Project refactoring - part I

doc/api_break.dox

@@ -250,6 +250,7 @@ should now call QgsCoordinateReferenceSystem::invalidateCache() and QgsCoordinat
   - removeLegendLayerAction() moved to QgisInterface::removeCustomActionForLayerType()
 - QgsLegendModel was removed.
 - QgsMapCanvasMap. It is an internal class used by map canvas.
+- QgsMapLayerRegistry. Its functionality has been moved to QgsProject.
 - QgsMapRenderer. It has been replaced by QgsMapRendererJob with subclasses and QgsMapSettings.
 - QgsPseudoColorShader. This shader has been broken for some time and was replaced by QgsSingleBandPseudoColorRenderer.
 - QgsRendererV2DataDefinedMenus was removed. Use QgsDataDefinedButton instead.
@@ -526,6 +527,7 @@ QgsComposerLegendItem        {#qgis_api_break_3_0_QgsComposerLegendItem}
 QgsComposerMap        {#qgis_api_break_3_0_QgsComposerMap}
 --------------
 
+- layerSet() and setLayerSet() have been replaced by layers() and setLayers() which work with list of layers instead of layer IDs
 - containsWMSLayer() has been renamed to containsWmsLayer()
 - mapRenderer() has been removed. Use mapSettings() instead.
 - All grid style and format enums were moved to QgsComposerMapGrid.
@@ -1120,6 +1122,7 @@ QgsMapLayerRegistry        {#qgis_api_break_3_0_QgsMapLayerRegistry}
 QgsMapOverviewCanvas        {#qgis_api_break_3_0_QgsMapOverviewCanvas}
 --------------------
 
+- layerSet() and setLayerSet() have been replaced by layers() and setLayers() which work with list of layers instead of layer IDs
 - destinationSrsChanged() was renamed to destinationCrsChanged()
 
 
@@ -1173,6 +1176,7 @@ The whole class has been refactored to stop using WKB and to use QgsAbstractGeom
 QgsMapSettings        {#qgis_api_break_3_0_QgsMapSettings}
 --------------
 
+- layers() and setLayers() now work with list of layers instead of layer IDs
 - layerTransform() now returns a QgsCoordinateTransform object, not a pointer. An invalid QgsCoordinateTransform will
 be returned instead of a null pointer if no transformation is required.
 - destinationCrs() now returns a copy instead of a reference to the CRS. This has no effect on PyQGIS code, but c++

python/core/composer/qgscomposermap.sip

@@ -136,9 +136,9 @@ class QgsComposerMap : QgsComposerItem
     void setKeepLayerSet( bool enabled );
 
     /** Getter for stored layer set that is used if mKeepLayerSet is true */
-    QStringList layerSet() const;
+    QList<QgsMapLayer*> layers() const;
     /** Setter for stored layer set that is used if mKeepLayerSet is true */
-    void setLayerSet( const QStringList& layerSet );
+    void setLayers( const QList<QgsMapLayer*> layers );
     /** Stores the current layer set of the qgis mapcanvas in mLayerSet*/
     void storeCurrentLayerSet();
 

python/core/core.sip

@@ -83,7 +83,6 @@
 %Include qgsmaplayerlegend.sip
 %Include qgsmaplayermodel.sip
 %Include qgsmaplayerproxymodel.sip
-%Include qgsmaplayerregistry.sip
 %Include qgsmaplayerrenderer.sip
 %Include qgsmaplayerstylemanager.sip
 %Include qgsmaprenderercache.sip

python/core/layertree/qgslayertreegroup.sip

@@ -46,6 +46,9 @@ class QgsLayerTreeGroup : QgsLayerTreeNode
     //! Remove all child nodes. The nodes will be deleted.
     void removeAllChildren();
 
+    //! Find layer node representing the map layer. Searches recursively the whole sub-tree.
+    //! @note added in 3.0
+    QgsLayerTreeLayer* findLayer( QgsMapLayer* layer ) const;
     //! Find layer node representing the map layer specified by its ID. Searches recursively the whole sub-tree.
     QgsLayerTreeLayer* findLayer( const QString& layerId );
     //! Find all layer nodes. Searches recursively the whole sub-tree.

python/core/layertree/qgslayertreelayer.sip

@@ -2,7 +2,7 @@
  * Layer tree node points to a map layer.
  *
  * When using with existing QgsMapLayer instance, it is expected that the layer
- * has been registered in QgsMapLayerRegistry earlier.
+ * has been registered in QgsProject earlier.
  *
  * The node can exist also without a valid instance of a layer (just ID). That
  * means the referenced layer does not need to be loaded in order to use it

python/core/layertree/qgslayertreeregistrybridge.sip

@@ -17,7 +17,8 @@ class QgsLayerTreeRegistryBridge : QObject
 %End
 
   public:
-    explicit QgsLayerTreeRegistryBridge( QgsLayerTreeGroup* root, QObject *parent /TransferThis/ = 0 );
+    //! Create the instance that synchronizes given project with a layer tree root
+    explicit QgsLayerTreeRegistryBridge( QgsLayerTreeGroup* root, QgsProject* project, QObject *parent /TransferThis/ = 0 );
 
     void setEnabled( bool enabled );
     bool isEnabled() const;

python/core/qgsmaplayer.sip

@@ -54,7 +54,7 @@ class QgsMapLayer : QObject
      */
     QgsMapLayer::LayerType type() const;
 
-    /** Returns the layer's unique ID, which is used to access this layer from QgsMapLayerRegistry. */
+    /** Returns the layer's unique ID, which is used to access this layer from QgsProject. */
     QString id() const;
 
     /**