    001// Copyright 2023 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007//     http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.corelib.pages;
    016
    017import java.util.Set;
    018import java.util.stream.Collectors;
    019
    020import org.apache.tapestry5.annotations.UnknownActivationContextCheck;
    021import org.apache.tapestry5.annotations.WhitelistAccessOnly;
    022import org.apache.tapestry5.internal.services.ComponentDependencyGraphvizGenerator;
    023import org.apache.tapestry5.internal.services.ComponentDependencyRegistry;
    024import org.apache.tapestry5.ioc.annotations.Inject;
    025
    026/**
    027 * Shows graph showing the dependencies of all already loaded pages and its compnoents, mixins and base classes.
    028 */
    029@UnknownActivationContextCheck(false)
    030@WhitelistAccessOnly
    031public class PageDependencyGraph
    032{
    033
    034    @Inject
    035    private ComponentDependencyGraphvizGenerator componentDependencyGraphvizGenerator;
    036
    037    @Inject
    038    private ComponentDependencyRegistry componentDependencyRegistry;
    039
    040    public String getGraphvizValue()
    041    {
    042        final Set<String> pages = componentDependencyRegistry.getClassNames().stream()
    043                .filter(c -> c.contains(".pages"))
    044                .collect(Collectors.toSet());
    045        return componentDependencyGraphvizGenerator.generate(pages.toArray(new String[pages.size()]));
    046    }
    047
    048}