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wfs-snap-split.html
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wfs-snap-split.html
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<script src="../lib/OpenLayers.js"></script>
<!--[if lte IE 6]>
<style>
.customEditingToolbar {
width: 200px;
}
</style>
<![endif]-->
<style>
.customEditingToolbar {
float: right;
right: 0px;
height: 30px;
}
.customEditingToolbar div {
float: right;
margin: 5px;
width: 24px;
height: 24px;
}
.olControlNavigationItemActive {
background-image: url("../theme/default/img/editing_tool_bar.png");
background-repeat: no-repeat;
background-position: -103px -23px;
}
.olControlNavigationItemInactive {
background-image: url("../theme/default/img/editing_tool_bar.png");
background-repeat: no-repeat;
background-position: -103px -0px;
}
.olControlDrawFeaturePointItemInactive {
background-image: url("../theme/default/img/editing_tool_bar.png");
background-repeat: no-repeat;
background-position: -77px 0px;
}
.olControlDrawFeaturePointItemActive {
background-image: url("../theme/default/img/editing_tool_bar.png");
background-repeat: no-repeat;
background-position: -77px -23px ;
}
.olControlModifyFeatureItemActive {
background-image: url(../theme/default/img/move_feature_on.png);
background-repeat: no-repeat;
background-position: 0px 1px;
}
.olControlModifyFeatureItemInactive {
background-image: url(../theme/default/img/move_feature_off.png);
background-repeat: no-repeat;
background-position: 0px 1px;
}
.olControlDeleteFeatureItemActive {
background-image: url(../theme/default/img/remove_point_on.png);
background-repeat: no-repeat;
background-position: 0px 1px;
}
.olControlDeleteFeatureItemInactive {
background-image: url(../theme/default/img/remove_point_off.png);
background-repeat: no-repeat;
background-position: 0px 1px;
}
</style>
<script type="text/javascript">
var map, wfs;
var DeleteFeature = OpenLayers.Class(OpenLayers.Control, {
initialize: function(layer, options) {
OpenLayers.Control.prototype.initialize.apply(this, [options]);
this.layer = layer;
this.handler = new OpenLayers.Handler.Feature(
this, layer, {click: this.clickFeature}
);
},
clickFeature: function(feature) {
// if feature doesn't have a fid, destroy it
if(feature.fid == undefined) {
this.layer.destroyFeatures([feature]);
} else {
feature.state = OpenLayers.State.DELETE;
this.layer.events.triggerEvent("afterfeaturemodified",
{feature: feature});
feature.renderIntent = "select";
this.layer.drawFeature(feature);
}
},
setMap: function(map) {
this.handler.setMap(map);
OpenLayers.Control.prototype.setMap.apply(this, arguments);
},
CLASS_NAME: "OpenLayers.Control.DeleteFeature"
});
function init() {
OpenLayers.ProxyHost = "proxy.cgi?url=";
map = new OpenLayers.Map({
div: "map",
maxResolution: 156543.0339,
maxExtent: new OpenLayers.Bounds(-20037508, -20037508, 20037508, 20037508),
restrictedExtent: new OpenLayers.Bounds(
-11563906, 5540550, -11559015, 5542996
),
projection: new OpenLayers.Projection("EPSG:900913"),
units: "m",
controls: [
new OpenLayers.Control.PanZoom(),
new OpenLayers.Control.Navigation()
]
});
var osm = new OpenLayers.Layer.OSM();
var styles = new OpenLayers.StyleMap({
"default": new OpenLayers.Style(null, {
rules: [
new OpenLayers.Rule({
symbolizer: {
"Point": {
pointRadius: 5,
graphicName: "square",
fillColor: "white",
fillOpacity: 0.25,
strokeWidth: 1,
strokeOpacity: 1,
strokeColor: "#333333"
