Refactor the code that open edit forms, to make it easier to add different forms in the future

Source/Core/Builder.csproj

@@ -274,6 +274,9 @@
     <Compile Include="Rendering\VertexBuffer.cs" />
     <Compile Include="Rendering\VisualSlopeHandle.cs" />
     <Compile Include="VisualModes\VisualSlope.cs" />
+    <Compile Include="Windows\ILinedefEditForm.cs" />
+    <Compile Include="Windows\ISectorEditForm.cs" />
+    <Compile Include="Windows\IThingEditForm.cs" />
     <Compile Include="Windows\PreAndPostCommandsForm.cs">
       <SubType>Form</SubType>
     </Compile>

Source/Core/BuilderMono.csproj

@@ -266,6 +266,9 @@
     <Compile Include="Rendering\VertexBuffer.cs" />
     <Compile Include="Rendering\VisualSlopeHandle.cs" />
     <Compile Include="VisualModes\VisualSlope.cs" />
+    <Compile Include="Windows\ILinedefEditForm.cs" />
+    <Compile Include="Windows\ISectorEditForm.cs" />
+    <Compile Include="Windows\IThingEditForm.cs" />
     <Compile Include="Windows\PreAndPostCommandsForm.cs">
       <SubType>Form</SubType>
     </Compile>

Source/Core/Windows/ILinedefEditForm.cs

@@ -0,0 +1,23 @@
+#region ================== Namespaces
+
+using CodeImp.DoomBuilder.Map;
+using System;
+using System.Collections.Generic;
+using System.Windows.Forms;
+
+#endregion
+
+namespace CodeImp.DoomBuilder.Windows
+{
+	public interface ILinedefEditForm
+	{
+		//Events
+		event EventHandler OnValuesChanged;
+		event EventHandler Closed;
+
+		// Methods
+		void Setup(ICollection<Linedef> lines, bool selectfront, bool selectback);
+		DialogResult ShowDialog(IWin32Window owner);
+		void Dispose();
+	}
+}

Source/Core/Windows/ISectorEditForm.cs

@@ -0,0 +1,23 @@
+#region ================== Namespaces
+
+using CodeImp.DoomBuilder.Map;
+using System;
+using System.Collections.Generic;
+using System.Windows.Forms;
+
+#endregion
+
+namespace CodeImp.DoomBuilder.Windows
+{
+	public interface ISectorEditForm
+	{
+		//Events
+		event EventHandler OnValuesChanged;
+		event EventHandler Closed;
+
+		// Methods
+		void Setup(ICollection<Sector> sectors);
+		DialogResult ShowDialog(IWin32Window owner);
+		void Dispose();
+	}
+}

Source/Core/Windows/IThingEditForm.cs

@@ -0,0 +1,23 @@
+#region ================== Namespaces
+
+using CodeImp.DoomBuilder.Map;
+using System;
+using System.Collections.Generic;
+using System.Windows.Forms;
+
+#endregion
+
+namespace CodeImp.DoomBuilder.Windows
+{
+	public interface IThingEditForm
+	{
+		//Events
+		event EventHandler OnValuesChanged;
+		event EventHandler Closed;
+
+		// Methods
+		void Setup(ICollection<Thing> things);
+		DialogResult ShowDialog(IWin32Window owner);
+		void Dispose();
+	}
+}

Source/Core/Windows/LinedefEditForm.cs

@@ -28,7 +28,7 @@ using CodeImp.DoomBuilder.Types;
 
 namespace CodeImp.DoomBuilder.Windows
 {
-	internal partial class LinedefEditForm : DelayedForm
+	internal partial class LinedefEditForm : DelayedForm, ILinedefEditForm
 	{
 		#region ================== Events
 
@@ -149,7 +149,7 @@ namespace CodeImp.DoomBuilder.Windows
 		#region ================== Methods
 
 		// This sets up the form to edit the given lines
-		public void Setup(ICollection<Linedef> lines)
+		public void Setup(ICollection<Linedef> lines, bool selectfront, bool selectback)
 		{
 			preventchanges = true;
 			oldmapischanged = General.Map.IsChanged;

