From 734a0b78ea5508f243caf18a50e36ac8918e11db Mon Sep 17 00:00:00 2001
From: "David A. Madore" <david@procyon.(none)>
Date: Tue, 13 Apr 2010 11:58:51 +0200
Subject: Create a todo deque class, and use it.

---
 org/madore/damlengine/TodoDeque.java | 53 ++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 org/madore/damlengine/TodoDeque.java

(limited to 'org/madore/damlengine/TodoDeque.java')

diff --git a/org/madore/damlengine/TodoDeque.java b/org/madore/damlengine/TodoDeque.java
new file mode 100644
index 0000000..e030e29
--- /dev/null
+++ b/org/madore/damlengine/TodoDeque.java
@@ -0,0 +1,53 @@
+package org.madore.damlengine;
+
+import java.util.Collection;
+import java.util.LinkedList;
+
+public final class TodoDeque {
+
+    // FIXME: having everything static is ugly as hell...  maybe this
+    // should be instantiatable?
+
+    private TodoDeque() { }  // Forbid instantiation
+
+    private static LinkedList<TodoItem> todoDeque = new LinkedList<TodoItem>();
+
+    {
+	todoDeque = new LinkedList<TodoItem>();
+    }
+
+    public static void registerAtEnd(TodoItem it) {
+	todoDeque.addLast(it);
+    }
+
+    public static void registerAtEnd(Collection<TodoItem> them) {
+	todoDeque.addAll(them);
+    }
+
+    public static void registerAtStart(TodoItem it) {
+	todoDeque.addFirst(it);
+    }
+
+    public static void registerAtStart(Collection<TodoItem> them) {
+	todoDeque.addAll(0, them);
+    }
+
+    public static TodoItem removeNext() {
+	return todoDeque.poll();
+    }
+
+    public static boolean dispatchOne() {
+	TodoItem it = removeNext();
+	if ( it != null ) {
+	    it.dispatch();
+	    return true;
+	} else
+	    return false;
+    }
+
+    public static void dispatchLoop() {
+	while ( dispatchOne() )
+	    ;
+    }
+
+}
-- 
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