2006-05-10  Matt Gough  <matt@softchaos.com>

        Reviewed, tweaked, and landed by Darin.

        Optimization of [DOMNode _nodeWith:] to look up the obj-c wrapperClass

        for each HTMLElement using a HashMap instead of by repeated calls to

        htmlElt->hasLocalName(someTag). 

        * bindings/objc/DOM.mm:

        (addElementClass): Added.

        (createHTMLElementClassMap):

        (elementClass):

        (+[DOMNode _nodeWith:]): Added code to call elementClass.

2006-05-09  Mitz Pettel  <opendarwin.org@mitzpettel.com>

        Reviewed by Hyatt.

        - fix http://bugs.webkit.org/show_bug.cgi?id=8760

          crash (hang?) on subtlegradient.com article page

        * manual-tests/first-line-style-crash.html: Added.

        * css/cssstyleselector.cpp:

        (WebCore::CSSStyleSelector::createStyleForElement): Changed to not return the

        shared styleNotYetAvailable if allowSharing is off.

        * rendering/RenderObject.cpp:

        (WebCore::RenderObject::getPseudoStyle): In the FIRST_LINE_INHERITED case,

        set the styleType on the style returned from createStyleForElement().

        * rendering/render_style.h:

        (WebCore::RenderStyle::setStyleType): Added. Called from RenderObject::getPseudoStyle().

2006-05-09  Mitz Pettel  <opendarwin.org@mitzpettel.com>

        Reviewed by Hyatt.

        - fix http://bugs.webkit.org/show_bug.cgi?id=8789

          RenderStyle::getPseudoStyle() always returns 0

        No test possible (no functionality change).

        * dom/Node.cpp:

        (WebCore::Node::diff): When checking if :before or :after has changed,

        return NoInherit unless both pseudoStyles are known and equal.

        * rendering/render_style.cpp:

        (WebCore::RenderStyle::getPseudoStyle): Fixed to match the requested

        type against the pseudoStyle's styleType instead of our own.

2006-05-09  Darin Adler  <darin@apple.com>

        - another attempt to fix the Windows build

        * bindings/js/kjs_window.cpp: (KJS::isSeparator): Take a UChar, not a KJS::UChar.

        * bridge/win/FrameWin.cpp:

        (WebCore::FrameWin::runJavaScriptAlert): Use UChar instead of QChar.

        (WebCore::FrameWin::runJavaScriptConfirm): Ditto.

        * editing/TextIterator.h: Include DeprecatedString.h.

2006-05-09  Darin Adler  <darin@apple.com>

        Reviewed by Hyatt.

        - fix http://bugs.webkit.org/show_bug.cgi?id=8781

          REGRESSION: image maps with "poly" areas, including one at lisp.geek.nz, don't work

        * html/html_imageimpl.cpp: (WebCore::HTMLAreaElement::getRegion): Remove extra Path

        definition that was shadowing the real one.

2006-05-09  Darin Adler  <darin@apple.com>

        - fix build

        * rendering/render_style.cpp: (WebCore::RenderStyle::getPseudoStyle):

        Fix a typo.

        - attempt to fix Windows build

        * css/maketokenizer: Use UChar instead of unsigned short.

        * platform/win/FontWin.cpp:

        (WebCore::getFontData): Removed cast to QChar.

        (WebCore::hackishExtentForString): Use UChar.

        (WebCore::Font::floatWidth): Use UChar.

        (WebCore::Font::drawText): Use UChar.

        (WebCore::Font::drawHighlightForText): Use UChar.

        (WebCore::Font::selectionRectForText): Use UChar.

        (WebCore::Font::checkSelectionPoint): Use UChar.

        * platform/win/KeyEventWin.cpp:

        (WebCore::singleCharacterString): Added.

        (WebCore::PlatformKeyboardEvent::PlatformKeyboardEvent): Use above function.

        * platform/win/TemporaryLinkStubs.cpp:

        (WebCore::findNextSentenceFromIndex): Use UChar.

        (WebCore::findSentenceBoundary): Use UChar.

