gistfile1.js

ADC.Tool.ZoomTo = function() {
    var doc = document,
        defaultValue = "i.e. City, State, ZIP code",
        geocoder, input, map = ADC.Map.getMap(),
        pointFeature, urlBase = "http://rs1.adc4gis.com/img/icons/other/";
    var vector = new OpenLayers.Layer.Vector("Zoom To");
    map.addLayer(vector);
    map.setLayerIndex(vector, 0);

    function plotLocation(coords, zoom, location) {
        if (pointFeature) {
            vector.removeFeatures(pointFeature)
        }
        var lonlat = new OpenLayers.LonLat(coords[0], coords[1]);
        lonlat = ADC.MapTools.projToOpenLayers(lonlat);
        var point = new OpenLayers.Geometry.Point(lonlat.lon, lonlat.lat);
        pointFeature = new OpenLayers.Feature.Vector(point, null, {
            externalGraphic: urlBase + (ADC.Util.IE6 ? "marker_ie6.gif" : "marker.png"),
            graphicXOffset: -8,
            graphicYOffset: -16,
            pointRadius: 16
        });
        if (input && location) input.value = location;
        vector.addFeatures(pointFeature);
        map.setCenter(lonlat, zoom + 7)
    }
    var pub = {
        createToolbarUI: function(div) {
            input = doc.createElement("input");
            input.className = "adc-toolbar-zoomto-input";
            input.value = defaultValue;
            input.onfocus = function() {
                if (input.value === defaultValue) {
                    input.value = ""
                }
            };
            input.onblur = function(e) {
                if (input.value.replace(/ /g, "") === "") {
                    input.value = defaultValue
                }
            };
            input.onkeydown = function(e) {
                e = ADC.Event(e);
                if (e.keyCode === 13 && input.value !== defaultValue) {
                    e.preventDefault();
                    pub.zoomToLocation(input.value);
                    if (ADC.Util.IE8) {
                        button.focus();
                        setTimeout(function() {
                            input.focus()
                        }, 20)
                    }
                }
            };
            div.appendChild(input);
            var button = doc.createElement("button");
            button.className = "adc-toolbar-zoomto-button";
            button.setAttribute("type", "button");
            button.innerHTML = "Go";
            button.onclick = function() {
                if (input.value !== defaultValue) {
                    pub.zoomToLocation(input.value)
                }
            };
            div.appendChild(button)
        },
        zoomToLocation: function(location) {
            if (!geocoder) geocoder = new google.maps.Geocoder;
            geocoder.geocode({
                address: location,
                region: "US"
            }, function(results, status) {
                if (status == google.maps.GeocoderStatus.OK) {
                    var coords = [results[0].geometry.location.lng(), results[0].geometry.location.lat()];
                    var accuracy = 4;
                    switch (results[0].geometry.location_type) {
                        case "APPROXIMATE":
                            accuracy = 5;
                            break;
                        case "GEOMETRIC_CENTER":
                            accuracy = 6;
                            break;
                        case "RANGE_INTERPOLATED":
                            accuracy = 7;
                            break;
                        case "ROOFTOP":
                            accuracy = 8;
                            break
                    }
                    plotLocation(coords, accuracy, location)
                } else {
                    alert("You have entered an unknown address, please double check and try again.")
                }
            })
        },
        checkLocation: function(location, callback) {
            if (!geocoder) geocoder = new google.maps.Geocoder;
            geocoder.geocode({
                address: location,
                region: "US"
            }, function(results, status) {
                if (status == google.maps.GeocoderStatus.OK) {
                    var coords = [results[0].geometry.location.lng(), results[0].geometry.location.lat()];
                    callback(coords)
                } else {
                    callback()
                }
            })
        },
        resetUI: function() {
            if (input) input.value = defaultValue;
            if (pointFeature) {
                vector.removeFeatures(pointFeature)
            }
        }
    };
    return pub
}();