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| -rw-r--r-- | khtml/html/html_elementimpl.cpp | 685 |
1 files changed, 685 insertions, 0 deletions
diff --git a/khtml/html/html_elementimpl.cpp b/khtml/html/html_elementimpl.cpp index e69de29bb..a5931cd41 100644 --- a/khtml/html/html_elementimpl.cpp +++ b/khtml/html/html_elementimpl.cpp @@ -0,0 +1,685 @@ +// -*- c-basic-offset: 4; -*- +/** + * This file is part of the DOM implementation for KDE. + * + * Copyright (C) 1999 Lars Knoll (knoll@kde.org) + * (C) 1999 Antti Koivisto (koivisto@kde.org) + * (C) 2003 Dirk Mueller (mueller@kde.org) + * Copyright (C) 2002 Apple Computer, Inc. + * + * 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. + * + */ +// ------------------------------------------------------------------------- +//#define DEBUG +//#define DEBUG_LAYOUT +//#define PAR_DEBUG +//#define EVENT_DEBUG +//#define UNSUPPORTED_ATTR + +#include "html/dtd.h" +#include "html/html_elementimpl.h" +#include "html/html_documentimpl.h" +#include "html/htmltokenizer.h" + +#include "misc/htmlhashes.h" + +#include "khtmlview.h" +#include "khtml_part.h" + +#include "rendering/render_object.h" +#include "rendering/render_replaced.h" +#include "css/css_valueimpl.h" +#include "css/css_stylesheetimpl.h" +#include "css/cssproperties.h" +#include "css/cssvalues.h" +#include "xml/dom_textimpl.h" +#include "xml/dom2_eventsimpl.h" + +#include <kdebug.h> +#include <kglobal.h> +#include "html_elementimpl.h" + +using namespace DOM; +using namespace khtml; + +HTMLElementImpl::HTMLElementImpl(DocumentImpl *doc) + : ElementImpl( doc ) +{ + m_htmlCompat = doc && doc->htmlMode() != DocumentImpl::XHtml; +} + +HTMLElementImpl::~HTMLElementImpl() +{ +} + +bool HTMLElementImpl::isInline() const +{ + if (renderer()) + return ElementImpl::isInline(); + + switch(id()) { + case ID_A: + case ID_FONT: + case ID_TT: + case ID_U: + case ID_B: + case ID_I: + case ID_S: + case ID_STRIKE: + case ID_BIG: + case ID_SMALL: + + // %phrase + case ID_EM: + case ID_STRONG: + case ID_DFN: + case ID_CODE: + case ID_SAMP: + case ID_KBD: + case ID_VAR: + case ID_CITE: + case ID_ABBR: + case ID_ACRONYM: + + // %special + case ID_SUB: + case ID_SUP: + case ID_SPAN: + case ID_NOBR: + case ID_WBR: + return true; + + default: + return ElementImpl::isInline(); + } +} + +DOMString HTMLElementImpl::namespaceURI() const +{ + return (!m_htmlCompat) ? + DOMString(XHTML_NAMESPACE) : DOMString(); +} + + +DOMString HTMLElementImpl::localName() const +{ + // We only have a localName if we were created by createElementNS(), in which + // case we are an XHTML element. This also means we have a lowercase name. + if (!m_htmlCompat) // XHTML == not HTMLCompat + { + NodeImpl::Id _id = id(); + DOMString tn; + if ( _id >= ID_LAST_TAG ) + tn = getDocument()->getName(ElementId, _id); + else // HTML tag + tn = getTagName( _id ); + return tn; // lowercase already + } + // createElement() always returns elements with a null localName. + else + return DOMString(); +} + +DOMString HTMLElementImpl::tagName() const +{ + DOMString tn; + NodeImpl::Id _id = id(); + if ( _id >= ID_LAST_TAG ) + tn = getDocument()->getName(ElementId, _id); + else // HTML tag + tn = getTagName( _id ); + + if ( m_htmlCompat ) + tn = tn.upper(); + + if (m_prefix) + return DOMString(m_prefix) + ":" + tn; + + return tn; +} + +void HTMLElementImpl::parseAttribute(AttributeImpl *attr) +{ + DOMString indexstring; + switch( attr->id() ) + { + case ATTR_ALIGN: + if (attr->val()) { + if ( strcasecmp(attr->value(), "middle" ) == 0 ) + addCSSProperty( CSS_PROP_TEXT_ALIGN, CSS_VAL_CENTER ); + else + addCSSProperty(CSS_PROP_TEXT_ALIGN, attr->value().lower()); + } + else + removeCSSProperty(CSS_PROP_TEXT_ALIGN); + break; +// the core attributes... + case ATTR_ID: + // unique id + setHasID(); + getDocument()->incDOMTreeVersion(); + break; + case ATTR_CLASS: + if (attr->val()) { + DOMString v = attr->value(); + const TQChar* s = v.tqunicode(); + int l = v.length(); + while( l && !s->isSpace() ) + l--,s++; + setHasClassList(l); + setHasClass(true); + } else { + setHasClassList(false); + setHasClass(false); + } + break; + case ATTR_NAME: + getDocument()->incDOMTreeVersion(); + break; + case ATTR_STYLE: + if (m_styleDecls) + m_styleDecls->removeCSSHints(); + else + createDecl(); + m_styleDecls->setProperty(attr->value()); + setChanged(); + break; + case ATTR_TABINDEX: + indexstring=getAttribute(ATTR_TABINDEX); + if (indexstring.length()) + setTabIndex(indexstring.toInt()); + break; +// i18n attributes + case ATTR_LANG: + break; + case ATTR_DIR: + addCSSProperty(CSS_PROP_DIRECTION, attr->value().lower()); + addCSSProperty(CSS_PROP_UNICODE_BIDI, CSS_VAL_EMBED); + break; +// standard events + case ATTR_ONCLICK: + setHTMLEventListener(EventImpl::KHTML_ECMA_CLICK_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onclick", this)); + break; + case ATTR_ONDBLCLICK: + setHTMLEventListener(EventImpl::KHTML_ECMA_DBLCLICK_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "ondblclick", this)); + break; + case ATTR_ONMOUSEDOWN: + setHTMLEventListener(EventImpl::MOUSEDOWN_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onmousedown", this)); + break; + case ATTR_ONMOUSEMOVE: + setHTMLEventListener(EventImpl::MOUSEMOVE_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onmousemove", this)); + break; + case ATTR_ONMOUSEOUT: + setHTMLEventListener(EventImpl::MOUSEOUT_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onmouseout", this)); + break; + case ATTR_ONMOUSEOVER: + setHTMLEventListener(EventImpl::MOUSEOVER_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onmouseover", this)); + break; + case ATTR_ONMOUSEUP: + setHTMLEventListener(EventImpl::MOUSEUP_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onmouseup", this)); + break; + case ATTR_ONKEYDOWN: + setHTMLEventListener(EventImpl::KEYDOWN_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onkeydown", this)); + break; + case ATTR_ONKEYPRESS: + setHTMLEventListener(EventImpl::KEYPRESS_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onkeypress", this)); + break; + case ATTR_ONKEYUP: + setHTMLEventListener(EventImpl::KEYUP_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onkeyup", this)); + break; + case ATTR_ONFOCUS: + setHTMLEventListener(EventImpl::FOCUS_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onfocus", this)); + break; + case ATTR_ONBLUR: + setHTMLEventListener(EventImpl::BLUR_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onblur", this)); + break; + case ATTR_ONSCROLL: + setHTMLEventListener(EventImpl::SCROLL_EVENT, + getDocument()->createHTMLEventListener(attr->value().string(), "onscroll", this)); + break; +// other misc attributes + default: +#ifdef UNSUPPORTED_ATTR + kdDebug(6030) << "UATTR: <" << this->nodeName().string() << "> [" + << attr->name().string() << "]=[" << attr->value().string() << "]" << endl; +#endif + break; + } +} + +void HTMLElementImpl::recalcStyle( StyleChange ch ) +{ + ElementImpl::recalcStyle( ch ); + + if (m_render /*&& changed*/) + m_render->updateFromElement(); +} + +void HTMLElementImpl::addCSSProperty(int id, const DOMString &value) +{ + if(!m_styleDecls) createDecl(); + m_styleDecls->setProperty(id, value, false, true); + setChanged(); +} + +void HTMLElementImpl::addCSSProperty(int id, int value) +{ + if(!m_styleDecls) createDecl(); + m_styleDecls->setProperty(id, value, false, true); + setChanged(); +} + +void HTMLElementImpl::addCSSLength(int id, const DOMString &value, bool numOnly, bool multiLength) +{ + if(!m_styleDecls) createDecl(); + + // strip attribute garbage to avoid CSS parsing errors + // ### create specialized hook that avoids parsing every + // value twice! + if ( value.implementation() ) { + // match \s*[+-]?