/**
 * Copyright (c) 2016, 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 android.view;

import android.content.pm.ParceledListSlice;
import android.graphics.Rect;
import android.view.IPinnedStackController;

/**
 * Listener for changes to the pinned stack made by the WindowManager.
 *
 * @hide
 */
oneway interface IPinnedStackListener {

    /**
     * Called when the listener is registered and provides an interface to call back to the pinned
     * stack controller to update the controller of the pinned stack state.
     */
    void onListenerRegistered(IPinnedStackController controller);

    /**
     * Called when the window manager has detected a change that would cause the movement bounds
     * to be changed (ie. after configuration change, aspect ratio change, etc). It then provides
     * the components that allow the listener to calculate the movement bounds itself. The
     * {@param normalBounds} are also the default bounds that the PiP would be entered in its
     * current state with the aspect ratio applied.  The {@param animatingBounds} are provided
     * to indicate the current target bounds of the pinned stack (the final bounds if animating,
     * the current bounds if not), which may be helpful in calculating dependent animation bounds.
     *
     * The {@param displayRotation} is provided so that the client can verify when making certain
     * calls that it will not provide stale information based on an old display rotation (ie. if
     * the WM has changed in the mean time but the client has not received onMovementBoundsChanged).
     */
    void onMovementBoundsChanged(in Rect insetBounds, in Rect normalBounds, in Rect animatingBounds,
            boolean fromImeAdjustment, boolean fromShelfAdjustment, int displayRotation);

    /**
     * Called when window manager decides to adjust the pinned stack bounds because of the IME, or
     * when the listener is first registered to allow the listener to synchronized its state with
     * the controller.  This call will always be followed by a onMovementBoundsChanged() call
     * with fromImeAdjustement set to {@code true}.
     */
    void onImeVisibilityChanged(boolean imeVisible, int imeHeight);

    /**
     * Called when window manager decides to adjust the pinned stack bounds because of the shelf, or
     * when the listener is first registered to allow the listener to synchronized its state with
     * the controller.  This call will always be followed by a onMovementBoundsChanged() call
     * with fromShelfAdjustment set to {@code true}.
     */
    void onShelfVisibilityChanged(boolean shelfVisible, int shelfHeight);

    /**
     * Called when window manager decides to adjust the minimized state, or when the listener
     * is first registered to allow the listener to synchronized its state with the controller.
     */
    void onMinimizedStateChanged(boolean isMinimized);

    /**
     * Called when the set of actions for the current PiP activity changes, or when the listener
     * is first registered to allow the listener to synchronized its state with the controller.
     */
    void onActionsChanged(in ParceledListSlice actions);
}