smdk4412: advanced settings: add spen support back

Change-Id: Ia7243737261bf63e406cd550d417f80b0f9a92cf

7 files changed, 106 insertions, 4 deletions

diff --git a/DeviceSettings/res/values/config.xml b/DeviceSettings/res/values/config.xml
index 5667f97..b289bd9 100644
--- a/DeviceSettings/res/values/config.xml
+++ b/DeviceSettings/res/values/config.xml
@@ -26,4 +26,8 @@
     <string name="intensity_default_value">50</string>
     <string name="intensity_min_value">0</string>
 
+    <!-- S-Pen -->
+    <string name="spen_sysfs_file">"/sys/class/sec/sec_epen"</string>
+    <string name="spen_powersaving_sysfs_file">"/sys/class/sec/sec_epen/epen_saving_mode"</string>
+
 </resources>
diff --git a/DeviceSettings/res/values/strings.xml b/DeviceSettings/res/values/strings.xml
index 155e9c2..874adf1 100644
--- a/DeviceSettings/res/values/strings.xml
+++ b/DeviceSettings/res/values/strings.xml
@@ -53,4 +53,9 @@
     <string name="use_dock_audio_title_head">Use Dock USB Audio</string>
     <string name="use_dock_audio_summary_head">Use the passive audio out on the dock</string>
 
+    <!-- S-Pen -->
+    <string name="spen_subcat_title">S-Pen</string>
+    <string name="spen_power_save_title_head">Power saving mode</string>
+    <string name="spen_power_save_summary_head">Disable stylus digitizer when S-Pen is in device</string>
+
 </resources>
diff --git a/DeviceSettings/res/xml/screen_preferences.xml b/DeviceSettings/res/xml/screen_preferences.xml
index 57d1761..b655618 100644
--- a/DeviceSettings/res/xml/screen_preferences.xml
+++ b/DeviceSettings/res/xml/screen_preferences.xml
@@ -71,4 +71,15 @@
                 android:defaultValue="3" />
     </PreferenceCategory>
 
+    <!-- S-Pen -->
+    <PreferenceCategory
+            android:key="category_spen"
+            android:title="@string/spen_subcat_title">
+        <!-- S-Pen power saving mode -->
+        <com.cyanogenmod.settings.device.SPenPowerSavingMode
+                android:key="spen_power_save"
+                android:title="@string/spen_power_save_title_head"
+                android:summary="@string/spen_power_save_summary_head" />
+    </PreferenceCategory>
+
 </PreferenceScreen>
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java b/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
index 486fe79..310b535 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
@@ -46,6 +46,8 @@ public class DeviceSettings extends FragmentActivity {
     public static final String KEY_HSPA = "hspa";
     public static final String KEY_VIBRATOR_INTENSITY = "vibrator_intensity";
     public static final String KEY_USE_DOCK_AUDIO = "dock_audio";
+    public static final String KEY_CATEGORY_SPEN = "category_spen";
+    public static final String KEY_SPEN_POWER_SAVING_MODE = "spen_power_saving"; 
 
     ViewPager mViewPager;
     TabsAdapter mTabsAdapter;
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/SPenPowerSavingMode.java b/DeviceSettings/src/com/cyanogenmod/settings/device/SPenPowerSavingMode.java
new file mode 100644
index 0000000..e80edd8
--- /dev/null
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/SPenPowerSavingMode.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2012 The CyanogenMod 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.cyanogenmod.settings.device;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.util.AttributeSet;
+import android.preference.CheckBoxPreference;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceChangeListener;
+import android.preference.PreferenceManager;
+
+public class SPenPowerSavingMode extends CheckBoxPreference implements OnPreferenceChangeListener {
+
+    private static String FILE_PATH = null;
+
+    public SPenPowerSavingMode(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        this.setOnPreferenceChangeListener(this);
+        FILE_PATH = context.getResources().getString(R.string.spen_powersaving_sysfs_file);
+    }
+
+    public static boolean isSupported(String filePath) {
+        return Utils.fileExists(filePath);
+    }
+
+    /**
+     * Restore s-pen setting from SharedPreferences. (Write to kernel.)
+     * @param context       The context to read the SharedPreferences from
+     */
+    public static void restore(Context context) {
+        FILE_PATH = context.getResources().getString(R.string.spen_powersaving_sysfs_file);
+
+        if (!isSupported(FILE_PATH)) {
+            return;
+        }
+
+        SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
+        Utils.writeValue(FILE_PATH, sharedPrefs.getBoolean(DeviceSettings.KEY_SPEN_POWER_SAVING_MODE, false) ? "1" : "0");
+    }
+
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        Utils.writeValue(FILE_PATH, ((Boolean) newValue) ? "1" : "0");
+        return true;
+    }
+}
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java b/DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java
index 5a1576d..9efe06d 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java
@@ -17,12 +17,14 @@
 package com.cyanogenmod.settings.device;
 
