How to implement IPC(Inter Portlet Communication) of 2 GWT portlets

[12年前 に Jianjun Chen によって更新されました。]

I implement IPC of 2 GWT portlets. I consider GWT with Liferay is more powerful.

The IPC explains see there(http://www.liferay.com/zh/community/wiki/-/wiki/Main/portlet+to+portlet+communication), I reference [2.3 Client-Side IPC] in this article. I write GWT portlet since 2007 from Liferay 4.2.3 to 5.1.2 and 5.2.3. Now is based on Liferay 6.0.6.

There are 2 GWT portlets, one is ipcA-portlet, It will trigger event when some button clicked.

    button.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                getService().sayHello(name.getText(), new AsyncCallback(){

                    public void onFailure(Throwable thrwbl) {
                        Window.alert(thrwbl.getMessage());
                    }

                    public void onSuccess(Object t) {
                        //label.setText(t.toString());
                        fire(t.toString());
                    }
                });
            }
        });
    public static native void fire(String msg) /*-{
      $wnd.Liferay.fire('sayhello', {
            name : msg,
        });

    }-*/;

Another portlet is ipcB-portlet, it will create a listener when initialize,

    public void onModuleLoad() {
        Panel rootpanel = RootPanel.get("layout-ipcB");

        MainPanel mainpanel = new MainPanel();
        mainpanel.setWidth("100%");
        rootpanel.add(mainpanel);
        listen(mainpanel);
    }

    public static native void listen(MainPanel mainpanel) /*-{
      $wnd.Liferay.on('sayhello', function(event) {
        $wnd.alert('I Say '+ event.name);
        // See http://code.google.com/webtoolkit/doc/latest/DevGuideCodingBasicsJSNI.html
        [e-mail]::change(Ljava/lang/String;)(event.name);
    });

    }-*/;

Deploy and put the 2 portlets to a same portal page, then click a button in ipcA-portlet, then it will trigger change event in ipcB-portlet.

Please reference attached war files.