Eeschema, Hierarchy navigator: add tool to Hide/show the panel.

Add also a close button to the pane.

eeschema/eeschema_config.cpp

@@ -160,6 +160,8 @@ void SCH_EDIT_FRAME::SaveSettings( APP_SETTINGS_BASE* aCfg )
     if( eeconfig() )
     {
         eeconfig()->m_System.units = static_cast<int>( m_userUnits );
+        wxAuiPaneInfo& hierarchy = m_auimgr.GetPane( SchematicHierarchyPaneName() );
+        m_showHierarchy =  hierarchy.IsShown();
         eeconfig()->m_AuiPanels.show_schematic_hierarchy = m_showHierarchy;
         eeconfig()->m_AuiPanels.left_panel_width = m_hierarchy->GetSize().x;
     }

eeschema/sch_edit_frame.cpp

@@ -267,9 +267,10 @@ SCH_EDIT_FRAME::SCH_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
                       .Top().Layer( 6 ) );
     m_auimgr.AddPane( m_optionsToolBar, EDA_PANE().VToolbar().Name( "OptToolbar" )
                       .Left().Layer( 4 ) );
-    m_auimgr.AddPane( m_hierarchy, EDA_PANE().Palette().Name( "SchematicHierarchy" )
+    m_auimgr.AddPane( m_hierarchy, EDA_PANE().Palette().Name( SchematicHierarchyPaneName() )
                       .Caption( _("Schematic Hierarchy") )
                       .Left().Layer( 3 )
+                      .CloseButton( true )
                       .MinSize(120, -1)
                       .BestSize(200, -1));
     m_auimgr.AddPane( m_drawToolBar, EDA_PANE().VToolbar().Name( "ToolsToolbar" )
@@ -288,7 +289,7 @@ SCH_EDIT_FRAME::SCH_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
 
     initScreenZoom();
 
-    wxAuiPaneInfo& hierarchy = m_auimgr.GetPane( "SchematicHierarchy" );
+    wxAuiPaneInfo& hierarchy = m_auimgr.GetPane( SchematicHierarchyPaneName() );
     hierarchy.Show( m_showHierarchy );
 
     if( eeconfig() && ( eeconfig()->m_AuiPanels.left_panel_width > 0 ) )
@@ -418,7 +419,7 @@ void SCH_EDIT_FRAME::setupUIConditions()
     auto hierarchyNavigatorCond =
             [ this ] ( const SELECTION& aSel )
             {
-                return m_auimgr.GetPane( "SchematicHierarchy" ).IsShown();
+                return m_auimgr.GetPane( SchematicHierarchyPaneName() ).IsShown();
             };
 
 

eeschema/sch_edit_frame.h

@@ -833,6 +833,14 @@ public:
      */
     void ToggleSchematicHierarchy();
 
+    /**
+     * @return the name of the wxAuiPaneInfo managing the Hierarchy Navigator panel
+     */
+    static const wxString SchematicHierarchyPaneName()
+    {
+        return wxT( "SchematicHierarchy" );
+    }
+
     DECLARE_EVENT_TABLE()
 
 protected:

eeschema/toolbars_sch_editor.cpp

@@ -209,6 +209,9 @@ void SCH_EDIT_FRAME::ReCreateOptToolbar()
     m_optionsToolBar->AddScaledSeparator( this );
     m_optionsToolBar->Add( EE_ACTIONS::toggleAnnotateAuto,      ACTION_TOOLBAR::TOGGLE );
 
+    m_optionsToolBar->AddScaledSeparator( this );
+    m_optionsToolBar->Add( EE_ACTIONS::showHierarchy,           ACTION_TOOLBAR::TOGGLE );
+
     if( ADVANCED_CFG::GetCfg().m_DrawBoundingBoxes )
         m_optionsToolBar->Add( ACTIONS::toggleBoundingBoxes,    ACTION_TOOLBAR::TOGGLE );
 
@@ -224,7 +227,8 @@ void SCH_EDIT_FRAME::ReCreateOptToolbar()
 void SCH_EDIT_FRAME::ToggleSchematicHierarchy()
 {
     EESCHEMA_SETTINGS* cfg = dynamic_cast<EESCHEMA_SETTINGS*>( Kiface().KifaceSettings() );
-    wxAuiPaneInfo&     hierarchy = m_auimgr.GetPane( "SchematicHierarchy" );
+    wxAuiPaneInfo&     hierarchy = m_auimgr.GetPane( SchematicHierarchyPaneName() );
+    m_showHierarchy =  hierarchy.IsShown();
 
     // show auxiliary Vertical layers and visibility manager toolbar
     m_showHierarchy = !m_showHierarchy;

eeschema/tools/ee_actions.cpp

@@ -771,7 +771,7 @@ TOOL_ACTION EE_ACTIONS::navigateNext( "eeschema.NavigateTool.next",
 TOOL_ACTION EE_ACTIONS::showHierarchy( "eeschema.EditorTool.showHierarchy",
         AS_GLOBAL,
         MD_CTRL + 'H', "",
-        _( "Hierarchy Navigator" ), _( "Show schematic sheet hierarchy" ),
+        _( "Hierarchy Navigator" ), _( "Show or hide the schematic sheet hierarchy navigator" ),
         BITMAPS::hierarchy_nav );
 
 TOOL_ACTION EE_ACTIONS::hypertextCommand( "eeschema.NavigateTool.hypertextCommand",