diff -up webkit-qtwebkit/Source/WebCore/page/ContextMenuController.cpp.type-cast webkit-qtwebkit/Source/WebCore/page/ContextMenuController.cpp
--- webkit-qtwebkit/Source/WebCore/page/ContextMenuController.cpp.type-cast	2011-05-12 16:42:28.000000000 +0200
+++ webkit-qtwebkit/Source/WebCore/page/ContextMenuController.cpp	2011-05-19 15:07:35.000000000 +0200
@@ -1050,6 +1050,11 @@ void ContextMenuController::checkOrEnabl
             shouldEnable = true;
             break;
 #endif
+#if PLATFORM(QT)
+        case ContextMenuItemTagSelectAll:
+            shouldEnable = true;
+            break;
+#endif
         case ContextMenuItemTagUnderline: {
             shouldCheck = frame->editor()->selectionHasStyle(CSSPropertyWebkitTextDecorationsInEffect, "underline") != FalseTriState;
             shouldEnable = frame->editor()->canEditRichly();
diff -up webkit-qtwebkit/Source/WebCore/platform/graphics/qt/FontPlatformDataQt.cpp.type-cast webkit-qtwebkit/Source/WebCore/platform/graphics/qt/FontPlatformDataQt.cpp
--- webkit-qtwebkit/Source/WebCore/platform/graphics/qt/FontPlatformDataQt.cpp.type-cast	2011-05-12 16:42:28.000000000 +0200
+++ webkit-qtwebkit/Source/WebCore/platform/graphics/qt/FontPlatformDataQt.cpp	2011-05-19 15:07:35.000000000 +0200
@@ -73,8 +73,9 @@ FontPlatformData::FontPlatformData(const
     font.setLetterSpacing(QFont::AbsoluteSpacing, letterSpacing);
     const bool smallCaps = description.smallCaps();
     font.setCapitalization(smallCaps ? QFont::SmallCaps : QFont::MixedCase);
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
     font.setStyleStrategy(QFont::ForceIntegerMetrics);
-
+#endif
     m_data->bold = font.bold();
     // WebKit allows font size zero but QFont does not. We will return
     // m_data->size if a font size of zero is requested and pixelSize()
diff -up webkit-qtwebkit/Source/WebCore/platform/graphics/qt/FontQt.cpp.type-cast webkit-qtwebkit/Source/WebCore/platform/graphics/qt/FontQt.cpp
--- webkit-qtwebkit/Source/WebCore/platform/graphics/qt/FontQt.cpp.type-cast	2011-05-12 16:42:28.000000000 +0200
+++ webkit-qtwebkit/Source/WebCore/platform/graphics/qt/FontQt.cpp	2011-05-19 15:07:35.000000000 +0200
@@ -186,17 +186,20 @@ static void drawTextCommon(GraphicsConte
             p->restore();
             return;
         }
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
         int skipWidth = QFontMetrics(font).width(string, from, Qt::TextBypassShaping);
         pt.setX(pt.x() + skipWidth);
         string = fromRawDataWithoutRef(sanitized, from, to - from);
+#endif
     }
 
     p->setFont(font);
 
