// Taken from EditorGUI in order to work arround the issue of ObjectField using different ControlIDs when a Serialized property is passed as argument.
private static Object ObjectFieldWithPPtrHashID(GUIContent label, Object obj, Type objType, bool allowSceneObjects, params GUILayoutOption[] options)
{
var height = EditorGUIUtility.HasObjectThumbnail(objType) ? EditorGUI.kObjectFieldThumbnailHeight : EditorGUI.kSingleLineHeight;
Rect position = EditorGUILayout.GetControlRect(true, height, options);
int id = GUIUtility.GetControlID(s_PPtrHash, FocusType.Keyboard, position);
position = EditorGUI.PrefixLabel(position, id, label);
if (EditorGUIUtility.HasObjectThumbnail(objType) && position.height > EditorGUI.kSingleLineHeight)
{
// Make object field with thumbnail quadratic and align to the right
float size = Mathf.Min(position.width, position.height);
position.height = size;
position.xMin = position.xMax - size;
}
return(EditorGUI.DoObjectField(position, position, id, obj, null, objType, null, allowSceneObjects));
}
// This method takes either object reference directly, or via SerializedObject.
// Since it's not easy to know which parameters are mutually exclusively used, this method is
// private and internal/public methods instead EITHER take SerializedObject OR direct reference.
static Object DoObjectField(Rect position, Rect dropRect, int id, Object obj, Object objBeingEdited, System.Type objType, SerializedProperty property, ObjectFieldValidator validator, bool allowSceneObjects, GUIStyle style)
{
if (validator == null)
{
validator = ValidateObjectFieldAssignment;
}
if (property != null)
{
obj = property.objectReferenceValue;
}
Event evt = Event.current;
EventType eventType = evt.type;
// special case test, so we continue to ping/select objects with the object field disabled
if (!GUI.enabled && GUIClip.enabled && (Event.current.rawType == EventType.MouseDown))
{
eventType = Event.current.rawType;
}
bool hasThumbnail = EditorGUIUtility.HasObjectThumbnail(objType);
// Determine visual type
ObjectFieldVisualType visualType = ObjectFieldVisualType.IconAndText;
if (hasThumbnail && position.height <= kObjectFieldMiniThumbnailHeight && position.width <= kObjectFieldMiniThumbnailWidth)
{
visualType = ObjectFieldVisualType.MiniPreview;
}
else if (hasThumbnail && position.height > kSingleLineHeight)
{
visualType = ObjectFieldVisualType.LargePreview;
}
Vector2 oldIconSize = EditorGUIUtility.GetIconSize();
if (visualType == ObjectFieldVisualType.IconAndText)
{
EditorGUIUtility.SetIconSize(new Vector2(12, 12)); // Have to be this small to fit inside a single line height ObjectField
}
else if (visualType == ObjectFieldVisualType.LargePreview)
{
EditorGUIUtility.SetIconSize(new Vector2(64, 64));
}
switch (eventType)
{
case EventType.DragExited:
if (GUI.enabled)
{
HandleUtility.Repaint();
}
break;
case EventType.DragUpdated:
case EventType.DragPerform:
if (eventType == EventType.DragPerform)
{
string errorString;
if (!ValidDroppedObject(DragAndDrop.objectReferences, objType, out errorString))
{
Object reference = DragAndDrop.objectReferences[0];
EditorUtility.DisplayDialog("Can't assign script", errorString, "OK");
break;
}
}
if (dropRect.Contains(Event.current.mousePosition) && GUI.enabled)
{
