1 files changed, 400 insertions, 0 deletions
diff --git a/kregexpeditor/concwidget.cpp b/kregexpeditor/concwidget.cpp
new file mode 100644
index 0000000..f67c49b
--- /dev/null
+++ b/kregexpeditor/concwidget.cpp
@@ -0,0 +1,400 @@
+/*
+ *  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.
+ **/
+#include "concregexp.h"
+#include "concwidget.h"
+#include "dragaccepter.h"
+
+#include <qpainter.h>
+
+ConcWidget::ConcWidget(RegExpEditorWindow* editorWindow, QWidget *parent,
+                       const char *name)
+  :MultiContainerWidget(editorWindow, parent, name == 0 ? "concwidget" : name)
+{
+  init();
+  DragAccepter *accepter = new DragAccepter(editorWindow, this);
+  accepter->show();
+  _children.append(accepter);
+}
+
+
+ConcWidget::ConcWidget(RegExpEditorWindow* editorWindow, RegExpWidget *child,
+                       QWidget *parent, const char *name)
+  :MultiContainerWidget(editorWindow, parent, name == 0 ? "concwidget" : name)
+{
+  init();
+  DragAccepter *accepter = new DragAccepter(editorWindow, this);
+  _children.append(accepter);
+  child->reparent(this, QPoint(0,0), false);
+  addNewChild(accepter, child);
+}
+
+ConcWidget::ConcWidget( RegExpEditorWindow* editorWindow, ConcWidget* origConc,
+                    unsigned int start, unsigned int end)
+  :MultiContainerWidget(editorWindow, 0, "Splitted ConcWidget")
+{
+  init();
+  _children.prepend( new DragAccepter(editorWindow, this) );
+  for (unsigned int i = end; i >= start; i--) {
+    RegExpWidget* child = origConc->_children.take( i );
+    _children.prepend( child );
+    child->reparent( this, QPoint(0,0), false);
+  }
+  _children.prepend( new DragAccepter(editorWindow, this) );
+}
+
+ConcWidget::ConcWidget( ConcRegExp* regexp, RegExpEditorWindow* editorWindow,
+            QWidget* parent, const char* name )
+  :MultiContainerWidget( editorWindow, parent, name == 0 ? "concwidget" : name )
+{
+  init();
+  DragAccepter *accepter = new DragAccepter(editorWindow, this);
+  _children.append(accepter);
+
+  RegExpList list = regexp->children();
+  for ( RegExpListIt it(list); *it; ++it ) {
+    RegExpWidget* child = WidgetFactory::createWidget( *it, editorWindow, this );
+    append( child );
+  }
+}
+
+void ConcWidget::init()
+{
+  _maxSelectedHeight = 0;
+}
+
+
+QSize ConcWidget::sizeHint() const
+{
+  int childrenWidth = 0;
+  int childrenHeight = 0;
+  QPtrListIterator<RegExpWidget> it(_children);
+
+  for ( ; *it; ++it) {
+    QSize thisChildSize = (*it)->sizeHint();
+    childrenWidth += thisChildSize.width();
+    childrenHeight = QMAX(childrenHeight, thisChildSize.height());
+  }
+
+  return QSize(childrenWidth, childrenHeight);
+}
+
+void ConcWidget::paintEvent( QPaintEvent *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)) ) );
+
+  if ( _children.count() == 1) {
+    // There is only an accepter, lets give it all the space.
+    _children.at(0)->setGeometry( 0, 0, size().width(), size().height() );
+  }
+  else {
+    QSize myReqSize = sizeHint();
+    QSize mySize(QMAX(myReqSize.width(), size().width()),
+                 QMAX(myReqSize.height(), size().height()));
+
+    // If the widget needs less space than it can get then this space should
+    // be given to the leftmost and rightmost accepter. So lets calculate
+    // this extra space.
