Add IPlugin interface and change Plugin to be abstract class. Plugins can either implement IPlugin or extend Plugin.

framework/src/com/phonegap/api/IPlugin.java

@@ -0,0 +1,74 @@
+package com.phonegap.api;
+
+import org.json.JSONArray;
+import com.phonegap.DroidGap;
+import android.content.Intent;
+import android.webkit.WebView;
+
+/**
+ * Plugin interface must be implemented by any plugin classes.
+ *
+ * The execute method is called by the PluginManager.
+ */
+public interface IPlugin {
+		
+	/**
+	 * Executes the request and returns PluginResult.
+	 * 
+	 * @param action 	The action to execute.
+	 * @param args 		JSONArry of arguments for the plugin.
+	 * @return 			A PluginResult object with a status and message.
+	 */
+	PluginResult execute(String action, JSONArray args);
+
+	/**
+	 * Identifies if action to be executed returns a value and should be run synchronously.
+	 * 
+	 * @param action	The action to execute
+	 * @return			T=returns value
+	 */
+	public boolean isSynch(String action);
+
+	/**
+	 * Sets the context of the Plugin. This can then be used to do things like
+	 * get file paths associated with the Activity.
+	 * 
+	 * @param ctx The context of the main Activity.
+	 */
+	void setContext(DroidGap ctx);
+
+	/**
+	 * Sets the main View of the application, this is the WebView within which 
+	 * a PhoneGap app runs.
+	 * 
+	 * @param webView The PhoneGap WebView
+	 */
+	void setView(WebView webView);
+		
+    /**
+     * Called when the system is about to start resuming a previous activity. 
+     */
+    void onPause();
+
+    /**
+     * Called when the activity will start interacting with the user. 
+     */
+    void onResume();
+    
+    /**
+     * The final call you receive before your activity is destroyed. 
+     */
+    void onDestroy();
+	
+    /**
+     * Called when an activity you launched exits, giving you the requestCode you started it with,
+     * the resultCode it returned, and any additional data from it. 
+     * 
+     * @param requestCode		The request code originally supplied to startActivityForResult(), 
+     * 							allowing you to identify who this result came from.
+     * @param resultCode		The integer result code returned by the child activity through its setResult().
+     * @param data				An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
+     */
+    void onActivityResult(int requestCode, int resultCode, Intent intent);
+
+}

framework/src/com/phonegap/api/Plugin.java

@@ -1,10 +1,7 @@
 package com.phonegap.api;
 
 import org.json.JSONArray;
-
 import com.phonegap.DroidGap;
-
-import android.content.Context;
 import android.content.Intent;
 import android.webkit.WebView;
 
@@ -13,7 +10,11 @@ import android.webkit.WebView;
  *
  * The execute method is called by the PluginManager.
  */
-public interface Plugin {
+public abstract class Plugin implements IPlugin {
+
+    public WebView webView;					// WebView object
+    public DroidGap ctx;						// DroidGap object
+
 	/**
 	 * Executes the request and returns PluginResult.
 	 * 
@@ -21,7 +22,7 @@ public interface Plugin {
 	 * @param args 		JSONArry of arguments for the plugin.
 	 * @return 			A PluginResult object with a status and message.
 	 */
-	PluginResult execute(String action, JSONArray args);
+	public abstract PluginResult execute(String action, JSONArray args);
 
 	/**
 	 * Identifies if action to be executed returns a value and should be run synchronously.
@@ -29,7 +30,9 @@ public interface Plugin {
 	 * @param action	The action to execute
 	 * @return			T=returns value
 	 */
-	public boolean isSynch(String action);
+	public boolean isSynch(String action) {
+		return false;
+	}
 
 	/**
 	 * Sets the context of the Plugin. This can then be used to do things like
@@ -37,7 +40,9 @@ public interface Plugin {
 	 * 
 	 * @param ctx The context of the main Activity.
 	 */
-	void setContext(DroidGap ctx);
+	public void setContext(DroidGap ctx) {
+		this.ctx = ctx;
+	}
 
 	/**
 	 * Sets the main View of the application, this is the WebView within which 
@@ -45,22 +50,27 @@ public interface Plugin {
 	 * 
 	 * @param webView The PhoneGap WebView
 	 */
-	void setView(WebView webView);
+	public void setView(WebView webView) {
+		this.webView = webView;
+	}
 		
     /**
      * Called when the system is about to start resuming a previous activity. 
      */
-    void onPause();
+    public void onPause() {
+    }
 
     /**
      * Called when the activity will start interacting with the user. 
      */
-    void onResume();
+    public void onResume() {
+    }
     
     /**
      * The final call you receive before your activity is destroyed. 
      */
-    void onDestroy();
+    public void onDestroy() {
+    }
 	
     /**
      * Called when an activity you launched exits, giving you the requestCode you started it with,
@@ -71,6 +81,16 @@ public interface Plugin {
      * @param resultCode		The integer result code returned by the child activity through its setResult().
      * @param data				An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
      */
-    void onActivityResult(int requestCode, int resultCode, Intent intent);
+    public void onActivityResult(int requestCode, int resultCode, Intent intent) {
+    }
+
+    /**
+     * Send JavaScript statement back to JavaScript.
+     * 
+     * @param statement
+     */
+    public void sendJavascript(String statement) {
+    	this.ctx.callbackServer.sendJavascript(statement);
+    }
 
 }