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/*
* This source file is part of libRocket, the HTML/CSS Interface Middleware
*
* For the latest information, see http://www.librocket.com
*
* Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "precompiled.h"
#include "StyleSheetNodeSelectorFirstChild.h"
#include "../../Include/Rocket/Core/ElementText.h"
#include "../../Include/Rocket/Core/StyleSheetKeywords.h"
namespace Rocket {
namespace Core {
StyleSheetNodeSelectorFirstChild::StyleSheetNodeSelectorFirstChild()
{
}
StyleSheetNodeSelectorFirstChild::~StyleSheetNodeSelectorFirstChild()
{
}
// Returns true if the element is the first DOM child in its parent.
bool StyleSheetNodeSelectorFirstChild::IsApplicable(const Element* element, int ROCKET_UNUSED_PARAMETER(a), int ROCKET_UNUSED_PARAMETER(b))
{
ROCKET_UNUSED(a);
ROCKET_UNUSED(b);
Element* parent = element->GetParentNode();
if (parent == NULL)
return false;
int child_index = 0;
while (child_index < parent->GetNumChildren())
{
// If this child (the first non-text child) is our element, then the selector succeeds.
Element* child = parent->GetChild(child_index);
if (child == element)
return true;
// If this child is not a text element, then the selector fails; this element is non-trivial.
if (dynamic_cast< ElementText* >(child) == NULL &&
child->GetDisplay() != DISPLAY_NONE)
return false;
// Otherwise, skip over the text element to find the last non-trivial element.
child_index++;
}
return false;
}
}
}
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