Core.cs

using UnityEngine;
using UnityEngine.EventSystems;
using System.Collections;
using System.Collections.Generic;
using UnityEngine.UI;

namespace UI
{
    public class Core : MonoBehaviour
    {
        public bool pointerIsOverUIObject{ private set; get; }
        public bool pointerIsOverPlatformUIObject{ private set; get; }

        public static Core instance { private set; get; }

        public Camera UICamera;

        public LayoutSystem layoutSystem { private set; get; }

        public float UIScale = 0.0025f;
        public float pixelsPerMeter = 500f;
        public float aspectRatio = 1f;

        public Color TabHighlightColor;
        public Color ButtonBaseColor;
        public Color ButtonHighlightColor;

        public Sprite normalTabImage;
        public Sprite selectedTabImage;

        public GameObject indicatorLeft;
        public GameObject indicatorRight;

        public GameObject statusBar;
        private GameObject closePatientButton;
        private GameObject savePatientButton;

        private List<GameObject> activeIndicators = new List<GameObject> ();
        private int indicationID = 0;

        public GameObject PatientSelector;


        public Core()
        {
            if( instance != null )
                throw(new System.Exception ("Error: Cannot create more than one instance of UI.Core!"));
            instance = this;
        }

        public void OnEnable()
        {
            layoutSystem = new LayoutSystem ();

            indicatorLeft.SetActive (false);
            indicatorRight.SetActive (false);
            statusBar.SetActive (true);

            Transform tf = statusBar.transform.Find ("ButtonClose");
            if (tf != null) {
                closePatientButton = tf.gameObject;
                closePatientButton.GetComponent<Button> ().onClick.AddListener (() => closePatient ());
                closePatientButton.SetActive (false);
            } else {
                Debug.LogWarning ("ButtonClose not found on Status Bar!");
            }

            tf = statusBar.transform.Find ("ButtonSave");
            if (tf != null) {
                savePatientButton = tf.gameObject;
                savePatientButton.GetComponent<Button> ().onClick.AddListener (() => savePatient ());
                savePatientButton.SetActive (false);
            } else {
                Debug.LogWarning ("ButtonSave not found on Status Bar!");
            }

            PatientEventSystem.startListening (PatientEventSystem.Event.PATIENT_FinishedLoading, patientLoaded );
            //PatientEventSystem.startListening (PatientEventSystem.Event.PATIENT_Closed, hidePatientDefaultUI );
        }
        public void OnDisable()
        {
            //PatientEventSystem.stopListening (PatientEventSystem.Event.PATIENT_Loaded, showPatientDefaultUI);
            //PatientEventSystem.stopListening (PatientEventSystem.Event.PATIENT_Closed, hidePatientDefaultUI);
        }

        public void setPointerIsOnUI( bool onUI )
        {
            pointerIsOverUIObject = onUI;
        }
        public void setPointerIsOnPlatformUI( bool onUI )
        {
            pointerIsOverPlatformUIObject = onUI;
        }

        public void setCamera( Camera cam )
        {
            UICamera = cam;
            aspectRatio = (float)UICamera.targetTexture.width / (float)UICamera.targetTexture.height;
            layoutSystem.updateDimensions ();

            // Adjust position/size of the statusbar:
            Rect newRect = layoutSystem.getStatusBarPosition ();
            RectTransform widgetRect = statusBar.GetComponent<RectTransform> ();
            widgetRect.localPosition = newRect.position;
            widgetRect.sizeDelta = newRect.size;
        }

        public Widget getWidgetByName( string name )
        {
            foreach (Transform child in transform) {
                if (child.name == name) {
                    if (child.GetComponent<Widget> () != null) {
                        return child.GetComponent<Widget> ();
                    }
                }
            }
            return null;
        }

        public void selectTab( Button b )
        {
            ColorBlock colors = b.colors;
            colors.normalColor = TabHighlightColor;
            colors.highlightedColor = TabHighlightColor;
            b.colors = colors;
            b.image.sprite = selectedTabImage;
        }

        public void unselectTab( Button b )
        {
            ColorBlock colors = b.colors;
            colors.normalColor = ButtonBaseColor;
            colors.highlightedColor = ButtonBaseColor;
            b.colors = colors;
            b.image.sprite = normalTabImage;
        }

        public int addIndication( UI.Screen screen, string message )
        {
            if (activeIndicators.Count > 0) {
                clearIndication (indicationID);
            }

            if (screen == UI.Screen.left) {
                GameObject indicator1 = Instantiate (indicatorLeft) as GameObject;
                indicator1.GetComponent<Widget> ().layoutScreen = UI.Screen.right;
                indicator1.GetComponent<Widget> ().layoutAlignHorizontal = AlignmentH.center;
                indicator1.GetComponent<Widget> ().layoutAlignVertical = AlignmentV.center;
                indicator1.SetActive (true);
                Text t = indicator1.GetComponentInChildren<Text> ();
                t.text = message;
                indicator1.transform.SetParent (transform, false);
                activeIndicators.Add (indicator1);

