/*
* Copyright (c) 2001-2006 JGoodies Karsten Lentzsch. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* o Neither the name of JGoodies Karsten Lentzsch nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.pushingpixels.neon.internal.contrib.jgoodies.looks;
import java.awt.*;
/**
* Provides convenience behavior used by the JGoodies Looks.
*
* @author Karsten Lentzsch
*/
public final class LookUtils {
// Basics System Properties **********************************************
/**
* The <code>os.name</code> System Property. Operating system name.
* <p>
* <p>
* Defaults to <code>null</code> if the runtime does not have security
* access to read this property or the property does not exist.
*/
private static final String OS_NAME = getSystemProperty("os.name");
/**
* The <code>os.version</code> System Property. Operating system version.
* <p>
* <p>
* Defaults to <code>null</code> if the runtime does not have security
* access to read this property or the property does not exist.
*/
private static final String OS_VERSION = getSystemProperty("os.version");
// Requesting the Operating System Name ***********************************
/**
* True if this is the Mac OS X.
*/
public static final boolean IS_OS_MAC = startsWith(OS_NAME, "Mac");
/**
* True if this is Windows.
*/
public static final boolean IS_OS_WINDOWS = startsWith(OS_NAME, "Windows");
/**
* True if this is Windows 95.
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_95 = startsWith(OS_NAME,
"Windows 9")
&& startsWith(OS_VERSION, "4.0");
/**
* True if this is Windows 98.
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_98 = startsWith(OS_NAME,
"Windows 9")
&& startsWith(OS_VERSION, "4.1");
/**
* True if this is Windows NT.
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_NT = startsWith(OS_NAME,
"Windows NT");
/**
* True if this is Windows ME.
*
* @since 2.0
*/
public static final boolean IS_OS_WINDOWS_ME = startsWith(OS_NAME,
"Windows")
&& startsWith(OS_VERSION, "4.9");
/**
* True if this is Mac Yosemite.
*/
public static final boolean IS_OS_MAC_YOSEMITE = IS_OS_MAC
&& startsWith(OS_VERSION, "10.10");
/**
* True if this is Mac El Capitan or later
*/
public static final boolean IS_OS_MAC_EL_CAPITAN_OR_LATER = IS_OS_MAC
&& (startsWith(OS_VERSION, "10.11") || startsWith(OS_VERSION, "10.12")
|| startsWith(OS_VERSION, "10.13") || startsWith(OS_VERSION, "10.14"))
|| startsWith(OS_VERSION, "10.15");
/**
* True if this is Mac Mojave or later
*/
public static final boolean IS_OS_MAC_MOJAVE_OR_LATER = IS_OS_MAC
&& (startsWith(OS_VERSION, "10.14") || startsWith(OS_VERSION, "10.15"));
/**
* True if this is Mac Mojave or later
*/
public static final boolean IS_OS_MAC_CATALINA_OR_LATER = IS_OS_MAC
&& startsWith(OS_VERSION, "10.15");
// Other Properties *******************************************************
/**
* True if if the screen resolution is smaller than 120 dpi.
*
* @see Toolkit#getScreenResolution()
*/
public static final boolean IS_LOW_RESOLUTION = isLowResolution();
private LookUtils() {
// Override default constructor; prevents instantiation.
}
// Accessing System Configuration *****************************************
/**
* Tries to look up the System property for the given key. In untrusted
* environments this may throw a SecurityException. In this case we catch
* the exception and answer <code>null</code>.
*
* @param key the name of the system property
* @return the system property's String value, or <code>null</code> if
* there's no such value, or a SecurityException has been caught
*/
public static String getSystemProperty(String key) {
try {
return System.getProperty(key);
} catch (SecurityException e) {
// log("Can't read the System property " + key + ".");
return null;
}
}
/**
* Tries to look up the System property for the given key. In untrusted
* environments this may throw a SecurityException. In this case, we catch
* the exception and answer the default value.
*
* @param key the name of the system property
* @param defaultValue the default value if no property exists.
* @return the system property's String value, or the defaultValue if
* there's no such value, or a SecurityException has been caught
*/
public static String getSystemProperty(String key, String defaultValue) {
try {
return System.getProperty(key, defaultValue);
} catch (SecurityException e) {
// log("Can't read the System property " + key + ".");
return defaultValue;
}
}
// Private Helper Methods ***********************************************
/**
* Checks and answers whether the screen resolution is low or high.
* Resolutions below 120 dpi are considere low, all others are high.
*
* @return true if the screen resolution is smaller than 120 dpi
*/
private static boolean isLowResolution() {
return Toolkit.getDefaultToolkit().getScreenResolution() < 120;
}
private static boolean startsWith(String str, String prefix) {
return str != null && str.startsWith(prefix);
}
}