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fix crashes on exit by being mindful of our pointers

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This commit is contained in:
Leo Franchi
2011-02-02 17:58:11 -05:00
parent 27681f8b4c
commit 1443e1a591
2 changed files with 32 additions and 27 deletions
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53
src/libtomahawk/playlist/dynamic/widgets/DynamicControlWrapper.cpp
View File

@@ -36,17 +36,15 @@ DynamicControlWrapper::DynamicControlWrapper( const Tomahawk::dyncontrol_ptr& co
, m_minusButton( 0 )
, m_control( control )
, m_typeSelector( 0 )
, m_matchSelector( 0 )
, m_entryWidget( 0 )
, m_layout( layout )
, m_layout( QWeakPointer< QGridLayout >( layout ) )
{
qDebug() << "CREATING DYNAMIC CONTROL WRAPPER WITH ROW:" << row << layout;
m_typeSelector = new QComboBox( m_parent );
m_matchSelector = control->matchSelector();
m_entryWidget = control->inputField();
m_matchSelector = QWeakPointer<QWidget>( control->matchSelector() );
m_entryWidget = QWeakPointer<QWidget>( control->inputField() );
m_minusButton = initButton( m_parent );
m_minusButton->setIcon( QIcon( RESPATH "images/list-remove.png" ) );
@@ -59,10 +57,10 @@ DynamicControlWrapper::DynamicControlWrapper( const Tomahawk::dyncontrol_ptr& co
m_plusL->addWidget( m_minusButton );
m_plusL->addWidget( createDummy( m_minusButton, m_parent ) ); // :-(
connect( m_typeSelector, SIGNAL( activated( QString) ), SLOT( typeSelectorChanged( QString ) ) );
connect( m_typeSelector, SIGNAL( activated( QString) ), SLOT( typeSelectorChanged( QString ) ) );
connect( m_control.data(), SIGNAL( changed() ), this, SIGNAL( changed() ) );
m_layout->addWidget( m_typeSelector, row, 0, Qt::AlignLeft );
m_layout.data()->addWidget( m_typeSelector, row, 0, Qt::AlignLeft );
if( !control.isNull() ) {
foreach( const QString& type, control->typeSelectors() )
@@ -71,7 +69,7 @@ DynamicControlWrapper::DynamicControlWrapper( const Tomahawk::dyncontrol_ptr& co
typeSelectorChanged( m_control.isNull() ? "" : m_control->selectedType(), true );
m_layout->addLayout( m_plusL, m_row, 3, Qt::AlignCenter );
m_layout.data()->addLayout( m_plusL, m_row, 3, Qt::AlignCenter );
m_plusL->setCurrentIndex( 0 );
@@ -83,12 +81,14 @@ DynamicControlWrapper::~DynamicControlWrapper()
// we don't want to auto-delete them since the control should own them
// if we delete them, then the control will be holding on to null ptrs
removeFromLayout();
m_control->inputField()->setParent( 0 );
m_control->matchSelector()->setParent( 0 );
if( !m_entryWidget.isNull() )
m_control->inputField()->setParent( 0 );
if( !m_matchSelector.isNull() )
m_control->matchSelector()->setParent( 0 );
delete m_typeSelector;
delete m_minusButton;
delete m_plusL;
}
dyncontrol_ptr
@@ -100,10 +100,15 @@ DynamicControlWrapper::control() const
void
DynamicControlWrapper::removeFromLayout()
{
m_layout->removeWidget( m_typeSelector );
m_layout->removeWidget( m_matchSelector );
m_layout->removeWidget( m_entryWidget );
m_layout->removeItem( m_plusL );
if( m_layout.isNull() )
return;
if( !m_matchSelector.isNull() )
m_layout.data()->removeWidget( m_matchSelector.data() );
if( !m_entryWidget.isNull() )
m_layout.data()->removeWidget( m_entryWidget.data() );
m_layout.data()->removeWidget( m_typeSelector );
m_layout.data()->removeItem( m_plusL );
}
@@ -132,9 +137,9 @@ QWidget* DynamicControlWrapper::createDummy( QWidget* fromW, QWidget* parent )
void
DynamicControlWrapper::typeSelectorChanged( const QString& type, bool firstLoad )
{
Q_ASSERT( m_layout );
m_layout->removeWidget( m_matchSelector );
m_layout->removeWidget( m_entryWidget );
Q_ASSERT( !m_layout.isNull() );
m_layout.data()->removeWidget( m_matchSelector.data() );
m_layout.data()->removeWidget( m_entryWidget.data() );
if( m_control->selectedType() != type && !firstLoad )
m_control->setSelectedType( type );
@@ -146,14 +151,14 @@ DynamicControlWrapper::typeSelectorChanged( const QString& type, bool firstLoad
if( m_control->matchSelector() ) {
m_matchSelector = m_control->matchSelector();
m_layout->addWidget( m_matchSelector, m_row, 1, Qt::AlignCenter );
m_matchSelector->show();
m_matchSelector = QWeakPointer<QWidget>( m_control->matchSelector() );
m_layout.data()->addWidget( m_matchSelector.data(), m_row, 1, Qt::AlignCenter );
m_matchSelector.data()->show();
}
if( m_control->inputField() ) {
m_entryWidget = m_control->inputField();
m_layout->addWidget( m_entryWidget, m_row, 2 );
m_entryWidget->show();
m_entryWidget = QWeakPointer<QWidget>( m_control->inputField() );
m_layout.data()->addWidget( m_entryWidget.data(), m_row, 2 );
m_entryWidget.data()->show();
}
emit changed();

6
src/libtomahawk/playlist/dynamic/widgets/DynamicControlWrapper.h
View File

@@ -68,9 +68,9 @@ private:
dyncontrol_ptr m_control;
QComboBox* m_typeSelector;
QWidget* m_matchSelector;
QWidget* m_entryWidget;
QGridLayout* m_layout;
QWeakPointer<QWidget> m_matchSelector;
QWeakPointer<QWidget> m_entryWidget;
QWeakPointer<QGridLayout> m_layout;
};
};