initial implementation of the ProjectBehavior-API

src/Main/Base/Project/ICSharpCode.SharpDevelop.addin

@@ -32,6 +32,7 @@
 			<ConditionEvaluator name="ProjectItem" class="ICSharpCode.SharpDevelop.Project.ProjectItemConditionEvaluator"/>
 			<ConditionEvaluator name="IsTextSelected" class="ICSharpCode.SharpDevelop.Editor.AvalonEdit.TextSelectedCondition"/>
 			<ConditionEvaluator name="ViewInBrowser" class="ICSharpCode.SharpDevelop.ViewInBrowserConditionEvaluator"/>
+			<ConditionEvaluator name="ProjectBehaviourSupported" class="ICSharpCode.SharpDevelop.Project.ProjectBehaviourSupportedConditionEvaluator"/>
 			
 			<Doozer name="CustomTool" class="ICSharpCode.SharpDevelop.Project.CustomToolDoozer"/>
 			<Doozer name="CustomProperty" class="ICSharpCode.SharpDevelop.Project.CustomPropertyDoozer"/>
@@ -473,14 +474,14 @@
 					<Condition name="IsProcessRunning" isprocessrunning="False" isdebugging="False"/>
 					<Condition name = "ViewInBrowser" extensions="aspx,asmx,html,htm,svc"/>
 				</And>
-			
+				
 				<MenuItem id          = "ViewInBrowser"
 				          label       = "${res:ProjectComponent.ContextMenu.ViewInBrowser}"
 				          icon        = "Icons.22x22.Browser"
 				          class       = "ICSharpCode.SharpDevelop.Project.Commands.ViewInBrowser"/>
 				<MenuItem id = "ExcludeSeparator_ViewInBrowser" type = "Separator" />
 			</ComplexCondition>
-
+			
 			<Include id="CutCopyPasteDeleteRename" path="/SharpDevelop/Pads/ProjectBrowser/ContextMenu/CutCopyPasteDeleteRename"/>
 			<MenuItem id = "RenameSeparator" type = "Separator" />
 			<MenuItem id    = "Properties"
@@ -2330,4 +2331,8 @@
 			id = "TargetingPackWarningWorkaround"
 			class = "ICSharpCode.SharpDevelop.Project.TargetingPackWarningWorkaround"/>
 	</Path>
+	
+	<Path name = "/SharpDevelop/Workbench/ProjectBehaviors">
+
+	</Path>
 </AddIn>

src/Main/Base/Project/ICSharpCode.SharpDevelop.csproj

@@ -340,6 +340,9 @@
     <Compile Include="Src\Internal\Templates\File\FileTemplate.cs" />
     <Compile Include="Src\Internal\Templates\TextTemplate.cs" />
     <Compile Include="Src\Internal\Templates\File\INewFileCreator.cs" />
+    <Compile Include="Src\Project\Behaviors\ProjectBehavior.cs" />
+    <Compile Include="Src\Project\Behaviors\ProjectBehaviorService.cs" />
+    <Compile Include="Src\Project\Behaviors\ProjectBehaviorSupportedConditionEvaluator.cs" />
     <Compile Include="Src\Project\BuildEngine.cs" />
     <Compile Include="Src\Project\ContextSpecificProperties.cs" />
     <Compile Include="Src\Project\Converter\IUpgradableProject.cs" />
@@ -913,6 +916,7 @@
       <Private>False</Private>
     </ProjectReference>
     <Folder Include="Src\Gui\Dialogs\ReferenceDialog\ServiceReference" />
+    <Folder Include="Src\Project\Behaviors" />
     <Folder Include="themes" />
     <Folder Include="Src\Bookmarks\Pad\Controls" />
     <Folder Include="Src\Editor\AvalonEdit" />

src/Main/Base/Project/Src/Project/AbstractProject.cs

@@ -305,7 +305,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		[Browsable(false)]
 		public virtual ICollection<ItemType> AvailableFileItemTypes {
 			get {
-				return ItemType.DefaultFileItems;
+				return GetOrCreateBehavior().AvailableFileItemTypes;
 			}
 		}
 		
@@ -386,7 +386,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		[Browsable(false)]
 		public virtual bool IsStartable {
 			get {
-				return false;
+				return GetOrCreateBehavior().IsStartable;
 			}
 		}
 		
