html_tableimpl.cpp

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

/**
 * This file is part of the DOM implementation for KDE.
 *
 * Copyright (C) 1997 Martin Jones ([e-mail])
 *           (C) 1997 Torben Weis ([e-mail])
 *           (C) 1998 Waldo Bastian ([e-mail])
 *           (C) 1999-2003 Lars Knoll ([e-mail])
 *           (C) 1999 Antti Koivisto ([e-mail])
 *           (C) 2003 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.
 */

#include "html/html_documentimpl.h"
#include "html/html_tableimpl.h"

#include "dom/dom_exception.h"
#include "dom/dom_node.h"

#include "misc/htmlhashes.h"
#include "khtmlview.h"
#include "khtml_part.h"

#include "css/cssstyleselector.h"
#include "css/cssproperties.h"
#include "css/cssvalues.h"
#include "css/csshelper.h"

#include "rendering/render_table.h"

#include <kdebug.h>
#include <kglobal.h>

using namespace khtml;
using namespace DOM;

HTMLTableElementImpl::HTMLTableElementImpl(DocumentPtr *doc)
  : HTMLElementImpl(doc)
{
    tCaption = 0;
    head = 0;
    foot = 0;
    firstBody = 0;

    rules = None;
    frame = Void;

    padding = 1;

    m_solid = false;

    // reset font color and sizes here, if we don't have strict parse mode.
    // this is 90% compatible to ie and mozilla, and the by way easiest solution...
    // only difference to 100% correct is that in strict mode <font> elements are propagated into tables.
    if ( getDocument()->parseMode() < DocumentImpl::Transitional ) {
        addCSSProperty( CSS_PROP_FONT_SIZE, CSS_VAL_MEDIUM );
        addCSSProperty( CSS_PROP_COLOR, CSS_VAL__KHTML_TEXT );
    }
}

HTMLTableElementImpl::~HTMLTableElementImpl()
{
}

NodeImpl::Id HTMLTableElementImpl::id() const
{
    return ID_TABLE;
}

NodeImpl* HTMLTableElementImpl::setCaption( HTMLTableCaptionElementImpl *c )
{
    int exceptioncode = 0;
    NodeImpl* r;
    if(tCaption) {
        replaceChild ( c, tCaption, exceptioncode );
        r = c;
    }
    else
        r = insertBefore( c, firstChild(), exceptioncode );
    tCaption = c;
    return r;
}

NodeImpl* HTMLTableElementImpl::setTHead( HTMLTableSectionElementImpl *s )
{
    int exceptioncode = 0;
    NodeImpl* r;
    if(head) {
        replaceChild( s, head, exceptioncode );
        r = s;
    }
    else if( foot )
        r = insertBefore( s, foot, exceptioncode );
    else if( firstBody )
        r = insertBefore( s, firstBody, exceptioncode );
    else
        r = appendChild( s, exceptioncode );

    head = s;
    return r;
}

NodeImpl* HTMLTableElementImpl::setTFoot( HTMLTableSectionElementImpl *s )
{
    int exceptioncode = 0;
    NodeImpl* r;
    if(foot) {
        replaceChild ( s, foot, exceptioncode );
        r = s;
    } else if( firstBody )
        r = insertBefore( s, firstBody, exceptioncode );
    else
        r = appendChild( s, exceptioncode );
    foot = s;
    return r;
}

NodeImpl* HTMLTableElementImpl::setTBody( HTMLTableSectionElementImpl *s )
{
    int exceptioncode = 0;
    NodeImpl* r;

    if(firstBody) {
        replaceChild ( s, firstBody, exceptioncode );
        r = s;
    } else
        r = appendChild( s, exceptioncode );
    firstBody = s;

    return r;
}

HTMLElementImpl *HTMLTableElementImpl::createTHead(  )
{
    if(!head)
    {
        int exceptioncode = 0;
        head = new HTMLTableSectionElementImpl(docPtr(), ID_THEAD, true /* implicit */);
        if(foot)
            insertBefore( head, foot, exceptioncode );
        else if(firstBody)
            insertBefore( head, firstBody, exceptioncode);
        else
            appendChild(head, exceptioncode);
    }
    return head;
}

void HTMLTableElementImpl::deleteTHead(  )
{
    if(head) {
        int exceptioncode = 0;
        HTMLElementImpl::removeChild(head, exceptioncode);
    }
    head = 0;
}

HTMLElementImpl *HTMLTableElementImpl::createTFoot(  )
{
    if(!foot)
    {
        int exceptioncode = 0;
        foot = new HTMLTableSectionElementImpl(docPtr(), ID_TFOOT, true /*implicit */);
        if(firstBody)
            insertBefore( foot, firstBody, exceptioncode );
        else
            appendChild(foot, exceptioncode);
    }
    return foot;
}

void HTMLTableElementImpl::deleteTFoot(  )
{
    if(foot) {
        int exceptioncode = 0;
        HTMLElementImpl::removeChild(foot, exceptioncode);
    }
    foot = 0;
}

