void RenderPartObject::layout()
{
ASSERT(needsLayout());
ASSERT(minMaxKnown());
FrameView* childFrameView = static_cast<FrameView*>(m_widget);
RenderView* childRoot = 0;
bool flatten = m_widget && element()->hasTagName(iframeTag) && element() && element()->document()->frame() &&
element()->document()->frame()->settings()->flatFrameSetLayoutEnabled() &&
(static_cast<HTMLIFrameElement*>(element())->scrollingMode() != ScrollBarAlwaysOff || !style()->width().isFixed() || !style()->height().isFixed()) &&
(childRoot = childFrameView ? static_cast<RenderView*>(childFrameView->frame()->renderer()) : 0);
if (flatten) {
if (!childRoot->minMaxKnown())
childRoot->calcMinMaxWidth();
calcWidth();
calcHeight();
bool scrolling = static_cast<HTMLIFrameElement*>(element())->scrollingMode() != ScrollBarAlwaysOff;
if (scrolling || !style()->width().isFixed())
m_width = max(m_width, childRoot->minWidth());
updateWidgetPosition();
do
childFrameView->layout();
while (childFrameView->layoutPending() || childRoot->needsLayout());
if (scrolling || !style()->height().isFixed())
m_height = max(m_height, childFrameView->contentsHeight());
if (scrolling || !style()->width().isFixed())
m_width = max(m_width, childFrameView->contentsWidth());
updateWidgetPosition();
ASSERT(!childFrameView->layoutPending());
ASSERT(!childRoot->needsLayout());
ASSERT(!childRoot->firstChild() || !childRoot->firstChild()->firstChild() || !childRoot->firstChild()->firstChild()->needsLayout());
} else {
calcWidth();
calcHeight();
RenderPart::layout();
}
setNeedsLayout(false);
}
bool FrameView::needsLayout() const
{
RenderView* renderView = this->renderView();
return layoutPending()
|| (renderView && renderView->needsLayout())
|| isSubtreeLayout();
}
bool FrameView::needsLayout() const
{
// It is possible that our document will not have a body yet. If this is the case,
// then we are not allowed to schedule layouts yet, so we won't be pending layout.
if (!m_frame)
return false;
RenderView* root = m_frame->contentRenderer();
Document * doc = m_frame->document();
// doc->hasChangedChild() condition can occur when using WebKit ObjC interface
return layoutPending() || (root && root->needsLayout()) || d->m_layoutRoot || (doc && doc->hasChangedChild()) || m_frame->needsReapplyStyles();
}
void RenderFrameBase::layoutWithFlattening(bool fixedWidth, bool fixedHeight)
{
FrameView* childFrameView = static_cast<FrameView*>(widget());
RenderView* childRoot = childFrameView ? static_cast<RenderView*>(childFrameView->frame()->contentRenderer()) : 0;
// Do not expand frames which has zero width or height
if (!width() || !height() || !childRoot) {
updateWidgetPosition();
if (childFrameView)
childFrameView->layout();
setNeedsLayout(false);
return;
}
// need to update to calculate min/max correctly
updateWidgetPosition();
if (childRoot->preferredLogicalWidthsDirty())
childRoot->computePreferredLogicalWidths();
// if scrollbars are off, and the width or height are fixed
// we obey them and do not expand. With frame flattening
// no subframe much ever become scrollable.
HTMLFrameElementBase* element = static_cast<HTMLFrameElementBase*>(node());
bool isScrollable = element->scrollingMode() != ScrollbarAlwaysOff;
// consider iframe inset border
int hBorder = borderLeft() + borderRight();
int vBorder = borderTop() + borderBottom();
// make sure minimum preferred width is enforced
if (isScrollable || !fixedWidth) {
setWidth(max(width(), childRoot->minPreferredLogicalWidth() + hBorder));
// update again to pass the new width to the child frame
updateWidgetPosition();
childFrameView->layout();
}
// expand the frame by setting frame height = content height
if (isScrollable || !fixedHeight || childRoot->isFrameSet())
setHeight(max(height(), childFrameView->contentsHeight() + vBorder));
if (isScrollable || !fixedWidth || childRoot->isFrameSet())
setWidth(max(width(), childFrameView->contentsWidth() + hBorder));
updateWidgetPosition();
ASSERT(!childFrameView->layoutPending());
ASSERT(!childRoot->needsLayout());
ASSERT(!childRoot->firstChild() || !childRoot->firstChild()->firstChild() || !childRoot->firstChild()->firstChild()->needsLayout());
setNeedsLayout(false);
}
void RenderFrameBase::layoutWithFlattening(bool hasFixedWidth, bool hasFixedHeight)
{
FrameView* childFrameView = toFrameView(widget());
RenderView* childRoot = childFrameView ? childFrameView->frame().contentRenderer() : 0;
if (!childRoot || !shouldExpandFrame(width(), height(), hasFixedWidth, hasFixedHeight)) {
updateWidgetPosition();
if (childFrameView)
childFrameView->layout();
clearNeedsLayout();
return;
}
// need to update to calculate min/max correctly
updateWidgetPosition();
// if scrollbars are off, and the width or height are fixed
// we obey them and do not expand. With frame flattening
// no subframe much ever become scrollable.
