1 files changed, 265 insertions, 0 deletions
diff --git a/kregexpeditor/multicontainerwidget.cpp b/kregexpeditor/multicontainerwidget.cpp
new file mode 100644
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--- /dev/null
+++ b/kregexpeditor/multicontainerwidget.cpp
@@ -0,0 +1,265 @@
+/*
+ *  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 "multicontainerwidget.h"
+#include "dragaccepter.h"
+
+MultiContainerWidget::MultiContainerWidget( RegExpEditorWindow* editorWindow,
+                                            QWidget* parent, const char* name)
+  :RegExpWidget( editorWindow, parent, name )
+{
+}
+
+void MultiContainerWidget::append( RegExpWidget* child )
+{
+  child->reparent( this, QPoint(0,0), false );
+  _children.append( child );
+  _children.append( new DragAccepter( _editorWindow, this ) );
+}
+
+bool MultiContainerWidget::hasSelection() const
+{
+  if ( _isSelected )
+    return true;
+
+  QPtrListIterator<RegExpWidget> it(_children);
+  ++it; // Move past the first dragAccepter
+	for ( ; *it;  it += 2 ) {
+		if ( (*it)->hasSelection() ) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void MultiContainerWidget::clearSelection()
+{
+  _isSelected = false;
+	for ( unsigned int i = 0; i< _children.count(); i++ ) {
+		_children.at(i)->clearSelection();
+  }
+}
+
+
+void MultiContainerWidget::deleteSelection()
+{
+  // run from the back to the front (which we do since we delete items on the run)
+  // When deleting children, delete the drag accepter to its right.
+  for ( int i = (int) _children.count()-2; i > 0; i -=2 ) {
+
+    RegExpWidget* child = _children.at( i );
+    if ( child->isSelected() ) {
+      delete _children.at( i+1 );
+      _children.remove( i+1 );
+      delete child;
+      _children.remove(i);
+    }
+    else if ( child->hasSelection() ) {
+      child->deleteSelection();
+    }
+  }
+  _isSelected = false;
+  update();
+}
+
+void MultiContainerWidget::addNewChild(DragAccepter *accepter, RegExpWidget *child)
+{
+  for ( unsigned int i=0; i<_children.count(); i+= 2 ) {
+    RegExpWidget *ch = _children.at( i );
+    if ( ch == accepter ) {
+      // Insert the new child
+      _children.insert( i+1, child );
+
+      // Insert an accepter as the next element.
+      DragAccepter *accepter = new DragAccepter( _editorWindow, this );
+
+      _children.insert( i+2, accepter );
+
+      // These two show's must come here otherwise a paintevent
+      // will be invoked, where the invariant, that a accepter is located at
+      // every second element.
+      child->show();
+      accepter->show();
+
+      update();
+
+      return;
+    }
+  }
+  qFatal("Accepter not found in list");
+}
+
+bool MultiContainerWidget::updateSelection(bool parentSelected)
+{
+  bool changed = false;
+  bool isSel = _isSelected;
+  QMemArray<bool> oldState(_children.count());
+  QMemArray<bool> newState(_children.count());
+
+  for (int i = 0; i< (int)_children.count();i++) {
+    oldState[i] = _children.at(i)->isSelected();
+  }
+
+ RegExpWidget::updateSelection( parentSelected );
+
+  int first;
+  int last;
+
+  // scan for the first selected item.
+  for (first = 1; first < (int) _children.count(); first+= 2 ) {
+    RegExpWidget* child = _children.at(first);
+    changed = child->updateSelection( _isSelected ) || changed;
+    newState[first] = child->isSelected();
+    if ( child->isSelected() )
+      break;
+  }
+
+  // scan for the last selected item
+  for (last = _children.count()-2; last>first; last -= 2) {
+    RegExpWidget* child = _children.at(last);
+    changed = child->updateSelection( _isSelected ) || changed;
+    newState[last] = child->isSelected();
+    if ( child->isSelected() )
+      break;
+  }
+
+  // everything between first and last must be selected.
