Quickly open properties with a single button click

QuickPropertyDrawer.cs

using UnityEngine;
using UnityEditor;

[CustomPropertyDrawer(typeof(Object), true)]
public class QuickPropertyDrawer : PropertyDrawer
{
  const float BUTTON_SIZE = 20f;
  public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
  {
      bool showButton = property.objectReferenceValue != null;

      float buttonSize = showButton ? BUTTON_SIZE-2 : 0;
      Rect propertyRect = new Rect(position.x, position.y, position.width - buttonSize, position.height);
      EditorGUI.PropertyField(propertyRect, property, label);

      Rect buttonRect = new Rect(propertyRect.xMax + 4, position.y + 1, (position.width - propertyRect.width), EditorGUIUtility.singleLineHeight + 1f);
      if (showButton && GUI.Button(buttonRect, EditorGUIUtility.IconContent("_Popup"), EditorStyles.iconButton))  // remove showButton to make the button always visible
      {
          if (property.objectReferenceValue is Component component)     // Opens the entire object instead of just the component (context awareness)
              EditorUtility.OpenPropertyEditor(component.gameObject);
          if (property.objectReferenceValue is Sprite sprite)           // Opens the texture instead of just the sprite (not useful)
              EditorUtility.OpenPropertyEditor(sprite.texture);
          else                                                          // Default to just opening it regularly
              EditorUtility.OpenPropertyEditor(property.objectReferenceValue);
      }
  }
}