1 files changed, 50 insertions, 0 deletions
diff --git a/src/com/isode/stroke/streamstack/StreamLayer.java b/src/com/isode/stroke/streamstack/StreamLayer.java
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+++ b/src/com/isode/stroke/streamstack/StreamLayer.java
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+/*
+ * Copyright (c) 2010 Remko Tron�on
+ * Licensed under the GNU General Public License v3.
+ * See Documentation/Licenses/GPLv3.txt for more information.
+ */
+/*
+ * Copyright (c) 2010-2011, Isode Limited, London, England.
+ * All rights reserved.
+ */
+
+package com.isode.stroke.streamstack;
+
+import com.isode.stroke.base.ByteArray;
+
+/**
+ * Because of the lack of multiple inheritance in Java, this implements
+ * the abstract methods that should have been implemented in
+ * LowLayer and HighLayer.
+ */
+public abstract class StreamLayer implements LowLayer, HighLayer {
+
+    public HighLayer getParentLayer() {
+        return parentLayer;
+    }
+
+    public void setParentLayer(final HighLayer parentLayer) {
+        this.parentLayer = parentLayer;
+    }
+
+    public void writeDataToParentLayer(final ByteArray data) {
+        assert parentLayer != null;
+        parentLayer.handleDataRead(data);
+    }
+
+    public LowLayer getChildLayer() {
+        return childLayer;
+    }
+
+    public void setChildLayer(final LowLayer childLayer) {
+        this.childLayer = childLayer;
+    }
+
+    public void writeDataToChildLayer(final ByteArray data) {
+        assert childLayer != null;
+        childLayer.writeData(data);
+    }
+
+    private HighLayer parentLayer;
+    private LowLayer childLayer;
+}