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/*
* Copyright (C) 2011 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.inputmethod;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.util.Log;
import android.view.textservice.SpellCheckerInfo;
import android.view.textservice.TextServicesManager;
import java.util.ArrayList;
public class SpellCheckersSettings extends SettingsPreferenceFragment
implements Preference.OnPreferenceClickListener {
private static final String TAG = SpellCheckersSettings.class.getSimpleName();
private static final boolean DBG = false;
private AlertDialog mDialog = null;
private SpellCheckerInfo mCurrentSci;
private SpellCheckerInfo[] mEnabledScis;
private TextServicesManager mTsm;
private final ArrayList<SingleSpellCheckerPreference> mSpellCheckers =
new ArrayList<SingleSpellCheckerPreference>();
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mTsm = (TextServicesManager) getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
addPreferencesFromResource(R.xml.spellchecker_prefs);
updateScreen();
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
return false;
}
@Override
public void onResume() {
super.onResume();
updateScreen();
}
@Override
public void onPause() {
super.onPause();
saveState();
}
private void saveState() {
SpellCheckerUtils.setCurrentSpellChecker(mTsm, mCurrentSci);
}
private void updateScreen() {
getPreferenceScreen().removeAll();
updateEnabledSpellCheckers();
}
private void updateEnabledSpellCheckers() {
final PackageManager pm = getPackageManager();
mCurrentSci = SpellCheckerUtils.getCurrentSpellChecker(mTsm);
mEnabledScis = SpellCheckerUtils.getEnabledSpellCheckers(mTsm);
if (mCurrentSci == null || mEnabledScis == null) {
return;
}
mSpellCheckers.clear();
for (int i = 0; i < mEnabledScis.length; ++i) {
final SpellCheckerInfo sci = mEnabledScis[i];
final SingleSpellCheckerPreference scPref = new SingleSpellCheckerPreference(
this, null, sci, mTsm);
mSpellCheckers.add(scPref);
scPref.setTitle(sci.loadLabel(pm));
scPref.setSelected(mCurrentSci != null && mCurrentSci.getId().equals(sci.getId()));
getPreferenceScreen().addPreference(scPref);
}
}
@Override
public boolean onPreferenceClick(Preference pref) {
SingleSpellCheckerPreference targetScp = null;
for (SingleSpellCheckerPreference scp : mSpellCheckers) {
if (pref.equals(scp)) {
targetScp = scp;
}
}
if (targetScp != null) {
if (!isSystemApp(targetScp.getSpellCheckerInfo())) {
showSecurityWarnDialog(targetScp);
} else {
changeCurrentSpellChecker(targetScp);
}
}
return true;
}
private void showSecurityWarnDialog(final SingleSpellCheckerPreference scp) {
if (mDialog != null && mDialog.isShowing()) {
mDialog.dismiss();
}
mDialog = (new AlertDialog.Builder(getActivity()))
.setTitle(android.R.string.dialog_alert_title)
.setIconAttribute(android.R.attr.alertDialogIcon)
.setCancelable(true)
.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
changeCurrentSpellChecker(scp);
}
})
.setNegativeButton(android.R.string.cancel,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
})
.create();
mDialog.setMessage(getResources().getString(R.string.spellchecker_security_warning,
scp.getSpellCheckerInfo().getServiceInfo().applicationInfo.loadLabel(
getActivity().getPackageManager())));
mDialog.show();
}
private void changeCurrentSpellChecker(SingleSpellCheckerPreference scp) {
mTsm.setCurrentSpellChecker(scp.getSpellCheckerInfo());
if (DBG) {
Log.d(TAG, "Current spell check is "
+ SpellCheckerUtils.getCurrentSpellChecker(mTsm).getId());
}
updateScreen();
}
private static boolean isSystemApp(SpellCheckerInfo sci) {
return (sci.getServiceInfo().applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
}
}
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