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/**
* Copyright (C) 2006, 2007, 2010 Apple Inc. All rights reserved.
* (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
*
* 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 "RenderTextControlSingleLine.h"
#include "CSSFontSelector.h"
#include "CSSValueKeywords.h"
#include "Font.h"
#include "Frame.h"
#include "FrameSelection.h"
#include "FrameView.h"
#include "HTMLNames.h"
#include "HitTestResult.h"
#include "LocalizedStrings.h"
#include "RenderLayer.h"
#include "RenderLayerScrollableArea.h"
#include "RenderScrollbar.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "StyleResolver.h"
#include "TextControlInnerElements.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/StackStats.h>
#if PLATFORM(IOS_FAMILY)
#include "RenderThemeIOS.h"
#endif
namespace WebCore {
using namespace HTMLNames;
WTF_MAKE_ISO_ALLOCATED_IMPL(RenderTextControlSingleLine);
WTF_MAKE_ISO_ALLOCATED_IMPL(RenderTextControlInnerBlock);
RenderTextControlSingleLine::RenderTextControlSingleLine(HTMLInputElement& element, RenderStyle&& style)
: RenderTextControl(element, WTFMove(style))
{
}
RenderTextControlSingleLine::~RenderTextControlSingleLine() = default;
inline HTMLElement* RenderTextControlSingleLine::innerSpinButtonElement() const
{
return inputElement().innerSpinButtonElement();
}
void RenderTextControlSingleLine::centerRenderer(RenderBox& renderer) const
{
LayoutUnit logicalHeightDiff = renderer.logicalHeight() - contentLogicalHeight();
renderer.setLogicalTop(renderer.logicalTop() - logicalHeightDiff / 2);
}
static void resetOverriddenHeight(RenderBox* box, const RenderObject* ancestor)
{
ASSERT(box != ancestor);
if (!box || box->style().logicalHeight().isAuto())
return; // Null box or its height was not overridden.
box->mutableStyle().setLogicalHeight(Length { LengthType::Auto });
for (RenderObject* renderer = box; renderer != ancestor; renderer = renderer->parent()) {
ASSERT(renderer);
renderer->setNeedsLayout(MarkOnlyThis);
}
}
void RenderTextControlSingleLine::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
// FIXME: We should remove the height-related hacks in layout() and
// styleDidChange(). We need them because we want to:
// - Center the inner elements vertically if the input height is taller than
// the intrinsic height of the inner elements.
// - Shrink the heights of the inner elements if the input height is smaller
// than the intrinsic heights of the inner elements.
// - Make the height of the container element equal to the intrinsic height of
// the inner elements when the field has a strong password button.
//
// We don't honor padding and borders for textfields without decorations
// and type=search if the text height is taller than the contentHeight()
// because of compability.
RenderTextControlInnerBlock* innerTextRenderer = innerTextElement()->renderer();
RenderBox* innerBlockRenderer = innerBlockElement() ? innerBlockElement()->renderBox() : nullptr;
HTMLElement* container = containerElement();
RenderBox* containerRenderer = container ? container->renderBox() : nullptr;
// To ensure consistency between layouts, we need to reset any conditionally overridden height.
resetOverriddenHeight(innerTextRenderer, this);
resetOverriddenHeight(innerBlockRenderer, this);
resetOverriddenHeight(containerRenderer, this);
// Save the old size of the inner text (if we have one) as we will need to layout the placeholder
// and update selection if it changes. One way the size may change is if text decorations are
// toggled. For example, hiding and showing the caps lock indicator will cause a size change.
LayoutSize oldInnerTextSize;
if (innerTextRenderer)
oldInnerTextSize = innerTextRenderer->size();
RenderBlockFlow::layoutBlock(false);
// Set the text block height
LayoutUnit desiredLogicalHeight = textBlockLogicalHeight();
LayoutUnit logicalHeightLimit = logicalHeight();
LayoutUnit innerTextLogicalHeight;
if (innerTextRenderer)
innerTextLogicalHeight = innerTextRenderer->logicalHeight();
if (innerTextRenderer && innerTextLogicalHeight > logicalHeightLimit) {
if (desiredLogicalHeight != innerTextLogicalHeight)
setNeedsLayout(MarkOnlyThis);
innerTextRenderer->mutableStyle().setLogicalHeight(Length(desiredLogicalHeight, LengthType::Fixed));
innerTextRenderer->setNeedsLayout(MarkOnlyThis);
if (innerBlockRenderer) {
innerBlockRenderer->mutableStyle().setLogicalHeight(Length(desiredLogicalHeight, LengthType::Fixed));
innerBlockRenderer->setNeedsLayout(MarkOnlyThis);
}
innerTextLogicalHeight = desiredLogicalHeight;
}
// The container might be taller because of decoration elements.
