Java - swt navegar por tabla

   
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swt navegar por tabla

Publicado por pep pons (3 intervenciones) el 02/11/2007 13:43:19
Estoy haciendo una aplicación que maneja tablas. La idea es conseguir navegar/editar por las tablas de la forma que lo hace Excell. Para navegar por las tablas he cogido como base el código ejemplo de l apagina de eclipse llamado Snippet96. Estoy intentado que el programa al pulsar la tecla de la flecha hacia abajo (arrow_down) seleccione el texto de la celda inferior. Lo único que he conseguido es que el cursor se mueva a la celda inferior pero no me permite seleccionar texto.
Supongo que si pudiera hacer volver el control del programa a la línea donde escribo ANOTACION1 cuando acabara del código de ARROW DOWN se solucionaría, pero no se como hacerlo.

Muchas gracias de antemano.

Aqui les escribo el código,
package geodesia;
/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/

/*
* TableCursor example snippet: navigate a table cells with arrow keys.
* Edit when user hits Return key. Exit edit mode by hitting Escape (cancels edit)
* or Return (applies edit to table).
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/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 Snippet96 {




public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new GridLayout());

// create a a table with 3 columns and fill with data
final Table table = new Table(shell, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);
table.setLayoutData(new GridData(GridData.FILL_BOTH));
TableColumn column1 = new TableColumn(table, SWT.NONE);
TableColumn column2 = new TableColumn(table, SWT.NONE);
TableColumn column3 = new TableColumn(table, SWT.NONE);
for (int i = 0; i < 100; i++) {
TableItem item = new TableItem(table, SWT.NONE);
item.setText(new String[] {"cell " + i + " 0", "cell " + i + " 1", "cell " + i + " 2" });
}
column1.pack();
column2.pack();
column3.pack();

// create a TableCursor to navigate around the table
final TableCursor cursor = new TableCursor(table, SWT.NONE);
// create an editor to edit the cell when the user hits "ENTER"
// while over a cell in the table
final ControlEditor editor = new ControlEditor(cursor);
editor.grabHorizontal = true;
editor.grabVertical = true;


cursor.addSelectionListener(new SelectionAdapter() {
// when the TableEditor is over a cell, select the corresponding row in
// the table

public void widgetSelected(SelectionEvent e)
{
/************************ANOTACIÓN************************/
table.setSelection(new TableItem[] { cursor.getRow()});

final Text text = new Text(cursor, SWT.NONE);
TableItem row = cursor.getRow();
int column = cursor.getColumn();
text.setText(row.getText(column));


text.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
// close the text editor and copy the data over
// when the user hits "ENTER"



if (e.character == SWT.CR) {
TableItem row = cursor.getRow();
int column = cursor.getColumn();
row.setText(column, text.getText());


text.dispose();


}
// close the text editor when the user hits "ESC"
if (e.character == SWT.ESC) {
text.dispose();
}
if(e.keyCode==SWT.ARROW_LEFT){
text.dispose();

int fila=table.getSelectionIndex();
int columna2=cursor.getColumn();
if (columna2>1){

cursor.setSelection(fila, columna2-1);}
}
if(e.keyCode==SWT.ARROW_RIGHT){

text.dispose();
int fila=table.getSelectionIndex();
int columna2=cursor.getColumn();
if (columna2<table.getColumnCount()){

cursor.setSelection(fila, columna2+1);
}

}
if(e.keyCode==SWT.ARROW_DOWN){

text.dispose();
int fila=table.getSelectionIndex();
int columna2=cursor.getColumn();
if (fila<table.getItemCount()){
cursor.setSelection(fila+1,columna2);

table.setSelection(new TableItem[] { cursor.getRow()});






}
}
if(e.keyCode==SWT.ARROW_UP){

text.dispose();
int fila=table.getSelectionIndex();
int columna2=cursor.getColumn();
if (fila>1){
System.out.println("aqui entro");

cursor.setSelection(fila-1, columna2);
table.setSelection(new TableItem[] { cursor.getRow()});

}
}



}});
// close the text editor when the user tabs away
text.addFocusListener(new FocusAdapter() {
public void focusLost(FocusEvent e) {
text.dispose();
}
});
editor.setEditor(text);
text.setFocus();

}

});
// Hide the TableCursor when the user hits the "CTRL" or "SHIFT" key.
// This alows the user to select multiple items in the table.
cursor.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.keyCode == SWT.CTRL
|| e.keyCode == SWT.SHIFT
|| (e.stateMask & SWT.CONTROL) != 0
|| (e.stateMask & SWT.SHIFT) != 0) {
cursor.setVisible(false);
}
}
});
// When the user double clicks in the TableCursor, pop up a text editor so that
// they can change the text of the cell
cursor.addMouseListener(new MouseAdapter() {
public void mouseDown(MouseEvent e) {
final Text text = new Text(cursor, SWT.NONE);
TableItem row = cursor.getRow();
int column = cursor.getColumn();
text.setText(row.getText(column));
text.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
// close the text editor and copy the data over
// when the user hits "ENTER"
if (e.character == SWT.CR) {
TableItem row = cursor.getRow();
int column = cursor.getColumn();
row.setText(column, text.getText());
text.dispose();
}
// close the text editor when the user hits "ESC"
if (e.character == SWT.ESC) {
text.dispose();
}
}
});
// close the text editor when the user clicks away
text.addFocusListener(new FocusAdapter() {
public void focusLost(FocusEvent e) {
text.dispose();
}
});
editor.setEditor(text);
text.setFocus();
}
});

// Show the TableCursor when the user releases the "SHIFT" or "CTRL" key.
// This signals the end of the multiple selection task.
table.addKeyListener(new KeyAdapter() {
public void keyReleased(KeyEvent e) {
if (e.keyCode == SWT.CONTROL && (e.stateMask & SWT.SHIFT) != 0)
return;
if (e.keyCode == SWT.SHIFT && (e.stateMask & SWT.CONTROL) != 0)
return;
if (e.keyCode != SWT.CONTROL
&& (e.stateMask & SWT.CONTROL) != 0)
return;
if (e.keyCode != SWT.SHIFT && (e.stateMask & SWT.SHIFT) != 0)
return;

TableItem[] selection = table.getSelection();
TableItem row = (selection.length == 0) ? table.getItem(table.getTopIndex()) : selection[0];
table.showItem(row);
cursor.setSelection(row, 0);
cursor.setVisible(true);
cursor.setFocus();
}
});

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