[gparted] Display list of Logical Volumes in the Partition Information dialog (754649)

[Mike Fleetwood <mfleetwo src gnome org>]

commit 9e950e89b42158753c47bb846336e83b4bf3c100
Author: Wrolf Courtney <wrolf wrolf net>
Date:   Sun Sep 6 15:46:31 2015 -0400

    Display list of Logical Volumes in the Partition Information dialog (754649)
    
    Bug 754649 - Display Logical Volumes in Volume Group of LVM2 Partition

 include/LVM2_PV_Info.h       |    1 +
 src/Dialog_Partition_Info.cc |   20 ++++++++++++++++++++
 src/LVM2_PV_Info.cc          |   22 ++++++++++++++++++++++
 3 files changed, 43 insertions(+), 0 deletions(-)
---
diff --git a/include/LVM2_PV_Info.h b/include/LVM2_PV_Info.h
index c7cc010..25f0e1d 100644
--- a/include/LVM2_PV_Info.h
+++ b/include/LVM2_PV_Info.h
@@ -57,6 +57,7 @@ public:
        static bool has_active_lvs( const Glib::ustring & path );
        static bool is_vg_exported( const Glib::ustring & vgname );
        static std::vector<Glib::ustring> get_vg_members( const Glib::ustring & vgname );
+       static std::vector<Glib::ustring> get_vg_lvs( const Glib::ustring & vgname );
        static std::vector<Glib::ustring> get_error_messages( const Glib::ustring & path );
 private:
        static void initialize_if_required();
diff --git a/src/Dialog_Partition_Info.cc b/src/Dialog_Partition_Info.cc
index 4f5e167..2cee91c 100644
--- a/src/Dialog_Partition_Info.cc
+++ b/src/Dialog_Partition_Info.cc
@@ -414,6 +414,26 @@ void Dialog_Partition_Info::Display_Info()
                table ->attach( * Utils::mk_label( members_str, true, false, true, 0.0 /* ALIGN_TOP */ ), 2, 
3, top++, bottom++, Gtk::FILL ) ;
        }
 
+       if ( partition.filesystem == FS_LVM2_PV )
+       {
+               //Logical Volumes
+               table ->attach( * Utils::mk_label( "<b>" + Glib::ustring( _("Logical Volumes:") ) + "</b>", 
true, false, false, 0.0 /* ALIGN_TOP */ ),
+                               1, 2, top, bottom, Gtk::FILL );
+
+               std::vector<Glib::ustring> lvs;
+               lvs = LVM2_PV_Info::get_vg_lvs( vgname );
+
+               Glib::ustring lvs_str = "";
+               for ( unsigned int i = 0 ; i < lvs .size() ; i ++ )
+               {
+                       if ( i > 0 )
+                               lvs_str += "\n";
+                       lvs_str += lvs[i];
+               }
+
+               table ->attach( * Utils::mk_label( lvs_str, true, false, true, 0.0 /* ALIGN_TOP */ ), 2, 3, 
top++, bottom++, Gtk::FILL );
+       }
+
        //Right field & value pair area
        if ( partition .sector_usage_known() )
        {
diff --git a/src/LVM2_PV_Info.cc b/src/LVM2_PV_Info.cc
index 2bfa97e..07c676c 100644
--- a/src/LVM2_PV_Info.cc
+++ b/src/LVM2_PV_Info.cc
@@ -152,6 +152,28 @@ std::vector<Glib::ustring> LVM2_PV_Info::get_vg_members( const Glib::ustring & v
        return members ;
 }
 
+// Return vector of LVs in the VG.
+std::vector<Glib::ustring> LVM2_PV_Info::get_vg_lvs( const Glib::ustring & vgname )
+{
+       initialize_if_required();
+       std::vector<Glib::ustring> lvs;
+
+       if ( vgname == "" )
+               return lvs;
+
+       for ( unsigned int i = 0 ; i < lvm2_vg_cache.size() ; i ++ )
+       {
+               if ( vgname == lvm2_vg_cache[i].vg_name && lvm2_vg_cache[i].lv_name != "" )
+               {
+                       // Only append lv_name if not already in lvs
+                       if ( std::find( lvs.begin(), lvs.end(), lvm2_vg_cache[i].lv_name ) == lvs.end() )
+                               lvs.push_back( lvm2_vg_cache[i].lv_name );
+               }
+       }
+
+       return lvs;
+}
+
 std::vector<Glib::ustring> LVM2_PV_Info::get_error_messages( const Glib::ustring & path )
 {
        initialize_if_required() ;