mirror of https://github.com/YTVanced/VancedMicroG
186 lines
8.8 KiB
Java
186 lines
8.8 KiB
Java
/*
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* Copyright 2013-2016 microG Project Team
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.gms.wearable;
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import com.google.android.gms.common.api.GoogleApiClient;
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import com.google.android.gms.common.api.GoogleApiClient.Builder;
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import com.google.android.gms.common.api.PendingResult;
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import com.google.android.gms.common.api.Result;
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import com.google.android.gms.common.api.Status;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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/**
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* Client interface for Wearable Channel API. Allows apps on a wearable device to send and receive
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* data from other wearable nodes.
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* <p/>
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* Channels are bidirectional. Each side, both the initiator and the receiver may both read and
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* write to the channel by using {@link Channel#getOutputStream(GoogleApiClient)} and {@link Channel#getInputStream(GoogleApiClient)}.
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* Once a channel is established, the API for the initiator and receiver are identical.
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* <p/>
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* Channels are only available when the wearable nodes are connected. When the remote node
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* disconnects, all existing channels will be closed. Any listeners (added through {@link #addListener(GoogleApiClient, ChannelListener)}
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* and any installed {@link WearableListenerService}) will be notified of the channel closing.
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*/
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public interface ChannelApi {
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/**
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* Channel action for use in listener filters.
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*
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* @see WearableListenerService
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*/
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String ACTION_CHANNEL_EVENT = "com.google.android.gms.wearable.CHANNEL_EVENT";
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/**
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* Registers a listener to be notified of channel events. Calls to this method should be
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* balanced with calls to {@link #removeListener(GoogleApiClient, ChannelListener)} to avoid
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* leaking resources.
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* <p/>
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* Listener events will be called on the main thread, or the handler specified on {@code client}
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* when it was built (using {@link Builder#setHandler(Handler)}).
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* <p/>
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* Callers wishing to be notified of events in the background should use {@link WearableListenerService}.
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*
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* @param client a connected client
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* @param listener a listener which will be notified of changes to any channel
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*/
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PendingResult<Status> addListener(GoogleApiClient client, ChannelListener listener);
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/**
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* Opens a channel to exchange data with a remote node.
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* <p/>
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* Channel which are no longer needed should be closed using {@link Channel#close(GoogleApiClient)}.
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* <p/>
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* This call involves a network round trip, so may be long running. {@code client} must remain
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* connected during that time, or the request will be cancelled (like any other Play Services
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* API calls).
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*
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* @param client a connected client
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* @param nodeId the node ID of a wearable node, as returned from {@link NodeApi#getConnectedNodes(GoogleApiClient)}
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* @param path an app-specific identifier for the channel
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*/
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PendingResult<OpenChannelResult> openChannel(GoogleApiClient client, String nodeId, String path);
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/**
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* Removes a listener which was previously added through {@link #addListener(GoogleApiClient, ChannelListener)}.
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*
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* @param client a connected client
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* @param listener a listener which was added using {@link #addListener(GoogleApiClient, ChannelListener)}
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*/
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PendingResult<Status> removeListener(GoogleApiClient client, ChannelListener listener);
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/**
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* A listener which will be notified on changes to channels.
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*/
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interface ChannelListener {
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/**
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* Value passed to {@link #onChannelClosed(Channel, int, int)}, {@link #onInputClosed(Channel, int, int)}
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* and {@link #onOutputClosed(Channel, int, int)} when the closing is due to a remote node
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* being disconnected.
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*/
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int CLOSE_REASON_DISCONNECTED = 1;
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/**
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* Value passed to {@link #onChannelClosed(Channel, int, int)}, {@link #onInputClosed(Channel, int, int)}
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* and {@link #onOutputClosed(Channel, int, int)} when the stream is closed due to the
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* local node calling {@link Channel#close(GoogleApiClient)} or {@link Channel#close(GoogleApiClient, int)}.
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*/
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int CLOSE_REASON_LOCAL_CLOSE = 3;
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/**
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* Value passed to {@link #onInputClosed(Channel, int, int)} or {@link #onOutputClosed(Channel, int, int)}
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* (but not {@link #onChannelClosed(Channel, int, int)}), when the stream was closed under
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* normal conditions, e.g the whole file was read, or the OutputStream on the remote node
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* was closed normally.