 import android.content.Context;
+import android.content.res.Resources;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.preference.CheckBoxPreference;
 import android.preference.ListPreference;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
+import android.preference.PreferenceCategory;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceManager;
 import android.preference.PreferenceScreen;
@@ -40,6 +42,8 @@ public class ScreenFragmentActivity extends PreferenceFragment {
     private mDNIeNegative mmDNIeNegative;
     private LedFade mLedFade;
 
+    private static boolean sSPenSupported;
+
     private static final String FILE_TOUCHKEY_BRIGHTNESS = "/sys/class/sec/sec_touchkey/brightness";
     private static final String FILE_TOUCHKEY_DISABLE = "/sys/class/sec/sec_touchkey/force_disable";
 
@@ -48,11 +52,14 @@ public class ScreenFragmentActivity extends PreferenceFragment {
         super.onCreate(savedInstanceState);
 
         addPreferencesFromResource(R.xml.screen_preferences);
-        PreferenceScreen prefSet = getPreferenceScreen();
+        PreferenceScreen preferenceScreen = getPreferenceScreen();
+        Resources res = getResources();
 
+        /* CABC */
         mCABC = (CABC) findPreference(DeviceSettings.KEY_CABC);
         mCABC.setEnabled(CABC.isSupported());
 
+        /* mDNIe */
         mmDNIeScenario = (mDNIeScenario) findPreference(DeviceSettings.KEY_MDNIE_SCENARIO);
         mmDNIeScenario.setEnabled(mDNIeScenario.isSupported());
 
@@ -62,13 +69,24 @@ public class ScreenFragmentActivity extends PreferenceFragment {
         mmDNIeNegative = (mDNIeNegative) findPreference(DeviceSettings.KEY_MDNIE_NEGATIVE);
         mmDNIeNegative.setEnabled(mDNIeNegative.isSupported());
 
+        /* LED */
         mLedFade = (LedFade) findPreference(DeviceSettings.KEY_LED_FADE);
         mLedFade.setEnabled(LedFade.isSupported());
 
-        if (((CheckBoxPreference)prefSet.findPreference(DeviceSettings.KEY_TOUCHKEY_LIGHT)).isChecked()) {
-            prefSet.findPreference(DeviceSettings.KEY_TOUCHKEY_TIMEOUT).setEnabled(true);
+        /* Touchkey */
+        if (((CheckBoxPreference)preferenceScreen.findPreference(DeviceSettings.KEY_TOUCHKEY_LIGHT)).isChecked()) {
+            preferenceScreen.findPreference(DeviceSettings.KEY_TOUCHKEY_TIMEOUT).setEnabled(true);
         } else {
-            prefSet.findPreference(DeviceSettings.KEY_TOUCHKEY_TIMEOUT).setEnabled(false);
+            preferenceScreen.findPreference(DeviceSettings.KEY_TOUCHKEY_TIMEOUT).setEnabled(false);
+        }
+
+        /* S-Pen */
+        String spenFilePath = res.getString(R.string.spen_sysfs_file);
+        sSPenSupported = SPenPowerSavingMode.isSupported(spenFilePath);
+
+        PreferenceCategory spenCategory = (PreferenceCategory) findPreference(DeviceSettings.KEY_CATEGORY_SPEN);
+        if (!sSPenSupported) {
+            preferenceScreen.removePreference(spenCategory);
         }
     }
 
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java b/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
index 950220e..d93d6bf 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
@@ -36,5 +36,6 @@ public class Startup extends BroadcastReceiver {
         LedFade.restore(context);
         TouchkeyTimeout.restore(context);
         VibratorTuningPreference.restore(context);
+        SPenPowerSavingMode.restore(context);
     }
 }