[banshee] AlbumListView: Allow subclasses to switch between album grid and list

[Bertrand Lorentz <blorentz src gnome org>]

commit 8bd2b8ee29797b292b67a2842d3b9101b588a4a6
Author: Bertrand Lorentz <bertrand lorentz gmail com>
Date:   Sun Jan 20 18:16:25 2013 +0100

    AlbumListView: Allow subclasses to switch between album grid and list
    
    Add SwitchToAlbumList and SwitchToAlbumGrid protected methods, so that
    AlbumListView subclasses can choose whether to display the album grid
    or the old album list.
    
    The "Disable album grid" preference is not changed by these methods, and
    it still determines the initial display. This means subclasses must be
    careful if they don't want to follow the preference.

 .../Banshee.Collection.Gui/AlbumListView.cs        |   43 +++++++++++---------
 1 files changed, 24 insertions(+), 19 deletions(-)
---
diff --git a/src/Core/Banshee.ThickClient/Banshee.Collection.Gui/AlbumListView.cs b/src/Core/Banshee.ThickClient/Banshee.Collection.Gui/AlbumListView.cs
index 26dfaab..3d94d7e 100644
--- a/src/Core/Banshee.ThickClient/Banshee.Collection.Gui/AlbumListView.cs
+++ b/src/Core/Banshee.ThickClient/Banshee.Collection.Gui/AlbumListView.cs
@@ -96,7 +96,11 @@ namespace Banshee.Collection.Gui
                 return;
             }
 
-            DisabledAlbumGrid = DisableAlbumGrid.Get ();
+            if (DisableAlbumGrid.Get ()) {
+                SwitchToAlbumList ();
+            } else {
+                SwitchToAlbumGrid ();
+            }
         }
 
         private PreferenceBase disable_album_grid;
@@ -114,7 +118,7 @@ namespace Banshee.Collection.Gui
         private void InstallPreferences ()
         {
             music_lib = ServiceManager.SourceManager.MusicLibrary;
-            disable_album_grid = music_lib.PreferencesPage["misc"].Add (DisableAlbumGridPref);
+            disable_album_grid = music_lib.PreferencesPage["misc"].FindOrAdd (DisableAlbumGridPref);
 
             ServiceManager.SourceManager.SourceAdded -= InstallPreferences;
         }
@@ -131,24 +135,25 @@ namespace Banshee.Collection.Gui
             ServiceManager.SourceManager.SourceRemoved -= UninstallPreferences;
         }
 
-        private bool DisabledAlbumGrid {
-            get { return DisableAlbumGrid.Get (); }
-            set {
-                DisableAlbumGrid.Set (value);
-                if (value) {
-                    ViewLayout = null;
-                    if (classic_layout_column == null)
-                        classic_layout_column = new Column ("Album", renderer, 1.0);
-                    column_controller.Add (classic_layout_column);
-                    ColumnController = column_controller;
-                } else {
-                    if (classic_layout_column != null)
-                        column_controller.Remove (classic_layout_column);
-                    ColumnController = null;
-                    ViewLayout = grid_layout;
-                }
-                album_grid_rendered = !value;
+        protected void SwitchToAlbumList ()
+        {
+            ViewLayout = null;
+            if (classic_layout_column == null) {
+                classic_layout_column = new Column ("Album", renderer, 1.0);
+            }
+            column_controller.Add (classic_layout_column);
+            ColumnController = column_controller;
+            album_grid_rendered = false;
+        }
+
+        protected void SwitchToAlbumGrid ()
+        {
+            if (classic_layout_column != null) {
+                column_controller.Remove (classic_layout_column);
             }
+            ColumnController = null;
+            ViewLayout = grid_layout;
+            album_grid_rendered = true;
         }
 
         private static SchemaPreference<bool> DisableAlbumGridPref = null;