// $Id: FeatureInfo.Control.js,v 1.1.2.6 2008/07/03 07:07:28 openwereld Exp $
MappingKit.Control.FeatureInfo = OpenLayers.Class(OpenLayers.Control, {
initialize: function(options) {
options.type = OpenLayers.Control.TYPE_TOGGLE;
OpenLayers.Control.prototype.initialize.apply(this, [options]);
},
activate: function() {
//alert('activate');
if (this.map) {
this.map.events.register('click', this.map, this.request_info);
}
return OpenLayers.Control.prototype.activate.apply(this);
},
deactivate: function() {
if (this.map) {
this.map.events.unregister('click', this.map, this.request_info);
}
// clear existing feature info
$("#featureinfo").empty();
//alert('deactivate');
return OpenLayers.Control.prototype.deactivate.apply(this);
},
request_info: function(e) {
//alert('Feature info not implemented');
//OpenLayers.Util.getElement('nodeList').innerHTML = "Loading... please wait...";
// clear existing feature info
$("#featureinfo").empty();
// determine query layers
// info formats geoserver: application/vnd.ogc.gml, text/html, text/plain
// umn mapserver: MIME, GML.1
var count = 0;
MappingKit.FeatureInfo = {};
for (var i = 0; i < this.layers.length; i++) {
var layer = this.layers[i];
if (layer instanceof OpenLayers.Layer.WMS
&& layer.visibility && layer.queryable) {
var requestOptions = {
REQUEST: "GetFeatureInfo",
EXCEPTIONS: "application/vnd.ogc.se_xml",
BBOX: this.getExtent().toBBOX(),
X: e.xy.x,
Y: e.xy.y,
QUERY_LAYERS: layer.params.LAYERS,
WIDTH: this.size.w,
HEIGHT: this.size.h
};
if (layer.info_formats && layer.info_formats.length > 0) {
requestOptions.INFO_FORMAT = layer.info_formats[0];
}
else {
requestOptions.INFO_FORMAT = 'text/plain';
}
var url = layer.getFullRequestString(requestOptions);
// Openlayers call
//OpenLayers.loadURL(url, '', layer, MappingKit.show_info, MappingKit.fail_info);
// jQuery call
url = OpenLayers.ProxyHost + escape(url);
MappingKit.FeatureInfo[layer.id] = { 'requestOptions': requestOptions, 'layer': layer };
var xhr = jQuery.ajax({type: 'GET'
, 'url': url
, 'complete': MappingKit.complete
, 'data': {'featureinfo_id': layer.id}
//, 'processData': false
, 'dataType': 'html'
});
count += 1;
}
}
OpenLayers.Event.stop(e);
if (count == 0) {
alert(Drupal.t('No queryable layers'));
}
},
CLASS_NAME: 'mk.Control.FeatureInfo'
});
MappingKit.complete = function(xhr, textStatus) {
//this; // the options for this ajax request
// extract info_format from url?
var params = {};
var parts = this.url.split('?');
params.service = parts[0];
var list = parts[1].split('&');
for (var i = 0; i < list.length; i++) {
var tmp = list[i].split('=');
params[tmp[0]] = tmp[1];
}
var info = MappingKit.FeatureInfo[params.featureinfo_id];
var str = textStatus;
if (xhr.status == 200) {
var text = xhr.responseText;
// check if empty
switch (info.requestOptions.INFO_FORMAT) {
case 'text/html':
if (text.search(/\s*<\/body>/i) >= 0) {
// empty body
return;
}
break;
default:
if (text == 'GetFeatureInfo results:\n\n Search returned no results.\n') {
// no results to show
return;
}
break;
}
var output = '' + info.layer.name + '
';
switch (info.requestOptions.INFO_FORMAT) {
case 'text/html':
break;
default:
text = '' + text + '
';
}
output += text;
$("#featureinfo").append(output);
}
else {
// other status
alert(Drupal.t('Error: @text (@code)', {'@text': xhr.statusText, '@code': xhr.status}));
}
}