                GameObject indicator2 = Instantiate (indicatorLeft) as GameObject;
                indicator2.GetComponent<Widget> ().layoutScreen = UI.Screen.center;
                indicator2.GetComponent<Widget> ().layoutAlignHorizontal = AlignmentH.center;
                indicator2.GetComponent<Widget> ().layoutAlignVertical = AlignmentV.center;
                indicator2.SetActive (true);
                t = indicator2.GetComponentInChildren<Text> ();
                t.text = message;
                indicator2.transform.SetParent (transform, false);
                activeIndicators.Add (indicator2);
            } else if (screen == UI.Screen.center) {
                GameObject indicator1 = Instantiate (indicatorLeft) as GameObject;
                indicator1.GetComponent<Widget> ().layoutScreen = UI.Screen.right;
                indicator1.GetComponent<Widget> ().layoutAlignHorizontal = AlignmentH.center;
                indicator1.GetComponent<Widget> ().layoutAlignVertical = AlignmentV.center;
                indicator1.SetActive (true);
                Text t = indicator1.GetComponentInChildren<Text> ();
                t.text = message;
                indicator1.transform.SetParent (transform, false);
                activeIndicators.Add (indicator1);

                GameObject indicator2 = Instantiate (indicatorRight) as GameObject;
                indicator2.GetComponent<Widget> ().layoutScreen = UI.Screen.left;
                indicator2.GetComponent<Widget> ().layoutAlignHorizontal = AlignmentH.center;
                indicator2.GetComponent<Widget> ().layoutAlignVertical = AlignmentV.center;
                indicator2.SetActive (true);
                t = indicator2.GetComponentInChildren<Text> ();
                t.text = message;
                indicator2.transform.SetParent (transform, false);
                activeIndicators.Add (indicator2);
            } else if (screen == UI.Screen.right) {
                GameObject indicator1 = Instantiate (indicatorRight) as GameObject;
                indicator1.GetComponent<Widget> ().layoutScreen = UI.Screen.left;
                indicator1.GetComponent<Widget> ().layoutAlignHorizontal = AlignmentH.center;
                indicator1.GetComponent<Widget> ().layoutAlignVertical = AlignmentV.center;
                indicator1.SetActive (true);
                Text t = indicator1.GetComponentInChildren<Text> ();
                t.text = message;
                indicator1.transform.SetParent (transform, false);
                activeIndicators.Add (indicator1);

                GameObject indicator2 = Instantiate (indicatorRight) as GameObject;
                indicator2.GetComponent<Widget> ().layoutScreen = UI.Screen.center;
                indicator2.GetComponent<Widget> ().layoutAlignHorizontal = AlignmentH.center;
                indicator2.GetComponent<Widget> ().layoutAlignVertical = AlignmentV.center;
                indicator2.SetActive (true);
                t = indicator2.GetComponentInChildren<Text> ();
                t.text = message;
                indicator2.transform.SetParent (transform, false);
                activeIndicators.Add (indicator2);
            }
            return (++indicationID);
        }

        public void clearIndication( int id )
        {
            if (indicationID != id)
                return;

            foreach (GameObject go in activeIndicators) {
                Destroy (go);
            }
            activeIndicators.Clear ();
        }

        public void closePatient()
        {
            Patient.close ();
            PatientEventSystem.triggerEvent (PatientEventSystem.Event.PATIENT_Closed);
            layoutSystem.closeAllWidgets ();
            closePatientButton.SetActive (false);
            savePatientButton.SetActive (false);
            PatientSelector.SetActive (true);
        }
        public void savePatient()
        {
            if (Patient.getLoadedPatient () != null) {
                Patient.getLoadedPatient ().save ();
                NotificationControl.instance.createNotification ("Patient saved.", new System.TimeSpan (0, 0, 5));
            }
        }

        public void patientLoaded( object obj = null )
        {
            closePatientButton.SetActive (true);
            savePatientButton.SetActive (true);
        }
    }
}