--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/internal/cocoa/NSOperation.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,112 @@
+/*******************************************************************************
+ * Copyright (c) 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *     
+ * Port to the D Programming language:
+ *     Jacob Carlborg <jacob.carlborg@gmail.com>
+ *******************************************************************************/
+module dwt.internal.cocoa.NSOperation;
+
+import dwt.internal.cocoa.NSArray;
+import dwt.internal.cocoa.NSInteger;
+import dwt.internal.cocoa.NSObject;
+import dwt.internal.cocoa.OS;
+import objc = dwt.internal.objc.runtime;
+
+alias NSInteger NSOperationQueuePriority;
+
+enum
+{
+    NSOperationQueuePriorityVeryLow = -8,
+    NSOperationQueuePriorityLow = -4,
+    NSOperationQueuePriorityNormal = 0,
+    NSOperationQueuePriorityHigh = 4,
+    NSOperationQueuePriorityVeryHigh = 8
+}
+
+public class NSOperation : NSObject
+{
+
+    public this ()
+    {
+        super();
+    }
+
+    public this (objc.id id)
+    {
+        super(id);
+    }
+
+    public void addDependency (NSOperation op)
+    {
+        OS.objc_msgSend(this.id, OS.sel_addDependency_1, op !is null ? op.id : null);
+    }
+
+    public void cancel ()
+    {
+        OS.objc_msgSend(this.id, OS.sel_cancel);
+    }
+
+    public NSArray dependencies ()
+    {
+        objc.id result = OS.objc_msgSend(this.id, OS.sel_dependencies);
+        return result !is null ? new NSArray(result) : null;
+    }
+
+    public bool isCancelled ()
+    {
+        return OS.objc_msgSend(this.id, OS.sel_isCancelled) !is null;
+    }
+
+    public bool isConcurrent ()
+    {
+        return OS.objc_msgSend(this.id, OS.sel_isConcurrent) !is null;
+    }
+
+    public bool isExecuting ()
+    {
+        return OS.objc_msgSend(this.id, OS.sel_isExecuting) !is null;
+    }
+
+    public bool isFinished ()
+    {
+        return OS.objc_msgSend(this.id, OS.sel_isFinished) !is null;
+    }
+
+    public bool isReady ()
+    {
+        return OS.objc_msgSend(this.id, OS.sel_isReady) !is null;
+    }
+
+    public void main ()
+    {
+        OS.objc_msgSend(this.id, OS.sel_main);
+    }
+
+    public NSOperationQueuePriority queuePriority ()
+    {
+        return cast(NSOperationQueuePriority) OS.objc_msgSend(this.id, OS.sel_queuePriority);
+    }
+
+    public void removeDependency (NSOperation op)
+    {
+        OS.objc_msgSend(this.id, OS.sel_removeDependency_1, op !is null ? op.id : null);
+    }
+
+    public void setQueuePriority (NSOperationQueuePriority p)
+    {
+        OS.objc_msgSend(this.id, OS.sel_setQueuePriority_1, p);
+    }
+
+    public void start ()
+    {
+        OS.objc_msgSend(this.id, OS.sel_start);
+    }
+
+}