Re: [platform-swt-dev] Problem while removing SWT Controls from SWT Tabl

[Carolyn MacLeod <Carolyn_MacLeod@xxxxxxxxxx>]

Hi, Srirekha.

You need to save the table editors somewhere
(probably saving them in the table item data is the easiest), and then
dispose of the table editors and the editor controls before removing the
table item.
Then you need the table's parent to
resize and redraw.
This snippet will hopefully show you
what you need to do:

package
snippets;

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

public
class
TableCellEditorComboTextButton {
  public
static
void
main(String[] args) {
    Display display = new
Display();
    final
Shell shell = new
Shell(display);
    shell.setLayout(new
GridLayout());
    final
Table table = new
Table(shell, SWT.BORDER
| SWT.MULTI
| SWT.CHECK);
    table.setLinesVisible(true);
    for
(int
i = 0; i < 3; i++) {
      TableColumn column
= new
TableColumn(table, SWT.NONE);
      column.setWidth(100);
    }
    for
(int
i = 0; i < 12; i++) {
      new
TableItem(table, SWT.NONE);
    }
    TableItem[] items = table.getItems();
    for
(int
i = 0; i < items.length;
i++) {
      TableItem item =
items[i];
      TableEditor editor
= new
TableEditor(table);
      CCombo combo = new
CCombo(table, SWT.NONE);
      combo.setText("Combo
" + i);
      combo.add("item
1");
      combo.add("item
2");
      editor.grabHorizontal
= true;
      editor.setEditor(combo,
item, 0);
      item.setData("ComboEditor",
editor);
      editor = new
TableEditor(table);
      Text text = new
Text(table, SWT.NONE);
      text.setText("Text
" + i);
      editor.grabHorizontal
= true;
      editor.setEditor(text,
item, 1);
      item.setData("TextEditor",
editor);
      editor = new
TableEditor(table);
      Button button = new
Button(table, SWT.CHECK);
      button.setText(""
+ i);
      button.pack();
      editor.minimumWidth
= button.getSize().x;
      editor.horizontalAlignment
= SWT.LEFT;
      editor.setEditor(button,
item, 2);
      item.setData("ButtonEditor",
editor);
    }
    Button button = new
Button(shell, SWT.PUSH);
    button.setText("Remove
checked items");
    button.addSelectionListener(new
SelectionAdapter() {
           
public
void
widgetSelected(SelectionEvent e) {
           
        TableItem[] items = table.getItems();
           
        for
(TableItem item : items) {
           
               
if(item.getChecked()){
  
           
               
        TableEditor editor = (TableEditor)
item.getData("ComboEditor");
           
               
        editor.getEditor().dispose();
           
               
        editor.dispose();
           
               
        editor = (TableEditor) item.getData("TextEditor");
           
               
        editor.getEditor().dispose();
           
               
        editor.dispose();
           
               
        editor = (TableEditor) item.getData("ButtonEditor");
           
               
        editor.getEditor().dispose();
           
               
        editor.dispose();
           
               
        table.remove(table.indexOf(item));
           
               
    shell.pack();
           
               
}
           
        }        


           
}
        });
    shell.pack();
    shell.open();
    while
(!shell.isDisposed()) {
      if
(!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

From:	"Srirekha P. K." <srirekha.pk@xxxxxxxxxxxxx>
To:	<platform-swt-dev@xxxxxxxxxxx>,
Date:	11/20/2012 12:45 AM
Subject:	[platform-swt-dev] Problem while removing SWT Controls from SWT        Table (Style : SWT.CHECK)
Sent by:	platform-swt-dev-bounces@xxxxxxxxxxx

---

Hi All,
 
I have created an SWT table (style SWT.CHECK)
following the SWT code snippet in link below:
 
http://www.java2s.com/Tutorial/Java/0280__SWT/TableCellEditorComboTextandButton.htm
<http://www.java2s.com/Tutorial/Java/0280__SWT/TableCellEditorComboTextandButton.htm>
 
 
As in snippet I have created three rows
in table, first row contains SWT Combo, the other two contains SWT text
boxes
 
My requirement is that I need to remove
the selected (checked)items from table. But this could not be achieved.
When I try to remove the selected item only the check box is being removed,
other items in that row (combo and text boxes) remains there.
 
The code used to remove the item is as
follows,
 
  TableItem[] items = table.getItems();
  for (TableItem item : items) {
   if(item.getChecked()){  
                     
 
       table.remove(table.indexOf(item));
   }
  }         
      
Is it because we are placing SWT
controls as table item?
 
1. Please suggest a way to remove the
table items with SWT Controls in it...
2. Also please let me know how I can access
individual controls (Combo box and values in it)
 
 
Regards,
Srirekha

 
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