HTMLElementImpl *HTMLTableElementImpl::createCaption(  )
{
    if(!tCaption)
    {
        int exceptioncode = 0;
        tCaption = new HTMLTableCaptionElementImpl(docPtr());
        insertBefore( tCaption, firstChild(), exceptioncode );
    }
    return tCaption;
}

void HTMLTableElementImpl::deleteCaption(  )
{
    if(tCaption) {
        int exceptioncode = 0;
        HTMLElementImpl::removeChild(tCaption, exceptioncode);
    }
    tCaption = 0;
}

HTMLElementImpl *HTMLTableElementImpl::insertRow( long index, int &exceptioncode )
{
    // The DOM requires that we create a tbody if the table is empty
    // (cf DOM2TS HTMLTableElement31 test)
    // (note: this is different from "if the table has no sections", since we can have
    // <TABLE><TR>)
    if(!firstBody && !head && !foot && !hasChildNodes())
        setTBody( new HTMLTableSectionElementImpl(docPtr(), ID_TBODY, true /* implicit */) );

    kdDebug(6030) << k_funcinfo << index << endl;
    HTMLTableSectionElementImpl* section = 0L;
    HTMLTableSectionElementImpl* lastSection = 0L;
    NodeImpl *node = firstChild();
    // The DOM requires that index=-1 means 'append after last'
    bool append = (index == -1);
    bool found = false;
    for ( ; node && (index>=0 || append) ; node = node->nextSibling() )
    {
	// there could be 2 tfoot elements in the table. Only the first one is the "foot", that's why we have the more
	// complicated if statement below.
        if ( node != foot && (node->id() == ID_THEAD || node->id() == ID_TFOOT || node->id() == ID_TBODY) )
        {
            section = static_cast<HTMLTableSectionElementImpl *>(node);
            lastSection = section;
            //kdDebug(6030) << k_funcinfo << "section=" << section->tagName() << " rows:" << section->numRows() << endl;
            if ( !append )
            {
                int rows = section->numRows();
                if ( rows > index ) {
		    found = true;
                    break;
                } else
                    index -= rows;
                //kdDebug(6030) << "       index is now " << index << endl;
            }
        }
    }
    // insertRow(numRows) appends to TFOOT. insertRow(-1) appends to TBODY, hence the !append.
    if ( !found && !append )
        section = static_cast<HTMLTableSectionElementImpl *>(foot);

    // If index has decreased to 0, it means "insert before first row in current section"
    // or "append after last row" (if there's no current section anymore)
    if ( !section && ( index == 0 || append ) )
    {
        section = lastSection;
        index = section ? section->numRows() : 0;
    }
    if ( section && (index >= 0 || append) ) {
        //kdDebug(6030) << "Inserting row into section " << section << "(" << section->tagName().string() << ") at index " << index << endl;
        return section->insertRow( index, exceptioncode );
    } else {
        // No more sections => index is too big
        exceptioncode = DOMException::INDEX_SIZE_ERR;
        return 0L;
    }
}

void HTMLTableElementImpl::deleteRow( long index, int &exceptioncode )
{
    HTMLTableSectionElementImpl* section = 0L;
    NodeImpl *node = firstChild();
    bool lastRow = index == -1;
    HTMLTableSectionElementImpl* lastSection = 0L;
    bool found = false;
    for ( ; node ; node = node->nextSibling() )
    {
        if ( node != foot && (node->id() == ID_THEAD || node->id() == ID_TFOOT || node->id() == ID_TBODY) )
        {
            section = static_cast<HTMLTableSectionElementImpl *>(node);
            lastSection = section;
            int rows = section->numRows();
            if ( !lastRow )
            {
                if ( rows > index ) {
                    found = true;
                    break;
                } else
                    index -= rows;
            }
        }
        section = 0L;
    }
    if ( !found && foot )
        section = static_cast<HTMLTableSectionElementImpl *>(foot);

    if ( lastRow )
        lastSection->deleteRow( -1, exceptioncode );
    else if ( section && index >= 0 && index < section->numRows() )
        section->deleteRow( index, exceptioncode );
    else
        exceptioncode = DOMException::INDEX_SIZE_ERR;
}

NodeImpl *HTMLTableElementImpl::appendChild(NodeImpl *child, int &exceptioncode)
{
    // #105586, allow javascript to insert a TR inside a TABLE, creation section as needed
    if(child->id() == ID_TR && (!getDocument()->parsing() || getDocument()->htmlMode() == DocumentImpl::XHtml)) {
        // See insertRow
        if (!firstBody && !head && !foot && !hasChildNodes()) {
            setTBody( new HTMLTableSectionElementImpl(docPtr(), ID_TBODY, true /* implicit */) );
        }
        Q_ASSERT( firstBody );
        if (firstBody) {
            return firstBody->appendChild( child, exceptioncode );
        }
    }

    return HTMLElementImpl::appendChild( child, exceptioncode );
}

NodeImpl *HTMLTableElementImpl::addChild(NodeImpl *child)
{
#ifdef DEBUG_LAYOUT
    kdDebug( 6030 ) << nodeName().string() << "(Table)::addChild( " << child->nodeName().string() << " )" << endl;
#endif