        (WebCore::findNextWordFromIndex): Use UChar.

        (WebCore::findWordBoundary): Use UChar.

        * platform/win/TransferJobWin.cpp:

        (WebCore::TransferJob::start): Use a different String constructor.

        * rendering/RenderTable.h: Added an include of DeprecatedArray.h.

        * rendering/RenderText.cpp: Added an include of DeprecatedString.h.

        * rendering/render_list.h: Ditto.

2006-05-09  Darin Adler  <darin@apple.com>

        Rubber stamped by Hyatt.

        - http://bugs.webkit.org/show_bug.cgi?id=8782

          use ICU and UChar more, QChar less

        - fix http://bugs.webkit.org/show_bug.cgi?id=6310

          text-transform: uppercase/lowercase don't handle cases one character becomes two

        Test: fast/css/case-transform.html

        By using ICU more, this fixes some bugs in a few places.

        * bindings/js/JSXMLSerializer.cpp:

        * css/css_valueimpl.h:

        * kwq/KWQTextStream.cpp:

        * loader/CachedObject.h:

        * platform/Color.cpp:

        Add includes of DeprecatedString.h as needed, now that StringImpl.h no longer

        includes it.

        * bindings/js/kjs_css.cpp: (KJS::cssPropertyName):

        Eliminate use of QChar::latin1() in a case where it's not helpful.

        * bindings/js/kjs_proxy.cpp: (WebCore::KJSProxy::evaluate):

        Use characters() function instead of the old unicode() function.

        * bindings/js/kjs_window.cpp: (KJS::isSeparator):

        Use UChar instead of QChar.

        * bindings/objc/DOMInternal.mm:

        (StringImpl::operator NSString*): Remove typecast that's no longer needed.

        (String::String): Ditto. Also use Vector for local buffer to make code read simpler.

        * bridge/mac/FrameMac.mm:

        (WebCore::selectorForKeyEvent): Remove call to unicode() function, no longer needed.

        (WebCore::FrameMac::setTitle): Remove QChar cast, no longer needed.

        (WebCore::FrameMac::setStatusBarText): Ditto.

        (WebCore::FrameMac::advanceToNextMisspelling): Use UChar instead of QChar.

        (WebCore::FrameMac::runJavaScriptAlert): Remove QChar cast, no longer needed.

        (WebCore::FrameMac::runJavaScriptConfirm): Ditto.

        (WebCore::FrameMac::runJavaScriptPrompt): Ditto.

        (WebCore::FrameMac::attributedString): Replaces calls of QChar::direction() with

        calls to u_charDirection and use ICU constants instead of QChar ones.

        (WebCore::FrameMac::markMisspellings): Remove QChar cast, no longer needed. Added a

        QChar cast so we can call isSpace -- slated to be removed later.

        (WebCore::FrameMac::shouldClose): Remove QChar cast, no longer needed.

        * bridge/mac/WebCoreFrameBridge.mm:

        (-[WebCoreFrameBridge selectedString]): Remove QChar cast, no longer needed.

        (-[WebCoreFrameBridge stringForRange:]): Ditto.

        * css/CSSGrammar.y: Update for field name change from string to characters.

        Use UChar instead of unsigned short. 

        * css/css_valueimpl.cpp:

        (WebCore::propertyID): Use UChar instead of unsigned short and get rid of call to

        unicode() function, no longer needed.

        (WebCore::quoteStringIfNeeded): Use strings when building up a resulting string,

        instead of depending on the feature where you can append characters to a string.

        * css/csshelper.cpp: (WebCore::parseURL): Remove calls to unicode() function and

        rewrite to obviate the need to call lower() just to check for a few constant

        character values. Also remove a now-unneeded type cast.

        * css/cssparser.h: Changed ParseString field to use UChar and to be named characters

        instead of string. Changed many other fields to be UChar instead of unsigned short.

        (WebCore::domString): Update for that.

        (WebCore::atomicString): Ditto.

        * css/cssparser.cpp:

        (WebCore::ParseString::lower): Use u_tolower instead of QChar::lower(). Also change

        name to characters from string.