+    int extra = 0;
+    if (size().width() > myReqSize.width()) {
+      extra = (size().width() - myReqSize.width())/2;
+    }
+
+    QPainter painter( this );
+
+    drawPossibleSelection( painter, mySize );
+
+    int lastHeight = 0;
+    int offset = 0;
+
+    for (unsigned int i = 1; i < _children.count(); i += 2 ) {
+      DragAccepter* accepter = dynamic_cast<DragAccepter*>(_children.at(i-1));
+      if (!accepter)
+        continue;
+      RegExpWidget* child = _children.at(i);
+
+      QSize childSize = child->sizeHint();
+      QSize curChildSize = child->size();
+
+      //----------------------------- first place the accepter
+      int x = offset;
+      int w = accepter->sizeHint().width();
+      if ( i == 1 ) w+= extra;
+      int h = QMAX( lastHeight, childSize.height() );
+      int y = (mySize.height() - h)/2;
+      accepter->setGeometry( x, y, w, h );
+
+      offset += w;
+      lastHeight = childSize.height();
+
+
+      //------------------------------ Draw Accepter selection
+      if ( accepter->isSelected() ) {
+        y = (mySize.height()-_maxSelectedHeight)/2;
+        h = _maxSelectedHeight;
+        painter.fillRect( x, y, w, h, QBrush( gray ) );
+      }
+
+      //-------------------------------------- place the child
+      x = offset;
+      h = childSize.height();
+      w = childSize.width();
+      y = (mySize.height() - h)/2;
+      child->setGeometry( x, y, w, h );
+      if ( childSize != curChildSize ) {
+        // I resized the child, so give it a chance to relect thus.
+        child->update();
+      }
+
+      offset += w;
+
+      //------------------------------ Draw Accepter selection
+      if ( child->isSelected() ) {
+        y = (mySize.height()-_maxSelectedHeight)/2;
+        h = _maxSelectedHeight;
+        painter.fillRect( x, y, w, h, QBrush( gray ) );
+      }
+    }
+
+    //---------------------- Finally place the last accepter.
+    DragAccepter* accepter =
+      dynamic_cast<DragAccepter*>(_children.at(_children.count()-1));
+    // dynamic_cast is ASSERTed at top
+    int x = offset;
+    int h = lastHeight;
+    int w = accepter->sizeHint().width() + extra;
+    int y = (mySize.height()-h)/2;
+    accepter->setGeometry( x, y, w, h );
+  }
+  MultiContainerWidget::paintEvent( e );
+}
+
+void ConcWidget::mousePressEvent ( QMouseEvent* event )
+{
+  if ( event->button() == RightButton ) {
+    _editorWindow->showRMBMenu( _editorWindow->hasSelection() );
+  }
+  else {
+    RegExpWidget::mousePressEvent( event );
+  }
+}
+
+
+
+void ConcWidget::sizeAccepter( DragAccepter* accepter, int height, int totHeight )
+{
+  if (accepter->height() != height ) {
+    accepter->resize( accepter->width(), height );
+  }
+
+  if (accepter->y() != (totHeight - height)/2) {
+    accepter->move( accepter->x(), (totHeight - height)/2 );
+  }
+}
+
+RegExp* ConcWidget::regExp() const
+{
+  QPtrListIterator<RegExpWidget> it( _children );
+  ++it; // start with the second element.
+
+  if ( _children.count() == 3 ) {
+    // Exactly one child (and two drag accepters)
+    return (*it)->regExp();
+  }
+  else {
+    ConcRegExp *regexp = new ConcRegExp( isSelected() );
+
+    for ( ; *it; it+=2 ) {
+      regexp->addRegExp( (*it)->regExp() );
+    }
+    return regexp;
+  }
+}
+
+bool ConcWidget::updateSelection(bool parentSelected)
+{
+  bool isSel = _isSelected;
+  bool changed =  MultiContainerWidget::updateSelection( parentSelected );
+
+  _maxSelectedHeight = 0;
+
+  QPtrListIterator<RegExpWidget> it(_children);
+  ++it; // Skip past the first DragAccepter
+	for ( ; *it; it +=2  ) {
+    if ( (*it)->isSelected() ) {
+      _maxSelectedHeight = QMAX( _maxSelectedHeight, (*it)->sizeHint().height() );
+    }
+  }
+
+  changed = changed || isSel != _isSelected;
+  if ( changed ) {
+    repaint();
+  }
+
+  return changed;
+}
+
+void ConcWidget::getSelectionIndexes( int* start, int* end )
+{
+  *start = -1;
+  *end = -1;
+
+  // Start with element at index 1, and skip every second element, as we
+  // know they are dragAccepters.
+	for ( unsigned int index = 1; index< _children.count(); index += 2 ) {
+    RegExpWidget* child = _children.at(index);
+
+    if ( child->isSelected() ) {
+      // The child is selected at topmost level.