Object[] references = DragAndDrop.objectReferences;
Object validatedObject = validator(references, objType, property, ObjectFieldValidatorOptions.None);
if (validatedObject != null)
{
// If scene objects are not allowed and object is a scene object then clear
if (!allowSceneObjects && !EditorUtility.IsPersistent(validatedObject))
{
validatedObject = null;
}
}
if (validatedObject != null)
{
DragAndDrop.visualMode = DragAndDropVisualMode.Generic;
if (eventType == EventType.DragPerform)
{
if (property != null)
{
property.objectReferenceValue = validatedObject;
}
else
{
obj = validatedObject;
}
GUI.changed = true;
DragAndDrop.AcceptDrag();
DragAndDrop.activeControlID = 0;
}
else
{
DragAndDrop.activeControlID = id;
}
Event.current.Use();
}
}
break;
case EventType.MouseDown:
// Ignore right clicks
if (Event.current.button != 0)
{
break;
}
if (position.Contains(Event.current.mousePosition))
{
// Get button rect for Object Selector
Rect buttonRect = GetButtonRect(visualType, position);
EditorGUIUtility.editingTextField = false;
if (buttonRect.Contains(Event.current.mousePosition))
{
if (GUI.enabled)
{
GUIUtility.keyboardControl = id;
if (property != null)
{
ObjectSelector.get.Show(objType, property, allowSceneObjects);
}
else
{
ObjectSelector.get.Show(obj, objType, objBeingEdited, allowSceneObjects);
}
ObjectSelector.get.objectSelectorID = id;
evt.Use();
GUIUtility.ExitGUI();
}
}
else
{
Object actualTargetObject = property != null ? property.objectReferenceValue : obj;
Component com = actualTargetObject as Component;
if (com)
{
actualTargetObject = com.gameObject;
}
if (showMixedValue)
{
actualTargetObject = null;
}
// One click shows where the referenced object is, or pops up a preview
if (Event.current.clickCount == 1)
{
GUIUtility.keyboardControl = id;
PingObjectOrShowPreviewOnClick(actualTargetObject, position);
evt.Use();
}
// Double click opens the asset in external app or changes selection to referenced object
else if (Event.current.clickCount == 2)
{
if (actualTargetObject)
{
AssetDatabase.OpenAsset(actualTargetObject);
GUIUtility.ExitGUI();
}
evt.Use();
}
}
}
break;
case EventType.ExecuteCommand:
string commandName = evt.commandName;
if (commandName == ObjectSelector.ObjectSelectorUpdatedCommand && ObjectSelector.get.objectSelectorID == id && GUIUtility.keyboardControl == id && (property == null || !property.isScript))
{
return(AssignSelectedObject(property, validator, objType, evt));
}
else if (commandName == ObjectSelector.ObjectSelectorClosedCommand && ObjectSelector.get.objectSelectorID == id && GUIUtility.keyboardControl == id && property != null && property.isScript)
{
if (ObjectSelector.get.GetInstanceID() == 0)
{
// User canceled object selection; don't apply
evt.Use();
break;
}
return(AssignSelectedObject(property, validator, objType, evt));
}
break;
case EventType.KeyDown:
if (GUIUtility.keyboardControl == id)
{
if (evt.keyCode == KeyCode.Backspace || (evt.keyCode == KeyCode.Delete && (evt.modifiers & EventModifiers.Shift) == 0))
{
if (property != null)
{
property.objectReferenceValue = null;
}
else
{
obj = null;
}
GUI.changed = true;
evt.Use();
}
// Apparently we have to check for the character being space instead of the keyCode,
// otherwise the Inspector will maximize upon pressing space.
