*/
private boolean limitToListValue = true;
+ /**
+ * The maximum height of the values drop-down when it is visible.
+ */
+ private int maxValuesHeight = 3;
+
// ------------------------------------------------------------------------
// Constructors -----------------------------------------------------------
// ------------------------------------------------------------------------
* @param values the possible values for the box, shown in the drop-down
* @param valuesIndex the initial index in values, or -1 for no default
* value
- * @param valuesHeight the height of the values drop-down when it is
- * visible
+ * @param maxValuesHeight the maximum height of the values drop-down when
+ * it is visible
* @param updateAction action to call when a new value is selected from
* the list or enter is pressed in the edit field
*/
public TComboBox(final TWidget parent, final int x, final int y,
final int width, final List<String> values, final int valuesIndex,
- final int valuesHeight, final TAction updateAction) {
+ final int maxValuesHeight, final TAction updateAction) {
// Set parent and window
super(parent, x, y, width, 1);
assert (values != null);
this.updateAction = updateAction;
+ this.maxValuesHeight = maxValuesHeight;
- field = new TField(this, 0, 0, width - 3, false, "",
- updateAction, null);
- if (valuesIndex >= 0) {
+ field = addField(0, 0, width - 3, false, "", updateAction, null);
+ if ((valuesIndex >= 0) && (valuesIndex < values.size())) {
field.setText(values.get(valuesIndex));
}
- list = new TList(this, values, 0, 1, width, valuesHeight,
+ list = addList(values, 0, 1, width,
+ Math.max(3, Math.min(values.size() + 1, maxValuesHeight)),
new TAction() {
public void DO() {
field.setText(list.getSelected());
list.setEnabled(false);
list.setVisible(false);
- TComboBox.this.setHeight(1);
+ TComboBox.super.setHeight(1);
if (TComboBox.this.limitToListValue == false) {
TComboBox.this.activate(field);
}
if (updateAction != null) {
- updateAction.DO();
+ updateAction.DO(TComboBox.this);
}
}
}
list.setEnabled(false);
list.setVisible(false);
- setHeight(1);
+ super.setHeight(1);
if (limitToListValue) {
field.setEnabled(false);
} else {
if ((mouseOnArrow(mouse)) && (mouse.isMouse1())) {
// Make the list visible or not.
if (list.isActive()) {
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue == false) {
- activate(field);
- }
+ hideList();
} else {
- list.setEnabled(true);
- list.setVisible(true);
- setHeight(list.getHeight() + 1);
- activate(list);
+ showList();
}
}
public void onKeypress(final TKeypressEvent keypress) {
if (keypress.equals(kbEsc)) {
if (list.isActive()) {
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue == false) {
- activate(field);
- }
+ hideList();
return;
}
}
if (keypress.equals(kbAltDown)) {
- list.setEnabled(true);
- list.setVisible(true);
- setHeight(list.getHeight() + 1);
- activate(list);
+ showList();
return;
}
|| (keypress.equals(kbBackTab))
) {
if (list.isActive()) {
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue == false) {
- activate(field);
- }
+ hideList();
return;
}
}
// TWidget ----------------------------------------------------------------
// ------------------------------------------------------------------------
+ /**
+ * Override TWidget's width: we need to set child widget widths.
+ *
+ * @param width new widget width
+ */
+ @Override
+ public void setWidth(final int width) {
+ if (field != null) {
+ field.setWidth(width - 3);
+ }
+ if (list != null) {
+ list.setWidth(width);
+ }
+ super.setWidth(width);
+ }
+
+ /**
+ * Override TWidget's height: we can only set height at construction
+ * time.
+ *
+ * @param height new widget height (ignored)
+ */
+ @Override
+ public void setHeight(final int height) {
+ // Do nothing
+ }
+
/**
* Draw the combobox down arrow.
*/
if (!isAbsoluteActive()) {
// We lost focus, turn off the list.
if (list.isActive()) {
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue == false) {
- activate(field);
- }
+ hideList();
}
}
// TComboBox --------------------------------------------------------------
// ------------------------------------------------------------------------
+ /**
+ * Hide the drop-down list.
+ */
+ public void hideList() {
+ list.setEnabled(false);
+ list.setVisible(false);
+ super.setHeight(1);
+ if (limitToListValue == false) {
+ activate(field);
+ }
+ }
+
+ /**
+ * Show the drop-down list.
+ */
+ public void showList() {
+ list.setEnabled(true);
+ list.setVisible(true);
+ super.setHeight(list.getHeight() + 1);
+ activate(list);
+ }
+
/**
* Get combobox text value.
*
*/
public final void setList(final List<String> list) {
this.list.setList(list);
+ this.list.setHeight(Math.max(3, Math.min(list.size() + 1,
+ maxValuesHeight)));
field.setText("");
}