},
"Line": {
strokeWidth: 3,
strokeOpacity: 1,
strokeColor: "#666666"
}
}
})
]
}),
"select": new OpenLayers.Style({
strokeColor: "#00ccff",
strokeWidth: 4
}),
"temporary": new OpenLayers.Style(null, {
rules: [
new OpenLayers.Rule({
symbolizer: {
"Point": {
pointRadius: 5,
graphicName: "square",
fillColor: "white",
fillOpacity: 0.25,
strokeWidth: 1,
strokeOpacity: 1,
strokeColor: "#333333"
},
"Line": {
strokeWidth: 3,
strokeOpacity: 1,
strokeColor: "#00ccff"
}
}
})
]
})
});
var saveStrategy = new OpenLayers.Strategy.Save();
wfs = new OpenLayers.Layer.Vector("Editable Features", {
strategies: [new OpenLayers.Strategy.BBOX(), saveStrategy],
projection: new OpenLayers.Projection("EPSG:4326"),
styleMap: styles,
protocol: new OpenLayers.Protocol.WFS({
version: "1.1.0",
srsName: "EPSG:4326",
url: "http://demo.opengeo.org/geoserver/wfs",
featureNS : "http://opengeo.org",
featureType: "roads",
geometryName: "the_geom",
schema: "http://demo.opengeo.org/geoserver/wfs/DescribeFeatureType?version=1.1.0&typename=og:roads"
})
});
map.addLayers([osm, wfs]);
// configure the snapping agent
var snap = new OpenLayers.Control.Snapping({layer: wfs});
map.addControl(snap);
snap.activate();
// configure split agent
var split = new OpenLayers.Control.Split({
layer: wfs,
source: wfs,
tolerance: 0.0001,
deferDelete: true,
eventListeners: {
aftersplit: function(event) {
var msg = "Split resulted in " + event.features.length + " features.";
flashFeatures(event.features);
}
}
});
map.addControl(split);
split.activate();
// add some editing tools to a panel
var panel = new OpenLayers.Control.Panel({
displayClass: 'customEditingToolbar',
allowDepress: true
});
var draw = new OpenLayers.Control.DrawFeature(
wfs, OpenLayers.Handler.Path,
{
title: "Draw Feature",
displayClass: "olControlDrawFeaturePoint",
handlerOptions: {multi: true}
}
);
modify = new OpenLayers.Control.ModifyFeature(
wfs, {displayClass: "olControlModifyFeature"}
);
var del = new DeleteFeature(wfs, {title: "Delete Feature"});
var save = new OpenLayers.Control.Button({
title: "Save Changes",
trigger: function() {
if(modify.feature) {
modify.selectControl.unselectAll();
}
saveStrategy.save();
},
displayClass: "olControlSaveFeatures"
});
panel.addControls([
save, del, modify, draw
]);
map.addControl(panel);
map.setCenter(new OpenLayers.LonLat(-11561460.5, 5541773), 15);
}
function flashFeatures(features, index) {
if(!index) {
index = 0;
}
var current = features[index];
if(current && current.layer === wfs) {
wfs.drawFeature(features[index], "select");
}
var prev = features[index-1];
if(prev && prev.layer === wfs) {
wfs.drawFeature(prev, "default");
}
++index;
if(index <= features.length) {
window.setTimeout(function() {flashFeatures(features, index)}, 100);
}
}
</script>
</head>
<body onload="init()">
<h1 id="title">Snap/Split and Persist via WFS</h1>
<div id="tags">
snapping, splitting, wfs, wfst, wfs-t, advanced
</div>
<p id="shortdesc">
Shows snapping, splitting, and use of the WFS Transactions (WFS-T).
</p>
<div id="map" class="smallmap"></div>
<div id="docs">
<p>The WFS protocol allows for creation of new features and reading,
updating, or deleting of existing features.</p>
<p>Use the tools to create, modify, and delete (in order from left
to right) features. Use the save tool (picture of a disk) to
save your changes.</p>
<p>To deactivate "drawing" or "modifying" depress the corresponding
button.</p>
</div>
</body>
</html>