| /* |
| * 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 nav.html. |
| */ |
| @Path("/") |
| public class MainNavResource extends AbstractInjectionResource { |
| |
| private static final String NAV_HTML = "nav.html"; |
| |
| 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 = |
| "<a ng-click=\"navCtrl.hideNav()\" href=\"#/%s\">%s</a>\n"; |
| |
| @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 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, p1s), |
| includeNavItems(service), |
| stream(js, p1e, p2s))); |
| |
| 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()); |
| } |
| } |