/**
* Copyright 2010 JBoss Inc
*
* 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 org.drools.guvnor.client;
import com.google.gwt.animation.client.Animation;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Style.Visibility;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.RootLayoutPanel;
import com.google.gwt.user.client.ui.RootPanel;
import org.drools.guvnor.client.common.GenericCallback;
import org.drools.guvnor.client.configurations.ConfigurationsLoader;
import org.drools.guvnor.client.explorer.ClientFactory;
import org.drools.guvnor.client.messages.Constants;
import org.drools.guvnor.client.resources.GuvnorResources;
import org.drools.guvnor.client.resources.OperatorsResource;
import org.drools.guvnor.client.resources.RoundedCornersResource;
import org.drools.guvnor.client.rpc.RepositoryServiceFactory;
import org.drools.guvnor.client.rpc.UserSecurityContext;
import org.drools.guvnor.client.ruleeditor.StandaloneEditorManager;
/**
* This is the main launching/entry point for the JBRMS web console. It
* essentially sets the initial layout.
* <p/>
* If you hadn't noticed, this is using GWT from google. Refer to GWT docs if
* GWT is new to you (it is quite a different way of building web apps).
*/
public class JBRMSEntryPoint
implements
EntryPoint {
private Constants constants = GWT.create( Constants.class );
private AppController appController;
public void onModuleLoad() {
loadStyles();
hideLoadingPopup();
checkLogIn();
}
private void loadStyles() {
GuvnorResources.INSTANCE.headerCss().ensureInjected();
GuvnorResources.INSTANCE.titledTextCellCss().ensureInjected();
RoundedCornersResource.INSTANCE.roundCornersCss().ensureInjected();
OperatorsResource.INSTANCE.operatorsCss().ensureInjected();
}
/**
* Check if user is logged in, if not, then show prompt. If it is, then we
* show the app, in all its glory !
*/
private void checkLogIn() {
RepositoryServiceFactory.getSecurityService().getCurrentUser( new GenericCallback<UserSecurityContext>() {
public void onSuccess( UserSecurityContext userSecurityContext ) {
String userName = userSecurityContext.getUserName();
if ( userName != null ) {
showMain( userName );
} else {
logIn();
}
}
} );
}
private void logIn() {
final LoginWidget loginWidget = new LoginWidget();
loginWidget.setLoggedInEvent( new Command() {
public void execute() {
showMain( loginWidget.getUserName() );
}
} );
loginWidget.show();
}
private void showMain( final String userName ) {
Window.setStatus( constants.LoadingUserPermissions() );
loadConfigurations( userName );
}
private void loadConfigurations( final String userName ) {
ConfigurationsLoader.loadPreferences( new Command() {
public void execute() {
loadUserCapabilities( userName );
}
} );
}
private void loadUserCapabilities( final String userName ) {
ConfigurationsLoader.loadUserCapabilities( new Command() {
public void execute() {
setUpMain( userName );
}
} );
}
private void setUpMain( String userName ) {
Window.setStatus( " " );
createMain();
appController.setUserName( userName );
}
/**
* Creates the main view of Guvnor. The path used to invoke guvnor is used
* to identify the view to show: If the path contains
* "StandaloneEditor.html" then the StandaloneGuidedEditorManager is used to
* render the view. If not, the default view is shown.
*/
private void createMain() {
ClientFactory clientFactory = GWT.create( ClientFactory.class );
appController = new AppController( clientFactory );
if ( Window.Location.getPath().contains( "StandaloneEditor.html" ) ) {
RootLayoutPanel.get().add( new StandaloneEditorManager( clientFactory ).getBaseLayout() );
} else {
RootLayoutPanel.get().add( appController.getMainPanel() );
}
}
//Fade out the "Loading application" pop-up
private void hideLoadingPopup() {
final Element e = RootPanel.get( "loading" ).getElement();
Animation r = new Animation() {
@Override
protected void onUpdate( double progress ) {
e.getStyle().setOpacity( 1.0 - progress );
}
@Override
protected void onComplete() {
e.getStyle().setVisibility( Visibility.HIDDEN );
}
};
r.run( 500 );
}
}