GHZMRSpaceXR/Assets/OpenCVForUnity/Examples/Basic/Utils_GetFilePathExample/Utils_GetFilePathExample.cs

using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using System;
using System.Collections;
using System.Collections.Generic;
using OpenCVForUnity.CoreModule;
using OpenCVForUnity.VideoioModule;
using OpenCVForUnity.ImgprocModule;
using OpenCVForUnity.UnityUtils;

namespace OpenCVForUnitySample
{
    /// <summary>
    /// Utils_GetFilePath Example
    /// An example of how to get the readable path of a file in the "StreamingAssets" folder using the Utils class.
    /// </summary>
    public class Utils_GetFilePathExample : MonoBehaviour
    {
        /// <summary>
        /// The file path dropdown.
        /// </summary>
        public Dropdown filePathDropdown;

        /// <summary>
        /// The refresh toggle.
        /// </summary>
        public Toggle refreshToggle;

        /// <summary>
        /// The timeout dropdown.
        /// </summary>
        public Dropdown timeoutDropdown;

        /// <summary>
        /// The get file path button.
        /// </summary>
        public Button getFilePathButton;

        /// <summary>
        /// The get multiple file paths button.
        /// </summary>
        public Button getMultipleFilePathsButton;

        /// <summary>
        /// The get file path async button.
        /// </summary>
        public Button getFilePathAsyncButton;

        /// <summary>
        /// The get multiple file paths async button.
        /// </summary>
        public Button getMultipleFilePathsAsyncButton;

        /// <summary>
        /// The abort button.
        /// </summary>
        public Button abortButton;

        /// <summary>
        /// The file path input field.
        /// </summary>
        //        public InputField filePathInputField;
        public Text filePathInputField;

        string[] filePathPreset = new string[] {
            "768x576_mjpeg.mjpeg",
            "/lbpcascade_frontalface.xml",
            "calibration_images/left01.jpg",
            "xxx"
        };

        IEnumerator getFilePath_Coroutine;

        // Use this for initialization
        void Start ()
        {
            abortButton.interactable = false;
        }

        private void GetFilePath (string filePath, bool refresh, int timeout)
        {

            string readableFilePath = Utils.getFilePath (filePath, refresh, timeout);


            #if UNITY_WEBGL && !UNITY_EDITOR
            Debug.Log ("The Utils.getFilePath() method is not supported on WebGL platform.");
            filePathInputField.text = filePathInputField.text + "The Utils.getFilePath() method is not supported on WebGL platform." + "\n";
            if (!string.IsNullOrEmpty (readableFilePath)) {
                Debug.Log ("completed: " + "readableFilePath=" + readableFilePath);
                filePathInputField.text = filePathInputField.text + "completed: " + "readableFilePath=" + readableFilePath;
            }
            #else
            if (string.IsNullOrEmpty (readableFilePath)) {
                Debug.LogError ("completed: " + "readableFilePath= " + filePath + " is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. ");
                filePathInputField.text = filePathInputField.text + "completed: " + "readableFilePath= " + filePath + " is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. " + "\n";
            } else {
                Debug.Log ("completed: " + "readableFilePath= " + readableFilePath);
                filePathInputField.text = filePathInputField.text + "completed: " + "readableFilePath= " + readableFilePath + "\n";
            }
            #endif
        }

        private void GetMultipleFilePaths (string[] filePaths, bool refresh, int timeout)
        {

            string[] readableFilePaths = Utils.getMultipleFilePaths (filePaths, refresh, timeout);


