source: trunk/hiptop/pester/net/sabi/pester/MessageFinder.java@ 299

package net.sabi.pester;

import danger.app.Application;
import danger.text.Collator;
import danger.text.DangerCollator;
import danger.ui.ListSelectMenu;
import danger.ui.MenuItem;
import danger.util.DEBUG;
import danger.util.TextFinder;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedList;
import java.util.ListIterator;
import java.util.Vector;

class MessageFinder implements TextFinder, Resources {
    private static final int VERSION_1 = 1;
    private static final int MAX_MESSAGE_COUNT = 50;
    private static LinkedList sMessageList = new LinkedList();
    private Vector mItems;

    public static void setDefaultMessageList() {
        String messages[] =
            Application.getCurrentApp().getStringArray(ID_ALARM_MESSAGES);
        sMessageList = new LinkedList(Arrays.asList(messages));
    }

    public static byte[] messageListAsByteArray() {
        try {
            ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
            DataOutputStream dataStream = new DataOutputStream(byteStream);

            dataStream.writeByte(VERSION_1);
            dataStream.writeInt(sMessageList.size());
            ListIterator i = sMessageList.listIterator(0);
            while (i.hasNext())
                dataStream.writeUTF((String)i.next());
            dataStream.flush();
            return byteStream.toByteArray();
        } catch (Exception e) {
            DEBUG.p("Pester: couldn't serialize message list: " + e);
        }
        return null;
    }

    public static void setMessageListFromByteArray(byte[] data) {
        try {
            ByteArrayInputStream byteStream = new ByteArrayInputStream(data);
            DataInputStream dataStream = new DataInputStream(byteStream);
            
            byte version = dataStream.readByte();
            if (version != VERSION_1)
                throw new Exception();
            
            int count = dataStream.readInt();
            for (int i = 0 ; i < count ; i++)
                addMessage(dataStream.readUTF());
        } catch (Exception e) {
            setDefaultMessageList();
            DEBUG.p("Pester: setting default message list: " + e);
        }
    }

    private static boolean addMessage(String message) {
        int i = sMessageList.indexOf(message);
        if (i == 0)
            return false;
        if (i != -1)
            sMessageList.remove(i);
        sMessageList.addFirst(message);
        if (sMessageList.size() > MAX_MESSAGE_COUNT)
            sMessageList.removeLast();
        return true;
    }

    public static void usedMessage(String message) {
        if (!addMessage(message))
            return;
        Alarms.recentMessagesChanged();
    }

    public MessageFinder() {
        mItems = new Vector(sMessageList.size() / 2);
    }

    public void search(ListSelectMenu menu, String key) {
        DangerCollator collator = (DangerCollator)DangerCollator.getInstance();
        mItems.removeAllElements();
        ListIterator i = sMessageList.listIterator(0);
        while (i.hasNext()) {
            String message = (String)i.next();
            if (collator.startsWith(message, key, Collator.PRIMARY)) {
                mItems.addElement(new MenuItem(message));
            }
        }
        Collections.sort(mItems);
        menu.makeResultInclusive(true);
        menu.updateMenuContents(mItems);
    }
}