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Delegate Sys platform dependent methods into SysImplementation instances

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This commit is contained in:
Elias Naur 2005-01-18 20:23:05 +00:00
parent 87ce7a85af
commit 66181d1486
14 changed files with 253 additions and 365 deletions
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102
src/java/org/lwjgl/Sys.java
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@ -51,27 +51,54 @@ public final class Sys {
public static final String VERSION = "0.94";
/** The native library name */
private static String LIBRARY_NAME = "lwjgl";
private static final String LIBRARY_NAME = "lwjgl";
/** The platform adapter class name */
private static String PLATFORM;
private static final String PLATFORM;
/**
* Debug flag.
*/
public static final boolean DEBUG = Boolean.getBoolean("org.lwjgl.Sys.debug");
private static boolean initialized;
/**
* The implementation instance to delegate platform specific behavior to
*/
private final static SysImplementation implementation;
static {
initialize();
System.loadLibrary(LIBRARY_NAME);
implementation = createImplementation();
String native_version = implementation.getNativeLibraryVersion();
if (!native_version.equals(VERSION))
throw new LinkageError("Version mismatch: jar version is '" + VERSION +
"', native libary version is '" + native_version + "'");
implementation.setDebug(DEBUG);
PLATFORM = System.getProperty("org.lwjgl.Sys.platform", "org.lwjgl.SwingAdapter");
}
/**
* @return the name of the native library to load
*/
private static String getLibraryName() {
return LIBRARY_NAME;
private static SysImplementation createImplementation() {
String class_name;
String os_name = System.getProperty("os.name");
if (os_name.startsWith("Linux")) {
class_name = "org.lwjgl.LinuxSysImplementation";
} else if (os_name.startsWith("Windows")) {
class_name = "org.lwjgl.Win32SysImplementation";
} else if (os_name.startsWith("Mac")) {
class_name = "org.lwjgl.MacOSXSysImplementation";
} else
throw new IllegalStateException("The platform " + os_name + " is not supported");
try {
Class impl_class = Class.forName(class_name);
return (SysImplementation)impl_class.newInstance();
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
} catch (InstantiationException e) {
throw new RuntimeException(e);
}
}
/**
@ -91,39 +118,19 @@ public final class Sys {
}
/**
* Initialization.
* Initialization. This is just a dummy method to trigger the static constructor.
*/
public static void initialize() {
if (initialized)
return;
initialized = true;
System.loadLibrary(LIBRARY_NAME);
String native_version = getNativeLibraryVersion();
if (!native_version.equals(VERSION))
throw new LinkageError("Version mismatch: jar version is '" + VERSION +
"', native libary version is '" + native_version + "'");
setDebug(DEBUG);
PLATFORM = System.getProperty("org.lwjgl.Sys.platform", "org.lwjgl.SwingAdapter");
}
/**
* Return the version of the native library
*/
private static native String getNativeLibraryVersion();
/**
* Set the debug level of the native library
*/
private static native void setDebug(boolean debug);
/**
* Obtains the number of ticks that the hires timer does in a second.
*
* @return timer resolution in ticks per second or 0 if no timer is present.
*/
public static native long getTimerResolution();
public static long getTimerResolution() {
return implementation.getTimerResolution();
}
/**
* Gets the current value of the hires timer, in ticks. When the Sys class is first loaded
@ -133,9 +140,8 @@ public final class Sys {
* @return the current hires time, in ticks (always >= 0)
*/
public static long getTime() {
return ngetTime() & 0x7FFFFFFFFFFFFFFFL;
return implementation.getTime() & 0x7FFFFFFFFFFFFFFFL;
}
private static native long ngetTime();
/**
* Attempt to display a modal alert to the user. This method should be used
@ -165,23 +171,12 @@ public final class Sys {
if (message == null)
message = "";
String osName = System.getProperty("os.name");
if (osName.startsWith("Windows")) {
nAlert(title, message);
} else {
try {
PlatformAdapter adapter = (PlatformAdapter) Class.forName(PLATFORM).newInstance(); // This avoids a Jet error message
adapter.alert(title, message);
} catch (Exception e) {
Sys.log("Unable to display alert using: " + PLATFORM);
}
}
implementation.alert(title, message);
if (grabbed) {
Mouse.setGrabbed(true);
}
}
private static native void nAlert(String title, String message);
/**
* Open the system web browser and point it at the specified URL. It is recommended
* that this not be called whilst your game is running, but on application exit in
@ -212,7 +207,7 @@ public final class Sys {
return false;
}
} catch (Exception ue) {
return Display.getImplementation().openURL(url);
return implementation.openURL(url);
}
}
@ -225,15 +220,6 @@ public final class Sys {
* @return a String, or null if there is no system clipboard.
*/
public static String getClipboard() {
try {
PlatformAdapter adapter = (PlatformAdapter) Class.forName(PLATFORM).newInstance(); // This avoids a Jet error message
return adapter.getClipboard();
} catch (Throwable e) {
Sys.log("Unable to get clipboard contents: " + e);
// ignore exception and use native implementation
return nGetClipboard();
}
return implementation.getClipboard();
}
private static native String nGetClipboard();
}