LayoutUnit oldContainerLogicalTop;
if (containerRenderer) {
containerRenderer->layoutIfNeeded();
oldContainerLogicalTop = containerRenderer->logicalTop();
LayoutUnit containerLogicalHeight = containerRenderer->logicalHeight();
if (inputElement().hasAutoFillStrongPasswordButton() && innerTextRenderer && containerLogicalHeight != innerTextLogicalHeight) {
containerRenderer->mutableStyle().setLogicalHeight(Length { innerTextLogicalHeight, LengthType::Fixed });
setNeedsLayout(MarkOnlyThis);
} else if (containerLogicalHeight > logicalHeightLimit) {
containerRenderer->mutableStyle().setLogicalHeight(Length(logicalHeightLimit, LengthType::Fixed));
setNeedsLayout(MarkOnlyThis);
} else if (containerRenderer->logicalHeight() < contentLogicalHeight()) {
containerRenderer->mutableStyle().setLogicalHeight(Length(contentLogicalHeight(), LengthType::Fixed));
setNeedsLayout(MarkOnlyThis);
} else
containerRenderer->mutableStyle().setLogicalHeight(Length(containerLogicalHeight, LengthType::Fixed));
}
// If we need another layout pass, we have changed one of children's height so we need to relayout them.
if (needsLayout())
RenderBlockFlow::layoutBlock(true);
// Fix up the y-position of the container as it may have been flexed when the strong password or strong
// confirmation password button wraps to the next line.
if (inputElement().hasAutoFillStrongPasswordButton() && containerRenderer)
containerRenderer->setLogicalTop(oldContainerLogicalTop);
// Center the child block in the block progression direction (vertical centering for horizontal text fields).
if (!container && innerTextRenderer && innerTextRenderer->height() != contentLogicalHeight())
centerRenderer(*innerTextRenderer);
else if (container && containerRenderer && containerRenderer->height() != contentLogicalHeight())
centerRenderer(*containerRenderer);
bool innerTextSizeChanged = innerTextRenderer && innerTextRenderer->size() != oldInnerTextSize;
HTMLElement* placeholderElement = inputElement().placeholderElement();
if (RenderBox* placeholderBox = placeholderElement ? placeholderElement->renderBox() : 0) {
auto innerTextWidth = LayoutUnit { };
if (innerTextRenderer)
innerTextWidth = innerTextRenderer->logicalWidth();
placeholderBox->mutableStyle().setWidth(Length(innerTextWidth - placeholderBox->horizontalBorderAndPaddingExtent(), LengthType::Fixed));
bool neededLayout = placeholderBox->needsLayout();
bool placeholderBoxHadLayout = placeholderBox->everHadLayout();
if (innerTextSizeChanged) {
// The caps lock indicator was hidden. Layout the placeholder. Its layout does not affect its parent.
placeholderBox->setChildNeedsLayout(MarkOnlyThis);
}
placeholderBox->layoutIfNeeded();
auto placeholderTopLeft = containerRenderer ? containerRenderer->location() : LayoutPoint { };
auto* innerBlockRenderer = innerBlockElement() ? innerBlockElement()->renderBox() : nullptr;
if (innerBlockRenderer)
placeholderTopLeft += toLayoutSize(innerBlockRenderer->location());
if (innerTextRenderer)
placeholderTopLeft += toLayoutSize(innerTextRenderer->location());
placeholderBox->setLogicalLeft(placeholderTopLeft.x());
// Here the container box indicates the renderer that the placeholder content is aligned with (no parent and/or containing block relationship).
auto* containerBox = innerTextRenderer ? innerTextRenderer : innerBlockRenderer ? innerBlockRenderer : containerRenderer;
if (containerBox) {
// Center vertical align the placeholder content.
auto logicalTop = placeholderTopLeft.y() + (containerBox->logicalHeight() / 2 - placeholderBox->logicalHeight() / 2);
placeholderBox->setLogicalTop(logicalTop);
}
if (!placeholderBoxHadLayout && placeholderBox->checkForRepaintDuringLayout()) {
// This assumes a shadow tree without floats. If floats are added, the
// logic should be shared with RenderBlock::layoutBlockChild.
