public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
MultiPropertyAttribute mAttribute = RetrieveAttributes();
// Calls to IsVisible. If it returns false for any attribute, the property will not be rendered.
foreach (MultiPropertyAttribute attr in mAttribute.stored)
{
if (!attr.IsVisible(property))
{
return;
}
}
// Calls to OnPreRender before the last attribute draws the UI.
foreach (MultiPropertyAttribute attr in mAttribute.stored)
{
attr.OnPreGUI(position, property);
}
// The last attribute is in charge of actually drawing something:
((MultiPropertyAttribute)mAttribute.stored.Last()).OnGUI(position, property, label);
// Calls to OnPostRender after the last attribute draws the UI. These are called in reverse order.
foreach (MultiPropertyAttribute attr in mAttribute.stored.Reverse())
{
attr.OnPostGUI(position, property);
}
}
public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
{
MultiPropertyAttribute mAttribute = RetrieveAttributes();
// If the attribute is invisible, regain the standard vertical spacing.
foreach (MultiPropertyAttribute attr in mAttribute.stored)
{
if (!attr.IsVisible(property))
{
return(-EditorGUIUtility.standardVerticalSpacing);
}
}
// In case no attribute returns a modified height, return the property's default one:
float height = base.GetPropertyHeight(property, label);
// Check if any of the attributes wants to modify height:
foreach (object atr in mAttribute.stored)
{
if (atr as MultiPropertyAttribute != null)
{
var tempheight = ((MultiPropertyAttribute)atr).GetPropertyHeight(property, label);
if (tempheight.HasValue)
{
height = tempheight.Value;
break;
}
}
}
return(height);
}
private MultiPropertyAttribute RetrieveAttributes()
{
MultiPropertyAttribute mAttribute = attribute as MultiPropertyAttribute;
// Get the attribute list, sorted by "order".
if (mAttribute.stored == null)
{
mAttribute.stored = fieldInfo.GetCustomAttributes(typeof(MultiPropertyAttribute), false).OrderBy(s => ((PropertyAttribute)s).order);
}
return(mAttribute);
}
public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
{
MultiPropertyAttribute thisAttribute = this.attribute as MultiPropertyAttribute;
float height = base.GetPropertyHeight(property, label);
if (thisAttribute != null && thisAttribute.stored.Count > 0)
{
height = thisAttribute.stored.Max(attr => attr.GetPropertyHeight(property, label) ?? height);
}
return(height);
}
// Draw the property inside the given rect
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
MultiPropertyAttribute thisAttribute = this.attribute as MultiPropertyAttribute;
if (thisAttribute == null)
{
base.OnGUI(position, property, label);
return;
}
// First get the attribute since it contains the range for the slider
if (thisAttribute.stored == null || thisAttribute.stored.Count == 0)
{
thisAttribute.stored = this.fieldInfo.GetCustomAttributes(typeof(MultiPropertyAttribute), false)
.Cast <MultiPropertyAttribute>()
.OrderBy(a => a.order).ToList();
}
// Store current GUI state
string origTooltip = GUI.tooltip;
Color origBackgroundColor = GUI.backgroundColor;
Color origColor = GUI.color;
Color origContentColor = GUI.contentColor;
bool origEnabled = GUI.enabled;
int origIndentLevel = EditorGUI.indentLevel;
bool propertyDrawn = false;
foreach (var attr in thisAttribute.stored)
{
label = attr.BuildLabel(label);
propertyDrawn |= attr.OnGUI(position, property, label);
}
if (!propertyDrawn)
{
EditorGUI.PropertyField(position, property, label);
}
// Restore GUI state
GUI.tooltip = origTooltip;
GUI.backgroundColor = origBackgroundColor;
GUI.color = origColor;
GUI.contentColor = origContentColor;
GUI.enabled = origEnabled;
EditorGUI.indentLevel = origIndentLevel;
}