        (WebCore::CSSParser::setupParser): Use UChar instead of unsigned short.

        (WebCore::CSSParser::lex): Ditto. Also update for characters name change.

        (WebCore::CSSParser::text): Use UChar instead of unsigned short. Also tweak some

        of the code a little bit to handle a couple of overflow cases better and reduce

        type casting.

        (WebCore::deprecatedString): Moved here so we don't have to include DeprecatedString.h

        in the header file.

        * css/cssstyleselector.cpp: (WebCore::checkPseudoState): Added a type cast since this

        code now bridges the world between modern code and QChar/DeprecatedString.

        * dom/CharacterData.cpp: (WebCore::CharacterData::CharacterData): Changed QChar to UChar.

        * dom/Document.h:

        * dom/Document.cpp:

        (WebCore::Document::isValidName): Updated for name change from unicode to characters.

        (WebCore::Document::parseQualifiedName): Ditto.

        (WebCore::Document::backslashAsCurrencySymbol): Changed return type to UChar.

        * dom/NamedMappedAttrMap.cpp:

        (WebCore::isClassWhitespace): Changed parameter to UChar from QChar.

        (WebCore::NamedMappedAttrMap::parseClassAttribute): Changed from UChar to QChar and

        from unicode to characters.

        * dom/Position.cpp:

        (WebCore::Position::leadingWhitespacePosition): Changed from QChar to UChar.

        (WebCore::Position::trailingWhitespacePosition): Ditto.

        * dom/StyledElement.cpp:

        (WebCore::isClassWhitespace): Changed from QChar to UChar.

        (WebCore::StyledElement::addCSSLength): Changed from QChar to UChar, and remove one

        case where latin1() was used and was not helpful.

        (WebCore::StyledElement::addCSSColor): Removed unicode() function call, no longer needed.

        * dom/dom2_eventsimpl.cpp: (WebCore::KeyboardEvent::charCode):

        * html/HTMLInputElement.cpp: (WebCore::HTMLInputElement::constrainValue):

        Removed unicode() function call, no longer needed.

        * dom/xml_tokenizer.h: Removed default parameter for xmlDocPtrForString so we don't have

        to include the DeprecatedString.h header in this file (and since no one uses it).

        * editing/HTMLInterchange.cpp: (convertHTMLTextToInterchangeFormat): Added a couple calls

        to the unicode() function to bridge the gap from QChar/DeprecatedString back to modern

        code.

        * editing/InsertTextCommand.cpp: Removed unused function.

        * editing/TextIterator.h: Changed from QChar to UChar.

        * editing/TextIterator.cpp:

        (WebCore::TextIterator::TextIterator): Initialize m_lastCharacter since it's now a UChar

        (which is just a typedef) rather than a QChar (which was a class with a default value of 0).

        (WebCore::TextIterator::handleTextNode): Updated to use characters() instead of unicode().

        (WebCore::TextIterator::handleTextBox): Removed unicode() call since it's now a UChar instead

        of a QChar.

        (WebCore::TextIterator::emitCharacter): More of the same.

        (WebCore::SimplifiedBackwardsTextIterator::handleTextNode): Ditto.

        (WebCore::SimplifiedBackwardsTextIterator::emitCharacter): Ditto.

        (WebCore::CharacterIterator::string): Ditto.

        (WebCore::WordAwareIterator::advance): Ditto.

        (WebCore::WordAwareIterator::length): Ditto.

        (WebCore::WordAwareIterator::characters): Ditto.

        (WebCore::CircularSearchBuffer::CircularSearchBuffer): Changed to use UChar

        instead of QChar, but also to use foldCase() instead of lower(), because

        we want case folding here, not lowercasing.

        (WebCore::CircularSearchBuffer::append): Ditto, with u_foldCase.

        (WebCore::CircularSearchBuffer::isMatch): Ditto.

        (WebCore::plainText): Added type cast since this bridges the gap from the modern stuff

        to QChar/DeprecatedString.

