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-rw-r--r--src/com/isode/stroke/signals/Signal4.java66
-rw-r--r--src/com/isode/stroke/signals/Slot4.java24
2 files changed, 90 insertions, 0 deletions
diff --git a/src/com/isode/stroke/signals/Signal4.java b/src/com/isode/stroke/signals/Signal4.java
new file mode 100644
index 0000000..6a29641
--- /dev/null
+++ b/src/com/isode/stroke/signals/Signal4.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2012-2013, Isode Limited, London, England.
+ * All rights reserved.
+ */
+
+package com.isode.stroke.signals;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import com.isode.stroke.signals.SignalConnection;
+import com.isode.stroke.signals.Slot;
+
+
+/**
+ * An approximation of the boost::signals system with 4 parameters
+ * @param <T1> Type 1
+ * @param <T2> Type 2
+ * @param <T3> Type 3
+ * @param <T4> Type 4
+ */
+public class Signal4<T1, T2, T3, T4> {
+ private final Map<SignalConnection, Slot4<T1, T2, T3, T4> > binds_ = Collections.synchronizedMap(
+ new HashMap<SignalConnection, Slot4<T1, T2, T3, T4> >());
+
+ /**
+ * Add a slot which will be notified
+ * @param bind slot, not null
+ * @return signal connection
+ */
+ public SignalConnection connect(Slot4<T1, T2, T3, T4> bind) {
+ final SignalConnection connection = new SignalConnection();
+ binds_.put(connection, bind);
+ connection.onDestroyed.connect(new Slot() {
+ public void call() {
+ binds_.remove(connection);
+ }
+ });
+ return connection;
+ }
+
+ /**
+ * Notify all slots(listeners)
+ * @param p1 parameter value 1
+ * @param p2 parameter value 2
+ * @param p3 parameter value 3
+ * @param p4 parameter value 4
+ */
+ public void emit(T1 p1, T2 p2, T3 p3, T4 p4) {
+ List<Slot4<T1, T2, T3, T4>> binds = new ArrayList<Slot4<T1, T2, T3, T4>>();
+ binds.addAll(binds_.values());
+ for (Slot4<T1, T2, T3, T4> bind : binds) {
+ bind.call(p1, p2, p3, p4);
+ }
+ }
+
+ /**
+ * Remove all slots(listeners)
+ */
+ public void disconnectAll() {
+ binds_.clear();
+ }
+}
diff --git a/src/com/isode/stroke/signals/Slot4.java b/src/com/isode/stroke/signals/Slot4.java
new file mode 100644
index 0000000..02e6fd9
--- /dev/null
+++ b/src/com/isode/stroke/signals/Slot4.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2012 - 2013, Isode Limited, London, England.
+ * All rights reserved.
+ */
+
+package com.isode.stroke.signals;
+
+/**
+ * Bind class for connecting to a signal with 4 parameters.
+ * @param <T1> Type 1
+ * @param <T2> Type 2
+ * @param <T3> Type 3
+ * @param <T4> Type 4
+ */
+public interface Slot4<T1, T2, T3, T4> {
+ /**
+ * This method will be called on notification from a signal
+ * @param p1 parameter value 1
+ * @param p2 parameter value 2
+ * @param p3 parameter value 3
+ * @param p4 parameter value 4
+ */
+ void call(T1 p1, T2 p2, T3 p3, T4 p4);
+}