Demonstrates TableEditor : Table « SWT JFace Eclipse « Java






Demonstrates TableEditor

Demonstrates TableEditor

//Send questions, comments, bug reports, etc. to the authors:

//Rob Warner (rwarner@interspatial.com)
//Robert Harris (rbrt_harris@yahoo.com)

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

/**
 * This class demonstrates TableEditor.
 */
public class TextTableEditor {
  // Number of rows and columns
  private static final int NUM = 5;

  // Colors for each row
  private Color[] colors = new Color[NUM];

  // Options for each dropdown
  private String[] options = { "Option 1", "Option 2", "Option 3"};

  /**
   * Runs the application
   */
  public void run() {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Text Table Editor");
    createContents(shell);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    // Dispose any created colors
    for (int i = 0; i < NUM; i++) {
      if (colors[i] != null) colors[i].dispose();
    }
    display.dispose();
  }

  /**
   * Creates the main window's contents
   * 
   * @param shell the main window
   */
  private void createContents(final Shell shell) {
    shell.setLayout(new FillLayout());

    // Create the table
    final Table table = new Table(shell, SWT.SINGLE | SWT.FULL_SELECTION
        | SWT.HIDE_SELECTION);
    table.setHeaderVisible(true);
    table.setLinesVisible(true);

    // Create five columns
    for (int i = 0; i < NUM; i++) {
      TableColumn column = new TableColumn(table, SWT.CENTER);
      column.setText("Column " + (i + 1));
      column.pack();
    }

    // Create five table editors for color
    TableEditor[] colorEditors = new TableEditor[NUM];

    // Create five buttons for changing color
    Button[] colorButtons = new Button[NUM];

    // Create five rows and the editors for those rows. The first column has the
    // color change buttons. The second column has dropdowns. The final three
    // have text fields.
    for (int i = 0; i < NUM; i++) {
      // Create the row
      final TableItem item = new TableItem(table, SWT.NONE);

      // Create the editor and button
      colorEditors[i] = new TableEditor(table);
      colorButtons[i] = new Button(table, SWT.PUSH);

      // Set attributes of the button
      colorButtons[i].setText("Color...");
      colorButtons[i].computeSize(SWT.DEFAULT, table.getItemHeight());

      // Set attributes of the editor
      colorEditors[i].grabHorizontal = true;
      colorEditors[i].minimumHeight = colorButtons[i].getSize().y;
      colorEditors[i].minimumWidth = colorButtons[i].getSize().x;

      // Set the editor for the first column in the row
      colorEditors[i].setEditor(colorButtons[i], item, 0);

      // Create a handler for the button
      final int index = i;
      colorButtons[i].addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
          ColorDialog dialog = new ColorDialog(shell);
          if (colors[index] != null) dialog.setRGB(colors[index].getRGB());
          RGB rgb = dialog.open();
          if (rgb != null) {
            if (colors[index] != null) colors[index].dispose();
            colors[index] = new Color(shell.getDisplay(), rgb);
            item.setForeground(colors[index]);
          }
        }
      });
    }

    // Create an editor object to use for text editing
    final TableEditor editor = new TableEditor(table);
    editor.horizontalAlignment = SWT.LEFT;
    editor.grabHorizontal = true;

    // Use a mouse listener, not a selection listener, since we're interested
    // in the selected column as well as row
    table.addMouseListener(new MouseAdapter() {
      public void mouseDown(MouseEvent event) {
        // Dispose any existing editor
        Control old = editor.getEditor();
        if (old != null) old.dispose();

        // Determine where the mouse was clicked
        Point pt = new Point(event.x, event.y);

        // Determine which row was selected
        final TableItem item = table.getItem(pt);
        if (item != null) {
          // Determine which column was selected
          int column = -1;
          for (int i = 0, n = table.getColumnCount(); i < n; i++) {
            Rectangle rect = item.getBounds(i);
            if (rect.contains(pt)) {
              // This is the selected column
              column = i;
              break;
            }
          }

          // Column 2 holds dropdowns
          if (column == 1) {
            // Create the dropdown and add data to it
            final CCombo combo = new CCombo(table, SWT.READ_ONLY);
            for (int i = 0, n = options.length; i < n; i++) {
              combo.add(options[i]);
            }

            // Select the previously selected item from the cell
            combo.select(combo.indexOf(item.getText(column)));

            // Compute the width for the editor
            // Also, compute the column width, so that the dropdown fits
            editor.minimumWidth = combo.computeSize(SWT.DEFAULT, SWT.DEFAULT).x;
            table.getColumn(column).setWidth(editor.minimumWidth);

            // Set the focus on the dropdown and set into the editor
            combo.setFocus();
            editor.setEditor(combo, item, column);

            // Add a listener to set the selected item back into the cell
            final int col = column;
            combo.addSelectionListener(new SelectionAdapter() {
              public void widgetSelected(SelectionEvent event) {
                item.setText(col, combo.getText());

