Java/SWT JFace Eclipse/Text

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Add a select all menu item to the control

   <source lang="java">

/*

* Text example snippet: add a select all menu item to the control
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.MenuItem; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet117 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new FillLayout());
   final Text t = new Text(shell, SWT.BORDER | SWT.MULTI);
   Menu bar = new Menu(shell, SWT.BAR);
   shell.setMenuBar(bar);
   MenuItem editItem = new MenuItem(bar, SWT.CASCADE);
   editItem.setText("Edit");
   Menu submenu = new Menu(shell, SWT.DROP_DOWN);
   editItem.setMenu(submenu);
   MenuItem item = new MenuItem(submenu, SWT.PUSH);
   item.addListener(SWT.Selection, new Listener() {
     public void handleEvent(Event e) {
       t.selectAll();
     }
   });
   item.setText("Select &All\tCtrl+A");
   item.setAccelerator(SWT.CTRL + "A");
   // Note that as long as your application has not overridden
   // the global accelerators for copy, paste, and cut
   // (CTRL+C or CTRL+INSERT, CTRL+V or SHIFT+INSERT, and CTRL+X or
   // SHIFT+DELETE)
   // these behaviours are already available by default.
   // If your application overrides these accelerators,
   // you will need to call Text.copy(), Text.paste() and Text.cut()
   // from the Selection callback for the accelerator when the
   // text widget has focus.
   shell.setSize(200, 200);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



Demonstrates multiline comments

   <source lang="java">

//Send questions, comments, bug reports, etc. to the authors: //Rob Warner (rwarner@interspatial.ru) //Robert Harris (rbrt_harris@yahoo.ru) import org.eclipse.swt.*; import org.eclipse.swt.custom.*; import org.eclipse.swt.layout.*; import org.eclipse.swt.widgets.*; import java.util.LinkedList; import java.util.ArrayList; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.widgets.Display; /**

* This program demonstrates multiline comments. It uses MultiLineCommentListener
* to do the syntax coloring
*/

public class MultiLineComment {

 /**
  * Runs the application
  */
 public void run() {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setText("Multiline Comments");
   createContents(shell);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       display.sleep();
     }
   }
   display.dispose();
 }
 /**
  * Creates the main window contents
  * 
  * @param shell the main window
  */
 private void createContents(Shell shell) {
   shell.setLayout(new FillLayout());
   final StyledText styledText = new StyledText(shell, SWT.BORDER | SWT.H_SCROLL
       | SWT.V_SCROLL);
   // Add the line style listener
   final MultiLineCommentListener lineStyleListener = new MultiLineCommentListener();
   styledText.addLineStyleListener(lineStyleListener);
   // Add the modification listener
   styledText.addExtendedModifyListener(new ExtendedModifyListener() {
     public void modifyText(ExtendedModifyEvent event) {
       // Recalculate the comments
       lineStyleListener.refreshMultilineComments(styledText.getText());
       // Redraw the text
       styledText.redraw();
     }
   });
 }
 /**
  * The application entry point
  * 
  * @param args the command line arguments
  */
 public static void main(String[] args) {
   new MultiLineComment().run();
 }

} //Send questions, comments, bug reports, etc. to the authors: //Rob Warner (rwarner@interspatial.ru) //Robert Harris (rbrt_harris@yahoo.ru) /**

* This class supports multiline comments. It turns comments green.
*/

class MultiLineCommentListener implements LineStyleListener {

 // Markers for multiline comments
 private static final String COMMENT_START = "/*";
 private static final String COMMENT_END = "*/";
 // Color for comments
 private static final Color COMMENT_COLOR = Display.getCurrent().getSystemColor(
     SWT.COLOR_DARK_GREEN);
 // Offsets for all multiline comments
 List commentOffsets;
 /**
  * MultilineCommentListener constructor
  */
 public MultiLineCommentListener() {
   commentOffsets = new LinkedList();
 }
 /**
  * Refreshes the offsets for all multiline comments in the parent StyledText.
  * The parent StyledText should call this whenever its text is modified. Note
  * that this code doesn"t ignore comment markers inside strings.
  * 
  * @param text the text from the StyledText
  */
 public void refreshMultilineComments(String text) {
   // Clear any stored offsets
   commentOffsets.clear();
   // Go through all the instances of COMMENT_START
   for (int pos = text.indexOf(COMMENT_START); pos > -1; pos = text.indexOf(
       COMMENT_START, pos)) {
     // offsets[0] holds the COMMENT_START offset
     // and COMMENT_END holds the ending offset
     int[] offsets = new int[2];
     offsets[0] = pos;
     // Find the corresponding end comment.
     pos = text.indexOf(COMMENT_END, pos);
     // If no corresponding end comment, use the end of the text
     offsets[1] = pos == -1 ? text.length() - 1 : pos + COMMENT_END.length() - 1;
     pos = offsets[1];
     // Add the offsets to the collection
     commentOffsets.add(offsets);
   }
 }
 /**
  * Called by StyledText to get the styles for a line
  * 
  * @param event the event
  */
 public void lineGetStyle(LineStyleEvent event) {
   // Create a collection to hold the StyleRanges
   List styles = new ArrayList();
   // Store the length for convenience
   int length = event.lineText.length();
   for (int i = 0, n = commentOffsets.size(); i < n; i++) {
     int[] offsets = (int[]) commentOffsets.get(i);
     // If starting offset is past current line--quit
     if (offsets[0] > event.lineOffset + length) break;
     // Check if we"re inside a multiline comment
     if (offsets[0] <= event.lineOffset + length
         && offsets[1] >= event.lineOffset) {
       // Calculate starting offset for StyleRange
       int start = Math.max(offsets[0], event.lineOffset);
       // Calculate length for style range
       int len = Math.min(offsets[1], event.lineOffset + length) - start + 1;
       // Add the style range
       styles.add(new StyleRange(start, len, COMMENT_COLOR, null));
     }
   }
   // Copy all the ranges into the event
   event.styles = (StyleRange[]) styles.toArray(new StyleRange[0]);
 }