Source/Core/Windows/LinedefEditFormUDMF.cs

@@ -29,7 +29,7 @@ using CodeImp.DoomBuilder.Types;
 
 namespace CodeImp.DoomBuilder.Windows
 {
-	internal partial class LinedefEditFormUDMF : DelayedForm
+	internal partial class LinedefEditFormUDMF : DelayedForm, ILinedefEditForm
 	{
 		#region ================== Events
 

Source/Core/Windows/MainForm.cs

@@ -4144,12 +4144,8 @@ namespace CodeImp.DoomBuilder.Windows
 		// This shows the dialog to edit lines
 		public DialogResult ShowEditLinedefs(ICollection<Linedef> lines, bool selectfront, bool selectback)
 		{
-			DialogResult result;
-			
 			// Show line edit dialog
-			if(General.Map.UDMF) //mxd
-			{
-				LinedefEditFormUDMF f = new LinedefEditFormUDMF(selectfront, selectback);
+			ILinedefEditForm f = GetLinedefEditForm(selectfront, selectback);
 			DisableProcessing(); //mxd
 			#if NO_WIN32
 			BreakExclusiveMouseInput();
@@ -4164,44 +4160,30 @@ namespace CodeImp.DoomBuilder.Windows
 			#endif
 			f.OnValuesChanged += EditForm_OnValuesChanged;
 			editformopen = true; //mxd
-				result = f.ShowDialog(this);
+			DialogResult result = f.ShowDialog(this);
 			editformopen = false; //mxd
 			f.Dispose();
+
+			return result;
+		}
+
+		private ILinedefEditForm GetLinedefEditForm(bool selectfront, bool selectback)
+		{
+			if (General.Map.UDMF)
+			{
+				return new LinedefEditFormUDMF(selectfront, selectback);
 			}
 			else
 			{
-				LinedefEditForm f = new LinedefEditForm();
-				DisableProcessing(); //mxd
-				#if NO_WIN32
-				BreakExclusiveMouseInput();
-				f.Closed += (object sender, EventArgs e) => {
-					ResumeExclusiveMouseInput();
-					EnableProcessing(); //mxd
-				};
-				#endif
-				f.Setup(lines);
-				#if !NO_WIN32
-				EnableProcessing();
-				#endif
-				f.OnValuesChanged += EditForm_OnValuesChanged;
-				editformopen = true; //mxd
-				result = f.ShowDialog(this);
-				editformopen = false; //mxd
-				f.Dispose();
+				return new LinedefEditForm();
 			}
-
-			return result;
 		}
 
 		// This shows the dialog to edit sectors
 		public DialogResult ShowEditSectors(ICollection<Sector> sectors)
 		{
-			DialogResult result;
-
 			// Show sector edit dialog
-			if(General.Map.UDMF) //mxd
-			{ 
-				SectorEditFormUDMF f = new SectorEditFormUDMF();
+			ISectorEditForm f = GetSectorEditForm();
 			DisableProcessing(); //mxd
 			#if NO_WIN32
 			BreakExclusiveMouseInput();
@@ -4216,44 +4198,30 @@ namespace CodeImp.DoomBuilder.Windows
 			#endif
 			f.OnValuesChanged += EditForm_OnValuesChanged;
 			editformopen = true; //mxd
-				result = f.ShowDialog(this);
+			DialogResult result = f.ShowDialog(this);
 			editformopen = false; //mxd
 			f.Dispose();
+
+			return result;
+		}
+
+		private ISectorEditForm GetSectorEditForm()
+		{
+			if (General.Map.UDMF)
+			{
+				return new SectorEditFormUDMF();
 			}
 			else
 			{
-				SectorEditForm f = new SectorEditForm();
-				DisableProcessing(); //mxd
-				#if NO_WIN32
-				BreakExclusiveMouseInput();
-				f.Closed += (object sender, EventArgs e) => {
-					ResumeExclusiveMouseInput();
-					EnableProcessing(); //mxd
-				};
-				#endif
-				f.Setup(sectors);
-				#if !NO_WIN32
-				EnableProcessing(); //mxd
-				#endif
-				f.OnValuesChanged += EditForm_OnValuesChanged;
-				editformopen = true; //mxd
-				result = f.ShowDialog(this);
-				editformopen = false; //mxd
-				f.Dispose();
+				return new SectorEditForm();
 			}
-
-			return result;
 		}
 
