/** Draws the map for the "view this cap" feature

 */

function draw_cap_map(zoom) {

    var zcontrol;

    if (typeof zoom_control != 'undefined') {

        switch (zoom_control) {

        case 'full':

            zcontrol = new OpenLayers.Control.PanZoomBar();

            break;

        case 'light':

        default:

            zcontrol = new OpenLayers.Control.Zoom();

        }

    } else zcontrol = new OpenLayers.Control.Zoom();

    var map = new OpenLayers.Map({

        div: "map",

        zoom: typeof zoom == 'undefined' ? 10:zoom,

        controls:[zcontrol,

                  new OpenLayers.Control.KeyboardDefaults(),

                  new OpenLayers.Control.Navigation()],

    });

    if (typeof scale_line != 'undefined' && scale_line == true) {

        map.addControl(new OpenLayers.Control.ScaleLine({bottomOutUnits: ''}));

    }

    if (typeof base_layers != 'undefined') {

        var layers = new OpenLayers.Control.LayerSwitcher();

        map.addControl(layers);

        for (var i = 0; i < base_layers.length; i++) {

            map.addLayer(base_layers[i]);

        }

        // gestion du 45° google //

        function update_tilt() {

            for (var i = 0; i < base_layers.length; i++) {

                if (base_layers[i].type == google.maps.MapTypeId.SATELLITE) {

                    base_layers[i].mapObject.setTilt(this.checked?1:0);

                    //alert((chkbx.checked?1:0)+'//'+i);

                    base_layers[i].removeMap;

                    base_layers[i].redraw;

                }

            }

        }

        document.getElementById("tilt").onchange = update_tilt;

        // fin de gestion du 45° google //

        // autres tests

        function show_pos(e) {

            alert(formatLonlats(map.getLonLatFromViewPortPx(e.xy)));

        }

        function set_pos(e) {

            if(this.checked) {

                document.getElementById("position").style.display = 'none';

                map.events.register("click", map, show_pos);

            } else {

                document.getElementById("position").style.display = 'block';

                map.events.unregister("click", map, show_pos);

            }

        }

        var panel = new OpenLayers.Control.Panel({

            div: document.getElementById("panel")

        });

        function formatLonlats(lonLat) {

            lonLat.transform(map.getProjectionObject(), new OpenLayers.Projection("EPSG:4326"));

            var lat = lonLat.lat;

            var lon = lonLat.lon;

            var dist = OpenLayers.Util.distVincenty(lonLat, new OpenLayers.LonLat(ln.lon1, ln.lat1))*1000;

            return lat.toFixed(5) + ', ' + lon.toFixed(5) + ' à ' + parseInt(dist) + ' mètres';

        }

        map.addControl (new OpenLayers.Control.MousePosition({

            div: document.getElementById("position"),

            formatOutput: formatLonlats

        }));

        var history = new OpenLayers.Control.NavigationHistory();

        map.addControl(history);

        panel.addControls([history.next, history.previous]);

        map.addControl(panel);

        document.getElementById("clic_pos").onchange = set_pos;

        layers.layersDiv.appendChild(document.getElementById("extra"));

        // fin des autres tests

    } else {

        map.addLayer(new OpenLayers.Layer.OSM());

    }

    if (typeof contour != 'undefined') contours = [contour];

    if (typeof contours == 'undefined') contours = new Array;

    for (var i = 0; i < contours.length; i++) {

        var ct = contours[i];

        var cntr = new OpenLayers.Layer.Vector("contour_"+i, {

            strategies: [new OpenLayers.Strategy.Fixed()],

            projection: new OpenLayers.Projection("EPSG:4326"),

            styleMap: new OpenLayers.StyleMap({

                strokeWidth:     ct.strokeWidth,

                strokeColor:     ct.strokeColor,

                strokeOpacity:   ct.strokeOpacity,

                fillOpacity:     ct.fillOpacity,

                fillColor:       ct.fillColor

            }),

            protocol: new OpenLayers.Protocol.HTTP({

                url: ct.url,

                format: new OpenLayers.Format.OSM(),

            }),

            eventListeners: {

                "featuresadded": function () {

                    if (typeof fit_contours == 'undefined' || fit_contours) this.map.zoomToExtent(this.getDataExtent());

