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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 android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.ApplicationInfo;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceClickListener;
import android.preference.PreferenceScreen;
import android.util.Log;
import android.view.textservice.SpellCheckerInfo;
import android.view.textservice.SpellCheckerSubtype;
import android.view.textservice.TextServicesManager;
import android.widget.Switch;
import com.android.settings.R;
import com.android.settings.SettingsActivity;
import com.android.settings.SettingsPreferenceFragment;
import com.android.settings.inputmethod.SpellCheckerPreference.OnRadioButtonPreferenceListener;
import com.android.settings.widget.SwitchBar;
import com.android.settings.widget.SwitchBar.OnSwitchChangeListener;
public class SpellCheckersSettings extends SettingsPreferenceFragment
implements OnSwitchChangeListener, OnPreferenceClickListener,
OnRadioButtonPreferenceListener {
private static final String TAG = SpellCheckersSettings.class.getSimpleName();
private static final boolean DBG = false;
private static final String KEY_SPELL_CHECKER_LANGUAGE = "spellchecker_language";
private static final int ITEM_ID_USE_SYSTEM_LANGUAGE = 0;
private SwitchBar mSwitchBar;
private Preference mSpellCheckerLanaguagePref;
private AlertDialog mDialog = null;
private SpellCheckerInfo mCurrentSci;
private SpellCheckerInfo[] mEnabledScis;
private TextServicesManager mTsm;
@Override
public void onCreate(final Bundle icicle) {
super.onCreate(icicle);
addPreferencesFromResource(R.xml.spellchecker_prefs);
mSpellCheckerLanaguagePref = findPreference(KEY_SPELL_CHECKER_LANGUAGE);
mSpellCheckerLanaguagePref.setOnPreferenceClickListener(this);
mTsm = (TextServicesManager) getSystemService(Context.TEXT_SERVICES_MANAGER_SERVICE);
mCurrentSci = mTsm.getCurrentSpellChecker();
mEnabledScis = mTsm.getEnabledSpellCheckers();
populatePreferenceScreen();
}
private void populatePreferenceScreen() {
final PreferenceScreen screen = getPreferenceScreen();
final Context context = getActivity();
final int count = (mEnabledScis == null) ? 0 : mEnabledScis.length;
for (int index = 0; index < count; ++index) {
final SpellCheckerInfo sci = mEnabledScis[index];
final SpellCheckerPreference pref = new SpellCheckerPreference(context, sci, this);
screen.addPreference(pref);
InputMethodAndSubtypeUtil.removeUnnecessaryNonPersistentPreference(pref);
}
}
@Override
public void onResume() {
super.onResume();
mSwitchBar = ((SettingsActivity)getActivity()).getSwitchBar();
mSwitchBar.show();
mSwitchBar.addOnSwitchChangeListener(this);
updatePreferenceScreen();
}
@Override
public void onPause() {
super.onPause();
mSwitchBar.removeOnSwitchChangeListener(this);
}
@Override
public void onSwitchChanged(final Switch switchView, final boolean isChecked) {
mTsm.setSpellCheckerEnabled(isChecked);
updatePreferenceScreen();
}
private void updatePreferenceScreen() {
mCurrentSci = mTsm.getCurrentSpellChecker();
final boolean isSpellCheckerEnabled = mTsm.isSpellCheckerEnabled();
mSwitchBar.setChecked(isSpellCheckerEnabled);
final SpellCheckerSubtype currentScs = mTsm.getCurrentSpellCheckerSubtype(
false /* allowImplicitlySelectedSubtype */);
mSpellCheckerLanaguagePref.setSummary(getSpellCheckerSubtypeLabel(mCurrentSci, currentScs));
final PreferenceScreen screen = getPreferenceScreen();
final int count = screen.getPreferenceCount();
for (int index = 0; index < count; index++) {
final Preference preference = screen.getPreference(index);
preference.setEnabled(isSpellCheckerEnabled);
if (preference instanceof SpellCheckerPreference) {
final SpellCheckerPreference pref = (SpellCheckerPreference)preference;
final SpellCheckerInfo sci = pref.getSpellCheckerInfo();
