reading preferences from phonegap.xml

adds PreferenceNode and PreferenceSet classes as wrappers for the W3C
config.xml <preference> nodes

populates a PreferenceSet @preferences member

framework/src/com/phonegap/PreferenceSet.java

@@ -0,0 +1,33 @@
+package com.phonegap;
+
+import java.util.HashSet;
+
+import com.phonegap.PreferenceNode;
+
+public class PreferenceSet {
+    private HashSet<PreferenceNode> innerSet;
+
+    public PreferenceSet() {
+        this.innerSet = new HashSet<PreferenceNode>();
+    }
+
+    public void add(PreferenceNode node) {
+        this.innerSet.add(node);
+    }
+
+    public int size() {
+        return this.innerSet.size();
+    }
+
+    public void clear() {
+        this.innerSet.clear();
+    }
+
+    public String pref(String prefName) {
+        for (PreferenceNode n : innerSet)
+            if (prefName.equals(n.name))
+                return n.value;
+
+        return null;
+    }
+}