1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 package org.chromium.android_webview; 6 7 import android.content.res.Configuration; 8 import android.graphics.Canvas; 9 import android.graphics.Paint; 10 import android.graphics.Rect; 11 import android.view.KeyEvent; 12 import android.view.MotionEvent; 13 import android.view.View; 14 import android.view.inputmethod.EditorInfo; 15 import android.view.inputmethod.InputConnection; 16 17 import org.chromium.android_webview.AwContents.InternalAccessDelegate; 18 19 /** 20 * No-op implementation of {@link AwViewMethods} that follows the null object pattern. 21 * This {@link NullAwViewMethods} is hooked up to the WebView in fullscreen mode, and 22 * to the {@link FullScreenView} in embedded mode, but not to both at the same time. 23 */ 24 class NullAwViewMethods implements AwViewMethods { 25 private AwContents mAwContents; 26 private InternalAccessDelegate mInternalAccessAdapter; 27 private View mContainerView; 28 29 public NullAwViewMethods( 30 AwContents awContents, InternalAccessDelegate internalAccessAdapter, 31 View containerView) { 32 mAwContents = awContents; 33 mInternalAccessAdapter = internalAccessAdapter; 34 mContainerView = containerView; 35 } 36 37 @Override 38 public void onDraw(Canvas canvas) { 39 canvas.drawColor(mAwContents.getEffectiveBackgroundColor()); 40 } 41 42 @Override 43 public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 44 // When the containerView is using the NullAwViewMethods then it is not 45 // attached to the AwContents. As such, we don't have any contents to measure 46 // and using the last measured dimension is the best we can do. 47 mInternalAccessAdapter.setMeasuredDimension( 48 mContainerView.getMeasuredWidth(), mContainerView.getMeasuredHeight()); 49 } 50 51 @Override 52 public void requestFocus() { 53 // Intentional no-op. 54 } 55 56 @Override 57 public void setLayerType(int layerType, Paint paint) { 58 // Intentional no-op. 59 } 60 61 @Override 62 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 63 return null; // Intentional no-op. 64 } 65 66 @Override 67 public boolean onKeyUp(int keyCode, KeyEvent event) { 68 return false; // Intentional no-op. 69 } 70 71 @Override 72 public boolean dispatchKeyEvent(KeyEvent event) { 73 return false; // Intentional no-op. 74 } 75 76 @Override 77 public boolean onTouchEvent(MotionEvent event) { 78 return false; // Intentional no-op. 79 } 80 81 @Override 82 public boolean onHoverEvent(MotionEvent event) { 83 return false; // Intentional no-op. 84 } 85 86 @Override 87 public boolean onGenericMotionEvent(MotionEvent event) { 88 return false; // Intentional no-op. 89 } 90 91 @Override 92 public void onConfigurationChanged(Configuration newConfig) { 93 // Intentional no-op. 94 } 95 96 @Override 97 public void onAttachedToWindow() { 98 // Intentional no-op. 99 } 100 101 @Override 102 public void onDetachedFromWindow() { 103 // Intentional no-op. 104 } 105 106 @Override 107 public void onWindowFocusChanged(boolean hasWindowFocus) { 108 // Intentional no-op. 109 } 110 111 @Override 112 public void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { 113 // Intentional no-op. 114 } 115 116 @Override 117 public void onSizeChanged(int w, int h, int ow, int oh) { 118 // Intentional no-op. 119 } 120 121 @Override 122 public void onVisibilityChanged(View changedView, int visibility) { 123 // Intentional no-op. 124 } 125 126 @Override 127 public void onWindowVisibilityChanged(int visibility) { 128 // Intentional no-op. 129 } 130 } 131
