Enable search for certificate lists (via SearchView in ActionBar)

src/frontends/android/res/values-de/strings.xml

@@ -22,6 +22,7 @@
     <string name="main_activity_name">strongSwan</string>
     <string name="reload_trusted_certs">CA-Zertifikate neu laden</string>
     <string name="show_log">Log anzeigen</string>
+    <string name="search">Suchen</string>
 
     <!-- Log view -->
     <string name="log_title">Log</string>

src/frontends/android/res/values/strings.xml

@@ -22,6 +22,7 @@
     <string name="main_activity_name">strongSwan</string>
     <string name="reload_trusted_certs">Reload CA certificates</string>
     <string name="show_log">View log</string>
+    <string name="search">Search</string>
 
     <!-- Log view -->
     <string name="log_title">Log</string>

src/frontends/android/src/org/strongswan/android/data/TrustedCertificateEntry.java

@@ -106,6 +106,20 @@ public class TrustedCertificateEntry implements Comparable<TrustedCertificateEnt
 		return mCert;
 	}
 
+	@Override
+	public String toString()
+	{	/* combination of both subject lines, used for filtering lists */
+		if (mString == null)
+		{
+			mString = mSubjectPrimary;
+			if (!mSubjectSecondary.isEmpty())
+			{
+				mString += ", " + mSubjectSecondary;
+			}
+		}
+		return mString;
+	}
+
 	@Override
 	public int compareTo(TrustedCertificateEntry another)
 	{

src/frontends/android/src/org/strongswan/android/ui/TrustedCertificateListFragment.java

@@ -34,10 +34,16 @@ import android.content.AsyncTaskLoader;
 import android.content.Context;
 import android.content.Loader;
 import android.os.Bundle;
+import android.text.TextUtils;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.widget.ListView;
+import android.widget.SearchView;
+import android.widget.SearchView.OnQueryTextListener;
 
-public class TrustedCertificateListFragment extends ListFragment implements LoaderCallbacks<List<TrustedCertificateEntry>>
+public class TrustedCertificateListFragment extends ListFragment implements LoaderCallbacks<List<TrustedCertificateEntry>>, OnQueryTextListener
 {
 	private OnTrustedCertificateSelectedListener mListener;
 	private TrustedCertificateAdapter mAdapter;
@@ -54,6 +60,7 @@ public class TrustedCertificateListFragment extends ListFragment implements Load
 	public void onActivityCreated(Bundle savedInstanceState)
 	{
 		super.onActivityCreated(savedInstanceState);
+		setHasOptionsMenu(true);
 
 		setEmptyText(getString(R.string.no_certificates));
 
@@ -85,6 +92,32 @@ public class TrustedCertificateListFragment extends ListFragment implements Load
 		}
 	}
 
+	@Override
+	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater)
+	{
+		MenuItem item = menu.add(R.string.search);
+		item.setIcon(android.R.drawable.ic_menu_search);
+		item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
+
+		SearchView sv = new SearchView(getActivity());
+		sv.setOnQueryTextListener(this);
+		item.setActionView(sv);
+	}
+
+	@Override
+	public boolean onQueryTextSubmit(String query)
+	{	/* already handled when the text changes */
+		return true;
+	}
+
+	@Override
+	public boolean onQueryTextChange(String newText)
+	{
+		String search = TextUtils.isEmpty(newText) ? null : newText;
+		mAdapter.getFilter().filter(search);
+		return true;
+	}
+
 	@Override
 	public Loader<List<TrustedCertificateEntry>> onCreateLoader(int id, Bundle args)
 	{	/* we don't need the id as we have only one loader */