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| 1 // Copyright 2015 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.chrome.browser.dom_distiller; |
| 6 |
| 7 import android.content.Context; |
| 8 import android.view.MotionEvent; |
| 9 |
| 10 import org.chromium.chrome.browser.compositor.layouts.eventfilter.EdgeSwipeHandl
er; |
| 11 import org.chromium.chrome.browser.compositor.layouts.eventfilter.EventFilter; |
| 12 import org.chromium.chrome.browser.compositor.layouts.eventfilter.EventFilterHos
t; |
| 13 import org.chromium.chrome.browser.contextualsearch.SwipeRecognizer; |
| 14 |
| 15 /** |
| 16 * A {@link EventFilter} used to filter events in the Reader Mode Bar, when disp
layed |
| 17 * in the StaticLayout. |
| 18 */ |
| 19 public class ReaderModeStaticEventFilter extends EventFilter { |
| 20 /** |
| 21 * The @{link ReaderModePanelSelector} that gives access to a panel controll
ing Reader Mode UI. |
| 22 */ |
| 23 private final ReaderModePanelSelector mReaderModePanelSelector; |
| 24 |
| 25 /** |
| 26 * The @{link SwipeRecognizer} that recognizes directional swipe gestures. |
| 27 */ |
| 28 private final SwipeRecognizer mSwipeRecognizer; |
| 29 |
| 30 private final ReaderModeTapHandler mTapHandler; |
| 31 |
| 32 /** |
| 33 * Interface to handle taps on the reader mode bar. |
| 34 */ |
| 35 public interface ReaderModeTapHandler { |
| 36 /** |
| 37 * Handle a tap event on the reader mode bar. |
| 38 * @param time The time of the tap event. |
| 39 * @param x The x position of the tap event. |
| 40 * @param y The y position of the tap event. |
| 41 */ |
| 42 void handleTapReaderModeBar(long time, float x, float y); |
| 43 } |
| 44 |
| 45 /** |
| 46 * Interface to get the currently active Reader Mode Panel if any. |
| 47 */ |
| 48 public interface ReaderModePanelSelector { |
| 49 /** |
| 50 * @return Currently active reader mode panel, or null. |
| 51 */ |
| 52 ReaderModePanel getActiveReaderModePanel(); |
| 53 } |
| 54 |
| 55 /** |
| 56 * Constructs a {@link ReaderModeStaticEventFilter}. |
| 57 * |
| 58 * @param context The current Android {@link Context}. |
| 59 * @param host The @{link EventFilterHost} associated to this filter. |
| 60 * @param readerModePanelSelector The @{link ReaderModePanelSelector} to acc
ess an active panel. |
| 61 * @param swipeHandler The @{link EdgeSwipeHandler} for Reader Mode events. |
| 62 */ |
| 63 public ReaderModeStaticEventFilter(Context context, EventFilterHost host, |
| 64 ReaderModePanelSelector readerModePanelSelector, EdgeSwipeHandler sw
ipeHandler, |
| 65 ReaderModeTapHandler tapHandler) { |
| 66 super(context, host); |
| 67 |
| 68 mReaderModePanelSelector = readerModePanelSelector; |
| 69 mSwipeRecognizer = new SwipeRecognizerImpl(context); |
| 70 mSwipeRecognizer.setSwipeHandler(swipeHandler); |
| 71 mTapHandler = tapHandler; |
| 72 } |
| 73 |
| 74 @Override |
| 75 protected boolean onInterceptTouchEventInternal(MotionEvent event, boolean i
sKeyboardShowing) { |
| 76 ReaderModePanel readerModePanel = mReaderModePanelSelector.getActiveRead
erModePanel(); |
| 77 return readerModePanel != null && readerModePanel.isShowing() |
| 78 && readerModePanel.isYCoordinateInsideReaderModePanel( |
| 79 readerModePanel.getFullscreenY(event.getY()) * mPxToDp); |
| 80 } |
| 81 |
| 82 @Override |
| 83 protected boolean onTouchEventInternal(MotionEvent event) { |
| 84 mSwipeRecognizer.onTouchEvent(event); |
| 85 return true; |
| 86 } |
| 87 |
| 88 private class SwipeRecognizerImpl extends SwipeRecognizer { |
| 89 public SwipeRecognizerImpl(Context context) { |
| 90 super(context); |
| 91 } |
| 92 |
| 93 @Override |
| 94 public boolean onSingleTapUp(MotionEvent event) { |
| 95 if (mTapHandler == null) return true; |
| 96 ReaderModePanel readerModePanel = mReaderModePanelSelector.getActive
ReaderModePanel(); |
| 97 if (readerModePanel == null) return true; |
| 98 |
| 99 mTapHandler.handleTapReaderModeBar(event.getEventTime(), |
| 100 event.getX() * mPxToDp, |
| 101 readerModePanel.getFullscreenY(event.getY()) * mPxToDp); |
| 102 return true; |
| 103 } |
| 104 } |
| 105 } |
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