android: Add fragment for a list of remediation instructions

This fragment can later be used in one- or two-pane layouts.

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

@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2013 Tobias Brunner
+ * 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;
+
+import java.util.ArrayList;
+
+import org.strongswan.android.logic.imc.RemediationInstruction;
+import org.strongswan.android.ui.adapter.RemediationInstructionAdapter;
+
+import android.app.Activity;
+import android.app.ListFragment;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ListView;
+
+public class RemediationInstructionsFragment extends ListFragment
+{
+	public static final String EXTRA_REMEDIATION_INSTRUCTIONS = "instructions";
+	private static final String KEY_POSITION = "position";
+	private ArrayList<RemediationInstruction> mInstructions = null;
+	private OnRemediationInstructionSelectedListener mListener;
+	private RemediationInstructionAdapter mAdapter;
+	private int mCurrentPosition = -1;
+
+	/**
+	 * The activity containing this fragment should implement this interface
+	 */
+	public interface OnRemediationInstructionSelectedListener
+	{
+		public void onRemediationInstructionSelected(RemediationInstruction instruction);
+	}
+
+	@Override
+	public void onActivityCreated(Bundle savedInstanceState)
+	{
+		super.onActivityCreated(savedInstanceState);
+
+		if (savedInstanceState != null)
+		{
+			mInstructions = savedInstanceState.getParcelableArrayList(EXTRA_REMEDIATION_INSTRUCTIONS);
+			mCurrentPosition = savedInstanceState.getInt(KEY_POSITION);
+		}
+	}
+
+	@Override
+	public void onSaveInstanceState(Bundle outState)
+	{
+		super.onSaveInstanceState(outState);
+		outState.putParcelableArrayList(RemediationInstructionsFragment.EXTRA_REMEDIATION_INSTRUCTIONS, mInstructions);
+		outState.putInt(KEY_POSITION, mCurrentPosition);
+	}
+
+	@Override
+	public void onAttach(Activity activity)
+	{
+		super.onAttach(activity);
+
+		if (activity instanceof OnRemediationInstructionSelectedListener)
+		{
+			mListener = (OnRemediationInstructionSelectedListener)activity;
+		}
+	}
+
+	@Override
+	public void onStart()
+	{
+		super.onStart();
+
+		boolean two_pane = false;
+		if (two_pane)
+		{	/* two-pane layout, make list items selectable */
+			getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
+		}
+
+		Bundle args = getArguments();
+		if (mInstructions == null && args != null)
+		{
+			mInstructions = args.getParcelableArrayList(EXTRA_REMEDIATION_INSTRUCTIONS);
+		}
+		updateView(mInstructions);
+
+		if (two_pane && mCurrentPosition == -1 && mInstructions.size() > 0)
+		{	/* two-pane layout, select first instruction */
+			mCurrentPosition = 0;
+			mListener.onRemediationInstructionSelected(mInstructions.get(0));
+		}
+		getListView().setItemChecked(mCurrentPosition, true);
+	}
+
+	@Override
+	public void onListItemClick(ListView l, View v, int position, long id)
+	{
+		mCurrentPosition = position;
+		mListener.onRemediationInstructionSelected(mInstructions.get(position));
+		getListView().setItemChecked(position, true);
+	}
+
+	public void updateView(ArrayList<RemediationInstruction> instructions)
+	{
+		if (mAdapter == null)
+		{
+			mAdapter = new RemediationInstructionAdapter(getActivity());
+			setListAdapter(mAdapter);
+		}
+		mInstructions = instructions;
+		mAdapter.setData(mInstructions);
+	}
+}