1 files changed, 346 insertions, 0 deletions
diff --git a/src/main/java/events/VSRegisteredEvents.java b/src/main/java/events/VSRegisteredEvents.java
new file mode 100644
index 0000000..6d50ae5
--- /dev/null
+++ b/src/main/java/events/VSRegisteredEvents.java
@@ -0,0 +1,346 @@
+package events;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Set;
+import java.util.Vector;
+
+import core.VSInternalProcess;
+import prefs.VSPrefs;
+import utils.VSClassLoader;
+
+/**
+ * The class VSRegisteredEvents. This class is responsible to manage all
+ * events. It manages the event classnames, the event shortnames and the event
+ * names. It also checks if a protocol (which is an event as well) has
+ * variables which are editable through the GUI of the simulator.
+ *
+ * @author Paul C. Buetow
+ */
+public final class VSRegisteredEvents {
+    /** The event classnames by eventnames. */
+    private static HashMap<String,String> eventClassnamesByNames =
+        new HashMap<String,String>();
+
+    /** The event shortnames by classnames. */
+    private static HashMap<String,String> eventShortnamesByClassnames =
+        new HashMap<String,String>();
+
+    /** The event names by classnames. */
+    private static HashMap<String,String> eventNamesByClassnames =
+        new HashMap<String,String>();
+
+    /** The event classnames by shortnames. */
+    private static HashMap<String,String> eventClassnamesByShortnames =
+        new HashMap<String,String>();
+
+    /** The editable protocols classnames. */
+    private static ArrayList<String> editableProtocolsClassnames =
+        new ArrayList<String>();
+
+    private static HashMap<String,ArrayList<String>> clientVariables =
+        new HashMap<String,ArrayList<String>>();
+
+    private static HashMap<String,ArrayList<String>> serverVariables =
+        new HashMap<String,ArrayList<String>>();
+
+    private static HashMap<String,Boolean> isOnServerStartProtocol =
+        new HashMap<String,Boolean>();
+
+    /** The prefs. */
+    private static VSPrefs prefs;
+
+    /**
+     * Registers available events.
+     *
+     * @param prefs_ the prefs_
+     */
+    public static void init(VSPrefs prefs_) {
+        prefs = prefs_;
+        registerEvent("events.implementations.VSProcessCrashEvent");
+        registerEvent("events.implementations.VSProcessRecoverEvent");
+        registerEvent("protocols.implementations.VSBasicMulticastProtocol");
+        registerEvent("protocols.implementations.VSBerkelyTimeProtocol");
+        registerEvent("protocols.implementations.VSBroadcastProtocol");
+        registerEvent("protocols.implementations.VSDummyProtocol");
+        registerEvent("protocols.implementations.VSExternalTimeSyncProtocol");
+        registerEvent("protocols.implementations.VSInternalTimeSyncProtocol");
+        registerEvent("protocols.implementations.VSOnePhaseCommitProtocol");
+        registerEvent("protocols.implementations.VSPingPongProtocol");
+        registerEvent("protocols.implementations.VSReliableMulticastProtocol");
+        registerEvent("protocols.implementations.VSTwoPhaseCommitProtocol");
+
+        /* Make dummy objects of each protocol, to see if they contain VSPrefs
+           values to edit */
+        Vector<String> protocolClassnames = getProtocolClassnames();
+        VSClassLoader classLoader = new VSClassLoader();
+
+        for (String protocolClassname : protocolClassnames) {
+            Object serverObject = classLoader.newInstance(protocolClassname);
+            Object clientObject = classLoader.newInstance(protocolClassname);
+
+            if (clientObject instanceof protocols.VSAbstractProtocol &&
+                    serverObject instanceof protocols.VSAbstractProtocol) {
+
+                protocols.VSAbstractProtocol serverProtocol =
+                    (protocols.VSAbstractProtocol) serverObject;
+                protocols.VSAbstractProtocol clientProtocol =
+                    (protocols.VSAbstractProtocol) clientObject;
+
+                serverProtocol.onServerInit();
+                clientProtocol.onClientInit();
+
+                if (!serverProtocol.isEmpty() || !clientProtocol.isEmpty())
+                    editableProtocolsClassnames.add(protocolClassname);
+
+                if (!serverProtocol.isEmpty()) {
+                    ArrayList<String> variables = new ArrayList<String>();
+                    variables.addAll(serverProtocol.getAllFullKeys());
+                    serverVariables.put(protocolClassname, variables);
+                }
+
+                if (!clientProtocol.isEmpty()) {
+                    ArrayList<String> variables = new ArrayList<String>();
+                    variables.addAll(clientProtocol.getAllFullKeys());
+                    clientVariables.put(protocolClassname, variables);
+                }
+
+                if (serverProtocol.hasOnServerStart())
+                    isOnServerStartProtocol.put(protocolClassname,
+                                                Boolean.valueOf(true));
+            }
+        }
+    }
+
+    /**
+     * Gets the editable protocols classnames.
+     *
+     * @return the editable protocols classnames
+     */
+    public static ArrayList<String> getEditableProtocolsClassnames() {
+        return editableProtocolsClassnames;
+    }
+
+    /**
+     * Gets the protocols server variable names.
+     *
+     * @return The variable names
+     */
+    public static ArrayList<String> getProtocolServerVariables(
+        String protocolClassname) {
+        return serverVariables.get(protocolClassname);
+    }
+
+    /**
+     * Gets the protocols server variable names.
+     *
+     * @return The variable names
+     */
+    public static ArrayList<String> getProtocolClientVariables(
+        String protocolClassname) {
+        return clientVariables.get(protocolClassname);
+    }
+
+    /**
+     * Gets the protocol names.
