protected override void Initialization(Wms.WmsCreator wmsCreator)
{
Debug.Assert(wmsCreator != null, "XML capabilities reader must be initialized when layer parsing starts!");
if (parent != null)
{
layerCreator = parent.AddLayer();
}
else
{
layerCreator = wmsCreator.MakeLayerCreator();
}
}
public LayerCreator(Wms.WmsCreator wmsCreator, LayerCreator parent)
{
Debug.Assert(wmsCreator != null, "We need WmsCreator to create layers!");
WmsCreator = wmsCreator;
if (parent == null)
{
WmsCreator.Layer = this;
}
Parent = parent;
Name = string.Empty;
Title = string.Empty;
Description = string.Empty;
ImageFormat = ImageFormat.PNG;
}
public void Parse(XmlReader reader, Wms.WmsCreator creator)
{
Debug.Assert(creator != null, "XML parser needs WMSCreator as parameter!");
Initialization(creator);
try
{
Debug.Assert(reader != null, "XML reader must be valid!");
while (IsRunning && reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
ParseStartElement(reader);
break;
case XmlNodeType.EndElement:
ParseEndElement(reader);
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
ParseText(reader);
break;
default:
break;
}
}
if (IsRunning)
{
throw new XmlException("Unexpected end of XML file!");
}
}
finally
{
Finalization();
}
}
public LayerCreator(Wms.WmsCreator wmsCreator)
: this(wmsCreator, null)
{
// Not used
}
private string CreateNewWms(Uri uri)
{
Debug.Assert(uri != null, "We cannot create new WMS without service URI!");
// TODO: Rewrite downloading to WebRequestPool
using (var webClient = new WebClient())
{
var uriBuilder = new UriBuilder(uri);
// Parameters to get WMS capabilities
uriBuilder.Query = Wms.CAPABILITY_ADDRESS_QUERY;
byte[] data = null;
try
{
data = webClient.DownloadData(uriBuilder.Uri);
}
catch (WebException)
{
return(Properties.Resources.WmsCapabilitiesDownloadingError);
}
var contentType = webClient.ResponseHeaders.Get("Content-Type");
// Additional information is omitted.
if (contentType.StartsWith("application/vnd.ogc.wms_xml", StringComparison.OrdinalIgnoreCase) ||
contentType.StartsWith("application/xml", StringComparison.OrdinalIgnoreCase) ||
contentType.StartsWith("text/xml", StringComparison.OrdinalIgnoreCase))
{
var settings = new XmlReaderSettings();
settings.ProhibitDtd = false;
settings.IgnoreComments = true;
settings.IgnoreProcessingInstructions = true;
settings.IgnoreWhitespace = true;
settings.ValidationType = ValidationType.Schema;
using (var stream = new MemoryStream(data))
using (var reader = XmlReader.Create(stream, settings))
{
var parser = new CapabilitiesParser();
var creator = new Wms.WmsCreator();
try
{
parser.Parse(reader, creator);
}
catch (XmlException)
{
return(Properties.Resources.NotValidXmlFile);
}
catch (XmlParser.XmlParserException e)
{
return(e.Message);
}
creator.ServiceAddress = uri;
var wms = creator.Create();
var layer = wms.Layer;
layers.BeginUpdate();
try
{
layer.AddToTreeView(layers);
}
finally
{
layers.EndUpdate();
}
canvas.Invalidate(false);
}
}
else
{
return(Properties.Resources.FileNotInXmlFormat);
}
}
return(null);
}
protected override void Initialization(Wms.WmsCreator wmsCreator)
{
creator = wmsCreator;
}
protected abstract void Initialization(Wms.WmsCreator wmsCreator);
