fix: 引入Settings的Module

Settings/src/com/android/settings/fuelgauge/batterysaver/BatterySaverScheduleSeekBarController.java

@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2018 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.fuelgauge.batterysaver;
+
+import static com.android.settingslib.fuelgauge.BatterySaverUtils.KEY_PERCENTAGE;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.provider.Settings;
+import android.provider.Settings.Global;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+
+import androidx.preference.Preference;
+import androidx.preference.Preference.OnPreferenceChangeListener;
+import androidx.preference.PreferenceScreen;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.R;
+import com.android.settings.Utils;
+import com.android.settings.widget.SeekBarPreference;
+import com.android.settingslib.fuelgauge.BatterySaverUtils;
+
+/**
+ * Responds to user actions in the Settings > Battery > Set a Schedule Screen for the seekbar. Note
+ * that this seekbar is only visible when the radio button selected is "Percentage".
+ *
+ * <p>Note that this is not a preference controller since that screen does not inherit from
+ * DashboardFragment.
+ *
+ * <p>Will call the appropriate power manager APIs and modify the correct settings to enable users
+ * to control their automatic battery saver toggling preferences. See {@link
+ * Settings.Global#AUTOMATIC_POWER_SAVE_MODE} for more details.
+ */
+public class BatterySaverScheduleSeekBarController
+        implements OnPreferenceChangeListener, OnSeekBarChangeListener {
+
+    public static final int MAX_SEEKBAR_VALUE = 15;
+    public static final int MIN_SEEKBAR_VALUE = 2;
+    public static final String KEY_BATTERY_SAVER_SEEK_BAR = "battery_saver_seek_bar";
+    private static final int LEVEL_UNIT_SCALE = 5;
+
+    @VisibleForTesting public SeekBarPreference mSeekBarPreference;
+    private Context mContext;
+
+    @VisibleForTesting int mPercentage;
+
+    public BatterySaverScheduleSeekBarController(Context context) {
+        mContext = context;
+        mSeekBarPreference = new SeekBarPreference(context);
+        mSeekBarPreference.setLayoutResource(R.layout.preference_widget_seekbar_settings);
+        mSeekBarPreference.setIconSpaceReserved(false);
+        mSeekBarPreference.setOnPreferenceChangeListener(this);
+        mSeekBarPreference.setOnSeekBarChangeListener(this);
+        mSeekBarPreference.setContinuousUpdates(true);
+        mSeekBarPreference.setMax(MAX_SEEKBAR_VALUE);
+        mSeekBarPreference.setMin(MIN_SEEKBAR_VALUE);
+        mSeekBarPreference.setKey(KEY_BATTERY_SAVER_SEEK_BAR);
+        mSeekBarPreference.setHapticFeedbackMode(SeekBarPreference.HAPTIC_FEEDBACK_MODE_ON_TICKS);
+        updateSeekBar();
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        mPercentage = ((Integer) newValue) * LEVEL_UNIT_SCALE;
+        final CharSequence stateDescription = formatStateDescription(mPercentage);
+        preference.setTitle(stateDescription);
+        mSeekBarPreference.overrideSeekBarStateDescription(stateDescription);
+        return true;
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {}
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {}
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+        if (mPercentage > 0) {
+            Settings.Global.putInt(
+                    mContext.getContentResolver(),
+                    Global.LOW_POWER_MODE_TRIGGER_LEVEL,
+                    mPercentage);
+        }
+    }
+
+    public void updateSeekBar() {
+        final ContentResolver resolver = mContext.getContentResolver();
+        final String mode = BatterySaverUtils.getBatterySaverScheduleKey(mContext);
+        if (KEY_PERCENTAGE.equals(mode)) {
+            final int threshold =
+                    Settings.Global.getInt(resolver, Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0);
+            final int currentSeekbarValue = Math.max(threshold / 5, MIN_SEEKBAR_VALUE);
+            mSeekBarPreference.setVisible(true);
+            mSeekBarPreference.setProgress(currentSeekbarValue);
+            final CharSequence stateDescription = formatStateDescription(currentSeekbarValue * 5);
+            mSeekBarPreference.setTitle(stateDescription);
+            mSeekBarPreference.overrideSeekBarStateDescription(stateDescription);
+        } else {
+            mSeekBarPreference.setVisible(false);
+        }
+    }
+
+    /**
+     * Adds the seekbar to the end of the provided preference screen
+     *
+     * @param screen The preference screen to add the seekbar to
+     */
+    public void addToScreen(PreferenceScreen screen) {
+        // makes sure it gets added after the preferences if called due to first time battery
+        // saver message
+        mSeekBarPreference.setOrder(100);
+        screen.addPreference(mSeekBarPreference);
+    }
+
+    private CharSequence formatStateDescription(int percentage) {
+        return mContext.getString(
+                R.string.battery_saver_seekbar_title, Utils.formatPercentage(percentage));
+    }
+}