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/*
* Copyright (c) 2002-2003 Jesper K. Pedersen <blackie@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2 as published by the Free Software Foundation.
*
* 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.
**/
#ifdef QT_ONLY
#include "compat.h"
#else
#include <klocale.h>
#include "charselector.moc"
#endif
#include "charselector.h"
#include "limitedcharlineedit.h"
#include "regexpconverter.h"
#include <qlayout.h>
#include <qwidgetstack.h>
#include <qcombobox.h>
/**
In the class CharSelector, three LimitedCharLineEdit are used.
These widgets are all used in a QWidgetStack. The LimitedCharLineEdit
class is basically a QLineEdit, which is limited to a certain
number of characters. This conflicts with the QWidgetStack, as this
class expects the widgets on the stack to take up all space.
StackContainer fills in this gab.
*/
class StackContainer :public QWidget
{
public:
StackContainer( QWidget* child, QWidget* parent ) : QWidget( parent )
{
QHBoxLayout* layout = new QHBoxLayout( this );
child->reparent( this, QPoint(0,0), false );
layout->addWidget( child );
layout->addStretch( 1 );
}
};
CharSelector::CharSelector( QWidget* parent, const char* name )
:QWidget( parent, name ), _oldIndex(0)
{
QStringList items;
QHBoxLayout* layout = new QHBoxLayout( this, 0, 6 );
_type = new QComboBox( this, "_type" );
items << i18n("Normal Character")
<< i18n("Unicode Char in Hex.")
<< i18n("Unicode Char in Oct.")
<< QString::fromLatin1("----")
<< i18n("The Bell Character (\\a)")
<< i18n("The Form Feed Character (\\f)")
<< i18n("The Line Feed Character (\\n)")
<< i18n("The Carriage Return Character (\\r)")
<< i18n("The Horizontal Tab Character (\\t)")
<< i18n("The Vertical Tab Character (\\v)");
_type->insertStringList( items );
layout->addWidget( _type );
_stack = new QWidgetStack( this, "_stack" );
layout->addWidget( _stack );
_normal = new LimitedCharLineEdit( LimitedCharLineEdit::NORMAL, 0, "_normal" );
_stack->addWidget( new StackContainer( _normal, _stack ), 0 );
_hex = new LimitedCharLineEdit( LimitedCharLineEdit::HEX, _stack, "_hex" );
_stack->addWidget( new StackContainer( _hex, _stack ), 1 );
_oct = new LimitedCharLineEdit( LimitedCharLineEdit::OCT, _stack, "_oct" );
_stack->addWidget( new StackContainer( _oct, _stack ), 2 );
_stack->raiseWidget( 0 );
connect( _type, SIGNAL( activated( int ) ), this, SLOT(slotNewItem( int ) ) );
}
void CharSelector::slotNewItem( int which )
{
_type->setCurrentItem( which );
if ( which <= 2 ) {
_stack->raiseWidget( which );
_normal->setEnabled( true );
_hex->setEnabled( true );
_oct->setEnabled( true );
}
else if ( which == 3 ) {
_type->setCurrentItem( _oldIndex );
slotNewItem(_oldIndex);
return;
}
else {
_normal->setEnabled( false );
_hex->setEnabled( false );
_oct->setEnabled( false );
}
_oldIndex = which;
}
void CharSelector::setText( QString text )
{
// This is the best I can do about missing character range features, unless all of
// textrangeregexp is to be reworked. The problem is that textrangeregexp only allows to
// get the characters, which would be something like \a, but \a does not work with say Emacs
// style regexps -- ko28 Sep. 2003 10:55 -- Jesper K. Pedersen
bool enabled = ( RegExpConverter::current()->features() & RegExpConverter::ExtRange );
_type->setEnabled( enabled );
if ( text.at(0) == QChar('\\') ) {
if ( text.at(1) == QChar('x') ) {
_hex->setText(text.mid(2));
slotNewItem( 1 );
}
else if ( text.at(1) == QChar('0') ) {
_oct->setText(text.mid(2));
slotNewItem( 2 );
}
else if ( text.at(1) == QChar('a') )
slotNewItem(4);
else if ( text.at(1) == QChar('f') )
slotNewItem(5);
else if ( text.at(1) == QChar('n') )
slotNewItem(6);
else if ( text.at(1) == QChar('r') )
slotNewItem(7);
else if ( text.at(1) == QChar('t') )
slotNewItem(8);
else if ( text.at(1) == QChar('v') )
slotNewItem(9);
else {
qWarning("Warning %s:%d Unknown escape %s", __FILE__, __LINE__, text.latin1() );
}
}
else {
slotNewItem(0);
_normal->setText(text);
}
}
bool CharSelector::isEmpty() const
{
return ( _type->currentItem() == 0 && _normal->text().isEmpty() ) ||
( _type->currentItem() == 1 && _hex->text().isEmpty() ) ||
( _type->currentItem() == 2 && _oct->text().isEmpty() );
}
QString CharSelector::text() const
{
switch ( _type->currentItem() ) {
case 0: // Normal Character
return _normal->text();
case 1: // Hex
return QString::fromLocal8Bit("\\x") + _hex->text();
case 2: // Oct
return QString::fromLocal8Bit("\\0") + _oct->text();
case 3: // The seperator
break;
case 4:
return QString::fromLatin1("\\a");
case 5:
return QString::fromLatin1("\\f");
case 6:
return QString::fromLatin1("\\n");
case 7:
return QString::fromLatin1("\\r");
case 8:
return QString::fromLatin1("\\t");
case 9:
return QString::fromLatin1("\\v");
}
return QString::null;
}
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