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tdelibs/khtml/html/html_elementimpl.cpp

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// -*- 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 >= TQChar('0') && c <= TQChar('9') ) ||
( c >= TQChar('a') && c <= TQChar('f') ) ||
( c >= TQChar('A') && c <= TQChar('F') );
}
static inline int toHex( const TQChar &c ) {
return ( (c >= TQChar('0') && c <= TQChar('9'))
? (c.tqunicode() - '0')
: ( ( c >= TQChar('a') && c <= TQChar('f') )
? (c.tqunicode() - 'a' + 10)
: ( ( c >= TQChar('A') && c <= TQChar('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()
{
}
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