        * editing/VisiblePosition.h: Changed from QChar to UChar.

        * editing/VisiblePosition.cpp: (WebCore::VisiblePosition::characterAfter): Ditto.

        * editing/markup.cpp: (WebCore::escapeTextForMarkup): Changed code that used latin1()

        for no good reason to use unicode() instead.

        * html/HTMLTokenizer.h: Changed from QChar to UChar.

        * html/HTMLTokenizer.cpp: Changed from QChar to UChar, including removing the

        KHTML_ALLOC_QCHAR_VEC and KHTML_DELETE_QCHAR_VEC macros, which weren't being

        used consistently anyway.

        (WebCore::fixUpChar): More of the same.

        (WebCore::tagMatch): Ditto.

        (WebCore::HTMLTokenizer::reset): Ditto.

        (WebCore::HTMLTokenizer::begin): Ditto. Also corrected anomaly where buffer

        size was not the same as the size value -- this was only true in the initial

        allocation, so I believe there was no value in it.

        (WebCore::HTMLTokenizer::parseSpecial): Ditto. Also removed a use of latin1()

        that was unnnecessary extra work.

        (WebCore::HTMLTokenizer::scriptHandler): More of the same.

        (WebCore::HTMLTokenizer::parseComment): Ditto.

        (WebCore::HTMLTokenizer::parseServer): Ditto.

        (WebCore::HTMLTokenizer::parseProcessingInstruction): Ditto. Another unnecessary

        use of latin1() removed.

        (WebCore::HTMLTokenizer::parseText): Ditto.

        (WebCore::HTMLTokenizer::parseEntity): Ditto. Changed hex-parsing code to handle

        uppercase hex a more-efficient way than calling QChar::lower() on each character.

        Also changed surrogate code logic to fix a couple things -- reject character codes

        > 0x10FFFF as it should and use U16_LEAD and U16_TRAIL instead of writing our

        own versions of these.

        (WebCore::HTMLTokenizer::parseTag): Ditto.

        (WebCore::HTMLTokenizer::write): Ditto.

        (WebCore::HTMLTokenizer::end): Ditto.

        (WebCore::HTMLTokenizer::finish): Ditto.

        (WebCore::HTMLTokenizer::enlargeBuffer): Ditto.

        (WebCore::HTMLTokenizer::enlargeScriptBuffer): Ditto.

        (WebCore::HTMLTokenizer::notifyFinished):

        (WebCore::decodeNamedEntity): Ditto.

        * html/html_inlineimpl.cpp: (WebCore::parseFontSizeNumber): Changed from QChar

        to UChar, including using u_isdigit and u_charDigitValue instead of QChar::isNumber

        and QChar::digitValue. Also removed unneeded range checking that's already done

        by WebCore::String.

        * kwq/KWQLoader.mm: (KWQIsResponseURLEqualToURL): Rewrote to use Vector and UChar,

        removing all the type casts and making the whole function much shorter.

        * kwq/WebCoreAXObject.mm:

        (AXAttributedStringAppendText): Use UChar instead of QChar.

        (-[WebCoreAXObject doAXAttributedStringForTextMarkerRange:]): More of the same.

        * loader/Cache.h: Remove unnecessary default parameters, preventing the need to

        include the DeprecatedString.h header in this header. Cleaned up the header

        structure a bit, removing some obsolete and redundant comments and fixing typos.

        * loader/Cache.cpp: Removed unused preload functions.

        * page/Frame.h:

        * page/Frame.cpp:

        (WebCore::UserStyleSheetLoader::UserStyleSheetLoader): Added explicit arguments.

        This was the only caller anywhere that took advantage of the default parameter

        values in one of the Cache class request functions.

        (WebCore::Frame::backslashAsCurrencySymbol): Changed QChar to UChar.

        * platform/AtomicString.h: Changed QChar to UChar. Removed constructor that makes

        an AtomicString from a single character. Renamed unicode() function to characters().

        Renamed KHTML_ATOMICSTRING_HIDE_GLOBALS to ATOMICSTRING_HIDE_GLOBALS.