                }

            }

        });

        map.addLayer(cntr);

    }

    if (typeof ref_line != 'undefined') ref_lines = [ref_line];

    if (typeof ref_lines != 'undefined') {

        if (typeof def_line_style == 'undefined') def_line_style = {};

        var def_ln = {

            width:       def_line_style.width? def_line_style.width:2,

            color:       def_line_style.color? def_line_style.color:'#00F',

            length:      def_line_style.length? def_line_style.length:20000,

            opacity:     def_line_style.opacity? def_line_style.opacity:1}

        var lineLayer = new OpenLayers.Layer.Vector("ref_lines");

        map.addControl(new OpenLayers.Control.DrawFeature(lineLayer, OpenLayers.Handler.Path));

        for (var i = 0; i < ref_lines.length; i++) {

            var ln = ref_lines[i];

            if(isNaN(ln.cap)) {

                var pt = {lon: ln.lon2, lat: ln.lat2};

            } else {

                var LonLat = new OpenLayers.LonLat(ln.lon1, ln.lat1);

                var dist = ln.length? ln.length:def_ln.length;

                var pt = OpenLayers.Util.destinationVincenty(LonLat, ln.cap, dist);

            }

            var points = new Array(

                new OpenLayers.Geometry.Point(ln.lon1, ln.lat1),

                new OpenLayers.Geometry.Point(pt.lon, pt.lat)

            );

            points[0].transform("EPSG:4326", map.getProjectionObject());

            points[1].transform("EPSG:4326", map.getProjectionObject());

            var line = new OpenLayers.Geometry.LineString(points);

            var style = {

                strokeColor:   ln.color? ln.color:def_ln.color,

                strokeWidth:   ln.width? ln.width:def_ln.width,

                strokeOpacity: ln.width? ln.opacity:def_ln.opacity

            };

            var lineFeature = new OpenLayers.Feature.Vector(line, null, style);

            lineLayer.addFeatures([lineFeature]);

        }

        map.addLayer(lineLayer);

    }

    if (typeof ref_point != 'undefined') ref_points = [ref_point];

    if (typeof ref_points != 'undefined') {

        refpts_layer = new OpenLayers.Layer.Vector("ref_points", {projection: "EPSG:4326"});

        var selectMarkerControl = new OpenLayers.Control.SelectFeature(refpts_layer, {

            onSelect: function(feature) {

                var le_popup = new OpenLayers.Popup.FramedCloud("Popup",

                                                                feature.attributes.lonlat,

                                                                null,

                                                                feature.attributes.description,

                                                                null,

                                                                true);

                                                                //function() {selectMarkerControl.unselect(feature)});

                feature.popup = le_popup;

                map.addPopup(le_popup);

            },

            onUnselect: function(feature) {

                //alert(feature.id);

                map.removePopup(feature.popup);

                feature.popup.destroy();

                feature.popup = null;

            },

            multiple: true,

            toggle: true,

        });

        map.addControl(selectMarkerControl);

        selectMarkerControl.activate();

        map.addLayer(refpts_layer);

        if (typeof def_points_style == 'undefined') def_points_style = {};

        var def_pt = {

            icon_url:    def_points_style.icon_url,

            icon_width:  def_points_style.icon_width,

            icon_height: def_points_style.icon_height,

            showPopup:   def_points_style.showPopup   ? def_points_style.showPopup:false,

            icon_shiftX: def_points_style.icon_shiftX ? def_points_style.icon_shiftX:0,

            icon_shiftY: def_points_style.icon_shiftY ? def_points_style.icon_shiftY:0,

            opacity:     def_points_style.opacity ? def_points_style.opacity:1}

        for (var i = 0; i < ref_points.length; i++) {

            var pt = ref_points[i];

            var ptGeo = new OpenLayers.Geometry.Point(pt.lon, pt.lat);

            ptGeo.transform("EPSG:4326", map.getProjectionObject());

            var LonLat = new OpenLayers.LonLat(pt.lon, pt.lat).transform("EPSG:4326", map.getProjectionObject());