}


      </source>
   
  
 
  



Demonstrates text fields

   <source lang="java">

//Send questions, comments, bug reports, etc. to the authors: //Rob Warner (rwarner@interspatial.ru) //Robert Harris (rbrt_harris@yahoo.ru) import org.eclipse.swt.SWT; import org.eclipse.swt.layout.*; import org.eclipse.swt.widgets.*; /**

* This class demonstrates text fields
*/

public class TextExample {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new GridLayout(1, false));
   
   
   // Create a single line text field
   new Text(shell, SWT.BORDER);
   
   // Create a right-aligned single line text field
   new Text(shell, SWT.RIGHT | SWT.BORDER);
   
   // Create a password text field
   new Text(shell, SWT.PASSWORD | SWT.BORDER);
   
   // Create a read-only text field
   new Text(shell, SWT.READ_ONLY | SWT.BORDER).setText("Read Only");
   
   // Create a multiple line text field
   Text t = new Text(shell, SWT.MULTI | SWT.BORDER | SWT.WRAP | SWT.V_SCROLL);
   t.setLayoutData(new GridData(GridData.FILL_BOTH));
   
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       display.sleep();
     }
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



Detect CR in a text or combo control (default selection)

   <source lang="java">

/*

* example snippet: detect CR in a text or combo control (default selelection)
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet24 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new RowLayout());
   Combo combo = new Combo(shell, SWT.NONE);
   combo.setItems(new String[] { "A-1", "B-1", "C-1" });
   Text text = new Text(shell, SWT.SINGLE | SWT.BORDER);
   text.setText("some text");
   combo.addListener(SWT.DefaultSelection, new Listener() {
     public void handleEvent(Event e) {
       System.out.println(e.widget + " - Default Selection");
     }
   });
   text.addListener(SWT.DefaultSelection, new Listener() {
     public void handleEvent(Event e) {
       System.out.println(e.widget + " - Default Selection");
     }
   });
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}

      </source>
   
  
 
  



Detect when the user scrolls a text control

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.ScrollBar; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; /*

* Detect when the user scrolls a text control
* 
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

public class Snippet191 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new FillLayout());
   final Text text = new Text(shell, SWT.BORDER | SWT.H_SCROLL
       | SWT.V_SCROLL);
   for (int i = 0; i < 32; i++) {
     text.append(i + "-This is a line of text in a widget-" + i + "\n");
   }
   text.setSelection(0);
   Listener listener = new Listener() {
     int lastIndex = text.getTopIndex();
     public void handleEvent(Event e) {
       int index = text.getTopIndex();
       if (index != lastIndex) {
         lastIndex = index;
         System.out.println("Scrolled, topIndex=" + index);
       }
     }
   };
   /* NOTE: Only detects scrolling by the user */
   text.addListener(SWT.MouseDown, listener);
   text.addListener(SWT.MouseMove, listener);
   text.addListener(SWT.MouseUp, listener);
   text.addListener(SWT.KeyDown, listener);
   text.addListener(SWT.KeyUp, listener);
   text.addListener(SWT.Resize, listener);
   ScrollBar hBar = text.getHorizontalBar();
   if (hBar != null) {
     hBar.addListener(SWT.Selection, listener);
   }
   ScrollBar vBar = text.getVerticalBar();
   if (vBar != null) {
     vBar.addListener(SWT.Selection, listener);
   }
   shell.pack();
   Point size = shell.ruputeSize(SWT.DEFAULT, SWT.DEFAULT);
   shell.setSize(size.x - 32, size.y / 2);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



