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/*
* Copyright (C) 2014 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.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.preference.Preference;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.textservice.SpellCheckerInfo;
import android.widget.RadioButton;
import android.widget.Toast;
import com.android.settings.R;
import com.android.settings.Utils;
/**
* Spell checker service preference.
*
* This preference represents a spell checker service. It is used for two purposes. 1) A radio
* button on the left side is used to choose the current spell checker service. 2) A settings
* icon on the right side is used to invoke the setting activity of the spell checker service.
*/
class SpellCheckerPreference extends Preference implements OnClickListener {
interface OnRadioButtonPreferenceListener {
/**
* Called when this preference needs to be saved its state.
*
* Note that this preference is non-persistent and needs explicitly to be saved its state.
* Because changing one IME state may change other IMEs' state, this is a place to update
* other IMEs' state as well.
*
* @param pref This preference.
*/
public void onRadioButtonClicked(SpellCheckerPreference pref);
}
private final SpellCheckerInfo mSci;
private final OnRadioButtonPreferenceListener mOnRadioButtonListener;
private RadioButton mRadioButton;
private View mPrefLeftButton;
private View mSettingsButton;
private boolean mSelected;
public SpellCheckerPreference(final Context context, final SpellCheckerInfo sci,
final OnRadioButtonPreferenceListener onRadioButtonListener) {
super(context, null, 0);
setPersistent(false);
setLayoutResource(R.layout.preference_spellchecker);
setWidgetLayoutResource(R.layout.preference_spellchecker_widget);
mSci = sci;
mOnRadioButtonListener = onRadioButtonListener;
setKey(sci.getId());
setTitle(sci.loadLabel(context.getPackageManager()));
final String settingsActivity = mSci.getSettingsActivity();
if (TextUtils.isEmpty(settingsActivity)) {
setIntent(null);
} else {
final Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClassName(mSci.getPackageName(), settingsActivity);
setIntent(intent);
}
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
mRadioButton = (RadioButton)view.findViewById(R.id.pref_radio);
mPrefLeftButton = view.findViewById(R.id.pref_left_button);
mPrefLeftButton.setOnClickListener(this);
mSettingsButton = view.findViewById(R.id.pref_right_button);
mSettingsButton.setOnClickListener(this);
updateSelectedState(mSelected);
}
@Override
public void onClick(final View v) {
if (v == mPrefLeftButton) {
mOnRadioButtonListener.onRadioButtonClicked(this);
return;
}
if (v == mSettingsButton) {
onSettingsButtonClicked();
return;
}
}
private void onSettingsButtonClicked() {
final Context context = getContext();
try {
final Intent intent = getIntent();
if (intent != null) {
// Invoke a settings activity of an spell checker.
context.startActivity(intent);
}
} catch (final ActivityNotFoundException e) {
final String message = context.getString(R.string.failed_to_open_app_settings_toast,
mSci.loadLabel(context.getPackageManager()));
Toast.makeText(context, message, Toast.LENGTH_LONG).show();
}
}
public SpellCheckerInfo getSpellCheckerInfo() {
return mSci;
}
public void setSelected(final boolean selected) {
mSelected = selected;
updateSelectedState(selected);
}
private void updateSelectedState(final boolean selected) {
if (mRadioButton != null) {
mRadioButton.setChecked(selected);
enableSettingsButton(isEnabled() && selected);
}
}
private void enableSettingsButton(final boolean enabled) {
if (mSettingsButton == null) {
return;
}
if (getIntent() == null) {
mSettingsButton.setVisibility(View.GONE);
} else {
mSettingsButton.setEnabled(enabled);
mSettingsButton.setClickable(enabled);
mSettingsButton.setFocusable(enabled);
if (!enabled) {
mSettingsButton.setAlpha(Utils.DISABLED_ALPHA);
}
}
}
}
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