Added simple adapter for trusted certificates (to be used with a Spinner widget)

src/frontends/android/res/layout/trusted_certificates_item.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2012 Tobias Brunner
+    Copyright (C) 2012 Giuliano Grassi
+    Copyright (C) 2012 Ralf Sager
+    Hochschule fuer Technik Rapperswil
+
+    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 2 of the License, or (at your
+    option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+
+    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.
+-->
+<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical" >
+
+    <TextView
+        android:id="@+id/certificate_name"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:textSize="18sp" />
+
+</TableLayout>

src/frontends/android/src/org/strongswan/android/ui/adapter/TrustedCertificateAdapter.java

@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2012 Tobias Brunner
+ * Copyright (C) 2012 Giuliano Grassi
+ * Copyright (C) 2012 Ralf Sager
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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.
+ */
+
+package org.strongswan.android.ui.adapter;
+
+import java.security.cert.X509Certificate;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Hashtable;
+import java.util.Map.Entry;
+
+import org.strongswan.android.R;
+
+import android.content.Context;
+import android.net.http.SslCertificate;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.TextView;
+
+public class TrustedCertificateAdapter extends BaseAdapter
+{
+	private final ArrayList<CertEntry> mContent;
+	private final Context mContext;
+
+	public class CertEntry implements Comparable<CertEntry>
+	{
+		public X509Certificate mCert;
+		public String mAlias;
+		public String mDisplayName;
+
+		public CertEntry(String alias, X509Certificate cert)
+		{
+			mCert = cert;
+			mAlias = alias;
+		}
+
+		public String getDisplayText()
+		{
+			if (mDisplayName == null)
+			{
+				SslCertificate cert = new SslCertificate(mCert);
+				String o = cert.getIssuedTo().getOName();
+				String ou = cert.getIssuedTo().getUName();
+				String cn = cert.getIssuedTo().getCName();
+				if (!o.isEmpty())
+				{
+					mDisplayName = o;
+					if (!cn.isEmpty())
+					{
+						mDisplayName = mDisplayName + ", " + cn;
+					}
+					else if (!ou.isEmpty())
+					{
+						mDisplayName = mDisplayName + ", " + ou;
+					}
+				}
+				else if (!cn.isEmpty())
+				{
+					mDisplayName = cn;
+				}
+				else
+				{
+					mDisplayName = cert.getIssuedTo().getDName();
+				}
+			}
+			return mDisplayName;
+		}
+
+		@Override
+		public int compareTo(CertEntry another)
+		{
+			return getDisplayText().compareToIgnoreCase(another.getDisplayText());
+		}
+	}
+
+	public TrustedCertificateAdapter(Context context,
+											Hashtable<String, X509Certificate> content)
+	{
+		mContext = context;
+		mContent = new ArrayList<TrustedCertificateAdapter.CertEntry>();
+		for (Entry<String, X509Certificate> entry : content.entrySet())
+		{
+			mContent.add(new CertEntry(entry.getKey(), entry.getValue()));
+		}
+		Collections.sort(mContent);
+	}
+
+	@Override
+	public int getCount()
+	{
+		return mContent.size();
+	}
+
+	@Override
+	public Object getItem(int position)
+	{
+		return mContent.get(position);
+	}
+
+	/**
+	 * Returns the position (index) of the entry with the given alias.
+	 *
+	 * @param alias alias of the item to find
+	 * @return the position (index) in the list
+	 */
+	public int getItemPosition(String alias)
+	{
+		for (int i = 0; i < mContent.size(); i++)
+		{
+			if (mContent.get(i).mAlias.equals(alias))
+			{
+				return i;
+			}
+		}
+		return -1;
+	}
+
+	@Override
+	public long getItemId(int position)
+	{
+		return position;
+	}
+
+	@Override
+	public View getView(int position, View convertView, ViewGroup parent)
+	{
+		LayoutInflater inflater = LayoutInflater.from(mContext);
+		final View certView = inflater.inflate(R.layout.trusted_certificates_item, null);
+		final TextView certText = (TextView)certView.findViewById(R.id.certificate_name);
+		certText.setText(mContent.get(position).getDisplayText());
+		return certView;
+	}
+}