Adding support for user interface extensions.
Change-Id: I1e41d16efc11be31ad4c2fb0c09e86e3dfd26706
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
new file mode 100644
index 0000000..a1eae41
--- /dev/null
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/MainExtResource.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.ui.impl;
+
+import org.onosproject.ui.UiExtension;
+import org.onosproject.ui.UiExtensionService;
+import org.onosproject.ui.UiView;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.SequenceInputStream;
+
+import static com.google.common.collect.ImmutableList.of;
+import static com.google.common.io.ByteStreams.toByteArray;
+
+/**
+ * Resource for serving the dynamically composed onos.js.
+ */
+@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 INJECT_VIEW_IDS = "// {INJECTED-VIEW-IDS}";
+ private static final String INJECT_VIEW_ITEMS = "<!-- {INJECTED-VIEW-NAV} -->";
+
+ 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)
+ 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);
+
+ StreamEnumeration streams =
+ new StreamEnumeration(of(stream(js, 0, p1),
+ includeViewIds(service),
+ stream(js, p1, p2)));
+
+ return Response.ok(new SequenceInputStream(streams)).build();
+ }
+
+ // Produces an input stream including view id injections from all extensions.
+ private InputStream includeViewIds(UiExtensionService service) {
+ StringBuilder sb = new StringBuilder("\n");
+ for (UiExtension extension : service.getExtensions()) {
+ for (UiView view : extension.views()) {
+ sb.append(" '").append(view.id()).append("',");
+ }
+ }
+ return new ByteArrayInputStream(sb.toString().getBytes());
+ }
+
+ @Path("/nav/nav.html")
+ @GET
+ @Produces(MediaType.TEXT_HTML)
+ public Response getNavigation() throws IOException {
+ UiExtensionService service = get(UiExtensionService.class);
+ 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);
+
+ StreamEnumeration streams =
+ new StreamEnumeration(of(stream(js, 0, p1),
+ includeNavItems(service),
+ stream(js, p1, p2)));
+
+ return Response.ok(new SequenceInputStream(streams)).build();
+ }
+
+ // Produces an input stream including nav item injections from all extensions.
+ private InputStream includeNavItems(UiExtensionService service) {
+ StringBuilder sb = new StringBuilder("\n");
+ for (UiExtension extension : service.getExtensions()) {
+ for (UiView view : extension.views()) {
+ sb.append(String.format(NAV_FORMAT, view.id(), view.label()));
+ }
+ }
+ return new ByteArrayInputStream(sb.toString().getBytes());
+ }
+}