Settings: Add support for Lock clock (part 1 of 3)

Change-Id: I13556ce58902e4c6151872c0f0aebe2152677de4

1 files changed, 31 insertions, 0 deletions

diff --git a/src/com/android/settings/cyanogenmod/SystemSettings.java b/src/com/android/settings/cyanogenmod/SystemSettings.java
index 703a10d..5a9ffc2 100644
--- a/src/com/android/settings/cyanogenmod/SystemSettings.java
+++ b/src/com/android/settings/cyanogenmod/SystemSettings.java
@@ -17,22 +17,29 @@
 package com.android.settings.cyanogenmod;
 
 import android.content.Context;
+import android.content.pm.PackageManager.NameNotFoundException;
 import android.os.Bundle;
 import android.os.RemoteException;
 import android.os.ServiceManager;
+import android.preference.Preference;
 import android.preference.PreferenceScreen;
 import android.provider.Settings;
+import android.util.Log;
 import android.view.IWindowManager;
 
 import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
 
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class SystemSettings extends SettingsPreferenceFragment {
     private static final String TAG = "SystemSettings";
 
     private static final String KEY_NOTIFICATION_PULSE = "notification_pulse";
     private static final String KEY_BATTERY_LIGHT = "battery_light";
     private static final String KEY_HARDWARE_KEYS = "hardware_keys";
+    private static final String KEY_LOCK_CLOCK = "lock_clock";
 
     private PreferenceScreen mNotificationPulse;
     private PreferenceScreen mBatteryPulse;
@@ -42,6 +49,11 @@ public class SystemSettings extends SettingsPreferenceFragment {
         super.onCreate(savedInstanceState);
 
         addPreferencesFromResource(R.xml.system_settings);
+
+        // Dont display the lock clock preference if its not installed
+        removePreferenceIfPackageNotInstalled(findPreference(KEY_LOCK_CLOCK));
+
+        // Notification lights
         mNotificationPulse = (PreferenceScreen) findPreference(KEY_NOTIFICATION_PULSE);
         if (mNotificationPulse != null) {
             if (!getResources().getBoolean(com.android.internal.R.bool.config_intrusiveNotificationLed)) {
@@ -51,6 +63,7 @@ public class SystemSettings extends SettingsPreferenceFragment {
             }
         }
 
+        // Battery lights
         mBatteryPulse = (PreferenceScreen) findPreference(KEY_BATTERY_LIGHT);
         if (mBatteryPulse != null) {
             if (getResources().getBoolean(
@@ -103,4 +116,22 @@ public class SystemSettings extends SettingsPreferenceFragment {
         super.onPause();
     }
 
+    private boolean removePreferenceIfPackageNotInstalled(Preference preference) {
+        String intentUri=((PreferenceScreen) preference).getIntent().toUri(1);
+        Pattern pattern = Pattern.compile("component=([^/]+)/");
+        Matcher matcher = pattern.matcher(intentUri);
+
+        String packageName=matcher.find()?matcher.group(1):null;
+        if(packageName != null) {
+            try {
+                getPackageManager().getPackageInfo(packageName, 0);
+            } catch (NameNotFoundException e) {
+                Log.e(TAG,"package "+packageName+" not installed, hiding preference.");
+                getPreferenceScreen().removePreference(preference);
+                return true;
+            }
+        }
+        return false;
+    }
+
 }