Call button in inspector window from the script

Hi, i want simulate click this button in inspector window from other scrpit, its possible?

 

Call the same function that button calls?

 

the function hace this code:

namespace UnityStandardAssets.Utility.Inspector
{
#if UNITY_EDITOR
[CustomPropertyDrawer(typeof (WaypointCircuit.WaypointList))]
public class WaypointListDrawer : PropertyDrawer
{
private float lineHeight = 18;
private float spacing = 4;


public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{

EditorGUI.BeginProperty(position, label, property);

float x = position.x;
float y = position.y;
float inspectorWidth = position.width;

// Draw label

// Don't make child fields be indented
var indent = EditorGUI.indentLevel;
EditorGUI.indentLevel = 0;

var items = property.FindPropertyRelative("items");
var titles = new string[] {"Transform", "", "", ""};
var props = new string[] {"transform", "^", "v", "-"};
var widths = new float[] {.7f, .1f, .1f, .1f};
float lineHeight = 18;
bool changedLength = false;

if (items.arraySize > 0)
{
for (int i = 0; i < items.arraySize; ++i)
{
var item = items.GetArrayElementAtIndex(i);
float rowX = x;
for (int n = 0; n < props.Length; ++n)
{
float w = widths[n]*inspectorWidth;

// Calculate rects
Rect rect = new Rect(rowX, y, w, lineHeight);
rowX += w;

if (i == -1)
{
EditorGUI.LabelField(rect, titles[n]);
}
else
{
if (n == 0)
{
EditorGUI.ObjectField(rect, item.objectReferenceValue, typeof (Transform), true);
}
else
{
if (GUI.Button(rect, props[n]))
{
switch (props[n])
{
case "-":
items.DeleteArrayElementAtIndex(i);
items.DeleteArrayElementAtIndex(i);
changedLength = true;
break;
case "v":
if (i > 0)
{
items.MoveArrayElement(i, i + 1);
}
break;
case "^":
if (i < items.arraySize - 1)
{
items.MoveArrayElement(i, i - 1);
}
break;
}
}
}
}
}//fin del for de props

y += lineHeight + spacing;
if (changedLength)
{
break;
}
}//fin del for de items
}
else
{
// add button
var addButtonRect = new Rect((x + position.width) - widths[widths.Length - 1]*inspectorWidth, y,
widths[widths.Length - 1]*inspectorWidth, lineHeight);
if (GUI.Button(addButtonRect, "+"))
{
items.InsertArrayElementAtIndex(items.arraySize);
}

y += lineHeight + spacing;
}

// add all button
var addAllButtonRect = new Rect(x, y, inspectorWidth, lineHeight);


if (GUI.Button(addAllButtonRect, "Assign using all child objects"))
{
var circuit = property.FindPropertyRelative("circuit").objectReferenceValue as WaypointCircuit;

Debug.Log("joder "+circuit);

var children = new Transform[circuit.transform.childCount];
int n = 0;
foreach (Transform child in circuit.transform)
{
children[n++] = child;
}
Array.Sort(children, new TransformNameComparer());
circuit.waypointList.items = new Transform[children.Length];
for (n = 0; n < children.Length; ++n)
{
circuit.waypointList.items[n] = children[n];
}
}
y += lineHeight + spacing;

// rename all button
var renameButtonRect = new Rect(x, y, inspectorWidth, lineHeight);
if (GUI.Button(renameButtonRect, "Auto Rename numerically from this order"))
{
var circuit = property.FindPropertyRelative("circuit").objectReferenceValue as WaypointCircuit;
int n = 0;
foreach (Transform child in circuit.waypointList.items)
{
child.name = "Waypoint " + (n++).ToString("000");
}
}
y += lineHeight + spacing;

// Set indent back to what it was
EditorGUI.indentLevel = indent;
EditorGUI.EndProperty();
}


public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
{
SerializedProperty items = property.FindPropertyRelative("items");
float lineAndSpace = lineHeight + spacing;
return 40 + (items.arraySize*lineAndSpace) + lineAndSpace;
}


// comparer for check distances in ray cast hits
public class TransformNameComparer : IComparer
{
public int Compare(object x, object y)
{
return ((Transform) x).name.CompareTo(((Transform) y).name);
}
}
}
#endif
}