Texture Browser Form: some minor logic fixes (no texture groups were selected when initial texture was empty and no texture group was stored in the program configuration).

Texture Browser Form: don't save current texture group when the form was canceled.
Keyboard Shortcut Reference export: generated html will now be saved to program configuration folder if working folder is write-protected.
Internal: added SupportedMapFormats property to EditModeAttribute. A mode with this property specified will be available only in specified map formats.
Interface: Ceiling Align Mode and Floor Align Mode are now enabled by default.
Interface: Ceiling Align Mode and Floor Align Mode are now only available in UDMF map format.
Interface: Visplane Explorer Mode is now available only in Doom map format.

Source/Core/Editing/EditModeAttribute.cs

@@ -42,6 +42,7 @@ namespace CodeImp.DoomBuilder.Editing
 		private bool allowcopypaste = true;
 		private bool usebydefault;
 		private bool safestartmode;
+		private string[] supportedmapformats; //mxd
 		
 		#endregion
 		
@@ -108,7 +109,12 @@ namespace CodeImp.DoomBuilder.Editing
 		/// opening a map. The user can then select this as starting mode in the configuration.
 		/// </summary>
 		public bool SafeStartMode { get { return safestartmode; } set { safestartmode = value; } }
-		
+
+		/// <summary>
+		/// List of map formats this mode can work with. Null means all map formats are supported (mxd)
+		/// </summary>
+		public string[] SupportedMapFormats { get { return supportedmapformats; } set { supportedmapformats = value; } }
+
 		#endregion
 
 		#region ================== Constructor / Disposer

Source/Core/Editing/EditingManager.cs

@@ -247,10 +247,12 @@ namespace CodeImp.DoomBuilder.Editing
 			{
 				foreach(EditModeInfo emi in allmodes)
 				{
-					// Include the mode when it is listed and enabled
-					// Also include the mode when it is not optional
-					if( (General.Map.ConfigSettings.EditModes.ContainsKey(emi.Type.FullName) &&
-						 General.Map.ConfigSettings.EditModes[emi.Type.FullName]) || !emi.IsOptional )
+					// Include the mode if it supports current map format (mxd)
+					// Also include the mode when it is listed and enabled or when it's not optional
+					if( (emi.Attributes.SupportedMapFormats == null || Array.IndexOf(emi.Attributes.SupportedMapFormats, General.Map.Config.FormatInterface) != -1) &&
+						((General.Map.ConfigSettings.EditModes.ContainsKey(emi.Type.FullName) && 
+						General.Map.ConfigSettings.EditModes[emi.Type.FullName] ) 
+						 || !emi.IsOptional) )
 					{
 						// Add the mode to be used and bind switch action
 						usedmodes.Add(emi);

Source/Core/Windows/ConfigForm.cs

@@ -90,6 +90,7 @@ namespace CodeImp.DoomBuilder.Windows
 					lvi = listmodes.Items.Add(emi.Attributes.DisplayName);
 					lvi.Tag = emi;
 					lvi.SubItems.Add(emi.Plugin.Plug.Name);
+					lvi.UseItemStyleForSubItems = true; //mxd
 				}
 			}
 
@@ -194,8 +195,27 @@ namespace CodeImp.DoomBuilder.Windows
 				foreach(ListViewItem lvi in listmodes.Items)
 				{
 					EditModeInfo emi = (lvi.Tag as EditModeInfo);
-					lvi.Checked = (configinfo.EditModes.ContainsKey(emi.Type.FullName) && configinfo.EditModes[emi.Type.FullName]);
+
+					//mxd. Disable item if the mode does not support current map format
+					if (emi.Attributes.SupportedMapFormats != null &&
+					    Array.IndexOf(emi.Attributes.SupportedMapFormats, gameconfig.FormatInterface) == -1) 
+					{
+						lvi.Text = emi.Attributes.DisplayName + " (map format not supported)";
+						lvi.ForeColor = SystemColors.GrayText;
+						lvi.BackColor = SystemColors.InactiveBorder;
+						lvi.Checked = false;
+					} 
+					else 
+					{
+						lvi.Text = emi.Attributes.DisplayName;
+						lvi.ForeColor = SystemColors.WindowText;
+						lvi.BackColor = SystemColors.Window;
+						lvi.Checked = (configinfo.EditModes.ContainsKey(emi.Type.FullName) && configinfo.EditModes[emi.Type.FullName]);
+					}
 				}
+
+				// Update listmodes columns width (mxd)
+				listmodes.AutoResizeColumns(ColumnHeaderAutoResizeStyle.ColumnContent);
 				
 				// Fill start modes
 				RefillStartModes();
@@ -559,6 +579,9 @@ namespace CodeImp.DoomBuilder.Windows
 
 			// Leave when no configuration selected
 			if(configinfo == null) return;
+
+			// mxd. Not the best way to detect a disabled item, but we will go with that...
+			if(e.Item.ForeColor == SystemColors.GrayText) e.Item.Checked = false;
 			
 			// Apply changes
 			EditModeInfo emi = (e.Item.Tag as EditModeInfo);

Source/Core/Windows/MainForm.cs

@@ -2758,12 +2758,21 @@ namespace CodeImp.DoomBuilder.Windows
 			html.AppendLine("</table></div></body></html>");
 