Draw internationalized styled text on a shell

   <source lang="java">

/*

* TextLayout example snippet: draw internationalized styled text on a shell
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.TextLayout; import org.eclipse.swt.graphics.TextStyle; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; public class Snippet145 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   Font font1 = new Font(display, "Tahoma", 14, SWT.BOLD);
   Font font2 = new Font(display, "MS Mincho", 20, SWT.ITALIC);
   Font font3 = new Font(display, "Arabic Transparent", 18, SWT.NORMAL);
   Color blue = display.getSystemColor(SWT.COLOR_BLUE);
   Color green = display.getSystemColor(SWT.COLOR_GREEN);
   Color yellow = display.getSystemColor(SWT.COLOR_YELLOW);
   Color gray = display.getSystemColor(SWT.COLOR_GRAY);
   final TextLayout layout = new TextLayout(display);
   TextStyle style1 = new TextStyle(font1, yellow, blue);
   TextStyle style2 = new TextStyle(font2, green, null);
   TextStyle style3 = new TextStyle(font3, blue, gray);
   layout
       .setText("English \u65E5\u672C\u8A9E  \u0627\u0644\u0639\u0631\u0628\u064A\u0651\u0629");
   layout.setStyle(style1, 0, 6);
   layout.setStyle(style2, 8, 10);
   layout.setStyle(style3, 13, 21);
   shell.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
   shell.addListener(SWT.Paint, new Listener() {
     public void handleEvent(Event event) {
       layout.draw(event.gc, 10, 10);
     }
   });
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   font1.dispose();
   font2.dispose();
   font3.dispose();
   layout.dispose();
   display.dispose();
 }

}

      </source>
   
  
 
  



Prompt for a password (set the echo character)

   <source lang="java">

/*

* Text example snippet: prompt for a password (set the echo character)
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet121 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new FillLayout());
   Text text = new Text(shell, SWT.SINGLE | SWT.BORDER);
   text.setEchoChar("*");
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



Remarks Text

   <source lang="java">

/******************************************************************************

* All Right Reserved. 
* Copyright (c) 1998, 2004 Jackwind Li Guojie
* 
* Created on Feb 17, 2004 9:58:26 PM by JACK
* $Id$
* 
*****************************************************************************/

import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.VerifyEvent; import org.eclipse.swt.events.VerifyListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class RemarksText {

 Display display = new Display();
 Shell shell = new Shell(display);
 
 Text text;
 public RemarksText() {
   shell.setLayout(new GridLayout(1, false));
   
   (new Label(shell, SWT.NULL)).setText("Remarks:");
   
   text = new Text(shell, SWT.MULTI | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
   text.setText("123456789");
   
   text.setLayoutData(new GridData(GridData.FILL_BOTH));
   
   System.out.println("getText: " + text.getText(1, 6));
   
   char[] chars = text.getLineDelimiter().toCharArray();
   for (int i = 0; i < chars.length; i++) {
     System.out.println("Line delimiter #" + i + ": " + Integer.toHexString(chars[i]) );
   }
   
   text.getOrientation();
   
   System.out.println("Number of chars: " + text.getCharCount());
   System.out.println("Tabs: " + text.getTabs());
   
   text.addVerifyListener(new VerifyListener() {
     public void verifyText(VerifyEvent e) {
       if(e.end == e.start) {
         if( e.character == " " && (e.stateMask & SWT.CTRL) != 0 ) {
           if(text.getText(e.end-1, e.end-1).equals("V")) {
             e.text = "erifyListener";
           }else{
             e.doit = false;
           }
         }
       }
     }
   });
   
   text.addModifyListener(new ModifyListener() {
     public void modifyText(ModifyEvent e) {
       System.out.println("New character count: " + text.getCharCount());  
     }
   });
   
   // text.append("a");
   
   text.setSelection(1, 4);
   
   System.out.println("getSelection:\t" + text.getSelection());
   System.out.println("getSelectionCount:\t" + text.getSelectionCount());
   System.out.println("getSelectionText:\t" + text.getSelectionText());
   //text.insert("ABC");
   
   init();
   // shell.pack();
   shell.setSize(300, 150);
   shell.open();
   //textUser.forceFocus();
   // Set up the event loop.
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       // If no more entries in event queue
       display.sleep();
     }
   }
   display.dispose();
 }
 private void init() {
 }
 public static void main(String[] args) {
   new RemarksText();
 }

}


      </source>
   
  
 
  



Resize a text control (show about 10 characters)

   <source lang="java">

/*

* Text example snippet: resize a text control (show about 10 characters)
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.FontMetrics; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet55 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   Text text = new Text(shell, SWT.BORDER);
   int columns = 10;
   GC gc = new GC(text);
   FontMetrics fm = gc.getFontMetrics();
   int width = columns * fm.getAverageCharWidth();
   int height = fm.getHeight();
   gc.dispose();
   text.setSize(text.ruputeSize(width, height));
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



Select all the text in the control

   <source lang="java">

/*

* Text example snippet: select all the text in the control
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet22 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   Text text = new Text(shell, 0);
   text.setText("ASDF");
   text.setSize(64, 32);
   text.selectAll();
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



Set the selection (start, end)