    int exceptioncode = 0;
    NodeImpl *retval = appendChild( child, exceptioncode );
    if ( retval ) {
	switch(child->id()) {
	case ID_CAPTION:
	    if ( !tCaption )
		tCaption = static_cast<HTMLTableCaptionElementImpl *>(child);
	    break;
	case ID_COL:
	case ID_COLGROUP:
	    break;
	case ID_THEAD:
	    if ( !head )
		head = static_cast<HTMLTableSectionElementImpl *>(child);
	    break;
	case ID_TFOOT:
	    if ( !foot )
		foot = static_cast<HTMLTableSectionElementImpl *>(child);
	    break;
	case ID_TBODY:
	    if ( !firstBody )
		firstBody = static_cast<HTMLTableSectionElementImpl *>(child);
	    break;
	}
    }
    return retval;
}

void HTMLTableElementImpl::parseAttribute(AttributeImpl *attr)
{
    // ### to CSS!!
    switch(attr->id())
    {
    case ATTR_WIDTH:
        if (!attr->value().isEmpty())
            addCSSLength( CSS_PROP_WIDTH, attr->value() );
        else
            removeCSSProperty(CSS_PROP_WIDTH);
        break;
    case ATTR_HEIGHT:
        if (!attr->value().isEmpty())
            addCSSLength(CSS_PROP_HEIGHT, attr->value());
        else
            removeCSSProperty(CSS_PROP_HEIGHT);
        break;
    case ATTR_BORDER:
    {
        int border;
        // ### this needs more work, as the border value is not only
        //     the border of the box, but also between the cells
        if(!attr->val())
            border = 0;
        else if(attr->val()->l == 0)
            border = 1;
        else
            border = attr->val()->toInt();
#ifdef DEBUG_DRAW_BORDER
        border=1;
#endif
        DOMString v = QString::number( border );
        addCSSLength(CSS_PROP_BORDER_WIDTH, v );

        // wanted by HTML4 specs
        if(!border)
            frame = Void, rules = None;
        else
            frame = Box, rules = All;


        if (attached()) updateFrame();
        break;
    }
    case ATTR_BGCOLOR:
        if (!attr->value().isEmpty())
            addHTMLColor(CSS_PROP_BACKGROUND_COLOR, attr->value());
        else
            removeCSSProperty(CSS_PROP_BACKGROUND_COLOR);
        break;
    case ATTR_BORDERCOLOR:
        if(!attr->value().isEmpty()) {
            addHTMLColor(CSS_PROP_BORDER_COLOR, attr->value());
            m_solid = true;
        }

        if (attached()) updateFrame();
        break;
    case ATTR_BACKGROUND:
    {
        if (!attr->value().isEmpty()) {
            QString url = khtml::parseURL( attr->value() ).string();
            url = getDocument()->completeURL( url );
            addCSSProperty(CSS_PROP_BACKGROUND_IMAGE, "url('"+url+"')" );
        }
        else
            removeCSSProperty(CSS_PROP_BACKGROUND_IMAGE);
        break;
    }
    case ATTR_FRAME:

        if ( strcasecmp( attr->value(), "void" ) == 0 )
            frame = Void;
        else if ( strcasecmp( attr->value(), "border" ) == 0 )
            frame = Box;
        else if ( strcasecmp( attr->value(), "box" ) == 0 )
            frame = Box;
        else if ( strcasecmp( attr->value(), "hsides" ) == 0 )
            frame = Hsides;
        else if ( strcasecmp( attr->value(), "vsides" ) == 0 )
            frame = Vsides;
        else if ( strcasecmp( attr->value(), "above" ) == 0 )
            frame = Above;
        else if ( strcasecmp( attr->value(), "below" ) == 0 )
            frame = Below;
        else if ( strcasecmp( attr->value(), "lhs" ) == 0 )
            frame = Lhs;
        else if ( strcasecmp( attr->value(), "rhs" ) == 0 )
            frame = Rhs;

        if (attached()) updateFrame();
        break;
    case ATTR_RULES:
        if ( strcasecmp( attr->value(), "none" ) == 0 )
            rules = None;
        else if ( strcasecmp( attr->value(), "groups" ) == 0 )
            rules = Groups;
        else if ( strcasecmp( attr->value(), "rows" ) == 0 )
            rules = Rows;
        else if ( strcasecmp( attr->value(), "cols" ) == 0 )
            rules = Cols;
        else if ( strcasecmp( attr->value(), "all" ) == 0 )
            rules = All;
        if (attached()) updateFrame();
        break;
   case ATTR_CELLSPACING:
        if (!attr->value().isEmpty())
            addCSSLength(CSS_PROP_BORDER_SPACING, attr->value(), true);
        else
            removeCSSProperty(CSS_PROP_BORDER_SPACING);
        break;
    case ATTR_CELLPADDING:
        if (!attr->value().isEmpty())
	    padding = kMax( 0, attr->value().toInt() );
        else
	    padding = 1;
        if (m_render && m_render->isTable()) {
            static_cast<RenderTable *>(m_render)->setCellPadding(padding);
	    if (!m_render->needsLayout())
	        m_render->setNeedsLayout(true);