Java 类com.vaadin.ui.JavaScript 实例源码

void callBlind(final JavaScriptCallback<Void> javaScriptCallback)
{
    final Stopwatch timer = Stopwatch.createStarted();
    final ScheduledFuture<?> future = createTimeoutHook();

    JavaScript.getCurrent().addFunction(hookName, new JavaScriptFunction()
    {
        boolean done = false;

        private static final long serialVersionUID = 1L;

        @Override
        public void call(JsonArray arguments)
        {
            logger.debug("Handling response for " + hookName);
            if (!done)
            {
                done = true;
                javaScriptCallback.callback(null);
            }
            else
            {
                logger.warn("This appears to have been a duplicate callback, ignoring it!");
            }
            future.cancel(false);
            removeHooks(hookName, errorHookName);
            if (timer.elapsed(TimeUnit.MILLISECONDS) > EXPECTED_RESPONSE_TIME_MS)
            {
                logger.warn(jsToExecute + "\n\nResponded after {}ms", timer.elapsed(TimeUnit.MILLISECONDS));
            }

        }
    });
    setupErrorHook(future);
    JavaScript.getCurrent().execute(wrapJSInTryCatchBlind(jsToExecute));

}

public FileExample() {
    setCaption("Interactive SVG");
    addComponent(new MLabel(
            "A simple example from an svg file using Embedded component. Unlike with Image component, the SVGs JS etc are active. The example also demonstrates how to provide a trivial server side integration API for the SVG."));
    Embedded svg = new Embedded();
    svg.setWidth("400px");
    svg.setHeight("400px");
    svg.setSource(new ClassResource("/pull.svg"));

    // Expose a JS hook that pull.svg file calls when clicked
    JavaScript.getCurrent().addFunction("callMyVaadinFunction", (JsonArray arguments) -> {
        Notification.show("Message from SVG:" + arguments.getString(0));
    });

    addComponent(svg);
}

@SuppressWarnings("serial")
private final void registerJavaScriptFunctionsIfNeeded()
{
    if (jsFunctionsRegistered.getAndSet(true))
    {
        return; // already registered
    }

    final JavaScript javaScript = JavaScript.getCurrent();
    javaScript.addFunction(JS_FUNC_OnSwipe, new JavaScriptFunction()
    {
        @Override
        public void call(final JsonArray arguments)
        {
            invokeOnSwipe(arguments);
        }
    });
}

public static void getCookieValue(String key, final Callback callback) {
    final String callbackid = "hybridbpmcookie"+UUID.randomUUID().toString().substring(0,8);
    JavaScript.getCurrent().addFunction(callbackid, new JavaScriptFunction() {

        @Override
        public void call(JsonArray arguments) {
            JavaScript.getCurrent().removeFunction(callbackid);
            if(arguments.length() == 0) {
                callback.onValue(null);
            } else {
                callback.onValue(arguments.getString(0));
            }
        }
    });
    JavaScript.getCurrent().execute(String.format(
            "var nameEQ = \"%2$s=\";var ca = document.cookie.split(';');for(var i=0;i < ca.length;i++) {var c = ca[i];while (c.charAt(0)==' ') c = c.substring(1,c.length); if (c.indexOf(nameEQ) == 0) {%1$s( c.substring(nameEQ.length,c.length)); return;};} %1$s();", 
            callbackid,key
    ));

}

public static void detectCookieValue(String key, final Callback callback) {
    final String callbackid = "viritincookiecb"+UUID.randomUUID().toString().substring(0,8);
    JavaScript.getCurrent().addFunction(callbackid, new JavaScriptFunction() {
        private static final long serialVersionUID = -3426072590182105863L;

        @Override
        public void call(JsonArray arguments) {
            JavaScript.getCurrent().removeFunction(callbackid);
            if(arguments.length() == 0) {
                callback.onValueDetected(null);
            } else {
                callback.onValueDetected(arguments.getString(0));
            }
        }
    });

    JavaScript.getCurrent().execute(String.format(
            "var nameEQ = \"%2$s=\";var ca = document.cookie.split(';');for(var i=0;i < ca.length;i++) {var c = ca[i];while (c.charAt(0)==' ') c = c.substring(1,c.length); if (c.indexOf(nameEQ) == 0) {%1$s( c.substring(nameEQ.length,c.length)); return;};} %1$s();", 
            callbackid,key
    ));

}

/**
 * Do on test closing
 * 
 * @param event
 */
public void requestClose(@Observes final CloseTestEvent event) {
    log.debug("close requested");
    if (requestBack) {
        log.debug("closing ProcessUI with history back");
        JavaScript javaScript = ui.getPage().getJavaScript();
        javaScript.execute("window.history.back();");
        ui.requestClose();

