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public GetService ( |
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| serviceType | ||
| return | object | |
/// <summary>
/// Gets the designer surface init parameters
/// For now they're used for preserving selected items between reloads
/// </summary>
void GetDesignerInitParams(StringBuilder strBuilder)
{
List <string> clientIds = new List <string> (host.Container.Components.Count);
foreach (IComponent comp in host.Container.Components)
{
clientIds.Add((comp as Control).ClientID);
}
var selServ = host.GetService(typeof(ISelectionService)) as ISelectionService;
if (selServ == null)
{
throw new Exception("Could not load selection service");
}
ICollection col = selServ.GetSelectedComponents();
List <string> selectedIds = new List <string> (col.Count);
foreach (IComponent comp in col)
{
selectedIds.Add((comp as Control).ClientID);
}
System.Web.Script.Serialization.JavaScriptSerializer jsonizer = new System.Web.Script.Serialization.JavaScriptSerializer();
strBuilder.AppendFormat("<div id=\"{0}\" style=\"display:none;\"> ", DesignerNames.ElementInitContClass);
strBuilder.AppendFormat("<span id=\"{0}\">", DesignerNames.ElementSelectableContClass);
jsonizer.Serialize(clientIds.ToArray(), strBuilder);
strBuilder.Append("</span>");
strBuilder.AppendFormat("<span id=\"{0}\">", DesignerNames.ElementSeletectedContClass);
jsonizer.Serialize(selectedIds.ToArray(), strBuilder);
strBuilder.Append("</span>");
strBuilder.Append("</div>");
}
//TODO: Some way to reset this when host is reset
public WebFormReferenceManager(DesignerHost host)
{
if (host == null)
{
throw new ArgumentNullException("host");
}
this.host = host;
this.typeRes = host.GetService(typeof(ITypeResolutionService)) as ITypeResolutionService;
if (typeRes == null)
{
throw new Exception("Could not obtain ITypesResolutionService from host");
}
}
public void Add(IComponent component, string name)
{
IDesigner designer = null;
//input checks
if (component == null)
{
throw new ArgumentException("Cannot add null component to container", "component");
}
if (!(component is Control))
{
throw new ArgumentException("This Container only accepts System.Web.UI.Control-derived components", "component");
}
if (component.Site != null && component.Site.Container != this)
{
component.Site.Container.Remove(component);
}
//Check the name and create one if necessary
INameCreationService nameService = host.GetService(typeof(INameCreationService)) as INameCreationService;
if (nameService == null)
{
throw new Exception("The container must have access to a INameCreationService implementation");
}
if (name == null || !nameService.IsValidName(name))
{
name = nameService.CreateName(this, component.GetType());
System.Diagnostics.Trace.WriteLine("Generated name for component: " + name);
}
//check we don't already have component with same name
if (GetComponent(name) != null)
{
throw new ArgumentException("There is already a component with this name in the container", "name");
}
//we're definately adding it now, so broadcast
OnComponentAdding(component);
//get a site and set ID property
//this way (not PropertyDescriptor.SetValue) won't fire change events
((Control)component).ID = name;
component.Site = new DesignSite(component, this);
//Get designer. If first component, designer must be an IRootDesigner
if (components.Count == 0)
{
host.SetRootComponent(component);
designer = new RootDesigner(component);
}
//FIXME: Give Mono some base designers to find! We should never encounter this!
//else
// designer = TypeDescriptor.CreateDesigner (component, typeof(System.ComponentModel.Design.IDesigner));
if (designer == null)
{
//component.Site = null;
//throw new Exception ("Designer could not be obtained for this component.");
}
else
{
//track and initialise it
designers.Add(component, designer);
designer.Initialize(component);
}
//add references to referenceManager, unless root component
if (components.Count != 1)
{
host.WebFormReferenceManager.AddReference(component.GetType());
}
//Finally put in container
components.Add(component);
//and broadcast completion
OnComponentAdded(component);
}
/// <summary>
/// Checks the document for control tags, creates components and adds the to the IContainer.
/// Adds an id attributes to tags that are server controls but doesn't have an id attribute.
/// </summary>
void ParseControls()
{
// no need to serialize the document, if we add just an id attribute to a control
suppressSerialization = true;
// if an id tag was added the document changes
// so we parse the document each time it does
do
{
// get a fresh new AspNetParsedDocument
var doc = Parse();
// go through all the nodes of the document
foreach (XNode node in doc.XDocument.RootElement.AllDescendentElements)
{
// if a node is not a XElement, no need to check if it's a control
if (!(node is XElement))
{
continue;
}
var element = node as XElement;
// the controls have a tag prefix or runat="server" attribute
if (element.Name.HasPrefix || XDocumentHelper.IsRunAtServer(element))
{
string id = XDocumentHelper.GetAttributeValueCI(element.Attributes, "id");
// check the DesignContainer if a component for that node already exists
if (host.GetComponent(id) == null)
{
// create a component of type depending of the element
IComponent comp = ProcessControl(element);
if (comp == null)
{
continue;
}
// add id to the component, for later recognition if it has no ID attribute
if (String.IsNullOrEmpty(id))
{
var nameServ = host.GetService(typeof(INameCreationService)) as INameCreationService;
if (nameServ == null)
{
throw new Exception("Could not obtain INameCreationService from the DesignerHost.");
}
// insert the attribute to the element
host.AspNetSerializer.SetAttribtue(element, "id", nameServ.CreateName(host.Container, comp.GetType()));
updateEditorContent.WaitOne(); // wait until the changes have been applied to the document
break;
}
// we have a control component, add it to the container
this.host.Container.Add(comp, id);
// and parse its attributes for component properties
ProcessControlProperties(element, comp);
}
}
}
} while (txtDocDirty);
suppressSerialization = false;
}
