git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/startup/Application.java

   1 package net.sf.openrocket.startup;
   2
   3 import net.sf.openrocket.database.ThrustCurveMotorSetDatabase;
   4 import net.sf.openrocket.logging.LogHelper;
   5 import net.sf.openrocket.logging.LogLevel;
   6 import net.sf.openrocket.logging.LogLevelBufferLogger;
   7 import net.sf.openrocket.logging.PrintStreamLogger;
   8
   9 /**
  10  * A class that provides singleton instances / beans for other classes to utilize.
  11  *
  12  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  13  */
  14 public final class Application {
  15
  16         private static LogHelper logger;
  17         private static LogLevelBufferLogger logBuffer;
  18
  19         private static ThrustCurveMotorSetDatabase motorSetDatabase;
  20
  21
  22         // Initialize the logger to something sane for testing without executing Startup
  23         static {
  24                 setLogOutputLevel(LogLevel.DEBUG);
  25         }
  26
  27
  28         /**
  29          * Retrieve the logger to be used in logging.  By default this returns
  30          * a logger that outputs to stdout/stderr even if not separately initialized,
  31          * useful for development and debugging.
  32          */
  33         public static LogHelper getLogger() {
  34                 return logger;
  35         }
  36
  37         /**
  38          * Set the logger to be used in logging.  Note that calling this will only have effect
  39          * on not-yet loaded classes, as the instance is stored in a static variable.
  40          */
  41         public static void setLogger(LogHelper logger) {
  42                 Application.logger = logger;
  43         }
  44
  45
  46
  47         /**
  48          * Return the log buffer.
  49          *
  50          * @return the logBuffer or null if not initialized
  51          */
  52         public static LogLevelBufferLogger getLogBuffer() {
  53                 return logBuffer;
  54         }
  55
  56         /**
  57          * Set the log buffer logger.  The logger must be separately configured
  58          * to receive the logging.
  59          */
  60         public static void setLogBuffer(LogLevelBufferLogger logBuffer) {
  61                 Application.logBuffer = logBuffer;
  62         }
  63
  64
  65         /**
  66          * Set the logging to output the specified log level and upwards to standard output.
  67          *
  68          * @param level         the minimum logging level to output.
  69          */
  70         public static void setLogOutputLevel(LogLevel level) {
  71                 logger = new PrintStreamLogger();
  72                 for (LogLevel l : LogLevel.values()) {
  73                         if (l.atLeast(level)) {
  74                                 ((PrintStreamLogger) logger).setOutput(l, System.out);
  75                         }
  76                 }
  77
  78         }
  79
  80
  81         /**
  82          * Return the database of all thrust curves loaded into the system.
  83          */
  84         public static ThrustCurveMotorSetDatabase getMotorSetDatabase() {
  85                 return motorSetDatabase;
  86         }
  87
  88         /**
  89          * Set the database of thrust curves loaded into the system.
  90          */
  91         public static void setMotorSetDatabase(ThrustCurveMotorSetDatabase motorSetDatabase) {
  92                 Application.motorSetDatabase = motorSetDatabase;
  93         }
  94
  95
  96 }