/// <summary>
/// Draw all UnityEventBase fields
/// </summary>
/// <param name="component"></param>
/// <param name="eventProperty"></param>
/// <returns></returns>
public static int DrawComponentEvents(SerializedProperty component, SerializedProperty eventProperty)
{
if (component.objectReferenceValue != null)
{
FieldInfo[] unityEventFields = GetAllFields(component.objectReferenceValue.GetType())
.Where(
field =>
typeof(UnityEventBase).IsAssignableFrom(field.FieldType) && (field.IsPublic ||
field.GetCustomAttributes(typeof(SerializeField), false).Length > 0)).ToArray();
var currentSelectedIndex = Array.FindIndex(unityEventFields, p => p.Name == eventProperty.stringValue);
var unityEventsDropDown = new DropDownMenu();
for (int i = 0; i < unityEventFields.Length; i++)
{
FieldInfo unityEventField = unityEventFields[i];
unityEventsDropDown.Add(new DropDownItem
{
Label = ObjectNames.NicifyVariableName(unityEventField.Name),
IsSelected = currentSelectedIndex == i,
Command = () => eventProperty.stringValue = unityEventField.Name,
});
}
if (unityEventFields.Length > 0)
{
EditorGUI.indentLevel++;
unityEventsDropDown.OnGUI("Event");
EditorGUI.indentLevel--;
}
else
{
EditorGUI.indentLevel++;
EditorGUILayout.LabelField("Event", "No available events");
eventProperty.stringValue = "";
EditorGUI.indentLevel--;
}
return(unityEventFields.Length);
}
return(0);
}
/// <summary>
/// Draw all UnityEventBase fields
/// </summary>
/// <param name="component"></param>
/// <param name="eventProperty"></param>
/// <returns></returns>
public static int DrawComponentEvents(SerializedProperty component, SerializedProperty eventProperty)
{
List <DropDownItem> unityEvents = PropertyBindingEditor.GetDropUnityEventDownItems(component.objectReferenceValue?.GetType(), eventProperty.stringValue, eventName => eventProperty.stringValue = eventName).ToList();
if (unityEvents.Count > 0)
{
var unityEventsDropDown = new DropDownMenu();
unityEvents.ForEach(dropDownItem => unityEventsDropDown.Add(dropDownItem));
EditorGUI.indentLevel++;
unityEventsDropDown.OnGUI("Event");
EditorGUI.indentLevel--;
}
else
{
EditorGUI.indentLevel++;
EditorGUILayout.LabelField("Event", "No available events");
eventProperty.stringValue = "";
EditorGUI.indentLevel--;
}
return(unityEvents.Count);
}
/// <summary>
/// Renders the given control.
/// </summary>
/// <param name="position">Rectangle on the screen to use for the render.</param>
/// <param name="property">The <see cref="SerializedProperty"/> for which to render the custom GUI.</param>
/// <param name="label">The label to render with the <paramref name="property"/>.</param>
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
var dropDownPosition = EditorGUI.PrefixLabel(position, label);
var enumType = typeof(EnumT);
var names = Enum.GetNames(enumType);
var values = Enum.GetValues(enumType).Cast <int>().ToList();
var selectedItem = property.intValue;
int newSelectedItem = selectedItem;
DropDownMenu menu = new DropDownMenu();
for (int i = 0; i < names.Length; i++)
{
var name = names[i];
var value = values[i];
var enumValueMember = enumType.GetMember(name).First();
var isObsolete = enumValueMember.GetCustomAttributes(typeof(ObsoleteAttribute), false).Any();
if (!isObsolete)
{
menu.Add(new DropDownItem
{
Label = name,
IsSelected = property.intValue == value,
Command = () => { property.intValue = value; },
});
}
}
menu.OnGUI(dropDownPosition);
if (newSelectedItem != selectedItem)
{
property.intValue = newSelectedItem;
}
}
private static int DrawBindingComponent(SerializedProperty componentPathProperty, string componentDescription, SerializedProperty updateTriggerProperty, SerializedProperty unityEventProperty, bool enableUpdateTriggers, bool resolveDataContext)
{
using (var changeScope = new EditorGUI.ChangeCheckScope())
{
EditorGUILayout.PropertyField(componentPathProperty, new GUIContent(componentPathProperty.displayName, componentDescription));
// If the binding target changes, reset the binding update trigger (since the type of the target will determine the available update triggers)
if (changeScope.changed)
{
updateTriggerProperty.intValue = (int)BindingUpdateTrigger.None;
unityEventProperty.stringValue = null;
}
}
Type resolvedType = PropertyBinding.GetComponentType((Component)componentPathProperty.FindPropertyRelative(nameof(PropertyBinding.ComponentPath.Component)).objectReferenceValue, resolveDataContext);
bool isINotifyPropertyChanged = typeof(System.ComponentModel.INotifyPropertyChanged).IsAssignableFrom(resolvedType);
// Try to set the target update trigger to a reasonable default
if (updateTriggerProperty.intValue == (int)BindingUpdateTrigger.None)
{
if (isINotifyPropertyChanged)
{
updateTriggerProperty.intValue = (int)BindingUpdateTrigger.PropertyChangedEvent;
}
}
// If the value never flows back from the target to the source, then there is no reason to pay attention to value change events on the target.