+  for (int j = first+2; j<last; j+=2) {
+    RegExpWidget* child = _children.at(j);
+
+   changed = child->updateSelection( true ) || changed;
+    newState[j] = true;
+  }
+
+  // update drag accepters.
+  for (int k = 0; k< (int) _children.count(); k+=2) {
+    RegExpWidget* child = _children.at(k);
+    bool select;
+    if ( k == 0 || k == (int)_children.count()-1) {
+      // The elements at the border is only selected if the parent is selected.
+      select = _isSelected;
+    }
+    else {
+      // Drag accepters in the middle is selected if the elements at both
+      // sides are selected.
+      select = newState[k-1] && newState[k+1];
+    }
+
+    bool isChildSel = child->isSelected();
+    DragAccepter *accepter = dynamic_cast<DragAccepter*>(child);
+    if (accepter)
+      accepter->_isSelected = select;
+    if ( select != isChildSel )
+      child->repaint();
+  }
+
+  changed = changed || isSel != _isSelected;
+  if ( changed ) {
+    repaint();
+  }
+
+  return changed;
+}
+
+
+
+QRect MultiContainerWidget::selectionRect() const
+{
+  if ( _isSelected )
+    return QRect( mapToGlobal( QPoint(0,0) ), size() );
+  else {
+    QRect res;
+    QPtrListIterator<RegExpWidget> it(_children);
+    ++it; // Move past the first dragAccepter
+    for ( ; *it; it +=2 ) {
+      if ( (*it)->hasSelection() ) {
+        QRect childSel = (*it)->selectionRect();
+        if ( res.isNull() )
+          res = childSel;
+        else {
+          QRect newRes;
+          newRes.setLeft( QMIN( res.left(), childSel.left() ) );
+          newRes.setTop( QMIN( res.top(), childSel.top() ) );
+          newRes.setRight( QMAX( res.right(), childSel.right() ) );
+          newRes.setBottom( QMAX( res.bottom(), childSel.bottom() ) );
+          res = newRes;
+        }
+      }
+    }
+    return res;
+  }
+}
+
+RegExpWidget* MultiContainerWidget::widgetUnderPoint( QPoint globalPos, bool justVisibleWidgets )
+{
+  unsigned int start, incr;
+  if ( justVisibleWidgets ) {
+    start = 1;
+    incr = 2;
+  }
+  else {
+    start = 0;
+    incr = 1;
+  }
+
+  for ( unsigned int i = start; i < _children.count(); i+=incr ) {
+    RegExpWidget* wid = _children.at(i)->widgetUnderPoint( globalPos, justVisibleWidgets );
+    if ( wid )
+      return wid;
+  }
+  if ( justVisibleWidgets )
+    return 0;
+  else {
+    return RegExpWidget::widgetUnderPoint( globalPos, justVisibleWidgets );
+  }
+}
+
+RegExpWidget* MultiContainerWidget::findWidgetToEdit( QPoint globalPos )
+{
+  for ( unsigned int i = 1; i < _children.count(); i+=2 ) {
+    RegExpWidget* wid = _children.at(i)->findWidgetToEdit( globalPos );
+    if ( wid )
+      return wid;
+  }
+  return 0;
+}
+
+void MultiContainerWidget::selectWidget( bool sel )
+{
+  RegExpWidget::selectWidget( sel );
+  QPtrListIterator<RegExpWidget> it(_children);
+  for ( ; *it ; ++it ) {
+    (*it)->selectWidget( sel );
+  }
+  update();
+}
+
+void MultiContainerWidget::updateAll()
+{
+  for ( QPtrListIterator<RegExpWidget> it(_children); *it ; ++it ) {
+    (*it)->updateAll();
+  }
+  RegExpWidget::updateAll();
+}
+
+void MultiContainerWidget::updateCursorRecursively()
+{
+  for ( QPtrListIterator<RegExpWidget> it(_children); *it ; ++it ) {
+    (*it)->updateCursorRecursively();
+  }
+  updateCursorShape();
+}