2 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3 * Copyright (C) $$Year-Rel$$ The Jalview Authors
5 * This file is part of Jalview.
7 * Jalview is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation, either version 3
10 * of the License, or (at your option) any later version.
12 * Jalview is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
19 * The Jalview Authors are detailed in the 'AUTHORS' file.
23 import java.awt.event.MouseEvent;
26 * System platform information used by Applet and Application
32 private static Boolean isAMac = null, isWindows = null, isLinux = null;
34 private static Boolean isHeadless = null;
37 * added to check LaF for Linux
41 public static boolean isLinux()
43 return (isLinux == null
44 ? (isLinux = (System.getProperty("os.name").indexOf("Linux") >= 0))
49 * sorry folks - Macs really are different
51 * @return true if we do things in a special way.
53 public static boolean isAMac()
57 isAMac = System.getProperty("os.name").indexOf("Mac") > -1;
60 return isAMac.booleanValue();
65 * Check if we are on a Microsoft plaform...
67 * @return true if we have to cope with another platform variation
69 public static boolean isWindows()
71 if (isWindows == null)
73 isWindows = System.getProperty("os.name").indexOf("Win") > -1;
75 return isWindows.booleanValue();
80 * @return true if we are running in non-interactive no UI mode
82 public static boolean isHeadless()
84 if (isHeadless == null)
86 isHeadless = "true".equals(System.getProperty("java.awt.headless"));
93 * @return nominal maximum command line length for this platform
95 public static int getMaxCommandLineLength()
97 // TODO: determine nominal limits for most platforms.
98 return 2046; // this is the max length for a windows NT system.
102 * Answers the input with every backslash replaced with a double backslash (an
103 * 'escaped' single backslash)
108 public static String escapeBackslashes(String s)
110 return s == null ? null : s.replace("\\", "\\\\");
114 * Answers true if the mouse event has Meta-down (Command key on Mac) or
115 * Ctrl-down (on other o/s). Note this answers _false_ if the Ctrl key is
116 * pressed instead of the Meta/Cmd key on Mac. To test for Ctrl-click on Mac,
117 * you can use e.isPopupTrigger().
122 public static boolean isControlDown(MouseEvent e)
124 boolean aMac = isAMac();
125 return isControlDown(e, aMac);
129 * Overloaded version of method (to allow unit testing)
135 protected static boolean isControlDown(MouseEvent e, boolean aMac)
140 * answer false for right mouse button
142 if (e.isPopupTrigger())
146 return (jalview.util.ShortcutKeyMaskExWrapper
147 .getMenuShortcutKeyMaskEx() // .getMenuShortcutKeyMaskEx()
148 & jalview.util.ShortcutKeyMaskExWrapper
149 .getModifiersEx(e)) != 0; // getModifiers()) != 0;
151 return e.isControlDown();
155 * A (case sensitive) file path comparator that ignores the difference between
162 public static boolean pathEquals(String path1, String path2)
166 return path2 == null;
172 String p1 = path1.replace('\\', '/');
173 String p2 = path2.replace('\\', '/');
174 return p1.equals(p2);