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Vaadin is a web application framework for Rich Internet Applications (RIA).
Vaadin enables easy development and maintenance of fast and
secure rich web
applications with a stunning look and feel and a wide browser support.
It features a server-side architecture with the majority of the logic
running
on the server. Ajax technology is used at the browser-side to ensure a
rich
and interactive user experience.
/*
* Copyright 2000-2016 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.client;
import java.util.logging.Logger;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.http.client.UrlBuilder;
import com.google.gwt.jsonp.client.JsonpRequestBuilder;
import com.google.gwt.storage.client.Storage;
import com.google.gwt.user.client.Window.Location;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.vaadin.client.ui.VNotification;
import com.vaadin.client.ui.VNotification.EventListener;
import com.vaadin.client.ui.VNotification.HideEvent;
/**
* Class that enables SuperDevMode using a ?superdevmode parameter in the url.
*
* @author Vaadin Ltd
* @since 7.0
*
*/
public class SuperDevMode {
private static final int COMPILE_TIMEOUT_IN_SECONDS = 60;
protected static final String SKIP_RECOMPILE = "VaadinSuperDevMode_skip_recompile";
public static class RecompileResult extends JavaScriptObject {
protected RecompileResult() {
}
public final native boolean ok()
/*-{
return this.status == "ok";
}-*/;
}
private static void recompileWidgetsetAndStartInDevMode(
final String serverUrl) {
getLogger().info("Recompiling widgetset using
" + serverUrl
+ "
and then reloading in super dev mode");
VNotification n = new VNotification();
n.show("Recompiling widgetset, please wait",
VNotification.CENTERED, VNotification.STYLE_SYSTEM);
JsonpRequestBuilder b = new JsonpRequestBuilder();
b.setCallbackParam("_callback");
b.setTimeout(COMPILE_TIMEOUT_IN_SECONDS * 1000);
b.requestObject(
serverUrl + "recompile/" + GWT.getModuleName() + "?"
+ getRecompileParameters(GWT.getModuleName()),
new AsyncCallback() {
@Override
public void onSuccess(RecompileResult result) {
getLogger().fine("JSONP compile call successful");
if (!result.ok()) {
getLogger().fine("* result: " + result);
failed();
return;
}
setSession(getSuperDevModeHookKey(),
getSuperDevWidgetSetUrl(GWT.getModuleName(),
serverUrl));
setSession(SKIP_RECOMPILE, "1");
getLogger().fine("* result: OK. Reloading");
Location.reload();
}
@Override
public void onFailure(Throwable caught) {
getLogger().severe("JSONP compile call failed");
// Don't log exception as they are shown as
// notifications
getLogger().severe(caught.getClass().getSimpleName()
+ ": " + caught.getMessage());
failed();
}
private void failed() {
VNotification n = new VNotification();
n.addEventListener(new EventListener() {
@Override
public void notificationHidden(HideEvent event) {
recompileWidgetsetAndStartInDevMode(serverUrl);
}
});
n.show("Recompilation failed.
"
+ "Make sure CodeServer is running, "
+ "check its output and click to retry",
VNotification.CENTERED,
VNotification.STYLE_SYSTEM);
}
});
}
protected static String getSuperDevWidgetSetUrl(String widgetsetName,
String serverUrl) {
return serverUrl + GWT.getModuleName() + "/" + GWT.getModuleName()
+ ".nocache.js";
}
private native static String getRecompileParameters(String moduleName)
/*-{
var prop_map = $wnd.__gwt_activeModules[moduleName].bindings();
// convert map to URL parameter string
var props = [];
for (var key in prop_map) {
props.push(encodeURIComponent(key) + '=' + encodeURIComponent(prop_map[key]))
}
return props.join('&') + '&';
}-*/;
private static void setSession(String key, String value) {
Storage.getSessionStorageIfSupported().setItem(key, value);
}
private static String getSession(String key) {
return Storage.getSessionStorageIfSupported().getItem(key);
}
private static void removeSession(String key) {
Storage.getSessionStorageIfSupported().removeItem(key);
}
protected static void disableDevModeAndReload() {
removeSession(getSuperDevModeHookKey());
redirect(false);
}
protected static void redirect(boolean devModeOn) {
UrlBuilder createUrlBuilder = Location.createUrlBuilder();
if (!devModeOn) {
createUrlBuilder.removeParameter("superdevmode");
} else {
createUrlBuilder.setParameter("superdevmode", "");
}
Location.assign(createUrlBuilder.buildString());
}
private static String getSuperDevModeHookKey() {
String widgetsetName = GWT.getModuleName();
final String superDevModeKey = "__gwtDevModeHook:" + widgetsetName;
return superDevModeKey;
}
private static boolean hasSession(String key) {
return getSession(key) != null;
}
/**
* The URL of the code server. The default URL (http://localhost:9876/) will
* be used if this is empty or null.
*
* @param serverUrl
* The url of the code server or null to use the default
* @return true if recompile started, false if we are running in
* SuperDevMode
*/
protected static boolean recompileIfNeeded(String serverUrl) {
if (serverUrl == null || "".equals(serverUrl)) {
serverUrl = "http://localhost:9876/";
} else {
if (serverUrl.contains(":")) {
serverUrl = "http://" + serverUrl + "/";
} else {
serverUrl = "http://" + serverUrl + ":9876/";
}
}
if (hasSession(SKIP_RECOMPILE)) {
getLogger().info("Running in SuperDevMode");
// When we get here, we are running in super dev mode
// Remove the flag so next reload will recompile
removeSession(SKIP_RECOMPILE);
// Remove the gwt flag so we will not end up in dev mode if we
// remove the url parameter manually
removeSession(getSuperDevModeHookKey());
return false;
}
recompileWidgetsetAndStartInDevMode(serverUrl);
return true;
}
protected static boolean isSuperDevModeEnabledInModule() {
String moduleName = GWT.getModuleName();
return isSuperDevModeEnabledInModule(moduleName);
}
protected native static boolean isSuperDevModeEnabledInModule(
String moduleName)
/*-{
if (!$wnd.__gwt_activeModules)
return false;
var mod = $wnd.__gwt_activeModules[moduleName];
if (!mod)
return false;
if (mod.superdevmode) {
// Running in super dev mode already, it is supported
return true;
}
return !!mod.canRedirect;
}-*/;
/**
* Enables SuperDevMode if the url contains the "superdevmode" parameter.
*
* The caller should not continue initialization of the application if this
* method returns true. The application will be restarted once compilation
* is done and then this method will return false.
*
*
* @return true if a recompile operation has started and the page will be
* reloaded once it is done, false if no recompilation will be done.
*/
public static boolean enableBasedOnParameter() {
String superDevModeParameter = Location.getParameter("superdevmode");
if (superDevModeParameter != null) {
// Need to check the recompile flag also because if we are running
// in super dev mode, as a result of the recompile, the enabled
// check will fail...
if (!isSuperDevModeEnabledInModule()) {
showError(
"SuperDevMode is disabled for this module/widgetset.
"
+ "Ensure that your module definition (.gwt.xml) does not contain
"
+ "<set-configuration-property name="devModeRedirectEnabled" value="false" />
");
return false;
}
return SuperDevMode.recompileIfNeeded(superDevModeParameter);
}
return false;
}
private static void showError(String message) {
VNotification n = new VNotification();
n.show(message, VNotification.CENTERED_TOP, VNotification.STYLE_SYSTEM);
}
private static Logger getLogger() {
return Logger.getLogger(SuperDevMode.class.getName());
}
}