            map.setCenter(LonLat);

            var laFeature = new OpenLayers.Feature.Vector(ptGeo,

                                                          {description:pt.descr, lonlat: LonLat},

                                                          {externalGraphic: pt.icon_url?    pt.icon_url:def_pt.icon_url,

                                                           graphicWidth:    pt.icon_width?  pt.icon_width:def_pt.icon_width,

                                                           graphicHeight:   pt.icon_height? pt.icon_height:def_pt.icon_height,

                                                           graphicXOffset:  pt.icon_shiftX? pt.icon_shiftX:def_pt.icon_shiftX,

                                                           graphicYOffset:  pt.icon_shiftY? pt.icon_shiftY:def_pt.icon_shiftY,

                                                           graphicOpacity:  pt.opacity?     pt.opacity:def_pt.opacity,

                                                           title:           pt.title?       pt.title :''});

            if (i == 0) elFeature = laFeature;

            refpts_layer.addFeatures(laFeature);

            if (pt.showPopup) selectMarkerControl.select(laFeature);

        }

        if (typeof zoom == 'undefined') map.zoomToExtent(refpts_layer.getDataExtent());

    }

    if (typeof get_lon_lat != 'undefined' && get_lon_lat) {

        map.events.register("click", map, function(e) {

            var position = map.getLonLatFromViewPortPx(e.xy);

            position.transform(map.getProjectionObject(), new OpenLayers.Projection("EPSG:4326"));

            alert(position.lat.toFixed(5) + ', ' + position.lon.toFixed(5));

        });

    }

        return map;

}

function list2css_color(vals) {

        return "rgb("+vals+")";

}

function mk_all_refpoints_layer() {

        // Put the same style as panorama view for points

        var points_style = new OpenLayers.StyleMap({

                pointRadius: 10,

                fillOpacity: 0.5,

        });

        var lookup = {};

        for (var k in  point_colors ) {

                var css_color = list2css_color(point_colors[k]);

                lookup[k] = {

                        fillColor: css_color,

                        strokeColor: css_color

                };

        }

        console.log(lookup);

        points_style.addUniqueValueRules("default", "type", lookup);        

        var layer = new OpenLayers.Layer.Vector(

                "Reference points",{

                        projection: new OpenLayers.Projection("EPSG:4326"),

                        strategies: [new OpenLayers.Strategy.Fixed()],

                        protocol: new OpenLayers.Protocol.HTTP({

                                url: 'ajax/all_points.php',

                                format: new OpenLayers.Format.GeoJSON(),

                        }),

                        styleMap: points_style

                });

        return layer;

}

function mk_point_cloud(feature) {

        /* Takes a ref_point or loc_point and makes a dom element to be used as map

         * popup

         */

        var div = document.createElement('div');

        var ul = document.createElement('ul');

        var title = feature.attributes.name;

        var desc, link;

        if (feature.attributes.type == 'pano_point') {

                desc = 'photo panoramique';

                link = feature.attributes.view_url;

        } else {

                desc = 'point de référence';

        }

        div.innerHTML = '<p><strong>'+title+'</strong></p>';

        ul.innerHTML = '<li>'+desc+'</li>';

        if (link) {

                ul.innerHTML += '<li><a href="'+

                        link+'" >Visualiser';

        }

        div.appendChild(ul);

        return div.innerHTML;

}

function add_refpoint_control(layer, map) {

        var selectControl ;

        selectControl = new OpenLayers.Control.SelectFeature(

                layer,{

                        onSelect:function(feature) {

                                var popup = new OpenLayers.Popup.FramedCloud(

                                        feature.attributes.name,

                                        feature.geometry.getBounds().getCenterLonLat(),

                                        null,

                                        mk_point_cloud(feature),

                                        null, true, function() {selectControl.unselect(feature);});

                                feature.popup = popup;

                                map.addPopup(popup);},

                        onUnselect:function(feature) {

                                map.removePopup(feature.popup);

                                feature.popup.destroy();

                                feature.popup = null;

                        }});

        map.addControl(selectControl);

        selectControl.activate();

}