placeholderBox->repaint();
}
// The placeholder gets layout last, after the parent text control and its other children,
// so in order to get the correct overflow from the placeholder we need to recompute it now.
if (neededLayout)
computeOverflow(clientLogicalBottom());
}
#if PLATFORM(IOS_FAMILY)
// FIXME: We should not be adjusting styles during layout. <rdar://problem/7675493>
if (inputElement().isSearchField())
RenderThemeIOS::adjustRoundBorderRadius(mutableStyle(), *this);
#endif
if (innerTextSizeChanged && frame().selection().isFocusedAndActive() && document().focusedElement() == &inputElement()) {
// The caps lock indicator was hidden or shown. If it is now visible then it may be occluding
// the current selection (say, the caret was after the last character in the text field).
// Schedule an update and reveal of the current selection.
frame().selection().setNeedsSelectionUpdate(FrameSelection::RevealSelectionAfterUpdate::Forced);
}
}
bool RenderTextControlSingleLine::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
{
if (!RenderTextControl::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, hitTestAction))
return false;
// Say that we hit the inner text element if
// - we hit a node inside the inner text element,
// - we hit the <input> element (e.g. we're over the border or padding), or
// - we hit regions not in any decoration buttons.
HTMLElement* container = containerElement();
if (result.innerNode()->isDescendantOf(innerTextElement().get()) || result.innerNode() == &inputElement() || (container && container == result.innerNode())) {
LayoutPoint pointInParent = locationInContainer.point();
if (container && innerBlockElement()) {
if (innerBlockElement()->renderBox())
pointInParent -= toLayoutSize(innerBlockElement()->renderBox()->location());
if (container->renderBox())
pointInParent -= toLayoutSize(container->renderBox()->location());
}
hitInnerTextElement(result, pointInParent, accumulatedOffset);
}
return true;
}
void RenderTextControlSingleLine::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderTextControl::styleDidChange(diff, oldStyle);
// We may have set the width and the height in the old style in layout().
// Reset them now to avoid getting a spurious layout hint.
HTMLElement* innerBlock = innerBlockElement();
if (auto* innerBlockRenderer = innerBlock ? innerBlock->renderer() : nullptr) {
innerBlockRenderer->mutableStyle().setHeight(Length());
innerBlockRenderer->mutableStyle().setWidth(Length());
}
HTMLElement* container = containerElement();
if (auto* containerRenderer = container ? container->renderer() : nullptr) {
containerRenderer->mutableStyle().setHeight(Length());
containerRenderer->mutableStyle().setWidth(Length());
}
if (diff == StyleDifference::Layout) {
if (auto innerTextRenderer = innerTextElement()->renderer())
innerTextRenderer->setNeedsLayout(MarkContainingBlockChain);
if (auto* placeholder = inputElement().placeholderElement()) {
if (placeholder->renderer())
placeholder->renderer()->setNeedsLayout(MarkContainingBlockChain);
}
}
setHasNonVisibleOverflow(false);
}
bool RenderTextControlSingleLine::hasControlClip() const
{
// Apply control clip for text fields with decorations.
return !!containerElement();
}
LayoutRect RenderTextControlSingleLine::controlClipRect(const LayoutPoint& additionalOffset) const
{
ASSERT(hasControlClip());
LayoutRect clipRect = contentBoxRect();
if (containerElement()->renderBox())
clipRect = unionRect(clipRect, containerElement()->renderBox()->frameRect());
clipRect.moveBy(additionalOffset);
return clipRect;
}
float RenderTextControlSingleLine::getAverageCharWidth()
{
#if !PLATFORM(IOS_FAMILY)
// Since Lucida Grande is the default font, we want this to match the width
// of MS Shell Dlg, the default font for textareas in Firefox, Safari Win and
// IE for some encodings (in IE, the default font is encoding specific).
// 901 is the avgCharWidth value in the OS/2 table for MS Shell Dlg.
if (style().fontCascade().firstFamily() == "Lucida Grande"_s)
return scaleEmToUnits(901);
#endif
return RenderTextControl::getAverageCharWidth();
}
LayoutUnit RenderTextControlSingleLine::preferredContentLogicalWidth(float charWidth) const
{
int factor = 0;
bool includesDecoration = inputElement().sizeShouldIncludeDecoration(factor);
if (factor <= 0)
factor = 20;
LayoutUnit result = LayoutUnit::fromFloatCeil(charWidth * factor);
float maxCharWidth = 0.f;
#if !PLATFORM(IOS_FAMILY)
const AtomString& family = style().fontCascade().firstFamily();
// Since Lucida Grande is the default font, we want this to match the width
// of MS Shell Dlg, the default font for textareas in Firefox, Safari Win and
// IE for some encodings (in IE, the default font is encoding specific).