 			//write
-			using(StreamWriter writer = File.CreateText(fileName)) {
-				writer.Write(html.ToString());
+			string path;
+			try {
+				path = Path.Combine(General.AppPath, fileName);
+				using(StreamWriter writer = File.CreateText(path)) {
+					writer.Write(html.ToString());
+				}
+			} catch (Exception) {
+				//Configurtions path SHOULD be accessible and not read-only, right?
+				path = Path.Combine(General.SettingsPath, fileName);
+				using(StreamWriter writer = File.CreateText(path)) {
+					writer.Write(html.ToString());
+				}
 			}
 
 			//open file
-			string path = Path.Combine(General.AppPath, fileName);
 			DisplayStatus(StatusType.Info, "Shortcut reference saved to '" + path + "'");
 			System.Diagnostics.Process.Start(path);
 		}

Source/Core/Windows/TextureBrowserForm.cs

@@ -92,8 +92,10 @@ namespace CodeImp.DoomBuilder.Windows
 				item.ImageIndex = 2 + ts.Location.type;
 				item.SelectedImageIndex = item.ImageIndex;
 
-				if (ts.Location.type != DataLocation.RESOURCE_WAD)
+				if (ts.Location.type != DataLocation.RESOURCE_WAD) {
 					createNodes(item);
+					item.Expand();
+				}
 			}
 
 			//mxd. Add All textures set
@@ -124,11 +126,10 @@ namespace CodeImp.DoomBuilder.Windows
 			}
 
 			//mxd. If the selected texture was not found in the last-selected set, try finding it in the other sets
-			if (selectedset == null) {
+			if (selectedset == null && selecttexture != "-") {
 				foreach (TreeNode n in tvTextureSets.Nodes) {
 					selectedset = findTextureByLongName(n, longname);
-					if (selectedset != null) 
-						break;
+					if (selectedset != null) break;
 				}
 			}
 
@@ -136,13 +137,11 @@ namespace CodeImp.DoomBuilder.Windows
 			if (selectedset == null && match != null)
 				selectedset = match;
 
-			if(tvTextureSets.Nodes.Count > 0)
-				tvTextureSets.Nodes[0].Expand();//mxd
-			tvTextureSets.EndUpdate();//mxd
+			//mxd. Select found node or "All" node, if none were found
+			if (tvTextureSets.Nodes.Count > 0) 
+				tvTextureSets.SelectedNode = (selectedset ?? tvTextureSets.Nodes[tvTextureSets.Nodes.Count - 1]);
 
-			if (selectedset != null) {//mxd
-				tvTextureSets.SelectedNode = selectedset;
-			}
+			tvTextureSets.EndUpdate();//mxd
 
 			// Keep last position and size
 			lastposition = this.Location;
@@ -375,7 +374,7 @@ namespace CodeImp.DoomBuilder.Windows
 			General.Settings.WriteSetting("browserwindow.windowstate", windowstate);
 
 			//mxd. Save last selected texture set
-			if(tvTextureSets.SelectedNode != null)
+			if(this.DialogResult == DialogResult.OK && tvTextureSets.SelectedNode != null)
 				General.Settings.WriteSetting("browserwindow.textureset", tvTextureSets.SelectedNode.Name);
 			
 			// Clean up

Source/Plugins/BuilderModes/ClassicModes/CeilingAlignMode.cs

@@ -30,6 +30,8 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			  ButtonImage = "CeilingAlign.png",
 			  ButtonOrder = int.MinValue + 311,
 			  ButtonGroup = "000_editing",
+			  UseByDefault = true, //mxd
+			  SupportedMapFormats = new[] { "UniversalMapSetIO" }, //mxd
 			  Volatile = true)]
 
 	public class CeilingAlignMode : FlatAlignMode

Source/Plugins/BuilderModes/ClassicModes/FloorAlignMode.cs

@@ -30,6 +30,8 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			  ButtonImage = "FloorAlign.png",
 			  ButtonOrder = int.MinValue + 310,
 			  ButtonGroup = "000_editing",
+			  UseByDefault = true, //mxd
+			  SupportedMapFormats = new[] { "UniversalMapSetIO" }, //mxd
 			  Volatile = true)]
 
 	public class FloorAlignMode : FlatAlignMode

Source/Plugins/VisplaneExplorer/VisplaneExplorerMode.cs

@@ -25,6 +25,7 @@ namespace CodeImp.DoomBuilder.Plugins.VisplaneExplorer
 			  ButtonGroup = "002_tools",
 			  Volatile = true,
 			  UseByDefault = true,
+			  SupportedMapFormats = new[] { "DoomMapSetIO" }, //mxd
 			  AllowCopyPaste = false)]
 	public class VisplaneExplorerMode : ClassicMode
 	{
@@ -248,13 +249,6 @@ namespace CodeImp.DoomBuilder.Plugins.VisplaneExplorer
 		// Mode starts
 		public override void OnEngage()
 		{
-            //mxd. I think it only applies to maps in Doom format
-            if (General.Map.Config.FormatInterface != "DoomMapSetIO") {
-				General.Interface.DisplayStatus(StatusType.Warning, "Visplane Explorer requires map in Doom format!");
-                OnCancel(); //return to previous mode
-				return;
-			}
-
 			Cursor.Current = Cursors.WaitCursor;
 			base.OnEngage();
 			General.Interface.DisplayStatus(StatusType.Busy, "Setting up test environment...");