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/*
* Copyright (C) 2012 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 android.app.ListFragment;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.AsyncTaskLoader;
import android.content.Context;
import android.content.Loader;
import android.hardware.input.InputManager;
import android.hardware.input.KeyboardLayout;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.util.Arrays;
public class KeyboardLayoutPicker extends ListFragment
implements LoaderCallbacks<KeyboardLayout[]> {
private static final String TAG = "KeyboardLayoutPicker";
private String mInputDeviceDescriptor;
/**
* Intent extra: The input device descriptor of the keyboard whose keyboard
* layout is to be changed.
*/
public static final String EXTRA_INPUT_DEVICE_DESCRIPTOR = "input_device_descriptor";
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mInputDeviceDescriptor = getActivity().getIntent().getStringExtra(
EXTRA_INPUT_DEVICE_DESCRIPTOR);
if (mInputDeviceDescriptor == null) {
Log.e(TAG, "Missing expected intent parameter: " + EXTRA_INPUT_DEVICE_DESCRIPTOR);
getActivity().finish();
}
setEmptyText(getActivity().getText(R.string.keyboard_layout_picker_empty_text));
getLoaderManager().initLoader(0, null, this);
}
@Override
public void onResume() {
super.onResume();
getListView().requestFocus();
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
if (mInputDeviceDescriptor != null) {
KeyboardLayout c = (KeyboardLayout)l.getItemAtPosition(position);
InputManager im = (InputManager)getActivity().getSystemService(Context.INPUT_SERVICE);
im.setKeyboardLayoutForInputDevice(mInputDeviceDescriptor, c.getDescriptor());
}
getActivity().finish();
}
@Override
public Loader<KeyboardLayout[]> onCreateLoader(int id, Bundle args) {
return new KeyboardLayoutLoader(getActivity());
}
@Override
public void onLoadFinished(Loader<KeyboardLayout[]> loader,
KeyboardLayout[] data) {
setListAdapter(new KeyboardLayoutAdapter(getActivity(), data));
}
@Override
public void onLoaderReset(Loader<KeyboardLayout[]> loader) {
setListAdapter(null);
}
private static final class KeyboardLayoutAdapter
extends ArrayAdapter<KeyboardLayout> {
public KeyboardLayoutAdapter(Context context, KeyboardLayout[] list) {
super(context, android.R.layout.simple_list_item_1, list);
}
}
private static final class KeyboardLayoutLoader
extends AsyncTaskLoader<KeyboardLayout[]> {
public KeyboardLayoutLoader(Context context) {
super(context);
}
@Override
public KeyboardLayout[] loadInBackground() {
InputManager im = (InputManager)getContext().getSystemService(Context.INPUT_SERVICE);
KeyboardLayout[] list = im.getKeyboardLayouts();
KeyboardLayout[] listWithDefault = new KeyboardLayout[list.length + 1];
listWithDefault[0] = new KeyboardLayout(null,
getContext().getString(R.string.keyboard_layout_default_label));
System.arraycopy(list, 0, listWithDefault, 1, list.length);
Arrays.sort(listWithDefault);
return listWithDefault;
}
@Override
protected void onStartLoading() {
super.onStartLoading();
forceLoad();
}
@Override
protected void onStopLoading() {
super.onStopLoading();
cancelLoad();
}
}
}
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