src/com/android/quicksearchbox/ui/SuggestionViewFactory.kt

/*
 * Copyright (C) 2022 The Android Open Source Project
 *
 * 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 com.android.quicksearchbox.ui

import android.view.View
import android.view.ViewGroup
import com.android.quicksearchbox.Suggestion
import com.android.quicksearchbox.SuggestionCursor

/** Factory interface for suggestion views. */
interface SuggestionViewFactory {
  /**
   * Returns all the view types that are used by this factory. Each view type corresponds to a
   * specific layout that is used to display suggestions. The returned set must have at least one
   * item in it.
   *
   * View types must be unique across all suggestion view factories.
   */
  val suggestionViewTypes: Collection<String>

  /**
   * Returns the view type to be used for displaying the given suggestion. This MUST correspond to
   * one of the view types returned by [.getSuggestionViewTypes].
   */
  fun getViewType(suggestion: Suggestion?): String?

  /**
   * Gets a view corresponding to the current suggestion in the given cursor.
   *
   * @param convertView The old view to reuse, if possible. Note: You should check that this view is
   * non-null and of an appropriate type before using. If it is not possible to convert this view to
   * display the correct data, this method can create a new view.
   * @param parent The parent that this view will eventually be attached to
   * @return A View corresponding to the data within this suggestion.
   */
  fun getView(
    suggestion: SuggestionCursor?,
    userQuery: String?,
    convertView: View?,
    parent: ViewGroup?
  ): View?

  /** Checks whether this factory can create views for the given suggestion. */
  fun canCreateView(suggestion: Suggestion?): Boolean
}