Created
February 22, 2019 18:17
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GXT 4.x JSNI example. Start the app later, by importing the script. Call into the application from Javascript.
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| package com.sencha.gxt.test.client.jsni_callinto; | |
| import com.google.gwt.core.client.EntryPoint; | |
| import com.sencha.gxt.widget.core.client.info.Info; | |
| public class JsniExample implements EntryPoint { | |
| private native void myInfo() /*-{ | |
| function myInfo(value) { | |
| // Call static java method | |
| // TODO: change the package path based on where you put this file... | |
| $entry(@com.sencha.gxt.test.client.jsni_callinto.JsniExample::myJavaInfo(Ljava/lang/String;)(value)); | |
| } | |
| // Add the method to the window, so it can be called from anywhere | |
| // Goto web browser console and call > this.myInfo('Test'); | |
| $wnd.myInfo = myInfo; | |
| }-*/; | |
| // called onload | |
| @Override | |
| public void onModuleLoad() { | |
| // add function to window object | |
| myInfo(); | |
| } | |
| public static void myJavaInfo(String value) { | |
| Info.display("Works", "From Javascript: " + value); | |
| } | |
| } |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <meta http-equiv="content-type" content="text/html; charset=UTF-8"> | |
| <meta name="viewport" | |
| content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"> | |
| <title>GXT Project 4.0</title> | |
| <!-- The project.gwt.xml entrypoint --> | |
| <!-- <script type="text/javascript" src="MyGxtProject40/MyGxtProject40.nocache.js"></script> --> | |
| </head> | |
| <body> | |
| <script> | |
| startApp = () => { | |
| // Instead import the javascript entrypoint at anytime. | |
| let st = document.createElement("script"); | |
| st.type = "text/javascript"; | |
| st.src = "./MyGxtProject40/MyGxtProject40.nocache.js"; | |
| document.getElementsByTagName('head')[0].appendChild(st) | |
| } | |
| </script> | |
| <!-- Manually import the GWT entrypoint in the future --> | |
| <!-- This will call onLoad --> | |
| <input type='button' value='Start app' onclick="startApp();"></input> | |
| <br/> | |
| <br/> | |
| <input type='button' value='Test info' onclick="window.myInfo('Hello')"></input> | |
| </body> | |
| </html> |
Author
branflake2267
commented
Feb 22, 2019
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