Differences

This shows you the differences between two versions of the page.

--- compcode [2007/06/13 07:34]
lavirotte
+++ compcode [2011/06/06 10:48] (current)
Stéphane Lavirotte [Source Code]
@@ Line 1: / Line 1: @@
-<code csharp>
+====== Sample of a Bean ======
-using WComp.Beans; // It contains the definition of the attribute [Bean]
-using System.Threading; // For the thread demo purposes
-namespace Your_Namespace_Name {
+===== Source Code =====
-    [Bean]
+Here is a sample code of a component in C# (save this to a file called Your_CSharpBean_Name.cs) :
-    public class Your_CSharpBean_Name {
-        public Your_CSharpBean_Name() {
+<code csharp>
-            // Put here your init instructions
+using System;
-            // Example of a loop that call the output
+using System.Threading; // For the thread demo purposes
-            // every second.
+using WComp.Beans;
-            new Thread(new ThreadStart(ThreadLoopMethod)).Start();
-        }
-         // Loop sample
+namespace WComp.Beans
-         public void ThreadLoopMethod() {
+{
-             while(Thread.CurrentThread.IsAlive) {
+	/// <summary>
-                 Thread.Sleep(1000);
+	/// This is a sample bean, using a thread, which has an integer evented property and a method
-                 double result;
+        ///     to start the thread.
-                 // Check if the output is connected
+	///
-                 if(Output_Sample != null)
+	/// Notes: this bean uses the IThreadCreator interface providing a cleanup method named `Stop()'.
-                     // call the connected methods sequentially
+	/// Several classes can be defined or used by a Bean, but only the class with the
-                     result = Output_Sample(123);
+	/// [Bean] attribute will be available in WComp. Its ports will be all public methods,
-                // and so on...
+	///     events and properties definied in that class.
-             }
+	/// </summary>
-        }
+	[Bean(Category="MyCategory")]
+	public class BeanThread1 : IThreadCreator {
+		private Thread t;	  // Private attributes of the class
+		private volatile bool run = false;
+		private int sleepVal = 1000;
+		private volatile int eventValue;
+		public BeanThread1() {
+			// Put here your init instructions
+			eventValue = 10;
+		}
+		public void Start() {  // method starting the thread
+			if (!run) {
+				run = true;
+				t = new Thread(new ThreadStart(ThreadLoopMethod));
+				t.Start();
+			}
+		}
+		public void Stop() {   // IThreadCreator defines the Stop() method
+			run = false;
+		}
+		 // Loop sample
+		 public void ThreadLoopMethod() {
+			 while(run) {
+				 Thread.Sleep(sleepVal);
+				 // Check if the output is connected
+				 if(Output_Sample != null)
+					 // call the connected methods sequentially
+					 Output_Sample(eventValue);
+				// and so on...
+			 }
+		}
+		// --- Start: Input port sample ---
+		// an input port is a public method (like below)
+		public void Input_Sample(int intParam) {
+			eventValue = intParam;
+			// No return value is expected in WComp:
+			// results are given using events
+		}
+		// --- End: Input port sample ---
+		// --- Start: Output port sample ---
+		public delegate void Output_Sample_Signature(int val);
+		// The delegate defines the signature of the output method
+		public event Output_Sample_Signature Output_Sample;
+		// The output port is the event, named here Output_Sample
+		// --- End: Output port sample ---
+	}
+}
-        // --- Start: Input port sample ---
+</code>
-        // an input port is a method (below)
-        public int Input_Sample(string param_name) {
-            string pn = param_name; // You may use the parameters
-            return 0; // You may return anything
-        }
-        // --- End: Input port sample ---
-        // --- Start: Output port sample ---
+===== Compilation =====
-        public delegate double Output_Sample_Signature(int param_name);
-        // This is the signature of the output method
+Here is a sample of the command line compilation:
-        public event Output_Sample_Signature Output_Sample;
+<code>
-        // The output port is the event (before)
+csc.exe /target:library /r:Beans.dll Sample_Component.cs
-        // --- End: Output port sample ---
-    }
-}
 </code>
+You will find Beans.dll in the SharpWComp distrib.