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e8a11f98 KL |
1 | /* |
2 | * Jexer - Java Text User Interface | |
3 | * | |
4 | * The MIT License (MIT) | |
5 | * | |
a69ed767 | 6 | * Copyright (C) 2019 Kevin Lamonte |
e8a11f98 KL |
7 | * |
8 | * Permission is hereby granted, free of charge, to any person obtaining a | |
9 | * copy of this software and associated documentation files (the "Software"), | |
10 | * to deal in the Software without restriction, including without limitation | |
11 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
12 | * and/or sell copies of the Software, and to permit persons to whom the | |
13 | * Software is furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
24 | * DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
27 | * @version 1 | |
28 | */ | |
29 | package jexer.teditor; | |
30 | ||
31 | import java.util.SortedMap; | |
32 | import java.util.TreeMap; | |
33 | ||
34 | import jexer.bits.CellAttributes; | |
35 | import jexer.bits.Color; | |
36 | ||
37 | /** | |
38 | * Highlighter provides color choices for certain text strings. | |
39 | */ | |
40 | public class Highlighter { | |
41 | ||
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42 | // ------------------------------------------------------------------------ |
43 | // Variables -------------------------------------------------------------- | |
44 | // ------------------------------------------------------------------------ | |
45 | ||
e8a11f98 KL |
46 | /** |
47 | * The highlighter colors. | |
48 | */ | |
49 | private SortedMap<String, CellAttributes> colors; | |
50 | ||
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51 | // ------------------------------------------------------------------------ |
52 | // Constructors ----------------------------------------------------------- | |
53 | // ------------------------------------------------------------------------ | |
54 | ||
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55 | /** |
56 | * Public constructor sets the theme to the default. | |
57 | */ | |
58 | public Highlighter() { | |
59 | colors = new TreeMap<String, CellAttributes>(); | |
60 | } | |
61 | ||
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62 | // ------------------------------------------------------------------------ |
63 | // Highlighter ------------------------------------------------------------ | |
64 | // ------------------------------------------------------------------------ | |
65 | ||
e8a11f98 KL |
66 | /** |
67 | * See if this is a character that should split a word. | |
68 | * | |
69 | * @param ch the character | |
70 | * @return true if the word should be split | |
71 | */ | |
2d3f60d8 | 72 | public boolean shouldSplit(final int ch) { |
e8a11f98 KL |
73 | // For now, split on punctuation |
74 | String punctuation = "'\"\\<>{}[]!@#$%^&*();:.,-+/*?"; | |
2d3f60d8 KL |
75 | if (ch < 0x100) { |
76 | if (punctuation.indexOf((char) ch) != -1) { | |
77 | return true; | |
78 | } | |
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79 | } |
80 | return false; | |
81 | } | |
82 | ||
83 | /** | |
84 | * Retrieve the CellAttributes for a named theme color. | |
85 | * | |
86 | * @param name theme color name, e.g. "twindow.border" | |
87 | * @return color associated with name, e.g. bold yellow on blue | |
88 | */ | |
89 | public CellAttributes getColor(final String name) { | |
90 | CellAttributes attr = (CellAttributes) colors.get(name); | |
91 | return attr; | |
92 | } | |
93 | ||
94 | /** | |
95 | * Sets to defaults that resemble the Borland IDE colors. | |
96 | */ | |
97 | public void setJavaColors() { | |
98 | CellAttributes color; | |
99 | ||
100 | String [] keywords = { | |
101 | "boolean", "byte", "short", "int", "long", "char", "float", | |
102 | "double", "void", "new", | |
103 | "static", "final", "volatile", "synchronized", "abstract", | |
104 | "public", "private", "protected", | |
105 | "class", "interface", "extends", "implements", | |
106 | "if", "else", "do", "while", "for", "break", "continue", | |
107 | "switch", "case", "default", | |
108 | }; | |
109 | color = new CellAttributes(); | |
110 | color.setForeColor(Color.WHITE); | |
111 | color.setBackColor(Color.BLUE); | |
112 | color.setBold(true); | |
113 | for (String str: keywords) { | |
114 | colors.put(str, color); | |
115 | } | |
116 | ||
117 | String [] operators = { | |
118 | "[", "]", "(", ")", "{", "}", | |
119 | "*", "-", "+", "/", "=", "%", | |
120 | "^", "&", "!", "<<", ">>", "<<<", ">>>", | |
121 | "&&", "||", | |
122 | ">", "<", ">=", "<=", "!=", "==", | |
123 | ",", ";", ".", "?", ":", | |
124 | }; | |
125 | color = new CellAttributes(); | |
126 | color.setForeColor(Color.CYAN); | |
127 | color.setBackColor(Color.BLUE); | |
128 | color.setBold(true); | |
129 | for (String str: operators) { | |
130 | colors.put(str, color); | |
131 | } | |
132 | ||
133 | String [] packageKeywords = { | |
134 | "package", "import", | |
135 | }; | |
136 | color = new CellAttributes(); | |
137 | color.setForeColor(Color.GREEN); | |
138 | color.setBackColor(Color.BLUE); | |
139 | color.setBold(true); | |
140 | for (String str: packageKeywords) { | |
141 | colors.put(str, color); | |
142 | } | |
143 | ||
144 | } | |
145 | ||
e8a11f98 | 146 | } |