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/*
* Copyright (C) 2006, 2007, 2012 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 "RenderFileUploadControl.h"
#include "ElementShadow.h"
#include "FileList.h"
#include "Font.h"
#include "GraphicsContext.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "Icon.h"
#include "LocalizedStrings.h"
#include "PaintInfo.h"
#include "RenderButton.h"
#include "RenderText.h"
#include "RenderTheme.h"
#include "ShadowRoot.h"
#include "TextRun.h"
#include "VisiblePosition.h"
#include <math.h>
using namespace std;
namespace WebCore {
using namespace HTMLNames;
const int afterButtonSpacing = 4;
const int iconHeight = 16;
const int iconWidth = 16;
const int iconFilenameSpacing = 2;
const int defaultWidthNumChars = 34;
const int buttonShadowHeight = 2;
RenderFileUploadControl::RenderFileUploadControl(HTMLInputElement* input)
: RenderBlock(input)
, m_canReceiveDroppedFiles(input->canReceiveDroppedFiles())
{
}
RenderFileUploadControl::~RenderFileUploadControl()
{
}
bool RenderFileUploadControl::canBeReplacedWithInlineRunIn() const
{
return false;
}
void RenderFileUploadControl::updateFromElement()
{
HTMLInputElement* input = static_cast<HTMLInputElement*>(node());
ASSERT(input->isFileUpload());
if (HTMLInputElement* button = uploadButton()) {
bool newDisabled = !theme()->isEnabled(this);
// We should avoid to call HTMLFormControlElement::setDisabled() as
// possible because setAttribute() in setDisabled() can cause style
// recalculation, and HTMLFormControlElement::recalcStyle() calls
// updateFromElement() eventually.
if (button->disabled() != newDisabled)
button->setDisabled(newDisabled);
bool newCanReceiveDroppedFilesState = input->canReceiveDroppedFiles();
if (m_canReceiveDroppedFiles != newCanReceiveDroppedFilesState) {
m_canReceiveDroppedFiles = newCanReceiveDroppedFilesState;
button->setActive(newCanReceiveDroppedFilesState);
}
}
// This only supports clearing out the files, but that's OK because for
// security reasons that's the only change the DOM is allowed to make.
FileList* files = input->files();
ASSERT(files);
if (files && files->isEmpty())
repaint();
}
static int nodeWidth(Node* node)
{
return node ? node->renderBox()->pixelSnappedWidth() : 0;
}
int RenderFileUploadControl::maxFilenameWidth() const
{
HTMLInputElement* input = static_cast<HTMLInputElement*>(node());
return max(0, contentBoxRect().pixelSnappedWidth() - nodeWidth(uploadButton()) - afterButtonSpacing
- (input->icon() ? iconWidth + iconFilenameSpacing : 0));
}
void RenderFileUploadControl::paintObject(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (style()->visibility() != VISIBLE)
return;
// Push a clip.
GraphicsContextStateSaver stateSaver(*paintInfo.context, false);
if (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseChildBlockBackgrounds) {
IntRect clipRect = enclosingIntRect(LayoutRect(paintOffset.x() + borderLeft(), paintOffset.y() + borderTop(),
width() - borderLeft() - borderRight(), height() - borderBottom() - borderTop() + buttonShadowHeight));
if (clipRect.isEmpty())
return;
stateSaver.save();
paintInfo.context->clip(clipRect);
}
if (paintInfo.phase == PaintPhaseForeground) {
const String& displayedFilename = fileTextValue();
const Font& font = style()->font();
TextRun textRun = constructTextRun(this, font, displayedFilename, style(), TextRun::AllowTrailingExpansion, RespectDirection | RespectDirectionOverride);
textRun.disableRoundingHacks();
// Determine where the filename should be placed
LayoutUnit contentLeft = paintOffset.x() + borderLeft() + paddingLeft();
HTMLInputElement* button = uploadButton();
if (!button)
return;
HTMLInputElement* input = static_cast<HTMLInputElement*>(node());
LayoutUnit buttonWidth = nodeWidth(button);
LayoutUnit buttonAndIconWidth = buttonWidth + afterButtonSpacing
+ (input->icon() ? iconWidth + iconFilenameSpacing : 0);
LayoutUnit textX;
if (style()->isLeftToRightDirection())
textX = contentLeft + buttonAndIconWidth;
else
textX = contentLeft + contentWidth() - buttonAndIconWidth - font.width(textRun);
// We want to match the button's baseline
RenderButton* buttonRenderer = toRenderButton(button->renderer());
// FIXME: Make this work with transforms.
