1 /* 2 * Copyright (C) 2017 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 package com.example.android.autofillframework.app; 17 18 import android.content.Context; 19 import android.support.annotation.Nullable; 20 import android.util.AttributeSet; 21 import android.util.Log; 22 import android.view.GestureDetector; 23 import android.view.MotionEvent; 24 25 /** 26 * A version of {@link CustomVirtualView} that uses gesture to provide scrolling. 27 */ 28 public class ScrollableCustomVirtualView extends CustomVirtualView 29 implements GestureDetector.OnGestureListener { 30 31 private static final String TAG = "ScrollableCustomView"; 32 33 private GestureDetector mGestureDetector; 34 35 public ScrollableCustomVirtualView(Context context) { 36 this(context, null); 37 } 38 39 public ScrollableCustomVirtualView(Context context, AttributeSet attrs) { 40 this(context, attrs, 0); 41 42 } 43 44 public ScrollableCustomVirtualView(Context context, @Nullable AttributeSet attrs, 45 int defStyleAttr) { 46 this(context, attrs, defStyleAttr, 0); 47 } 48 49 public ScrollableCustomVirtualView(Context context, @Nullable AttributeSet attrs, 50 int defStyleAttr, int defStyleRes) { 51 super(context, attrs, defStyleAttr, defStyleRes); 52 mGestureDetector = new GestureDetector(context, this); 53 } 54 55 /** 56 * Resets the UI to the intial state. 57 */ 58 public void resetPositions() { 59 super.resetCoordinates(); 60 } 61 62 @Override 63 public boolean onTouchEvent(MotionEvent event) { 64 return mGestureDetector.onTouchEvent(event); 65 } 66 67 /* 68 * Methods below implement GestureDetector.OnGestureListener 69 */ 70 @Override 71 public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { 72 if (VERBOSE) Log.v(TAG, "onScroll(): " + distanceX + " - " + distanceY); 73 if (mFocusedLine != null) { 74 mAutofillManager.notifyViewExited(this, mFocusedLine.mFieldTextItem.id); 75 } 76 mTopMargin -= distanceY; 77 mLeftMargin -= distanceX; 78 invalidate(); 79 return true; 80 } 81 82 @Override 83 public boolean onDown(MotionEvent event) { 84 onMotion((int) event.getY()); 85 return true; 86 } 87 88 @Override 89 public void onShowPress(MotionEvent e) { 90 } 91 92 @Override 93 public boolean onSingleTapUp(MotionEvent e) { 94 return true; 95 } 96 97 @Override 98 public void onLongPress(MotionEvent e) { 99 } 100 101 @Override 102 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { 103 return true; 104 } 105 }