--- /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.GraphicsChars;
+import jexer.bits.MnemonicString;
+import jexer.bits.StringUtils;
+import jexer.event.TKeypressEvent;
+import jexer.event.TMouseEvent;
+import static jexer.TKeypress.*;
+
+/**
+ * TRadioButton implements a selectable radio button.
+ *
+ * If the user clicks or presses space on this button, it is selected.
+ *
+ * If the user presses escape on this button, it is unselected.
+ */
+public class TRadioButton extends TWidget {
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * RadioButton state, true means selected.
+ */
+ private boolean selected = false;
+
+ /**
+ * The shortcut and radio button label.
+ */
+ private MnemonicString mnemonic;
+
+ /**
+ * ID for this radio button. Buttons start counting at 1 in the
+ * RadioGroup.
+ */
+ private int id;
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Public constructor.
+ *
+ * @param parent parent widget
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param label label to display next to (right of) the radiobutton
+ * @param id ID for this radio button
+ */
+ public TRadioButton(final TRadioGroup parent, final int x, final int y,
+ final String label, final int id) {
+
+ // Set parent and window
+ super(parent, x, y, StringUtils.width(label) + 4, 1);
+
+ mnemonic = new MnemonicString(label);
+ this.id = id;
+
+ setCursorVisible(true);
+ setCursorX(1);
+ }
+
+ // ------------------------------------------------------------------------
+ // Event handlers ---------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Returns true if the mouse is currently on the radio button.
+ *
+ * @param mouse mouse event
+ * @return if true the mouse is currently on the radio button
+ */
+ private boolean mouseOnRadioButton(final TMouseEvent mouse) {
+ if ((mouse.getY() == 0)
+ && (mouse.getX() >= 0)
+ && (mouse.getX() <= 2)
+ ) {
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Handle mouse button presses.
+ *
+ * @param mouse mouse button press event
+ */
+ @Override
+ public void onMouseDown(final TMouseEvent mouse) {
+ if ((mouseOnRadioButton(mouse)) && (mouse.isMouse1())) {
+ // Switch state
+ selected = true;
+ ((TRadioGroup) getParent()).setSelected(this);
+ }
+ }
+
+ /**
+ * Handle keystrokes.
+ *
+ * @param keypress keystroke event
+ */
+ @Override
+ public void onKeypress(final TKeypressEvent keypress) {
+
+ if (keypress.equals(kbSpace)) {
+ selected = true;
+ ((TRadioGroup) getParent()).setSelected(this);
+ return;
+ }
+
+ if (keypress.equals(kbEsc)) {
+ TRadioGroup parent = (TRadioGroup) getParent();
+ if (parent.requiresSelection == false) {
+ selected = false;
+ parent.setSelected(0);
+ }
+ return;
+ }
+
+ // Pass to parent for the things we don't care about.
+ super.onKeypress(keypress);
+ }
+
+ // ------------------------------------------------------------------------
+ // 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 radioButtonColor;
+ CellAttributes mnemonicColor;
+
+ if (isAbsoluteActive()) {
+ radioButtonColor = getTheme().getColor("tradiobutton.active");
+ mnemonicColor = getTheme().getColor("tradiobutton.mnemonic.highlighted");
+ } else {
+ radioButtonColor = getTheme().getColor("tradiobutton.inactive");
+ mnemonicColor = getTheme().getColor("tradiobutton.mnemonic");
+ }
+
+ putCharXY(0, 0, '(', radioButtonColor);
+ if (selected) {
+ putCharXY(1, 0, GraphicsChars.CP437[0x07], radioButtonColor);
+ } else {
+ putCharXY(1, 0, ' ', radioButtonColor);
+ }
+ putCharXY(2, 0, ')', radioButtonColor);
+ putStringXY(4, 0, mnemonic.getRawLabel(), radioButtonColor);
+ if (mnemonic.getScreenShortcutIdx() >= 0) {
+ putCharXY(4 + mnemonic.getScreenShortcutIdx(), 0,
+ mnemonic.getShortcut(), mnemonicColor);
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // TRadioButton -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get RadioButton state, true means selected.
+ *
+ * @return if true then this is the one button in the group that is
+ * selected
+ */
+ public boolean isSelected() {
+ return selected;
+ }
+
+ /**
+ * Set RadioButton state, true means selected. Note package private
+ * access.
+ *
+ * @param selected if true then this is the one button in the group that
+ * is selected
+ */
+ void setSelected(final boolean selected) {
+ this.selected = selected;
+ }
+
+ /**
+ * Get ID for this radio button. Buttons start counting at 1 in the
+ * RadioGroup.
+ *
+ * @return the ID
+ */
+ public int getId() {
+ return id;
+ }
+
+ /**
+ * Get the mnemonic string for this button.
+ *
+ * @return mnemonic string
+ */
+ public MnemonicString getMnemonic() {
+ return mnemonic;
+ }
+
+}
git://git.nikiroo.be / fanfix.git / blobdiff