*
* The MIT License (MIT)
*
- * Copyright (C) 2016 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.bits;
/**
- * MnemonicString is used to render a string like "&File" into a highlighted
- * 'F' and the rest of 'ile'. To insert a literal '&', use two '&&'
- * characters, e.g. "&File && Stuff" would be "File & Stuff" with the first
- * 'F' highlighted.
+ * MnemonicString is used to render a string like "&File" into a
+ * highlighted 'F' and the rest of 'ile'. To insert a literal '&', use
+ * two '&&' characters, e.g. "&File && Stuff" would be
+ * "File & Stuff" with the first 'F' highlighted.
*/
-public final class MnemonicString {
+public class MnemonicString {
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* Keyboard shortcut to activate this item.
*/
- private char shortcut;
-
- /**
- * Get the keyboard shortcut character.
- *
- * @return the highlighted character
- */
- public char getShortcut() {
- return shortcut;
- }
+ private int shortcut;
/**
* Location of the highlighted character.
private int shortcutIdx = -1;
/**
- * Get location of the highlighted character.
- *
- * @return location of the highlighted character
+ * Screen location of the highlighted character (number of text cells
+ * required to display from the beginning to shortcutIdx).
*/
- public int getShortcutIdx() {
- return shortcutIdx;
- }
+ private int screenShortcutIdx = -1;
/**
* The raw (uncolored) string.
*/
private String rawLabel;
- /**
- * Get the raw (uncolored) string.
- *
- * @return the raw (uncolored) string
- */
- public String getRawLabel() {
- return rawLabel;
- }
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* Public constructor.
*
* @param label widget label or title. Label must contain a keyboard
- * shortcut, denoted by prefixing a letter with "&", e.g. "&File"
+ * shortcut, denoted by prefixing a letter with "&", e.g. "&File"
*/
public MnemonicString(final String label) {
// Setup the menu shortcut
- String newLabel = "";
+ StringBuilder newLabel = new StringBuilder();
boolean foundAmp = false;
boolean foundShortcut = false;
int scanShortcutIdx = 0;
- for (int i = 0; i < label.length(); i++) {
- char c = label.charAt(i);
+ int scanScreenShortcutIdx = 0;
+ for (int i = 0; i < label.length();) {
+ int c = label.codePointAt(i);
+ i += Character.charCount(c);
+
if (c == '&') {
if (foundAmp) {
- newLabel += '&';
+ newLabel.append('&');
scanShortcutIdx++;
+ scanScreenShortcutIdx++;
} else {
foundAmp = true;
}
} else {
- newLabel += c;
+ newLabel.append(Character.toChars(c));
if (foundAmp) {
if (!foundShortcut) {
shortcut = c;
foundAmp = false;
foundShortcut = true;
shortcutIdx = scanShortcutIdx;
+ screenShortcutIdx = scanScreenShortcutIdx;
}
} else {
scanShortcutIdx++;
+ scanScreenShortcutIdx += StringUtils.width(c);
}
}
}
- this.rawLabel = newLabel;
+ this.rawLabel = newLabel.toString();
}
+
+ // ------------------------------------------------------------------------
+ // MnemonicString ---------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get the keyboard shortcut character.
+ *
+ * @return the highlighted character
+ */
+ public int getShortcut() {
+ return shortcut;
+ }
+
+ /**
+ * Get location of the highlighted character.
+ *
+ * @return location of the highlighted character
+ */
+ public int getShortcutIdx() {
+ return shortcutIdx;
+ }
+
+ /**
+ * Get the screen location of the highlighted character.
+ *
+ * @return the number of text cells required to display from the
+ * beginning of the label to shortcutIdx
+ */
+ public int getScreenShortcutIdx() {
+ return screenShortcutIdx;
+ }
+
+ /**
+ * Get the raw (uncolored) string.
+ *
+ * @return the raw (uncolored) string
+ */
+ public String getRawLabel() {
+ return rawLabel;
+ }
+
}