From f3c3269342b994d763bf6aba0fbf786cfa3428de Mon Sep 17 00:00:00 2001
From: Jamie Doornbos <jamie@threerings.net>
Date: Thu, 4 Jun 2009 05:37:45 +0000
Subject: [PATCH] Optionally generate action script listener adapters for
 designated services.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5814 542714f4-19e9-0310-aa3c-eee0fc999fb1
---
 .../presents/tools/GenServiceTask.java        | 35 ++++++++++-
 .../tools/service_listener_adapter_as.tmpl    | 60 +++++++++++++++++++
 2 files changed, 92 insertions(+), 3 deletions(-)
 create mode 100644 src/java/com/threerings/presents/tools/service_listener_adapter_as.tmpl

diff --git a/src/java/com/threerings/presents/tools/GenServiceTask.java b/src/java/com/threerings/presents/tools/GenServiceTask.java
index e0e0543d8..21577e1a1 100644
--- a/src/java/com/threerings/presents/tools/GenServiceTask.java
+++ b/src/java/com/threerings/presents/tools/GenServiceTask.java
@@ -143,6 +143,15 @@ public class GenServiceTask extends InvocationTask
         }
     }
 
+    /** Used to track services for which we should create listener adapters in actionscript. */
+    public class Adapter
+    {
+        public void setService (String className)
+        {
+            _aslistenerAdapters.add(className);
+        }
+    }
+
     /**
      * Configures the path to our ActionScript source files.
      */
@@ -151,12 +160,16 @@ public class GenServiceTask extends InvocationTask
         _asroot = asroot;
     }
 
-    // documentation inherited
     public Providerless createProviderless ()
     {
         return new Providerless();
     }
 
+    public Adapter createAdapter ()
+    {
+        return new Adapter();
+    }
+
     // documentation inherited
     @Override
     protected void processService (File source, Class<?> service)
@@ -454,10 +467,19 @@ public class GenServiceTask extends InvocationTask
 
                 sw = new StringWriter();
                 _velocity.mergeTemplate(AS_LISTENER_SERVICE_TMPL, "UTF-8", ctx, sw);
-                String amlpath = _asroot + File.separator + sppath +
+                String aslpath = _asroot + File.separator + sppath +
                     File.separator + sname + "_" +
                     listener.getName() + "Listener.as";
-                writeFile(amlpath, sw.toString());
+                writeFile(aslpath, sw.toString());
+
+                if (_aslistenerAdapters.contains(sname)) {
+                    sw = new StringWriter();
+                    _velocity.mergeTemplate(AS_LISTENER_ADAPTER_SERVICE_TMPL, "UTF-8", ctx, sw);
+                    String aslapath = _asroot + File.separator + sppath +
+                        File.separator + sname + "_" +
+                        listener.getName() + "ListenerAdapter.as";
+                    writeFile(aslapath, sw.toString());
+                }
             }
 
         } catch (Exception e) {
@@ -679,6 +701,9 @@ public class GenServiceTask extends InvocationTask
     /** Services for which we should not generate provider interfaces. */
     protected HashSet<String> _providerless = Sets.newHashSet();
 
+    /** Services for which we should generate actionscript listener adapters. */
+    protected HashSet<String> _aslistenerAdapters = Sets.newHashSet();
+
     /** Specifies the path to the marshaller template. */
     protected static final String MARSHALLER_TMPL =
         "com/threerings/presents/tools/marshaller.tmpl";
@@ -699,6 +724,10 @@ public class GenServiceTask extends InvocationTask
     protected static final String AS_LISTENER_SERVICE_TMPL =
         "com/threerings/presents/tools/service_listener_as.tmpl";
 
+    /** Specifies the path to the ActionScript listener adapter service template. */
+    protected static final String AS_LISTENER_ADAPTER_SERVICE_TMPL =
+        "com/threerings/presents/tools/service_listener_adapter_as.tmpl";
+
     /** Specifies the path to the ActionScript marshaller template. */
     protected static final String AS_MARSHALLER_TMPL =
         "com/threerings/presents/tools/marshaller_as.tmpl";
diff --git a/src/java/com/threerings/presents/tools/service_listener_adapter_as.tmpl b/src/java/com/threerings/presents/tools/service_listener_adapter_as.tmpl
new file mode 100644
index 000000000..df6247a27
--- /dev/null
+++ b/src/java/com/threerings/presents/tools/service_listener_adapter_as.tmpl
@@ -0,0 +1,60 @@
+package $package {
+
+#foreach ($import in $imports)
+import $import;
+#end
+
+/**
+ * A functional adapter for the ${name}Service_${listener.name}Listener interface.
+ */
+public class ${name}Service_${listener.name}ListenerAdapter
+    implements ${name}Service_${listener.name}Listener
+{
+#set ($cparams = "")
+#foreach ($lm in $listener.methods)
+#set ($cparams = $cparams + "$lm.method.name :Function, ")
+#end
+    /**
+     * Creates a new $name service $listener.name listener that will delegate to the given
+     * function(s). Any Function that is null will simply not be called.
+     */
+    public function ${name}Service_${listener.name}ListenerAdapter (
+        ${cparams}failed :Function)
+    {
+#foreach ($lm in $listener.methods)
+        _$lm.method.name = $lm.method.name;
+#end
+        _failed = failed;
+    }
+#foreach ($lm in $listener.methods)
+
+    // from Java ${name}Service_${listener.name}Listener
+    public function $lm.method.name ($lm.getASArgList(false)) :void
+    {
+#set ($alist = "")
+#foreach ($type in $lm.method.getParameterTypes())
+#if ($velocityCount > 1)
+#set ($alist = $alist + ", ")
+#end
+#set ($alist = $alist + "arg$velocityCount")
+#end
+        if (_$lm.method.name != null) {
+            _${lm.method.name}($alist);
+        }
+    }
+#end
+
+    // from InvocationService_InvocationListener
+    public function requestFailed (cause :String) :void
+    {
+        if (_failed != null) {
+            _failed(cause);
+        }
+    }
+
+#foreach ($lm in $listener.methods)
+    protected var _$lm.method.name :Function;
+#end
+    protected var _failed :Function;
+}
+}