+      if ( *start == -1 ) {
+        *start = index;
+      }
+    }
+    else if ( *start != -1 ) {
+      // Found the end of the selection.
+      *end = index -2;
+      break;
+    }
+  }
+
+  if ( *start != -1 && *end == -1 )
+    *end = _children.count() -2;
+}
+
+void ConcWidget::applyRegExpToSelection( RegExpType type )
+{
+  int start, end;
+  getSelectionIndexes( &start, &end );
+
+  if ( start == -1 ) {
+    // No item selected at top level
+
+    QPtrListIterator<RegExpWidget> it(_children);
+    ++it; // Skip past the first DragAccepter
+    for ( ; *it ; it += 2 ) {
+      if ( (*it)->hasSelection() ) {
+        (*it)->applyRegExpToSelection( type );
+        break;
+      }
+    }
+  }
+  else {
+    // Apply RegExp to selection.
+    RegExpWidget* newElm = WidgetFactory::createWidget( _editorWindow, this, type );
+
+    if ( newElm ) {
+      ConcWidget* subSequence = new ConcWidget(_editorWindow, this, start, end);
+      newElm->setConcChild( subSequence );
+
+
+      subSequence->resize(0,0); // see note (1)
+      subSequence->reparent( newElm, QPoint(0,0), false);
+      _children.insert( start, newElm );
+      newElm->show();
+    }
+  }
+}
+
+bool ConcWidget::isSelected() const
+{
+  // A ConcWidget should be considered selected when all its elements has been selected
+  // otherwise empty ConcWidgets may be left behind when for example selection is deleted.
+  bool allSelected = true;
+  QPtrListIterator<RegExpWidget> it(_children);
+  ++it; // Skip past first DragAccepter.
+  for ( ; *it && allSelected; it += 2 ) {
+    allSelected = allSelected && (*it)->isSelected();
+  }
+
+  return allSelected;
+}
+
+RegExp* ConcWidget::selection() const
+{
+  if ( isSelected() )
+    return regExp();
+
+  bool foundAny = false;
+  bool foundMoreThanOne = false;
+  RegExp* regexp = 0;
+
+  QPtrListIterator<RegExpWidget> it(_children);
+  ++it; // Skip past the first DragAccepter
+  for ( ; (*it) ; it += 2 ) {
+    if ( (*it)->hasSelection() ) {
+      if (!foundAny) {
+        regexp = (*it)->selection();
+        foundAny = true;
+      }
+      else if ( !foundMoreThanOne ) {
+        ConcRegExp* reg = new ConcRegExp( isSelected() );
+        reg->addRegExp( regexp );
+        reg->addRegExp( (*it)->selection() );
+        regexp = reg;
+        foundMoreThanOne = true;
+      }
+      else {
+        dynamic_cast<ConcRegExp*>(regexp)->addRegExp( (*it)->selection() );
+      }
+    }
+  }
+
+  Q_ASSERT( foundAny );
+  return regexp;
+}
+
+void ConcWidget::addNewConcChild(DragAccepter *accepter, ConcWidget *other)
+{
+  for ( unsigned int i=0; i<_children.count(); i+= 2 ) {
+    RegExpWidget *ch = _children.at( i );
+    if ( ch == accepter ) {
+      // Move all the element from the `child' ConcWidget to this one.
+      // Do not copy the first one as this is a dragAccepter, and we place the widgets
+      // after this drag accepter.
+      // We must take them in pairs to avoid breaking the invariant for paintEvent,
+      // namely that every second element is a dragAccepter
+      for ( unsigned int j = other->_children.count()-1; j > 0 ; j-=2 ) {
+        RegExpWidget* newChildA = other->_children.take(j);
+        newChildA->reparent( this, QPoint(0,0), false);
+        _children.insert( i+1, newChildA );
+        RegExpWidget* newChildB = other->_children.take(j-1);
+        newChildB->reparent( this, QPoint(0,0), false);
+        _children.insert( i+1, newChildB );
+        newChildA->show();
+        newChildB->show();
+      }
+      delete other;
+      return;
+    }
+  }
+  qFatal("accepter not found");
+}
+
+bool ConcWidget::validateSelection() const
+{
+  bool cont = true;
+  QPtrListIterator<RegExpWidget> it(_children);
+  ++it; // skip past the DragAccepter.
+  for ( ; *it && cont; it += 2 ) {
+    cont = (*it)->validateSelection();
+  }
+  return cont;
+}