+     *
+     * @return the protocol names
+     */
+    public static Vector<String> getProtocolNames() {
+        Set<String> set =  eventClassnamesByNames.keySet();
+        Vector<String> vector = new Vector<String>();
+
+        for (String eventName : set)
+            if (getClassnameByEventname(eventName).startsWith(
+                        "protocols.implementations"))
+                vector.add(eventName);
+
+        Collections.sort(vector);
+
+        return vector;
+    }
+
+    /**
+     * Gets the protocol classnames.
+     *
+     * @return the protocol classnames
+     */
+    public static Vector<String> getProtocolClassnames() {
+        ArrayList<String> shortnames = new ArrayList<String>();
+        shortnames.addAll(eventClassnamesByShortnames.keySet());
+        Collections.sort(shortnames);
+        Vector<String> vector = new Vector<String>();
+
+        for (String eventShortname : shortnames) {
+            String eventClassname = getClassnameByShortname(eventShortname);
+            if (eventClassname.startsWith("protocols.implementations"))
+                vector.add(eventClassname);
+        }
+
+        return vector;
+    }
+
+    /**
+     * Gets the non protocol names.
+     *
+     * @return the non protocol names
+     */
+    public static Vector<String> getNonProtocolNames() {
+        Set<String> set =  eventClassnamesByNames.keySet();
+        Vector<String> vector = new Vector<String>();
+
+        for (String eventName : set)
+            if (getClassnameByEventname(eventName).startsWith(
+                        "events.implementations"))
+                vector.add(eventName);
+
+        Collections.sort(vector);
+
+        return vector;
+    }
+
+    /**
+     * Gets the non protocol classnames.
+     *
+     * @return the non protocol classnames
+     */
+    public static Vector<String> getNonProtocolClassnames() {
+        Set<String> set =  eventNamesByClassnames.keySet();
+        Vector<String> vector = new Vector<String>();
+
+        for (String eventClassname : set)
+            if (eventClassname.startsWith("events.implementations"))
+                vector.add(eventClassname);
+
+        Collections.sort(vector);
+
+        return vector;
+    }
+
+    /**
+     * Gets the classname.
+     *
+     * @param eventName the event name
+     *
+     * @return the classname
+     */
+    public static String getClassnameByEventname(String eventName) {
+        return eventClassnamesByNames.get(eventName);
+    }
+
+    /**
+     * Gets the name.
+     *
+     * @param eventClassname the event classname
+     *
+     * @return the name
+     */
+    public static String getNameByClassname(String eventClassname) {
+        return eventNamesByClassnames.get(eventClassname);
+    }
+
+    /**
+     * Gets the shortname.
+     *
+     * @param eventClassname the event classname
+     *
+     * @return the shortname
+     */
+    public static String getShortnameByClassname(String eventClassname) {
+        return eventShortnamesByClassnames.get(eventClassname);
+    }
+
+    /**
+     * Gets the classname.
+     *
+     * @param eventShortname the event shortname
+     *
+     * @return the shortname
+     */
+    public static String getClassnameByShortname(String eventShortname) {
+        return eventClassnamesByShortnames.get(eventShortname);
+    }
+
+    /**
+     * Checks if the protocol uses onServerStart or onClientStart
+     *
+     * @param protocolClassname the protocol's classname
+     *
+     * @return true if onServerStart, false if onClientStart
+     */
+    public static boolean isOnServerStartProtocol(String protocolClassname) {
+        if (isOnServerStartProtocol.containsKey(protocolClassname)) {
+            Boolean bool = isOnServerStartProtocol.get(protocolClassname);
+            return bool.booleanValue();
+        }
+
+        return false;
+    }
+
+    /**
+     * Creates the event instance by classname.
+     *
+     * @param eventClassname the event classname
+     * @param process the process
+     *
+     * @return An instance of the event classname, if exists. Else null.
+     */
+    public static VSAbstractEvent createEventInstanceByClassname(
+        String eventClassname, VSInternalProcess process) {
+        Object protocolObj = new VSClassLoader().newInstance(eventClassname);
+
+        if (protocolObj instanceof VSAbstractEvent) {
+            VSAbstractEvent event = (VSAbstractEvent) protocolObj;
+            event.init(process);
+            return event;
+        }
+
+        return null;
+    }
+
+    /**
+     * Creates the event instance by name.
+     *
+     * @param eventName the event name
+     * @param process the process
+     *
+     * @return An instance of the event, if exists. Else null.
+     */
+    public static VSAbstractEvent createEventInstanceByName(String eventName,
+            VSInternalProcess process) {
+        return createEventInstanceByClassname(
+                   eventClassnamesByNames.get(eventName), process);
+    }
+
+    /**
+     * Registers an event. Use the language settings of VSPrefs.
+     *
+     * @param eventClassname the event classname
+     */
+    private static void registerEvent(String eventClassname) {
+        String eventName =
+            prefs.getString("lang." + eventClassname);
+        String eventShortname =
+            prefs.getString("lang." + eventClassname + ".short");
+        registerEvent(eventClassname, eventName, eventShortname);
+    }
+
+    /**
+     * Registers an event.
+     *
+     * @param eventClassname the event classname
+     * @param eventName the event name
+     * @param eventShortname the event shortname
+     */
+    private static void registerEvent(String eventClassname, String eventName,
+                                      String eventShortname) {
+        if (eventShortname == null)
+            eventShortname = eventName;
+
+        eventNamesByClassnames.put(eventClassname, eventName);
+        eventShortnamesByClassnames.put(eventClassname, eventShortname);
+        eventClassnamesByNames.put(eventName, eventClassname);
+        eventClassnamesByShortnames.put(eventShortname, eventClassname);
+    }
+}