mobile/android/base/DynamicToolbar.java@b8a032363ba2 (annotated)
mobile/android/base/DynamicToolbar.java
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | package org.mozilla.gecko; |
| michael@0 | 2 | |
| michael@0 | 3 | import java.util.EnumSet; |
| michael@0 | 4 | |
| michael@0 | 5 | import org.mozilla.gecko.PrefsHelper.PrefHandlerBase; |
| michael@0 | 6 | import org.mozilla.gecko.gfx.LayerView; |
| michael@0 | 7 | import org.mozilla.gecko.util.ThreadUtils; |
| michael@0 | 8 | |
| michael@0 | 9 | import android.os.Bundle; |
| michael@0 | 10 | |
| michael@0 | 11 | public class DynamicToolbar { |
| michael@0 | 12 | private static final String STATE_ENABLED = "dynamic_toolbar"; |
| michael@0 | 13 | private static final String CHROME_PREF = "browser.chrome.dynamictoolbar"; |
| michael@0 | 14 | |
| michael@0 | 15 | // DynamicToolbar is enabled iff prefEnabled is true *and* accessibilityEnabled is false, |
| michael@0 | 16 | // so it is disabled by default on startup. We do not enable it until we explicitly get |
| michael@0 | 17 | // the pref from Gecko telling us to turn it on. |
| michael@0 | 18 | private volatile boolean prefEnabled; |
| michael@0 | 19 | private boolean accessibilityEnabled; |
| michael@0 | 20 | |
| michael@0 | 21 | private final int prefObserverId; |
| michael@0 | 22 | private final EnumSet<PinReason> pinFlags = EnumSet.noneOf(PinReason.class); |
| michael@0 | 23 | private LayerView layerView; |
| michael@0 | 24 | private OnEnabledChangedListener enabledChangedListener; |
| michael@0 | 25 | |
| michael@0 | 26 | public enum PinReason { |
| michael@0 | 27 | RELAYOUT, |
| michael@0 | 28 | ACTION_MODE |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | public enum VisibilityTransition { |
| michael@0 | 32 | IMMEDIATE, |
| michael@0 | 33 | ANIMATE |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | /** |
| michael@0 | 37 | * Listener for changes to the dynamic toolbar's enabled state. |
| michael@0 | 38 | */ |
| michael@0 | 39 | public interface OnEnabledChangedListener { |
| michael@0 | 40 | /** |
| michael@0 | 41 | * This callback is executed on the UI thread. |
| michael@0 | 42 | */ |
| michael@0 | 43 | public void onEnabledChanged(boolean enabled); |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | public DynamicToolbar() { |
| michael@0 | 47 | // Listen to the dynamic toolbar pref |
| michael@0 | 48 | prefObserverId = PrefsHelper.getPref(CHROME_PREF, new PrefHandler()); |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | public void destroy() { |
| michael@0 | 52 | PrefsHelper.removeObserver(prefObserverId); |
| michael@0 | 53 | } |
| michael@0 | 54 | |
| michael@0 | 55 | public void setLayerView(LayerView layerView) { |
| michael@0 | 56 | ThreadUtils.assertOnUiThread(); |
| michael@0 | 57 | |
| michael@0 | 58 | this.layerView = layerView; |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | public void setEnabledChangedListener(OnEnabledChangedListener listener) { |
| michael@0 | 62 | ThreadUtils.assertOnUiThread(); |
| michael@0 | 63 | |
| michael@0 | 64 | enabledChangedListener = listener; |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | public void onSaveInstanceState(Bundle outState) { |
| michael@0 | 68 | ThreadUtils.assertOnUiThread(); |
| michael@0 | 69 | |
| michael@0 | 70 | outState.putBoolean(STATE_ENABLED, prefEnabled); |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | public void onRestoreInstanceState(Bundle savedInstanceState) { |
| michael@0 | 74 | ThreadUtils.assertOnUiThread(); |
| michael@0 | 75 | |
| michael@0 | 76 | if (savedInstanceState != null) { |
| michael@0 | 77 | prefEnabled = savedInstanceState.getBoolean(STATE_ENABLED); |
| michael@0 | 78 | } |
