#35 wip

[fanfix.git] / src / jexer / bits / MnemonicString.java

diff --git a/src/jexer/bits/MnemonicString.java b/src/jexer/bits/MnemonicString.java
index edd5227b7136349be47211f3e814a16cbd70c87b..2d5dbc8cd2533ebb8697b247a744ea2b82aa3202 100644 (file)
--- a/src/jexer/bits/MnemonicString.java
+++ b/src/jexer/bits/MnemonicString.java
@@ -3,7 +3,7 @@
  *
  * 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"),
@@ -29,12 +29,12 @@
 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 --------------------------------------------------------------
@@ -50,6 +50,12 @@ public final class MnemonicString {
      */
     private int shortcutIdx = -1;
 
+    /**
+     * Screen location of the highlighted character (number of text cells
+     * required to display from the beginning to shortcutIdx).
+     */
+    private int screenShortcutIdx = -1;
+
     /**
      * The raw (uncolored) string.
      */
@@ -63,7 +69,7 @@ public final class MnemonicString {
      * 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) {
 
@@ -72,12 +78,14 @@ public final class MnemonicString {
         boolean foundAmp = false;
         boolean foundShortcut = false;
         int scanShortcutIdx = 0;
+        int scanScreenShortcutIdx = 0;
         for (int i = 0; i < label.length(); i++) {
             char c = label.charAt(i);
             if (c == '&') {
                 if (foundAmp) {
                     newLabel += '&';
                     scanShortcutIdx++;
+                    scanScreenShortcutIdx++;
                 } else {
                     foundAmp = true;
                 }
@@ -89,9 +97,11 @@ public final class MnemonicString {
                         foundAmp = false;
                         foundShortcut = true;
                         shortcutIdx = scanShortcutIdx;
+                        screenShortcutIdx = scanScreenShortcutIdx;
                     }
                 } else {
                     scanShortcutIdx++;
+                    scanScreenShortcutIdx += StringUtils.width(c);
                 }
             }
         }
@@ -120,6 +130,16 @@ public final class MnemonicString {
         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.
      *