Preparing for dynamic GUI extensibility.

Change-Id: Ic25143bb9ad8919d7c9e70d932dde528a9227e6a
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/MainExtResource.java b/web/gui/src/main/java/org/onosproject/ui/impl/MainExtResource.java
index a1eae41..1bf3d42 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/MainExtResource.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/MainExtResource.java
@@ -31,6 +31,7 @@
 
 import static com.google.common.collect.ImmutableList.of;
 import static com.google.common.io.ByteStreams.toByteArray;
+import static org.onosproject.ui.impl.MainViewResource.SCRIPT;
 
 /**
  * Resource for serving the dynamically composed onos.js.
@@ -38,30 +39,35 @@
 @Path("/")
 public class MainExtResource extends AbstractInjectionResource {
 
-    private static final String MAIN_JS = "/onos-template.js";
-    private static final String NAV_HTML = "/nav-template.html";
+    private static final String MAIN_JS = "templates/onos-template.js";
+    private static final String NAV_HTML = "templates/nav-template.html";
 
-    private static final String INJECT_VIEW_IDS = "// {INJECTED-VIEW-IDS}";
-    private static final String INJECT_VIEW_ITEMS = "<!-- {INJECTED-VIEW-NAV} -->";
+    private static final String INJECT_VIEW_IDS_START = "// {INJECTED-VIEW-IDS-START}";
+    private static final String INJECT_VIEW_IDS_END = "// {INJECTED-VIEW-IDS-END}";
+
+    private static final String INJECT_VIEW_ITEMS_START = "<!-- {INJECTED-VIEW-NAV-START} -->";
+    private static final String INJECT_VIEW_ITEMS_END = "<!-- {INJECTED-VIEW-NAV-END} -->";
+
 
     private static final String NAV_FORMAT =
             "    <li> <a ng-click=\"navCtrl.hideNav()\" href=\"#/%s\">%s</a></li>";
 
     @Path("/onos.js")
     @GET
-    @Produces(MediaType.TEXT_HTML)
+    @Produces(SCRIPT)
     public Response getMainModule() throws IOException {
         UiExtensionService service = get(UiExtensionService.class);
         InputStream jsTemplate = getClass().getClassLoader().getResourceAsStream(MAIN_JS);
         String js = new String(toByteArray(jsTemplate));
 
-        int p1 = split(js, 0, INJECT_VIEW_IDS);
-        int p2 = split(js, p1, null);
+        int p1s = split(js, 0, INJECT_VIEW_IDS_START);
+        int p1e = split(js, 0, INJECT_VIEW_IDS_END);
+        int p2s = split(js, p1e, null);
 
         StreamEnumeration streams =
-                new StreamEnumeration(of(stream(js, 0, p1),
+                new StreamEnumeration(of(stream(js, 0, p1s),
                                          includeViewIds(service),
-                                         stream(js, p1, p2)));
+                                         stream(js, p1e, p2s)));
 
         return Response.ok(new SequenceInputStream(streams)).build();
     }
@@ -85,13 +91,14 @@
         InputStream navTemplate = getClass().getClassLoader().getResourceAsStream(NAV_HTML);
         String js = new String(toByteArray(navTemplate));
 
-        int p1 = split(js, 0, INJECT_VIEW_ITEMS);
-        int p2 = split(js, p1, null);
+        int p1s = split(js, 0, INJECT_VIEW_ITEMS_START);
+        int p1e = split(js, 0, INJECT_VIEW_ITEMS_END);
+        int p2s = split(js, p1e, null);
 
         StreamEnumeration streams =
-                new StreamEnumeration(of(stream(js, 0, p1),
+                new StreamEnumeration(of(stream(js, 0, p1s),
                                          includeNavItems(service),
-                                         stream(js, p1, p2)));
+                                         stream(js, p1e, p2s)));
 
         return Response.ok(new SequenceInputStream(streams)).build();
     }
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/MainIndexResource.java b/web/gui/src/main/java/org/onosproject/ui/impl/MainIndexResource.java
index da4079f..5f4158d 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/MainIndexResource.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/MainIndexResource.java
@@ -37,12 +37,14 @@
 @Path("/")
 public class MainIndexResource extends AbstractInjectionResource {
 
-    private static final String INDEX = "/index-template.html";
+    private static final String INDEX = "templates/index-template.html";
 
-    private static final String INJECT_CSS = "<!-- {INJECTED-STYLESHEETS} -->";
-    private static final String INJECT_JS = "<!-- {INJECTED-JAVASCRIPT} -->";
+    private static final String INJECT_CSS_START = "<!-- {INJECTED-STYLESHEETS-START} -->";
+    private static final String INJECT_CSS_END = "<!-- {INJECTED-STYLESHEETS-END} -->";
 
-    @Path("/")
+    private static final String INJECT_JS_START = "<!-- {INJECTED-JAVASCRIPT-START} -->";
+    private static final String INJECT_JS_END = "<!-- {INJECTED-JAVASCRIPT-END} -->";
+
     @GET
     @Produces(MediaType.TEXT_HTML)
     public Response getMainIndex() throws IOException {
@@ -50,16 +52,18 @@
         InputStream indexTemplate = getClass().getClassLoader().getResourceAsStream(INDEX);
         String index = new String(toByteArray(indexTemplate));
 
-        int p1 = split(index, 0, INJECT_JS);
-        int p2 = split(index, p1, INJECT_CSS);
-        int p3 = split(index, p2, null);
+        int p1s = split(index, 0, INJECT_JS_START);
+        int p1e = split(index, p1s, INJECT_JS_END);
+        int p2s = split(index, p1e, INJECT_CSS_START);
+        int p2e = split(index, p2s, INJECT_CSS_END);
+        int p3s = split(index, p2e, null);
 
         StreamEnumeration streams =
-                new StreamEnumeration(of(stream(index, 0, p1),
+                new StreamEnumeration(of(stream(index, 0, p1s),
                                          includeJs(service),
-                                         stream(index, p1, p2),
+                                         stream(index, p1e, p2s),
                                          includeCss(service),
-                                         stream(index, p2, p3)));
+                                         stream(index, p2e, p3s)));
 
         return Response.ok(new SequenceInputStream(streams)).build();
     }
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/MainViewResource.java b/web/gui/src/main/java/org/onosproject/ui/impl/MainViewResource.java
index 26b5d8c..e5bb126 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/MainViewResource.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/MainViewResource.java
@@ -33,9 +33,9 @@
 @Path("/")
 public class MainViewResource extends AbstractInjectionResource {
 
-    private static final String CONTENT_TYPE = "Content-Type";
-    private static final String STYLESHEET = "text/css";
-    private static final String SCRIPT = "text/javascript";
+    static final String CONTENT_TYPE = "Content-Type";
+    static final String STYLESHEET = "text/css";
+    static final String SCRIPT = "text/javascript";
 
     @Path("{view}/{resource}")
     @GET
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/UiExtensionManager.java b/web/gui/src/main/java/org/onosproject/ui/impl/UiExtensionManager.java
index 6ca1e21..3604919 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/UiExtensionManager.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/UiExtensionManager.java
@@ -54,7 +54,8 @@
                                               new UiView("topo", "Topology View"),
                                               new UiView("device", "Devices"));
 
-    private final UiExtension core = new UiExtension(coreViews, getClass().getClassLoader());
+    private final UiExtension core = new UiExtension(coreViews, "core",
+                                                     getClass().getClassLoader());
 
     @Activate
     public void activate() {