        * platform/AtomicString.cpp:

        (WebCore::CStringTranslator::equal): Changed QChar to UChar.

        (WebCore::operator==): Changed unicode() to characters().

        (WebCore::UCharBufferTranslator::hash): More of the same.

        (WebCore::UCharBufferTranslator::equal): Ditto.

        (WebCore::UCharBufferTranslator::translate): Ditto.

        (WebCore::AtomicString::add): Ditto.

        (WebCore::AtomicString::operator Identifier): Ditto.

        (WebCore::AtomicString::operator UString): Ditto.

        (WebCore::AtomicString::AtomicString): Moved here so we don't need DeprecatedString.h

        in the header.

        (WebCore::AtomicString::deprecatedString): Ditto.

        * platform/DeprecatedString.h: Removed QChar::Direction enum and all the DirXXX values,

        isDigit, isLetter, isNumber, isLetterOrNumber, isPunct, digitValue, and direction functions.

        (QChar::isSpace): Changed to use u_charDirection instead of QChar::direction.

        * platform/Font.h: (WebCore::Font::width): Changed QChar to UChar.

        * platform/Font.cpp: (WebCore::Font::width): Ditto.

        * platform/GraphicsContext.h:

        * platform/GraphicsContext.cpp:

        (WebCore::GraphicsContext::drawText): Changed QChar to UChar. Removed horizontalAlignment

        parameter from simplified string drawing entry point, since it's not used.

        (WebCore::GraphicsContext::drawHighlightForText): Changed QChar to UChar.

        * platform/PlatformString.h: Changed QChar to UChar. Removed constructor that makes

        a String from a single character. Renamed unicode() function to characters(). Added

        an append function and changed += operator to just call that. Added a foldCase() function.

        Removed the concatenation operators that add individual strings before or after.

        * platform/String.cpp:

        (WebCore::String::String): Changed QChar to UChar.

        (WebCore::String::append): Renamed from operator+= and removed the return value.

        (WebCore::String::operator[]): Changed QChar to UChar.

        (WebCore::String::foldCase): Added.

        (WebCore::String::percentage): More of the same.

        (WebCore::String::characters): Renamed from unicode().

        (WebCore::String::deprecatedString): More of the same.

        (WebCore::String::sprintf): Fixed mistakes in the comments.

        (WebCore::String::isEmpty): Tweaked a bit.

        (WebCore::operator==): More of the same.

        (WebCore::String::operator Identifier): Ditto.

        (WebCore::String::operator UString): Ditto.

        * platform/SegmentedString.h: Changed from QChar to UChar. Had to initialize

        data members that are now UChar.

        * platform/SegmentedString.cpp:

        (WebCore::SegmentedString::length): Updated for change from QChar to UChar.

        (WebCore::SegmentedString::append): Ditto.

        (WebCore::SegmentedString::prepend): Ditto.

        (WebCore::SegmentedString::toString): Ditto.

        * platform/StringHash.h: Updated to use UChar instead of QChar and for name changes.

        Also changed to use case folding intead of lowercasing for case insensitive hashing.

        * platform/StringImpl.h:

        * platform/StringImpl.cpp:

        (WebCore::newUCharVector): Changed to UChar from QChar.

        (WebCore::deleteUCharVector): Ditto.

        (WebCore::StringImpl::StringImpl): Ditto.

        (WebCore::StringImpl::init): Ditto. Also renamed from initWithChar and initWithQChar.

        (WebCore::StringImpl::~StringImpl): Ditto.

        (WebCore::StringImpl::append): Ditto.

        (WebCore::StringImpl::insert): Ditto.

        (WebCore::StringImpl::truncate): Ditto.

        (WebCore::StringImpl::remove): Ditto.

        (WebCore::StringImpl::split): Ditto.

        (WebCore::StringImpl::containsOnlyWhitespace): Ditto. Also added comment because this

        function seems a little broken.

        (WebCore::parseLength): More of the same.

        (WebCore::StringImpl::toCoordsArray): Ditto.

