/**
 * @file
 * Location chooser interface.
 */

/*global $, Drupal, GEvent, GLatLng, GMarker */

Drupal.gmap.addHandler('gmap', function (elem) {
    var obj = this;

    var binding = obj.bind("locpickchange", function () {
        if (obj.locpick_point && obj.locpick_coord) {
            obj.locpick_point.setPosition(obj.locpick_coord);
        }
    });

    obj.bind("locpickremove", function () {
        if (obj.locpick_point) obj.locpick_point.setMap(null);
        obj.locpick_point = null;
        obj.locpick_coord = null;
        obj.change('locpickchange', -1);
    });

    obj.bind("init", function () {
        if (obj.vars.behavior.locpick) {
            obj.locpick_coord = new google.maps.LatLng(obj.vars.latitude, obj.vars.longitude);

            google.maps.event.addListener(obj.map, "click", function (event) {
                google.maps.event.trigger(obj.map, "resize");
                if (event) {
                    if (!obj.locpick_point) {
                        obj.locpick_point = new google.maps.Marker({
                            position: event.latLng,
                            map: obj.map,
                            draggable: true
                        });
                    }
                    else {
                        obj.locpick_point.setPosition(event.latLng);
                    }
                    google.maps.event.addListener(obj.locpick_point, 'drag', function () {
                        obj.locpick_coord = new google.maps.LatLng(obj.locpick_point.position.lat(), obj.locpick_point.position.lng());
                        obj.change('locpickchange', binding);
                    });
                    google.maps.event.addListener(obj.locpick_point, 'dragend', function () {
                        obj.locpick_coord = new google.maps.LatLng(obj.locpick_point.position.lat(), obj.locpick_point.position.lng());
                        obj.change('locpickchange', binding);
                    });
                    obj.locpick_coord = event.latLng;
                    obj.map.panTo(event.latLng);
                    obj.change('locpickchange', binding);
                }
                else {
                    // Unsetting the location
                    obj.change('locpickremove', -1);
                }
            });
        }
    });

    obj.bind("ready", function () {
        // Fake a click to set the initial point, if one was set.
        if (obj.vars.behavior.locpick) {
            if (!obj.locpick_invalid) {
                obj.change('locpickchange', -1);
            }
        }
    });

});

Drupal.gmap.addHandler('locpick_latitude', function (elem) {
    var obj = this;

    obj.bind("init", function () {
        if (elem.value !== '') {
            obj.vars.latitude = Number(elem.value);
            obj.locpick_coord = new google.maps.LatLng(obj.vars.latitude, obj.vars.longitude);
        }
        else {
            obj.locpick_coord = null;
            obj.locpick_invalid = true;
        }
    });

    var binding = obj.bind("locpickchange", function () {
        if (obj.locpick_coord) {
            elem.value = obj.locpick_coord.lat();
        }
        else {
            elem.value = '';
        }
    });

    $(elem).change(function () {
        if (elem.value !== '') {
            if (obj.locpick_coord) {
                obj.locpick_coord = new google.maps.LatLng(Number(elem.value), obj.locpick_coord.lng());
                obj.change('locpickchange', binding);
            }
            else {
                obj.locpick_coord = new google.maps.LatLng(Number(elem.value), 0.0);
            }
        }
        else {
            obj.change('locpickremove', -1);
        }
    });
});

Drupal.gmap.addHandler('locpick_longitude', function (elem) {
    var obj = this;

    obj.bind("init", function () {
        if (elem.value !== '') {
            obj.vars.longitude = Number(elem.value);
            obj.locpick_coord = new google.maps.LatLng(obj.vars.latitude, obj.vars.longitude);
        }
        else {
            obj.locpick_invalid = true;
        }
    });

    var binding = obj.bind("locpickchange", function () {
        if (obj.locpick_coord) {
            elem.value = obj.locpick_coord.lng();
        }
        else {
            elem.value = '';
        }
    });

    $(elem).change(function () {
        if (elem.value !== '') {
            if (obj.locpick_coord) {
                obj.locpick_coord = new google.maps.LatLng(obj.locpick_coord.lat(), Number(elem.value));
                obj.change('locpickchange', binding);
            }
            else {
                obj.locpick_coord = new google.maps.LatLng(0.0, Number(elem.value));
            }
        }
        else {
            obj.change('locpickremove', -1);
        }
    });
});