public static OutlineItem LoadFromClipboard()
{
if (Clipboard.ContainsText())
{
var clipboardText = Clipboard.GetText();
try
{
var xmlElement = XElement.Parse(clipboardText);
var item = OutlineItem.CreateFromXmlElement(xmlElement);
return(item);
}
catch (Exception)
{
return(null);
}
}
return(null);
/*
* var clipboardAdapter = new OutlineItemCollectionClipboardAdapter();
* var itemCollection = clipboardAdapter.GetItemCollection();
*
* if (itemCollection != null && itemCollection.Count > 0)
* {
* return itemCollection[0];
* }
*
* return null;*/
}
public static void ReplaceWith(this OutlineItem itemToReplace, OutlineItem item)
{
var parent = itemToReplace.ParentItem;
var index = itemToReplace.IndexInParent();
parent.Items.RemoveAt(index);
parent.Items.Insert(index, item);
}
public static int IndexInParent(this OutlineItem item)
{
if (item.ParentItem != null)
{
return(item.ParentItem.Items.IndexOf(item));
}
return(-1);
}
public OutlineItem Clone()
{
//Temporary solution. Todo: Implement copy constructor.
var thisItemAsXmlElement = ToXmlElement();
var clone = OutlineItem.CreateFromXmlElement(thisItemAsXmlElement);
return(clone);
}
public static OutlineItem PreviousItem(this OutlineItem item)
{
var prevSibling = item.PreviousSibling();
if (prevSibling != null)
{
return(prevSibling);
}
return(item.ParentItem);
}
public static bool IsFirstChildOfParent(this OutlineItem item)
{
if (item.IndexInParent() == 0)
{
return(true);
}
if (item.IndexInParent() == -1)
{
throw new InvalidOperationException();
}
return(false);
}
public static bool IsLastChildOfParent(this OutlineItem item)
{
var indexInParent = item.IndexInParent();
if (indexInParent != -1)
{
if (item.ParentItem.Items.Count == indexInParent + 1)
{
return(true);
}
}
throw new InvalidOperationException();
}
public static OutlineDocument CreateFromXmlElement(XElement xmlElement)
{
if (xmlElement == null)
{
throw new ArgumentNullException(nameof(xmlElement));
}
if (xmlElement.Name != "SimpleOutlineDocument")
{
throw new DecodingException();
}
if (xmlElement.Attributes().Count() > 0)
{
throw new DecodingException();
}
if (xmlElement.Elements().SingleOrDefault(e => e.Name != "Outline") != null)
{
throw new DecodingException();
}
if (xmlElement.Elements().SingleOrDefault(e => e.Name == "Outline") == null)
{
throw new DecodingException();
}
var xmlOutlineElement = xmlElement.Element("Outline");
if (xmlOutlineElement.Attributes().Count() > 0)
{
throw new DecodingException();
}
if (xmlOutlineElement.Elements("Item").Count() != 1)
{
throw new DecodingException();
}
var thisOutlineDocument = new OutlineDocument();
var rootItemXmlElement = xmlOutlineElement.Element("Item");
var rootOutlineItem = OutlineItem.CreateFromXmlElement(rootItemXmlElement);
thisOutlineDocument.Items[0] = rootOutlineItem;
return(thisOutlineDocument);
}
public static OutlineItem PreviousSibling(this OutlineItem item)
{
var indexInParent = item.IndexInParent();
if (indexInParent == -1)
{
return(null);
}
if (!item.IsFirstChildOfParent())
{
return(item.ParentItem.Items[indexInParent - 1]);
}
return(null);
}
public static OutlineItem NextSibling(this OutlineItem item)
{
var indexInParent = item.IndexInParent();
if (indexInParent == -1)
{
return(null);
}
if (!item.IsLastChildOfParent())
{
return(item.ParentItem.Items[indexInParent + 1]);
}
return(null);
}
public static OutlineItem CreateFromXmlElement(XElement xmlElement)
{
if (xmlElement == null)
{
throw new ArgumentNullException(nameof(xmlElement));
}
if (xmlElement.Name != "Item")
{
throw new DecodingException();
}
if (xmlElement.Attributes().SingleOrDefault(attr => attr.Name == "Name") == null)
{
throw new DecodingException();
}
if (xmlElement.Attributes().SingleOrDefault(attr => attr.Name != "Name") != null)
{
throw new DecodingException();
}
if (xmlElement.Elements().SingleOrDefault(elem => elem.Name != "Item") != null)
{
throw new DecodingException();
}
var thisOutlineItemName = xmlElement.Attribute("Name").Value.ToString();
var thisOutlineItem = new OutlineItem(thisOutlineItemName);
foreach (XElement childOutlineItemXmlElement in xmlElement.Elements("Item"))
{
var childOutlineItem = OutlineItem.CreateFromXmlElement(childOutlineItemXmlElement);
thisOutlineItem.Items.Add(childOutlineItem);
}
return(thisOutlineItem);
}
public static OutlineItem NextItem(this OutlineItem item)
{
if (item.Items.Count != 0)
{
return(item.Items[0]);
}
var nextSibling = item.NextSibling();
if (nextSibling != null)
{
return(nextSibling);
}
var parentOfItem = item.ParentItem;
if (parentOfItem == null)
{
return(null);
}
return(parentOfItem.NextSibling());
}