   <source lang="java">

/*

* Text example snippet: set the selection (start, end)
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet12 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   Text text = new Text(shell, SWT.BORDER | SWT.V_SCROLL);
   text.setBounds(10, 10, 100, 100);
   for (int i = 0; i < 16; i++) {
     text.append("Line " + i + "\n");
   }
   shell.open();
   text.setSelection(30, 38);
   System.out.println(text.getCaretLocation());
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



Stop CR from going to the default button

   <source lang="java">

/*

* Text example snippet: stop CR from going to the default button
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.TraverseEvent; import org.eclipse.swt.events.TraverseListener; 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.Shell; import org.eclipse.swt.widgets.Text; public class Snippet116 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new GridLayout());
   Text text = new Text(shell, SWT.SINGLE | SWT.BORDER);
   text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
   text.setText("Here is some text");
   text.addSelectionListener(new SelectionAdapter() {
     public void widgetDefaultSelected(SelectionEvent e) {
       System.out
           .println("Text default selected (overrides default button)");
     }
   });
   text.addTraverseListener(new TraverseListener() {
     public void keyTraversed(TraverseEvent e) {
       if (e.detail == SWT.TRAVERSE_RETURN) {
         e.doit = false;
         e.detail = SWT.TRAVERSE_NONE;
       }
     }
   });
   Button button = new Button(shell, SWT.PUSH);
   button.setText("Ok");
   button.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent e) {
       System.out.println("Button selected");
     }
   });
   shell.setDefaultButton(button);
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



SWT XML Editor: Modify DOM

   <source lang="java">

/*

* Browser example snippet: modify DOM (executing javascript)
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.browser.Browser; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.ruposite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class ModifyDOM {

 public static void main(String[] args) {
final String html = "<html><title>Snippet</title><body>

Best Friends

Cat and Dog

</body></html>";
   Display display = new Display();
   final Shell shell = new Shell(display);
   shell.setLayout(new FillLayout());
   final Browser browser = new Browser(shell, SWT.BORDER);
   Composite comp = new Composite(shell, SWT.NONE);
   comp.setLayout(new FillLayout(SWT.VERTICAL));
   final Text text = new Text(comp, SWT.MULTI);
   text
       .setText("var newNode = document.createElement("P"); \r\n"
           + "var text = document.createTextNode("At least when I am around");\r\n"
           + "newNode.appendChild(text);\r\n"
           + "document.getElementById("myid").appendChild(newNode);\r\n"
           + "\r\n" + "document.bgColor="yellow";");
   final Button button = new Button(comp, SWT.PUSH);
   button.setText("Execute Script");
   button.addListener(SWT.Selection, new Listener() {
     public void handleEvent(Event event) {
       boolean result = browser.execute(text.getText());
       if (!result) {
         /*
          * Script may fail or may not be supported on certain
          * platforms.
          */
         System.out.println("Script was not executed.");
       }
     }
   });
   browser.setText(html);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}

      </source>
   
  
 
  



Text and Label demo

   <source lang="java">

/******************************************************************************

* Copyright (c) 1998, 2004 Jackwind Li Guojie
* All right reserved. 
* 
* Created on Jan 29, 2004 3:09:11 PM by JACK
* $Id$
* 
* visit: http://www.asprise.ru/swt
*****************************************************************************/

import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Sample {

 Display display = new Display();
 Shell shell = new Shell(display);
 public Sample() {
   shell.setText("Book Entry Demo");
   GridLayout gridLayout = new GridLayout(4, false);
   gridLayout.verticalSpacing = 8;
   shell.setLayout(gridLayout);
   // Title
   Label label = new Label(shell, SWT.NULL);
   label.setText("Title: ");
   Text title = new Text(shell, SWT.SINGLE | SWT.BORDER);
   GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
   gridData.horizontalSpan = 3;
   title.setLayoutData(gridData);
   // Author(s)
   label = new Label(shell, SWT.NULL);
   label.setText("Author(s): ");
   Text authors = new Text(shell, SWT.SINGLE | SWT.BORDER);
   gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
   gridData.horizontalSpan = 3;
   authors.setLayoutData(gridData);
   // Cover
   label = new Label(shell, SWT.NULL);
   label.setText("Cover: ");
   gridData = new GridData();
   gridData.verticalSpan = 3;
   label.setLayoutData(gridData);
   CLabel cover = new CLabel(shell, SWT.NULL);
   gridData = new GridData(GridData.FILL_HORIZONTAL);
   gridData.horizontalSpan = 1;
   gridData.verticalSpan = 3;
   gridData.heightHint = 100;
   gridData.widthHint = 100;
   cover.setLayoutData(gridData);
   // Details.
   label = new Label(shell, SWT.NULL);
   label.setText("Pages");
   Text pages = new Text(shell, SWT.SINGLE | SWT.BORDER);
   pages.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
   label = new Label(shell, SWT.NULL);
   label.setText("Publisher");
   Text pubisher = new Text(shell, SWT.SINGLE | SWT.BORDER);
   pubisher.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
   label = new Label(shell, SWT.NULL);
   label.setText("Rating");
   Combo rating = new Combo(shell, SWT.READ_ONLY);
   rating.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
   rating.add("5");
   rating.add("4");
   rating.add("3");
   rating.add("2");
   rating.add("1");
   // Abstract.
   label = new Label(shell, SWT.NULL);
   label.setText("Abstract:");
   Text bookAbstract =
     new Text(
       shell,
       SWT.WRAP
         | SWT.MULTI
         | SWT.BORDER
         | SWT.H_SCROLL
         | SWT.V_SCROLL);
   gridData =
     new GridData(
       GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL);
   gridData.horizontalSpan = 3;
   gridData.grabExcessVerticalSpace = true;
   bookAbstract.setLayoutData(gridData);
   // Button.
   Button enter = new Button(shell, SWT.PUSH);
   enter.setText("Enter");
   gridData = new GridData();
   gridData.horizontalSpan = 4;
   gridData.horizontalAlignment = GridData.END;
   enter.setLayoutData(gridData);
   // Fill information.
   title.setText("Professional Java Interfaces with SWT/JFace");
   authors.setText("Jack Li Guojie");
   pages.setText("500pp");
   pubisher.setText("John Wiley & Sons");
   cover.setBackground(new Image(display, "jexp.gif"));
   bookAbstract.setText(
     "This book provides a comprehensive guide for \n"
       + "you to create Java user interfaces with SWT/JFace. ");
   shell.pack();
   shell.open();
   // Set up the event loop.
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       // If no more entries in event queue
       display.sleep();
     }
   }
   display.dispose();
 }
 private void init() {
 }
 public static void main(String[] args) {
   new Sample();
 }

