/// <summary>
/// Refresh the layer list by submitting a GetCapabilities request.
/// </summary>
public void LoadLayers()
{
while (true)
{
try
{
this.Cursor = Cursors.WaitCursor;
ViewModel.XmlDocument = Capability.GetCapabilities(ViewModel.ServerUrl.Trim());
break;
}
catch (WebException wex)
{
if (wex.Status == WebExceptionStatus.ProtocolError)
{
// Get HttpWebResponse to check the HTTP status code.
HttpWebResponse httpResponse = (HttpWebResponse)wex.Response;
if (httpResponse.StatusCode == HttpStatusCode.Unauthorized ||
httpResponse.StatusCode == HttpStatusCode.ProxyAuthenticationRequired)
{
CredentialsForm form = new CredentialsForm("Authentication required for " + ViewModel.ServerUrl,
ViewModel.XmlProxyUrlResolver);
if (form.ShowDialog(this) == DialogResult.OK)
{
continue;
}
return;
}
}
MessageBox.Show("Unable to load WMS capabilities of the layer, " + wex.Message,
"MapManager", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
catch (Exception ex)
{
MessageBox.Show("Unable to load WMS capabilities of the layer, " + ex.Message,
"MapManager", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
finally
{
this.Cursor = Cursors.Default;
}
}
// load supported image types
var formatNodes = ViewModel.Formats;
comboBoxImageFormat.Items.Clear();
foreach (XmlNode node in formatNodes)
{
int index = comboBoxImageFormat.Items.Add(node.InnerText.Trim());
if (comboBoxImageFormat.Items[index].ToString() == map.outputformat.mimetype ||
(comboBoxImageFormat.SelectedIndex < 0 &&
map.outputformat.mimetype.StartsWith(comboBoxImageFormat.Items[index].ToString())) ||
comboBoxImageFormat.Items[index].ToString().ToLower().StartsWith("image/png"))
{
comboBoxImageFormat.SelectedIndex = index;
}
}
bs = new BindingSource();
bs.DataSource = ViewModel.Projections;
comboBoxProj.DataSource = bs;
UpdateProjBinding();
if (ViewModel.SelectedProjection != null)
{
comboBoxProj.SelectedValue = ViewModel.SelectedProjection;
}
if (comboBoxImageFormat.SelectedIndex < 0 && comboBoxImageFormat.Items.Count > 0)
{
comboBoxImageFormat.SelectedIndex = 0;
}
// ensure default imageindices are invalid
if (treeViewLayers.ImageList != null)
{
treeViewLayers.ImageIndex = treeViewLayers.ImageList.Images.Count;
treeViewLayers.SelectedImageIndex = treeViewLayers.ImageList.Images.Count;
}
// set up the treeView
treeViewLayers.BeginUpdate();
treeViewLayers.Nodes.Clear();
listViewLayers.Items.Clear();
var layerNodes = Capability.GetLayerNodes(ViewModel.XmlDocument);
foreach (XmlNode node in layerNodes)
{
AddLayerNode(treeViewLayers.Nodes, node);
}
treeViewLayers.EndUpdate();
treeViewLayers.ExpandAll();
if (treeViewLayers.Nodes.Count > 0)
{
treeViewLayers.Nodes[0].EnsureVisible();
}
}