gecko-dev/layout/style/CSSVariableValues.cpp
Cameron McCormack 99b85f3cd1 Bug 773296 - Part 22: Expose variables through the nsComputedDOMStyle indexed getter. r=dbaron
This exposes the names of the custom properties on a computed style
object through its indexed property getter, just after all of the
built-in properties.
2013-12-12 13:09:45 +11:00

148 lines
3.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; 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/. */
/* computed CSS Variable values */
#include "CSSVariableValues.h"
#include "CSSVariableResolver.h"
namespace mozilla {
CSSVariableValues::CSSVariableValues()
{
MOZ_COUNT_CTOR(CSSVariableValues);
}
CSSVariableValues::CSSVariableValues(const CSSVariableValues& aOther)
{
MOZ_COUNT_CTOR(CSSVariableValues);
CopyVariablesFrom(aOther);
}
#ifdef DEBUG
CSSVariableValues::~CSSVariableValues()
{
MOZ_COUNT_DTOR(CSSVariableValues);
}
#endif
CSSVariableValues&
CSSVariableValues::operator=(const CSSVariableValues& aOther)
{
if (this == &aOther) {
return *this;
}
mVariableIDs.Clear();
mVariables.Clear();
CopyVariablesFrom(aOther);
return *this;
}
bool
CSSVariableValues::operator==(const CSSVariableValues& aOther) const
{
if (mVariables.Length() != aOther.mVariables.Length()) {
return false;
}
for (size_t thisIndex = 0; thisIndex < mVariables.Length(); ++thisIndex) {
size_t otherIndex;
if (!aOther.mVariableIDs.Get(mVariables[thisIndex].mVariableName,
&otherIndex)) {
return false;
}
const nsString& otherValue = aOther.mVariables[otherIndex].mValue;
if (!mVariables[thisIndex].mValue.Equals(otherValue)) {
return false;
}
}
return true;
}
size_t
CSSVariableValues::Count() const
{
return mVariables.Length();
}
bool
CSSVariableValues::Get(const nsAString& aName, nsString& aValue) const
{
size_t id;
if (!mVariableIDs.Get(aName, &id)) {
return false;
}
aValue = mVariables[id].mValue;
return true;
}
bool
CSSVariableValues::Get(const nsAString& aName,
nsString& aValue,
nsCSSTokenSerializationType& aFirstToken,
nsCSSTokenSerializationType& aLastToken) const
{
size_t id;
if (!mVariableIDs.Get(aName, &id)) {
return false;
}
aValue = mVariables[id].mValue;
aFirstToken = mVariables[id].mFirstToken;
aLastToken = mVariables[id].mLastToken;
return true;
}
void
CSSVariableValues::GetVariableAt(size_t aIndex, nsAString& aName) const
{
aName = mVariables[aIndex].mVariableName;
}
void
CSSVariableValues::Put(const nsAString& aName,
nsString aValue,
nsCSSTokenSerializationType aFirstToken,
nsCSSTokenSerializationType aLastToken)
{
size_t id;
if (mVariableIDs.Get(aName, &id)) {
mVariables[id].mValue = aValue;
mVariables[id].mFirstToken = aFirstToken;
mVariables[id].mLastToken = aLastToken;
} else {
id = mVariables.Length();
mVariableIDs.Put(aName, id);
mVariables.AppendElement(Variable(aName, aValue, aFirstToken, aLastToken));
}
}
void
CSSVariableValues::CopyVariablesFrom(const CSSVariableValues& aOther)
{
for (size_t i = 0, n = aOther.mVariables.Length(); i < n; i++) {
Put(aOther.mVariables[i].mVariableName,
aOther.mVariables[i].mValue,
aOther.mVariables[i].mFirstToken,
aOther.mVariables[i].mLastToken);
}
}
void
CSSVariableValues::AddVariablesToResolver(CSSVariableResolver* aResolver) const
{
for (size_t i = 0, n = mVariables.Length(); i < n; i++) {
aResolver->Put(mVariables[i].mVariableName,
mVariables[i].mValue,
mVariables[i].mFirstToken,
mVariables[i].mLastToken,
true);
}
}
} // namespace mozilla