| michael@0 | 79 | } |
| michael@0 | 80 | |
| michael@0 | 81 | public boolean isEnabled() { |
| michael@0 | 82 | ThreadUtils.assertOnUiThread(); |
| michael@0 | 83 | |
| michael@0 | 84 | return prefEnabled && !accessibilityEnabled; |
| michael@0 | 85 | } |
| michael@0 | 86 | |
| michael@0 | 87 | public void setAccessibilityEnabled(boolean enabled) { |
| michael@0 | 88 | ThreadUtils.assertOnUiThread(); |
| michael@0 | 89 | |
| michael@0 | 90 | if (accessibilityEnabled == enabled) { |
| michael@0 | 91 | return; |
| michael@0 | 92 | } |
| michael@0 | 93 | |
| michael@0 | 94 | // Disable the dynamic toolbar when accessibility features are enabled, |
| michael@0 | 95 | // and re-read the preference when they're disabled. |
| michael@0 | 96 | accessibilityEnabled = enabled; |
| michael@0 | 97 | if (prefEnabled) { |
| michael@0 | 98 | triggerEnabledListener(); |
| michael@0 | 99 | } |
| michael@0 | 100 | } |
| michael@0 | 101 | |
| michael@0 | 102 | public void setVisible(boolean visible, VisibilityTransition transition) { |
| michael@0 | 103 | ThreadUtils.assertOnUiThread(); |
| michael@0 | 104 | |
| michael@0 | 105 | if (layerView == null) { |
| michael@0 | 106 | return; |
| michael@0 | 107 | } |
| michael@0 | 108 | |
| michael@0 | 109 | final boolean immediate = transition.equals(VisibilityTransition.IMMEDIATE); |
| michael@0 | 110 | if (visible) { |
| michael@0 | 111 | layerView.getLayerMarginsAnimator().showMargins(immediate); |
| michael@0 | 112 | } else { |
| michael@0 | 113 | layerView.getLayerMarginsAnimator().hideMargins(immediate); |
| michael@0 | 114 | } |
| michael@0 | 115 | } |
| michael@0 | 116 | |
| michael@0 | 117 | public void setPinned(boolean pinned, PinReason reason) { |
| michael@0 | 118 | ThreadUtils.assertOnUiThread(); |
| michael@0 | 119 | |
| michael@0 | 120 | if (layerView == null) { |
| michael@0 | 121 | return; |
| michael@0 | 122 | } |
| michael@0 | 123 | |
| michael@0 | 124 | if (pinned) { |
| michael@0 | 125 | pinFlags.add(reason); |
| michael@0 | 126 | } else { |
| michael@0 | 127 | pinFlags.remove(reason); |
| michael@0 | 128 | } |
| michael@0 | 129 | |
| michael@0 | 130 | layerView.getLayerMarginsAnimator().setMarginsPinned(!pinFlags.isEmpty()); |
| michael@0 | 131 | } |
| michael@0 | 132 | |
| michael@0 | 133 | private void triggerEnabledListener() { |
| michael@0 | 134 | if (enabledChangedListener != null) { |
| michael@0 | 135 | enabledChangedListener.onEnabledChanged(isEnabled()); |
| michael@0 | 136 | } |
| michael@0 | 137 | } |
| michael@0 | 138 | |
| michael@0 | 139 | private class PrefHandler extends PrefHandlerBase { |
| michael@0 | 140 | @Override |
| michael@0 | 141 | public void prefValue(String pref, boolean value) { |
| michael@0 | 142 | if (value == prefEnabled) { |
| michael@0 | 143 | return; |
| michael@0 | 144 | } |
| michael@0 | 145 | |
| michael@0 | 146 | prefEnabled = value; |
| michael@0 | 147 | |
| michael@0 | 148 | ThreadUtils.postToUiThread(new Runnable() { |
| michael@0 | 149 | @Override |
| michael@0 | 150 | public void run() { |
| michael@0 | 151 | // If accessibility is enabled, the dynamic toolbar is |
| michael@0 | 152 | // forced to be off. |
| michael@0 | 153 | if (!accessibilityEnabled) { |
| michael@0 | 154 | triggerEnabledListener(); |
| michael@0 | 155 | } |
| michael@0 | 156 | } |
| michael@0 | 157 | }); |
| michael@0 | 158 | } |
| michael@0 | 159 | |
| michael@0 | 160 | @Override |
| michael@0 | 161 | public boolean isObserver() { |
| michael@0 | 162 | // We want to be notified of changes to be able to switch mode |
| michael@0 | 163 | // without restarting. |
| michael@0 | 164 | return true; |
| michael@0 | 165 | } |
| michael@0 | 166 | } |
| michael@0 | 167 | } |
