/*
* Copyright (C) 2013 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.talkback.labeling;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.content.FileProvider;
import android.text.TextUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.talkback.BuildConfig;
import com.android.talkback.R;
import com.android.utils.LogUtils;
import com.android.utils.labeling.CustomLabelManager;
import com.android.utils.labeling.LabelProviderClient;
import com.android.utils.labeling.PackageLabelInfo;
import java.io.File;
import java.util.List;
/**
* An activity for displaying a summary of custom labels in TalkBack.
*/
public class LabelManagerSummaryActivity extends Activity {
/** Labeling requires new accessibility APIs in JellyBean MR2 (API 18). */
public static final int MIN_API_LEVEL = Build.VERSION_CODES.JELLY_BEAN_MR2;
private static final int SELECT_LABEL_FILE_REQUEST = 0;
/** File provider for custom label share intent. */
private static final String FILE_AUTHORITY =
BuildConfig.APPLICATION_ID + ".providers.FileProvider";
private LabelProviderClient mLabelProviderClient;
private ListView mPackageList;
private TextView mNoPackagesMessage;
private View mRevertButton;
private CustomLabelManager mLabelManager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.label_manager_packages);
getActionBar().setDisplayHomeAsUpEnabled(true);
mPackageList = (ListView) findViewById(R.id.package_list);
mNoPackagesMessage = (TextView) findViewById(R.id.no_packages_message);
mRevertButton = findViewById(R.id.revert_import);
mRevertButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mLabelManager.revertImportedLabels(
new RevertImportedLabelsRequest.OnImportLabelsRevertedListener() {
@Override
public void onImportLabelsReverted() {
if (isDestroyed()) {
return;
}
checkImportedLabels();
updatePackageSummary();
Toast.makeText(getApplicationContext(), R.string.imported_labels_reverted,
Toast.LENGTH_SHORT).show();
}
});
}
});
mLabelProviderClient = new LabelProviderClient(this, LabelProvider.AUTHORITY);
mLabelManager = new CustomLabelManager(this);
addImportCustomLabelClickListener();
addExportCustomLabelClickListener();
}
private void checkImportedLabels() {
mRevertButton.setEnabled(false);
mLabelManager.hasImportedLabels(new HasImportedLabelsRequest.OnHasImportedLabelsCompleteListener() {
@Override
public void onHasImportedRequestCompleted(boolean hasImportedLabels) {
if (isDestroyed()) {
return;
}
mRevertButton.setEnabled(hasImportedLabels);
}
});
}
@Override
protected void onResume() {
super.onResume();
checkImportedLabels();
updatePackageSummary();
}
@Override
protected void onDestroy() {
super.onDestroy();
mLabelProviderClient.shutdown();
mLabelManager.shutdown();
}
/**
* Finishes the activity when the up button is pressed on the action bar.
*/
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/**
* Fetches an updated package summary from the content provider and updates
* the adapter.
*/
private void updatePackageSummary() {
new UpdatePackageSummaryTask().execute();
}
/**
* An adapter that processes information about packages and their labels.
