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Diffstat (limited to 'lib/kformula/numberelement.cc')
| -rw-r--r-- | lib/kformula/numberelement.cc | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/lib/kformula/numberelement.cc b/lib/kformula/numberelement.cc new file mode 100644 index 00000000..41ddc179 --- /dev/null +++ b/lib/kformula/numberelement.cc @@ -0,0 +1,153 @@ +/* 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 |