\d*(\.\d*)?[%\*]? + unsigned i = 0, j = 0; + TQChar* s = value.implementation()->s; + unsigned l = value.implementation()->l; + + while (i < l && s[i].isSpace()) + ++i; + if (i < l && (s[i] == '+' || s[i] == '-')) + ++i; + while (i < l && s[i].isDigit()) + ++i,++j; + + // no digits! + if (j == 0) return; + + int v = kClamp( TQConstString(s, i).string().toInt(), -8192, 8191 ) ; + const char* suffix = "px"; + if (!numOnly || multiLength) { + // look if we find a % or * + while (i < l) { + if (multiLength && s[i] == '*') { + suffix = ""; + break; + } + if (s[i] == '%') { + suffix = "%"; + break; + } + ++i; + } + } + if (numOnly) suffix = ""; + + TQString ns = TQString::number(v) + suffix; + m_styleDecls->setLengthProperty( id, DOMString( ns ), false, true, multiLength ); + setChanged(); + return; + } + + m_styleDecls->setLengthProperty(id, value, false, true, multiLength); + setChanged(); +} + +static inline bool isHexDigit( const TQChar &c ) { + return ( c >= '0' && c <= '9' ) || + ( c >= 'a' && c <= 'f' ) || + ( c >= 'A' && c <= 'F' ); +} + +static inline int toHex( const TQChar &c ) { + return ( (c >= '0' && c <= '9') + ? (c.tqunicode() - '0') + : ( ( c >= 'a' && c <= 'f' ) + ? (c.tqunicode() - 'a' + 10) + : ( ( c >= 'A' && c <= 'F' ) + ? (c.tqunicode() - 'A' + 10) + : -1 ) ) ); +} + +/* color parsing that tries to match as close as possible IE 6. */ +void HTMLElementImpl::addHTMLColor( int id, const DOMString &c ) +{ + if(!m_styleDecls) createDecl(); + + // this is the only case no color gets applied in IE. + if ( !c.length() ) { + removeCSSProperty(id); + return; + } + + if ( m_styleDecls->setProperty(id, c, false, true) ) + return; + + TQString color = c.string(); + // not something that fits the specs. + + // we're emulating IEs color parser here. It maps transparent to black, otherwise it tries to build a rgb value + // out of everyhting you put in. The algorithm is experimentally determined, but seems to work for all test cases I have. + + // the length of the color value is rounded up to the next + // multiple of 3. each part of the rgb triple then gets one third + // of the length. + // + // Each triplet is parsed byte by byte, mapping + // each number to a hex value (0-9a-fA-F to their values + // everything else to 0). + // + // The highest non zero digit in all triplets is remembered, and + // used as a normalization point to normalize to values between 0 + // and 255. + + if ( color.lower() != "transparent" ) { + if ( color[0] == '#' ) + color.remove( 0, 1 ); + int basicLength = (color.length() + 2) / 3; + if ( basicLength > 1 ) { + // IE ignores colors with three digits or less +// qDebug("trying to fix up color '%s'. basicLength=%d, length=%d", +// color.latin1(), basicLength, color.length() ); + int colors[3] = { 0, 0, 0 }; + int component = 0; + int pos = 0; + int maxDigit = basicLength-1; + while ( component < 3 ) { + // search forward for digits in the string + int numDigits = 0; + while ( pos < (int)color.length() && numDigits < basicLength ) { + int hex = toHex( color[pos] ); + colors[component] = (colors[component] << 4); + if ( hex > 0 ) { + colors[component] += hex; + maxDigit = kMin( maxDigit, numDigits ); + } + numDigits++; + pos++; + } + while ( numDigits++ < basicLength ) + colors[component] <<= 