@Override
protected void setSelectionToWidget(List in, boolean reveal) {
if (reveal) {
super.setSelectionToWidget(in, reveal);
} else {
if (in == null || in.size() == 0) { // clear selection
list.deselectAll();
} else {
int n = in.size();
int[] ixs = new int[n];
int count = 0;
for (int i = 0; i < n; ++i) {
Object el = in.get(i);
int ix = getElementIndex(el);
if (ix >= 0) {
ixs[count++] = ix;
}
}
if (count < n) {
System.arraycopy(ixs, 0, ixs = new int[count], 0, count);
}
list.deselectAll();
list.select(ixs);
}
}
}
/**
* Deselects the items at the given zero-relative indices in the receiver. If the item at the
* given zero-relative index in the receiver is selected, it is deselected. If the item at the
* index was not selected, it remains deselected. The range of the indices is inclusive. Indices
* that are out of range are ignored.
*
* @param start the start index of the items to deselect
* @param end the end index of the items to deselect
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*
* @since 1.3
*/
public void deselect(int start, int end) {
checkWidget();
if (start == 0 && end == model.getItemCount() - 1) {
deselectAll();
} else {
int actualStart = Math.max(0, start);
for (int i = actualStart; i <= end; i++) {
removeFromSelection(i);
}
}
}
/**
* Sets the contents of the receiver's text field to the given string.
*
* <p>Note: The text field in a <code>Combo</code> is typically only capable of displaying a
* single line of text. Thus, setting the text to a string containing line breaks or other special
* characters will probably cause it to display incorrectly.
*
* @param string the new text
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setText(String string) {
checkWidget();
if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
int index = list.indexOf(string);
if (index == -1) {
list.deselectAll();
text.setText(string);
return;
}
text.setText(string);
text.selectAll();
list.setSelection(index);
list.showSelection();
}
private void browsePressed() {
nameList.deselectAll();
FileDialog subDlg = new FileDialog(getShell(), SWT.OPEN);
selectedPath = subDlg.open();
if (selectedPath != null) {
try {
selectedText = getFileContents(this.selectedPath);
testTextField.setText(this.selectedText.getText());
testTextField.redraw();
} catch (Exception e) {
messageLabel.setText(e.getMessage());
messageLabel.redraw();
}
}
}
/**
* Selects the item at the given zero-relative index in the receiver's list. If the item at the
* index was already selected, it remains selected. Indices that are out of range are ignored.
*
* @param index the index of the item to select
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void select(int index) {
checkWidget();
if (index == -1) {
list.deselectAll();
text.setText(""); // $NON-NLS-1$
return;
}
if (0 <= index && index < list.getItemCount()) {
if (index != getSelectionIndex()) {
text.setText(list.getItem(index));
text.selectAll();
list.select(index);
list.showSelection();
}
}
}
public void deselectAll() {
checkWidget();
list.deselectAll();
}
/**
* Sets the selection in the receiver's text field to an empty selection starting just before the
* first character. If the text field is editable, this has the effect of placing the i-beam at
* the start of the text.
*
* <p>Note: To clear the selected items in the receiver's list, use <code>deselectAll()</code>.
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*
* @see #deselectAll
*/
public void clearSelection() {
checkWidget();
text.clearSelection();
list.deselectAll();
}
void textEvent(Event event) {
switch (event.type) {
case SWT.FocusIn:
{
handleFocus(SWT.FocusIn);
break;
}
case SWT.KeyDown:
{
if (event.character == SWT.CR) {
dropDown(false);
Event e = new Event();
e.time = event.time;
e.stateMask = event.stateMask;
notifyListeners(SWT.DefaultSelection, e);
}
// At this point the widget may have been disposed.
// If so, do not continue.
if (isDisposed()) break;
if (event.keyCode == SWT.ARROW_UP || event.keyCode == SWT.ARROW_DOWN) {
event.doit = false;
if ((event.stateMask & SWT.ALT) != 0) {
boolean dropped = isDropped();
text.selectAll();
if (!dropped) setFocus();
dropDown(!dropped);
break;
}
int oldIndex = getSelectionIndex();
if (event.keyCode == SWT.ARROW_UP && popup.isVisible()) {
select(Math.max(oldIndex - 1, 0));
} else if (popup.isVisible()) {
select(Math.min(oldIndex + 1, getItemCount() - 1));
}
if (oldIndex != getSelectionIndex()) {
Event e = new Event();
e.time = event.time;
e.stateMask = event.stateMask;
notifyListeners(SWT.Selection, e);
}
// At this point the widget may have been disposed.
// If so, do not continue.
if (isDisposed()) break;
}
// Further work : Need to add support for incremental search in
// pop up list as characters typed in text widget
Event e = new Event();
e.time = event.time;
e.character = event.character;
e.keyCode = event.keyCode;
e.stateMask = event.stateMask;
notifyListeners(SWT.KeyDown, e);
break;
}
case SWT.KeyUp:
{
Event e = new Event();
e.time = event.time;
e.character = event.character;
e.keyCode = event.keyCode;
e.stateMask = event.stateMask;
notifyListeners(SWT.KeyUp, e);
break;
}
case SWT.Modify:
{
list.deselectAll();
Event e = new Event();
e.time = event.time;
notifyListeners(SWT.Modify, e);
break;
}
case SWT.MouseDown:
{
if (event.button != 1) return;
if (text.getEditable()) return;
boolean dropped = isDropped();
text.selectAll();
if (!dropped) setFocus();
dropDown(!dropped);
break;
}
case SWT.MouseUp:
{
if (event.button != 1) return;
if (text.getEditable()) return;
text.selectAll();
break;
}
case SWT.Traverse:
{
switch (event.detail) {
case SWT.TRAVERSE_RETURN:
case SWT.TRAVERSE_ARROW_PREVIOUS:
case SWT.TRAVERSE_ARROW_NEXT:
// The enter causes default selection and
// the arrow keys are used to manipulate the list contents so
// do not use them for traversal.
event.doit = false;
break;
}
Event e = new Event();
e.time = event.time;
e.detail = event.detail;
e.doit = event.doit;
e.character = event.character;
e.keyCode = event.keyCode;
notifyListeners(SWT.Traverse, e);
event.doit = e.doit;
event.detail = e.detail;
break;
}
}
}
@Override
protected void listDeselectAll() {
list.deselectAll();
}