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/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
package com.android.browser.mdm;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import com.android.browser.BrowserSettings;
import com.android.browser.PreferenceKeys;
public class DoNotTrackRestriction extends Restriction implements PreferenceKeys {
private final static String TAG = "DoNotTrackRestriction";
public static final String DO_NOT_TRACK_ENABLED = "DoNotTrackEnabled"; // boolean
public static final String DO_NOT_TRACK_VALUE = "DoNotTrackValue"; // boolean
private static DoNotTrackRestriction sInstance;
private boolean mDntValue;
private MdmCheckBoxPreference mPref = null;
private DoNotTrackRestriction() {
super(TAG);
}
public static DoNotTrackRestriction getInstance() {
synchronized (DoNotTrackRestriction.class) {
if (sInstance == null) {
sInstance = new DoNotTrackRestriction();
}
}
return sInstance;
}
@Override
public void enforce(Bundle restrictions) {
SharedPreferences.Editor editor = BrowserSettings.getInstance().getPreferences().edit();
// Possible states
// DNT_enabled DNT_value | menu-item-enabled check-box-value
// -----------------------------------------------------------------
// not set x | Yes curr-sys-value
// 0 x | Yes curr-sys-value
// 1 0 | No 0
// 1 1 | No 1
boolean dntEnabled = restrictions.getBoolean(DO_NOT_TRACK_ENABLED,false);
if (dntEnabled) {
mDntValue = restrictions.getBoolean(DO_NOT_TRACK_VALUE, true); // default to true
editor.putBoolean(PREF_DO_NOT_TRACK, mDntValue);
editor.apply();
// enable the restriction : controls enable of the menu item
// Log.i(TAG, "DNT Restriction enabled. new val [" + mDntValue + "]");
enable(true);
}
else {
enable(false);
}
// Real time update of the Preference if it is registered
updatePref();
}
private void updatePref() {
if (null != mPref) {
if (isEnabled()) {
mPref.setChecked(getValue());
mPref.disablePref();
}
else {
mPref.enablePref();
}
mPref.setMdmRestrictionState(isEnabled());
}
}
public boolean getValue() {
return mDntValue;
}
public void registerPreference (Preference pref) {
mPref = (MdmCheckBoxPreference) pref;
updatePref();
}
}
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