@@ -399,18 +399,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		
 		public virtual void Start(bool withDebugging)
 		{
-			ProcessStartInfo psi;
-			try {
-				psi = CreateStartInfo();
-			} catch (ProjectStartException ex) {
-				MessageService.ShowError(ex.Message);
-				return;
-			}
-			if (withDebugging) {
-				DebuggerService.CurrentDebugger.Start(psi);
-			} else {
-				DebuggerService.CurrentDebugger.StartWithoutDebugging(psi);
-			}
+			GetOrCreateBehavior().Start(withDebugging);
 		}
 		
 		/// <summary>
@@ -421,7 +410,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		/// Note: this can be a ProcessStartInfo with a URL as filename!</returns>
 		public virtual ProcessStartInfo CreateStartInfo()
 		{
-			throw new NotSupportedException();
+			return GetOrCreateBehavior().CreateStartInfo();
 		}
 		
 		/// <summary>
@@ -481,7 +470,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		/// </summary>
 		public virtual ProjectItem CreateProjectItem(IProjectItemBackendStore item)
 		{
-			return new UnknownProjectItem(this, item);
+			return GetOrCreateBehavior().CreateProjectItem(item);
 		}
 		
 		#region Dirty
@@ -513,7 +502,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		/// </summary>
 		public virtual ItemType GetDefaultItemType(string fileName)
 		{
-			return ItemType.None;
+			return GetOrCreateBehavior().GetDefaultItemType(fileName);
 		}
 		
 		[Browsable(false)]
@@ -611,6 +600,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		
 		public virtual void ProjectCreationComplete()
 		{
+			GetOrCreateBehavior().ProjectCreationComplete();
 		}
 		
 		public virtual XElement LoadProjectExtensions(string name)
@@ -626,5 +616,19 @@ namespace ICSharpCode.SharpDevelop.Project
 		public Properties ProjectSpecificProperties {
 			get; protected set;
 		}
+		
+		protected virtual ProjectBehavior CreateDefaultBehavior()
+		{
+			return new DefaultProjectBehavior(this);
+		}
+		
+		protected ProjectBehavior projectBehavior;
+		
+		protected virtual ProjectBehavior GetOrCreateBehavior()
+		{
+			if (projectBehavior == null)
+				projectBehavior = ProjectBehaviorService.LoadBehaviorsForProject(this, CreateDefaultBehavior());
+			return projectBehavior;
+		}
 	}
 }