bool isScrollable = frameOwnerElement().scrollingMode() != ScrollbarAlwaysOff;
// consider iframe inset border
int hBorder = borderLeft() + borderRight();
int vBorder = borderTop() + borderBottom();
// make sure minimum preferred width is enforced
if (isScrollable || !hasFixedWidth) {
setWidth(std::max(width(), childRoot->minPreferredLogicalWidth() + hBorder));
// update again to pass the new width to the child frame
updateWidgetPosition();
childFrameView->layout();
}
// expand the frame by setting frame height = content height
if (isScrollable || !hasFixedHeight || childRoot->isFrameSet())
setHeight(std::max<LayoutUnit>(height(), childFrameView->contentsHeight() + vBorder));
if (isScrollable || !hasFixedWidth || childRoot->isFrameSet())
setWidth(std::max<LayoutUnit>(width(), childFrameView->contentsWidth() + hBorder));
updateWidgetPosition();
ASSERT(!childFrameView->layoutPending());
ASSERT(!childRoot->needsLayout());
ASSERT(!childRoot->firstChild() || !childRoot->firstChild()->firstChildSlow() || !childRoot->firstChild()->firstChildSlow()->needsLayout());
clearNeedsLayout();
}
void FrameView::scheduleRelayoutOfSubtree(RenderObject* relayoutRoot)
{
ASSERT(m_frame->view() == this);
if (!m_frame->document()->isActive())
return;
RenderView* renderView = this->renderView();
if (renderView && renderView->needsLayout()) {
if (relayoutRoot)
relayoutRoot->markContainingBlocksForLayout(false);
return;
}
if (layoutPending() || !m_layoutSchedulingEnabled) {
if (m_layoutSubtreeRoot != relayoutRoot) {
if (isObjectAncestorContainerOf(m_layoutSubtreeRoot, relayoutRoot)) {
// Keep the current root
relayoutRoot->markContainingBlocksForLayout(false, m_layoutSubtreeRoot);
ASSERT(!m_layoutSubtreeRoot->container() || !m_layoutSubtreeRoot->container()->needsLayout());
} else if (isSubtreeLayout() && isObjectAncestorContainerOf(relayoutRoot, m_layoutSubtreeRoot)) {
// Re-root at relayoutRoot
m_layoutSubtreeRoot->markContainingBlocksForLayout(false, relayoutRoot);
m_layoutSubtreeRoot = relayoutRoot;
ASSERT(!m_layoutSubtreeRoot->container() || !m_layoutSubtreeRoot->container()->needsLayout());
} else {
// Just do a full relayout
if (isSubtreeLayout())
m_layoutSubtreeRoot->markContainingBlocksForLayout(false);
m_layoutSubtreeRoot = 0;
relayoutRoot->markContainingBlocksForLayout(false);
}
}
} else if (m_layoutSchedulingEnabled) {
m_layoutSubtreeRoot = relayoutRoot;
ASSERT(!m_layoutSubtreeRoot->container() || !m_layoutSubtreeRoot->container()->needsLayout());
m_hasPendingLayout = true;
m_frame->document()->scheduleVisualUpdate();
}
}
void RenderIFrame::layoutSeamlessly()
{
updateLogicalWidth();
// FIXME: Containers set their height to 0 before laying out their kids (as we're doing here)
// however, this causes FrameView::layout() to add vertical scrollbars, incorrectly inflating
// the resulting contentHeight(). We'll need to make FrameView::layout() smarter.
setLogicalHeight(0);
updateWidgetPosition(); // Tell the Widget about our new width/height (it will also layout the child document).
// Laying out our kids is normally responsible for adjusting our height, so we set it here.
// Replaced elements normally do not respect padding, but seamless elements should: we'll add
// both padding and border to the child's logical height here.
FrameView* childFrameView = toFrameView(widget());
if (childFrameView) // Widget should never be null during layout(), but just in case.
setLogicalHeight(childFrameView->contentsHeight() + borderTop() + borderBottom() + paddingTop() + paddingBottom());
updateLogicalHeight();
updateWidgetPosition(); // Notify the Widget of our final height.
// Assert that the child document did a complete layout.
RenderView* childRoot = childFrameView ? childFrameView->frame()->contentRenderer() : 0;
ASSERT(!childFrameView || !childFrameView->layoutPending());
ASSERT_UNUSED(childRoot, !childRoot || !childRoot->needsLayout());
}
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.
//SAMSUNG CHANGE >>
// Browser freeze issue in http://www.enuri.com/
/* do {
view->layout();
} while (view->layoutPending() || root->needsLayout()); */
node()->document()->page()->mainFrame()->view()->layoutIfNeededRecursive();
//SAMSUNG CHANGE <<
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();
// Layout one more time to ensure all objects have the correct
// height.
view->layout();
#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);
}