X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fjexer%2FTRadioGroup.java;fp=src%2Fjexer%2FTRadioGroup.java;h=a82b074f8ce9a1c4fe6de462433b8d4124507b91;hb=12b90437b5f22c2ae6e9b9b14c3b62b60f6143e5;hp=0000000000000000000000000000000000000000;hpb=b709b36e17eb8807819e51297bb398ef28ece52d;p=fanfix.git

diff --git a/src/jexer/TRadioGroup.java b/src/jexer/TRadioGroup.java
new file mode 100644
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+++ b/src/jexer/TRadioGroup.java
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+/*
+ * 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;
+    }
+
+}