115 lines
3.2 KiB
Java
115 lines
3.2 KiB
Java
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/*
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* Copyright (C) 2010 The Android Open Source Project
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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 android.view;
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import android.os.Parcel;
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import android.os.Parcelable;
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/**
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* Common base class for input events.
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*/
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public abstract class InputEvent implements Parcelable {
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/** @hide */
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protected int mDeviceId;
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/** @hide */
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protected int mSource;
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/** @hide */
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protected static final int PARCEL_TOKEN_MOTION_EVENT = 1;
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/** @hide */
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protected static final int PARCEL_TOKEN_KEY_EVENT = 2;
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/*package*/ InputEvent() {
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}
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/**
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* Gets the id for the device that this event came from. An id of
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* zero indicates that the event didn't come from a physical device
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* and maps to the default keymap. The other numbers are arbitrary and
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* you shouldn't depend on the values.
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*
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* @return The device id.
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* @see InputDevice#getDevice
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*/
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public final int getDeviceId() {
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return mDeviceId;
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}
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/**
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* Gets the device that this event came from.
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*
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* @return The device, or null if unknown.
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*/
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public final InputDevice getDevice() {
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return InputDevice.getDevice(mDeviceId);
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}
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/**
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* Gets the source of the event.
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*
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* @return The event source or {@link InputDevice#SOURCE_UNKNOWN} if unknown.
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* @see InputDevice#getSourceInfo
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*/
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public final int getSource() {
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return mSource;
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}
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/**
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* Modifies the source of the event.
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* @param source The source.
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*
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* @hide
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*/
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public final void setSource(int source) {
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mSource = source;
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}
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public int describeContents() {
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return 0;
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}
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/** @hide */
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protected final void readBaseFromParcel(Parcel in) {
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mDeviceId = in.readInt();
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mSource = in.readInt();
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}
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/** @hide */
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protected final void writeBaseToParcel(Parcel out) {
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out.writeInt(mDeviceId);
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out.writeInt(mSource);
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}
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public static final Parcelable.Creator<InputEvent> CREATOR
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= new Parcelable.Creator<InputEvent>() {
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public InputEvent createFromParcel(Parcel in) {
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int token = in.readInt();
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if (token == PARCEL_TOKEN_KEY_EVENT) {
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return KeyEvent.createFromParcelBody(in);
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} else if (token == PARCEL_TOKEN_MOTION_EVENT) {
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return MotionEvent.createFromParcelBody(in);
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} else {
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throw new IllegalStateException("Unexpected input event type token in parcel.");
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}
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}
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public InputEvent[] newArray(int size) {
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return new InputEvent[size];
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}
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};
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}
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