204 lines
6.0 KiB
C++
204 lines
6.0 KiB
C++
/*
|
|
* Copyright (C) 2019 Apple Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "ExceptionOr.h"
|
|
#include "SVGProperty.h"
|
|
|
|
namespace WebCore {
|
|
|
|
template<typename ItemType>
|
|
class SVGList : public SVGProperty {
|
|
public:
|
|
unsigned length() const { return numberOfItems(); }
|
|
|
|
unsigned numberOfItems() const
|
|
{
|
|
return m_items.size();
|
|
}
|
|
|
|
ExceptionOr<void> clear()
|
|
{
|
|
auto result = canAlterList();
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
ASSERT(result.releaseReturnValue());
|
|
|
|
clearItems();
|
|
commitChange();
|
|
return { };
|
|
}
|
|
|
|
ExceptionOr<ItemType> getItem(unsigned index)
|
|
{
|
|
auto result = canGetItem(index);
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
ASSERT(result.releaseReturnValue());
|
|
|
|
return at(index);
|
|
}
|
|
|
|
ExceptionOr<ItemType> initialize(ItemType&& newItem)
|
|
{
|
|
auto result = canAlterList();
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
|
|
// Spec: Clears all existing current items from the list.
|
|
clearItems();
|
|
|
|
auto item = append(WTFMove(newItem));
|
|
commitChange();
|
|
return item;
|
|
}
|
|
|
|
ExceptionOr<ItemType> insertItemBefore(ItemType&& newItem, unsigned index)
|
|
{
|
|
auto result = canAlterList();
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
ASSERT(result.releaseReturnValue());
|
|
|
|
// Spec: If the index is greater than or equal to numberOfItems,
|
|
// then the new item is appended to the end of the list.
|
|
if (index > numberOfItems())
|
|
index = numberOfItems();
|
|
|
|
auto item = insert(index, WTFMove(newItem));
|
|
commitChange();
|
|
return item;
|
|
}
|
|
|
|
ExceptionOr<ItemType> replaceItem(ItemType&& newItem, unsigned index)
|
|
{
|
|
auto result = canReplaceItem(index);
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
ASSERT(result.releaseReturnValue());
|
|
|
|
auto item = replace(index, WTFMove(newItem));
|
|
commitChange();
|
|
return item;
|
|
}
|
|
|
|
ExceptionOr<ItemType> removeItem(unsigned index)
|
|
{
|
|
auto result = canRemoveItem(index);
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
ASSERT(result.releaseReturnValue());
|
|
|
|
auto item = remove(index);
|
|
commitChange();
|
|
return item;
|
|
}
|
|
|
|
ExceptionOr<ItemType> appendItem(ItemType&& newItem)
|
|
{
|
|
auto result = canAlterList();
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
ASSERT(result.releaseReturnValue());
|
|
|
|
auto item = append(WTFMove(newItem));
|
|
commitChange();
|
|
return item;
|
|
}
|
|
|
|
ExceptionOr<void> setItem(unsigned index, ItemType&& newItem)
|
|
{
|
|
auto result = replaceItem(WTFMove(newItem), index);
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
return { };
|
|
}
|
|
|
|
// Parsers and animators need to have a direct access to the items.
|
|
Vector<ItemType>& items() { return m_items; }
|
|
const Vector<ItemType>& items() const { return m_items; }
|
|
size_t size() const { return m_items.size(); }
|
|
bool isEmpty() const { return m_items.isEmpty(); }
|
|
|
|
void clearItems()
|
|
{
|
|
detachItems();
|
|
m_items.clear();
|
|
}
|
|
|
|
protected:
|
|
using SVGProperty::SVGProperty;
|
|
|
|
ExceptionOr<bool> canAlterList() const
|
|
{
|
|
if (isReadOnly())
|
|
return Exception { NoModificationAllowedError };
|
|
return true;
|
|
}
|
|
|
|
ExceptionOr<bool> canGetItem(unsigned index)
|
|
{
|
|
if (index >= m_items.size())
|
|
return Exception { IndexSizeError };
|
|
return true;
|
|
}
|
|
|
|
ExceptionOr<bool> canReplaceItem(unsigned index)
|
|
{
|
|
auto result = canAlterList();
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
ASSERT(result.releaseReturnValue());
|
|
|
|
if (index >= m_items.size())
|
|
return Exception { IndexSizeError };
|
|
return true;
|
|
}
|
|
|
|
ExceptionOr<bool> canRemoveItem(unsigned index)
|
|
{
|
|
auto result = canAlterList();
|
|
if (result.hasException())
|
|
return result.releaseException();
|
|
ASSERT(result.releaseReturnValue());
|
|
|
|
if (index >= m_items.size())
|
|
return Exception { IndexSizeError };
|
|
return true;
|
|
}
|
|
|
|
virtual void detachItems() { }
|
|
virtual ItemType at(unsigned index) const = 0;
|
|
virtual ItemType insert(unsigned index, ItemType&&) = 0;
|
|
virtual ItemType replace(unsigned index, ItemType&&) = 0;
|
|
virtual ItemType remove(unsigned index) = 0;
|
|
virtual ItemType append(ItemType&&) = 0;
|
|
|
|
Vector<ItemType> m_items;
|
|
};
|
|
|
|
}
|