OmniLib: Introduce OmniRom SDK

 * omnilib-res app will be installed to system/frameworks for the futur internal ressources add-on
 * OmniLib java_library will be installed to system/frameworks for the futur internal java/aidl add-on
 * The OmniPreference android_library need to be moved outside system/frameworks  because of some nested dependency breakage

Change-Id: I2b9a7bc7f4aa72052ae6600933eb114d2a481b35

omnilib-res: Add allow-reserved-package-id

Thx to the LineageOS team

https://github.com/LineageOS/android_lineage-sdk/blob/lineage-20.0/Android.bp#L44-L49

Change-Id: I07ba56685981a8735bdef5ea75528ec82dd68318
diff --git a/omnipreference/java/omnirom/widget/SystemSettingsSwitch.java b/omnipreference/java/omnirom/widget/SystemSettingsSwitch.java
new file mode 100644
index 0000000..74fa2fa
--- /dev/null
+++ b/omnipreference/java/omnirom/widget/SystemSettingsSwitch.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2020 The OmniROM 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 omnirom.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.widget.Switch;
+
+import omnirom.preference.R;
+
+public class SystemSettingsSwitch extends Switch {
+
+    private boolean mInflated = false;
+    private int mInitialValue = 0;
+
+    public SystemSettingsSwitch(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        setInitialValue(context, attrs);
+    }
+
+    public SystemSettingsSwitch(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setInitialValue(context, attrs);
+    }
+
+    public SystemSettingsSwitch(Context context) {
+        super(context, null);
+    }
+
+    private void setInitialValue(Context context, AttributeSet attrs) {
+        if (attrs == null) return;
+        final TypedArray attributes = context.obtainStyledAttributes(attrs,
+                R.styleable.SystemSettingsSwitch, 0, 0);
+        mInitialValue =
+                attributes.getInteger(R.styleable.SystemSettingsSwitch_initialValue, 0);
+        attributes.recycle();
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        mInflated = true;
+        switch (mInitialValue) {
+            case 0:
+                setChecked(Settings.System.getIntForUser(getContext().getContentResolver(),
+                    getResources().getResourceEntryName(getId()), 0, UserHandle.USER_CURRENT) != 0);
+                break;
+            case 1:
+                setChecked(Settings.System.getIntForUser(getContext().getContentResolver(),
+                    getResources().getResourceEntryName(getId()), 1, UserHandle.USER_CURRENT) == 1);
+        }
+    }
+
+    @Override
+    public void setChecked(boolean checked) {
+        if (!mInflated) return;
+        Settings.System.putIntForUser(getContext().getContentResolver(),
+                getResources().getResourceEntryName(getId()), checked ? 1 : 0, UserHandle.USER_CURRENT);
+        super.setChecked(checked);
+    }
+}