--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/rendering/RenderFileUploadControl.cpp Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) 2006, 2007 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 "FrameView.h"
+#include "GraphicsContext.h"
+#include "HTMLInputElement.h"
+#include "HTMLNames.h"
+#include "Icon.h"
+#include "LocalizedStrings.h"
+#include "RenderButton.h"
+#include "RenderText.h"
+#include "RenderTheme.h"
+#include "RenderView.h"
+#include "TextStyle.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)
+ , m_fileChooser(FileChooser::create(this, input->value()))
+{
+}
+
+RenderFileUploadControl::~RenderFileUploadControl()
+{
+ if (m_button)
+ m_button->detach();
+ m_fileChooser->disconnectClient();
+}
+
+void RenderFileUploadControl::setStyle(RenderStyle* newStyle)
+{
+ // Force text-align to match the direction
+ if (newStyle->direction() == LTR)
+ newStyle->setTextAlign(LEFT);
+ else
+ newStyle->setTextAlign(RIGHT);
+
+ RenderBlock::setStyle(newStyle);
+ if (m_button)
+ m_button->renderer()->setStyle(createButtonStyle(newStyle));
+
+ setReplaced(isInline());
+}
+
+void RenderFileUploadControl::valueChanged()
+{
+ // onChange may destroy this renderer
+ RefPtr<FileChooser> fileChooser = m_fileChooser;
+
+ HTMLInputElement* inputElement = static_cast<HTMLInputElement*>(node());
+ inputElement->setValueFromRenderer(fileChooser->filename());
+ inputElement->onChange();
+
+ // only repaint if it doesn't seem we have been destroyed
+ if (!fileChooser->disconnected())
+ repaint();
+}
+
+void RenderFileUploadControl::click()
+{
+ m_fileChooser->openFileChooser(node()->document());
+}
+
+void RenderFileUploadControl::updateFromElement()
+{
+ HTMLInputElement* inputElement = static_cast<HTMLInputElement*>(node());
+
+ if (!m_button) {
+ m_button = new HTMLFileUploadInnerButtonElement(document(), inputElement);
+ m_button->setInputType("button");
+ m_button->setValue(fileButtonChooseFileLabel());
+ RenderStyle* buttonStyle = createButtonStyle(style());
+ RenderObject* renderer = m_button->createRenderer(renderArena(), buttonStyle);
+ m_button->setRenderer(renderer);
+ renderer->setStyle(buttonStyle);
+ renderer->updateFromElement();
+ m_button->setAttached();
+ m_button->setInDocument(true);
+
+ addChild(renderer);
+ }
+
+ m_button->setDisabled(!theme()->isEnabled(this));
+
+ // This only supports clearing out the filename, but that's OK because for
+ // security reasons that's the only change the DOM is allowed to make.
+ if (inputElement->value().isEmpty() && !m_fileChooser->filename().isEmpty()) {
+ m_fileChooser->clear();
+ repaint();
+ }
+}
+
+int RenderFileUploadControl::maxFilenameWidth() const
+{
+ return max(0, contentWidth() - m_button->renderer()->width() - afterButtonSpacing
+ - (m_fileChooser->icon() ? iconWidth + iconFilenameSpacing : 0));
+}
+
+RenderStyle* RenderFileUploadControl::createButtonStyle(RenderStyle* parentStyle) const
+{
+ RenderStyle* style = getPseudoStyle(RenderStyle::FILE_UPLOAD_BUTTON);
+ if (!style) {
+ style = new (renderArena()) RenderStyle;
+ if (parentStyle)
+ style->inheritFrom(parentStyle);
+ }
+
+ // Button text will wrap on file upload controls with widths smaller than the intrinsic button width
+ // without this setWhiteSpace.
+ style->setWhiteSpace(NOWRAP);
+
+ return style;
+}
+
+void RenderFileUploadControl::paintObject(PaintInfo& paintInfo, int tx, int ty)
+{
+ if (style()->visibility() != VISIBLE)
+ return;
+
+ // Push a clip.