        (WebCore::StringImpl::toLengthArray): Ditto.

        (WebCore::StringImpl::isLower): Ditto.

        (WebCore::StringImpl::lower): Rewrote to use u_strToLower.

        (WebCore::StringImpl::upper): Rewrote to use u_strToUpper.

        (WebCore::StringImpl::foldCase): Added. Uses u_strFoldCase.

        (WebCore::getWordBreakIterator): Changed to use U_FAILURE instead of accepting only

        U_ZERO_ERROR as a success code.

        (WebCore::StringImpl::capitalize): More QChar to UChar changes.

        (WebCore::StringImpl::toInt): Ditto.

        (WebCore::equal): Changed from QChar to UChar and was careful to preserve the old

        semantics where "high ASCII" is treated as U+0080-U+00FF even though I don't know

        if this feature is important.

        (WebCore::equalIgnoringCase): Ditto, but used case folding instead of lowercasing

        by using the u_foldCase and u_memcasecmp functions. Also renamed from

        equalCaseInsensitive for more-consistent naming.

        (WebCore::StringImpl::find): Ditto. Use case folding for the case insensitive branch.

        (WebCore::StringImpl::replace): More of the same.

        (WebCore::StringImpl::computeHash): Ditto.

        (WebCore::StringImpl::ascii): Ditto.

        * platform/TextBoundaries.h: Changed from QChar to UChar.

        * platform/mac/TextBoundaries.mm:

        (WebCore::findWordBoundary): Made the change to UChar and removed some type casts.

        (WebCore::findNextWordFromIndex): Ditto.

        (WebCore::findSentenceBoundary): Ditto.

        (WebCore::findNextSentenceFromIndex): Ditto.

        * platform/TextEncoding.h:

        * platform/TextEncoding.cpp:

        (WebCore::TextEncoding::backslashAsCurrencySymbol): Changed from QChar to UChar.

        (WebCore::TextEncoding::fromUnicode): More of the same.

        * platform/mac/TextEncodingMac.cpp: (WebCore::TextEncoding::fromUnicode): More

        of the same.

        * platform/mac/FontFamilyMac.mm: (WebCore::FontFamily::getNSFamily): Removed a

        now-unneeded type cast.

        * platform/mac/FontMac.mm:

        (WebCore::Font::selectionRectForText):

        (WebCore::Font::drawText):

        (WebCore::Font::drawHighlightForText):

        (WebCore::Font::floatWidth):

        (WebCore::Font::checkSelectionPoint):

        Changed QChar to UChar and removed some now-unneeded type casts.

        * editing/RebalanceWhitespaceCommand.cpp: (WebCore::isWhitespace):

        * editing/ReplaceSelectionCommand.cpp: (WebCore::ReplaceSelectionCommand::doApply):

        * editing/visible_units.cpp:

        (WebCore::previousBoundary):

        (WebCore::nextBoundary):

        (WebCore::startWordBoundary):

        (WebCore::endWordBoundary):

        (WebCore::previousWordPositionBoundary):

        (WebCore::nextWordPositionBoundary):

        (WebCore::startSentenceBoundary):

        (WebCore::endSentenceBoundary):

        (WebCore::previousSentencePositionBoundary):

        (WebCore::nextSentencePositionBoundary):

        (WebCore::startOfParagraph):

        (WebCore::endOfParagraph):

        * html/HTMLParser.cpp: (WebCore::HTMLParser::handleError):

        * rendering/InlineTextBox.cpp:

        (WebCore::InlineTextBox::selectionRect):

        (WebCore::InlineTextBox::paint):

        (WebCore::InlineTextBox::paintSelection):

        (WebCore::InlineTextBox::paintMarkedTextBackground):

        (WebCore::InlineTextBox::paintTextMatchMarker):

        (WebCore::InlineTextBox::offsetForPosition):

        (WebCore::InlineTextBox::positionForOffset):

        * rendering/RenderBlock.cpp:

        (WebCore::stripTrailingSpace):

        (WebCore::RenderBlock::updateFirstLetter):

