1 /*** 2 * Redistribution and use in source and binary forms, with or without 3 * modification, are permitted provided that the following conditions are 4 * met : 5 * 6 * . Redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer. 8 * 9 * . Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * . The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $Id$ 29 */ 30 31 package palmed.ui; 32 33 import javax.microedition.lcdui.Display; 34 import javax.microedition.lcdui.Displayable; 35 import javax.microedition.lcdui.Gauge; 36 37 /*** 38 * This dialog displays a progress bar. 39 * 40 * @author Mathieu Champlon 41 * @version $Revision$ $Date$ 42 */ 43 public final class ProgressDialog extends Dialog implements IProgressIndicator 44 { 45 /*** 46 * The display. 47 */ 48 private final Display display_; 49 /*** 50 * The displayable to show when closing the dialog. 51 */ 52 private final Displayable next_; 53 /*** 54 * The progress bar. 55 */ 56 private final Gauge gauge_; 57 58 /*** 59 * Create a progress dialog. 60 * 61 * @param display the application display 62 * @param operation the name of the operation under process 63 * @param steps the maximum number of steps 64 * @param next the displayable to show when 'OK' is pressed 65 */ 66 public ProgressDialog( final Display display, final String operation, final int steps, final Displayable next ) 67 { 68 super( "Please wait" ); 69 if( display == null ) 70 throw new IllegalArgumentException( "parameter 'display' is null" ); 71 if( next == null ) 72 throw new IllegalArgumentException( "parameter 'next' is null" ); 73 gauge_ = new Gauge( operation, false, steps, 0 ); 74 display_ = display; 75 next_ = next; 76 } 77 78 /*** 79 * {@inheritDoc} 80 * <p> 81 * The dialog is dismissed if the maximum number of steps has been reached. 82 */ 83 public void step() 84 { 85 gauge_.setValue( Gauge.INCREMENTAL_UPDATING ); 86 if( gauge_.getValue() == gauge_.getMaxValue() ) 87 display_.setCurrent( next_ ); 88 } 89 }