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1   /*
2    * #%L
3    * wcm.io
4    * %%
5    * Copyright (C) 2019 wcm.io
6    * %%
7    * Licensed under the Apache License, Version 2.0 (the "License");
8    * you may not use this file except in compliance with the License.
9    * You may obtain a copy of the License at
10   *
11   *      http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   * #L%
19   */
20  package io.wcm.wcm.ui.granite.util;
21  
22  import org.apache.sling.api.SlingHttpServletRequest;
23  import org.jetbrains.annotations.NotNull;
24  import org.jetbrains.annotations.Nullable;
25  import org.osgi.annotation.versioning.ConsumerType;
26  
27  import com.adobe.granite.ui.components.ComponentHelper;
28  
29  /**
30   * Interface that can be implemented to provide custom logic to detect a root path
31   * from current context if there was no explicit root path configured for the GraniteUI component.
32   */
33  @ConsumerType
34  public interface RootPathDetector {
35  
36    /**
37     * Detect root path from context of GraniteUI component.
38     * @param cmp Granite UI Component Helper
39     * @param request Request
40     * @return Root path or null
41     */
42    @Nullable
43    String detectRootPath(@NotNull ComponentHelper cmp, @NotNull SlingHttpServletRequest request);
44  
45  }