Disable the individual reset button for the menubar menus

And:
* Cut m_pDescriptionField's ties to the entries list on the right.
* Disable Add and Remove buttons depending on current command selection
* Display the description of the selected command

Change-Id: I65a06f2f143c335f26de9007c6067f3116465c30
Reviewed-on: https://gerrit.libreoffice.org/41582Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>

cui/source/customize/SvxMenuConfigPage.cxx

@@ -144,6 +144,11 @@ SvxMenuConfigPage::SvxMenuConfigPage(vcl::Window *pParent, const SfxItemSet& rSe
         m_pPlusBtn->Hide();
         m_pMinusBtn->Hide();
     }
+    else
+    {
+        // TODO: Remove this when it is possible to reset menubar menus individually
+        m_pResetBtn->Disable();
+    }
 
 }
 
@@ -189,7 +194,6 @@ IMPL_LINK_NOARG( SvxMenuConfigPage, SelectMenuEntry, SvTreeListBox *, void )
 
 void SvxMenuConfigPage::UpdateButtonStates()
 {
-
     // Disable Up and Down buttons depending on current selection
     SvTreeListEntry* selection = m_pContentsListBox->GetCurEntry();
 
@@ -198,8 +202,6 @@ void SvxMenuConfigPage::UpdateButtonStates()
         m_pMoveUpButton->Enable( false );
         m_pMoveDownButton->Enable( false );
 
-        m_pDescriptionField->SetText("");
-
         return;
     }
 
@@ -208,18 +210,6 @@ void SvxMenuConfigPage::UpdateButtonStates()
 
     m_pMoveUpButton->Enable( selection != first );
     m_pMoveDownButton->Enable( selection != last );
-
-    SvxConfigEntry* pEntryData =
-        static_cast<SvxConfigEntry*>(selection->GetUserData());
-
-    if ( pEntryData->IsSeparator() )
-    {
-        m_pDescriptionField->SetText("");
-    }
-    else
-    {
-        m_pDescriptionField->SetText(pEntryData->GetHelpText());
-    }
 }
 
 void SvxMenuConfigPage::DeleteSelectedTopLevel()

cui/source/customize/cfg.cxx

@@ -1178,6 +1178,9 @@ SvxConfigPage::SvxConfigPage(vcl::Window *pParent, const SfxItemSet& rSet)
 
     m_pSearchEdit->SetUpdateDataHdl ( LINK( this, SvxConfigPage, SearchUpdateHdl ));
     m_pSearchEdit->EnableUpdateData();
+
+    m_pFunctions->SetSelectHdl(
+        LINK( this, SvxConfigPage, SelectFunctionHdl ) );
 }
 
 SvxConfigPage::~SvxConfigPage()
@@ -1773,6 +1776,29 @@ IMPL_LINK( SvxConfigPage, MoveHdl, Button *, pButton, void )
     MoveEntry(pButton == m_pMoveUpButton);
 }
 
+IMPL_LINK_NOARG( SvxConfigPage, SelectFunctionHdl, SvTreeListBox *, void )
+{
+    // GetScriptURL() returns a non-empty string if a
+    // valid command is selected on the left box
+    bool bIsValidCommand = !GetScriptURL().isEmpty();
+
+    // Enable/disable Add and Remove buttons depending on current selection
+    if (bIsValidCommand)
+    {
+        m_pAddCommandButton->Enable();
+        m_pRemoveCommandButton->Enable();
+
+        m_pDescriptionField->SetText( m_pFunctions->GetHelpText() );
+    }
+    else
+    {
+        m_pAddCommandButton->Disable();
+        m_pRemoveCommandButton->Disable();
+
+        m_pDescriptionField->SetText("");
+    }
+}
+
 IMPL_LINK_NOARG(SvxConfigPage, SearchUpdateHdl, Edit&, void)
 {
     OUString aSearchTerm( m_pSearchEdit->GetText() );

cui/source/inc/cfg.hxx

@@ -424,6 +424,7 @@ protected:
     SvxConfigPage( vcl::Window*, const SfxItemSet& );
 
     DECL_LINK( MoveHdl, Button *, void );
+    DECL_LINK( SelectFunctionHdl, SvTreeListBox *, void );
 
     virtual SaveInData* CreateSaveInData(
         const css::uno::Reference< css::ui::XUIConfigurationManager >&,