| /* |
| * 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.rest.AbstractInjectionResource; |
| 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 java.util.ArrayList; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| 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 HDR_FORMAT = |
| "<div class=\"nav-hdr\">%s</div>\n"; |
| private static final String NAV_FORMAT = |
| "<a ng-click=\"navCtrl.hideNav()\" href=\"#/%s\">%s %s</a>\n"; |
| |
| private static final String BLANK_GLYPH = "unknown"; |
| |
| @GET |
| @Produces(MediaType.TEXT_HTML) |
| public Response getNavigation() throws IOException { |
| UiExtensionService service = get(UiExtensionService.class); |
| InputStream navTemplate = |
| getClass().getClassLoader().getResourceAsStream(NAV_HTML); |
| String html = new String(toByteArray(navTemplate)); |
| |
| int p1s = split(html, 0, INJECT_VIEW_ITEMS_START); |
| int p1e = split(html, 0, INJECT_VIEW_ITEMS_END); |
| int p2s = split(html, p1e, null); |
| |
| StreamEnumeration streams = |
| new StreamEnumeration(of(stream(html, 0, p1s), |
| includeNavItems(service), |
| stream(html, p1e, p2s))); |
| |
| return Response.ok(new SequenceInputStream(streams)).build(); |
| } |
| |
| // Produces an input stream of nav item injections from all extensions. |
| private InputStream includeNavItems(UiExtensionService service) { |
| List<UiExtension> extensions = service.getExtensions(); |
| StringBuilder sb = new StringBuilder("\n"); |
| |
| for (UiView.Category cat : UiView.Category.values()) { |
| if (cat == UiView.Category.HIDDEN) { |
| continue; |
| } |
| |
| List<UiView> catViews = getViewsForCat(extensions, cat); |
| if (!catViews.isEmpty()) { |
| addCatHeader(sb, cat); |
| addCatItems(sb, catViews); |
| } |
| } |
| |
| return new ByteArrayInputStream(sb.toString().getBytes()); |
| } |
| |
| private List<UiView> getViewsForCat(List<UiExtension> extensions, |
| UiView.Category cat) { |
| List<UiView> views = new ArrayList<>(); |
| for (UiExtension extension : extensions) { |
| views.addAll(extension.views().stream().filter( |
| view -> cat.equals(view.category()) |
| ).collect(Collectors.toList())); |
| } |
| return views; |
| } |
| |
| private void addCatHeader(StringBuilder sb, UiView.Category cat) { |
| sb.append(String.format(HDR_FORMAT, cat.label())); |
| } |
| |
| private void addCatItems(StringBuilder sb, List<UiView> catViews) { |
| for (UiView view : catViews) { |
| sb.append(String.format(NAV_FORMAT, view.id(), icon(view), view.label())); |
| } |
| } |
| |
| private String icon(UiView view) { |
| String gid = view.iconId() == null ? BLANK_GLYPH : view.iconId(); |
| return "<div icon icon-id=\"" + gid + "\"></div>"; |
| } |
| } |