type for variables)
|
|
eInitial, // 'initial'
|
|
eInherit, // 'inherit'
|
|
eUnset // 'unset'
|
|
};
|
|
|
|
/**
|
|
* Gets the value of a variable in this set of variable declarations.
|
|
*
|
|
* @param aName The variable name (not including any "--" prefix that would
|
|
* be part of the custom property name).
|
|
* @param aType Out parameter into which the type of the variable value will
|
|
* be stored.
|
|
* @param aValue Out parameter into which the value of the variable will
|
|
* be stored. If the variable is 'initial', 'inherit' or 'unset', this will
|
|
* be the empty string.
|
|
* @return Whether a variable with the given name was found. When false
|
|
* is returned, aType and aValue will not be modified.
|
|
*/
|
|
bool Get(const nsAString& aName, Type& aType, nsString& aValue) const;
|
|
|
|
/**
|
|
* Adds or modifies an existing entry in this set of variable declarations
|
|
* to have the value 'initial'.
|
|
*
|
|
* @param aName The variable name (not including any "--" prefix that would
|
|
* be part of the custom property name) whose value is to be set.
|
|
*/
|
|
void PutInitial(const nsAString& aName);
|
|
|
|
/**
|
|
* Adds or modifies an existing entry in this set of variable declarations
|
|
* to have the value 'inherit'.
|
|
*
|
|
* @param aName The variable name (not including any "--" prefix that would
|
|
* be part of the custom property name) whose value is to be set.
|
|
*/
|
|
void PutInherit(const nsAString& aName);
|
|
|
|
/**
|
|
* Adds or modifies an existing entry in this set of variable declarations
|
|
* to have the value 'unset'.
|
|
*
|
|
* @param aName The variable name (not including any "--" prefix that would
|
|
* be part of the custom property name) whose value is to be set.
|
|
*/
|
|
void PutUnset(const nsAString& aName);
|
|
|
|
/**
|
|
* Adds or modifies an existing entry in this set of variable declarations
|
|
* to have a token stream value.
|
|
*
|
|
* @param aName The variable name (not including any "--" prefix that would
|
|
* be part of the custom property name) whose value is to be set.
|
|
* @param aTokenStream The CSS token stream.
|
|
*/
|
|
void PutTokenStream(const nsAString& aName, const nsString& aTokenStream);
|
|
|
|
/**
|
|
* Removes an entry in this set of variable declarations.
|
|
*
|
|
* @param aName The variable name (not including any "--" prefix that would
|
|
* be part of the custom property name) whose entry is to be removed.
|
|
*/
|
|
void Remove(const nsAString& aName);
|
|
|
|
/**
|
|
* Returns the number of entries in this set of variable declarations.
|
|
*/
|
|
uint32_t Count() const { return mVariables.Count(); }
|
|
|
|
/**
|
|
* Copies each variable value from this object into aRuleData, unless that
|
|
* variable already exists on aRuleData.
|
|
*/
|
|
void MapRuleInfoInto(nsRuleData* aRuleData);
|
|
|
|
/**
|
|
* Copies the variables from this object into aResolver, marking them as
|
|
* specified values.
|
|
*/
|
|
void AddVariablesToResolver(CSSVariableResolver* aResolver) const;
|
|
|
|
size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
|
|
|
|
private:
|
|
/**
|
|
* Adds all the variable declarations from aOther into this object.
|
|
*/
|
|
void CopyVariablesFrom(const CSSVariableDeclarations& aOther);
|
|
|
|
nsDataHashtable<nsStringHashKey, nsString> mVariables;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif
|