// 4027 is the (xMax - xMin) value in the "head" font table for MS Shell Dlg.
if (family == "Lucida Grande"_s)
maxCharWidth = scaleEmToUnits(4027);
else if (style().fontCascade().hasValidAverageCharWidth())
maxCharWidth = roundf(style().fontCascade().primaryFont().maxCharWidth());
#endif
// For text inputs, IE adds some extra width.
if (maxCharWidth > 0.f)
result += maxCharWidth - charWidth;
if (includesDecoration)
result += inputElement().decorationWidth();
if (auto* innerRenderer = innerTextElement()->renderer())
result += innerRenderer->endPaddingWidthForCaret();
return result;
}
LayoutUnit RenderTextControlSingleLine::computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const
{
return lineHeight + nonContentHeight;
}
void RenderTextControlSingleLine::autoscroll(const IntPoint& position)
{
RenderTextControlInnerBlock* renderer = innerTextElement()->renderer();
if (!renderer)
return;
RenderLayer* layer = renderer->layer();
if (layer)
layer->autoscroll(position);
}
int RenderTextControlSingleLine::scrollWidth() const
{
if (auto innerTextElement = this->innerTextElement(); innerTextElement && innerTextElement->renderer())
return innerTextElement->renderer()->scrollWidth();
return RenderBlockFlow::scrollWidth();
}
int RenderTextControlSingleLine::scrollHeight() const
{
if (auto innerTextElement = this->innerTextElement(); innerTextElement && innerTextElement->renderer())
return innerTextElement->renderer()->scrollHeight();
return RenderBlockFlow::scrollHeight();
}
int RenderTextControlSingleLine::scrollLeft() const
{
if (auto innerTextElement = this->innerTextElement(); innerTextElement && innerTextElement->renderer())
return innerTextElement->renderer()->scrollLeft();
return RenderBlockFlow::scrollLeft();
}
int RenderTextControlSingleLine::scrollTop() const
{
if (auto innerTextElement = this->innerTextElement(); innerTextElement && innerTextElement->renderer())
return innerTextElement->renderer()->scrollTop();
return RenderBlockFlow::scrollTop();
}
void RenderTextControlSingleLine::setScrollLeft(int newLeft, const ScrollPositionChangeOptions&)
{
if (innerTextElement())
innerTextElement()->setScrollLeft(newLeft);
}
void RenderTextControlSingleLine::setScrollTop(int newTop, const ScrollPositionChangeOptions&)
{
if (innerTextElement())
innerTextElement()->setScrollTop(newTop);
}
bool RenderTextControlSingleLine::scroll(ScrollDirection direction, ScrollGranularity granularity, unsigned stepCount, Element** stopElement, RenderBox* startBox, const IntPoint& wheelEventAbsolutePoint)
{
auto* renderer = innerTextElement()->renderer();
if (!renderer)
return false;
auto* scrollableArea = renderer->layer() ? renderer->layer()->scrollableArea() : nullptr;
if (scrollableArea && scrollableArea->scroll(direction, granularity, stepCount))
return true;
return RenderBlockFlow::scroll(direction, granularity, stepCount, stopElement, startBox, wheelEventAbsolutePoint);
}
bool RenderTextControlSingleLine::logicalScroll(ScrollLogicalDirection direction, ScrollGranularity granularity, unsigned stepCount, Element** stopElement)
{
auto* layer = innerTextElement()->renderer()->layer();
auto* scrollableArea = layer ? layer->scrollableArea() : nullptr;
if (scrollableArea && scrollableArea->scroll(logicalToPhysical(direction, style().isHorizontalWritingMode(), style().isFlippedBlocksWritingMode()), granularity, stepCount))
return true;
return RenderBlockFlow::logicalScroll(direction, granularity, stepCount, stopElement);
}
HTMLInputElement& RenderTextControlSingleLine::inputElement() const
{
return downcast<HTMLInputElement>(RenderTextControl::textFormControlElement());
}
}