     int flags = run.rtl() ? Qt::TextForceRightToLeft : Qt::TextForceLeftToRight;
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
     if (!isComplexText && !(ctx->textDrawingMode() & TextModeStroke))
         flags |= Qt::TextBypassShaping;
-
+#endif
     QPainterPath textStrokePath;
     if (ctx->textDrawingMode() & TextModeStroke)
         textStrokePath.addText(pt, font, string);
@@ -212,7 +215,11 @@ static void drawTextCommon(GraphicsConte
                 p->restore();
             } else {
                 QFontMetrics fm(font);
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
                 QRectF boundingRect(pt.x(), point.y() - fm.ascent(), fm.width(string, -1, flags), fm.height());
+#else
+                QRectF boundingRect(pt.x(), point.y() - fm.ascent(), fm.width(string, -1), fm.height());
+#endif
                 QPainter* shadowPainter = ctxShadow->beginShadowLayer(ctx, boundingRect);
                 if (shadowPainter) {
                     // Since it will be blurred anyway, we don't care about render hints.
@@ -229,7 +236,11 @@ static void drawTextCommon(GraphicsConte
                 p->translate(-ctxShadow->offset());
             } else {
                 QFontMetrics fm(font);
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
                 QRectF boundingRect(pt.x(), point.y() - fm.ascent(), fm.width(string, -1, flags), fm.height());
+#else
+                QRectF boundingRect(pt.x(), point.y() - fm.ascent(), fm.width(string, -1), fm.height());
+#endif
                 QPainter* shadowPainter = ctxShadow->beginShadowLayer(ctx, boundingRect);
                 if (shadowPainter) {
                     // Since it will be blurred anyway, we don't care about render hints.
@@ -254,7 +265,11 @@ static void drawTextCommon(GraphicsConte
 
 void Font::drawComplexText(GraphicsContext* ctx, const TextRun& run, const FloatPoint& point, int from, int to) const
 {
-    drawTextCommon(ctx, run, point, from, to, font(), /* isComplexText = */true);
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
+    drawTextCommon(ctx, run, point, from, to, font(), /* isComplexText = */false);
+#else
+    Q_ASSERT(false);
+#endif
 }
 
 float Font::floatWidthForComplexText(const TextRun& run, HashSet<const SimpleFontData*>*, GlyphOverflow*) const
@@ -402,6 +417,7 @@ int Font::offsetForPositionForSimpleText
 
 float Font::floatWidthForSimpleText(const TextRun& run, GlyphBuffer* glyphBuffer, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow* glyphOverflow) const
 {
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
     if (!primaryFont()->platformData().size())
         return 0;
 
@@ -418,11 +434,16 @@ float Font::floatWidthForSimpleText(cons
         w -= m_wordSpacing;
 
     return w + run.expansion();
+#else
+    Q_ASSERT(false);
+    return 0.0f;
+#endif
 }
 
 
 FloatRect Font::selectionRectForSimpleText(const TextRun& run, const FloatPoint& pt, int h, int from, int to) const
 {
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
     String sanitized = Font::normalizeSpaces(run.characters(), run.length());
     QString wholeText = fromRawDataWithoutRef(sanitized);
     QString selectedText = fromRawDataWithoutRef(sanitized, from, qMin(to - from, wholeText.length() - from));
@@ -431,6 +452,10 @@ FloatRect Font::selectionRectForSimpleTe
     int width = QFontMetrics(font()).width(selectedText, -1, Qt::TextBypassShaping);
 
     return FloatRect(pt.x() + startX, pt.y(), width, h);
+#else
+    Q_ASSERT(false);
+    return FloatRect();
+#endif
 }
 
 bool Font::canExpandAroundIdeographsInComplexText()
diff -up webkit-qtwebkit/Source/WebCore/platform/graphics/qt/ImageBufferQt.cpp.type-cast webkit-qtwebkit/Source/WebCore/platform/graphics/qt/ImageBufferQt.cpp
--- webkit-qtwebkit/Source/WebCore/platform/graphics/qt/ImageBufferQt.cpp.type-cast	2011-05-12 16:42:28.000000000 +0200
+++ webkit-qtwebkit/Source/WebCore/platform/graphics/qt/ImageBufferQt.cpp	2011-05-19 15:07:35.000000000 +0200
@@ -233,8 +233,11 @@ PassRefPtr<ByteArray> getImageData(const
     ASSERT(!image.isNull());
 
     const int bytesPerLine = image.bytesPerLine();
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
     const uchar* bits = image.constBits();
-
+#else
+    const uchar* bits = image.bits();
+#endif
     quint32* destRows = reinterpret_cast_ptr<quint32*>(&data[desty * rect.width() * 4 + destx * 4]);
 