*/
private class PackageLabelInfoAdapter extends ArrayAdapter<PackageLabelInfo> {
private final LayoutInflater mLayoutInflater;
public PackageLabelInfoAdapter(Context context, int textViewResourceId,
List<PackageLabelInfo> items) {
super(context, textViewResourceId, items);
mLayoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public View getView(int position, View view, ViewGroup parent) {
if (view == null) {
view = mLayoutInflater.inflate(R.layout.label_manager_package_row, parent, false);
}
final PackageLabelInfo packageLabelInfo = getItem(position);
if (packageLabelInfo == null) {
return view;
}
final PackageManager packageManager = getPackageManager();
final String packageName = packageLabelInfo.getPackageName();
CharSequence applicationLabel = null;
Drawable applicationIcon = null;
try {
final PackageInfo packageInfo = packageManager.getPackageInfo(packageName, 0);
applicationLabel = packageManager.getApplicationLabel(packageInfo.applicationInfo);
applicationIcon = packageManager.getApplicationIcon(packageName);
} catch (NameNotFoundException e) {
LogUtils.log(this, Log.INFO, "Could not load package info for package %s.",
packageLabelInfo.getPackageName());
} finally {
if (TextUtils.isEmpty(applicationLabel)) {
applicationLabel = packageName;
}
if (applicationIcon == null) {
applicationIcon = packageManager.getDefaultActivityIcon();
}
}
final TextView textView = (TextView) view.findViewById(R.id.package_label_info_text);
textView.setText(applicationLabel);
final TextView countView = (TextView) view.findViewById(R.id.package_label_info_count);
countView.setText(Integer.toString(packageLabelInfo.getLabelCount()));
final ImageView iconImage = (ImageView) view.findViewById(R.id.icon_image);
iconImage.setImageDrawable(applicationIcon);
final Intent packageActivityIntent = new Intent(LabelManagerSummaryActivity.this,
LabelManagerPackageActivity.class);
packageActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
packageActivityIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
packageActivityIntent.putExtra(LabelManagerPackageActivity.EXTRA_PACKAGE_NAME,
packageName);
view.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
startActivity(packageActivityIntent);
}
});
return view;
}
}
/**
* A task for getting a package summary and updating the adapter.
*/
private class UpdatePackageSummaryTask extends AsyncTask<Void, Void, List<PackageLabelInfo>> {
private String mLocale;
@Override
protected void onPreExecute() {
mLocale = CustomLabelManager.getDefaultLocale();
}
@Override
protected List<PackageLabelInfo> doInBackground(Void... params) {
LogUtils.log(this, Log.VERBOSE, "Spawning new UpdatePackageSummaryTask(%d) for %s.",
hashCode(), mLocale);
return mLabelProviderClient.getPackageSummary(mLocale);
}
@Override
protected void onPostExecute(List<PackageLabelInfo> result) {
if (result != null && result.size() > 0) {
mPackageList.setAdapter(new PackageLabelInfoAdapter(
LabelManagerSummaryActivity.this, R.layout.label_manager_package_row,
result));
mPackageList.setVisibility(View.VISIBLE);
mNoPackagesMessage.setVisibility(View.GONE);
} else {
mPackageList.setVisibility(View.GONE);
mNoPackagesMessage.setVisibility(View.VISIBLE);
}
}
}
private void addImportCustomLabelClickListener() {
final Button importLabel = (Button) findViewById(R.id.import_labels);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2) {
importLabel.setVisibility(View.GONE);
return;
}
importLabel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent importIntent = new Intent();
importIntent.setAction(Intent.ACTION_GET_CONTENT);
importIntent.setType("application/json");
importIntent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(importIntent, SELECT_LABEL_FILE_REQUEST);
}
});
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == SELECT_LABEL_FILE_REQUEST && data != null) {
Uri selectedFile = data.getData();
Intent launchImportIntent = new Intent(this, LabelImportActivity.class);
launchImportIntent.setData(selectedFile);
startActivity(launchImportIntent);
}
}
private void addExportCustomLabelClickListener() {
final Button exportLabel = (Button) findViewById(R.id.export_labels);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2) {
exportLabel.setVisibility(View.GONE);
return;
}
exportLabel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
CustomLabelMigrationManager exporter = new CustomLabelMigrationManager(
getApplicationContext());
exporter.exportLabels(
new CustomLabelMigrationManager.SimpleLabelMigrationCallback() {
@Override
public void onLabelsExported(File file) {
if (file == null) {
notifyLabelExportFailure();
return;
}
Uri uri = FileProvider.getUriForFile(getApplicationContext(),
FILE_AUTHORITY, file);
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
shareIntent.setType("application/json");
String activityTitle = getResources().getString(
R.string.label_choose_app_to_export);
startActivity(Intent.createChooser(shareIntent, activityTitle));
}
@Override
public void onFail() {
notifyLabelExportFailure();
}
});
return;
}
});
}
private void notifyLabelExportFailure() {
Toast.makeText(getApplicationContext(), R.string.label_export_failed, Toast.LENGTH_SHORT)
.show();
}
}