mirror of https://github.com/M66B/FairEmail.git
106 lines
3.3 KiB
Java
106 lines
3.3 KiB
Java
/*
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* Copyright 2017 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 androidx.recyclerview.selection;
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import static androidx.core.util.Preconditions.checkArgument;
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import android.view.GestureDetector.OnDoubleTapListener;
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import android.view.GestureDetector.OnGestureListener;
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import android.view.GestureDetector.SimpleOnGestureListener;
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import android.view.MotionEvent;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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/**
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* GestureRouter is responsible for routing gestures detected by a GestureDetector
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* to registered handlers. The primary function is to divide events by tool-type
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* allowing handlers to cleanly implement tool-type specific policies.
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*
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* @param <T> listener type. Must extend OnGestureListener & OnDoubleTapListener.
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*/
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final class GestureRouter<T extends OnGestureListener & OnDoubleTapListener>
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implements OnGestureListener, OnDoubleTapListener {
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private final ToolHandlerRegistry<T> mDelegates;
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GestureRouter(@NonNull T defaultDelegate) {
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checkArgument(defaultDelegate != null);
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mDelegates = new ToolHandlerRegistry<>(defaultDelegate);
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}
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@SuppressWarnings("unchecked")
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GestureRouter() {
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this((T) new SimpleOnGestureListener());
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}
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/**
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* @param toolType
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* @param delegate the delegate, or null to unregister.
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*/
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public void register(int toolType, @Nullable T delegate) {
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mDelegates.set(toolType, delegate);
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}
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@Override
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public boolean onSingleTapConfirmed(@NonNull MotionEvent e) {
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return mDelegates.get(e).onSingleTapConfirmed(e);
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}
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@Override
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public boolean onDoubleTap(@NonNull MotionEvent e) {
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return mDelegates.get(e).onDoubleTap(e);
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}
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@Override
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public boolean onDoubleTapEvent(@NonNull MotionEvent e) {
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return mDelegates.get(e).onDoubleTapEvent(e);
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}
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@Override
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public boolean onDown(@NonNull MotionEvent e) {
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return mDelegates.get(e).onDown(e);
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}
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@Override
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public void onShowPress(@NonNull MotionEvent e) {
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mDelegates.get(e).onShowPress(e);
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}
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@Override
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public boolean onSingleTapUp(@NonNull MotionEvent e) {
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return mDelegates.get(e).onSingleTapUp(e);
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}
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@Override
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public boolean onScroll(@NonNull MotionEvent e1, @NonNull MotionEvent e2,
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float distanceX, float distanceY) {
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return mDelegates.get(e2).onScroll(e1, e2, distanceX, distanceY);
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}
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@Override
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public void onLongPress(@NonNull MotionEvent e) {
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mDelegates.get(e).onLongPress(e);
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}
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@Override
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public boolean onFling(@NonNull MotionEvent e1, @NonNull MotionEvent e2,
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float velocityX, float velocityY) {
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return mDelegates.get(e2).onFling(e1, e2, velocityX, velocityY);
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}
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}
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