[composer] Refresh view action now also reloads html items and refreshes attribute table features.

Author: nyalldawson

python/core/composer/qgscomposition.sip

@@ -408,6 +408,12 @@ class QgsComposition : QGraphicsScene
     @note added in version 2.2*/
     void updateBounds();
 
+    /**Forces items in the composition to refresh. For instance, this causes maps to redraw
+     * and rebuild cached images, html items to reload their source url, and attribute tables
+     * to refresh their contents.
+    @note added in version 2.3*/
+    void refreshItems();
+
   protected:
     void init();
 
@@ -441,4 +447,7 @@ class QgsComposition : QGraphicsScene
     void composerTableAdded( QgsComposerAttributeTable* table );
     /**Is emitted when a composer item has been removed from the scene*/
     void itemRemoved( QgsComposerItem* );
+    
+    /**Is emitted when item in the composition must be refreshed*/
+    void refreshItemsTriggered();    
 };

src/app/composer/qgscomposer.cpp

@@ -1022,6 +1022,7 @@ void QgsComposer::on_mActionRefreshView_triggered()
     }
   }
 
+  mComposition->refreshItems();
   mComposition->update();
 }
 

src/core/composer/qgscomposerattributetable.cpp

@@ -66,6 +66,11 @@ QgsComposerAttributeTable::QgsComposerAttributeTable( QgsComposition* compositio
     }
   }
   connect( QgsMapLayerRegistry::instance(), SIGNAL( layerWillBeRemoved( QString ) ), this, SLOT( removeLayer( const QString& ) ) );
+
+  if ( mComposition )
+  {
+    connect( mComposition, SIGNAL( refreshItemsTriggered() ), this, SLOT( refreshAttributes() ) );
+  }
 }
 
 QgsComposerAttributeTable::~QgsComposerAttributeTable()

src/core/composer/qgscomposerhtml.cpp

@@ -36,6 +36,7 @@ QgsComposerHtml::QgsComposerHtml( QgsComposition* c, bool createUndoCommands ):
   if ( mComposition )
   {
     QObject::connect( mComposition, SIGNAL( itemRemoved( QgsComposerItem* ) ), this, SLOT( handleFrameRemoval( QgsComposerItem* ) ) );
+    connect( mComposition, SIGNAL( refreshItemsTriggered() ), this, SLOT( loadHtml() ) );
   }
 }
 

src/core/composer/qgscomposition.cpp

@@ -181,6 +181,11 @@ void QgsComposition::updateBounds()
   setSceneRect( compositionBounds() );
 }
 
+void QgsComposition::refreshItems()
+{
+  emit refreshItemsTriggered();
+}
+
 QRectF QgsComposition::compositionBounds() const
 {
   //start with an empty rectangle

src/core/composer/qgscomposition.h

@@ -464,6 +464,12 @@ class CORE_EXPORT QgsComposition : public QGraphicsScene
     @note added in version 2.2*/
     void updateBounds();
 
+    /**Forces items in the composition to refresh. For instance, this causes maps to redraw
+     * and rebuild cached images, html items to reload their source url, and attribute tables
+     * to refresh their contents.
+    @note added in version 2.3*/
+    void refreshItems();
+
   protected:
     void init();
 
@@ -596,6 +602,9 @@ class CORE_EXPORT QgsComposition : public QGraphicsScene
     /**Is emitted when a composer item has been removed from the scene*/
     void itemRemoved( QgsComposerItem* );
 
+    /**Is emitted when item in the composition must be refreshed*/
+    void refreshItemsTriggered();
+
     /**Is emitted when the composition has an updated status bar message for the composer window*/
     void statusMsgChanged( QString message );
 };