if (evt.MainActionKeyForControl(id))
{
if (property != null)
{
ObjectSelector.get.Show(objType, property, allowSceneObjects);
}
else
{
ObjectSelector.get.Show(obj, objType, objBeingEdited, allowSceneObjects);
}
ObjectSelector.get.objectSelectorID = id;
evt.Use();
GUIUtility.ExitGUI();
}
}
break;
case EventType.Repaint:
GUIContent temp;
if (showMixedValue)
{
temp = s_MixedValueContent;
}
else if (property != null)
{
temp = EditorGUIUtility.TempContent(property.objectReferenceStringValue, AssetPreview.GetMiniThumbnail(property.objectReferenceValue));
obj = property.objectReferenceValue;
if (obj != null)
{
Object[] references = { obj };
if (EditorSceneManager.preventCrossSceneReferences && CheckForCrossSceneReferencing(obj, property.serializedObject.targetObject))
{
if (!EditorApplication.isPlaying)
{
temp = s_SceneMismatch;
}
else
{
temp.text = temp.text + string.Format(" ({0})", GetGameObjectFromObject(obj).scene.name);
}
}
else if (validator(references, objType, property, ObjectFieldValidatorOptions.ExactObjectTypeValidation) == null)
{
temp = s_TypeMismatch;
}
}
}
else
{
temp = EditorGUIUtility.ObjectContent(obj, objType);
}
switch (visualType)
{
case ObjectFieldVisualType.IconAndText:
BeginHandleMixedValueContentColor();
style.Draw(position, temp, id, DragAndDrop.activeControlID == id, position.Contains(Event.current.mousePosition));
Rect buttonRect = EditorStyles.objectFieldButton.margin.Remove(GetButtonRect(visualType, position));
EditorStyles.objectFieldButton.Draw(buttonRect, GUIContent.none, id, DragAndDrop.activeControlID == id, buttonRect.Contains(Event.current.mousePosition));
EndHandleMixedValueContentColor();
break;
case ObjectFieldVisualType.LargePreview:
DrawObjectFieldLargeThumb(position, id, obj, temp);
break;
case ObjectFieldVisualType.MiniPreview:
DrawObjectFieldMiniThumb(position, id, obj, temp);
break;
default:
throw new ArgumentOutOfRangeException();
}
break;
}
EditorGUIUtility.SetIconSize(oldIconSize);
return(obj);
}
static Object DoObjectField(Rect position, Rect dropRect, int id, Object obj, Object objBeingEdited, System.Type objType, System.Type additionalType, SerializedProperty property, ObjectFieldValidator validator, bool allowSceneObjects, GUIStyle style, GUIStyle buttonStyle)
{
if (validator == null)
{
validator = ValidateObjectFieldAssignment;
}
if (property != null)
{
obj = property.objectReferenceValue;
}
Event evt = Event.current;
EventType eventType = evt.type;
// special case test, so we continue to ping/select objects with the object field disabled
if (!GUI.enabled && GUIClip.enabled && (Event.current.rawType == EventType.MouseDown))
{
eventType = Event.current.rawType;
}
bool hasThumbnail = EditorGUIUtility.HasObjectThumbnail(objType);
// Determine visual type
ObjectFieldVisualType visualType = ObjectFieldVisualType.IconAndText;
if (hasThumbnail && position.height <= kObjectFieldMiniThumbnailHeight && position.width <= kObjectFieldMiniThumbnailWidth)
{
visualType = ObjectFieldVisualType.MiniPreview;
}
else if (hasThumbnail && position.height > kSingleLineHeight)
{
visualType = ObjectFieldVisualType.LargePreview;
}
Vector2 oldIconSize = EditorGUIUtility.GetIconSize();
if (visualType == ObjectFieldVisualType.IconAndText)
{
EditorGUIUtility.SetIconSize(new Vector2(12, 12)); // Have to be this small to fit inside a single line height ObjectField
}
else if (visualType == ObjectFieldVisualType.LargePreview)
{
EditorGUIUtility.SetIconSize(new Vector2(64, 64));
}
if ((eventType == EventType.MouseDown && Event.current.button == 1 ||
(eventType == EventType.ContextClick && visualType == ObjectFieldVisualType.IconAndText)) &&
position.Contains(Event.current.mousePosition))
{
var actualObject = property != null ? property.objectReferenceValue : obj;
var contextMenu = new GenericMenu();
if (FillPropertyContextMenu(property, null, contextMenu) != null)
{
contextMenu.AddSeparator("");
}
contextMenu.AddItem(GUIContent.Temp("Properties..."), false, () => PropertyEditor.OpenPropertyEditor(actualObject));
contextMenu.DropDown(position);
Event.current.Use();
}
switch (eventType)
{
case EventType.DragExited:
if (GUI.enabled)
{
HandleUtility.Repaint();
}
break;
case EventType.DragUpdated:
case EventType.DragPerform:
if (eventType == EventType.DragPerform)
{
string errorString;
if (!ValidDroppedObject(DragAndDrop.objectReferences, objType, out errorString))
{
Object reference = DragAndDrop.objectReferences[0];
EditorUtility.DisplayDialog("Can't assign script", errorString, "OK");
break;
}
}
if (dropRect.Contains(Event.current.mousePosition) && GUI.enabled)