 		// This shows the dialog to edit things
 		public DialogResult ShowEditThings(ICollection<Thing> things)
 		{
-			DialogResult result;
-
 			// Show thing edit dialog
-			if(General.Map.UDMF) 
-			{
-				ThingEditFormUDMF f = new ThingEditFormUDMF();
+			IThingEditForm f = GetThingEditForm();
 			DisableProcessing(); //mxd
 			#if NO_WIN32
 			BreakExclusiveMouseInput();
@@ -4268,33 +4236,23 @@ namespace CodeImp.DoomBuilder.Windows
 			#endif
 			f.OnValuesChanged += EditForm_OnValuesChanged;
 			editformopen = true; //mxd
-				result = f.ShowDialog(this);
+			DialogResult result = f.ShowDialog(this);
 			editformopen = false; //mxd
 			f.Dispose();
+
+			return result;
+		}
+
+		private IThingEditForm GetThingEditForm()
+		{
+			if (General.Map.UDMF)
+			{
+				return new ThingEditFormUDMF();
 			}
 			else
 			{
-				ThingEditForm f = new ThingEditForm();
-				DisableProcessing(); //mxd
-				#if NO_WIN32
-				BreakExclusiveMouseInput();
-				f.Closed += (object sender, EventArgs e) => {
-					ResumeExclusiveMouseInput();
-					EnableProcessing(); //mxd
-				};
-				#endif
-				f.Setup(things);
-				#if !NO_WIN32
-				EnableProcessing(); //mxd
-				#endif
-				f.OnValuesChanged += EditForm_OnValuesChanged;
-				editformopen = true; //mxd
-				result = f.ShowDialog(this);
-				editformopen = false; //mxd
-				f.Dispose();
+				return new ThingEditForm();
 			}
-
-			return result;
 		}
 
 		//mxd

Source/Core/Windows/SectorEditForm.cs

@@ -27,7 +27,7 @@ using CodeImp.DoomBuilder.Types;
 
 namespace CodeImp.DoomBuilder.Windows
 {
-	internal partial class SectorEditForm : DelayedForm
+	internal partial class SectorEditForm : DelayedForm, ISectorEditForm
 	{
 		#region ================== Events
 

Source/Core/Windows/SectorEditFormUDMF.cs

@@ -13,7 +13,7 @@ using CodeImp.DoomBuilder.Types;
 
 namespace CodeImp.DoomBuilder.Windows
 {
-	internal partial class SectorEditFormUDMF : DelayedForm
+	internal partial class SectorEditFormUDMF : DelayedForm, ISectorEditForm
 	{
 		#region ================== Events
 

Source/Core/Windows/ThingEditForm.cs

@@ -33,7 +33,7 @@ namespace CodeImp.DoomBuilder.Windows
 	/// <summary>
 	/// Dialog window that allows viewing and editing of Thing properties.
 	/// </summary>
-	internal partial class ThingEditForm : DelayedForm
+	internal partial class ThingEditForm : DelayedForm, IThingEditForm
 	{
 		#region ================== Events
 

Source/Core/Windows/ThingEditFormUDMF.cs

@@ -33,7 +33,7 @@ namespace CodeImp.DoomBuilder.Windows
 	/// <summary>
 	/// Dialog window that allows viewing and editing of Thing properties.
 	/// </summary>
-	internal partial class ThingEditFormUDMF : DelayedForm
+	internal partial class ThingEditFormUDMF : DelayedForm, IThingEditForm
 	{
 		#region ================== Events