pref.setSelected(mCurrentSci != null && mCurrentSci.getId().equals(sci.getId()));
}
}
}
private CharSequence getSpellCheckerSubtypeLabel(final SpellCheckerInfo sci,
final SpellCheckerSubtype subtype) {
if (sci == null) {
return null;
}
if (subtype == null) {
return getString(R.string.use_system_language_to_select_input_method_subtypes);
}
return subtype.getDisplayName(
getActivity(), sci.getPackageName(), sci.getServiceInfo().applicationInfo);
}
@Override
public boolean onPreferenceClick(final Preference pref) {
if (pref == mSpellCheckerLanaguagePref) {
showChooseLanguageDialog();
return true;
}
return false;
}
@Override
public void onRadioButtonClicked(final SpellCheckerPreference pref) {
final SpellCheckerInfo sci = pref.getSpellCheckerInfo();
final boolean isSystemApp =
(sci.getServiceInfo().applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
if (isSystemApp) {
changeCurrentSpellChecker(sci);
} else {
showSecurityWarnDialog(pref);
}
}
private static int convertSubtypeIndexToDialogItemId(final int index) { return index + 1; }
private static int convertDialogItemIdToSubtypeIndex(final int item) { return item - 1; }
private void showChooseLanguageDialog() {
if (mDialog != null && mDialog.isShowing()) {
mDialog.dismiss();
}
final SpellCheckerInfo currentSci = mTsm.getCurrentSpellChecker();
final SpellCheckerSubtype currentScs = mTsm.getCurrentSpellCheckerSubtype(
false /* allowImplicitlySelectedSubtype */);
final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(R.string.phone_language);
final int subtypeCount = currentSci.getSubtypeCount();
final CharSequence[] items = new CharSequence[subtypeCount + 1 /* default */ ];
items[ITEM_ID_USE_SYSTEM_LANGUAGE] = getSpellCheckerSubtypeLabel(currentSci, null);
int checkedItemId = ITEM_ID_USE_SYSTEM_LANGUAGE;
for (int index = 0; index < subtypeCount; ++index) {
final SpellCheckerSubtype subtype = currentSci.getSubtypeAt(index);
final int itemId = convertSubtypeIndexToDialogItemId(index);
items[itemId] = getSpellCheckerSubtypeLabel(currentSci, subtype);
if (subtype.equals(currentScs)) {
checkedItemId = itemId;
}
}
builder.setSingleChoiceItems(items, checkedItemId, new AlertDialog.OnClickListener() {
@Override
public void onClick(final DialogInterface dialog, final int item) {
if (item == ITEM_ID_USE_SYSTEM_LANGUAGE) {
mTsm.setSpellCheckerSubtype(null);
} else {
final int index = convertDialogItemIdToSubtypeIndex(item);
mTsm.setSpellCheckerSubtype(currentSci.getSubtypeAt(index));
}
if (DBG) {
final SpellCheckerSubtype subtype = mTsm.getCurrentSpellCheckerSubtype(
true /* allowImplicitlySelectedSubtype */);
Log.d(TAG, "Current spell check locale is "
+ subtype == null ? "null" : subtype.getLocale());
}
dialog.dismiss();
updatePreferenceScreen();
}
});
mDialog = builder.create();
mDialog.show();
}
private void showSecurityWarnDialog(final SpellCheckerPreference pref) {
if (mDialog != null && mDialog.isShowing()) {
mDialog.dismiss();
}
final SpellCheckerInfo sci = pref.getSpellCheckerInfo();
final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(android.R.string.dialog_alert_title);
builder.setMessage(getString(R.string.spellchecker_security_warning, pref.getTitle()));
builder.setCancelable(true);
builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(final DialogInterface dialog, final int which) {
changeCurrentSpellChecker(sci);
}
});
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
@Override
public void onClick(final DialogInterface dialog, final int which) {
}
});
mDialog = builder.create();
mDialog.show();
}
private void changeCurrentSpellChecker(final SpellCheckerInfo sci) {
mTsm.setCurrentSpellChecker(sci);
if (DBG) {
Log.d(TAG, "Current spell check is " + mTsm.getCurrentSpellChecker().getId());
}
updatePreferenceScreen();
}
}
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