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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "SMILStringType.h"
#include "nsSMILValue.h"
#include "nsDebug.h"
#include "nsString.h"
namespace mozilla {
void
SMILStringType::Init(nsSMILValue& aValue) const
{
NS_PRECONDITION(aValue.IsNull(), "Unexpected value type");
aValue.mU.mPtr = new nsString();
aValue.mType = this;
}
void
SMILStringType::Destroy(nsSMILValue& aValue) const
{
NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
delete static_cast<nsAString*>(aValue.mU.mPtr);
aValue.mU.mPtr = nullptr;
aValue.mType = nsSMILNullType::Singleton();
}
nsresult
SMILStringType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
{
NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");
const nsAString* src = static_cast<const nsAString*>(aSrc.mU.mPtr);
nsAString* dst = static_cast<nsAString*>(aDest.mU.mPtr);
*dst = *src;
return NS_OK;
}
bool
SMILStringType::IsEqual(const nsSMILValue& aLeft,
const nsSMILValue& aRight) const
{
NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
const nsAString* leftString =
static_cast<const nsAString*>(aLeft.mU.mPtr);
const nsAString* rightString =
static_cast<nsAString*>(aRight.mU.mPtr);
return *leftString == *rightString;
}
nsresult
SMILStringType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
uint32_t aCount) const
{
NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
"Trying to add invalid types");
NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
return NS_ERROR_FAILURE; // string values can't be added to each other
}
nsresult
SMILStringType::ComputeDistance(const nsSMILValue& aFrom,
const nsSMILValue& aTo,
double& aDistance) const
{
NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
return NS_ERROR_FAILURE; // there is no concept of distance between string values
}
nsresult
SMILStringType::Interpolate(const nsSMILValue& aStartVal,
const nsSMILValue& aEndVal,
double aUnitDistance,
nsSMILValue& aResult) const
{
NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
"Trying to interpolate different types");
NS_PRECONDITION(aStartVal.mType == this,
"Unexpected types for interpolation");
NS_PRECONDITION(aResult.mType == this, "Unexpected result type");
return NS_ERROR_FAILURE; // string values do not interpolate
}
} // namespace mozilla
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