{
Object[] references = DragAndDrop.objectReferences;
Object validatedObject = validator(references, objType, property, ObjectFieldValidatorOptions.None);
if (validatedObject != null)
{
// If scene objects are not allowed and object is a scene object then clear
if (!allowSceneObjects && !EditorUtility.IsPersistent(validatedObject))
{
validatedObject = null;
}
}
if (validatedObject != null)
{
DragAndDrop.visualMode = DragAndDropVisualMode.Generic;
if (eventType == EventType.DragPerform)
{
if (property != null)
{
property.objectReferenceValue = validatedObject;
}
else
{
obj = validatedObject;
}
GUI.changed = true;
DragAndDrop.AcceptDrag();
DragAndDrop.activeControlID = 0;
}
else
{
DragAndDrop.activeControlID = id;
}
Event.current.Use();
}
}
break;
case EventType.MouseDown:
if (position.Contains(Event.current.mousePosition) && Event.current.button == 0)
{
// Get button rect for Object Selector
Rect buttonRect = GetButtonRect(visualType, position);
EditorGUIUtility.editingTextField = false;
if (buttonRect.Contains(Event.current.mousePosition))
{
if (GUI.enabled)
{
GUIUtility.keyboardControl = id;
var types = additionalType == null ? new Type[] { objType } : new Type[] { objType, additionalType };
if (property != null)
{
ObjectSelector.get.Show(types, property, allowSceneObjects);
}
else
{
ObjectSelector.get.Show(obj, types, objBeingEdited, allowSceneObjects);
}
ObjectSelector.get.objectSelectorID = id;
evt.Use();
GUIUtility.ExitGUI();
}
}
else
{
Object actualTargetObject = property != null ? property.objectReferenceValue : obj;
Component com = actualTargetObject as Component;
if (com)
{
actualTargetObject = com.gameObject;
}
if (showMixedValue)
{
actualTargetObject = null;
}
// One click shows where the referenced object is, or pops up a preview
if (Event.current.clickCount == 1)
{
GUIUtility.keyboardControl = id;
PingObjectOrShowPreviewOnClick(actualTargetObject, position);
var selectedMaterial = actualTargetObject as Material;
if (selectedMaterial != null)
{
PingObjectInSceneViewOnClick(selectedMaterial);
}
evt.Use();
}
// Double click opens the asset in external app or changes selection to referenced object
else if (Event.current.clickCount == 2)
{
if (actualTargetObject)
{
AssetDatabase.OpenAsset(actualTargetObject);
evt.Use();
GUIUtility.ExitGUI();
}
}
}
}
break;
case EventType.ExecuteCommand:
string commandName = evt.commandName;
if (commandName == ObjectSelector.ObjectSelectorUpdatedCommand && ObjectSelector.get.objectSelectorID == id && GUIUtility.keyboardControl == id && (property == null || !property.isScript))
{
return(AssignSelectedObject(property, validator, objType, evt));
}
else if (commandName == ObjectSelector.ObjectSelectorClosedCommand && ObjectSelector.get.objectSelectorID == id && GUIUtility.keyboardControl == id && property != null && property.isScript)
{
if (ObjectSelector.get.GetInstanceID() == 0)
{
// User canceled object selection; don't apply
evt.Use();
break;
}
return(AssignSelectedObject(property, validator, objType, evt));
}
else if ((evt.commandName == EventCommandNames.Delete || evt.commandName == EventCommandNames.SoftDelete) && GUIUtility.keyboardControl == id)
{
if (property != null)
{
property.objectReferenceValue = null;
}
else
{
obj = null;
}
GUI.changed = true;
evt.Use();
}
break;
case EventType.ValidateCommand:
if ((evt.commandName == EventCommandNames.Delete || evt.commandName == EventCommandNames.SoftDelete) && GUIUtility.keyboardControl == id)
{
evt.Use();
}
break;
case EventType.KeyDown:
if (GUIUtility.keyboardControl == id)
{
if (evt.keyCode == KeyCode.Backspace || (evt.keyCode == KeyCode.Delete && (evt.modifiers & EventModifiers.Shift) == 0))
{
if (property != null)
{
if (property.propertyPath.EndsWith("]"))
{
var parentArrayPropertyPath = property.propertyPath.Substring(0, property.propertyPath.LastIndexOf(".Array.data[", StringComparison.Ordinal));
var parentArrayProperty = property.serializedObject.FindProperty(parentArrayPropertyPath);
bool isReorderableList = PropertyHandler.s_reorderableLists.ContainsKey(ReorderableListWrapper.GetPropertyIdentifier(parentArrayProperty));
// If it's an element of an non-orderable array, remove that element from the array
if (!isReorderableList)
{
TargetChoiceHandler.DeleteArrayElement(property);
}
else
{
property.objectReferenceValue = null;
}
}
else
{
property.objectReferenceValue = null;
}
}
else
{
obj = null;
}
GUI.changed = true;
evt.Use();
}
// Apparently we have to check for the character being space instead of the keyCode,
// otherwise the Inspector will maximize upon pressing space.
