private bool DeleteElement(SvgElement element, bool deleteFromParent)
{
if (element == null)
{
return(false);
}
var parent = element.GetParent();
if (parent == null)
{
// root node cannot be delete!
ErrorMessage = "root node cannot be delete!";
return(false);
}
// set the Next reference of the previous
if (element.GetPrevious() != null)
{
element.GetPrevious().SetNext(element.GetNext());
}
// set the Previous reference of the next
if (element.GetNext() != null)
{
element.GetNext().SetPrevious(element.GetPrevious());
}
// check if the element is the first child
// the deleteFromParent flag is used to avoid deleting
// all parent-child relationship. This is used in the Cut
// operation where the subtree can be pasted
if (deleteFromParent)
{
if (IsFirstChild(element))
{
// set the Child reference of the parent to the next
element.GetParent().SetChild(element.GetNext());
}
}
// delete its children
var child = element.GetChild();
while (child != null)
{
DeleteElement(child, false);
child = child.GetNext();
}
// delete the element from the colloection
svgDocumentElements.Remove(element.GetInternalId());
return(true);
}
/// <summary>
/// It creates a new element copying all attributes from elementToClone; the new
/// element is inserted under the parent element provided.
/// </summary>
/// <param name="parent">Parent element. If null the element is added under the root.</param>
/// <param name="elementToClone">Element to be cloned</param>
/// <returns></returns>
public SvgElement CloneElement(SvgElement parent, SvgElement elementToClone)
{
// calculate unique id
var sOldId = elementToClone.GetAttributeStringValue(SvgAttribute.SvgAttributes.AttrCoreId);
var sNewId = sOldId;
if (sOldId != "")
{
int i = 1;
// check if it is unique
while (GetSvgElement(sNewId) != null)
{
sNewId = sOldId + "_" + i.ToString();
i++;
}
}
// clone operation
var newElement = AddElement(parent, elementToClone.GetElementName());
newElement.CloneAttributeList(elementToClone);
if (sNewId != "")
{
newElement.SetAttributeValue(SvgAttribute.SvgAttributes.AttrCoreId, sNewId);
}
if (elementToClone.GetChild() != null)
{
newElement.SetChild(CloneElement(newElement, elementToClone.GetChild()));
if (elementToClone.GetChild().GetNext() != null)
{
newElement.GetChild().SetNext(CloneElement(newElement, elementToClone.GetChild().GetNext()));
}
}
return(newElement);
}
private bool DeleteElement(SvgElement element, bool deleteFromParent)
{
if ( element == null )
{
return false;
}
var parent = element.GetParent();
if ( parent == null )
{
// root node cannot be delete!
ErrorMessage = "root node cannot be delete!";
return false;
}
// set the Next reference of the previous
if ( element.GetPrevious() != null )
{
element.GetPrevious().SetNext(element.GetNext());
}
// set the Previous reference of the next
if ( element.GetNext() != null )
{
element.GetNext().SetPrevious(element.GetPrevious());
}
// check if the element is the first child
// the deleteFromParent flag is used to avoid deleting
// all parent-child relationship. This is used in the Cut
// operation where the subtree can be pasted
if ( deleteFromParent )
{
if ( IsFirstChild(element) )
{
// set the Child reference of the parent to the next
element.GetParent().SetChild(element.GetNext());
}
}
// delete its children
var child = element.GetChild();
while ( child != null )
{
DeleteElement(child, false);
child = child.GetNext();
}
// delete the element from the colloection
svgDocumentElements.Remove(element.GetInternalId());
return true;
}
/// <summary>
/// It creates a new element copying all attributes from elementToClone; the new
/// element is inserted under the parent element provided.
/// </summary>
/// <param name="parent">Parent element. If null the element is added under the root.</param>
/// <param name="elementToClone">Element to be cloned</param>
/// <returns></returns>
public SvgElement CloneElement(SvgElement parent, SvgElement elementToClone)
{
// calculate unique id
var sOldId = elementToClone.GetAttributeStringValue(SvgAttribute.SvgAttributes.AttrCoreId);
var sNewId = sOldId;
if ( sOldId != "" )
{
int i = 1;
// check if it is unique
while ( GetSvgElement(sNewId) != null )
{
sNewId = sOldId + "_" + i.ToString();
i++;
}
}
// clone operation
var newElement = AddElement(parent, elementToClone.GetElementName());
newElement.CloneAttributeList(elementToClone);
if ( sNewId != "" )
{
newElement.SetAttributeValue(SvgAttribute.SvgAttributes.AttrCoreId, sNewId);
}
if ( elementToClone.GetChild() != null )
{
newElement.SetChild(CloneElement(newElement, elementToClone.GetChild()));
if ( elementToClone.GetChild().GetNext() != null )
{
newElement.GetChild().SetNext(CloneElement(newElement, elementToClone.GetChild().GetNext()));
}
}
return newElement;
}
private void AddNodeToTree(SvgElement eleParent,
SvgElement eleToAdd,
SvgElement eleBefore)
{
if (eleToAdd == null)
{
return;
}
string sNodeName = eleToAdd.GetElementName();
string sId;
sId = eleToAdd.Id;
if (sId != "")
{
sNodeName += "_";
sNodeName += sId;
//sNodeName += ")";
}
TreeViewItem node = new TreeViewItem { Name = sNodeName };
node.Tag = eleToAdd.GetInternalId();
TreeViewItem nodeParent = null;
TreeViewItem nodeBefore = null;
if (eleParent != null)
{
nodeParent = FindNodeByTag(null, eleParent.GetInternalId().ToString());
}
if (eleBefore != null)
{
nodeBefore = FindNodeByTag(nodeParent, eleBefore.GetInternalId().ToString());
}
if (nodeParent == null)
{
if (nodeBefore == null)
{
TreeViewPrintFile.Items.Add(node);
}
else
{
//TreeViewPrintFile.Items.Insert(nodeBefore.Index, node);
}
}
else
{
if (nodeBefore == null)
{
nodeParent.Items.Add(node);
}
else
{
//nodeParent.Items.Insert(nodeBefore.Index, node);
}
}
//node.ImageIndex = (int)eleToAdd.getElementType();
//node.SelectedImageIndex = nod.ImageIndex;
//node.Expand();
if (eleToAdd.GetChild() != null)
{
AddNodeToTree(eleToAdd, eleToAdd.GetChild(), null);
SvgElement nxt = eleToAdd.GetChild().GetNext();
while (nxt != null)
{
AddNodeToTree(eleToAdd, nxt, null);
nxt = nxt.GetNext();
}
}
TreeViewPrintFile.Items.MoveCurrentTo(node);
}
