protected virtual void OnGetChildResourcesCompleted(GetChildResourcesCompletedEventArgs args)
{
if (GetChildResourcesCompleted != null)
{
GetChildResourcesCompleted(this, args);
}
}
protected virtual void OnGetChildResourcesCompleted(GetChildResourcesCompletedEventArgs args)
{
if (GetChildResourcesCompleted != null)
GetChildResourcesCompleted(this, args);
}
void resource_GetChildResourcesCompleted(object sender, GetChildResourcesCompletedEventArgs e)
{
TreeViewItem tvi = null;
string childName = "";
object[] userState = e.UserState as object[];
IDataSourceWithResources dataSource = userState[1] as IDataSourceWithResources;
if (dataSource == null)
return;
// If the element at [0] is a tree view item, then this is a standard expand action on a parent node and
// the logic flow is as it was before: remove current contents, add from array
tvi = userState[0] as TreeViewItem;
if (tvi != null)
{
tvi.Items.Clear();
}
else
{
// If the item we are adding to is the root (TreeView) then there are no children, but we are instead using the
// progress indicator and must clear this here.
showHideProgressIndicator(true);
enableDisableUrlEntryUI(false);
// Fabricate parent node and include connection, etc. so that when this node is expanded or child nodes are
// referenced, the infrastructure will be in place to make existing logic work to obtain child information
Resource parentResource = userState[2] as Resource;
tvi = new TreeViewItem
{
HeaderTemplate = LayoutRoot != null ? LayoutRoot.Resources["ResourceNodeDataTemplate"] as DataTemplate : null,
Header = parentResource,
DataContext = parentResource,
IsExpanded = true,
IsSelected = true,
Style = LayoutRoot != null ? LayoutRoot.Resources["TreeViewItemStyle"] as Style : null,
};
Connection connection = userState[3] as Connection;
tvi.SetValue(TreeViewItemExtensions.ConnectionProperty, connection);
treeResources.Items.Add(tvi);
// If the parent item "tag" is assigned a value, store it for comparison against all child elements so that
// the proper child element can be automatically selected. This is used when the URL contains the child
// element of a map service, gp service, feature service, etc.
if (parentResource.Tag != null)
{
childName = parentResource.Tag as string;
}
}
if (e.ChildResources == null)
return;
foreach (Resource childResource in e.ChildResources)
{
TreeViewItem treeViewItem = new TreeViewItem
{
HeaderTemplate = LayoutRoot != null ? LayoutRoot.Resources["ResourceNodeDataTemplate"] as DataTemplate : null,
Header = childResource,
DataContext = childResource,
IsExpanded = false,
Style = LayoutRoot != null ? LayoutRoot.Resources["TreeViewItemStyle"] as Style : null,
};
if (childResource.ResourceType == ResourceType.Layer || childResource.ResourceType == ResourceType.EditableLayer)
{
treeViewItem.SetValue(ToolTipService.ToolTipProperty, childResource.ResourceType == ResourceType.Layer ? Strings.MapLayer : Strings.FeatureLayer);
}
if (!string.IsNullOrWhiteSpace(childResource.DisplayName))
{
string parentAutomationId = tvi.GetValue(System.Windows.Automation.AutomationProperties.AutomationIdProperty) as string;
if (parentAutomationId == null)
parentAutomationId = string.Empty;
treeViewItem.SetValue(System.Windows.Automation.AutomationProperties.AutomationIdProperty, parentAutomationId + childResource.DisplayName + childResource.ResourceType);
}
bool hasChildResource = dataSource.SupportsChildResources(childResource, filter);
if (hasChildResource)
{
treeViewItem.Items.Add(createRetrievingNode());
treeViewItem.Expanded += new RoutedEventHandler(resourceNode_Expanded);
}
// If a child Id was successfully extracted from the parent resource, this means there should be a child
// resource with the same id and we need to select this as the initial URL indicated the desire to use
// this child resource.
if (!String.IsNullOrEmpty(childName))
{
if (childResource.ResourceType == ResourceType.GPTool || childResource.ResourceType == ResourceType.DatabaseTable)
{
if (String.Compare(childName, childResource.DisplayName) == 0)
treeViewItem.IsSelected = true;
}
else if (childResource.ResourceType == ResourceType.Layer)
{
if (childResource.Tag != null)
{
int nodeId = (int)childResource.Tag;
string nodeName = String.Format("{0}", nodeId);
if (String.Compare(childName, nodeName) == 0)
treeViewItem.IsSelected = true;
}
}
}
tvi.Items.Add(treeViewItem);
}
if (tvi.Items.Count == 0)
{
TreeViewItem treeViewItem = CreateTreeNodeWhenNoItems();
tvi.Items.Add(treeViewItem);
}
OnGetChildResourcesCompleted(e);
}
