open-keychain/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/HelpFragmentHtml.java

110 lines
3.6 KiB
Java

/*
* 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;
import java.io.IOException;
import java.io.InputStream;
import net.nightwhistler.htmlspanner.HtmlSpanner;
import net.nightwhistler.htmlspanner.JellyBeanSpanFixTextView;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.helper.OtherHelper;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.R;
import android.app.Activity;
import android.os.Bundle;
import android.text.method.LinkMovementMethod;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ScrollView;
import com.actionbarsherlock.app.SherlockFragment;
public class HelpFragmentHtml extends SherlockFragment {
private Activity mActivity;
private int htmlFile;
public static final String ARG_HTML_FILE = "htmlFile";
/**
* Create a new instance of HelpFragmentHtml, providing "htmlFile" as an argument.
*/
static HelpFragmentHtml newInstance(int htmlFile) {
HelpFragmentHtml f = new HelpFragmentHtml();
// Supply html raw file input as an argument.
Bundle args = new Bundle();
args.putInt(ARG_HTML_FILE, htmlFile);
f.setArguments(args);
return f;
}
/**
* Workaround for Android Bug. See
* http://stackoverflow.com/questions/8748064/starting-activity-from
* -fragment-causes-nullpointerexception
*/
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
setUserVisibleHint(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
htmlFile = getArguments().getInt(ARG_HTML_FILE);
// load html from html file from /res/raw
InputStream inputStreamText = getResources().openRawResource(htmlFile);
mActivity = getActivity();
ScrollView scroller = new ScrollView(mActivity);
JellyBeanSpanFixTextView text = new JellyBeanSpanFixTextView(mActivity);
// padding
int padding = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 16, mActivity
.getResources().getDisplayMetrics());
text.setPadding(padding, padding, padding, 0);
scroller.addView(text);
// load html into textview
HtmlSpanner htmlSpanner = new HtmlSpanner();
htmlSpanner.setStripExtraWhiteSpace(true);
try {
text.setText(htmlSpanner.fromHtml(inputStreamText));
} catch (IOException e) {
Log.e(Constants.TAG, "Error while reading raw resources as stream", e);
}
// make links work
text.setMovementMethod(LinkMovementMethod.getInstance());
// no flickering when clicking textview for Android < 4
text.setTextColor(getResources().getColor(android.R.color.black));
return scroller;
}
}