Add a new LaunchHandler to show error messages when starting applications

This LaunchHandler is only used when not running in headless mode. This
launchHandler is also responsible for showing the splash screen.

2011-03-30  Omair Majid  <[email protected]>

    * netx/net/sourceforge/jnlp/LaunchHandler.java
    (launchInitialized, launchStarting): New methods.
    * netx/net/sourceforge/jnlp/DefaultLaunchHandler.java
    (launchInitialized, launchStarting): New methods. No-op
    implementation.
    (printMessage): Make it static.
    * netx/net/sourceforge/jnlp/GuiLaunchHandler.java: New file.
    (launchCompleted, launchError, launchStarting, launchInitialized),
    (launchWarning, validationError): New methods.
    * netx/net/sourceforge/jnlp/Launcher.java (launchApplication):
    Invoke handler.launchInitialized and handler.launchStarting instead
    of showing a splash screen directly.
    * netx/net/sourceforge/jnlp/resources/Messages.properties: Add
    ButShowDetails, ButHideDetails and Error.
    * netx/net/sourceforge/jnlp/runtime/Boot.java (run): Do not exit on
    error.
    * netx/net/sourceforge/jnlp/runtime/JNLPRuntime.java
    (initialize): Set handler to GuiLaunchHandler if not running in
    headless mode.
    * netx/net/sourceforge/jnlp/util/BasicExceptionDialog.java: New
    file.
    (exceptionToString, show): New methods.

1 files changed, 18 insertions, 0 deletions

diff --git a/netx/net/sourceforge/jnlp/LaunchHandler.java b/netx/net/sourceforge/jnlp/LaunchHandler.java
index a0b106b..f12dcf6 100644
--- a/netx/net/sourceforge/jnlp/LaunchHandler.java
+++ b/netx/net/sourceforge/jnlp/LaunchHandler.java
@@ -56,6 +56,24 @@ public interface LaunchHandler {
     // controller is in place.
 
     /**
+     * Called when an application, applet or installer has been determined.
+     * We have some very basic information about the application at this point,
+     * but do not have everything required. This is a nice point to show the
+     * splash screen.
+     *
+     * @param application the application instance that is starting
+     */
+    public void launchInitialized(JNLPFile file);
+
+    /**
+     * Called when an application, applet or installer is ready to start.
+     * Good point to hide the splash screen.
+     *
+     * @param application the application instance that is ready
+     */
+    public void launchStarting(ApplicationInstance application);
+
+    /**
      * Called when an application, applet, or installer has been
      * launched successfully (the main method or applet start method
      * returned normally).