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/* This file is part of the KDE project
Copyright (C) 2006 Alfredo Beaumont Sainz <alfredo.beaumont@gmail.com>
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 <klocale.h>
#include "numberelement.h"
#include "kformuladefs.h"
#include "textelement.h"
#include "identifierelement.h"
#include "operatorelement.h"
#include "kformulacommand.h"
#include "kformulacontainer.h"
#include "formulaelement.h"
#include "creationstrategy.h"
KFORMULA_NAMESPACE_BEGIN
NumberElement::NumberElement( BasicElement* parent ) : TokenElement( parent ) {}
/*
* Token elements' content has to be of homogeneous type. Every token element
* must (TODO: check this) appear inside a non-token sequence, and thus, if
* the command asks for a different content, a new element has to be created in
* parent sequence.
*/
KCommand* NumberElement::buildCommand( Container* container, Request* request )
{
FormulaCursor* cursor = container->activeCursor();
if ( cursor->isReadOnly() ) {
formula()->tell( i18n( "write protection" ) );
return 0;
}
if ( *request == req_addNumber ) {
KFCReplace* command = new KFCReplace( i18n("Add Number"), container );
NumberRequest* nr = static_cast<NumberRequest*>( request );
TextElement* element = creationStrategy->createTextElement( nr->ch(), false );
command->addElement( element );
return command;
}
if ( countChildren() == 0 || cursor->getPos() == countChildren() ) {
// We are in the last position, so it's easy, call the parent to
// create a new child
SequenceElement* parent = static_cast<SequenceElement*>( getParent() );
if ( parent ) {
uint pos = parent->childPos( this );
cursor->setTo( parent, pos + 1);
return parent->buildCommand( container, request );
}
}
if ( cursor->getPos() == 0 ) {
SequenceElement* parent = static_cast<SequenceElement*>( getParent() );
if ( parent ) {
uint pos = parent->childPos( this );
cursor->setTo( parent, pos );
return parent->buildCommand( container, request );
}
}
// We are in the middle of a token, so:
// a) Cut from mark to the end
// b) Create a new token and add an element from key pressed
// c) Create a new token and add elements cut previously
// d) Move cursor to parent so that it command execution works fine
switch( *request ) {
case req_addTextChar: {
KFCSplitToken* command = new KFCSplitToken( i18n("Add Text"), container );
TextCharRequest* tr = static_cast<TextCharRequest*>( request );
IdentifierElement* id = creationStrategy->createIdentifierElement();
TextElement* text = creationStrategy->createTextElement( tr->ch() );
command->addCursor( cursor );
command->addToken( id );
command->addContent( id, text );
SequenceElement* parent = static_cast< SequenceElement* >( getParent() );
if ( parent ) {
cursor->setTo( parent, parent->childPos( this ) + 1 );
}
return command;
}
case req_addText: {
KFCSplitToken* command = new KFCSplitToken( i18n("Add Text"), container );
TextRequest* tr = static_cast<TextRequest*>( request );
IdentifierElement* id = creationStrategy->createIdentifierElement();
command->addCursor( cursor );
command->addToken( id );
for ( uint i = 0; i < tr->text().length(); i++ ) {
TextElement* text = creationStrategy->createTextElement( tr->text()[i] );
command->addContent( id, text );
}
SequenceElement* parent = static_cast< SequenceElement* >( getParent() );
if ( parent ) {
cursor->setTo( parent, parent->childPos( this ) + 1 );
}
return command;
}
case req_addOperator: {
KFCSplitToken* command = new KFCSplitToken( i18n("Add Operator"), container );
OperatorRequest* opr = static_cast<OperatorRequest*>( request );
OperatorElement* op = creationStrategy->createOperatorElement();
TextElement* text = creationStrategy->createTextElement( opr->ch() );
command->addCursor( cursor );
command->addToken( op );
command->addContent( op, text );
SequenceElement* parent = static_cast< SequenceElement* >( getParent() );
if ( parent ) {
cursor->setTo( parent, parent->childPos( this ) + 1 );
}
return command;
}
case req_addEmptyBox:
case req_addNameSequence:
case req_addBracket:
case req_addSpace:
case req_addFraction:
case req_addRoot:
case req_addSymbol:
case req_addOneByTwoMatrix:
case req_addMatrix: {
SequenceElement* parent = static_cast<SequenceElement*>( getParent() );
if ( parent ) {
uint pos = parent->childPos( this );
cursor->setTo( parent, pos + 1);
return parent->buildCommand( container, request );
}
}
default:
return SequenceElement::buildCommand( container, request );
}
return 0;
}
KFORMULA_NAMESPACE_END
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