JCEF-鼠标右键菜单(5)

为鼠标添加自定义菜单，比较简单，实现一个Handler就行

Hanler实现类

public class MenuHandler extends CefContextMenuHandlerAdapter{
     
    private final static int MENU_ID_INJECTION=10000;
     
    private final static int MENU_ID_ADDTEXT=10001;
     
    @Override
    public void onBeforeContextMenu(CefBrowser browser, CefFrame frame, CefContextMenuParams params, CefMenuModel model) {
        //清除菜单项
        model.clear();
         
        //剪切、复制、粘贴
        model.addItem(MenuId.MENU_ID_COPY, "复制");
        model.addItem(MenuId.MENU_ID_CUT, "剪切");
        model.addItem(MenuId.MENU_ID_PASTE, "粘贴");
        model.addSeparator();
         
        model.addItem(MenuId.MENU_ID_BACK, "返回");
        model.setEnabled(MenuId.MENU_ID_BACK, browser.canGoBack());
         
        model.addItem(MenuId.MENU_ID_FORWARD, "前进");
        model.setEnabled(MenuId.MENU_ID_FORWARD, browser.canGoForward());
         
        model.addItem(MenuId.MENU_ID_RELOAD, "刷新");
         
        model.addSeparator();
        //创建子菜单
        CefMenuModel cmodel=model.addSubMenu(MENU_ID_INJECTION, "脚本注入");
         
        cmodel.addItem(MENU_ID_ADDTEXT, "添加一段文本");
    }
 
    /*
     * @see org.cef.handler.CefContextMenuHandler#onContextMenuCommand(org.cef.browser.CefBrowser, org.cef.browser.CefFrame, org.cef.callback.CefContextMenuParams, int, int)
     */
    @Override
    public boolean onContextMenuCommand(CefBrowser browser, CefFrame frame, CefContextMenuParams params, int commandId, int eventFlags) {
        switch(commandId) {
        case MenuId.MENU_ID_RELOAD:
            browser.reload();
            return true;
        case MENU_ID_ADDTEXT:
            browser.executeJavaScript("document.body.innerHTML+='<div>添加一段文本</div>';", browser.getURL(), 0);
            return true;
        }
        return false;
    }
}

测试类，在cefClient中添加此Handler：cefClient.addContextMenuHandler(new MenuHandler());

public class MouseMenuTestFrame extends JFrame{
     
    /**
     *
     */
    private static final long serialVersionUID = 5944953587408136931L;
 
    public static void main(String[] args) {
        String url=System.getProperty("user.dir")+"/jstest.html";
        new MouseMenuTestFrame(url);
    }
     
    public MouseMenuTestFrame(String url) {
        //是否Linux系统
        boolean useOSR=OS.isLinux();
        //是否透明
        boolean isTransparent=false;
        //添加Handler，在CEFAPP状态为终止时退出程序
        CefApp.addAppHandler(new CefAppHandlerAdapter(null) {
            @Override
            public void stateHasChanged(org.cef.CefApp.CefAppState state) {
                // Shutdown the app if the native CEF part is terminated
                if (state == CefAppState.TERMINATED) System.exit(0);
            }
        });
         
        CefSettings settings = new CefSettings();
        settings.windowless_rendering_enabled = useOSR;
        //获取CefApp实例
        CefApp cefApp=CefApp.getInstance(settings);
        //创建客户端实例
        CefClient cefClient = cefApp.createClient();
        //添加鼠标右键菜单handler
        cefClient.addContextMenuHandler(new MenuHandler());
         
        //添加一个JS交互
        jsActive(cefClient);
         
        //创建浏览器实例
        CefBrowser cefBrowser = cefClient.createBrowser(url, useOSR, isTransparent);
         
        //将浏览器UI添加到窗口中
         
        getContentPane().add(cefBrowser.getUIComponent(), BorderLayout.CENTER);
         
        pack();
        setTitle("测试JCEF-鼠标右键事件");
        setSize(800, 600);
        setVisible(true);
        //添加一个窗口关闭监听事件
        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                CefApp.getInstance().dispose();
                dispose();
            }
        });
    }
     
    /**
     * 添加js交互
     * @author:liuming
     */
    public void jsActive(CefClient client) {
         //配置一个查询路由,html页面可使用 window.java({}) 和 window.javaCancel({}) 来调用此方法
         CefMessageRouterConfig cmrc=new CefMessageRouterConfig("java","javaCancel");
         //创建查询路由
         CefMessageRouter cmr=CefMessageRouter.create(cmrc);
         cmr.addHandler(new CefMessageRouterHandler() {
             
            @Override
            public void setNativeRef(String str, long val) {
                System.out.println(str+"  "+val);
            }
             
            @Override
            public long getNativeRef(String str) {
                System.out.println(str);
                return 0;
            }
             
            @Override
            public void onQueryCanceled(CefBrowser browser, CefFrame frame, long query_id) {
                System.out.println("取消查询:"+query_id);
            }
             
            @Override
            public boolean onQuery(CefBrowser browser, CefFrame frame, long query_id, String request, boolean persistent,
                    CefQueryCallback callback) {
                System.out.println("request:"+request+"\nquery_id:"+query_id+"\npersistent:"+persistent);
                 
                callback.success("Java后台处理了数据");
                return true;
            }
        }, true);
        client.addMessageRouter(cmr);
    }
}

本示例教程开源项目地址：
github：https://github.com/lieyanfeimao/JcefTest.git
码云：https://gitee.com/edadmin/JcefTest.git

开源项目：

PowerOfLongedJcef【注：本项目在win10 64位系统上开发，不保证其他系统可以直接运行】

github：https://github.com/lieyanfeimao/PowerOfLongedJcef.git
码云：https://gitee.com/edadmin/PowerOfLongedJcef.git