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//
// RaiseEventMethodGenerator.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 Xamarin <http://xamarin.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using ICSharpCode.NRefactory.CSharp;
using MonoDevelop.Core;
using MonoDevelop.Ide.Gui;
using Gtk;
using System.Collections.Generic;
using MonoDevelop.Refactoring;
using System.Text;
using ICSharpCode.NRefactory.TypeSystem;
using System.Linq;
namespace MonoDevelop.CodeGeneration
{
class RaiseEventMethodGenerator : ICodeGenerator
{
public string Icon {
get {
return "md-event";
}
}
public string Text {
get {
return GettextCatalog.GetString ("Event OnXXX method");
}
}
public string GenerateDescription {
get {
return GettextCatalog.GetString ("Select event to generate the method for.");
}
}
public bool IsValid (CodeGenerationOptions options)
{
return new CreateEventMethod (options).IsValid ();
}
public IGenerateAction InitalizeSelection (CodeGenerationOptions options, Gtk.TreeView treeView)
{
var createEventMethod = new CreateEventMethod (options);
createEventMethod.Initialize (treeView);
return createEventMethod;
}
class CreateEventMethod : AbstractGenerateAction
{
const string handlerName = "handler";
public CreateEventMethod (CodeGenerationOptions options) : base (options)
{
}
static string GetEventMethodName (IMember member)
{
return "On" + member.Name;
}
protected override IEnumerable<object> GetValidMembers ()
{
if (Options.EnclosingType == null || Options.EnclosingMember != null)
yield break;
foreach (var e in Options.EnclosingType.Events) {
if (e.IsSynthetic)
continue;
var invokeMethod = e.ReturnType.GetDelegateInvokeMethod ();
if (invokeMethod == null)
continue;
if (Options.EnclosingType.GetMethods (m => m.Name == GetEventMethodName (e)).Any ())
continue;
yield return e;
}
}
protected override IEnumerable<string> GenerateCode (List<object> includedMembers)
{
foreach (IMember member in includedMembers) {
var invokeMethod = member.ReturnType.GetDelegateInvokeMethod ();
if (invokeMethod == null)
continue;
var methodDeclaration = new MethodDeclaration () {
Name = GetEventMethodName (member),
ReturnType = new PrimitiveType ("void"),
Modifiers = Modifiers.Protected | Modifiers.Virtual,
Parameters = {
new ParameterDeclaration (Options.CreateShortType (invokeMethod.Parameters [1].Type), invokeMethod.Parameters [1].Name)
},
Body = new BlockStatement () {
new VariableDeclarationStatement (
new SimpleType ("var"),//Options.CreateShortType (member.ReturnType),
handlerName,
new MemberReferenceExpression (new ThisReferenceExpression (), member.Name)
),
new IfElseStatement () {
Condition = new BinaryOperatorExpression (new IdentifierExpression (handlerName), BinaryOperatorType.InEquality, new PrimitiveExpression (null)),
TrueStatement = new ExpressionStatement (new InvocationExpression (new IdentifierExpression (handlerName)) {
Arguments = {
new ThisReferenceExpression (),
new IdentifierExpression (invokeMethod.Parameters [1].Name)
}
})
}
}
};
yield return methodDeclaration.ToString (Options.FormattingOptions);
}
}
}
}
}
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