UrlMode.java

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 * wcm.io
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 * Copyright (C) 2014 wcm.io
 * %%
 * 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
 *
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package io.wcm.handler.url;

import java.util.Set;

import org.apache.sling.api.adapter.Adaptable;
import org.apache.sling.api.resource.Resource;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.osgi.annotation.versioning.ProviderType;

import com.day.cq.wcm.api.Page;

import io.wcm.handler.url.spi.UrlHandlerConfig;

/**
 * An UrlMode define the externalization logic for URLs depending on context-specific configuration parameters
 * defined in {@link SiteConfig}.
 *
 * <p>
 * If you want to implement your own UrlMode you can create a singleton class extending this interface. See
 * {@link UrlModes} class as an example.
 * </p>
 */
@ProviderType
public interface UrlMode {

  /**
   * Gets the URL mode ID.
   * @return Id uniquely identifying the URL mode
   */
  @NotNull
  String getId();

  /**
   * Get prefix (scheme, hostname and context path or integrator placeholder) for externalizing a content page link URL.
   * @param adaptable Either request or resource which can be adapted to model implementations like
   *          {@link UrlHandlerConfig}
   * @param runModes Current sling run modes
   * @param currentPage Current page (is null if not executed in request context)
   * @param targetPage Target page to which internal link points to.
   * @return Prefix or null
   */
  @Nullable
  String getLinkUrlPrefix(@NotNull Adaptable adaptable, @NotNull Set<String> runModes,
      @Nullable Page currentPage, @Nullable Page targetPage);

  /**
   * Get prefix (scheme, hostname and context path or integrator placeholder) for externalizing a resource URL.
   * @param adaptable Either request or resource which can be adapted to model implementations like
   *          {@link UrlHandlerConfig}
   * @param runModes Current sling run modes
   * @param currentPage Current page (is null if not executed in request context)
   * @param targetResource Target resource to which the resource link points to
   *          (may be null if it could not be resolved)
   * @return Prefix or null
   */
  @Nullable
  String getResourceUrlPrefix(@NotNull Adaptable adaptable, @NotNull Set<String> runModes,
      @Nullable Page currentPage, @Nullable Resource targetResource);

  /**
   * Forces protocol and hostname to be stripped from URLs even is relying to hostnames provided by Sling Mapping.
   * @return true if host name should always be stripped
   */
  default boolean isForceStripHostName() {
    return false;
  }

}