*
* The MIT License (MIT)
*
- * Copyright (C) 2017 Kevin Lamonte
+ * Copyright (C) 2019 Kevin Lamonte
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
package jexer;
import jexer.bits.CellAttributes;
+import jexer.bits.StringUtils;
/**
* TRadioGroup is a collection of TRadioButtons with a box and label.
*/
private TRadioButton selectedButton = null;
+ /**
+ * If true, one of the children MUST be selected. Note package private
+ * access.
+ */
+ boolean requiresSelection = true;
+
// ------------------------------------------------------------------------
// Constructors -----------------------------------------------------------
// ------------------------------------------------------------------------
final String label) {
// Set parent and window
- super(parent, x, y, label.length() + 4, 2);
+ super(parent, x, y, StringUtils.width(label) + 4, 2);
this.label = label;
}
radioGroupColor = getTheme().getColor("tradiogroup.inactive");
}
- getScreen().drawBox(0, 0, getWidth(), getHeight(),
- radioGroupColor, radioGroupColor, 3, false);
+ drawBox(0, 0, getWidth(), getHeight(), radioGroupColor, radioGroupColor,
+ 3, false);
- getScreen().hLineXY(1, 0, label.length() + 2, ' ', radioGroupColor);
- getScreen().putStringXY(2, 0, label, radioGroupColor);
+ hLineXY(1, 0, StringUtils.width(label) + 2, ' ', radioGroupColor);
+ putStringXY(2, 0, label, radioGroupColor);
}
// ------------------------------------------------------------------------
*/
void setSelected(final TRadioButton button) {
assert (button.isSelected());
- if (selectedButton != null) {
+ if ((selectedButton != null) && (selectedButton != button)) {
selectedButton.setSelected(false);
}
selectedButton = button;
}
+ /**
+ * Set the new selected radio button. 1-based.
+ *
+ * @param id ID of the selected button, or 0 to unselect
+ */
+ public void setSelected(final int id) {
+ if ((id < 0) || (id > getChildren().size())) {
+ return;
+ }
+
+ if (id == 0) {
+ for (TWidget widget: getChildren()) {
+ ((TRadioButton) widget).setSelected(false);
+ }
+ selectedButton = null;
+ return;
+ }
+ assert ((id > 0) && (id <= getChildren().size()));
+ TRadioButton button = (TRadioButton) (getChildren().get(id - 1));
+ button.setSelected(true);
+ selectedButton = button;
+ }
+
/**
* Convenience function to add a radio button to this group.
*
public TRadioButton addRadioButton(final String label) {
int buttonX = 1;
int buttonY = getChildren().size() + 1;
- if (label.length() + 4 > getWidth()) {
- setWidth(label.length() + 7);
+ if (StringUtils.width(label) + 4 > getWidth()) {
+ setWidth(StringUtils.width(label) + 7);
}
setHeight(getChildren().size() + 3);
- return new TRadioButton(this, buttonX, buttonY, label,
+ TRadioButton button = new TRadioButton(this, buttonX, buttonY, label,
getChildren().size() + 1);
+
+ // Default to the first item on the list.
+ activate(getChildren().get(0));
+
+ return button;
}
}