Use placeholder text in CustomEditor

There's some way to put a placeholder text(you know, italic in gray) in the string box using custom editor or property drawer?

Here a example of string box photoshoped to look like I want:

 

haha I think about that yesterday before get sleep "maybe I could draw a text over the thex field and use a conditional to show it only when the text field is empty or not selected" xD

Now I only have one dobt left: There's a way to check when the field is selected or clicked?

Thanks in forward!

 

Ok, going to try my best on this workaround, thanks for answer!

 

Here's how I managed to implement this feature

Code (CSharp):

1. string PlaceHolderTextField(Rect rect, string input, string controlID, string placeHolder = "Enter Value...")
2. {
3.     if (Event.current.type != EventType.Layout)
4.     {
5.         GUI.SetNextControlName(controlID);
6.         if (!string.IsNullOrEmpty(input) || GUI.GetNameOfFocusedControl() == controlID)
7.             return GUI.TextField(rect, input);
8.         else
9.             GUI.TextField(rect, placeHolder, greyTextField);
10.     }
11.     return input;
12. }

Simply make sure the controlID is unique

Note: downside is GUI.TextField doesn't allow to paste values... and EditorGUI.TextField doesn't work GUI.SetNextControlName and GUI.GetNameOfFocusedControl functions afak

 

I think you could do it like this:

Code (CSharp):

1. //make an italic style textarea for the placeholder
2.                 var placeholderTextStyle = new GUIStyle(EditorStyles.textArea);
3.                 placeholderTextStyle.fontStyle = FontStyle.Italic;
4.                 //Output the real text field
5.                 myText = EditorGUI.TextArea(myRect, myText);
6.                 //if thats empty output a disabled dummy one
7.                 if (string.IsNullOrEmpty(myText))
8.                 {
9.                     EditorGUI.BeginDisabledGroup(true);
10.                     EditorGUI.TextArea(myRect, "Placeholder Text", placeholderTextStyle);
11.                     EditorGUI.EndDisabledGroup();
12.                 }