Add sensitivity configuration to long press power dialog

This gives the user the ability to configure the length of the long press power gesture. The configuration values are read from config.xml and can be customized per device.

Bug: 193792060
Test: Manual test on Pixel 6 and Pixel 4 hardware devices
Test: Unit tests with make -j64 RunSettingsRoboTests ROBOTEST_FILTER="com.android.settings.gestures.*"
Change-Id: Ia6595c1337244b01e9c8b2ef04dd97a9a0f03de2

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

@@ -20,9 +20,11 @@ import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.drawable.Drawable;
 import android.util.AttributeSet;
+import android.view.View;
 import android.widget.SeekBar;
 import android.widget.TextView;
 
+import androidx.annotation.Nullable;
 import androidx.core.content.res.TypedArrayUtils;
 import androidx.preference.PreferenceViewHolder;
 
@@ -35,6 +37,8 @@ public class LabeledSeekBarPreference extends SeekBarPreference {
     private final int mTextEndId;
     private final int mTickMarkId;
     private OnPreferenceChangeListener mStopListener;
+    @Nullable
+    private CharSequence mSummary;
 
     public LabeledSeekBarPreference(Context context, AttributeSet attrs, int defStyleAttr,
             int defStyleRes) {
@@ -52,6 +56,7 @@ public class LabeledSeekBarPreference extends SeekBarPreference {
                 R.string.summary_placeholder);
         mTickMarkId = styledAttrs.getResourceId(
                 R.styleable.LabeledSeekBarPreference_tickMark, /* defValue= */ 0);
+        mSummary = styledAttrs.getText(R.styleable.Preference_android_summary);
         styledAttrs.recycle();
     }
 
@@ -76,6 +81,15 @@ public class LabeledSeekBarPreference extends SeekBarPreference {
                     com.android.internal.R.id.seekbar);
             seekBar.setTickMark(tickMark);
         }
+
+        final TextView summary = (TextView) holder.findViewById(android.R.id.summary);
+        if (mSummary != null) {
+            summary.setText(mSummary);
+            summary.setVisibility(View.VISIBLE);
+        } else {
+            summary.setText(null);
+            summary.setVisibility(View.GONE);
+        }
     }
 
     public void setOnPreferenceChangeStopListener(OnPreferenceChangeListener listener) {
@@ -90,5 +104,24 @@ public class LabeledSeekBarPreference extends SeekBarPreference {
             mStopListener.onPreferenceChange(this, seekBar.getProgress());
         }
     }
+
+    @Override
+    public void setSummary(CharSequence summary) {
+        super.setSummary(summary);
+        mSummary = summary;
+        notifyChanged();
+    }
+
+    @Override
+    public void setSummary(int summaryResId) {
+        super.setSummary(summaryResId);
+        mSummary = getContext().getText(summaryResId);
+        notifyChanged();
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        return mSummary;
+    }
 }