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/*
* Copyright (C) 2018 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.systemui.dock;
/**
* Allows an app to handle dock events.
*/
public interface DockManager {
/**
* Uninitialized / undocking dock states.
*/
int STATE_NONE = 0;
/**
* The state for docking
*/
int STATE_DOCKED = 1;
/**
* The state for docking without showing UI.
*/
int STATE_DOCKED_HIDE = 2;
/**
* Indicates there's no alignment info. This could happen when the device is unable to decide
* its alignment condition.
*/
int ALIGN_STATE_UNKNOWN = -1;
/**
* Indicates there's no alignment issue.
*/
int ALIGN_STATE_GOOD = 0;
/**
* Indicates it's slightly not aligned with dock.
*/
int ALIGN_STATE_POOR = 1;
/**
* Indicates it's not aligned with dock.
*/
int ALIGN_STATE_TERRIBLE = 2;
/**
* Adds a dock event listener into manager.
*
* @param callback A {@link DockEventListener} which want to add
*/
void addListener(DockEventListener callback);
/**
* Removes the added listener from dock manager
*
* @param callback A {@link DockEventListener} which want to remove
*/
void removeListener(DockEventListener callback);
/**
* Adds a alignment listener into manager.
*
* @param listener A {@link AlignmentStateListener} which want to add
*/
void addAlignmentStateListener(AlignmentStateListener listener);
/**
* Removes the added alignment listener from dock manager.
*
* @param listener A {@link AlignmentStateListener} which want to remove
*/
void removeAlignmentStateListener(AlignmentStateListener listener);
/**
* Returns true if the device is in docking state.
*/
boolean isDocked();
/**
* Returns true if it is hiding docking UI.
*/
boolean isHidden();
/**
* Listens to dock events.
*/
interface DockEventListener {
/**
* Override to handle dock events.
*/
void onEvent(int event);
}
/**
* Listens to dock alignment state changed.
*/
interface AlignmentStateListener {
/**
* Override to handle alignment state changes.
*/
void onAlignmentStateChanged(int alignState);
}
}
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