                // They selected an item; end the editing session
                combo.dispose();
              }
            });
          } else if (column > 1) {
            // Create the Text object for our editor
            final Text text = new Text(table, SWT.NONE);
            text.setForeground(item.getForeground());

            // Transfer any text from the cell to the Text control,
            // set the color to match this row, select the text,
            // and set focus to the control
            text.setText(item.getText(column));
            text.setForeground(item.getForeground());
            text.selectAll();
            text.setFocus();

            // Recalculate the minimum width for the editor
            editor.minimumWidth = text.getBounds().width;

            // Set the control into the editor
            editor.setEditor(text, item, column);

            // Add a handler to transfer the text back to the cell
            // any time it's modified
            final int col = column;
            text.addModifyListener(new ModifyListener() {
              public void modifyText(ModifyEvent event) {
                // Set the text of the editor's control back into the cell
                item.setText(col, text.getText());
              }
            });
          }
        }
      }
    });
  }

  /**
   * The application entry point
   * 
   * @param args the command line arguments
   */
  public static void main(String[] args) {
    new TextTableEditor().run();
  }
}


           
       








Related examples in the same category

1.How to order 1000 elements in a swt column table with O(n log(n)) complexity! using Comparator and Array.sort() implemented in a TableColumn Listener FactoryHow to order 1000 elements in a swt column table with O(n log(n)) complexity! using Comparator and Array.sort() implemented in a TableColumn Listener Factory
2.Print KTable (SWT Table)Example Print KTable (SWT Table)Example
3.The source of a custom table class for Java SWT applicationsThe source of a custom table class for Java SWT applications
4.SWT Table Editor
5.Simple File Browser in SWT TableSimple File Browser in SWT Table
6.Bug Tracker JFaceBug Tracker JFace
7.Bug TrackerBug Tracker
8.File Browser DemoFile Browser Demo
9.TableEditor exampleTableEditor example
10.File Browser SampleFile Browser Sample
11.File Browser JFace
12.Bug ReportBug Report
13.Displays ASCII CodesDisplays ASCII Codes
14.Demonstrates the SWT.VIRTUAL styleDemonstrates the SWT.VIRTUAL style
15.Displays a tableDisplays a table
16.A table of baseball players and allows sortingA table of baseball players and allows sorting
17.Demonstrates TableCursorDemonstrates TableCursor
18.Demonstrates TableTreeDemonstrates TableTree
19.Shows the extensions on the system and their associated programsShows the extensions on the system and their associated programs
20.Table Example 3Table Example 3
21.Table Example 2Table Example 2
22.Table ExampleTable Example
23.Demonstrates TableViewersDemonstrates TableViewers
24.Demonstrates CheckboxTableViewerDemonstrates CheckboxTableViewer
25.Demonstrates CellEditorsDemonstrates CellEditors
26.SWT Table Simple DemoSWT Table Simple Demo
27.Create fake tooltips for items in a SWT tableCreate fake tooltips for items in a SWT table
28.Place a progress bar in a SWT tablePlace a progress bar in a SWT table
29.edit a cell in a SWT table (in place, fancy)edit a cell in a SWT table (in place, fancy)
30.edit the text of a SWT table item (in place)edit the text of a SWT table item (in place)
31.navigate a SWT table cells with arrow keysnavigate a SWT table cells with arrow keys
32.Update SWT table item textUpdate SWT table item text
33.Sort a SWT table by columnSort a SWT table by column
34.Select an index (select and scroll) in a SWT tableSelect an index (select and scroll) in a SWT table
35.Scroll a SWT table (set the top index)Scroll a SWT table (set the top index)
36.Resize columns as SWT table resizesResize columns as SWT table resizes
37.Remove selected items in a SWT tableRemove selected items in a SWT table
38.Print selected items in a SWT tablePrint selected items in a SWT table
39.Place arbitrary controls in a SWT tablePlace arbitrary controls in a SWT table
40.Reorder columns and reorder columns programmaticallyReorder columns and reorder columns programmatically
41.Insert a SWT table column (at an index)Insert a SWT table column (at an index)
42.Insert a SWT table item (at an index)Insert a SWT table item (at an index)
43.Find a SWT table cell from mouse down (works for any table style)Find a SWT table cell from mouse down (works for any table style)
44.Find a table cell from mouse down (SWT.FULL_SELECTION)Find a table cell from mouse down (SWT.FULL_SELECTION)
45.Detect a selection or check event in a table (SWT.CHECK)Detect a selection or check event in a table (SWT.CHECK)
46.Create a SWT table with 1,000,000 itemsCreate a SWT table with 1,000,000 items
47.Create a SWT table (columns, headers, lines)Create a SWT table (columns, headers, lines)
48.Create a SWT table (no columns, no headers)Create a SWT table (no columns, no headers)
49.Color cells and rows in SWT tableColor cells and rows in SWT table
50.Create a virtual SWT table and add 1000 entries to it every 500 msCreate a virtual SWT table and add 1000 entries to it every 500 ms
51.Dropped data type depends on target item in tableDropped data type depends on target item in table
52.Create a table (lazy)Create a table (lazy)