org.openschedule.activities.AbstractOpenScheduleActivity.java Source code

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Here is the source code for org.openschedule.activities.AbstractOpenScheduleActivity.java

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/**
 *  This file is part of OpenSchedule for Android
 * 
 *  OpenSchedule for Android 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.
 *
 *  OpenSchedule for Android 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 OpenSchedule for Android.  If not, see <http://www.gnu.org/licenses/>.
 *   
 * @author Daniel Frey <dmfrey at gmail dot com>
 * 
 * This software can be found at <http://code.google.com/p/open-schedule-android/>
 *
 */
package org.openschedule.activities;

import org.openschedule.MainApplication;
import org.springframework.web.client.ResourceAccessException;

import android.app.Activity;
import android.app.ProgressDialog;
import android.view.Gravity;
import android.widget.Toast;

/**
 * @author Daniel Frey
 */
public abstract class AbstractOpenScheduleActivity extends Activity implements OpenScheduleActivity {

    protected static final String TAG = AbstractOpenScheduleActivity.class.getSimpleName();

    private ProgressDialog progressDialog;

    //***************************************
    // OpenScheduleActivity methods
    //***************************************

    /* (non-Javadoc)
     * @see android.content.ContextWrapper#getApplicationContext()
     */
    public MainApplication getApplicationContext() {
        return (MainApplication) super.getApplicationContext();
    }

    /* (non-Javadoc)
     * @see org.openschedule.OpenScheduleActivity#showProgressDialog()
     */
    public void showProgressDialog() {
        showProgressDialog("Loading. Please wait...");
    }

    /* (non-Javadoc)
     * @see org.openschedule.OpenScheduleActivity#showProgressDialog(java.lang.String)
     */
    public void showProgressDialog(String message) {
        if (progressDialog == null) {
            progressDialog = new ProgressDialog(this);
            progressDialog.setIndeterminate(true);
        }

        progressDialog.setMessage(message);
        progressDialog.show();
    }

    /* (non-Javadoc)
     * @see org.openschedule.OpenScheduleActivity#dismissProgressDialog()
     */
    public void dismissProgressDialog() {
        if (progressDialog != null) {
            progressDialog.dismiss();
        }
    }

    //***************************************
    // Protected methods
    //***************************************   
    protected void processException(Exception e) {
        if (null != e) {
            if (e instanceof ResourceAccessException) {
                displayNetworkError();
            }
        }
    }

    protected void displayNetworkError() {
        Toast toast = Toast.makeText(this,
                "A problem occurred with the network connection while attempting to communicate with Greenhouse.",
                Toast.LENGTH_LONG);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.show();
    }

}