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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 TQT_ONLY
#include "compat.h"
#else
#include <klocale.h>
#include <kmessagebox.h>
#endif
#include "altnwidget.h"
#include "dragaccepter.h"
#include "concwidget.h"
#include "altnregexp.h"
#include <tqpainter.h>
AltnWidget::AltnWidget(RegExpEditorWindow* editorWindow, TQWidget *parent,
const char *name)
:MultiContainerWidget(editorWindow, parent, name == 0 ? "AltnWidget" : name)
{
DragAccepter *accepter = new DragAccepter(editorWindow, this);
accepter->resize(0,0); // See note (1) in Comments
_children.append(accepter);
_text = i18n("Alternatives");
}
AltnWidget::AltnWidget( AltnRegExp* regexp, RegExpEditorWindow* editorWindow,
TQWidget* parent, const char* name)
:MultiContainerWidget( editorWindow, parent, name )
{
DragAccepter *accepter = new DragAccepter(editorWindow, this);
accepter->resize(0,0); // See note (1) in Comments
_children.append(accepter);
_text = i18n("Alternatives");
RegExpList list = regexp->children();
for ( RegExpListIt it(list); *it; ++it ) {
RegExpWidget* child = WidgetFactory::createWidget( *it, editorWindow, this );
ConcWidget* conc;
if ( ! (conc = dynamic_cast<ConcWidget*>( child ) ) ) {
conc = new ConcWidget( editorWindow, child, parent );
}
append( conc );
}
updateDrawLineInfo();
}
void AltnWidget::addNewChild(DragAccepter *accepter, RegExpWidget *child)
{
ConcWidget *conc = new ConcWidget(_editorWindow, child,this);
MultiContainerWidget::addNewChild( accepter, conc );
updateDrawLineInfo();
repaint();
}
void AltnWidget::setConcChild(ConcWidget *child)
{
addNewConcChild( dynamic_cast<DragAccepter*>(_children.at(0)), child );
}
void AltnWidget::addNewConcChild(DragAccepter *accepter, ConcWidget *child)
{
child->reparent(this, TQPoint(0,0), false);
MultiContainerWidget::addNewChild( accepter, child );
updateDrawLineInfo();
}
TQSize AltnWidget::sizeHint() const
{
TQPtrListIterator<RegExpWidget> it(_children);
// Skip the first child, as we only need half of the size of the first and the
// last drag accepter. Does, however, not apply when there only is onw child.
if ( _children.count() != 1 )
++it;
_childrenWidth = 0;
_childrenHeight = 0;
for ( ; *it ; ++it) {
TQSize thisChildSize = (*it)->sizeHint();
_childrenWidth = TQMAX(_childrenWidth, thisChildSize.width());
_childrenHeight += thisChildSize.height();
}
// Now add the size of the header
TQFontMetrics metrics = fontMetrics();
_textSize = metrics.size(0,_text);
int headerWidth = _textSize.width() + 2 * bdSize + 2;
_childrenWidth = TQMAX(_childrenWidth, headerWidth);
return TQSize(_childrenWidth + 2*pw, _childrenHeight + _textSize.height() + 1*pw );
}
void AltnWidget::paintEvent( TQPaintEvent *e)
{
Q_ASSERT( dynamic_cast<DragAccepter*>(_children.at(0)) );
// if this fails, then I should check the location of the show()
Q_ASSERT( _children.count() == 1 ||
( _children.count() >=3 &&
dynamic_cast<DragAccepter*>(_children.at(_children.count()-1)) ) );
int offset = 0;
TQSize mySize = sizeHint();
TQPainter painter(this);
drawPossibleSelection( painter, mySize );
//-------------------------------------- First draw the border and text
int startY = _textSize.height()/2;
painter.drawLine(0, startY, bdSize, startY);
int xOffset = bdSize +1;
painter.drawText(xOffset,0,_textSize.width(), _textSize.height(),0,_text);
xOffset += _textSize.width() +1;
painter.drawLine(xOffset,startY,mySize.width(), startY);
painter.drawLine(0,startY,0,mySize.height());
painter.drawLine(mySize.width()-pw, startY, mySize.width()-pw, mySize.height());
painter.drawLine(0,mySize.height()-pw, mySize.width()-pw, mySize.height()-pw);
//---- Run through all the children and place them at the correct location.
offset = _textSize.height();
xOffset = pw;
for (unsigned int i = 0; i < _children.count(); i++ ) {
RegExpWidget* child = _children.at(i);
TQSize childSize = child->sizeHint();
TQSize curChildSize = child->size();
//-------------------------------------- place the child
int x = xOffset;
int y = offset;
int h = childSize.height();
if ( ( _children.count() != 1 ) && ( i == 0 || i == _children.count() -1 ) ) {
// first and last DragAccepter should only be half size.
h /= 2;
}
int w = _childrenWidth;
child->setGeometry( x, y, w, h );
if ( w != curChildSize.width() || h != curChildSize.height() ) {
// I resized the child, so give it a chance to relect thus.
child->update();
}
offset += h;
}
MultiContainerWidget::paintEvent( e );
}
RegExp* AltnWidget::regExp() const
{
AltnRegExp *regexp = new AltnRegExp( isSelected() );
TQPtrListIterator<RegExpWidget> it(_children);
++it; // start with the second element
for ( ; *it; it+=2 ) {
regexp->addRegExp( (*it)->regExp() );
}
return regexp;
}
void AltnWidget::applyRegExpToSelection( RegExpType type )
{
for ( unsigned int i=1; i < _children.count(); i += 2 ) {
RegExpWidget* child = _children.at( i );
if ( child->hasSelection() ) {
child->applyRegExpToSelection( type );
}
}
}
RegExp* AltnWidget::selection() const
{
if ( isSelected() )
return regExp();
else {
TQPtrListIterator<RegExpWidget> it(_children);
++it; // Skip past DragAccepter
for ( ; *it; it+=2 ) {
if ( (*it)->hasSelection() ) {
return (*it)->selection();
}
}
}
qFatal("Selection not found");
return 0; // compiler shut up.
}
bool AltnWidget::validateSelection() const
{
if ( _isSelected ) {
return true;
}
bool foundASelection = false;
TQPtrListIterator<RegExpWidget> it(_children);
++it; // Skip past DragAccepter
for ( ; *it; it+=2 ) {
if ( (*it)->hasSelection() ) {
if ( foundASelection ) {
KMessageBox::information( const_cast<AltnWidget*>(this),
i18n( "Selecting several alternatives is "
"currently not supported." ),
i18n( "Selection Invalid" ) );
_editorWindow->clearSelection( true );
return false;
}
else {
foundASelection = true;
}
}
}
return true;
}
void AltnWidget::updateDrawLineInfo()
{
for ( unsigned int i=0; i < _children.count(); i+=2 ) {
bool line = ( i != 0 && i!= _children.count()-1 );
DragAccepter *accepter = dynamic_cast<DragAccepter*>(_children.at(i));
if (accepter)
accepter->setDrawLine( line );
}
}
void AltnWidget::deleteSelection()
{
MultiContainerWidget::deleteSelection();
updateDrawLineInfo();
}
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