cmsdk: Add CMSettings preference helpers

* These lived in the Settings app previously, but are now moved as
   we need them in a few places.
 * The support library required to use these helpers, but we
   intentionally reference it using LOCAL_JAVA_LIBRARIES so the
   application will need to declare a dependency.

Change-Id: I56844def5e1100ca0300d0027312cc9adcaab941

sdk/src/java/cyanogenmod/preference/CMGlobalSettingSwitchPreference.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2016 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 cyanogenmod.preference;
+
+import android.content.Context;
+import android.support.v14.preference.SwitchPreference;
+import android.util.AttributeSet;
+
+import cyanogenmod.providers.CMSettings;
+
+public class CMGlobalSettingSwitchPreference extends SwitchPreference {
+    public CMGlobalSettingSwitchPreference(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public CMGlobalSettingSwitchPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public CMGlobalSettingSwitchPreference(Context context) {
+        super(context, null);
+    }
+
+    @Override
+    protected boolean persistBoolean(boolean value) {
+        if (shouldPersist()) {
+            if (value == getPersistedBoolean(!value)) {
+                // It's already there, so the same as persisting
+                return true;
+            }
+            CMSettings.Global.putInt(getContext().getContentResolver(), getKey(), value ? 1 : 0);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    protected boolean getPersistedBoolean(boolean defaultReturnValue) {
+        if (!shouldPersist()) {
+            return defaultReturnValue;
+        }
+        return CMSettings.Global.getInt(getContext().getContentResolver(),
+                getKey(), defaultReturnValue ? 1 : 0) != 0;
+    }
+
+    @Override
+    protected boolean isPersisted() {
+        return CMSettings.Global.getString(getContext().getContentResolver(), getKey()) != null;
+    }
+}

sdk/src/java/cyanogenmod/preference/CMSecureSettingSwitchPreference.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2015 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 cyanogenmod.preference;
+
+import android.content.Context;
+import android.support.v14.preference.SwitchPreference;
+import android.util.AttributeSet;
+
+import cyanogenmod.providers.CMSettings;
+
+public class CMSecureSettingSwitchPreference extends SwitchPreference {
+    public CMSecureSettingSwitchPreference(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public CMSecureSettingSwitchPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public CMSecureSettingSwitchPreference(Context context) {
+        super(context, null);
+    }
+
+    @Override
+    protected boolean persistBoolean(boolean value) {
+        if (shouldPersist()) {
+            if (value == getPersistedBoolean(!value)) {
+                // It's already there, so the same as persisting
+                return true;
+            }
+            CMSettings.Secure.putInt(getContext().getContentResolver(), getKey(), value ? 1 : 0);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    protected boolean getPersistedBoolean(boolean defaultReturnValue) {
+        if (!shouldPersist()) {
+            return defaultReturnValue;
+        }
+        return CMSettings.Secure.getInt(getContext().getContentResolver(),
+                getKey(), defaultReturnValue ? 1 : 0) != 0;
+    }
+
+    @Override
+    protected boolean isPersisted() {
+        return CMSettings.Secure.getString(getContext().getContentResolver(), getKey()) != null;
+    }
+}

sdk/src/java/cyanogenmod/preference/CMSystemSettingSwitchPreference.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2015 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 cyanogenmod.preference;
+
+import android.content.Context;
+import android.support.v14.preference.SwitchPreference;
+import android.util.AttributeSet;
+
+import cyanogenmod.providers.CMSettings;
+
+public class CMSystemSettingSwitchPreference extends SwitchPreference {
+    public CMSystemSettingSwitchPreference(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public CMSystemSettingSwitchPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public CMSystemSettingSwitchPreference(Context context) {
+        super(context, null);
+    }
+
+    @Override
+    protected boolean persistBoolean(boolean value) {
+        if (shouldPersist()) {
+            if (value == getPersistedBoolean(!value)) {
+                // It's already there, so the same as persisting
+                return true;
+            }
+            CMSettings.System.putInt(getContext().getContentResolver(), getKey(), value ? 1 : 0);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    protected boolean getPersistedBoolean(boolean defaultReturnValue) {
+        if (!shouldPersist()) {
+            return defaultReturnValue;
+        }
+        return CMSettings.System.getInt(getContext().getContentResolver(),
+                getKey(), defaultReturnValue ? 1 : 0) != 0;
+    }
+
+    @Override
+    protected boolean isPersisted() {
+        return CMSettings.System.getString(getContext().getContentResolver(), getKey()) != null;
+    }
+}

sdk/src/java/cyanogenmod/preference/SystemSettingSwitchPreference.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2013 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 cyanogenmod.preference;
+
+import android.content.Context;
+import android.provider.Settings;
+import android.support.v14.preference.SwitchPreference;
+import android.util.AttributeSet;
+
+public class SystemSettingSwitchPreference extends SwitchPreference {
+    public SystemSettingSwitchPreference(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public SystemSettingSwitchPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public SystemSettingSwitchPreference(Context context) {
+        super(context, null);
+    }
+
+    @Override
+    protected boolean persistBoolean(boolean value) {
+        if (shouldPersist()) {
+            if (value == getPersistedBoolean(!value)) {
+                // It's already there, so the same as persisting
+                return true;
+            }
+            Settings.System.putInt(getContext().getContentResolver(), getKey(), value ? 1 : 0);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    protected boolean getPersistedBoolean(boolean defaultReturnValue) {
+        if (!shouldPersist()) {
+            return defaultReturnValue;
+        }
+        return Settings.System.getInt(getContext().getContentResolver(),
+                getKey(), defaultReturnValue ? 1 : 0) != 0;
+    }
+
+    @Override
+    protected boolean isPersisted() {
+        return Settings.System.getString(getContext().getContentResolver(), getKey()) != null;
+    }
+}