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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.voice;
import android.app.AlertDialog;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.preference.Preference;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Checkable;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import com.android.settings.R;
import com.android.settings.Utils;
public final class VoiceInputPreference extends Preference {
private static final String TAG = "VoiceInputPreference";
private final CharSequence mLabel;
private final CharSequence mAppLabel;
private final CharSequence mAlertText;
private final ComponentName mSettingsComponent;
/**
* 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 View mSettingsIcon;
private RadioButton mRadioButton;
private final CompoundButton.OnCheckedChangeListener mRadioChangeListener =
new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
onRadioButtonClicked(buttonView, isChecked);
}
};
public VoiceInputPreference(Context context, VoiceInputHelper.BaseInfo info,
CharSequence summary, CharSequence alertText, RadioButtonGroupState state) {
super(context);
setLayoutResource(R.layout.preference_tts_engine);
mSharedState = state;
mLabel = info.label;
mAppLabel = info.appLabel;
mAlertText = alertText;
mSettingsComponent = info.settings;
mPreventRadioButtonCallbacks = false;
setKey(info.key);
setTitle(info.label);
setSummary(summary);
}
@Override
public View getView(View convertView, ViewGroup parent) {
if (mSharedState == null) {
throw new IllegalStateException("Call to getView() before a call to" +
"setSharedState()");
}
View view = super.getView(convertView, parent);
final RadioButton rb = (RadioButton) view.findViewById(R.id.tts_engine_radiobutton);
rb.setOnCheckedChangeListener(mRadioChangeListener);
boolean isChecked = getKey().equals(mSharedState.getCurrentKey());
if (isChecked) {
mSharedState.setCurrentChecked(rb);
}
mPreventRadioButtonCallbacks = true;
rb.setChecked(isChecked);
mPreventRadioButtonCallbacks = false;
mRadioButton = rb;
View textLayout = view.findViewById(R.id.tts_engine_pref_text);
textLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!rb.isChecked()) {
onRadioButtonClicked(rb, true);
}
}
});
mSettingsIcon = view.findViewById(R.id.tts_engine_settings);
mSettingsIcon.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setComponent(mSettingsComponent);
getContext().startActivity(new Intent(intent));
}
});
updateCheckedState(isChecked);
return view;
}
private boolean shouldDisplayAlert() {
return mAlertText != null;
}
private void displayAlert(
final DialogInterface.OnClickListener positiveOnClickListener,
final DialogInterface.OnClickListener negativeOnClickListener) {
Log.i(TAG, "Displaying data alert for :" + getKey());
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
String msg = String.format(getContext().getResources().getConfiguration().locale,
mAlertText.toString(), mAppLabel);
builder.setTitle(android.R.string.dialog_alert_title)
.setMessage(msg)
.setCancelable(true)
.setPositiveButton(android.R.string.ok, positiveOnClickListener)
.setNegativeButton(android.R.string.cancel, negativeOnClickListener)
.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override public void onCancel(DialogInterface dialog) {
negativeOnClickListener.onClick(dialog, DialogInterface.BUTTON_NEGATIVE);
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
public void doClick() {
mRadioButton.performClick();
}
void updateCheckedState(boolean isChecked) {
if (mSettingsComponent != null) {
mSettingsIcon.setVisibility(View.VISIBLE);
if (isChecked) {
mSettingsIcon.setEnabled(true);
mSettingsIcon.setAlpha(1);
} else {
mSettingsIcon.setEnabled(false);
mSettingsIcon.setAlpha(Utils.DISABLED_ALPHA);
}
} else {
mSettingsIcon.setVisibility(View.GONE);
}
}
void onRadioButtonClicked(final CompoundButton buttonView, boolean isChecked) {
if (mPreventRadioButtonCallbacks) {
return;
}
if (mSharedState.getCurrentChecked() == buttonView) {
updateCheckedState(isChecked);
return;
}
if (isChecked) {
// Should we alert user? if that's true, delay making engine current one.
if (shouldDisplayAlert()) {
displayAlert(new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
makeCurrentChecked(buttonView);
}
}, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// Undo the click.
buttonView.setChecked(false);
}
}
);
} else {
// Privileged engine, set it current
makeCurrentChecked(buttonView);
}
} else {
updateCheckedState(isChecked);
}
}
void makeCurrentChecked(Checkable current) {
if (mSharedState.getCurrentChecked() != null) {
mSharedState.getCurrentChecked().setChecked(false);
}
mSharedState.setCurrentChecked(current);
mSharedState.setCurrentKey(getKey());
updateCheckedState(true);
callChangeListener(mSharedState.getCurrentKey());
current.setChecked(true);
}
/**
* 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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