From cad810f21b803229eb11403f9209855525a25d57 Mon Sep 17 00:00:00 2001
From: Steve Block <steveblock@google.com>
Date: Fri, 6 May 2011 11:45:16 +0100
Subject: Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
---
 Source/WebCore/rendering/ShadowElement.cpp | 121 +++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 Source/WebCore/rendering/ShadowElement.cpp

(limited to 'Source/WebCore/rendering/ShadowElement.cpp')

diff --git a/Source/WebCore/rendering/ShadowElement.cpp b/Source/WebCore/rendering/ShadowElement.cpp
new file mode 100644
index 0000000..e1b247c
--- /dev/null
+++ b/Source/WebCore/rendering/ShadowElement.cpp
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "ShadowElement.h"
+
+#include "HTMLNames.h"
+#include "RenderTheme.h"
+#include "RenderView.h"
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+PassRefPtr<ShadowBlockElement> ShadowBlockElement::create(HTMLElement* shadowParent)
+{
+    return adoptRef(new ShadowBlockElement(shadowParent));
+}
+
+ShadowBlockElement::ShadowBlockElement(HTMLElement* shadowParent)
+    : ShadowElement<HTMLDivElement>(divTag, shadowParent)
+{
+}
+
+void ShadowBlockElement::layoutAsPart(const IntRect& partRect)
+{
+    RenderBox* parentRenderer = toRenderBox(renderer()->parent());
+    RenderBox* selfRenderer = toRenderBox(renderer());
+    IntRect oldRect = selfRenderer->frameRect();
+
+    LayoutStateMaintainer statePusher(parentRenderer->view(), parentRenderer, parentRenderer->size(), parentRenderer->style()->isFlippedBlocksWritingMode());
+
+    if (oldRect.size() != partRect.size())
+        selfRenderer->setChildNeedsLayout(true, false);
+
+    selfRenderer->layoutIfNeeded();
+    selfRenderer->setFrameRect(partRect);
+
+    if (selfRenderer->checkForRepaintDuringLayout())
+        selfRenderer->repaintDuringLayoutIfMoved(oldRect);
+        
+    statePusher.pop();
+    parentRenderer->addOverflowFromChild(selfRenderer);
+}
+
+void ShadowBlockElement::updateStyleForPart(PseudoId pseudoId)
+{
+    if (renderer()->style()->styleType() != pseudoId)
+        renderer()->setStyle(createStyleForPart(renderer()->parent(), pseudoId));
+}
+
+PassRefPtr<ShadowBlockElement> ShadowBlockElement::createForPart(HTMLElement* shadowParent, PseudoId pseudoId)
+{
+    RefPtr<ShadowBlockElement> part = create(shadowParent);
+    part->initAsPart(pseudoId);
+    return part.release();
+}
+
+void ShadowBlockElement::initAsPart(PseudoId pseudoId)
+{
+    RenderObject* parentRenderer = shadowHost()->renderer();
+    RefPtr<RenderStyle> styleForPart = createStyleForPart(parentRenderer, pseudoId);
+    setRenderer(createRenderer(parentRenderer->renderArena(), styleForPart.get()));
+    renderer()->setStyle(styleForPart.release());
+    setAttached();
+    setInDocument();
+}
+
+PassRefPtr<RenderStyle> ShadowBlockElement::createStyleForPart(RenderObject* parentRenderer, PseudoId pseudoId)
+{
+    RefPtr<RenderStyle> styleForPart;
+    RenderStyle* pseudoStyle = parentRenderer->getCachedPseudoStyle(pseudoId);
+    if (pseudoStyle)
+        styleForPart = RenderStyle::clone(pseudoStyle);
+    else
+        styleForPart = RenderStyle::create();
+    
+    styleForPart->inheritFrom(parentRenderer->style());
+    styleForPart->setDisplay(BLOCK);
+    styleForPart->setAppearance(NoControlPart);
+    return styleForPart.release();
+}
+
+bool ShadowBlockElement::partShouldHaveStyle(const RenderObject* parentRenderer, PseudoId pseudoId)
+{
+    // We have some -webkit-appearance values for default styles of parts and
+    // that appearance get turned off during RenderStyle creation 
+    // if they have background styles specified.
+    // So !hasAppearance() implies that there are something to be styled.
+    RenderStyle* pseudoStyle = parentRenderer->getCachedPseudoStyle(pseudoId);
+    return !(pseudoStyle && pseudoStyle->hasAppearance());
+}
+
+PassRefPtr<ShadowInputElement> ShadowInputElement::create(HTMLElement* shadowParent)
+{
+    return adoptRef(new ShadowInputElement(shadowParent));
+}
+
+ShadowInputElement::ShadowInputElement(HTMLElement* shadowParent)
+    : ShadowElement<HTMLInputElement>(inputTag, shadowParent)
+{
+}
+
+} // namespace WebCore
-- 
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