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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Simon Hausmann <hausmann@kde.org>
* (C) 2000 Stefan Schimanski (1Stein@gmx.de)
* Copyright (C) 2004, 2005, 2006, 2008, 2009 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 "RenderPartObject.h"
#include "Frame.h"
#include "FrameLoaderClient.h"
#include "HTMLEmbedElement.h"
#include "HTMLIFrameElement.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"
#include "HTMLParamElement.h"
#include "MIMETypeRegistry.h"
#include "Page.h"
#include "RenderView.h"
#include "RenderWidgetProtector.h"
#include "Text.h"
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#include "HTMLVideoElement.h"
#endif
namespace WebCore {
using namespace HTMLNames;
RenderPartObject::RenderPartObject(Element* element)
: RenderPart(element)
{
}
void RenderPartObject::layout()
{
ASSERT(needsLayout());
#ifdef FLATTEN_IFRAME
RenderPart::calcWidth();
RenderPart::calcHeight();
// Calculate the styled dimensions by subtracting the border and padding.
int extraWidth = paddingLeft() + paddingRight() + borderLeft() + borderRight();
int extraHeight = paddingTop() + paddingBottom() + borderTop() + borderBottom();
int styleWidth = width() - extraWidth;
int styleHeight = height() - extraHeight;
// Some IFrames have a width and/or height of 1 when they are meant to be
// hidden. If that is the case, do not try to expand.
if (node()->hasTagName(iframeTag) && widget() && widget()->isFrameView() &&
styleWidth > 1 && styleHeight > 1) {
HTMLIFrameElement* element = static_cast<HTMLIFrameElement*>(node());
bool scrolling = element->scrollingMode() != ScrollbarAlwaysOff;
bool widthIsFixed = style()->width().isFixed();
bool heightIsFixed = style()->height().isFixed();
// If an iframe has a fixed dimension and suppresses scrollbars, it
// will disrupt layout if we force it to expand. Plus on a desktop,
// the extra content is not accessible.
if (scrolling || !widthIsFixed || !heightIsFixed) {
FrameView* view = static_cast<FrameView*>(widget());
RenderView* root = view ? view->frame()->contentRenderer() : NULL;
if (root && style()->visibility() != HIDDEN) {
// Update the dimensions to get the correct minimum preferred
// width
updateWidgetPosition();
// Use the preferred width if it is larger and only if
// scrollbars are visible or the width style is not fixed.
if (scrolling || !widthIsFixed)
setWidth(max(width(), root->minPrefWidth()) + extraWidth);
// Resize the view to recalc the height.
int h = height() - extraHeight;
int w = width() - extraWidth;
if (w > view->width())
h = 0;
if (w != view->width() || h != view->height()) {
view->resize(w, h);
}
// Layout the view.
do {
view->layout();
} while (view->layoutPending() || root->needsLayout());
int contentHeight = view->contentsHeight();
int contentWidth = view->contentsWidth();
// Only change the width or height if scrollbars are visible or
// if the style is not a fixed value. Use the maximum value so
// that iframes never shrink.
if (scrolling || !heightIsFixed)
setHeight(max(height(), contentHeight + extraHeight));
if (scrolling || !widthIsFixed)
setWidth(max(width(), contentWidth + extraWidth));
// Update one last time
updateWidgetPosition();
#if !ASSERT_DISABLED
ASSERT(!view->layoutPending());
ASSERT(!root->needsLayout());
// Sanity check when assertions are enabled.
RenderObject* c = root->nextInPreOrder();
while (c) {
ASSERT(!c->needsLayout());
c = c->nextInPreOrder();
}
#endif
}
}
}
#else
calcWidth();
calcHeight();
#endif
RenderPart::layout();
m_overflow.clear();
addShadowOverflow();
setNeedsLayout(false);
}
#ifdef FLATTEN_IFRAME
void RenderPartObject::calcWidth() {
RenderPart::calcWidth();
if (!node()->hasTagName(iframeTag) || !widget() || !widget()->isFrameView())
return;
FrameView* view = static_cast<FrameView*>(widget());
RenderView* root = static_cast<RenderView*>(view->frame()->contentRenderer());
if (!root)
return;
// Do not expand if the scrollbars are suppressed and the width is fixed.
bool scrolling = static_cast<HTMLIFrameElement*>(node())->scrollingMode() != ScrollbarAlwaysOff;
if (!scrolling && style()->width().isFixed())
return;
// Update the dimensions to get the correct minimum preferred
// width
updateWidgetPosition();
int extraWidth = paddingLeft() + paddingRight() + borderLeft() + borderRight();
// Set the width
setWidth(max(width(), root->minPrefWidth()) + extraWidth);
// Update based on the new width
updateWidgetPosition();
// Layout to get the content width
do {
view->layout();
} while (view->layoutPending() || root->needsLayout());
setWidth(max(width(), view->contentsWidth() + extraWidth));
// Update one last time to ensure the dimensions.
updateWidgetPosition();
}
void RenderPartObject::calcHeight() {
RenderPart::calcHeight();
if (!node()->hasTagName(iframeTag) || !widget() || !widget()->isFrameView())
return;
FrameView* view = static_cast<FrameView*>(widget());
RenderView* root = static_cast<RenderView*>(view->frame()->contentRenderer());
if (!root)
return;
// Do not expand if the scrollbars are suppressed and the height is fixed.
bool scrolling = static_cast<HTMLIFrameElement*>(node())->scrollingMode() != ScrollbarAlwaysOff;
if (!scrolling && style()->height().isFixed())
return;
// Update the widget
updateWidgetPosition();
// Layout to get the content height
do {
view->layout();
} while (view->layoutPending() || root->needsLayout());
int extraHeight = paddingTop() + paddingBottom() + borderTop() + borderBottom();
setHeight(max(width(), view->contentsHeight() + extraHeight));
// Update one last time to ensure the dimensions.
updateWidgetPosition();
}
#endif
void RenderPartObject::viewCleared()
{
if (node() && widget() && widget()->isFrameView()) {
FrameView* view = static_cast<FrameView*>(widget());
int marginw = -1;
int marginh = -1;
if (node()->hasTagName(iframeTag)) {
HTMLIFrameElement* frame = static_cast<HTMLIFrameElement*>(node());
marginw = frame->getMarginWidth();
marginh = frame->getMarginHeight();
}
if (marginw != -1)
view->setMarginWidth(marginw);
if (marginh != -1)
view->setMarginHeight(marginh);
}
}
}
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