Add panic gesture settings page.

Ui is not final, the strings and video are placeholder only.

Bug: 161394591
Test: robotests
Change-Id: I8ada396506363e4711a1544e2c7ba1cd0e5d2dda

src/com/android/settings/gestures/DoubleTapScreenPreferenceController.java

@@ -35,7 +35,7 @@ public class DoubleTapScreenPreferenceController extends GesturePreferenceContro
 
     private static final String PREF_KEY_VIDEO = "gesture_double_tap_screen_video";
 
-    private final String SECURE_KEY = DOZE_DOUBLE_TAP_GESTURE;
+    private static final String SECURE_KEY = DOZE_DOUBLE_TAP_GESTURE;
 
     private AmbientDisplayConfiguration mAmbientConfig;
     @UserIdInt

src/com/android/settings/gestures/EmergencySosGesturePreferenceController.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.gestures;
+
+import android.content.Context;
+import android.provider.Settings;
+import android.text.TextUtils;
+
+import androidx.annotation.VisibleForTesting;
+
+import com.android.settings.R;
+
+/**
+ * Preference controller for emergency sos gesture setting
+ */
+public class EmergencySosGesturePreferenceController extends GesturePreferenceController {
+
+    @VisibleForTesting
+    static final int ON = 1;
+    @VisibleForTesting
+    static final int OFF = 0;
+
+    private static final String PREF_KEY_VIDEO = "gesture_emergency_sos_button_screen_video";
+
+    private static final String SECURE_KEY = Settings.Secure.PANIC_GESTURE_ENABLED;
+
+    public EmergencySosGesturePreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    private static boolean isGestureAvailable(Context context) {
+        return context.getResources()
+                .getBoolean(R.bool.config_show_emergency_sos_gesture_settings);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return isGestureAvailable(mContext) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), "gesture_emergency_sos_button");
+    }
+
+    @Override
+    protected String getVideoPrefKey() {
+        return PREF_KEY_VIDEO;
+    }
+
+    @Override
+    public boolean isChecked() {
+        return Settings.Secure.getInt(mContext.getContentResolver(), SECURE_KEY, OFF) == ON;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        return Settings.Secure.putInt(mContext.getContentResolver(), SECURE_KEY,
+                isChecked ? ON : OFF);
+    }
+}

src/com/android/settings/gestures/EmergencySosGestureSettings.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.gestures;
+
+import android.app.settings.SettingsEnums;
+
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settingslib.search.SearchIndexable;
+
+/**
+ * Settings page for emergency sos gesture
+ */
+@SearchIndexable
+public class EmergencySosGestureSettings extends DashboardFragment {
+
+    private static final String TAG = "PanicGestureSettings";
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.emergency_sos_gesture_settings;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.EMERGENCY_SOS_GESTURE_SETTINGS;
+    }
+
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider(R.xml.emergency_sos_gesture_settings);
+}