Refactor GestureNavigationSeekBarPreference

- Make GestureNavigationSeekBarPreference more flexible to configure

Fixes: 146462894
Test: adb shell am start -a android.settings.ASSIST_GESTURE_SETTINGS
      adb shell am start -a com.android.settings.GESTURE_NAVIGATION_SETTINGS

Change-Id: Ibc7ed8456fe4a42f12f0d436f53756df268acfbe

res/layout/preference_labeled_slider.xml

@@ -62,7 +62,6 @@
             android:layout_height="wrap_content"
             android:layout_gravity="start|top"
             android:gravity="start"
-            android:text="@string/low_label"
             android:layout_weight="1"/>
 
         <TextView
@@ -72,7 +71,6 @@
             android:layout_height="wrap_content"
             android:layout_gravity="end|top"
             android:gravity="end"
-            android:text="@string/high_label"
             android:layout_weight="1"/>
 
     </LinearLayout>

res/values/attrs.xml

@@ -159,6 +159,12 @@
         <attr name="textOff" format="reference" />
     </declare-styleable>
 
+    <!-- For LabeledSeekBarPreference -->
+    <declare-styleable name="LabeledSeekBarPreference">
+        <attr name="textStart" format="reference" />
+        <attr name="textEnd" format="reference" />
+    </declare-styleable>
+
     <declare-styleable name="TintDrawable">
         <attr name="android:tint" />
         <attr name="android:drawable" />

res/xml/gesture_navigation_settings.xml

@@ -28,17 +28,21 @@
         android:persistent="false"
         android:title="@string/back_sensitivity_dialog_title">
 
-        <com.android.settings.gestures.GestureNavigationSeekBarPreference
+        <com.android.settings.widget.LabeledSeekBarPreference
             android:key="gesture_left_back_sensitivity"
             android:title="@string/left_edge"
             android:max="3"
-            android:selectable="true"/>
+            android:selectable="true"
+            settings:textStart="@string/low_label"
+            settings:textEnd="@string/high_label"/>
 
-        <com.android.settings.gestures.GestureNavigationSeekBarPreference
+        <com.android.settings.widget.LabeledSeekBarPreference
             android:key="gesture_right_back_sensitivity"
             android:title="@string/right_edge"
             android:max="3"
-            android:selectable="true"/>
+            android:selectable="true"
+            settings:textStart="@string/low_label"
+            settings:textEnd="@string/high_label"/>
     </PreferenceCategory>
 
     <com.android.settingslib.widget.FooterPreference

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

@@ -25,6 +25,7 @@ import android.view.WindowManager;
 import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settings.widget.LabeledSeekBarPreference;
 import com.android.settingslib.search.SearchIndexable;
 
 /**
@@ -108,7 +109,7 @@ public class GestureNavigationSettingsFragment extends DashboardFragment {
     }
 
     private void initSeekBarPreference(final String key) {
-        final GestureNavigationSeekBarPreference pref = getPreferenceScreen().findPreference(key);
+        final LabeledSeekBarPreference pref = getPreferenceScreen().findPreference(key);
         pref.setContinuousUpdates(true);
 
         final String settingsKey = key == LEFT_EDGE_SEEKBAR_KEY

src/com/android/settings/widget/LabeledSeekBarPreference.java

@@ -14,35 +14,59 @@
  * limitations under the License.
  */
 
-package com.android.settings.gestures;
+package com.android.settings.widget;
 
 import android.content.Context;
+import android.content.res.TypedArray;
 import android.util.AttributeSet;
 import android.widget.SeekBar;
+import android.widget.TextView;
 
 import androidx.core.content.res.TypedArrayUtils;
+import androidx.preference.PreferenceViewHolder;
 
 import com.android.settings.R;
-import com.android.settings.widget.SeekBarPreference;
 
-/** A slider preference that is used to set the back gesture's sensitivity **/
-public class GestureNavigationSeekBarPreference extends SeekBarPreference {
+/** A slider preference with left and right labels **/
+public class LabeledSeekBarPreference extends SeekBarPreference {
 
+    private final int mTextStartId;
+    private final int mTextEndId;
     private OnPreferenceChangeListener mStopListener;
 
-    public GestureNavigationSeekBarPreference(Context context, AttributeSet attrs, int defStyleAttr,
+    public LabeledSeekBarPreference(Context context, AttributeSet attrs, int defStyleAttr,
             int defStyleRes) {
 
         super(context, attrs, defStyleAttr, defStyleRes);
-        setLayoutResource(R.layout.preference_gesture_navigation_slider);
+        setLayoutResource(R.layout.preference_labeled_slider);
+
+        final TypedArray styledAttrs = context.obtainStyledAttributes(attrs,
+                R.styleable.LabeledSeekBarPreference);
+        mTextStartId = styledAttrs.getResourceId(
+                R.styleable.LabeledSeekBarPreference_textStart,
+                R.string.summary_placeholder);
+        mTextEndId = styledAttrs.getResourceId(
+                R.styleable.LabeledSeekBarPreference_textEnd,
+                R.string.summary_placeholder);
+        styledAttrs.recycle();
     }
 
-    public GestureNavigationSeekBarPreference(Context context, AttributeSet attrs) {
+    public LabeledSeekBarPreference(Context context, AttributeSet attrs) {
         this(context, attrs, TypedArrayUtils.getAttr(context,
                 androidx.preference.R.attr.seekBarPreferenceStyle,
                 com.android.internal.R.attr.seekBarPreferenceStyle), 0);
     }
 
+    @Override
+    public void onBindViewHolder(PreferenceViewHolder holder) {
+        super.onBindViewHolder(holder);
+
+        final TextView startText = (TextView) holder.findViewById(android.R.id.text1);
+        final TextView endText = (TextView) holder.findViewById(android.R.id.text2);
+        startText.setText(mTextStartId);
+        endText.setText(mTextEndId);
+    }
+
     public void setOnPreferenceChangeStopListener(OnPreferenceChangeListener listener) {
         mStopListener = listener;
     }

tests/robotests/src/com/android/settings/gestures/LabeledSeekBarPreferenceTest.java

@@ -27,6 +27,8 @@ import android.widget.SeekBar;
 
 import androidx.preference.Preference;
 
+import com.android.settings.widget.LabeledSeekBarPreference;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -36,11 +38,11 @@ import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 
 @RunWith(RobolectricTestRunner.class)
-public class GestureNavigationSeekBarPreferenceTest {
+public class LabeledSeekBarPreferenceTest {
 
     private Context mContext;
     private SeekBar mSeekBar;
-    private GestureNavigationSeekBarPreference mSeekBarPreference;
+    private LabeledSeekBarPreference mSeekBarPreference;
 
     @Mock
     private Preference.OnPreferenceChangeListener mListener;
@@ -50,7 +52,7 @@ public class GestureNavigationSeekBarPreferenceTest {
         MockitoAnnotations.initMocks(this);
 
         mContext = RuntimeEnvironment.application;
-        mSeekBarPreference = new GestureNavigationSeekBarPreference(mContext, null);
+        mSeekBarPreference = new LabeledSeekBarPreference(mContext, null);
         LayoutInflater inflater = LayoutInflater.from(mContext);
         final View view =
                 inflater.inflate(mSeekBarPreference.getLayoutResource(),