}


      </source>
   
  
 
  



Text Event

   <source lang="java">

/******************************************************************************

* Copyright (c) 1998, 2004 Jackwind Li Guojie
* All right reserved. 
* 
* Created on Jan 16, 2004 1:23:25 AM by JACK
* $Id$
* 
* visit: http://www.asprise.ru/swt
*****************************************************************************/

import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class TemperatureConverter {

 Display display = new Display();
 Shell shell = new Shell(display);
 Label fahrenheitLabel;
 Label celsiusLabel;
 Label messageLabel;
 Text fahrenheitValue;
 Text celsiusValue;
 public TemperatureConverter() {
   shell.setText("SWT Temperature Converter");
   shell.setLayout(new GridLayout(4, false));
   fahrenheitLabel = new Label(shell, SWT.NULL);
   fahrenheitLabel.setText("Fahrenheit: ");
   fahrenheitValue = new Text(shell, SWT.SINGLE | SWT.BORDER);
   celsiusLabel = new Label(shell, SWT.NULL);
   celsiusLabel.setText("Celsius: ");
   celsiusValue = new Text(shell, SWT.SINGLE | SWT.BORDER);
   
   messageLabel = new Label(shell, SWT.BORDER);
   GridData gridData = new GridData(GridData.FILL_BOTH);
   gridData.horizontalSpan = 4;
   messageLabel.setLayoutData(gridData);
   ModifyListener listener = new ModifyListener() {
     public void modifyText(ModifyEvent e) {
       valueChanged((Text) e.widget);
     }
   };
   fahrenheitValue.addModifyListener(listener);
   celsiusValue.addModifyListener(listener);
   shell.pack();
   shell.open();
   // Set up the event loop.
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       // If no more entries in event queue
       display.sleep();
     }
   }
   display.dispose();
 }
 /**
  * Performs conversion when one of the text fields changes.
  * 
  * @param text
  *            the event source
  */
 public void valueChanged(Text text) {
   if (!text.isFocusControl())
     return;
   if (text == fahrenheitValue) {
     try {
       double fValue = Double.parseDouble(text.getText());
       double cValue = (fValue - 32) / 1.8;
       celsiusValue.setText(Double.toString(cValue));
       System.out.println("F -> C: " + cValue);
       messageLabel.setText("Conversion performed successfully.");
     } catch (NumberFormatException e) {
       celsiusValue.setText("");
       messageLabel.setText("Invalid number format: " + text.getText());
     }
   } else {
     try {
       double cValue = Double.parseDouble(text.getText());
       double fValue = cValue * 1.8 + 32;
       fahrenheitValue.setText(Double.toString(fValue));
       System.out.println("C -> F: " + fValue);
       messageLabel.setText("Conversion performed successfully.");
     } catch (NumberFormatException e) {
       fahrenheitValue.setText("");
       messageLabel.setText("Invalid number format: " + text.getText());
     }
   }
 }
 public static void main(String[] args) {
   new TemperatureConverter();
 }

}


      </source>
   
  
 
  



Text example snippet: set the selection (i-beam)

   <source lang="java">


/*

* Text example snippet: set the selection (i-beam)
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet11 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   Text text = new Text(shell, SWT.BORDER | SWT.V_SCROLL);
   text.setBounds(10, 10, 100, 100);
   for (int i = 0; i < 16; i++) {
     text.append("Line " + i + "\n");
   }
   shell.open();
   text.setSelection(30);
   System.out.println(text.getCaretLocation());
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}