        * rendering/RenderFlexibleBox.cpp:

        (WebCore::RenderFlexibleBox::layoutVerticalBox):

        * rendering/RenderObject.h:

        * rendering/RenderObject.cpp:

        (WebCore::RenderObject::backslashAsCurrencySymbol):

        * rendering/RenderTreeAsText.cpp: (quoteAndEscapeNonPrintables):

        * rendering/break_lines.cpp: (WebCore::nextBreakablePosition):

        * rendering/break_lines.h: (WebCore::isBreakable):

        * rendering/render_style.h: (WebCore::RenderStyle::isCollapsibleWhiteSpace):

        * xml/XSLStyleSheet.cpp: (WebCore::XSLStyleSheet::parseString):

        * xml/xmlhttprequest.cpp:

        (WebCore::getMIMEType):

        (WebCore::getCharset):

        Changed QChar to UChar.

        * rendering/RenderImage.cpp:

        (WebCore::RenderImage::imageChanged): Changed QChar to UChar.

        (WebCore::RenderImage::paint): Changed callers of drawText to no-longer pass 0

        for the horizontal alignment, since I removed that parameters.

        * rendering/RenderText.h: Changed QChar to UChar.

        * rendering/RenderText.cpp:

        (WebCore::characterBreakIterator): Update for name change.

        (WebCore::RenderText::RenderText): Ditto.

        (WebCore::RenderText::allAscii): Remove uneeded unicode() and allow the value

        U+007F to count as ASCII.

        (WebCore::RenderText::cacheWidths): Changed QChar to UChar.

        (WebCore::RenderText::widthFromCache): Changed code that deals with direction to

        use the ICU direction calls.

        (WebCore::RenderText::trimmedMinMaxWidth): Changed QChar to UChar.

        (WebCore::RenderText::calcMinMaxWidth): Ditto.

        (WebCore::RenderText::containsOnlyWhitespace): Ditto.

        (WebCore::RenderText::setText): Ditto.

        (WebCore::RenderText::width): Ditto.

        * rendering/RenderTextField.cpp:

        (WebCore::RenderTextField::updateFromElement): Removed unneeded QChar cast.

        (WebCore::RenderTextField::calcMinMaxWidth): Changed from QChar to UChar.

        * rendering/bidi.h:

        * rendering/bidi.cpp:

        (WebCore::BidiIterator::BidiIterator):

        (WebCore::BidiState::BidiState):

        (WebCore::BidiContext::BidiContext):

        (WebCore::bidiNext):

        (WebCore::bidiFirst):

        (WebCore::BidiIterator::current):

        (WebCore::BidiIterator::direction):

        (WebCore::addRun):

        (WebCore::checkMidpoints):

        (WebCore::appendRun):

        (WebCore::embed):

        (WebCore::RenderBlock::tabWidth):

        (WebCore::RenderBlock::computeHorizontalPositionsForLine):

        (WebCore::RenderBlock::bidiReorderLine):

        (WebCore::RenderBlock::layoutInlineChildren):

        (WebCore::skipNonBreakingSpace):

        (WebCore::RenderBlock::skipWhitespace):

        (WebCore::RenderBlock::findNextLineBreak):

        (WebCore::RenderBlock::checkLinesForTextOverflow):

        Changed from QChar to UChar and all direction from QChar constants to the

        ones from ICU.

        * rendering/render_form.cpp:

        (WebCore::RenderLineEdit::updateFromElement):

        (WebCore::RenderSelect::updateFromElement):

        (WebCore::RenderTextArea::updateFromElement):

        (WebCore::RenderTextArea::text):

        (WebCore::RenderTextArea::textWithHardLineBreaks):

        Got rid of now-unneeded QChar type casts.

        * rendering/render_line.cpp:

        (WebCore::InlineFlowBox::placeBoxesHorizontally): Updated for change from QChar

        to UChar.

        (WebCore::EllipsisBox::paint): Updated for unicode() -> characters() name change.

        * rendering/render_list.cpp:

        (WebCore::toRoman): Updated from QChar to UChar.