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/*
* Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.ui.dialog;
import java.util.ArrayList;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.util.QrCodeUtils;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.actionbarsherlock.app.SherlockDialogFragment;
public class ShareQrCodeDialogFragment extends SherlockDialogFragment {
private static final String ARG_CONTENT = "content";
private ImageView mImage;
private TextView mText;
private ArrayList<String> mContentList;
private int mCounter;
private static final int QR_CODE_SIZE = 1000;
/**
* Creates new instance of this dialog fragment
*
* @param content
* Content to be shared via QR Codes
* @return
*/
public static ShareQrCodeDialogFragment newInstance(String content) {
ShareQrCodeDialogFragment frag = new ShareQrCodeDialogFragment();
Bundle args = new Bundle();
args.putString(ARG_CONTENT, content);
frag.setArguments(args);
return frag;
}
/**
* Creates dialog
*/
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Activity activity = getActivity();
String content = getArguments().getString(ARG_CONTENT);
mContentList = splitString(content, 1000);
AlertDialog.Builder alert = new AlertDialog.Builder(activity);
alert.setTitle(R.string.menu_share_qr_code);
LayoutInflater inflater = activity.getLayoutInflater();
View view = inflater.inflate(R.layout.share_qr_code_dialog, null);
alert.setView(view);
mImage = (ImageView) view.findViewById(R.id.share_qr_code_dialog_image);
mText = (TextView) view.findViewById(R.id.share_qr_code_dialog_text);
// start with first
mCounter = 0;
updateQrCode();
// OnClickListener are set in onResume to prevent automatic dismissing of Dialogs
// http://stackoverflow.com/questions/2620444/how-to-prevent-a-dialog-from-closing-when-a-button-is-clicked
alert.setPositiveButton(R.string.btn_next, null);
alert.setNegativeButton(android.R.string.cancel, null);
return alert.create();
}
@Override
public void onResume() {
super.onResume();
AlertDialog alertDialog = (AlertDialog) getDialog();
final Button backButton = alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE);
final Button nextButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
backButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mCounter > 0) {
mCounter--;
updateQrCode();
updateDialog(backButton, nextButton);
} else {
dismiss();
}
}
});
nextButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mCounter < mContentList.size() - 1) {
mCounter++;
updateQrCode();
updateDialog(backButton, nextButton);
} else {
dismiss();
}
}
});
}
private void updateQrCode() {
// Content: <counter>,<size>,<content>
mImage.setImageBitmap(QrCodeUtils.getQRCodeBitmap(mCounter + "," + mContentList.size()
+ "," + mContentList.get(mCounter), QR_CODE_SIZE));
}
private void updateDialog(Button backButton, Button nextButton) {
if (mCounter == 0) {
backButton.setText(android.R.string.cancel);
} else {
backButton.setText(R.string.btn_back);
}
if (mCounter == mContentList.size() - 1) {
nextButton.setText(android.R.string.ok);
} else {
nextButton.setText(R.string.btn_next);
}
mText.setText(getResources().getString(R.string.share_qr_code_dialog_progress,
mCounter + 1, mContentList.size()));
}
/**
* Split String by number of characters
*
* @param text
* @param size
* @return
*/
private ArrayList<String> splitString(String text, int size) {
ArrayList<String> strings = new ArrayList<String>();
int index = 0;
while (index < text.length()) {
strings.add(text.substring(index, Math.min(index + size, text.length())));
index += size;
}
return strings;
}
}
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