      </source>
   
  
 
  



TextField Example

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class TextFieldExample {

 Display d;
 Shell s;
 TextFieldExample() {
   d = new Display();
   s = new Shell(d);
   s.setSize(250, 250);
   final Text text1 = new Text(s, SWT.SINGLE);
   text1.setBounds(10, 10, 100, 20);
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }
 public static void main(String[] arg) {
   new TextFieldExample();
 }

}


      </source>
   
  
 
  



TextField Example 2

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class TextFieldExample2 {

 Display d;
 Shell s;
 TextFieldExample2() {
   d = new Display();
   s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Text Field Example");
   final Text text1 = new Text(s, SWT.SINGLE | SWT.BORDER);
   text1.setBounds(100, 50, 100, 20);
   final Text text2 = new Text(s, SWT.SINGLE | SWT.BORDER);
   text2.setBounds(100, 75, 100, 20);
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }
 public static void main(String[] arg) {
   new TextFieldExample2();
 }

}


      </source>
   
  
 
  



TextField Example 3

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class TextFieldExample3 {

 Display d;
 Shell s;
 TextFieldExample3() {
   d = new Display();
   s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Text Field Example");
   Text text1 = new Text(s, SWT.MULTI | SWT.BORDER);
   text1.setBounds(0, 0, 250, 250);
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }
 public static void main(String[] arg) {
   new TextFieldExample3();
 }

}

      </source>
   
  
 
  



TextField Example 4

   <source lang="java">

/**

 The following code is from Michael Schmidt(MichaelMSchmidt (at) msn.ru).
 
 The code is published under BSD license.
 
 Thanks for the input from Michael Schmidt.
  • /

package TextTest; import org.eclipse.swt.SWT; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.FocusListener; import org.eclipse.swt.events.MouseAdapter; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; /**

* This is a revision of TextFieldExample4.  Two modifications have been made.
* First, a Text value (ABC) has been added to the text2 field, simply for 
* demonstration purposes.  Second, a mouseDown() listener has been added to 
* text2.  Note that in the original sample, text2 would not highlight (perform
* the selectAll() operation) when it gained focus with the mouse.  This is 
* because clicking on the field invokes gainFocus() followed by mouseDown(), 
* and mouseDown() does a clearSelection(), negating the selectAll() done in 
* the gainFocus() method.  You can test this by simply commenting out the 
* addMouseListener code.
*

* Other modifications are possible. The Text field may be designated * read-only to prevent editing and erasing of the field when the tab key is * used to move through the widgets. Logic can also be used to do a selectAll() * when you first click on the field and then place the I-beam cursor if the * mouse is clicked again. * * @author Michael Schmidt * */ public class TextFieldExample4Revised { Display d; Shell s; TextFieldExample4Revised() { d = new Display(); s = new Shell(d); s.setSize(250, 250); s.setText("A Text Field Example"); Text text1 = new Text(s, SWT.WRAP | SWT.BORDER); text1.setBounds(100, 50, 100, 20); text1.setTextLimit(5); text1.setText("12345"); Text text2 = new Text(s, SWT.SINGLE | SWT.BORDER); text2.setBounds(100, 75, 100, 20); text2.setTextLimit(30); text2.setText("ABC"); // add a focus listener FocusListener focusListener = new FocusListener() { public void focusGained(FocusEvent e) { Text t = (Text) e.widget; t.selectAll(); } public void focusLost(FocusEvent e) { Text t = (Text) e.widget; if (t.getSelectionCount() > 0) { t.clearSelection(); } } }; text1.addFocusListener(focusListener); text2.addFocusListener(focusListener); // Added code - comment out to test without the mouseListener text2.addMouseListener(new MouseAdapter() { public void mouseDown(final MouseEvent e) { Text t = (Text) e.widget; t.selectAll(); } }); // End of added code s.open(); while (!s.isDisposed()) { if (!d.readAndDispatch()) d.sleep(); } d.dispose(); } public static void main(String[] arg) { new TextFieldExample4Revised(); } } //////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////// import org.eclipse.swt.SWT; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.FocusListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class TextFieldExample4 { Display d; Shell s; TextFieldExample4() { d = new Display(); s = new Shell(d); s.setSize(250, 250); s.setText("A Text Field Example"); Text text1 = new Text(s, SWT.WRAP | SWT.BORDER); text1.setBounds(100, 50, 100, 20); text1.setTextLimit(5); text1.setText("12345"); Text text2 = new Text(s, SWT.SINGLE | SWT.BORDER); text2.setBounds(100, 75, 100, 20); text2.setTextLimit(30); // add a focus listener FocusListener focusListener = new FocusListener() { public void focusGained(FocusEvent e) { Text t = (Text) e.widget; t.selectAll(); } public void focusLost(FocusEvent e) { Text t = (Text) e.widget; if (t.getSelectionCount() > 0) { t.clearSelection(); } } }; text1.addFocusListener(focusListener); text2.addFocusListener(focusListener); s.open(); while (!s.isDisposed()) { if (!d.readAndDispatch()) d.sleep(); } d.dispose(); } public static void main(String[] arg) { new TextFieldExample4(); } } </source>

