PDAList.java

/*
    GNU General Public License
    CacheWolf is a software for PocketPC, Win and Linux that
    enables paperless caching.
    It supports the sites geocaching.com and opencaching.de

    Copyright (C) 2006  CacheWolf development team
	See http://www.cachewolf.de/ for more information.
    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; version 2 of the License.

    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, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
package CacheWolf.view.pda;

import CacheWolf.Preferences;
import CacheWolf.model.DefaultListModel;
import CacheWolf.utils.MyLocale;
import ewe.sys.Vm;
import ewe.ui.CellConstants;
import ewe.ui.ControlEvent;
import ewe.ui.Form;

public abstract class PDAList extends Form {
    protected static final String LINE = "Line";

    protected static final String NEXT_PAGE = "NextPage";

    protected static final String PREV_PAGE = "PrevPage";

    protected static final String MENUE = "Menue";

    private static final String NONE = "none";

    public DefaultListModel model;
    private int linesOnScreen = 7;
    PDAListButton[] listButtons;
    protected int firstLine;

    public PDAList() {
	listButtons = new PDAListButton[linesOnScreen];
	//Show Full Screen
	setPreferredSize(Preferences.itself().getScreenWidth(), Preferences.itself().getScreenHeight());
	addListener(this);
	setTitle("Liste");

	firstLine = 0;
	for (int i = 0; i < linesOnScreen; i++) {
	    listButtons[i] = createListButton(i);
	    addLast(listButtons[i], CellConstants.STRETCH, CellConstants.FILL);
	}
	setupTBButtons();
	PDAMenuButton b1 = new PDAMenuButton("<<<", PREV_PAGE);
	addNext(b1, CellConstants.HSTRETCH, CellConstants.HFILL);
	b1 = new PDAMenuButton(MyLocale.getMsg(6052, "MENU"), MENUE);
	b1.anchor = 0;
	addNext(b1, CellConstants.HSTRETCH, CellConstants.HFILL);
	b1 = new PDAMenuButton(">>>", NEXT_PAGE);
	b1.anchor = CellConstants.EAST;
	addLast(b1, CellConstants.HSTRETCH, CellConstants.HFILL);
    }

    protected PDAListButton createListButton(int i) {
	return new PDAListButton("", LINE + i);
    }

    public void onControlEvent(ControlEvent ev) {
	if (ev instanceof ControlEvent) {
	    switch (ev.type) {
	    case ControlEvent.PRESSED:
		if (ev.action.equals(NEXT_PAGE) && model.size() > firstLine + linesOnScreen) {
		    firstLine += linesOnScreen;
		    setupTBButtons();
		} else if (ev.action.equals(PREV_PAGE) && firstLine > 0) {
		    firstLine -= linesOnScreen;
		    if (firstLine < 0) {
			firstLine = 0;
		    }
		    setupTBButtons();
		} else if (ev.action.startsWith(LINE)) {
		    int line = ev.action.charAt(LINE.length()) - '0';
		    Object clickedItem = model.get(line + firstLine);
		    Vm.debug("List clicked: " + clickedItem);
		} else if (ev.action.equals(MENUE)) {
		    setupTBButtons();
		}
		break;
	    default:
		super.onControlEvent(ev);
	    }
	}
    }

    public void setupTBButtons() {
	for (int i = 0; i < linesOnScreen; i++) {
	    if (model != null && i + firstLine < model.size()) {
		Object modelElement = model.get(i + firstLine);
		listButtons[i].text = modelElement.toString();
		listButtons[i].action = LINE + i;
	    } else {
		listButtons[i].text = listButtons[i].fromText = listButtons[i].toText = "";
		listButtons[i].action = NONE;
	    }
	    listButtons[i].repaint();
	}
    }

}