public void OnGUI()
        {
            if (state.selection.canChangeAnimationClip)
            {
                var newClip = DoClipPopup(state.activeAnimationClip, AnimationWindowStyles.animClipToolbarPopup);
                if (state.selection.canCreateClips)
                {
                    addCI.SetSourceView();
                    if (GUILayout.Button(new GUIContent("+", "Create New Clip..."), EditorStyles.toolbarButton))
                    {
                        newClip = AnimationWindowUtility.CreateNewClip(state.selection.rootGameObject.name);
                        if (newClip)
                        {
                            AnimationWindowUtility.AddClipToAnimationPlayerComponent(state.activeAnimationPlayer, newClip);
                            addCI.selectedClip = newClip;
                            addCI.SendEvent();
                        }
                    }
                }
                if (state.activeAnimationClip != newClip)
                {
                    state.activeAnimationClip = newClip;

                    //  Layout has changed, bail out now.
                    EditorGUIUtility.ExitGUI();
                }
            }
            else if (state.activeAnimationClip != null)
            {
                Rect r = EditorGUILayout.GetControlRect(false, EditorGUIUtility.singleLineHeight, AnimationWindowStyles.toolbarLabel);
                EditorGUI.LabelField(r, CurveUtility.GetClipName(state.activeAnimationClip), AnimationWindowStyles.toolbarLabel);
            }
        }
        private void DisplayClipMenu(Rect position, AnimationClip clip)
        {
            popupCI.SetSourceView();

            AnimationSelectorWindow.DrawPresetButton(clip, GetOrderedClipList(), position, (selectedClip) => {
                popupCI.selectedClip = selectedClip;
                popupCI.SendEvent();
            });
        }