int updateTriggerCount = -1;
if (enableUpdateTriggers)
{
var dropDownMenu = new DropDownMenu();
if (isINotifyPropertyChanged)
{
dropDownMenu.Add(new DropDownItem
{
Label = "Property Changed",
IsSelected = updateTriggerProperty.intValue == (int)BindingUpdateTrigger.PropertyChangedEvent,
Command = () =>
{
updateTriggerProperty.intValue = (int)BindingUpdateTrigger.PropertyChangedEvent;
unityEventProperty.stringValue = null;
}
});
}
List <DropDownItem> unityEvents = PropertyBindingEditor.GetDropUnityEventDownItems(resolvedType, unityEventProperty.stringValue, unityEvent =>
{
unityEventProperty.stringValue = unityEvent;
updateTriggerProperty.intValue = (int)BindingUpdateTrigger.UnityEvent;
}).ToList();
if (dropDownMenu.ItemCount > 0 && unityEvents.Any())
{
dropDownMenu.Add(new DropDownItem());
}
unityEvents.ForEach(dropDownItem => dropDownMenu.Add(dropDownItem));
// Only show the update trigger dropdown if there is more than one choice
if (dropDownMenu.ItemCount > 1)
{
using (new EditorGUI.IndentLevelScope())
{
dropDownMenu.OnGUI("Event");
}
if (dropDownMenu.SelectedIndex < 0)
{
EditorGUILayout.HelpBox($"Select an event that indicates the property has changed, or update the binding mode.", MessageType.Warning);
}
}
updateTriggerCount = dropDownMenu.ItemCount;
}
return(updateTriggerCount);
}
public static void PropertyField(Rect position, SerializedProperty property, GUIContent label)
{
const float DropDownWidthFraction = 0.4f;
float dropDownWidth = (position.width - EditorGUIUtility.labelWidth) * DropDownWidthFraction;
position.width -= dropDownWidth;
EditorGUI.PropertyField(position, property, label);
var dropDownPosition = new Rect(position.xMax, position.y, dropDownWidth, EditorGUIUtility.singleLineHeight);
var menu = new DropDownMenu();
if (clipboard != null)
{
menu.Add(new DropDownItem
{
Label = $"Paste component: {clipboard.name} ({clipboard.GetType().Name})",
Command = () => { property.objectReferenceValue = clipboard; },
});
}
var component = property.objectReferenceValue as Component;
if (component != null && component.gameObject != null)
{
if (menu.ItemCount > 0)
{
menu.Add(new DropDownItem {
Label = null
});
}
var siblingComponents = component.gameObject.GetComponents <Component>();
var existingComponents = new Dictionary <string, int>();
foreach (var siblingComponent in siblingComponents)
{
bool currentlySelected = siblingComponent == component;
var componentName = siblingComponent.GetType().Name;
// The underlying UnityEditor.EditorGUI.Popup will not render duplicate entries. (aka. entries with the same display name).
// So if there are more than 1 component with the same name, then we must append a number to the name to make it unique.
var countOfComponentsWithSameName = siblingComponents.Count((c) => c.GetType().Name == componentName);
if (countOfComponentsWithSameName > 1)
{
if (!existingComponents.ContainsKey(componentName))
{
// For this loop through the components, this is the first one we've hit with this name.
existingComponents[componentName] = 1;
}
else
{
// Some number of components with this name already exist.
existingComponents[componentName]++;
}
componentName = $"{componentName} {existingComponents[componentName]}";
}
menu.Add(new DropDownItem
{
Label = $"{componentName}",
Command = () => { property.objectReferenceValue = siblingComponent; },
IsSelected = currentlySelected,
});
}
}
if (menu.ItemCount == 0)
{
menu.Add(new DropDownItem {
Label = "Instructions"
});
menu.Add(new DropDownItem());
menu.Add(new DropDownItem {
Label = "You can right click on a component and select 'Copy Component Reference' and then paste here using this menu."
});
menu.Add(new DropDownItem {
Label = "Or you can drag and drop a gameObject in the box to the left then use this menu to choose the component from that gameObject."
});
}
// Render the menu. If the user selects an item, it will execute that item's command.
menu.OnGUI(dropDownPosition);
}