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developer:rhinocommonsamples:renamelayer [2015/09/14] (current)
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 +===== Sample: Rename a Layer =====
 +
 +===== C# =====
 +<code c#>
 +public class RenameLayerCommand : Command
 +{
 +  public override string EnglishName { get { return "​csRenameLayer";​ } }
 +
 +  protected override Result RunCommand(RhinoDoc doc, RunMode mode)
 +  {
 +    string layer_name = "";​
 +    var rc = RhinoGet.GetString("​Name of layer to rename",​ true, ref layer_name);​
 +    if (rc != Result.Success)
 +      return rc;
 +    if (String.IsNullOrWhiteSpace(layer_name))
 +      return Result.Nothing;​
 +   
 +    // because of sublayers it's possible that more than one layer has the same name
 +    // so simply calling doc.Layers.Find(layerName) isn't good enough. ​ If "​layerName"​ returns
 +    // more than one layer then present them to the user and let him decide.
 +    var matching_layers = (from layer in doc.Layers
 +                           where layer.Name == layer_name
 +                           ​select layer).ToList<​Layer>​();​
 +
 +    Layer layer_to_rename = null;
 +    if (matching_layers.Count == 0)
 +    {
 +      RhinoApp.WriteLine("​Layer \"​{0}\"​ does not exist.",​ layer_name);​
 +      return Result.Nothing;​
 +    }
 +    else if (matching_layers.Count == 1)
 +    {
 +      layer_to_rename = matching_layers[0];​
 +    }
 +    else if (matching_layers.Count > 1)
 +    {
 +      for (int i = 0; i < matching_layers.Count;​ i++)
 +      {
 +        RhinoApp.WriteLine("​({0}) {1}", i+1, matching_layers[i].FullPath.Replace("::",​ "​->"​));​
 +      }
 +      int selected_layer = -1;
 +      rc = RhinoGet.GetInteger("​which layer?",​ true, ref selected_layer);​
 +      if (rc != Result.Success)
 +        return rc;
 +      if (selected_layer > 0 && selected_layer <= matching_layers.Count)
 +        layer_to_rename = matching_layers[selected_layer - 1];
 +      else return Result.Nothing;​
 +    }
 +
 +    if (layer_to_rename == null)
 +      return Result.Nothing;​
 +
 +    layer_name = "";​
 +    rc = RhinoGet.GetString("​New layer name", true, ref layer_name);​
 +    if (rc != Result.Success)
 +      return rc;
 +    if (String.IsNullOrWhiteSpace(layer_name))
 +      return Result.Nothing;​
 +
 +    layer_to_rename.Name = layer_name;
 +    if (!layer_to_rename.CommitChanges())
 +      return Result.Failure;​
 +    return Result.Success;​
 +  }
 +}
 +</​code>​
 +===== VB.NET =====
 +<code vb>
 +Public Class RenameLayerCommand
 +  Inherits Command
 +  Public Overrides ReadOnly Property EnglishName() As String
 +    Get
 +      Return "​vbRenameLayer"​
 +    End Get
 +  End Property
 +
 +  Protected Overrides Function RunCommand(doc As RhinoDoc, mode As RunMode) As Result
 +    Dim layer_name As String = ""​
 +    Dim rc = RhinoGet.GetString("​Name of layer to rename",​ True, layer_name)
 +    If rc <> Result.Success Then
 +      Return rc
 +    End If
 +    If [String].IsNullOrWhiteSpace(layer_name) Then
 +      Return Result.[Nothing]
 +    End If
 +
 +    ' because of sublayers it's possible that more than one layer has the same name
 +    ' so simply calling doc.Layers.Find(layerName) isn't good enough. ​ If "​layerName"​ returns
 +    ' more than one layer then present them to the user and let him decide.
 +    Dim matching_layers = (From layer In doc.Layers Where layer.Name = layer_name Select layer).ToList()
 +
 +    Dim layer_to_rename As Layer = Nothing
 +    If matching_layers.Count = 0 Then
 +      RhinoApp.WriteLine("​Layer ""​{0}""​ does not exist.",​ layer_name)
 +      Return Result.[Nothing]
 +    ElseIf matching_layers.Count = 1 Then
 +      layer_to_rename = matching_layers(0)
 +    ElseIf matching_layers.Count > 1 Then
 +      For i As Integer = 0 To matching_layers.Count - 1
 +        RhinoApp.WriteLine("​({0}) {1}", i + 1, matching_layers(i).FullPath.Replace("::",​ "​->"​))
 +      Next
 +      Dim selected_layer As Integer = -1
 +      rc = RhinoGet.GetInteger("​which layer?",​ True, selected_layer)
 +      If rc <> Result.Success Then
 +        Return rc
 +      End If
 +      If selected_layer > 0 AndAlso selected_layer <= matching_layers.Count Then
 +        layer_to_rename = matching_layers(selected_layer - 1)
 +      Else
 +        Return Result.[Nothing]
 +      End If
 +    End If
 +
 +    If layer_to_rename Is Nothing Then
 +      Return Result.[Nothing]
 +    End If
 +
 +    layer_name = ""​
 +    rc = RhinoGet.GetString("​New layer name", True, layer_name)
 +    If rc <> Result.Success Then
 +      Return rc
 +    End If
 +    If [String].IsNullOrWhiteSpace(layer_name) Then
 +      Return Result.[Nothing]
 +    End If
 +
 +    layer_to_rename.Name = layer_name
 +    If Not layer_to_rename.CommitChanges() Then
 +      Return Result.Failure
 +    End If
 +    Return Result.Success
 +  End Function
 +End Class
 +d Namespace
 +</​code>​
 +===== Python =====
 +<code python>
 +import rhinoscriptsyntax as rs
 +from scriptcontext import doc
 +
 +def rename():
 +    layerName = rs.GetString("​Name of layer to rename"​)
 +    ​
 +    matchingLayers = [layer for layer in doc.Layers if layer.Name == layerName]
 +    ​
 +    layerToRename = None
 +    if len(matchingLayers) == 0:
 +        print "Layer \"​{0}\"​ does not exist."​.format(layerName)
 +        return
 +    if len(matchingLayers) == 1:
 +        layerToRename = matchingLayers[0]
 +    elif len(matchingLayers) > 1:
 +        i = 0;
 +        for layer in matchingLayers:​
 +            print "({0}) {1}"​.format(
 +                i+1, matchingLayers[i].FullPath.replace("::",​ "​->"​))
 +            i += 1
 +            ​
 +        selectedLayer = rs.GetInteger(
 +            "which layer?",​ -1, 1, len(matchingLayers))
 +        if selectedLayer == None:
 +            return
 +        layerToRename = matchingLayers[selectedLayer - 1]
 +    ​
 +    layerName = rs.GetString("​New layer name")
 +    layerToRename.Name = layerName
 +    layerToRename.CommitChanges()
 +    return
 +
 +if __name__ == "​__main__":​
 +    rename()
 +        ​
 +</​code>​
 +
 +{{tag>​Developer rhinocommon}}
  
developer/rhinocommonsamples/renamelayer.txt ยท Last modified: 2015/09/14 (external edit)