LayoutUnit textY = paintOffset.y() + buttonRenderer->baselinePosition(AlphabeticBaseline, true, HorizontalLine, PositionOnContainingLine);
paintInfo.context->setFillColor(style()->visitedDependentColor(CSSPropertyColor), style()->colorSpace());
// Draw the filename
paintInfo.context->drawBidiText(font, textRun, IntPoint(roundToInt(textX), roundToInt(textY)));
if (input->icon()) {
// Determine where the icon should be placed
LayoutUnit iconY = paintOffset.y() + borderTop() + paddingTop() + (contentHeight() - iconHeight) / 2;
LayoutUnit iconX;
if (style()->isLeftToRightDirection())
iconX = contentLeft + buttonWidth + afterButtonSpacing;
else
iconX = contentLeft + contentWidth() - buttonWidth - afterButtonSpacing - iconWidth;
// Draw the file icon
input->icon()->paint(paintInfo.context, IntRect(roundToInt(iconX), roundToInt(iconY), iconWidth, iconHeight));
}
}
// Paint the children.
RenderBlock::paintObject(paintInfo, paintOffset);
}
void RenderFileUploadControl::computePreferredLogicalWidths()
{
ASSERT(preferredLogicalWidthsDirty());
m_minPreferredLogicalWidth = 0;
m_maxPreferredLogicalWidth = 0;
RenderStyle* style = this->style();
ASSERT(style);
const Font& font = style->font();
if (style->width().isFixed() && style->width().value() > 0)
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = adjustContentBoxLogicalWidthForBoxSizing(style->width().value());
else {
// Figure out how big the filename space needs to be for a given number of characters
// (using "0" as the nominal character).
const UChar character = '0';
const String characterAsString = String(&character, 1);
float minDefaultLabelWidth = defaultWidthNumChars * font.width(constructTextRun(this, font, characterAsString, style, TextRun::AllowTrailingExpansion));
const String label = theme()->fileListDefaultLabel(node()->toInputElement()->multiple());
float defaultLabelWidth = font.width(constructTextRun(this, font, label, style, TextRun::AllowTrailingExpansion));
if (HTMLInputElement* button = uploadButton())
if (RenderObject* buttonRenderer = button->renderer())
defaultLabelWidth += buttonRenderer->maxPreferredLogicalWidth() + afterButtonSpacing;
m_maxPreferredLogicalWidth = static_cast<int>(ceilf(max(minDefaultLabelWidth, defaultLabelWidth)));
}
if (style->minWidth().isFixed() && style->minWidth().value() > 0) {
m_maxPreferredLogicalWidth = max(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style->minWidth().value()));
m_minPreferredLogicalWidth = max(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style->minWidth().value()));
} else if (style->width().isPercent() || (style->width().isAuto() && style->height().isPercent()))
m_minPreferredLogicalWidth = 0;
else
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth;
if (style->maxWidth().isFixed()) {
m_maxPreferredLogicalWidth = min(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style->maxWidth().value()));
m_minPreferredLogicalWidth = min(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style->maxWidth().value()));
}
int toAdd = borderAndPaddingWidth();
m_minPreferredLogicalWidth += toAdd;
m_maxPreferredLogicalWidth += toAdd;
setPreferredLogicalWidthsDirty(false);
}
VisiblePosition RenderFileUploadControl::positionForPoint(const LayoutPoint&)
{
return VisiblePosition();
}
HTMLInputElement* RenderFileUploadControl::uploadButton() const
{
HTMLInputElement* input = static_cast<HTMLInputElement*>(node());
ASSERT(input->shadow());
Node* buttonNode = input->shadow()->oldestShadowRoot()->firstChild();
return buttonNode && buttonNode->isHTMLElement() && buttonNode->hasTagName(inputTag) ? static_cast<HTMLInputElement*>(buttonNode) : 0;
}
String RenderFileUploadControl::buttonValue()
{
if (HTMLInputElement* button = uploadButton())
return button->value();
return String();
}
String RenderFileUploadControl::fileTextValue() const
{
HTMLInputElement* input = static_cast<HTMLInputElement*>(node());
ASSERT(input->files());
return theme()->fileListNameForWidth(input->files(), style()->font(), maxFilenameWidth(), input->multiple());
}
} // namespace WebCore
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