src/Main/Base/Project/Src/Project/Behaviors/ProjectBehavior.cs

@@ -0,0 +1,144 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+
+using ICSharpCode.Core;
+using ICSharpCode.SharpDevelop.Debugging;
+
+namespace ICSharpCode.SharpDevelop.Project
+{
+	public abstract class ProjectBehavior
+	{
+		ProjectBehavior next;
+		protected IProject Project { get; private set; }
+		
+		public ProjectBehavior(IProject project, ProjectBehavior next = null)
+		{
+			if (project == null)
+				throw new ArgumentNullException("project");
+			this.Project = project;
+			this.next = next;
+		}
+		
+		internal void SetProject(IProject project)
+		{
+			if (project == null)
+				throw new ArgumentNullException("project");
+			this.Project = project;
+		}
+
+		internal void SetNext(ProjectBehavior next)
+		{
+			if (next == null)
+				throw new ArgumentNullException("next");
+			this.next = next;
+		}
+		
+		public virtual bool IsStartable {
+			get {
+				if (this.next != null)
+					return next.IsStartable;
+				return false;
+			}
+		}
+		
+		public virtual void Start(bool withDebugging)
+		{
+			if (this.next != null)
+				next.Start(withDebugging);
+		}
+		
+		public virtual ProcessStartInfo CreateStartInfo()
+		{
+			if (this.next != null)
+				return next.CreateStartInfo();
+			return null;
+		}
+		
+		public virtual ItemType GetDefaultItemType(string fileName)
+		{
+			if (this.next != null)
+				return next.GetDefaultItemType(fileName);
+			return default(ItemType);
+		}
+		
+		public virtual ProjectItem CreateProjectItem(IProjectItemBackendStore item)
+		{
+			if (this.next != null)
+				return next.CreateProjectItem(item);
+			return null;
+		}
+		
+		public virtual ICollection<ItemType> AvailableFileItemTypes {
+			get {
+				if (this.next != null)
+					return next.AvailableFileItemTypes;
+				return null;
+			}
+		}
+		
+		public virtual void ProjectCreationComplete()
+		{
+			if (this.next != null)
+				next.ProjectCreationComplete();
+		}
+	}
+	
+	sealed class DefaultProjectBehavior : ProjectBehavior
+	{
+		public DefaultProjectBehavior(IProject project)
+			: base(project)
+		{
+		}
+		
+		public override bool IsStartable {
+			get { return false; }
+		}
+		
+		public override void Start(bool withDebugging)
+		{
+			ProcessStartInfo psi;
+			try {
+				if (!(Project is AbstractProject))
+					return;
+				psi = ((AbstractProject)Project).CreateStartInfo();
+			} catch (ProjectStartException ex) {
+				MessageService.ShowError(ex.Message);
+				return;
+			}
+			if (withDebugging) {
+				DebuggerService.CurrentDebugger.Start(psi);
+			} else {
+				DebuggerService.CurrentDebugger.StartWithoutDebugging(psi);
+			}
+		}
+		
+		public override ProcessStartInfo CreateStartInfo()
+		{
+			throw new NotSupportedException();
+		}
+		
+		public override ItemType GetDefaultItemType(string fileName)
+		{
+			return ItemType.None;
+		}
+		
+		public override ProjectItem CreateProjectItem(IProjectItemBackendStore item)
+		{
+			return new UnknownProjectItem(Project, item);
+		}
+		
+		public override ICollection<ItemType> AvailableFileItemTypes {
+			get { return ItemType.DefaultFileItems; }
+		}
+		
+		public override void ProjectCreationComplete()
+		{
+			
+		}
+	}
+}

src/Main/Base/Project/Src/Project/Behaviors/ProjectBehaviorService.cs

@@ -0,0 +1,32 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using ICSharpCode.Core;
+
+namespace ICSharpCode.SharpDevelop.Project
+{
+	public static class ProjectBehaviorService
+	{
+		const string AddInPath = "/SharpDevelop/Workbench/ProjectBehaviors";
+		
+		public static ProjectBehavior LoadBehaviorsForProject(IProject project, ProjectBehavior defaultBehavior)
+		{
+			List<ProjectBehavior> behaviors = AddInTree.BuildItems<ProjectBehavior>(AddInPath, project, false);
+			ProjectBehavior first = null, current = null;
+			foreach (var behavior in behaviors) {
+				behavior.SetProject(project);
+				if (first == null)
+					first = behavior;
+				else
+					current.SetNext(behavior);
+				current = behavior;
+			}
+			if (current == null)
+				return defaultBehavior;
+			current.SetNext(defaultBehavior);
+			return first;
+		}
+	}
+}

src/Main/Base/Project/Src/Project/Behaviors/ProjectBehaviorSupportedConditionEvaluator.cs

@@ -0,0 +1,47 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using ICSharpCode.Core;
+
+namespace ICSharpCode.SharpDevelop.Project
+{
+	public class ProjectBehaviorSupportedConditionEvaluator : IConditionEvaluator
+	{
+		public bool IsValid(object owner, Condition condition)
+		{
+			Guid conditionGuid;
+			if (!Guid.TryParse(condition.Properties["guid"], out conditionGuid))
+				return true;
+			
+			string guidString;
+			if (owner is IProject)
+				guidString = FindGuidInProject((IProject)owner);
+			else if (ProjectService.CurrentProject != null)
+				guidString = FindGuidInProject(ProjectService.CurrentProject);
+			else
+				return false;
+			
+			Guid result;
+			foreach (string guid in guidString.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries)) {
+				if (Guid.TryParse(guid, out result) && conditionGuid == result)
+					return true;
+			}
+			
+			return false;
+		}
+
+		string FindGuidInProject(IProject project)
+		{
+			if (project is MSBuildBasedProject) {
+				string guid = ((MSBuildBasedProject)project).GetEvaluatedProperty("ProjectTypeGuids");
+				if (!string.IsNullOrEmpty(guid))
+					return guid;
+			}
+			
+			return project.TypeGuid;
+		}
+	}
+}