--- /dev/null
+/*
+ * Jexer - Java Text User Interface
+ *
+ * The MIT License (MIT)
+ *
+ * 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"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer;
+
+import jexer.bits.CellAttributes;
+import jexer.bits.StringUtils;
+
+/**
+ * TRadioGroup is a collection of TRadioButtons with a box and label.
+ */
+public class TRadioGroup extends TWidget {
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Label for this radio button group.
+ */
+ private String label;
+
+ /**
+ * Only one of my children can be selected.
+ */
+ private TRadioButton selectedButton = null;
+
+ /**
+ * If true, one of the children MUST be selected. Note package private
+ * access.
+ */
+ boolean requiresSelection = true;
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Public constructor.
+ *
+ * @param parent parent widget
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param label label to display on the group box
+ */
+ public TRadioGroup(final TWidget parent, final int x, final int y,
+ final String label) {
+
+ // Set parent and window
+ super(parent, x, y, StringUtils.width(label) + 4, 2);
+
+ this.label = label;
+ }
+
+ // ------------------------------------------------------------------------
+ // TWidget ----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Override TWidget's width: we can only set width at construction time.
+ *
+ * @param width new widget width (ignored)
+ */
+ @Override
+ public void setWidth(final int width) {
+ // Do nothing
+ }
+
+ /**
+ * 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 a radio button with label.
+ */
+ @Override
+ public void draw() {
+ CellAttributes radioGroupColor;
+
+ if (isAbsoluteActive()) {
+ radioGroupColor = getTheme().getColor("tradiogroup.active");
+ } else {
+ radioGroupColor = getTheme().getColor("tradiogroup.inactive");
+ }
+
+ drawBox(0, 0, getWidth(), getHeight(), radioGroupColor, radioGroupColor,
+ 3, false);
+
+ hLineXY(1, 0, StringUtils.width(label) + 2, ' ', radioGroupColor);
+ putStringXY(2, 0, label, radioGroupColor);
+ }
+
+ // ------------------------------------------------------------------------
+ // TRadioGroup ------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get the radio button ID that was selected.
+ *
+ * @return ID of the selected button, or 0 if no button is selected
+ */
+ public int getSelected() {
+ if (selectedButton == null) {
+ return 0;
+ }
+ return selectedButton.getId();
+ }
+
+ /**
+ * Set the new selected radio button. Note package private access.
+ *
+ * @param button new button that became selected
+ */
+ void setSelected(final TRadioButton button) {
+ assert (button.isSelected());
+ 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.
+ *
+ * @param label label to display next to (right of) the radiobutton
+ * @return the new radio button
+ */
+ public TRadioButton addRadioButton(final String label) {
+ int buttonX = 1;
+ int buttonY = getChildren().size() + 1;
+ if (StringUtils.width(label) + 4 > getWidth()) {
+ super.setWidth(StringUtils.width(label) + 7);
+ }
+ super.setHeight(getChildren().size() + 3);
+ TRadioButton button = new TRadioButton(this, buttonX, buttonY, label,
+ getChildren().size() + 1);
+
+ if (getParent().getLayoutManager() != null) {
+ getParent().getLayoutManager().resetSize(this);
+ }
+
+ // Default to the first item on the list.
+ activate(getChildren().get(0));
+
+ return button;
+ }
+
+}
git://git.nikiroo.be / fanfix.git / blobdiff