Flag project as dirty when attribute table configuration changes

Author: m-kuhn

src/core/qgsattributetableconfig.cpp

@@ -228,6 +228,11 @@ void QgsAttributeTableConfig::setColumnHidden( int column, bool hidden )
   mColumns[ column ].hidden = hidden;
 }
 
+bool QgsAttributeTableConfig::operator!=( const QgsAttributeTableConfig& other ) const
+{
+  return mSortExpression != other.mSortExpression || mColumns != other.mColumns || mActionWidgetStyle != other.mActionWidgetStyle;
+}
+
 void QgsAttributeTableConfig::writeXml( QDomNode& node ) const
 {
   QDomDocument doc( node.ownerDocument() );
@@ -263,3 +268,8 @@ void QgsAttributeTableConfig::writeXml( QDomNode& node ) const
 
   node.appendChild( configElement );
 }
+
+bool QgsAttributeTableConfig::ColumnConfig::operator== ( const ColumnConfig& other ) const
+{
+  return type == other.type && name == other.name && hidden == other.hidden;
+}

src/core/qgsattributetableconfig.h

@@ -52,6 +52,8 @@ class CORE_EXPORT QgsAttributeTableConfig
           , width( -1 )
       {}
 
+      bool operator== ( const ColumnConfig& other ) const;
+
       Type type;    //!< The type of this column.
       QString name; //!< The name of the attribute if this column represents a field
       bool hidden;  //!< Flag that controls if the column is hidden
@@ -165,6 +167,11 @@ class CORE_EXPORT QgsAttributeTableConfig
      */
     void setColumnHidden( int column, bool hidden );
 
+    /**
+     * Compare this configuration to other.
+     */
+    bool operator!= ( const QgsAttributeTableConfig& other ) const;
+
   private:
     QVector<ColumnConfig> mColumns;
     ActionWidgetStyle mActionWidgetStyle;

src/core/qgsmaplayer.h

@@ -672,6 +672,12 @@ class CORE_EXPORT QgsMapLayer : public QObject
      */
     void legendChanged();
 
+    /**
+     * Emitted whenever the configuration is changed. The project listens to this signal
+     * to be marked as dirty.
+     */
+    void configChanged();
+
   protected:
     /** Set the extent */
     virtual void setExtent( const QgsRectangle &rect );

src/core/qgsproject.cpp

@@ -1050,6 +1050,8 @@ void QgsProject::onMapLayersAdded( const QList<QgsMapLayer*>& layers )
       }
       vlayer->dataProvider()->setProviderProperty( QgsVectorDataProvider::EvaluateDefaultValues, evaluateDefaultValues() );
     }
+
+    connect( layer, SIGNAL( configChanged() ), this, SLOT( setDirty() ) );
   }
 }
 

src/core/qgsproject.h

@@ -116,13 +116,6 @@ class CORE_EXPORT QgsProject : public QObject
      */
     Q_DECL_DEPRECATED inline void dirty( bool b ) { setDirty( b ); }
 
-    /**
-     * Flag the project as dirty (modified). If this flag is set, the user will
-     * be asked to save changes to the project before closing the current project.
-     *
-     * @note added in 2.4
-     */
-    void setDirty( bool b );
     //@}
 
 
@@ -470,6 +463,17 @@ class CORE_EXPORT QgsProject : public QObject
     //! Emitted when the list of layer which are excluded from map identification changes
     void nonIdentifiableLayersChanged( QStringList nonIdentifiableLayers );
 
+  public slots:
+
+    /**
+     * Flag the project as dirty (modified). If this flag is set, the user will
+     * be asked to save changes to the project before closing the current project.
+     *
+     * @note added in 2.4
+     * @note promoted to public slot in 2.16
+     */
+    void setDirty( bool b = true );
+
   private slots:
     void onMapLayersAdded( const QList<QgsMapLayer*>& layers );
     void cleanTransactionGroups( bool force = false );

src/core/qgsvectorlayer.cpp

@@ -3752,7 +3752,11 @@ QgsAttributeTableConfig QgsVectorLayer::attributeTableConfig() const
 
 void QgsVectorLayer::setAttributeTableConfig( const QgsAttributeTableConfig& attributeTableConfig )
 {
-  mAttributeTableConfig = attributeTableConfig;
+  if ( mAttributeTableConfig != attributeTableConfig )
+  {
+    mAttributeTableConfig = attributeTableConfig;
+    emit configChanged();
+  }
 }
 
 void QgsVectorLayer::setDiagramLayerSettings( const QgsDiagramLayerSettings& s )