void DisplayGroup::addChild( Property* child, int index )
{
Display* display = qobject_cast<Display*>( child );
if( !display )
{
Display::addChild( child, index );
return;
}
if( index < 0 || index > numChildren() )
{
index = numChildren();
}
int disp_index = index - Display::numChildren();
if( disp_index < 0 )
{
disp_index = 0;
}
if( model_ )
{
model_->beginInsert( this, index );
}
displays_.insert( disp_index, display );
Q_EMIT displayAdded( display );
child_indexes_valid_ = false;
display->setModel( model_ );
display->setParent( this );
if( model_ )
{
model_->endInsert();
}
Q_EMIT childListChanged( this );
}
Display* DisplayGroup::takeDisplay( Display* child )
{
Display* result = NULL;
int num_displays = displays_.size();
for( int i = 0; i < num_displays; i++ )
{
if( displays_.at( i ) == child )
{
if( model_ )
{
model_->beginRemove( this, Display::numChildren() + i, 1 );
}
// printf(" displaygroup3 displays_.takeAt( %d )\n", i );
result = displays_.takeAt( i );
Q_EMIT displayRemoved( result );
result->setParent( NULL );
result->setModel( NULL );
child_indexes_valid_ = false;
if( model_ )
{
model_->endRemove();
}
Q_EMIT childListChanged( this );
break;
}
}
return result;
}
void Property::removeChildren( int start_index, int count )
{
if( count < 0 )
{
count = children_.size() - start_index;
}
if( count == 0 )
return;
if( model_ )
{
model_->beginRemove( this, start_index, count );
}
// Destroy my children.
for( int i = start_index; i < start_index + count; i++ )
{
Property* child = children_.at( i );
child->setParent( NULL ); // prevent child destructor from calling getParent()->takeChild().
delete child;
}
children_.erase( children_.begin() + start_index, children_.begin() + start_index + count );
child_indexes_valid_ = false;
if( model_ )
{
model_->endRemove();
}
Q_EMIT childListChanged( this );
}
void Property::addChild( Property* child, int index )
{
if( !child )
{
return;
}
int num_children = children_.size();
if( index < 0 || index > num_children )
{
index = num_children;
}
if( model_ )
{
model_->beginInsert( this, index );
}
children_.insert( index, child );
child_indexes_valid_ = false;
child->setModel( model_ );
child->parent_ = this;
if( model_ )
{
model_->endInsert();
}
Q_EMIT childListChanged( this );
}
void DisplayGroup::addDisplay( Display* child )
{
if( model_ )
{
model_->beginInsert( this, numChildren(), 1 );
}
addDisplayWithoutSignallingModel( child );
if( model_ )
{
model_->endInsert();
}
Q_EMIT childListChanged( this );
}
Property* Property::takeChildAt( int index )
{
if( index < 0 || index >= children_.size() )
{
return NULL;
}
if( model_ )
{
model_->beginRemove( this, index, 1 );
}
Property* child = children_.takeAt( index );
child->setModel( NULL );
child->parent_ = NULL;
child_indexes_valid_ = false;
if( model_ )
{
model_->endRemove();
}
Q_EMIT childListChanged( this );
return child;
}
void DisplayGroup::removeAllDisplays()
{
int num_non_display_children = Display::numChildren();
if( model_ )
{
model_->beginRemove( this, num_non_display_children, displays_.size() );
}
for( int i = displays_.size() - 1; i >= 0; i-- )
{
// printf(" displaygroup2 displays_.takeAt( %d )\n", i );
Display* child = displays_.takeAt( i );
Q_EMIT displayRemoved( child );
child->setParent( NULL ); // prevent child destructor from calling getParent()->takeChild().
delete child;
}
if( model_ )
{
model_->endRemove();
}
Q_EMIT childListChanged( this );
}
Property* DisplayGroup::takeChildAt( int index )
{
if( index < Display::numChildren() )
{
return Display::takeChildAt( index );
}
int disp_index = index - Display::numChildren();
if( model_ )
{
model_->beginRemove( this, index, 1 );
}
// printf(" displaygroup5 displays_.takeAt( %d ) ( index = %d )\n", disp_index, index );
Display* child = displays_.takeAt( disp_index );
Q_EMIT displayRemoved( child );
child->setModel( NULL );
child->setParent( NULL );
child_indexes_valid_ = false;
if( model_ )
{
model_->endRemove();
}
Q_EMIT childListChanged( this );
return child;
}
void Property::moveChild( int from_index, int to_index )
{
children_.move( from_index, to_index );
child_indexes_valid_ = false;
Q_EMIT childListChanged( this );
}
