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/*
* Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
*
* 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 org.openintents.openpgp;
import java.util.ArrayList;
import java.util.List;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.TextView;
public class OpenPgpListPreference extends DialogPreference {
ArrayList<OpenPgpProviderEntry> mProviderList = new ArrayList<OpenPgpProviderEntry>();
private String mSelectedPackage;
public OpenPgpListPreference(Context context, AttributeSet attrs) {
super(context, attrs);
List<ResolveInfo> resInfo = context.getPackageManager().queryIntentServices(
new Intent(OpenPgpConstants.SERVICE_INTENT), PackageManager.GET_META_DATA);
if (!resInfo.isEmpty()) {
for (ResolveInfo resolveInfo : resInfo) {
if (resolveInfo.serviceInfo == null)
continue;
String packageName = resolveInfo.serviceInfo.packageName;
String simpleName = String.valueOf(resolveInfo.serviceInfo.loadLabel(context
.getPackageManager()));
Drawable icon = resolveInfo.serviceInfo.loadIcon(context.getPackageManager());
// get api version
ServiceInfo si = resolveInfo.serviceInfo;
int apiVersion = si.metaData.getInt("api_version");
mProviderList.add(new OpenPgpProviderEntry(packageName, simpleName, icon,
apiVersion));
}
}
}
public OpenPgpListPreference(Context context) {
this(context, null);
}
/**
* Can be used to add "no selection"
*
* @param packageName
* @param simpleName
* @param icon
*/
public void addProvider(int position, String packageName, String simpleName, Drawable icon,
int apiVersion) {
mProviderList.add(position, new OpenPgpProviderEntry(packageName, simpleName, icon,
apiVersion));
}
@Override
protected void onPrepareDialogBuilder(Builder builder) {
// Init ArrayAdapter with OpenPGP Providers
ListAdapter adapter = new ArrayAdapter<OpenPgpProviderEntry>(getContext(),
android.R.layout.select_dialog_singlechoice, android.R.id.text1, mProviderList) {
public View getView(int position, View convertView, ViewGroup parent) {
// User super class to create the View
View v = super.getView(position, convertView, parent);
TextView tv = (TextView) v.findViewById(android.R.id.text1);
// Put the image on the TextView
tv.setCompoundDrawablesWithIntrinsicBounds(mProviderList.get(position).icon, null,
null, null);
// Add margin between image and text (support various screen densities)
int dp10 = (int) (10 * getContext().getResources().getDisplayMetrics().density + 0.5f);
tv.setCompoundDrawablePadding(dp10);
// disable if it has the wrong api_version
if (mProviderList.get(position).apiVersion == OpenPgpConstants.REQUIRED_API_VERSION) {
tv.setEnabled(true);
} else {
tv.setEnabled(false);
tv.setText(tv.getText() + " (API v" + mProviderList.get(position).apiVersion
+ ", needs v" + OpenPgpConstants.REQUIRED_API_VERSION + ")");
}
return v;
}
};
builder.setSingleChoiceItems(adapter, getIndexOfProviderList(getValue()),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
mSelectedPackage = mProviderList.get(which).packageName;
/*
* Clicking on an item simulates the positive button click, and dismisses
* the dialog.
*/
OpenPgpListPreference.this.onClick(dialog, DialogInterface.BUTTON_POSITIVE);
dialog.dismiss();
}
});
/*
* The typical interaction for list-based dialogs is to have click-on-an-item dismiss the
* dialog instead of the user having to press 'Ok'.
*/
builder.setPositiveButton(null, null);
}
@Override
protected void onDialogClosed(boolean positiveResult) {
super.onDialogClosed(positiveResult);
if (positiveResult && (mSelectedPackage != null)) {
if (callChangeListener(mSelectedPackage)) {
setValue(mSelectedPackage);
}
}
}
private int getIndexOfProviderList(String packageName) {
for (OpenPgpProviderEntry app : mProviderList) {
if (app.packageName.equals(packageName)) {
return mProviderList.indexOf(app);
}
}
return -1;
}
public void setValue(String packageName) {
mSelectedPackage = packageName;
persistString(packageName);
}
public String getValue() {
return mSelectedPackage;
}
public String getEntry() {
return getEntryByValue(mSelectedPackage);
}
public String getEntryByValue(String packageName) {
for (OpenPgpProviderEntry app : mProviderList) {
if (app.packageName.equals(packageName)) {
return app.simpleName;
}
}
return null;
}
private static class OpenPgpProviderEntry {
private String packageName;
private String simpleName;
private Drawable icon;
private int apiVersion;
public OpenPgpProviderEntry(String packageName, String simpleName, Drawable icon,
int apiVersion) {
this.packageName = packageName;
this.simpleName = simpleName;
this.icon = icon;
this.apiVersion = apiVersion;
}
@Override
public String toString() {
return simpleName;
}
}
}
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