TextField Example 5

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.FocusListener; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class TextFieldExample5 {

 Display d;
 Shell s;
 TextFieldExample5() {
   d = new Display();
   s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Text Field Example");
   final Text text1 = new Text(s, SWT.WRAP | SWT.BORDER);
   text1.setBounds(100, 50, 100, 20);
   text1.setTextLimit(5);
   text1.setEchoChar("*");
   final Text text2 = new Text(s, SWT.SINGLE | SWT.BORDER);
   text2.setBounds(100, 75, 100, 20);
   text2.setTextLimit(30);
   // add a focus listener
   FocusListener focusListener = new FocusListener() {
     public void focusGained(FocusEvent e) {
     }
     public void focusLost(FocusEvent e) {
       Text t = (Text) e.widget;
       if (t == text2) {
         if (t.getText().length() < 3) {
           t.setFocus();
         }
       }
     }
   };
   text1.addFocusListener(focusListener);
   text2.addFocusListener(focusListener);
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }
 public static void main(String[] arg) {
   new TextFieldExample5();
 }

}

      </source>
   
  
 
  



Text to uppercase

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.VerifyEvent; import org.eclipse.swt.events.VerifyListener; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.ruposite; import org.eclipse.swt.widgets.Text; public class Ch5Capitalizer extends Composite {

 public Ch5Capitalizer(Composite parent) {
   super(parent, SWT.NONE);
   buildControls();
 }
 private void buildControls() {
   this.setLayout(new FillLayout());
   Text text = new Text(this, SWT.MULTI | SWT.V_SCROLL);
   text.addVerifyListener(new VerifyListener() {
     public void verifyText(VerifyEvent e) {
       if (e.text.startsWith("1")) {
         e.doit = false;
       } else {
         e.text = e.text.toUpperCase();
       }
     }
   });
 }

}

      </source>
   
  
 
  



Turns e characters red using a LineStyleListener

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.custom.*; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.layout.*; import org.eclipse.swt.widgets.*; /**

* This class turns "e" characters red using a LineStyleListener
*/

public class RedEListener {

 // Color for the StyleRanges
 private Color red;
 /**
  * Runs the application
  */
 public void run() {
   Display display = new Display();
   Shell shell = new Shell(display);
   // Get color for style ranges
   red = display.getSystemColor(SWT.COLOR_RED);
   createContents(shell);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       display.sleep();
     }
   }
   display.dispose();
 }
 /**
  * Creates the main window contents
  * 
  * @param shell the main window
  */
 private void createContents(Shell shell) {
   shell.setLayout(new FillLayout());
   // Create the StyledText
   final StyledText styledText = new StyledText(shell, SWT.BORDER | SWT.H_SCROLL
       | SWT.V_SCROLL);
   // Add the syntax coloring handler
   styledText.addLineStyleListener(new LineStyleListener() {
     public void lineGetStyle(LineStyleEvent event) {
       // Create a collection to hold the StyleRanges
       java.util.List styles = new java.util.ArrayList();
       // Iterate through the text
       for (int i = 0, n = event.lineText.length(); i < n; i++) {
         // Check for "e"
         if (event.lineText.charAt(i) == "e") {
           // Found an "e"; combine all subsequent e"s into the same StyleRange
           int start = i;
           for (; i < n && event.lineText.charAt(i) == "e"; i++);
           // Create the StyleRange and add it to the collection
           styles.add(new StyleRange(event.lineOffset + start, i - start, red,
               null));
         }
       }
       // Set the styles for the line
       event.styles = (StyleRange[]) styles.toArray(new StyleRange[0]);
     }
   });
 }
 /**
  * The application entry point
  * 
  * @param args the command line arguments
  */
 public static void main(String[] args) {
   new RedEListener().run();
 }

}

      </source>
   
  
 
  



Verify input (format for date)