    } else {
        String path = VaadinServlet.getCurrent().getServletContext().getContextPath();
        ui.getPage().setLocation(path + CLOSE_URL);
        // this is also possible way but not for SWT browser
        // Page.getCurrent().getJavaScript().execute("window.setTimeout(function(){/*window.open('','_self','');*/window.close();},10);")

        log.debug("closing ProcessUI");
        ui.requestClose();
    }
}

public static void showHelpBrowserWindow(String guid) {
    JavaScript javaScript = MainUI.getCurrent().getPage().getJavaScript();
    if (!useFirstName) {
        javaScript.execute(closeNativeWindow(HELP_WINDOW_NAME_1));
    } else {
        javaScript.execute(closeNativeWindow(HELP_WINDOW_NAME_2));
    }

    MainUI.getCurrent().getPage().open("/WebHelp/" + guid,
            useFirstName ? HELP_WINDOW_NAME_1 : HELP_WINDOW_NAME_2);
    useFirstName = !useFirstName;
}

public static void setBeforePageUnloadMessage(final String message)
{
    final JavaScript javaScript = Page.getCurrent().getJavaScript();
    if (message == null || message.trim().isEmpty())
    {
        javaScript.execute("$(window).off('beforeunload');");
    }
    else
    {
        // TODO: escape the message
        javaScript.execute("$(window).on('beforeunload', function() { return \"" + message + "\"; });");
    }
}

public synchronized void enable(final Component component, final SwipeHandler handler)
{
    Preconditions.checkNotNull(component, "component is null");
    final String componentId = component.getId();
    Preconditions.checkNotNull(componentId, "componentId is null");

    final ComponentSwipe swipe = new ComponentSwipe(componentId, handler);

    component2swipe.put(component, swipe);
    componentId2swipe.put(componentId, swipe);

    registerJavaScriptFunctionsIfNeeded();

    final JavaScript javaScript = JavaScript.getCurrent();
    javaScript.execute(""
            + "if (!window.swipesMap) { window.swipesMap={}; }"
            //
            + "window.swipesMap['" + componentId + "'] = Swiped.init({"
            + "query: '#" + componentId + "'"
            + ", left: 300"
            + ", right: 300"
            + ", tolerance: 200"
            + ", onOpen: function() { " + JS_FUNC_OnSwipe + "('" + componentId + "'); }"
            + "});"
            //
            + "\n console.log('Enabled swiping for element: " + componentId + "');"
            );
}

public void destroy()
{
    JavaScript.getCurrent().execute("window.swipesMap['" + componentId + "'].destroy(false);"); // isRemoveNode=false
}

public static void setCookie(String key, String value, String path) {
    JavaScript.getCurrent().execute(String.format(
            "document.cookie = \"%s=%s; path=%s\";", key, value, path
    ));
}

private static void addTypeStyle(final Long tagId, final String color) {
    final JavaScript javaScript = UI.getCurrent().getPage().getJavaScript();
    UI.getCurrent()
            .access(() -> javaScript.execute(
                    HawkbitCommonUtil.getScriptSMHighlightWithColor(".v-table-row-distribution-upload-type-" + tagId
                            + "{background-color:" + color + " !important;background-image:none !important }")));
}

private void _jsSetTimeStep(TimeStep timeStep) {
    JavaScript.getCurrent()
            .execute("document.getElementById('" + LIVE_CHART_ID
                    + "').firstElementChild.contentDocument.getElementsByClassName('stepli')["
                    + timeStep.ordinal() + "].click();");
}

public static void setCookie(String key, String value, LocalDateTime expirationTime) {

    String expires = toCookieGMTDate(expirationTime);

    JavaScript.getCurrent().execute(String.format(
            "document.cookie = \"%s=%s; Expires=%s\";", key, value, expires
    ));
}

public static void setCookie(String key, String value, String path, LocalDateTime expirationTime) {

    String expires = toCookieGMTDate(expirationTime);

    JavaScript.getCurrent().execute(String.format(
            "document.cookie = \"%s=%s; path=%s\"; Expires=%s\";", key, value, path, expires
    ));
}

void removeHooks(final String hook1, final String hook2)
{
    final JavaScript js = JavaScript.getCurrent();
    js.removeFunction(hook1);
    js.removeFunction(hook2);

}

private void setupErrorHook(final ScheduledFuture<?> future)
{
    trace = new JavaScriptException("Java Script Invoked From Here, JS:" + jsToExecute);

    JavaScript.getCurrent().addFunction(errorHookName, new JavaScriptFunction()
    {

        private static final long serialVersionUID = 1L;