     if (multiplied == Unmultiplied) {
diff -up webkit-qtwebkit/Source/WebCore/platform/graphics/qt/ImageDecoderQt.cpp.type-cast webkit-qtwebkit/Source/WebCore/platform/graphics/qt/ImageDecoderQt.cpp
--- webkit-qtwebkit/Source/WebCore/platform/graphics/qt/ImageDecoderQt.cpp.type-cast	2011-05-12 16:42:28.000000000 +0200
+++ webkit-qtwebkit/Source/WebCore/platform/graphics/qt/ImageDecoderQt.cpp	2011-05-19 15:07:35.000000000 +0200
@@ -194,8 +194,15 @@ void ImageDecoderQt::internalReadImage(s
 
 bool ImageDecoderQt::internalHandleCurrentImage(size_t frameIndex)
 {
-    QPixmap pixmap = QPixmap::fromImageReader(m_reader.get());
+    QPixmap pixmap;
 
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
+    pixmap = QPixmap::fromImageReader(m_reader.get());
+#else
+    QImage img;
+    if (m_reader->read(&img))
+        pixmap = QPixmap::fromImage(img);
+#endif
     if (pixmap.isNull()) {
         frameCount();
         repetitionCount();
diff -up webkit-qtwebkit/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp.type-cast webkit-qtwebkit/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp
--- webkit-qtwebkit/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp.type-cast	2011-05-12 16:42:28.000000000 +0200
+++ webkit-qtwebkit/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp	2011-05-19 15:07:35.000000000 +0200
@@ -362,8 +362,10 @@ String QNetworkReplyHandler::httpMethod(
         return "PUT";
     case QNetworkAccessManager::DeleteOperation:
         return "DELETE";
+#if QT_VERSION >= 0x040700
     case QNetworkAccessManager::CustomOperation:
         return m_resourceHandle->firstRequest().httpMethod();
+#endif
     default:
         ASSERT_NOT_REACHED();
         return "GET";
@@ -390,7 +392,11 @@ QNetworkReplyHandler::QNetworkReplyHandl
     else if (r.httpMethod() == "DELETE")
         m_method = QNetworkAccessManager::DeleteOperation;
     else
+#if QT_VERSION >= 0x040700
         m_method = QNetworkAccessManager::CustomOperation;
+#else
+        m_method = QNetworkAccessManager::UnknownOperation;
+#endif
 
     QObject* originatingObject = 0;
     if (m_resourceHandle->getInternal()->m_context)
@@ -511,10 +517,16 @@ void QNetworkReplyHandler::sendResponseI
         response.setHTTPStatusText(m_replyWrapper->reply()->attribute(QNetworkRequest::HttpReasonPhraseAttribute).toByteArray().constData());
 
         // Add remaining headers.
-        foreach (const QNetworkReply::RawHeaderPair& pair, m_replyWrapper->reply()->rawHeaderPairs())
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
+        foreach (const QNetworkReply::RawHeaderPair& pair, m_replyWrapper->reply()->rawHeaderPairs()) {
             response.setHTTPHeaderField(QString::fromLatin1(pair.first), QString::fromLatin1(pair.second));
+        }
+#else
+        foreach (const QByteArray& headerName, m_replyWrapper->reply()->rawHeaderList()) {
+            response.setHTTPHeaderField(QString::fromAscii(headerName), QString::fromAscii(m_replyWrapper->reply()->rawHeader(headerName)));
+        }
+#endif
     }
-
     QUrl redirection = m_replyWrapper->reply()->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl();
     if (redirection.isValid()) {
         redirect(response, redirection);
@@ -641,8 +653,10 @@ QNetworkReply* QNetworkReplyHandler::sen
         case QNetworkAccessManager::DeleteOperation: {
             return manager->deleteResource(m_request);
         }
+#if QT_VERSION >= 0x040700
         case QNetworkAccessManager::CustomOperation:
             return manager->sendCustomRequest(m_request, m_resourceHandle->firstRequest().httpMethod().latin1().data());
+#endif
         case QNetworkAccessManager::UnknownOperation:
             ASSERT_NOT_REACHED();
             return 0;
diff -up webkit-qtwebkit/Source/WebCore/platform/network/qt/ResourceRequestQt.cpp.type-cast webkit-qtwebkit/Source/WebCore/platform/network/qt/ResourceRequestQt.cpp
--- webkit-qtwebkit/Source/WebCore/platform/network/qt/ResourceRequestQt.cpp.type-cast	2011-05-12 16:42:28.000000000 +0200
+++ webkit-qtwebkit/Source/WebCore/platform/network/qt/ResourceRequestQt.cpp	2011-05-19 15:07:35.000000000 +0200
@@ -82,13 +82,13 @@ QNetworkRequest ResourceRequest::toNetwo
     default:
         break;
     }
-
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
     if (!allowCookies()) {
         request.setAttribute(QNetworkRequest::CookieLoadControlAttribute, QNetworkRequest::Manual);
         request.setAttribute(QNetworkRequest::CookieSaveControlAttribute, QNetworkRequest::Manual);
         request.setAttribute(QNetworkRequest::AuthenticationReuseAttribute, QNetworkRequest::Manual);
     }
-
+#endif
     return request;
 }
 
