Fix attribute dialog crash on close

src/app/qgisappinterface.cpp

@@ -628,7 +628,7 @@ QDialog* QgisAppInterface::getFeatureForm( QgsVectorLayer *l, QgsFeature &featur
   myDa.setEllipsoid( QgsProject::instance()->readEntry( "Measure", "/Ellipsoid", GEO_NONE ) );
 
   QgsAttributeDialog *dialog = new QgsAttributeDialog( l, &feature, false, NULL, true );
-  return dialog->dialog();
+  return dialog;
 }
 
 QgsVectorLayerTools* QgisAppInterface::vectorLayerTools()

src/app/qgsfeatureaction.cpp

@@ -64,11 +64,11 @@ QgsAttributeDialog *QgsFeatureAction::newDialog( bool cloneFeature )
 
   if ( mLayer->actions()->size() > 0 )
   {
-    dialog->dialog()->setContextMenuPolicy( Qt::ActionsContextMenu );
+    dialog->setContextMenuPolicy( Qt::ActionsContextMenu );
 
-    QAction *a = new QAction( tr( "Run actions" ), dialog->dialog() );
+    QAction *a = new QAction( tr( "Run actions" ), dialog );
     a->setEnabled( false );
-    dialog->dialog()->addAction( a );
+    dialog->addAction( a );
 
     for ( int i = 0; i < mLayer->actions()->size(); i++ )
     {
@@ -77,11 +77,11 @@ QgsAttributeDialog *QgsFeatureAction::newDialog( bool cloneFeature )
       if ( !action.runable() )
         continue;
 
-      QgsFeatureAction *a = new QgsFeatureAction( action.name(), *f, mLayer, i, -1, dialog->dialog() );
-      dialog->dialog()->addAction( a );
+      QgsFeatureAction *a = new QgsFeatureAction( action.name(), *f, mLayer, i, -1, dialog );
+      dialog->addAction( a );
       connect( a, SIGNAL( triggered() ), a, SLOT( execute() ) );
 
-      QAbstractButton *pb = dialog->dialog()->findChild<QAbstractButton *>( action.name() );
+      QAbstractButton *pb = dialog->findChild<QAbstractButton *>( action.name() );
       if ( pb )
         connect( pb, SIGNAL( clicked() ), a, SLOT( execute() ) );
     }

src/gui/editorwidgets/qgsrelationreferencewidget.cpp

@@ -182,14 +182,14 @@ void QgsRelationReferenceWidget::referenceChanged( int index )
       // Backup old dialog and delete only after creating the new dialog, so we can "hot-swap" the contained QgsFeature
       QgsAttributeDialog* oldDialog = mAttributeDialog;
 
-      if ( mAttributeDialog && mAttributeDialog->dialog() )
+      if ( mAttributeDialog )
       {
-        mAttributeEditorLayout->removeWidget( mAttributeDialog->dialog() );
+        mAttributeEditorLayout->removeWidget( mAttributeDialog );
       }
 
       // TODO: Get a proper QgsDistanceArea thingie
       mAttributeDialog = new QgsAttributeDialog( mReferencedLayer, new QgsFeature( feat ), true, mAttributeEditorFrame, false, mEditorContext );
-      QWidget* attrDialog = mAttributeDialog->dialog();
+      QWidget* attrDialog = mAttributeDialog;
       attrDialog->setWindowFlags( Qt::Widget ); // Embed instead of opening as window
       mAttributeEditorLayout->addWidget( attrDialog );
       attrDialog->show();

src/gui/qgsattributedialog.cpp

@@ -25,7 +25,7 @@
 
 
 QgsAttributeDialog::QgsAttributeDialog( QgsVectorLayer* vl, QgsFeature* thepFeature, bool featureOwner, QgsDistanceArea myDa, QWidget* parent, bool showDialogButtons )
-    : QObject( parent )
+    : QDialog( parent )
     , mHighlight( 0 )
 {
   QgsAttributeEditorContext context;
@@ -40,7 +40,7 @@ QgsAttributeDialog::QgsAttributeDialog( QgsVectorLayer* vl, QgsFeature* thepFeat
 }
 
 QgsAttributeDialog::QgsAttributeDialog( QgsVectorLayer* vl, QgsFeature* thepFeature, bool featureOwner, QWidget* parent, bool showDialogButtons, QgsAttributeEditorContext context )
-    : QObject( parent )
+    : QDialog( parent )
     , mHighlight( 0 )
 {
   init( vl, thepFeature, context, parent );
@@ -60,25 +60,17 @@ QgsAttributeDialog::~QgsAttributeDialog()
     delete mHighlight;
   }
 
-  delete mDialog;
+  saveGeometry();
 }
 
 void QgsAttributeDialog::saveGeometry()
 {
-  if ( mDialog )
-  {
-    QSettings settings;
-    settings.setValue( mSettingsPath + "geometry", mDialog->saveGeometry() );
-  }
+  QSettings().setValue( mSettingsPath + "geometry", QDialog::saveGeometry() );
 }
 
 void QgsAttributeDialog::restoreGeometry()
 {
-  if ( mDialog )
-  {
-    QSettings settings;
-    mDialog->restoreGeometry( settings.value( mSettingsPath + "geometry" ).toByteArray() );
-  }
+  QDialog::restoreGeometry( QSettings().value( mSettingsPath + "geometry" ).toByteArray() );
 }
 
 void QgsAttributeDialog::setHighlight( QgsHighlight* h )
@@ -91,73 +83,28 @@ void QgsAttributeDialog::setHighlight( QgsHighlight* h )
 void QgsAttributeDialog::accept()
 {
   mAttributeForm->save();
+  QDialog::accept();
 }
 