            #if UNITY_WEBGL && !UNITY_EDITOR
            Debug.Log ("The Utils.getFilePath() method is not supported on WebGL platform.");
            filePathInputField.text = filePathInputField.text + "The Utils.getFilePath() method is not supported on WebGL platform." + "\n";
            for (int i = 0; i < readableFilePaths.Length; i++) {
                if (!string.IsNullOrEmpty (readableFilePaths [i])) {
                    Debug.Log ("readableFilePath[" + i + "]=" + readableFilePaths [i]);
                    filePathInputField.text = filePathInputField.text + "readableFilePath[" + i + "]=" + readableFilePaths [i];
                }
            }
            #else
            Debug.Log ("allCompleted:" + "\n");
            filePathInputField.text = filePathInputField.text + "allCompleted:" + "\n";
            for (int i = 0; i < readableFilePaths.Length; i++) {
                if (string.IsNullOrEmpty (readableFilePaths [i])) {
                    Debug.LogError ("readableFilePath[" + i + "]= " + filePaths [i] + " is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. ");
                    filePathInputField.text = filePathInputField.text + "readableFilePath[" + i + "]= " + filePaths [i] + " is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. " + "\n";
                } else {
                    Debug.Log ("readableFilePath[" + i + "]= " + readableFilePaths [i]);
                    filePathInputField.text = filePathInputField.text + "readableFilePath[" + i + "]= " + readableFilePaths [i] + "\n";
                }
            }
            #endif
        }

        private void GetFilePathAsync (string filePath, bool refresh, int timeout)
        {
            HideButton ();


            getFilePath_Coroutine = Utils.getFilePathAsync (filePath, (result) => { // completed callback
                getFilePath_Coroutine = null;
                ShowButton ();


                string readableFilePath = result;

                if (string.IsNullOrEmpty (readableFilePath)) {
                    Debug.LogError ("completed: " + "readableFilePath= " + filePath + " is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. ");
                    filePathInputField.text = filePathInputField.text + "completed: " + "readableFilePath= " + filePath + " is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. " + "\n";
                }

                Debug.Log ("completed: " + "readableFilePath= " + readableFilePath);
                filePathInputField.text = filePathInputField.text + "completed: " + "readableFilePath= " + readableFilePath + "\n";

            }, (path, progress) => { // progressChanged callback
                Debug.Log ("progressChanged: " + "path= " + path + " progress= " + progress);
                filePathInputField.text = filePathInputField.text + "progressChanged: " + "path= " + path + " progress= " + progress + "\n";

            }, (path, error, responseCode) => { // errorOccurred callback
                getFilePath_Coroutine = null;
                ShowButton ();

                Debug.Log ("errorOccurred: " + "path= " + path + " error= " + error + " responseCode= " + responseCode);
                filePathInputField.text = filePathInputField.text + "errorOccurred: " + "path= " + path + " error= " + error + " responseCode= " + responseCode + "\n";

            }, refresh, timeout);
                
            StartCoroutine (getFilePath_Coroutine);
        }

        private void GetMultipleFilePathsAsync (string[] filePaths, bool refresh, int timeout)
        {

            HideButton ();


            getFilePath_Coroutine = Utils.getMultipleFilePathsAsync (filePaths, (result) => { // allCompleted callback
                getFilePath_Coroutine = null;
                ShowButton ();


                string[] readableFilePaths = result;

                Debug.Log ("allCompleted:" + "\n");
                filePathInputField.text = filePathInputField.text + "allCompleted:" + "\n";
                for (int i = 0; i < readableFilePaths.Length; i++) {
                    if (string.IsNullOrEmpty (readableFilePaths [i])) {
                        Debug.LogError ("readableFilePath[" + i + "]= " + filePaths [i] + " is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. ");
                        filePathInputField.text = filePathInputField.text + "readableFilePath[" + i + "]= " + filePaths [i] + " is not loaded. Please copy from “OpenCVForUnity/StreamingAssets/” to “Assets/StreamingAssets/” folder. " + "\n";
                    } else {
                        Debug.Log ("readableFilePath[" + i + "]= " + readableFilePaths [i]);
                        filePathInputField.text = filePathInputField.text + "readableFilePath[" + i + "]= " + readableFilePaths [i] + "\n";
                    }
                }

            }, (path, progress) => { // progressChanged callback
                Debug.Log ("progressChanged: " + "path= " + path + " progress= " + progress);
                filePathInputField.text = filePathInputField.text + "progressChanged: " + "path= " + path + " progress= " + progress + "\n";

            }, (path, error, responseCode) => { // errorOccurred callback
                Debug.Log ("errorOccurred: " + "path= " + path + " error= " + error + " responseCode= " + responseCode);
                filePathInputField.text = filePathInputField.text + "errorOccurred: " + "path= " + path + " error= " + error + " responseCode= " + responseCode + "\n";

