/// <summary>
/// Which nodes are allowed in XML at this point?
/// </summary>
public string[] AtThisPosAllowedTags(XmlCursorPos cursorPosToCheck, bool allowPcDATA, bool allowComments)
{
// To avoid accidentally returning some changes, first clone the CursorPos
var cursorPos = cursorPosToCheck.Clone();
#if ThinkLogging
_thinkLog = new StringBuilder();
#endif
var testPattern = this.GetAllTestPattern(cursorPos);
// Write elements of valid test patterns into the result
var result = new List <string>();
foreach (var muster in testPattern)
{
if (muster.Success)
{
if (muster.ElementName == null)
{
result.Add(""); // the existing element may be deleted
}
else
{
switch (muster.ElementName.ToLower())
{
case "#pcdata":
if (allowPcDATA)
{
result.Add(muster.ElementName); // This element may be inserted
}
break;
case "#comment":
if (allowComments)
{
result.Add(muster.ElementName); // This element may be inserted
}
break;
default:
result.Add(muster.ElementName); // This element may be inserted
break;
}
}
}
#if ThinkLogging
_thinkLog.Append(muster.Summary + "\r\n");
#endif
}
return(result.ToArray());
}
/// <summary>
/// Replaces the root node of the editor with the content of the clipboard
/// </summary>
private async Task <bool> ActionReplaceRootNodeByClipboardContent(SetUndoSnapshotOptions setUnDoSnapshot)
{
if (!ActionsAllowed)
{
return(false);
}
try
{
var text = await this.nativePlatform.Clipboard.GetText();
using (var reader = new XmlTextReader(text, XmlNodeType.Element, null))
{
reader.MoveToContent(); // Move to the cd element node.
// Create a new root node from the clipboard, from which we can then steal the children
var pasteNode = this.editorState.RootNode.OwnerDocument.ReadNode(reader);
if (pasteNode.Name != this.editorState.RootNode.Name)
{
// The node in the clipboard and the current root node do not have the same name
return(false); // not allowed
}
if (setUnDoSnapshot == SetUndoSnapshotOptions.Yes)
{
this.editorState.UndoHandler.SetSnapshot("replace root node by clipboard content", this.editorState.CursorRaw);
}
// Delete all children + attributes of the previous root node
this.editorState.RootNode.RemoveAll();
// Copy all attributes of the clipboard root node to the correct root node
while (pasteNode.Attributes.Count > 0)
{
var attrib = pasteNode.Attributes.Remove(pasteNode.Attributes[0]); // Remove from clipboard root node
this.editorState.RootNode.Attributes.Append(attrib); // put to the right root node
}
var startPos = new XmlCursorPos();
startPos.SetPos(this.editorState.RootNode, XmlCursorPositions.CursorInsideTheEmptyNode);
XmlCursorPos endPos;
// Now insert all children of the virtual root node one after the other at the CursorPos
endPos = startPos.Clone(); // Before inserting start- and endPos are equal
while (pasteNode.ChildNodes.Count > 0)
{
var child = pasteNode.RemoveChild(pasteNode.FirstChild);
this.editorState.RootNode.AppendChild(child);
}
await this.editorState.CursorRaw.SetPositions(this.editorState.RootNode, XmlCursorPositions.CursorOnNodeStartTag, 0, throwChangedEventWhenValuesChanged : false);
await this.editorState.FireContentChangedEvent(needToSetFocusOnEditorWhenLost : false, forceFullRepaint : false);
return(true);
}
}
catch (Exception e)
{
this.nativePlatform.LogError($"ActionReplaceRootNodeByClipboardContent: error for insert text 'text': {e.Message}");
return(false);
}
}
