Java/SWT JFace Eclipse/Text — различия между версиями

Текущая версия на 05:56, 1 июня 2010

Содержание

1 Add a select all menu item to the control
2 Demonstrates multiline comments
3 Demonstrates text fields
4 Detect CR in a text or combo control (default selection)
5 Detect when the user scrolls a text control
6 Draw internationalized styled text on a shell
7 Prompt for a password (set the echo character)
8 Remarks Text
9 Resize a text control (show about 10 characters)
10 Select all the text in the control
11 Set the selection (start, end)
12 Stop CR from going to the default button
13 SWT XML Editor: Modify DOM
14 Text and Label demo
15 Text Event
16 Text example snippet: set the selection (i-beam)
17 TextField Example
18 TextField Example 2
19 TextField Example 3
20 TextField Example 4
21 TextField Example 5
22 Text to uppercase
23 Turns e characters red using a LineStyleListener
24 Verify input (format for date)
25 Verify input (only allow digits)
26 Wrap Lines

Add a select all menu item to the control

/*
 * 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();
  }
}

Demonstrates multiline comments

//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]);
  }
}

Demonstrates text fields

//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();
  }
}

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

/*
 * 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();
  }
}

Detect when the user scrolls a text control

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();
  }
}

Draw internationalized styled text on a shell

/*
 * 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();
  }
}

Prompt for a password (set the echo character)

/*
 * 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();
  }
}

Remarks Text

/******************************************************************************
 * 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();
  }
}

Resize a text control (show about 10 characters)

/*
 * 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();
  }
}

Select all the text in the control

/*
 * 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();
  }
}

Set the selection (start, end)

/*
 * 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();
  }
}

Stop CR from going to the default button

/*
 * 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();
  }
}

SWT XML Editor: Modify DOM

/*
 * 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><p id="myid">Best Friends</p><p id="myid2">Cat and Dog</p></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();
  }
}

Text and Label demo

/******************************************************************************
 * 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();
  }
}

Text Event

/******************************************************************************
 * 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();
  }
}

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

/*
 * 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();
  }
}

TextField Example

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();
  }
}

TextField Example 2

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();
  }
}

TextField Example 3

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();
  }
}

TextField Example 4

/**
  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.
 * <p>
 * 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();
  }
}

TextField Example 5

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();
  }
}

Text to uppercase

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();
        }
      }
    });
  }
}

Turns e characters red using a LineStyleListener

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();
  }
}

Verify input (format for date)

/*
 * 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();
  }
}

Verify input (only allow digits)

/*
 * 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();
  }
}

Wrap Lines

/******************************************************************************
 * 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();
  }
}

Java/SWT JFace Eclipse/Text — различия между версиями

Текущая версия на 05:56, 1 июня 2010

Содержание

Add a select all menu item to the control

Demonstrates multiline comments

Demonstrates text fields

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

Detect when the user scrolls a text control

Draw internationalized styled text on a shell

Prompt for a password (set the echo character)

Remarks Text

Resize a text control (show about 10 characters)

Select all the text in the control

Set the selection (start, end)

Stop CR from going to the default button

SWT XML Editor: Modify DOM

Text and Label demo

Text Event

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

TextField Example

TextField Example 2

TextField Example 3

TextField Example 4

TextField Example 5

Text to uppercase

Turns e characters red using a LineStyleListener

Verify input (format for date)

Verify input (only allow digits)

Wrap Lines

Навигация

Персональные инструменты

Пространства имён

Варианты

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Версия 18:01, 31 мая 2010 (просмотреть исходный код) (обсуждение)	Текущая версия на 05:56, 1 июня 2010 (просмотреть исходный код) Admin (обсуждение \| вклад) м (1 версия)
(нет различий)