From f0aeee8c5be6ed29ffc2ff636bc59c68cac19585 Mon Sep 17 00:00:00 2001
From: Salvatore Larosa <lrssvtml@gmail.com>
Date: Sat, 14 Nov 2015 16:44:31 +0100
Subject: [PATCH] [FEATURE] allow applying the same style to selected layers or
 to legend group also fixes #10323

This adds the possibility to paste the style to group or selected layers.
---
 src/app/qgisapp.cpp                         | 26 +++++++++++++++++++++
 src/app/qgisapp.h                           |  3 +++
 src/app/qgsapplayertreeviewmenuprovider.cpp | 12 ++++++++++
 3 files changed, 41 insertions(+)

diff --git a/src/app/qgisapp.cpp b/src/app/qgisapp.cpp
index 38c76872261..dad2ac33af8 100644
--- a/src/app/qgisapp.cpp
+++ b/src/app/qgisapp.cpp
@@ -7746,7 +7746,33 @@ void QgisApp::legendLayerStretchUsingCurrentExtent()
   }
 }
 
+void QgisApp::applyStyleToGroup()
+{
+  if ( !mLayerTreeView )
+    return;
 
+  Q_FOREACH ( QgsLayerTreeNode* node, mLayerTreeView->selectedNodes() )
+  {
+    if ( QgsLayerTree::isGroup( node ) )
+    {
+      Q_FOREACH ( QgsLayerTreeLayer* nodeLayer, QgsLayerTree::toGroup( node )->findLayers() )
+      {
+        if ( nodeLayer->layer() )
+        {
+          pasteStyle( nodeLayer->layer() );
+        }
+      }
+    }
+    else if ( QgsLayerTree::isLayer( node ) )
+    {
+      QgsLayerTreeLayer* nodeLayer = QgsLayerTree::toLayer( node );
+      if ( nodeLayer->layer() )
+      {
+        pasteStyle( nodeLayer->layer() );
+      }
+    }
+  }
+}
 
 void QgisApp::legendGroupSetCRS()
 {
diff --git a/src/app/qgisapp.h b/src/app/qgisapp.h
index b44b7652dbd..1ce78ffda37 100644
--- a/src/app/qgisapp.h
+++ b/src/app/qgisapp.h
@@ -748,6 +748,9 @@ class APP_EXPORT QgisApp : public QMainWindow, private Ui::MainWindow
         Only workds on raster layers*/
     void legendLayerStretchUsingCurrentExtent();
 
+    /** Apply the same style to selected layers or to current legend group*/
+    void applyStyleToGroup();
+
     /** Set the CRS of the current legend group*/
     void legendGroupSetCRS();
 
diff --git a/src/app/qgsapplayertreeviewmenuprovider.cpp b/src/app/qgsapplayertreeviewmenuprovider.cpp
index 7489714c944..9137ee04957 100644
--- a/src/app/qgsapplayertreeviewmenuprovider.cpp
+++ b/src/app/qgsapplayertreeviewmenuprovider.cpp
@@ -66,6 +66,11 @@ QMenu* QgsAppLayerTreeViewMenuProvider::createContextMenu()
       if ( mView->selectedNodes( true ).count() >= 2 )
         menu->addAction( actions->actionGroupSelected( menu ) );
 
+      if ( QgisApp::instance()->clipboard()->hasFormat( QGSCLIPBOARD_STYLE_MIME ) )
+      {
+        menu->addAction( tr( "Paste Style" ), QgisApp::instance(), SLOT( applyStyleToGroup() ) );
+      }
+
       menu->addAction( tr( "Save As Layer Definition File..." ), QgisApp::instance(), SLOT( saveAsLayerDefinition() ) );
 
       menu->addAction( actions->actionAddGroup( menu ) );
@@ -121,6 +126,13 @@ QMenu* QgsAppLayerTreeViewMenuProvider::createContextMenu()
 
         menu->addMenu( menuStyleManager );
       }
+      else
+      {
+        if ( QgisApp::instance()->clipboard()->hasFormat( QGSCLIPBOARD_STYLE_MIME ) )
+        {
+          menu->addAction( tr( "Paste Style" ), QgisApp::instance(), SLOT( applyStyleToGroup() ) );
+        }
+      }
 
       menu->addSeparator();