Source Code : ProgressBar Sample (Smart GWT)

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ProgressBar Sample (Smart GWT)

  
/*
 * SmartGWT (GWT for SmartClient)
 * Copyright 2008 and beyond, Isomorphic Software, Inc.
 *
 * SmartGWT is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.  SmartGWT is also
 * available under typical commercial license terms - see
 * http://smartclient.com/license
 * This software 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.
 */
package com.smartgwt.sample.showcase.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.Label;
import com.smartgwt.client.widgets.Progressbar;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.layout.HLayout;
import com.smartgwt.client.widgets.layout.VLayout;

public class Showcase implements EntryPoint {

  public void onModuleLoad() {
    RootPanel.get().add(getViewPanel());
  }
  
  private int hBar1Value;
  private int hBar2Value;

  public Canvas getViewPanel() {
                  
      VLayout horizontalBars = new VLayout(4);
      horizontalBars.setWidth(175);
      
      final Label hBar1Label = new Label("Current File Progress");
      hBar1Label.setHeight(16);
      horizontalBars.addMember(hBar1Label);
      
      final Progressbar hBar1 = new Progressbar();
      hBar1.setVertical(false);
      hBar1.setHeight(14);   
      hBar1.setLength(175);
      horizontalBars.addMember(hBar1);
      
      final Label hBar2Label = new Label("Total Progress");
      hBar2Label.setHeight(16);
      horizontalBars.addMember(hBar2Label);

      final Progressbar hBar2 = new Progressbar();
      hBar2.setVertical(false);
      hBar2.setHeight(14);   
      hBar2.setLength(175);
      horizontalBars.addMember(hBar2);    

      
      final IButton buttonStart = new IButton("Start Demo");
      buttonStart.setAutoFit(true);
      buttonStart.addClickHandler(new ClickHandler(){
          public void onClick(ClickEvent event) {
              buttonStart.setDisabled(true);
              hBar1Value = 0;
              hBar2Value = 0;
              hBar1.setPercentDone(hBar1Value);
              hBar1Label.setContents("Current File Progress");
              hBar2.setPercentDone(hBar2Value);
              hBar2Label.setContents("Total Progress");

              new Timer() {
                  public void run() {
                      hBar1Value += 1 + (int) (10 * Math.random());
                      if (hBar1Value > 100) {
                          
                          hBar1Value = 0;
                          hBar2Value += 1 + (int) (5 * Math.random());
                          if (hBar2Value >= 100)
                              hBar1Value = hBar2Value = 100;
                          
                          hBar2.setPercentDone(hBar2Value);
                          hBar2Label.setContents("Total Progress: "+hBar2Value+"%");
                      }
                      hBar1.setPercentDone(hBar1Value);
                      hBar1Label.setContents("Current File Progress: "+hBar1Value+"%");
         
                      if(hBar2Value!=100)
                          schedule(5 + (int) (50 * Math.random()));
                      else
                          buttonStart.setDisabled(false);
                  }
              }.schedule(50);
          }
      });
      
      HLayout buttonCanvas = new HLayout();
      buttonCanvas.setMargin(10);
      buttonCanvas.addMember(buttonStart);

      horizontalBars.addMember(buttonCanvas);           
      
      Canvas canvas = new Canvas();
      canvas.addChild(horizontalBars);
      return canvas;
  }

}

   
    
  

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