   <source lang="java">

/*

* Text example snippet: verify input (format for date)
* 
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import java.util.Calendar; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet179 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new GridLayout());
   final Text text = new Text(shell, SWT.BORDER);
   text.setText("YYYY/MM/DD");
   ;
   final Calendar calendar = Calendar.getInstance();
   text.addListener(SWT.Verify, new Listener() {
     boolean ignore;
     public void handleEvent(Event e) {
       if (ignore)
         return;
       e.doit = false;
       StringBuffer buffer = new StringBuffer(e.text);
       char[] chars = new char[buffer.length()];
       buffer.getChars(0, chars.length, chars, 0);
       if (e.character == "\b") {
         for (int i = e.start; i < e.end; i++) {
           switch (i) {
           case 0: /* [Y]YYY */
           case 1: /* Y[Y]YY */
           case 2: /* YY[Y]Y */
           case 3: /* YYY[Y] */{
             buffer.append("Y");
             break;
           }
           case 5: /* [M]M */
           case 6: /* M[M] */{
             buffer.append("M");
             break;
           }
           case 8: /* [D]D */
           case 9: /* D[D] */{
             buffer.append("D");
             break;
           }
           case 4: /* YYYY[/]MM */
           case 7: /* MM[/]DD */{
             buffer.append("/");
             break;
           }
           default:
             return;
           }
         }
         text.setSelection(e.start, e.start + buffer.length());
         ignore = true;
         text.insert(buffer.toString());
         ignore = false;
         text.setSelection(e.start, e.start);
         return;
       }
       int start = e.start;
       if (start > 9)
         return;
       int index = 0;
       for (int i = 0; i < chars.length; i++) {
         if (start + index == 4 || start + index == 7) {
           if (chars[i] == "/") {
             index++;
             continue;
           }
           buffer.insert(index++, "/");
         }
         if (chars[i] < "0" || "9" < chars[i])
           return;
         if (start + index == 5 && "1" < chars[i])
           return; /* [M]M */
         if (start + index == 8 && "3" < chars[i])
           return; /* [D]D */
         index++;
       }
       String newText = buffer.toString();
       int length = newText.length();
       StringBuffer date = new StringBuffer(text.getText());
       date.replace(e.start, e.start + length, newText);
       calendar.set(Calendar.YEAR, 1901);
       calendar.set(Calendar.MONTH, Calendar.JANUARY);
       calendar.set(Calendar.DATE, 1);
       String yyyy = date.substring(0, 4);
       if (yyyy.indexOf("Y") == -1) {
         int year = Integer.parseInt(yyyy);
         calendar.set(Calendar.YEAR, year);
       }
       String mm = date.substring(5, 7);
       if (mm.indexOf("M") == -1) {
         int month = Integer.parseInt(mm) - 1;
         int maxMonth = calendar.getActualMaximum(Calendar.MONTH);
         if (0 > month || month > maxMonth)
           return;
         calendar.set(Calendar.MONTH, month);
       }
       String dd = date.substring(8, 10);
       if (dd.indexOf("D") == -1) {
         int day = Integer.parseInt(dd);
         int maxDay = calendar.getActualMaximum(Calendar.DATE);
         if (1 > day || day > maxDay)
           return;
         calendar.set(Calendar.DATE, day);
       } else {
         if (calendar.get(Calendar.MONTH) == Calendar.FEBRUARY) {
           char firstChar = date.charAt(8);
           if (firstChar != "D" && "2" < firstChar)
             return;
         }
       }
       text.setSelection(e.start, e.start + length);
       ignore = true;
       text.insert(newText);
       ignore = false;
     }
   });
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}


      </source>
   
  
 
  



Verify input (only allow digits)

   <source lang="java">


/*

* Text example snippet: verify input (only allow digits)
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class Snippet19 {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   Text text = new Text(shell, SWT.BORDER | SWT.V_SCROLL);
   text.setBounds(10, 10, 200, 200);
   text.addListener(SWT.Verify, new Listener() {
     public void handleEvent(Event e) {
       String string = e.text;
       char[] chars = new char[string.length()];
       string.getChars(0, chars.length, chars, 0);
       for (int i = 0; i < chars.length; i++) {
         if (!("0" <= chars[i] && chars[i] <= "9")) {
           e.doit = false;
           return;
         }
       }
     }
   });
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}

      </source>
   
  
 
  



Wrap Lines

   <source lang="java">

/******************************************************************************

* All Right Reserved. 
* Copyright (c) 1998, 2004 Jackwind Li Guojie
* 
* Created on Feb 17, 2004 8:02:20 PM by JACK
* $Id$
* 
*****************************************************************************/

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class WrapLines {

 Display display = new Display();
 Shell shell = new Shell(display);
 
 Text text1;
 Text text2;
 
 String line = "abcdefghijklmnopqrstuvwxyz0123456789";
 
 private void init() {
   text1 = new Text(shell, SWT.BORDER | SWT.MULTI);
   //text.setTextLimit(12);
   text1.setText(line);
   
   text2 = new Text(shell, SWT.BORDER | SWT.WRAP);
   text2.setText(line);
   
 }
 public WrapLines() {
   
   shell.setLayout(new GridLayout(2, true));
   
   (new Label(shell, SWT.NULL)).setText("SWT.BORDER |\nSWT.MUTLI");
   (new Label(shell, SWT.NULL)).setText("SWT.BORDER |\nSWT.MUTLI |\nSWT.WRAP");
   
   init();
   
   GridData gridData = new GridData(GridData.FILL_BOTH);
   text1.setLayoutData(gridData);
   
   gridData = new GridData(GridData.FILL_BOTH);
   text2.setLayoutData(gridData);
   shell.pack();
   shell.open();
   //textUser.forceFocus();
   // Set up the event loop.
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       // If no more entries in event queue
       display.sleep();
     }
   }
   display.dispose();
 }
 public static void main(String[] args) {
   new WrapLines();
 }

}


      </source>