GIS-Cloud-Examples/create.html at master · giscloud/GIS-Cloud-Examples · GitHub

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<!DOCTYPE html>
<html>

    <title>create map-table-layer-feature</title>

    <link rel="stylesheet" type="text/css" href="examples.css"/>
    <script type="text/javascript" src="https://api.giscloud.com/1/api.js"></script>
    <script type="text/javascript" src="examples.js"></script>

    <style>

        .disabled { opacity: 0.3 }

        .disabled label,
        .disabled button { display: none }

    </style>

    <script type="text/javascript">

        var $ = giscloud.exposeJQuery(),
            viewer, mapId, layerId, tableName;

        // authorization is needed to create or update objects in GIS Cloud
        giscloud.apiKey("0637f5945eeb535a3c83fb91a11b4fd7");

        giscloud.ready(function () {

            // prepare the viewer
            viewer = new giscloud.Viewer("mapViewer");

            // wire the buttons
            $("#createMapBtn").click(step1).focus();
            $("#createTableBtn").click(step2);
            $("#createLayerBtn").click(step3);
            $("#createFeatureBtn").click(step4);
            $("#againBtn").click(step5);

        });

        function step1() {
            var mapName, mapDef;

            mapName = $("#mapNameInput").val();
            if (!mapName) return;

            // this is a map definition object for a map in the popular (Web) Mercator projection
            mapDef = {
                name: "Example created: " + mapName,
                units: "meter",
                proj4: "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs"
            };

            $("#mapPart").addClass("disabled");

            // create map
            giscloud.maps.create(mapDef)
            .fail(function () {
                $("#mapPart").removeClass("disabled");
                alert("Create map failed");
            })
            .done(function (newMapId) {
                // save the newly created map id
                mapId = newMapId;
                // go to the next step
               $("#tablePart").removeClass("disabled");
               $("#tableNameInput").focus();
            });
        }

        function step2() {
            var tableDef;

            tableName = $("#tableNameInput").val();
            if (!tableName) return;

            // convert name to alphanumerics, max length 50
            tableName = "xmpl_" + tableName.toLowerCase().replace(/(^[^a-z]+)|(\W+)/g, '_').substr(0, 50);
            // add timestamp to help prevent overlaps with existing tables
            tableName += $.now();

            // create table definition
            tableDef = {
                name: tableName,
                geometry: "point", // can also be "line", "polygon" etc.
                srid: 4326, // gps coordinates (WGS84)
                columns: {
                    "text_field": { "type": "text" },
                    "number_field": { "type": "!double precision" }
                }
            }

            $("#tablePart").addClass("disabled");

            // create table
            giscloud.tables.create(tableDef)
            .fail(function () {
                $("#tablePart").removeClass("disabled");
                alert("Create table failed");
            })
            .done(function () {
                // next step
                $("#layerPart").removeClass("disabled");
                $("#layerNameInput").focus();
            });
        }

        function step3() {
            var layerName, layerDef;

            layerName = $("#layerNameInput").val();
            if (!layerName) return;

            // first add the basemap layer
            layerDef =  {
                map_id: mapId, // use the saved map id here
                name: "MapQuest OSM",
                source: { "type": "tile", "src": "mapquest-osm" },
                type: "tile",
                x_min: "-20037508.3427892", x_max: "20037508.3427892",
                y_min: "-20037508.3427892", y_max: "20037508.3427892",
                visible: true
            };

            $("#layerPart").addClass("disabled");

            // create basemap layer
            (new giscloud.Layer(layerDef)).update()
            .fail(function () {
                $("#layerPart").removeClass("disabled");
                alert("Create basemap layer failed");
            })
            .done(function () {
                // now add the feature layer
                layerDef.name = layerName;
                layerDef.type = "point";
                layerDef.styles = [{ "symbol": { "type": "circle", "color":"250,241,65", "border":"43,104,217", "bw":"2", "size":"14" } }];
                layerDef.source = {
                    "type": "pg", // postgis table is the source
                    "src": tableName
                };
                (new giscloud.Layer(layerDef)).update()
                .fail(function () {
                    $("#layerPart").removeClass("disabled");
                    alert("Create feature layer failed");
                })
                .done(function (newLayerId) {
                    // save the layer id
                    layerId = newLayerId;
                    // continue to the next step
                    $("#featurePart").removeClass("disabled");
                    $("#featureLatInput").focus();
                });
            });
        }

        function step4() {
            var featureDef, lonLat = new giscloud.LonLat(
                    $("#featureLonInput").val(),
                    $("#featureLatInput").val()
                );

            // check values
            if (!lonLat.valid()) return;

            // prepare feature definition
            featureDef = {
                geometry: new giscloud.geometry.Point(lonLat.lon, lonLat.lat).toOGC(),
                data: {
                    "text_field": $("#featureTextInput").val(),
                    "number_field": parseFloat($("#featureTextInput").val()) || null
                }
            }

            $("#featurePart").addClass("disabled");

            // create a new feature
            giscloud.features.create(layerId, featureDef)
            .fail(function () {
                alert("Create feature failed");
                $("#featurePart").removeClass("disabled");
            })
            .done(function () {
                $("#done").show();
                viewer.loadMap(mapId);
            })
        }

        function step5() {
            // return to the start
            $("#done").hide();
            $("#mapPart").removeClass("disabled");
            $("#mapNameInput").focus();
        }
    </script>

    <body>
        <h2>Creating GIS Cloud objects</h2>
        <p>
            This example shows you how to create some of the basic GIS objects.
        </p>

        <div id="mapPart">
            <h3>Map</h3>
            <p>First thing you'll need is a map. Set a name for it and press create.</p>
            <p>
                <label>Name: <input id="mapNameInput"/></label><button id="createMapBtn">Create</button>
            </p>
        </div>

        <div id="tablePart" class="disabled">
            <h3>Table</h3>
            <p>Next, a table is required to hold feature data. Name will be converted to alphanumeric lowercase.</p>
            <p>
                <label>Name: <input id="tableNameInput"/></label><button id="createTableBtn">Create</button>
            </p>
        </div>

        <div id="layerPart" class="disabled">
            <h3>Layer</h3>
            <p>A layer is defined with the table as the datasource, and the map as its parent. Set a name for it.</p>
            <p>Another layer, the OSM basemap, will be added to the map as well.</p>
            <p>
                <label>Name: <input id="layerNameInput"/></label><button id="createLayerBtn">Create</button>
            </p>
        </div>


        <div id="featurePart" class="disabled">
            <h3>Feature</h3>
            <p>
                Set a latitude and a longitude using GPS coordinates for a new point feature.
                You can also set some values for the new feature.
            </p>
            <p>
                <label>Latitude: <input id="featureLatInput" value="51.5"/>&deg;</label><br/>
                <label>Longitude: <input id="featureLonInput" value="-7.4"/>&deg;</label><br/>
                <label>Text field: <input id="featureTextInput"/></label><br/>
                <label>Number: <input typr="number" id="featureNumberInput"/></label><br/>
                <button id="createFeatureBtn">Create</button>
            </p>
        </div>

        <div id="done" style="display: none">
            <h3>Done!</h3>
            <div id="mapViewer"></div>
            <button id="againBtn">Start over</button>
        </div>
    </body>
</html>