Le portail francophone de la géomatique

/**********************************************************************************
 * Split control
 ********************************************************************************/
function handleSplitDraw(event) {
    var splitter = event.feature;
    var features = map.layers[2].features;
    var candidates = OpenLayers.Array.filter(map.layers[2].features, function(feature) {
        var hit = false;
        if (feature.geometry.intersects(splitter.geometry)) {
            hit = true;
        }
        return hit;
});
var candidate;
    for (var i=0, ii=candidates.length; i<ii; ++i) {
        candidate = candidates[i];
        if (candidate.geometry.intersects(splitter.geometry)) {
            map.layers[2].removeFeatures([candidate]);
            executeSplit(candidate, splitter);
        }
    }
    return false;
}

// Construct and issue the WPS execute request.

 
var wktFormat = new OpenLayers.Format.WKT();
var wpsFormat = new OpenLayers.Format.WPSExecute();
function executeSplit(poly, line) {

//This data structure can be derived from the DescribeProcess request.
      
    var doc = this.wpsFormat.write({
        identifier: "gs:SplitPolygon",
        dataInputs: [{
            identifier: "polygon",
            data: {
                complexData: {
                    mimeType: "application/wkt",
                    value: wktFormat.write(poly)
                }
            }
        }, {
            identifier: "line",
            data: {
                complexData: {
                    mimeType: "application/wkt",
                    value: wktFormat.write(line)
                }
            }
        }],
        responseForm: {
            rawDataOutput: {
                mimeType: "application/wkt",
                identifier: "result"
            }
        }
    });
 // Post the request and expect success.  Failure case could be handled.
 
OpenLayers.Request.POST({
        url: "http://localhost:8080/geoserver/wps",
        data: doc,
        success: function(response) {
            handleSuccess(response, poly);
        }
    });

}

/**
 * When response comes in, parse it as WKT and replace the split features with
 * results.  If the response doesn't contain WKT (no split), add back the 
 * original feature that was removed above.
*/
function handleSuccess(response, poly) {
    var features = wktFormat.read(response.responseText);
    if (features && features.length > 0) {
        map.layers[2].addFeatures(features);
    } else {
       // map.layers[1].addFeatures([poly]);
    }
}

var drawLine = new OpenLayers.Control.DrawFeature(
        map.layers[2], OpenLayers.Handler.Path
);
mapPanel.map.addControls(drawLine]);

saveStrategy = new OpenLayers.Strategy.Save();
    wfs_layer =     new OpenLayers.Layer.Vector(
            "Editable plot Layer", 
            {
            styleMap: WFSStyle,
                eventListeners: {
                    sketchcomplete: function(event) {
                            var proceed = true;
                            if (event.feature.geometry instanceof OpenLayers.Geometry.LineString) {
                                handleSplitDraw(event);
                                proceed = false;
                            }
                            return proceed;
                        }
                    },
                    visibility: false,
                    strategies: [new OpenLayers.Strategy.BBOX(), saveStrategy],
                        projection: new OpenLayers.Projection("EPSG:4326"),
                        protocol: new OpenLayers.Protocol.WFS({
                            version: "1.1.0",
                            url: "note_url",
                            featureNS :  "FNS",
                            featureType: "fname",
                            geometryName: "the_geom",
                            extractAttributes: true,
                            schema: "myschema"
                        })
                    }
            ),