        @Override
        public void call(JsonArray arguments)
        {
            try
            {
                String value = arguments.getString(0);
                logger.error(jsToExecute + " -> resulted in the error: " + value, trace);
                Exception ex = new JavaScriptException(trace.getMessage() + " , JS Cause: " + value, trace);
                ErrorWindow.showErrorWindow(ex);
            }
            catch (Exception e)
            {
                ErrorWindow.showErrorWindow(trace);
            }
            finally
            {
                future.cancel(false);
                JavaScript.getCurrent().removeFunction(hookName);
                JavaScript.getCurrent().removeFunction(errorHookName);

            }

        }
    });

}

private void ajaxRefreshInit(JavaScriptFunction intervalFn) {
    JavaScript.getCurrent().addFunction("Persephone.logs.refreshLogs", intervalFn);

    String js = String.format("Persephone.logs.refreshLogsInterval = setInterval(Persephone.logs.refreshLogs, %s);", refreshTimeout * 1000);
    JavaScript.getCurrent().execute(js);
}

private void ajaxRefreshDestroy() {
    JavaScript.getCurrent().execute("clearInterval(Persephone.logs.refreshLogsInterval)");
    JavaScript.getCurrent().removeFunction("Persephone.logs.refreshLogs");
}

public void open()
{
    JavaScript.getCurrent().execute("window.swipesMap['" + componentId + "'].open();");
}

public void close()
{
    JavaScript.getCurrent().execute("window.swipesMap['" + componentId + "'].close(); console.log('swipe.close for " + componentId + "');");
}

private void _jsSetChartDrawType(ChartDrawType chartDrawType) {
    JavaScript.getCurrent()
            .execute("document.getElementById('" + LIVE_CHART_ID
                    + "').firstElementChild.contentDocument.getElementsByClassName('chart_drawtype')["
                    + chartDrawType.ordinal() + "].click();");
}

public static void setCookie(String key, String value, String path) {
    JavaScript.getCurrent().execute(String.format(
            "document.cookie = \"%s=%s; path=%s\";", key, value, path
    ));
}

private void rememberTempAccount(String username, String password) {
    String storeVal = username + "$" + EnDecryptHelper.encryptText(password);
    String setCookieVal = String.format("var now = new Date(); now.setTime(now.getTime() + 1 * 1800 * 1000); " +
            "document.cookie = \"%s=%s; expires=\" + now.toUTCString() + \"; path=/\";", TEMP_ACCOUNT_COOKIE, storeVal);
    JavaScript.getCurrent().execute(setCookieVal);
}

public void respondToExport(String callback, String response) {
    response = response.replaceAll("\\n", "");

    System.err.println("Executing :" +callback+".run('"+response+"')");
    JavaScript.eval(callback+".run('"+response+"')");
}

void call(final JavaScriptCallback<JsonArray> callback)
{

    final Stopwatch timer = Stopwatch.createStarted();
    final ScheduledFuture<?> future = createTimeoutHook();

    JavaScript.getCurrent().addFunction(hookName, new JavaScriptFunction()
    {

        private static final long serialVersionUID = 1L;
        boolean done = false;

        @Override
        public void call(JsonArray arguments)
        {
            try
            {
                if (timer.elapsed(TimeUnit.MILLISECONDS) > EXPECTED_RESPONSE_TIME_MS)
                {
                    logger.warn(jsToExecute + "\n\nResponded after {}ms", timer.elapsed(TimeUnit.MILLISECONDS));
                }
                logger.debug("Handling response for " + hookName);
                if (!done)
                {
                    done = true;
                    callback.callback(arguments);
                }
                else
                {
                    logger.warn("This appears to have been a duplicate callback, ignoring it!");
                }

            }
            catch (Exception e)
            {
                logger.error(e, e);
                logger.error(trace, trace);
            }
            finally
            {
                future.cancel(false);
                removeHooks(hookName, errorHookName);
            }
        }
    });

    final String wrappedJs = wrapJSInTryCatch(jsToExecute);
    setupErrorHook(future);
    JavaScript.getCurrent().execute(wrappedJs);

}

private static void execute(String script) {
    JavaScript.getCurrent().execute(script);
}

/**
 * <p>
 * Executes the given JavaScript code to manipulate the chart.
 * Use the JavaScript variable <code>chart</code> to access the chart.
 * </p>
 * <p>Example:</p>
 * <pre>  chart.manipulateChart("chart.addSeries({name: 'new', data: [1, 2]});");</pre>
 *
 * @param js JavaScript code to be executed
 */
public void manipulateChart(String js) {
    JavaScript.eval(
            "var chart = $('#" + getDomId() + "').highcharts();\n" +
                    js
    );
}

private static void addCallback(String jsCallbackName, JavaScriptFunction jsCallback) {
    JavaScript.getCurrent().addFunction(jsCallbackName, jsCallback);
}