4; + component++; + } + maxDigit = basicLength - maxDigit; +// qDebug("color is %x %x %x, maxDigit=%d", colors[0], colors[1], colors[2], maxDigit ); + + // normalize to 00-ff. The highest filled digit counts, minimum is 2 digits + maxDigit -= 2; + colors[0] >>= 4*maxDigit; + colors[1] >>= 4*maxDigit; + colors[2] >>= 4*maxDigit; +// qDebug("normalized color is %x %x %x", colors[0], colors[1], colors[2] ); + // assert( colors[0] < 0x100 && colors[1] < 0x100 && colors[2] < 0x100 ); + + color.sprintf("#%02x%02x%02x", colors[0], colors[1], colors[2] ); +// qDebug( "trying to add fixed color string '%s'", color.latin1() ); + if ( m_styleDecls->setProperty(id, DOMString(color), false, true) ) + return; + } + } + m_styleDecls->setProperty(id, CSS_VAL_BLACK, false, true); +} + +void HTMLElementImpl::removeCSSProperty(int id) +{ + if(!m_styleDecls) + return; + m_styleDecls->setParent(getDocument()->elementSheet()); + m_styleDecls->removeProperty(id, true /*nonCSSHint */); + setChanged(); +} + +DOMString HTMLElementImpl::innerHTML() const +{ + TQString result; //Use TQString to accumulate since DOMString is poor for appends + for (NodeImpl *child = firstChild(); child != NULL; child = child->nextSibling()) { + DOMString kid = child->toString(); + result += TQConstString(kid.tqunicode(), kid.length()).string(); + } + return result; +} + +DOMString HTMLElementImpl::innerText() const +{ + TQString text = ""; + if(!firstChild()) + return text; + + const NodeImpl *n = this; + // find the next text/image after the anchor, to get a position + while(n) { + if(n->firstChild()) + n = n->firstChild(); + else if(n->nextSibling()) + n = n->nextSibling(); + else { + NodeImpl *next = 0; + while(!next) { + n = n->parentNode(); + if(!n || n == (NodeImpl *)this ) goto end; + next = n->nextSibling(); + } + n = next; + } + if(n->isTextNode() ) { + DOMStringImpl* data = static_cast<const TextImpl *>(n)->string(); + text += TQConstString(data->s, data->l).string(); + } + } + end: + return text; +} + +DocumentFragment HTMLElementImpl::createContextualFragment( const DOMString &html ) +{ + // the following is in accordance with the definition as used by IE + if( endTag[id()] == FORBIDDEN ) + return DocumentFragment(); + // IE disallows innerHTML on inline elements. + // I don't see why we should have this restriction, as our + // dhtml engine can cope with it. Lars + //if ( isInline() ) return false; + switch( id() ) { + case ID_COL: + case ID_COLGROUP: + case ID_FRAMESET: + case ID_HEAD: + case ID_TABLE: + case ID_TBODY: + case ID_TFOOT: + case ID_THEAD: + case ID_TITLE: + return DocumentFragment(); + default: + break; + } + if ( !getDocument()->isHTMLDocument() ) + return DocumentFragment(); + + DocumentFragmentImpl* fragment = new DocumentFragmentImpl( docPtr() ); + DocumentFragment f( fragment ); + { + HTMLTokenizer tok( docPtr(), fragment ); + tok.begin(); + tok.write( html.string(), true ); + tok.end(); + } + + // Exceptions are ignored because none ought to happen here. + int ignoredExceptionCode; + + // we need to pop <html> and <body> elements and remove <head> to + // accomadate folks passing complete HTML documents to make the + // child of an element. + for ( NodeImpl* node = fragment->firstChild(); node; ) { + if (node->id() == ID_HTML || node->id() == ID_BODY) { + NodeImpl* firstChild = node->firstChild(); + NodeImpl* child = firstChild; + while ( child ) { + NodeImpl *nextChild = child->nextSibling(); + fragment->insertBefore(child, node, ignoredExceptionCode); + child = nextChild; + } + if ( !firstChild ) { + NodeImpl *nextNode = node->nextSibling(); + fragment->removeChild(node, ignoredExceptionCode); + node = nextNode; + } else { + fragment->removeChild(node, ignoredExceptionCode); + node = firstChild; + } + } else if (node->id() == ID_HEAD) { + NodeImpl *nextNode = node->nextSibling(); + fragment->removeChild(node, ignoredExceptionCode); + node = nextNode; + } else { + node = node->nextSibling(); + } + } + + return f; +} + +void HTMLElementImpl::setInnerHTML( const DOMString &html, int &exceptioncode ) +{ + // Works line innerText in Gecko + // ### test if needed for ID_SCRIPT as well. + if ( id() == ID_STYLE ) { + setInnerText(html, exceptioncode); + return; + } + + DocumentFragment fragment = createContextualFragment( html ); + if ( fragment.isNull() ) { + exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR; + return; + } + + // Make sure adding the new child is ok, before removing all children (#96187) + checkAddChild( fragment.handle(), exceptioncode ); + if ( exceptioncode ) + return; + + removeChildren(); + appendChild( fragment.handle(), exceptioncode ); +} + +void HTMLElementImpl::setInnerText( const DOMString &text, int& exceptioncode ) +{ + // following the IE specs. + if( endTag[id()] == FORBIDDEN ) { + exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR; + return; + } + // IE disallows innerHTML on inline elements. I don't see why we should have this restriction, as our + // dhtml engine can cope with it. Lars + //if ( isInline() ) return false; + switch( id() ) { + case ID_COL: + case ID_COLGROUP: + case ID_FRAMESET: + case ID_HEAD: + case ID_HTML: + case ID_TABLE: + case ID_TBODY: + case ID_TFOOT: + case ID_THEAD: + case ID_TR: + exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR; + return; + default: + break; + } + + removeChildren(); + + TextImpl *t = new TextImpl( docPtr(), text.implementation() ); + appendChild( t, exceptioncode ); +} + +void HTMLElementImpl::addHTMLAlignment( DOMString tqalignment ) +{ + //qDebug("tqalignment is %s", tqalignment.string().latin1() ); + // vertical tqalignment with respect to the current baseline of the text + // right or left means floating images + int propfloat = -1; + int propvalign = -1; + if ( strcasecmp( tqalignment, "absmiddle" ) == 0 ) { + propvalign = CSS_VAL_MIDDLE; + } else if ( strcasecmp( tqalignment, "absbottom" ) == 0 ) { + propvalign = CSS_VAL_BOTTOM; + } else if ( strcasecmp( tqalignment, "left" ) == 0 ) { + propfloat = CSS_VAL_LEFT; + propvalign = CSS_VAL_TOP; + } else if ( strcasecmp( tqalignment, "right" ) == 0 ) { + propfloat = CSS_VAL_RIGHT; + propvalign = CSS_VAL_TOP; + } else if ( strcasecmp( tqalignment, "top" ) == 0 ) { + propvalign = CSS_VAL_TOP; + } else if ( strcasecmp( tqalignment, "middle" ) == 0 ) { + propvalign = CSS_VAL__KHTML_BASELINE_MIDDLE; + } else if ( strcasecmp( tqalignment, "center" ) == 0 ) { + propvalign = CSS_VAL_MIDDLE; + } else if ( strcasecmp( tqalignment, "bottom" ) == 0 ) { + propvalign = CSS_VAL_BASELINE; + } else if ( strcasecmp ( tqalignment, "texttop") == 0 ) { + propvalign = CSS_VAL_TEXT_TOP; + } + + if ( propfloat != -1 ) + addCSSProperty( CSS_PROP_FLOAT, propfloat ); + if ( propvalign != -1 ) + addCSSProperty( CSS_PROP_VERTICAL_ALIGN, propvalign ); +} + +DOMString HTMLElementImpl::toString() const +{ + if (!hasChildNodes()) { + DOMString result = openTagStartToString(); + result += ">"; + + if (endTag[id()] == REQUIRED) { + result += "</"; + result += tagName(); + result += ">"; + } + + return result; + } + + return ElementImpl::toString(); +} + +// ------------------------------------------------------------------------- +HTMLGenericElementImpl::HTMLGenericElementImpl(DocumentImpl *doc, ushort i) + : HTMLElementImpl(doc) +{ + _id = i; +} + +HTMLGenericElementImpl::~HTMLGenericElementImpl() +{ +} |