if (evt.MainActionKeyForControl(id))
{
var types = additionalType == null ? new Type[] { objType } : new Type[] { objType, additionalType };
if (property != null)
{
ObjectSelector.get.Show(types, property, allowSceneObjects);
}
else
{
ObjectSelector.get.Show(obj, types, objBeingEdited, allowSceneObjects);
}
ObjectSelector.get.objectSelectorID = id;
evt.Use();
GUIUtility.ExitGUI();
}
}
break;
case EventType.Repaint:
GUIContent temp;
if (showMixedValue)
{
temp = s_MixedValueContent;
}
else
{
// If obj or objType are both null, we have to rely on
// property.objectReferenceStringValue to display None/Missing and the
// correct type. But if not, EditorGUIUtility.ObjectContent is more reliable.
// It can take a more specific object type specified as argument into account,
// and it gets the icon at the same time.
if (obj == null && objType == null && property != null)
{
temp = EditorGUIUtility.TempContent(property.objectReferenceStringValue);
}
else
{
// In order for ObjectContext to be able to distinguish between None/Missing,
// we need to supply an instanceID. For some reason, getting the instanceID
// from property.objectReferenceValue is not reliable, so we have to
// explicitly check property.objectReferenceInstanceIDValue if a property exists.
if (property != null)
{
temp = EditorGUIUtility.ObjectContent(obj, objType, property.objectReferenceInstanceIDValue);
}
else
{
temp = EditorGUIUtility.ObjectContent(obj, objType);
}
}
if (property != null)
{
if (obj != null)
{
Object[] references = { obj };
if (EditorSceneManager.preventCrossSceneReferences && CheckForCrossSceneReferencing(obj, property.serializedObject.targetObject))
{
if (!EditorApplication.isPlaying)
{
temp = s_SceneMismatch;
}
else
{
temp.text = temp.text + string.Format(" ({0})", GetGameObjectFromObject(obj).scene.name);
}
}
else if (validator(references, objType, property, ObjectFieldValidatorOptions.ExactObjectTypeValidation) == null)
{
temp = s_TypeMismatch;
}
}
}
}
switch (visualType)
{
case ObjectFieldVisualType.IconAndText:
BeginHandleMixedValueContentColor();
style.Draw(position, temp, id, DragAndDrop.activeControlID == id, position.Contains(Event.current.mousePosition));
Rect buttonRect = buttonStyle.margin.Remove(GetButtonRect(visualType, position));
buttonStyle.Draw(buttonRect, GUIContent.none, id, DragAndDrop.activeControlID == id, buttonRect.Contains(Event.current.mousePosition));
EndHandleMixedValueContentColor();
break;
case ObjectFieldVisualType.LargePreview:
DrawObjectFieldLargeThumb(position, id, obj, temp);
break;
case ObjectFieldVisualType.MiniPreview:
DrawObjectFieldMiniThumb(position, id, obj, temp);
break;
default:
throw new ArgumentOutOfRangeException();
}
break;
}
EditorGUIUtility.SetIconSize(oldIconSize);
return(obj);
}