            }, refresh, timeout);

            StartCoroutine (getFilePath_Coroutine);
        }

        private void ShowButton ()
        {
            getFilePathButton.interactable = true;
            getMultipleFilePathsButton.interactable = true;
            getFilePathAsyncButton.interactable = true;
            getMultipleFilePathsAsyncButton.interactable = true;
            abortButton.interactable = false;
        }

        private void HideButton ()
        {
            getFilePathButton.interactable = false;
            getMultipleFilePathsButton.interactable = false;
            getFilePathAsyncButton.interactable = false;
            getMultipleFilePathsAsyncButton.interactable = false;
            abortButton.interactable = true;
        }

        // Update is called once per frame
        void Update ()
        {

        }

        /// <summary>
        /// Raises the destroy event.
        /// </summary>
        void OnDestroy ()
        {
            if (getFilePath_Coroutine != null) {
                StopCoroutine (getFilePath_Coroutine);
                ((IDisposable)getFilePath_Coroutine).Dispose ();
            }
        }

        /// <summary>
        /// Raises the back button click event.
        /// </summary>
        public void OnBackButtonClick ()
        {
            SceneManager.LoadScene ("OpenCVForUnityExample");
        }

        /// <summary>
        /// Raises the get file path button click event.
        /// </summary>
        public void OnGetFilePathButtonClick ()
        {
            bool refresh = refreshToggle.isOn;
            string[] enumNames = Enum.GetNames (typeof(TimeoutPreset));
            int timeout = (int)System.Enum.Parse (typeof(TimeoutPreset), enumNames [timeoutDropdown.value], true);

            filePathInputField.text = "";

            GetFilePath (filePathPreset [filePathDropdown.value], refresh, timeout);
        }

        /// <summary>
        /// Raises the get multiple file paths button click event.
        /// </summary>
        public void OnGetMultipleFilePathsButtonClick ()
        {
            bool refresh = refreshToggle.isOn;
            string[] enumNames = Enum.GetNames (typeof(TimeoutPreset));
            int timeout = (int)System.Enum.Parse (typeof(TimeoutPreset), enumNames [timeoutDropdown.value], true);

            filePathInputField.text = "";

            GetMultipleFilePaths (filePathPreset, refresh, timeout);
        }

        /// <summary>
        /// Raises the get file path async button click event.
        /// </summary>
        public void OnGetFilePathAsyncButtonClick ()
        {
            bool refresh = refreshToggle.isOn;
            string[] enumNames = Enum.GetNames (typeof(TimeoutPreset));
            int timeout = (int)System.Enum.Parse (typeof(TimeoutPreset), enumNames [timeoutDropdown.value], true);

            filePathInputField.text = "";

            GetFilePathAsync (filePathPreset [filePathDropdown.value], refresh, timeout);
        }

        /// <summary>
        /// Raises the get multiple file paths async button click event.
        /// </summary>
        public void OnGetMultipleFilePathsAsyncButtonClick ()
        {
            bool refresh = refreshToggle.isOn;
            string[] enumNames = Enum.GetNames (typeof(TimeoutPreset));
            int timeout = (int)System.Enum.Parse (typeof(TimeoutPreset), enumNames [timeoutDropdown.value], true);

            filePathInputField.text = "";

            GetMultipleFilePathsAsync (filePathPreset, refresh, timeout);
        }

        /// <summary>
        /// Raises the abort button click event.
        /// </summary>
        public void OnAbortButtonClick ()
        {
            if (getFilePath_Coroutine != null) {
                StopCoroutine (getFilePath_Coroutine);
                ((IDisposable)getFilePath_Coroutine).Dispose ();
            }

            ShowButton ();
        }

        /// <summary>
        /// Raises the on scroll rect value changed event.
        /// </summary>
        public void OnScrollRectValueChanged ()
        {
            if (filePathInputField.text.Length > 10000) {
                filePathInputField.text = filePathInputField.text.Substring (filePathInputField.text.Length - 10000);
            }
        }

        public enum TimeoutPreset : int
        {
            _0 = 0,
            _1 = 1,
            _10 = 10,
        }
    }
}