/* Copyright (C) 2008  Étienne Loks  <etienne.loks_AT_peacefrogsDOTnet>

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 3 of the
License, or (at your option) any later version.

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, see <http://www.gnu.org/licenses/>.

See the file COPYING for details.
*/

/* area edit */

var map;

/* update form fields on zoom action */
function updateForm(){
    var bounds = map.getExtent().transform(epsg_projection,
                                           epsg_display_projection);
    document.getElementById('upper_left_lat').value = bounds.top;
    document.getElementById('upper_left_lon').value = bounds.left;
    document.getElementById('lower_right_lat').value = bounds.bottom;
    document.getElementById('lower_right_lon').value = bounds.right;
}

/* main initialisation function */
function init(){
    map = new OpenLayers.Map ('map_edit', {
        controls:[new OpenLayers.Control.Navigation(),
                    new OpenLayers.Control.PanPanel(),
                    new OpenLayers.Control.ZoomPanel(),
                    new OpenLayers.Control.Attribution()],
        maxResolution: 156543.0399,
        units: 'm',
        projection: epsg_projection,
        displayProjection: epsg_display_projection
    } );
    map.addLayers([map_layer]);
    map.events.register('zoomend', map, updateForm);
    map.events.register('moveend', map, updateForm);
    /* zoom to the appropriate extent */
    if (!zoomToCurrentExtent(map)){
        if(p_zoom)
            map.setCenter(centerLonLat, p_zoom);
        else
            map.setCenter(centerLonLat, 12);
    }
}