-int QgsAttributeDialog::exec()
+void QgsAttributeDialog::show( bool autoDelete )
 {
-  if ( mDialog )
-  {
-    return mDialog->exec();
-  }
-  else
-  {
-    QgsDebugMsg( "No dialog" );
-    return QDialog::Accepted;
-  }
-}
+  if ( autoDelete )
+    setAttribute( Qt::WA_DeleteOnClose );
 
-void QgsAttributeDialog::show()
-{
-  if ( mDialog )
-  {
-    mDialog->setAttribute( Qt::WA_DeleteOnClose );
-    mDialog->show();
-    mDialog->raise();
-    mDialog->activateWindow();
-    mDialog->installEventFilter( this );
-    setParent( mDialog );
-  }
-}
-
-bool QgsAttributeDialog::eventFilter( QObject* obj, QEvent* e )
-{
-  if ( mHighlight && obj == mDialog )
-  {
-    switch ( e->type() )
-    {
-      case QEvent::WindowActivate:
-        mHighlight->show();
-        break;
-
-      case QEvent::WindowDeactivate:
-        mHighlight->hide();
-        break;
-
-      default:
-        break;
-    }
-  }
-
-  return false;
-}
-
-void QgsAttributeDialog::onDialogFinished( int result )
-{
-  Q_UNUSED( result )
-  saveGeometry();
+  QDialog::show();
+  raise();
+  activateWindow();
 }
 
 void QgsAttributeDialog::init( QgsVectorLayer* layer, QgsFeature* feature, QgsAttributeEditorContext& context, QWidget* parent )
 {
-  mDialog = new QDialog( parent );
-  mDialog->setWindowTitle( tr( "Feature Attributes" ) );
-  mDialog->setLayout( new QGridLayout() );
-  mDialog->layout()->setMargin( 0 );
+  setWindowTitle( tr( "Feature Attributes" ) );
+  setLayout( new QGridLayout() );
+  layout()->setMargin( 0 );
   mAttributeForm = new QgsAttributeForm( layer, *feature, context, parent );
-  mDialog->layout()->addWidget( mAttributeForm );
+  layout()->addWidget( mAttributeForm );
   QDialogButtonBox* buttonBox = mAttributeForm->findChild<QDialogButtonBox*>();
-  connect( buttonBox, SIGNAL( rejected() ), mDialog, SLOT( reject() ) );
-  connect( buttonBox, SIGNAL( accepted() ), mDialog, SLOT( accept() ) );
-  connect( mDialog, SIGNAL( finished( int ) ), this, SLOT( onDialogFinished( int ) ) );
+  connect( buttonBox, SIGNAL( rejected() ), this, SLOT( reject() ) );
+  connect( buttonBox, SIGNAL( accepted() ), this, SLOT( accept() ) );
   restoreGeometry();
 }

src/gui/qgsattributedialog.h

@@ -22,7 +22,6 @@
 #include "qgsattributeform.h"
 
 #include <QDialog>
-#include <QPointer>
 
 class QLayout;
 
@@ -33,7 +32,7 @@ class QgsHighlight;
 class QgsVectorLayer;
 class QgsVectorLayerTools;
 
-class GUI_EXPORT QgsAttributeDialog : public QObject
+class GUI_EXPORT QgsAttributeDialog : public QDialog
 {
     Q_OBJECT
 
@@ -83,7 +82,14 @@ class GUI_EXPORT QgsAttributeDialog : public QObject
      */
     void setHighlight( QgsHighlight *h );
 
-    QDialog *dialog() { return mDialog; }
+    /**
+     * @brief Returns reference to self. Only here for legacy compliance
+     *
+     * @return this
+     *
+     * @deprecated Do not use. Just use this object itself. Or QgsAttributeForm if you want to embed.
+     */
+    Q_DECL_DEPRECATED QDialog *dialog() { return this; }
 
     QgsAttributeForm* attributeForm() { return mAttributeForm; }
 
@@ -115,25 +121,13 @@ class GUI_EXPORT QgsAttributeDialog : public QObject
   public slots:
     void accept();
 
-    //! Show the dialog and block the application until the dialog is closed. Ownership of this object is not changed.
-    int exec();
-
     //! Show the dialog non-blocking. Reparents this dialog to be a child of the dialog form and is deleted when
     //! closed.
-    void show();
-
-  protected:
-    bool eventFilter( QObject *obj, QEvent *e );
-
-  private slots:
-    void onDialogFinished( int result );
+    void show( bool autoDelete = true );
 
   private:
     void init( QgsVectorLayer* layer, QgsFeature* feature, QgsAttributeEditorContext& context, QWidget* parent );
 
-    // Using a guarded pointer we can savely delete the dialog in the destructor even
-    // when the dialog is this object's parent
-    QPointer<QDialog> mDialog;
     QString mSettingsPath;
     // Used to sync multiple widgets for the same field
     QgsHighlight *mHighlight;