public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
prefabDropdown = attribute as PrefabDropdownAttribute;
//finding all prefabs with the desired component
if (prefabs == null)
{
FindPrefabs(property);
}
//displaying a message if the user provided an invalid path
if (!validPath)
{
EditorGUI.LabelField(position, label.text + " - Invalid PrefabDropdown path");
return;
}
//displaying a message if there are no matching prefabs in the folder
if (prefabs.Count == 0)
{
EditorGUI.LabelField(position, label.text + " - No prefabs of type at path");
return;
}
//finding the correct index when the component with this drawer is reshown in the inspector
if (index == -1)
{
index = Mathf.Max(0, 1 + prefabs.IndexOf((GameObject)property.objectReferenceValue));
}
position.width -= 20;
//showing the popup, setting the properties object refrence when index is changed
int i = EditorGUI.Popup(position, label.text, index, names);
if (i != index || property.objectReferenceValue == null)
{
index = i;
if (index == 0)
{
property.objectReferenceValue = null;
}
else if (prefabDropdown.propertyType == "GameObject")
{
property.objectReferenceValue = ((Component)prefabs[i - 1]).gameObject;
}
else
{
property.objectReferenceValue = prefabs[i - 1];
}
}
position.x += position.width;
position.width = 20;
//displaying a button to allow you to quickly find the selected object in the project window
if (GUI.Button(position, ">"))
{
if (property.objectReferenceValue != null)
{
if (prefabDropdown.propertyType == "GameObject")
{
Selection.activeGameObject = (GameObject)property.objectReferenceValue;
}
else
{
Selection.activeGameObject = ((Component)property.objectReferenceValue).gameObject;
}
}
}
}
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
prefabDropdown = attribute as PrefabDropdownAttribute;
if (editorSkin == null)
{
GetStyles();
}
//finding all prefabs with the desired component
if (prefabs == null)
{
FindPrefabs(property);
}
//displaying a message if the user provided an invalid path
if (!validPath)
{
EditorGUI.HelpBox(position, string.Format("{0} - path \"{1}\" does not exist in Assets", label.text, prefabDropdown.path), MessageType.Error);
return;
}
//displaying a message if there are no matching prefabs in the folder
if (prefabs.Count == 0)
{
EditorGUI.HelpBox(position, label.text + " - No prefabs of type at path", MessageType.Error);
return;
}
//finding the correct index when the component with this drawer is reshown in the inspector
if (index == -1)
{
index = Mathf.Max(0, 1 + prefabs.IndexOf((GameObject)property.objectReferenceValue));
}
position.width -= 20;
//showing the popup, setting the properties object refrence when index is changed
int i = EditorGUI.Popup(position, label.text, index, names);
if (i != index || property.objectReferenceValue == null)
{
index = i;
if (index == 0)
{
property.objectReferenceValue = null;
}
else if (prefabDropdown.propertyType == "GameObject")
{
property.objectReferenceValue = ((Component)prefabs[i - 1]).gameObject;
}
else
{
property.objectReferenceValue = prefabs[i - 1];
}
}
position.x += position.width - 1;
position.width = 21;
EditorGUI.BeginDisabledGroup(!property.objectReferenceValue);
//displaying a button to allow you to quickly find the selected object in the project window
if (GUI.Button(position, GUIContent.none, prefabSelectStyle))
{
if (property.objectReferenceValue != null)
{
if (prefabDropdown.propertyType == "GameObject")
{
Selection.activeGameObject = (GameObject)property.objectReferenceValue;
}
else
{
Selection.activeGameObject = ((Component)property.objectReferenceValue).gameObject;
}
}
}
EditorGUI.EndDisabledGroup();
}