+ if (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseChildBlockBackgrounds) {
+ IntRect clipRect(tx + borderLeft(), ty + borderTop(),
+ width() - borderLeft() - borderRight(), height() - borderBottom() - borderTop() + buttonShadowHeight);
+#if PLATFORM(SYMBIAN)
+ clipRect = intersection(clipRect, paintInfo.rect);
+#endif
+ if (clipRect.isEmpty())
+ return;
+ paintInfo.context->save();
+ paintInfo.context->clip(clipRect);
+ }
+
+ if (paintInfo.phase == PaintPhaseForeground) {
+ const String& displayedFilename = m_fileChooser->basenameForWidth(style()->font(), maxFilenameWidth());
+ unsigned length = displayedFilename.length();
+ const UChar* string = displayedFilename.characters();
+ TextStyle textStyle(0, 0, 0, style()->direction() == RTL, style()->unicodeBidi() == Override);
+ TextRun textRun(string, length);
+
+ // Determine where the filename should be placed
+ int contentLeft = tx + borderLeft() + paddingLeft();
+ int buttonAndIconWidth = m_button->renderer()->width() + afterButtonSpacing
+ + (m_fileChooser->icon() ? iconWidth + iconFilenameSpacing : 0);
+ int textX;
+ if (style()->direction() == LTR)
+ textX = contentLeft + buttonAndIconWidth;
+ else
+ textX = contentLeft + contentWidth() - buttonAndIconWidth - style()->font().width(textRun);
+ // We want to match the button's baseline
+ RenderButton* buttonRenderer = static_cast<RenderButton*>(m_button->renderer());
+ int textY = buttonRenderer->absoluteBoundingBoxRect().y()
+ + buttonRenderer->marginTop() + buttonRenderer->borderTop() + buttonRenderer->paddingTop()
+ + buttonRenderer->baselinePosition(true, false);
+
+ paintInfo.context->setFont(style()->font());
+ paintInfo.context->setFillColor(style()->color());
+
+ // Draw the filename
+ paintInfo.context->drawBidiText(textRun, IntPoint(textX, textY), textStyle);
+
+ if (m_fileChooser->icon()) {
+ // Determine where the icon should be placed
+ int iconY = ty + borderTop() + paddingTop() + (contentHeight() - iconHeight) / 2;
+ int iconX;
+ if (style()->direction() == LTR)
+ iconX = contentLeft + m_button->renderer()->width() + afterButtonSpacing;
+ else
+ iconX = contentLeft + contentWidth() - m_button->renderer()->width() - afterButtonSpacing - iconWidth;
+
+ // Draw the file icon
+ m_fileChooser->icon()->paint(paintInfo.context, IntRect(iconX, iconY, iconWidth, iconHeight));
+ }
+ }
+
+ // Paint the children.
+ RenderBlock::paintObject(paintInfo, tx, ty);
+
+ // Pop the clip.
+ if (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseChildBlockBackgrounds)
+ paintInfo.context->restore();
+}
+
+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 {
+ // Figure out how big the filename space needs to be for a given number of characters
+ // (using "0" as the nominal character).
+ const UChar ch = '0';
+ float charWidth = style()->font().floatWidth(TextRun(&ch, 1), TextStyle(0, 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 = paddingLeft() + paddingRight() + borderLeft() + borderRight();
+ m_minPrefWidth += toAdd;
+ m_maxPrefWidth += toAdd;
+
+ setPrefWidthsDirty(false);
+}
+
+void RenderFileUploadControl::receiveDroppedFile(const String& filename)
+{
+ m_fileChooser->chooseFile(filename);
+}
+
+HTMLFileUploadInnerButtonElement::HTMLFileUploadInnerButtonElement(Document* doc, Node* shadowParent)
+ : HTMLInputElement(doc)
+ , m_shadowParent(shadowParent)
+{
+}
+
+} // namespace WebCore