1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.permissioncontroller.permission.compat; 18 19 import android.text.Layout; 20 import android.text.Selection; 21 import android.text.Spannable; 22 import android.text.method.LinkMovementMethod; 23 import android.text.method.Touch; 24 import android.view.MotionEvent; 25 import android.widget.TextView; 26 27 import androidx.annotation.NonNull; 28 29 /** 30 * Fixes the issue that links can be triggered for touches outside of line bounds for 31 * {@link LinkMovementMethod}. 32 * <p> 33 * This is based on the fix in ag/22301465. 34 */ 35 public class LinkMovementMethodCompat extends LinkMovementMethod { 36 @Override onTouchEvent(@onNull TextView widget, @NonNull Spannable buffer, @NonNull MotionEvent event)37 public boolean onTouchEvent(@NonNull TextView widget, @NonNull Spannable buffer, 38 @NonNull MotionEvent event) { 39 int action = event.getAction(); 40 41 if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { 42 int x = (int) event.getX(); 43 int y = (int) event.getY(); 44 45 x -= widget.getTotalPaddingLeft(); 46 y -= widget.getTotalPaddingTop(); 47 48 x += widget.getScrollX(); 49 y += widget.getScrollY(); 50 51 Layout layout = widget.getLayout(); 52 boolean isOutOfLineBounds; 53 if (y < 0 || y > layout.getHeight()) { 54 isOutOfLineBounds = true; 55 } else { 56 int line = layout.getLineForVertical(y); 57 isOutOfLineBounds = x < layout.getLineLeft(line) || x > layout.getLineRight(line); 58 } 59 60 if (isOutOfLineBounds) { 61 Selection.removeSelection(buffer); 62 63 // return LinkMovementMethod.super.onTouchEvent(widget, buffer, event); 64 return Touch.onTouchEvent(widget, buffer, event); 65 } 66 } 67 68 return super.onTouchEvent(widget, buffer, event); 69 } 70 71 /** 72 * @return a {@link LinkMovementMethodCompat} instance 73 */ 74 @NonNull getInstance()75 public static LinkMovementMethodCompat getInstance() { 76 if (sInstance == null) { 77 sInstance = new LinkMovementMethodCompat(); 78 } 79 80 return sInstance; 81 } 82 83 private static LinkMovementMethodCompat sInstance; 84 } 85