/*
* @(#)TestSWTThreadTaskConsole.java 1.0 09/03/26
*/
package cn.edu.tsinghua.cs.keg.andy.swt;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.events.VerifyListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
/**
* 前台GUI界面，用于显示进度条以及文本内容
* @author Andy Wang
* @since JDK5.0
* @version 1.0 09/03/26
*
*/
public class TestSWTThreadTaskUI {
private ProgressBar progressBar;
private Text consoleText;
private Text numText;
private Button startBtn;
private Button stopBtn;
private TestSWTThreadTaskConsole console = new TestSWTThreadTaskConsole(this);
public TestSWTThreadTaskUI(){}
/**
* 创建GUI界面
*/
public void createTaskUI(){
Display display = Display.getDefault();
Shell shell = new Shell(display,SWT.MIN|SWT.MAX|SWT.CLOSE);
shell.setText("测试多线程使用的前台界面");
Point point = new Point(300,300);
shell.setSize(point);
shell.setLayout(new GridLayout());
//任务栏所在组
{
Group group = new Group(shell,SWT.NONE);
group.setLayout(new GridLayout(4,false));
group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
new Label(group,SWT.NONE).setText("任务数:");
numText = new Text(group,SWT.BORDER);
numText.setText("100");
numText.setLayoutData(new GridData(100,-1));
numText.addVerifyListener(new VerifyListener(){
public void verifyText(VerifyEvent e) {
e.doit = "0123456789".indexOf(e.text) >= 0;
// if(!e.doit){
// MessageDialog.openInformation(null, "提示信息", "请输入数字！！");
// }
}
});
startBtn = new Button(group,SWT.PUSH);
startBtn.setText("执行");
startBtn.addSelectionListener(new SelectionAdapter(){
public void widgetSelected(SelectionEvent e){
setButtonIsEnabled(false);
String num = numText.getText();
final int taskCount = new Integer(num).intValue();
progressBar.setMaximum(taskCount-1);
consoleText.insert("后台程序开始启动..../n");
new Thread(){
public void run(){
// 调用后台程序，并将参数传给后台
console.startConsole(taskCount);
}
}.start();
consoleText.insert("后台程序运行结束！/n");
}
});
stopBtn = new Button(group,SWT.PUSH);
stopBtn.setText("停止");
stopBtn.setEnabled(false);
stopBtn.addSelectionListener(new SelectionAdapter(){
public void widgetSelected(SelectionEvent e){
setButtonIsEnabled(true);
console.stopConsole();
}
});
}
// 进度条
{
progressBar = new ProgressBar(shell,SWT.BORDER);
// pro.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
progressBar.setLayoutData(new GridData(286,-1));
}
//输出信息的文本框
{
consoleText = new Text(shell,SWT.BORDER|SWT.WRAP|SWT.READ_ONLY|SWT.MULTI|SWT.V_SCROLL);
final GridData gri = new GridData();
// final GridData gri = new GridData(GridData.FILL_HORIZONTAL);
gri.heightHint = 180;
gri.widthHint = 263;
consoleText.setLayoutData(gri);
}
shell.open();
while(!shell.isDisposed()){
if(!display.readAndDispatch()){
display.sleep();
}
}
display.dispose();
}
/**
* get console text
* @return
*/
public Text getConsoleText(){
return consoleText;
}
/**
* get a progress bar
* @return
*/
public ProgressBar getProgressBar(){
return progressBar;
}
public void setButtonIsEnabled(boolean flag){
startBtn.setEnabled(flag);
stopBtn.setEnabled(!flag);
}
/**
* start main class
* @param args
*/
public static void main(String[] args) {
try{
TestSWTThreadTaskUI tui = new TestSWTThreadTaskUI();
tui.createTaskUI();
}catch(Exception e){}
}
}
/*
* @(#)TestSWTThreadTaskConsole.java 1.0 09/03/27
*/
package cn.edu.tsinghua.cs.keg.andy.swt;
import org.eclipse.swt.widgets.Display;
/**
* 后台控制类，用于对TestSWTThreadTaskUI类的控制
* @author Andy Wang
* @since JDK5.0
* @version 1.0 09/03/27
*
*/
public class TestSWTThreadTaskConsole {
private TestSWTThreadTaskUI ui ;
private boolean stopFlag = false;
public TestSWTThreadTaskConsole(){}
public TestSWTThreadTaskConsole(TestSWTThreadTaskUI gui){
this.ui = gui;
}
/**
* start console
* @param numText task numbers
*/
public void startConsole(int numText){
stopFlag = false;
this.insertConsoleText("后台线程开始启动.../n");
for(int i = 0;i < numText;i++){
if(stopFlag) break;
try{
Thread.sleep(100);
}catch(Exception e){
e.printStackTrace();
}
this.insertConsoleText("第[ "+ i +" ]个任务处理完毕！/n");
this.moveProgressBar(i);
}
this.insertConsoleText("后台线程运行结束！！！！");
this.setButtonIsEnabled(true);
}
/**
* text insert
* @param content a string
*/
public void insertConsoleText(final String content){
Display.getDefault().syncExec(new Runnable(){
public void run(){
ui.getConsoleText().insert(content);
}
});
}
/**
* move progress bar
* @param progress
*/
public void moveProgressBar(final int progress){
Display.getDefault().syncExec(new Runnable(){
public void run(){
ui.getProgressBar().setSelection(progress);
}
});
}
/**
* set button state
* @param flag
*/
private final void setButtonIsEnabled(final boolean flag){
Display.getDefault().syncExec(new Runnable(){
public void run(){
ui.setButtonIsEnabled(flag);
}
});
}
/**
* stop console threads
*/
public void stopConsole(){
stopFlag = true;
}
}