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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.tts;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.speech.tts.TextToSpeech.EngineInfo;
import androidx.preference.Preference;
import androidx.preference.PreferenceViewHolder;
import android.util.Log;
import android.widget.Checkable;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import com.android.settings.R;
import com.android.settings.SettingsActivity;
public class TtsEnginePreference extends Preference {
private static final String TAG = "TtsEnginePreference";
/**
* The engine information for the engine this preference represents.
* Contains it's name, label etc. which are used for display.
*/
private final EngineInfo mEngineInfo;
/**
* The shared radio button state, which button is checked etc.
*/
private final RadioButtonGroupState mSharedState;
/**
* When true, the change callbacks on the radio button will not
* fire.
*/
private volatile boolean mPreventRadioButtonCallbacks;
private RadioButton mRadioButton;
private Intent mVoiceCheckData;
private final CompoundButton.OnCheckedChangeListener mRadioChangeListener =
new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
onRadioButtonClicked(buttonView, isChecked);
}
};
public TtsEnginePreference(Context context, EngineInfo info, RadioButtonGroupState state,
SettingsActivity prefActivity) {
super(context);
setLayoutResource(R.layout.preference_tts_engine);
mSharedState = state;
mEngineInfo = info;
mPreventRadioButtonCallbacks = false;
setKey(mEngineInfo.name);
setTitle(mEngineInfo.label);
}
@Override
public void onBindViewHolder(PreferenceViewHolder view) {
super.onBindViewHolder(view);
if (mSharedState == null) {
throw new IllegalStateException("Call to getView() before a call to" +
"setSharedState()");
}
final RadioButton rb = (RadioButton) view.findViewById(R.id.tts_engine_radiobutton);
rb.setOnCheckedChangeListener(mRadioChangeListener);
rb.setText(mEngineInfo.label);
boolean isChecked = getKey().equals(mSharedState.getCurrentKey());
if (isChecked) {
mSharedState.setCurrentChecked(rb);
}
mPreventRadioButtonCallbacks = true;
rb.setChecked(isChecked);
mPreventRadioButtonCallbacks = false;
mRadioButton = rb;
}
public void setVoiceDataDetails(Intent data) {
mVoiceCheckData = data;
}
private boolean shouldDisplayDataAlert() {
return !mEngineInfo.system;
}
private void displayDataAlert(
DialogInterface.OnClickListener positiveOnClickListener,
DialogInterface.OnClickListener negativeOnClickListener) {
Log.i(TAG, "Displaying data alert for :" + mEngineInfo.name);
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setTitle(android.R.string.dialog_alert_title)
.setMessage(getContext().getString(
R.string.tts_engine_security_warning, mEngineInfo.label))
.setCancelable(true)
.setPositiveButton(android.R.string.ok, positiveOnClickListener)
.setNegativeButton(android.R.string.cancel, negativeOnClickListener);
AlertDialog dialog = builder.create();
dialog.show();
}
private void onRadioButtonClicked(final CompoundButton buttonView,
boolean isChecked) {
if (mPreventRadioButtonCallbacks ||
(mSharedState.getCurrentChecked() == buttonView)) {
return;
}
if (isChecked) {
// Should we alert user? if that's true, delay making engine current one.
if (shouldDisplayDataAlert()) {
displayDataAlert(new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
makeCurrentEngine(buttonView);
}
},new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// Undo the click.
buttonView.setChecked(false);
}
});
} else {
// Privileged engine, set it current
makeCurrentEngine(buttonView);
}
}
}
private void makeCurrentEngine(Checkable current) {
if (mSharedState.getCurrentChecked() != null) {
mSharedState.getCurrentChecked().setChecked(false);
}
mSharedState.setCurrentChecked(current);
mSharedState.setCurrentKey(getKey());
callChangeListener(mSharedState.getCurrentKey());
}
/**
* Holds all state that is common to this group of radio buttons, such
* as the currently selected key and the currently checked compound button.
* (which corresponds to this key).
*/
public interface RadioButtonGroupState {
String getCurrentKey();
Checkable getCurrentChecked();
void setCurrentKey(String key);
void setCurrentChecked(Checkable current);
}
}
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