Added demo code to Modal : events section.

Author: kevzlou7979

src/main/java/gwt/material/design/demo/client/application/components/dialogs/DialogsView.java

@@ -47,6 +47,14 @@ interface Binder extends UiBinder<Widget, DialogsView> {
 
         modalEvents.addOpenHandler(openEvent -> MaterialToast.fireToast("Opened"));
         modalEvents.addCloseHandler(closeEvent -> MaterialToast.fireToast("Closed"));
+
+        modal1.addOpenHandler(openEvent -> MaterialToast.fireToast("Modal 1 - Open"));
+        modal2.addOpenHandler(openEvent -> MaterialToast.fireToast("Modal 2 - Open"));
+        modal3.addOpenHandler(openEvent -> MaterialToast.fireToast("Modal 3 - Open"));
+
+        modal1.addCloseHandler(closeEvent -> MaterialToast.fireToast("Modal 1 - Closed"));
+        modal2.addCloseHandler(closeEvent -> MaterialToast.fireToast("Modal 2 - Closed"));
+        modal3.addCloseHandler(closeEvent -> MaterialToast.fireToast("Modal 3 - Closed"));
     }
 
     @UiHandler("btnOpenModal1")

src/main/java/gwt/material/design/demo/client/application/components/dialogs/DialogsView.ui.xml

@@ -170,6 +170,10 @@
         </m:MaterialModalFooter>
       </m:MaterialModal>
       <m:MaterialButton text="Modal with Events" ui:field="btnEvents" waves="LIGHT"/>
+      <demo:PrettyPre addStyleNames="lang-java">
+        &emsp;modalEvents.addOpenHandler(openEvent -> MaterialToast.fireToast("Opened"));<br/>
+        modalEvents.addCloseHandler(closeEvent -> MaterialToast.fireToast("Closed"));
+      </demo:PrettyPre>
     </m:MaterialRow>
 
     <m:MaterialRow addStyleNames="code">