Add toast plugin

mobile/src/nl/xservices/plugins/Toast.java

@@ -0,0 +1,56 @@
+package nl.xservices.plugins;
+
+import android.view.Gravity;
+import org.apache.cordova.CallbackContext;
+import org.apache.cordova.CordovaPlugin;
+import org.json.JSONArray;
+import org.json.JSONException;
+
+public class Toast extends CordovaPlugin {
+
+  private static final String ACTION_SHOW_EVENT = "show";
+
+  @Override
+  public boolean execute(String action, JSONArray args, final CallbackContext callbackContext) throws JSONException {
+    if (ACTION_SHOW_EVENT.equals(action)) {
+
+      final String message = args.getString(0);
+      final String duration = args.getString(1);
+      final String position = args.getString(2);
+
+      cordova.getActivity().runOnUiThread(new Runnable() {
+        public void run() {
+          android.widget.Toast toast = android.widget.Toast.makeText(webView.getContext(), message, 0);
+
+          if ("top".equals(position)) {
+            toast.setGravity(Gravity.TOP|Gravity.CENTER_HORIZONTAL, 0, 20);
+          } else  if ("bottom".equals(position)) {
+            toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 20);
+          } else if ("center".equals(position)) {
+            toast.setGravity(Gravity.CENTER_VERTICAL|Gravity.CENTER_HORIZONTAL, 0, 0);
+          } else {
+            callbackContext.error("invalid position. valid options are 'top', 'center' and 'bottom'");
+            return;
+          }
+
+          if ("short".equals(duration)) {
+            toast.setDuration(android.widget.Toast.LENGTH_SHORT);
+          } else if ("long".equals(duration)) {
+            toast.setDuration(android.widget.Toast.LENGTH_LONG);
+          } else {
+            callbackContext.error("invalid duration. valid options are 'short' and 'long'");
+            return;
+          }
+
+          toast.show();
+          callbackContext.success();
+        }
+      });
+
+      return true;
+    } else {
+      callbackContext.error("toast." + action + " is not a supported function. Did you mean '" + ACTION_SHOW_EVENT + "'?");
+      return false;
+    }
+  }
+}