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Re: [platform-swt-dev] Table with multiple Listeners and Editors

Hi Andreas,

This kind of questions should be post to the swt newgroup (see 
http://www.eclipse.org/newsgroups/index.html).

You should check out the others SWT snippets 
(http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets), 
specially:
-place arbitrary controls in a table 
-edit a cell in a table (in place, fancy) 

The snippet you are testing hard code the EDITABLECOLUMN column to 1, I 
made a small modification to it to show how you can set the editable 
column using the event coordinates. Here is the code: 

package snippets;
/*
 * Copyright (c) 2000, 2003 IBM Corp.  All rights reserved.
 * This file is made available under the terms of the Common Public 
License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 */
 
/*
 * TableEditor example snippet: edit the text of a table item (in place)
 *
 * 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.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet88  {
 
public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());
        final Table table = new Table(shell, SWT.FULL_SELECTION | 
SWT.HIDE_SELECTION);
        TableColumn column1 = new TableColumn(table, SWT.NONE);
        TableColumn column2 = new TableColumn(table, SWT.NONE);
        for (int i = 0; i < 10; i++) {
                TableItem item = new TableItem(table, SWT.NONE);
                item.setText(new String[] {"item " + i, "edit this 
value"});
        }
        column1.pack();
        column2.pack();
 
        final TableEditor editor = new TableEditor(table);
        //The editor must have the same size as the cell and must
        //not be any smaller than 50 pixels.
        editor.horizontalAlignment = SWT.LEFT;
        editor.grabHorizontal = true;
        editor.minimumWidth = 50;
        // editing the second column
//      final int EDITABLECOLUMN = 1;
 
        table.addListener (SWT.MouseDown, new Listener () {
                public void handleEvent(Event e) {
                        // Clean up any previous editor control
                        Control oldEditor = editor.getEditor();
                        if (oldEditor != null) oldEditor.dispose();
 
                        Point pt = new Point(e.x, e.y);
                        // Identify the selected row
                        TableItem item = table.getItem(pt);
                        if (item == null) return;

                        // Identify the selected column
                        final int column = item.getBounds(0).contains(pt) 
? 0 : 1;
 
                        System.out.println(column);
                        // The control that will be the editor must be a 
child of the Table
                        Text newEditor = new Text(table, SWT.NONE);
                        newEditor.setText(item.getText(column));
                        newEditor.addModifyListener(new ModifyListener() {
                                public void modifyText(ModifyEvent e) {
                                        Text text = 
(Text)editor.getEditor();
                                        editor.getItem().setText(column, 
text.getText());
                                }
                        });
                        newEditor.selectAll();
                        newEditor.setFocus();
                        editor.setEditor(newEditor, item, column);
                }
        });
        shell.setSize(300, 300);
        shell.open();
 
        while (!shell.isDisposed()) {
                if (!display.readAndDispatch())
                        display.sleep();
        }
        display.dispose();
}

}

Felipe





"Andreas De Stefani" <anddestefani@xxxxxxx> 
Sent by: platform-swt-dev-admin@xxxxxxxxxxx
07/29/2004 07:53 AM
Please respond to
platform-swt-dev


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Subject
[platform-swt-dev] Table with multiple Listeners and Editors






Hello all,
 
i'm just using a simple table to display some data, i would like to make 
some fields of the table editable, for example in a Table with 5 columns, 
i would like to make the columns 3 and 4 editable.
 
I found a snipped which does the stuff for one column using a TableEditor
 
http://www.jlab.net/eclipse/doc/3.0/org/eclipse/swt/custom/TableEditor.html
 
i can't figure out, how i can do the same for multiple columns, does 
anybody know how this works?
 
I was also thinking about using a drop down list for one column, ie. it 
should allow to choose a value from a pre-defined set. This can be 
different for each row, for example:
 
i use a list of parameters which are shown in a table, each parameter 
possibly has a different type
the first row contains a boolean parameter, therefore: in cell number 2 
you can select from[true,false]
the second row contains a parameter which uses a value set: in cell number 
2 you can select from [1,2,3,5,6]
 
Does anybody know if this is possible with a simple swt table? any hints?
 
Many thanks
 
Andy

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