The Tor Browser / file comparison
comparison: mobile/android/base/DynamicToolbar.java
mobile/android/base/DynamicToolbar.java
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:81e6ee6959ec |
|---|---|
| 1 package org.mozilla.gecko; | |
| 2 | |
| 3 import java.util.EnumSet; | |
| 4 | |
| 5 import org.mozilla.gecko.PrefsHelper.PrefHandlerBase; | |
| 6 import org.mozilla.gecko.gfx.LayerView; | |
| 7 import org.mozilla.gecko.util.ThreadUtils; | |
| 8 | |
| 9 import android.os.Bundle; | |
| 10 | |
| 11 public class DynamicToolbar { | |
| 12 private static final String STATE_ENABLED = "dynamic_toolbar"; | |
| 13 private static final String CHROME_PREF = "browser.chrome.dynamictoolbar"; | |
| 14 | |
| 15 // DynamicToolbar is enabled iff prefEnabled is true *and* accessibilityEnabled is false, | |
| 16 // so it is disabled by default on startup. We do not enable it until we explicitly get | |
| 17 // the pref from Gecko telling us to turn it on. | |
| 18 private volatile boolean prefEnabled; | |
| 19 private boolean accessibilityEnabled; | |
| 20 | |
| 21 private final int prefObserverId; | |
| 22 private final EnumSet<PinReason> pinFlags = EnumSet.noneOf(PinReason.class); | |
| 23 private LayerView layerView; | |
| 24 private OnEnabledChangedListener enabledChangedListener; | |
| 25 | |
| 26 public enum PinReason { | |
| 27 RELAYOUT, | |
| 28 ACTION_MODE | |
| 29 } | |
| 30 | |
| 31 public enum VisibilityTransition { | |
| 32 IMMEDIATE, | |
| 33 ANIMATE | |
| 34 } | |
| 35 | |
| 36 /** | |
| 37 * Listener for changes to the dynamic toolbar's enabled state. | |
| 38 */ | |
| 39 public interface OnEnabledChangedListener { | |
| 40 /** | |
| 41 * This callback is executed on the UI thread. | |
| 42 */ | |
| 43 public void onEnabledChanged(boolean enabled); | |
| 44 } | |
| 45 | |
| 46 public DynamicToolbar() { | |
| 47 // Listen to the dynamic toolbar pref | |
| 48 prefObserverId = PrefsHelper.getPref(CHROME_PREF, new PrefHandler()); | |
| 49 } | |
| 50 | |
| 51 public void destroy() { | |
| 52 PrefsHelper.removeObserver(prefObserverId); | |
| 53 } | |
| 54 | |
| 55 public void setLayerView(LayerView layerView) { | |
| 56 ThreadUtils.assertOnUiThread(); | |
| 57 | |
| 58 this.layerView = layerView; | |
| 59 } | |
| 60 | |
| 61 public void setEnabledChangedListener(OnEnabledChangedListener listener) { | |
| 62 ThreadUtils.assertOnUiThread(); | |
| 63 | |
| 64 enabledChangedListener = listener; | |
| 65 } | |
| 66 | |
| 67 public void onSaveInstanceState(Bundle outState) { | |
| 68 ThreadUtils.assertOnUiThread(); | |
| 69 | |
| 70 outState.putBoolean(STATE_ENABLED, prefEnabled); | |
| 71 } | |
| 72 | |
| 73 public void onRestoreInstanceState(Bundle savedInstanceState) { | |
| 74 ThreadUtils.assertOnUiThread(); | |
| 75 | |
| 76 if (savedInstanceState != null) { | |
| 77 prefEnabled = savedInstanceState.getBoolean(STATE_ENABLED); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 public boolean isEnabled() { | |
| 82 ThreadUtils.assertOnUiThread(); | |
| 83 | |
| 84 return prefEnabled && !accessibilityEnabled; | |
| 85 } | |
| 86 | |
| 87 public void setAccessibilityEnabled(boolean enabled) { | |
| 88 ThreadUtils.assertOnUiThread(); | |
| 89 | |
| 90 if (accessibilityEnabled == enabled) { | |
| 91 return; | |
| 92 } | |
| 93 | |
| 94 // Disable the dynamic toolbar when accessibility features are enabled, | |
| 95 // and re-read the preference when they're disabled. | |
| 96 accessibilityEnabled = enabled; | |
| 97 if (prefEnabled) { | |
| 98 triggerEnabledListener(); | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 public void setVisible(boolean visible, VisibilityTransition transition) { | |
| 103 ThreadUtils.assertOnUiThread(); | |
| 104 | |
| 105 if (layerView == null) { | |
| 106 return; | |
| 107 } | |
| 108 | |
| 109 final boolean immediate = transition.equals(VisibilityTransition.IMMEDIATE); | |
| 110 if (visible) { | |
| 111 layerView.getLayerMarginsAnimator().showMargins(immediate); | |
| 112 } else { | |
| 113 layerView.getLayerMarginsAnimator().hideMargins(immediate); | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 public void setPinned(boolean pinned, PinReason reason) { | |
| 118 ThreadUtils.assertOnUiThread(); | |
| 119 | |
| 120 if (layerView == null) { | |
| 121 return; | |
| 122 } | |
| 123 | |
| 124 if (pinned) { | |
| 125 pinFlags.add(reason); | |
| 126 } else { | |
| 127 pinFlags.remove(reason); | |
| 128 } | |
| 129 | |
| 130 layerView.getLayerMarginsAnimator().setMarginsPinned(!pinFlags.isEmpty()); | |
| 131 } | |
| 132 | |
| 133 private void triggerEnabledListener() { | |
| 134 if (enabledChangedListener != null) { | |
| 135 enabledChangedListener.onEnabledChanged(isEnabled()); | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 private class PrefHandler extends PrefHandlerBase { | |
| 140 @Override | |
| 141 public void prefValue(String pref, boolean value) { | |
| 142 if (value == prefEnabled) { | |
| 143 return; | |
| 144 } | |
| 145 | |
| 146 prefEnabled = value; | |
| 147 | |
| 148 ThreadUtils.postToUiThread(new Runnable() { | |
| 149 @Override | |
| 150 public void run() { | |
| 151 // If accessibility is enabled, the dynamic toolbar is | |
| 152 // forced to be off. | |
| 153 if (!accessibilityEnabled) { | |
| 154 triggerEnabledListener(); | |
| 155 } | |
| 156 } | |
| 157 }); | |
| 158 } | |
| 159 | |
| 160 @Override | |
| 161 public boolean isObserver() { | |
| 162 // We want to be notified of changes to be able to switch mode | |
| 163 // without restarting. | |
| 164 return true; | |
| 165 } | |
| 166 } | |
| 167 } |
