package org.activityinfo.ui.client.local.capability;
/*
* #%L
* ActivityInfo Server
* %%
* Copyright (C) 2009 - 2013 UNICEF
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
import com.google.gwt.user.client.rpc.AsyncCallback;
/**
* Provides information about the current browser's capability for offline mode.
* <p/>
* This default implementation is for fully supported browsers: webkit and
* opera.
*/
public abstract class LocalCapabilityProfile {
public boolean isOfflineModeSupported() {
return false;
}
/**
* @return installation instructions for offline mode for this specific
* browser, or null if no installation is required to use offline
* mode
*/
public String getInstallInstructions() {
return null;
}
/**
* Acquire all necessary permissions from the user to use offline mode.
*
* @param callback
* @throws UnsupportedOperationException if this browser does not support offline mode
*/
public void acquirePermission(AsyncCallback<Void> callback) {
callback.onFailure(new UnsupportedOperationException());
}
public boolean hasPermission() {
throw new UnsupportedOperationException("offline mode is not supported");
}
}