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/*
* Copyright (C) 2010 The Android Open Source 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.android.settings;
import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT;
import android.app.admin.DevicePolicyManager;
import android.content.ContentResolver;
import android.content.Context;
import android.os.Bundle;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.preference.CheckBoxPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.provider.Settings;
import android.util.Log;
import android.view.IWindowManager;
import java.util.ArrayList;
public class DisplaySettings extends SettingsPreferenceFragment implements
Preference.OnPreferenceChangeListener {
private static final String TAG = "DisplaySettings";
/** If there is no setting in the provider, use this. */
private static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000;
private static final String KEY_SCREEN_TIMEOUT = "screen_timeout";
private static final String KEY_ANIMATIONS = "animations";
private static final String KEY_ACCELEROMETER = "accelerometer";
private ListPreference mAnimations;
private CheckBoxPreference mAccelerometer;
private float[] mAnimationScales;
private IWindowManager mWindowManager;
private ListPreference mScreenTimeoutPreference;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ContentResolver resolver = getActivity().getContentResolver();
mWindowManager = IWindowManager.Stub.asInterface(ServiceManager.getService("window"));
addPreferencesFromResource(R.xml.display_settings);
mAnimations = (ListPreference) findPreference(KEY_ANIMATIONS);
mAnimations.setOnPreferenceChangeListener(this);
mAccelerometer = (CheckBoxPreference) findPreference(KEY_ACCELEROMETER);
mAccelerometer.setPersistent(false);
mScreenTimeoutPreference = (ListPreference) findPreference(KEY_SCREEN_TIMEOUT);
final long currentTimeout = Settings.System.getLong(resolver, SCREEN_OFF_TIMEOUT,
FALLBACK_SCREEN_TIMEOUT_VALUE);
mScreenTimeoutPreference.setValue(String.valueOf(currentTimeout));
mScreenTimeoutPreference.setOnPreferenceChangeListener(this);
disableUnusableTimeouts(mScreenTimeoutPreference);
updateTimeoutPreferenceDescription(resolver, currentTimeout);
}
private void updateTimeoutPreferenceDescription(ContentResolver resolver, long currentTimeout) {
final CharSequence[] entries = mScreenTimeoutPreference.getEntries();
final CharSequence[] values = mScreenTimeoutPreference.getEntryValues();
int best = 0;
for (int i = 0; i < values.length; i++) {
long timeout = Long.valueOf(values[i].toString());
if (currentTimeout >= timeout) {
best = i;
}
}
String summary = mScreenTimeoutPreference.getContext()
.getString(R.string.screen_timeout_summary, entries[best]);
mScreenTimeoutPreference.setSummary(summary);
}
private void disableUnusableTimeouts(ListPreference screenTimeoutPreference) {
final DevicePolicyManager dpm =
(DevicePolicyManager) getActivity().getSystemService(
Context.DEVICE_POLICY_SERVICE);
final long maxTimeout = dpm != null ? dpm.getMaximumTimeToLock(null) : 0;
if (maxTimeout == 0) {
return; // policy not enforced
}
final CharSequence[] entries = screenTimeoutPreference.getEntries();
final CharSequence[] values = screenTimeoutPreference.getEntryValues();
ArrayList<CharSequence> revisedEntries = new ArrayList<CharSequence>();
ArrayList<CharSequence> revisedValues = new ArrayList<CharSequence>();
for (int i = 0; i < values.length; i++) {
long timeout = Long.valueOf(values[i].toString());
if (timeout <= maxTimeout) {
revisedEntries.add(entries[i]);
revisedValues.add(values[i]);
}
}
if (revisedEntries.size() != entries.length || revisedValues.size() != values.length) {
screenTimeoutPreference.setEntries(
revisedEntries.toArray(new CharSequence[revisedEntries.size()]));
screenTimeoutPreference.setEntryValues(
revisedValues.toArray(new CharSequence[revisedValues.size()]));
final int userPreference = Integer.valueOf(screenTimeoutPreference.getValue());
if (userPreference <= maxTimeout) {
screenTimeoutPreference.setValue(String.valueOf(userPreference));
} else {
// There will be no highlighted selection since nothing in the list matches
// maxTimeout. The user can still select anything less than maxTimeout.
// TODO: maybe append maxTimeout to the list and mark selected.
}
}
screenTimeoutPreference.setEnabled(revisedEntries.size() > 0);
}
@Override
public void onResume() {
super.onResume();
updateState(true);
}
private void updateState(boolean force) {
int animations = 0;
try {
mAnimationScales = mWindowManager.getAnimationScales();
} catch (RemoteException e) {
}
if (mAnimationScales != null) {
if (mAnimationScales.length >= 1) {
animations = ((int)(mAnimationScales[0]+.5f)) % 10;
}
if (mAnimationScales.length >= 2) {
animations += (((int)(mAnimationScales[1]+.5f)) & 0x7) * 10;
}
}
int idx = 0;
int best = 0;
CharSequence[] aents = mAnimations.getEntryValues();
for (int i=0; i<aents.length; i++) {
int val = Integer.parseInt(aents[i].toString());
if (val <= animations && val > best) {
best = val;
idx = i;
}
}
mAnimations.setValueIndex(idx);
updateAnimationsSummary(mAnimations.getValue());
mAccelerometer.setChecked(Settings.System.getInt(
getContentResolver(),
Settings.System.ACCELEROMETER_ROTATION, 0) != 0);
}
private void updateAnimationsSummary(Object value) {
CharSequence[] summaries = getResources().getTextArray(R.array.animations_summaries);
CharSequence[] values = mAnimations.getEntryValues();
for (int i=0; i<values.length; i++) {
//Log.i("foo", "Comparing entry "+ values[i] + " to current "
// + mAnimations.getValue());
if (values[i].equals(value)) {
mAnimations.setSummary(summaries[i]);
break;
}
}
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
if (preference == mAccelerometer) {
Settings.System.putInt(getContentResolver(),
Settings.System.ACCELEROMETER_ROTATION,
mAccelerometer.isChecked() ? 1 : 0);
}
return true;
}
public boolean onPreferenceChange(Preference preference, Object objValue) {
final String key = preference.getKey();
if (KEY_ANIMATIONS.equals(key)) {
try {
int value = Integer.parseInt((String) objValue);
if (mAnimationScales.length >= 1) {
mAnimationScales[0] = value%10;
}
if (mAnimationScales.length >= 2) {
mAnimationScales[1] = (value/10)%10;
}
try {
mWindowManager.setAnimationScales(mAnimationScales);
} catch (RemoteException e) {
}
updateAnimationsSummary(objValue);
} catch (NumberFormatException e) {
Log.e(TAG, "could not persist animation setting", e);
}
}
if (KEY_SCREEN_TIMEOUT.equals(key)) {
int value = Integer.parseInt((String) objValue);
try {
Settings.System.putInt(getContentResolver(),
SCREEN_OFF_TIMEOUT, value);
updateTimeoutPreferenceDescription(getContentResolver(), value);
} catch (NumberFormatException e) {
Log.e(TAG, "could not persist screen timeout setting", e);
}
}
return true;
}
}
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