RenderFileUploadControl.cpp [plain text]
#include "config.h"
#include "RenderFileUploadControl.h"
#include "Chrome.h"
#include "FileList.h"
#include "Frame.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "LocalizedStrings.h"
#include "Page.h"
#include "RenderButton.h"
#include "RenderText.h"
#include "RenderTheme.h"
#include "RenderView.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;
class HTMLFileUploadInnerButtonElement : public HTMLInputElement {
public:
HTMLFileUploadInnerButtonElement(Document*, Node* shadowParent);
virtual bool isShadowNode() const { return true; }
virtual Node* shadowParentNode() { return m_shadowParent; }
private:
Node* m_shadowParent;
};
RenderFileUploadControl::RenderFileUploadControl(HTMLInputElement* input)
: RenderBlock(input)
, m_button(0)
{
FileList* list = input->files();
Vector<String> filenames;
unsigned length = list ? list->length() : 0;
for (unsigned i = 0; i < length; ++i)
filenames.append(list->item(i)->path());
}
RenderFileUploadControl::~RenderFileUploadControl()
{
if (m_button)
m_button->detach();
}
void RenderFileUploadControl::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBlock::styleDidChange(diff, oldStyle);
if (m_button)
m_button->renderer()->setStyle(createButtonStyle(style()));
setReplaced(isInline());
}
void RenderFileUploadControl::valueChanged()
{
HTMLInputElement* inputElement = static_cast<HTMLInputElement*>(node());
inputElement->dispatchFormControlChangeEvent();
repaint();
}
bool RenderFileUploadControl::allowsMultipleFiles()
{
HTMLInputElement* input = static_cast<HTMLInputElement*>(node());
return !input->getAttribute(multipleAttr).isNull();
}
String RenderFileUploadControl::acceptTypes()
{
return static_cast<HTMLInputElement*>(node())->accept();
}
void RenderFileUploadControl::click()
{
}
Chrome* RenderFileUploadControl::chrome() const
{
Frame* frame = node()->document()->frame();
if (!frame)
return 0;
Page* page = frame->page();
if (!page)
return 0;
return page->chrome();
}
void RenderFileUploadControl::updateFromElement()
{
HTMLInputElement* inputElement = static_cast<HTMLInputElement*>(node());
ASSERT(inputElement->inputType() == HTMLInputElement::FILE);
if (!m_button) {
m_button = new HTMLFileUploadInnerButtonElement(document(), inputElement);
m_button->setInputType("button");
m_button->setValue(fileButtonChooseFileLabel());
RefPtr<RenderStyle> buttonStyle = createButtonStyle(style());
RenderObject* renderer = m_button->createRenderer(renderArena(), buttonStyle.get());
m_button->setRenderer(renderer);
renderer->setStyle(buttonStyle.release());
renderer->updateFromElement();
m_button->setAttached();
m_button->setInDocument();
addChild(renderer);
}
m_button->setDisabled(!theme()->isEnabled(this));
}
int RenderFileUploadControl::maxFilenameWidth() const
{
return max(0, contentWidth() - m_button->renderBox()->width() - afterButtonSpacing);
}
PassRefPtr<RenderStyle> RenderFileUploadControl::createButtonStyle(const RenderStyle* parentStyle) const
{
RefPtr<RenderStyle> style = getCachedPseudoStyle(FILE_UPLOAD_BUTTON);
if (!style) {
style = RenderStyle::create();
if (parentStyle)
style->inheritFrom(parentStyle);
}
style->setWhiteSpace(NOWRAP);
return style.release();
}
void RenderFileUploadControl::paintObject(PaintInfo& paintInfo, int tx, int ty)
{
if (style()->visibility() != VISIBLE)
return;
RenderBlock::paintObject(paintInfo, tx, ty);
}
void RenderFileUploadControl::calcPrefWidths()
{
ASSERT(prefWidthsDirty());
m_minPrefWidth = 0;
m_maxPrefWidth = 0;
if (style()->width().isFixed() && style()->width().value() > 0)
m_minPrefWidth = m_maxPrefWidth = calcContentBoxWidth(style()->width().value());
else {
const UChar ch = '0';
float charWidth = style()->font().floatWidth(TextRun(&ch, 1, false, 0, 0, false, false, false));
m_maxPrefWidth = (int)ceilf(charWidth * defaultWidthNumChars);
}
if (style()->minWidth().isFixed() && style()->minWidth().value() > 0) {
m_maxPrefWidth = max(m_maxPrefWidth, calcContentBoxWidth(style()->minWidth().value()));
m_minPrefWidth = max(m_minPrefWidth, calcContentBoxWidth(style()->minWidth().value()));
} else if (style()->width().isPercent() || (style()->width().isAuto() && style()->height().isPercent()))
m_minPrefWidth = 0;
else
m_minPrefWidth = m_maxPrefWidth;
if (style()->maxWidth().isFixed() && style()->maxWidth().value() != undefinedLength) {
m_maxPrefWidth = min(m_maxPrefWidth, calcContentBoxWidth(style()->maxWidth().value()));
m_minPrefWidth = min(m_minPrefWidth, calcContentBoxWidth(style()->maxWidth().value()));
}
int toAdd = borderAndPaddingWidth();
m_minPrefWidth += toAdd;
m_maxPrefWidth += toAdd;
setPrefWidthsDirty(false);
}
String RenderFileUploadControl::buttonValue()
{
if (!m_button)
return String();
return m_button->value();
}
String RenderFileUploadControl::fileTextValue() const
{
return "";
}
HTMLFileUploadInnerButtonElement::HTMLFileUploadInnerButtonElement(Document* doc, Node* shadowParent)
: HTMLInputElement(inputTag, doc)
, m_shadowParent(shadowParent)
{
}
}