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*/
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int CLOSE_REASON_NORMAL = 0;
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/**
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* Value passed to {@link #onChannelClosed(Channel, int, int)}, {@link #onInputClosed(Channel, int, int)}
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* and {@link #onOutputClosed(Channel, int, int)} when the stream is closed due to the
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* remote node calling {@link Channel#close(GoogleApiClient)} or {@link Channel#close(GoogleApiClient, int)}.
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*/
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int CLOSE_REASON_REMOTE_CLOSE = 2;
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/**
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* Called when a channel is closed. This can happen through an explicit call to {@link Channel#close(GoogleApiClient)}
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* or {@link #close(GoogleApiClient, int)} on either side of the connection, or due to
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* disconnecting from the remote node.
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*
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* @param closeReason the reason for the channel closing. One of {@link #CLOSE_REASON_DISCONNECTED},
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* {@link #CLOSE_REASON_REMOTE_CLOSE}, or {@link #CLOSE_REASON_LOCAL_CLOSE}.
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* @param appSpecificErrorCode the error code specified on {@link Channel#close(GoogleApiClient, int)},
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* or 0 if closeReason is {@link #CLOSE_REASON_DISCONNECTED}.
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*/
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void onChannelClosed(Channel channel, int closeReason, int appSpecificErrorCode);
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/**
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* Called when a new channel is opened by a remote node.
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*/
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void onChannelOpened(Channel channel);
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/**
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* Called when the input side of a channel is closed.
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*
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* @param closeReason the reason for the channel closing. One of {@link #CLOSE_REASON_DISCONNECTED},
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* {@link #CLOSE_REASON_REMOTE_CLOSE}, {@link #CLOSE_REASON_LOCAL_CLOSE}
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* or {@link #CLOSE_REASON_NORMAL}.
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* @param appSpecificErrorCode the error code specified on {@link Channel#close(GoogleApiClient, int)},
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* or 0 if closeReason is {@link #CLOSE_REASON_DISCONNECTED} or
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* {@link #CLOSE_REASON_NORMAL}.
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*/
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void onInputClosed(Channel channel, @CloseReason int closeReason, int appSpecificErrorCode);
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/**
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* Called when the output side of a channel is closed.
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*
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* @param closeReason the reason for the channel closing. One of {@link #CLOSE_REASON_DISCONNECTED},
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* {@link #CLOSE_REASON_REMOTE_CLOSE}, {@link #CLOSE_REASON_LOCAL_CLOSE}
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* or {@link #CLOSE_REASON_NORMAL}.
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* @param appSpecificErrorCode the error code specified on {@link Channel#close(GoogleApiClient, int)},
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* or 0 if closeReason is {@link #CLOSE_REASON_DISCONNECTED} or
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* {@link #CLOSE_REASON_NORMAL}.
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*/
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void onOutputClosed(Channel channel, @CloseReason int closeReason, int appSpecificErrorCode);
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}
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/**
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* An annotation for values passed to {@link ChannelListener#onChannelClosed(Channel, int, int)},
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* and other methods on the {@link ChannelListener} interface. Annotated method parameters will
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* always take one of the following values:
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* <ul>
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* <li>{@link ChannelListener#CLOSE_REASON_DISCONNECTED}</li>
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* <li>{@link ChannelListener#CLOSE_REASON_NORMAL}</li>
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* <li>{@link ChannelListener#CLOSE_REASON_LOCAL_CLOSE}</li>
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* <li>{@link ChannelListener#CLOSE_REASON_REMOTE_CLOSE}</li>
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* </ul>
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*/
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@Retention(RetentionPolicy.SOURCE)
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@interface CloseReason {
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}
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/**
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* Result of {@link #openChannel(GoogleApiClient, String, String)}.
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*/
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interface OpenChannelResult extends Result {
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/**
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* Returns the newly created channel, or {@code null}, if the connection couldn't be opened.
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*/
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Channel getChannel();
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}
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}
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