diff -up webkit-qtwebkit/Source/WebKit/qt/Api/qwebframe.cpp.type-casting webkit-qtwebkit/Source/WebKit/qt/Api/qwebframe.cpp
--- webkit-qtwebkit/Source/WebKit/qt/Api/qwebframe.cpp.type-casting	2011-05-24 09:55:43.000000000 +0200
+++ webkit-qtwebkit/Source/WebKit/qt/Api/qwebframe.cpp	2011-05-24 09:59:16.000000000 +0200
@@ -907,9 +907,11 @@ void QWebFrame::load(const QNetworkReque
         case QNetworkAccessManager::DeleteOperation:
             request.setHTTPMethod("DELETE");
             break;
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
         case QNetworkAccessManager::CustomOperation:
             request.setHTTPMethod(req.attribute(QNetworkRequest::CustomVerbAttribute).toByteArray().constData());
             break;
+#endif
         case QNetworkAccessManager::UnknownOperation:
             // eh?
             break;
diff -up webkit-qtwebkit/Source/WebKit/qt/Api/qwebsettings.cpp.type-casting webkit-qtwebkit/Source/WebKit/qt/Api/qwebsettings.cpp
--- webkit-qtwebkit/Source/WebKit/qt/Api/qwebsettings.cpp.type-casting	2011-05-24 09:46:59.000000000 +0200
+++ webkit-qtwebkit/Source/WebKit/qt/Api/qwebsettings.cpp	2011-05-24 09:53:45.000000000 +0200
@@ -480,16 +480,25 @@ QWebSettings::QWebSettings()
     d->fontFamilies.insert(QWebSettings::StandardFont, defaultFont.defaultFamily());
     d->fontFamilies.insert(QWebSettings::SerifFont, defaultFont.defaultFamily());
 
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
     defaultFont.setStyleHint(QFont::Fantasy);
     d->fontFamilies.insert(QWebSettings::FantasyFont, defaultFont.defaultFamily());
 
     defaultFont.setStyleHint(QFont::Cursive);
     d->fontFamilies.insert(QWebSettings::CursiveFont, defaultFont.defaultFamily());
+#else
+    d->fontFamilies.insert(QWebSettings::FantasyFont, defaultFont.defaultFamily());
+    d->fontFamilies.insert(QWebSettings::CursiveFont, defaultFont.defaultFamily());
+#endif
 
     defaultFont.setStyleHint(QFont::SansSerif);
     d->fontFamilies.insert(QWebSettings::SansSerifFont, defaultFont.defaultFamily());
 
+#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
     defaultFont.setStyleHint(QFont::Monospace);
+#else
+    defaultFont.setStyleHint(QFont::TypeWriter);
+#endif
     d->fontFamilies.insert(QWebSettings::FixedFont, defaultFont.defaultFamily());
 
     d->attributes.insert(QWebSettings::AutoLoadImages, true);