/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.mantle.client.usersettings;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.user.client.rpc.AsyncCallback;
import org.pentaho.gwt.widgets.client.dialogs.MessageDialogBox;
import org.pentaho.mantle.client.events.EventBusUtil;
import org.pentaho.mantle.client.events.UserSettingsLoadedEvent;
import org.pentaho.mantle.client.messages.Messages;
public class UserSettingsManager {
private JsArray<JsSetting> settings;
private static UserSettingsManager instance;
private UserSettingsManager() {
}
public static UserSettingsManager getInstance() {
if ( instance == null ) {
instance = new UserSettingsManager();
}
return instance;
}
public void getUserSettings( final boolean forceReload ) {
if ( forceReload || settings == null ) {
getUserSettings( null );
}
}
public void getUserSettings( final AsyncCallback<JsArray<JsSetting>> callback, final boolean forceReload ) {
if ( forceReload || settings == null ) {
getUserSettings( callback );
} else {
callback.onSuccess( settings );
}
}
private void getUserSettings( final AsyncCallback<JsArray<JsSetting>> callback ) {
final String url = GWT.getHostPageBaseURL() + "api/user-settings/list"; //$NON-NLS-1$
RequestBuilder builder = new RequestBuilder( RequestBuilder.GET, url );
builder.setHeader( "accept", "application/json" );
builder.setHeader( "If-Modified-Since", "01 Jan 1970 00:00:00 GMT" );
try {
builder.sendRequest( null, new RequestCallback() {
public void onError( Request request, Throwable exception ) {
MessageDialogBox dialog =
new MessageDialogBox(
Messages.getString( "error" ), Messages.getString( "couldNotGetUserSettings" ), true, false, true ); //$NON-NLS-1$ //$NON-NLS-2$
dialog.center();
}
public void onResponseReceived( Request request, Response response ) {
JsArray<JsSetting> jsSettings = null;
try {
jsSettings = JsSetting.parseSettingsJson( response.getText() );
} catch ( Throwable t ) {
// happens when there are no settings
}
//CHECKSTYLE IGNORE Indentation FOR NEXT 1 LINES
getInstance().settings = jsSettings;
if ( callback != null ) {
callback.onSuccess( settings );
}
EventBusUtil.EVENT_BUS.fireEvent( new UserSettingsLoadedEvent( settings ) );
}
} );
} catch ( RequestException e ) {
// showError(e);
}
}
}