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Simple file and folder picker for ImGui.Net + uimgui（https://github.com/psydack/uimgui.git）
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| /// Reference: https://gist.github.com/prime31/91d1582624eb2635395417393018016e | |
| using ImGuiNET; | |
| using System; | |
| using System.Collections.Generic; | |
| using System.IO; | |
| using UnityEngine; | |
| namespace Nez.ImGuiTools | |
| { | |
| public class FilePicker | |
| { | |
| static readonly Dictionary<object, FilePicker> _filePickers = new Dictionary<object, FilePicker>(); | |
| public string RootFolder; | |
| public string CurrentFolder; | |
| public string SelectedFile; | |
| public List<string> AllowedExtensions; | |
| public bool OnlyAllowFolders; | |
| public static FilePicker GetFolderPicker(object o, string startingPath) | |
| => GetFilePicker(o, startingPath, null, true); | |
| public static FilePicker GetFilePicker(object o, string startingPath, string searchFilter = null, bool onlyAllowFolders = false) | |
| { | |
| if (File.Exists(startingPath)) | |
| { | |
| startingPath = new FileInfo(startingPath).DirectoryName; | |
| } | |
| else if (string.IsNullOrEmpty(startingPath) || !Directory.Exists(startingPath)) | |
| { | |
| startingPath = Environment.CurrentDirectory; | |
| if (string.IsNullOrEmpty(startingPath)) | |
| startingPath = AppContext.BaseDirectory; | |
| } | |
| if (!_filePickers.TryGetValue(o, out FilePicker fp)) | |
| { | |
| fp = new FilePicker(); | |
| fp.RootFolder = startingPath; | |
| fp.CurrentFolder = startingPath; | |
| fp.OnlyAllowFolders = onlyAllowFolders; | |
| if (searchFilter != null) | |
| { | |
| if (fp.AllowedExtensions != null) | |
| fp.AllowedExtensions.Clear(); | |
| else | |
| fp.AllowedExtensions = new List<string>(); | |
| fp.AllowedExtensions.AddRange(searchFilter.Split(new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries)); | |
| } | |
| _filePickers.Add(o, fp); | |
| } | |
| return fp; | |
| } | |
| public static void RemoveFilePicker(object o) => _filePickers.Remove(o); | |
| /// <summary> | |
| /// MODIFY: return true -> close | |
| /// </summary> | |
| /// <returns></returns> | |
| public bool Draw() | |
| { | |
| ImGui.Text("Current Folder: " + Path.GetRelativePath(RootFolder, CurrentFolder)); | |
| bool result = false; | |
| if (ImGui.BeginChild("Content", new Vector2(400, 400))) | |
| { | |
| var di = new DirectoryInfo(CurrentFolder); | |
| if (di.Exists) | |
| { | |
| if (di.Parent != null && CurrentFolder != RootFolder) | |
| { | |
| ImGui.PushStyleColor(ImGuiCol.Text, Color.yellow); | |
| if (ImGui.Selectable("../", false, ImGuiSelectableFlags.DontClosePopups)) | |
| CurrentFolder = di.Parent.FullName; | |
| ImGui.PopStyleColor(); | |
| } | |
| var fileSystemEntries = GetFileSystemEntries(di.FullName); | |
| foreach (var fse in fileSystemEntries) | |
| { | |
| if (Directory.Exists(fse)) | |
| { | |
| var name = Path.GetFileName(fse); | |
| ImGui.PushStyleColor(ImGuiCol.Text, Color.yellow); | |
| if (ImGui.Selectable(name + "/", false, ImGuiSelectableFlags.DontClosePopups)) | |
| CurrentFolder = fse; | |
| ImGui.PopStyleColor(); | |
| } | |
| else | |
| { | |
| var name = Path.GetFileName(fse); | |
| bool isSelected = SelectedFile == fse; | |
| if (ImGui.Selectable(name, isSelected, ImGuiSelectableFlags.DontClosePopups)) | |
| SelectedFile = fse; | |
| if (ImGui.IsMouseDoubleClicked(0)) | |
| { | |
| result = true; | |
| //ImGui.CloseCurrentPopup(); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| ImGui.EndChild(); | |
| if (ImGui.Button("Cancel")) | |
| { | |
| result = true; | |
| SelectedFile = null; | |
| //ImGui.CloseCurrentPopup(); | |
| } | |
| if (OnlyAllowFolders) | |
| { | |
| ImGui.SameLine(); | |
| if (ImGui.Button("Open")) | |
| { | |
| result = true; | |
| SelectedFile = CurrentFolder; | |
| //ImGui.CloseCurrentPopup(); | |
| } | |
| } | |
| else if (SelectedFile != null) | |
| { | |
| ImGui.SameLine(); | |
| if (ImGui.Button("Open")) | |
| { | |
| result = true; | |
| //ImGui.CloseCurrentPopup(); | |
| } | |
| } | |
| if (SelectedFile != null) | |
| ImGui.TextWrapped("Selected:" + SelectedFile); | |
| return result; | |
| } | |
| bool TryGetFileInfo(string fileName, out FileInfo realFile) | |
| { | |
| try | |
| { | |
| realFile = new FileInfo(fileName); | |
| return true; | |
| } | |
| catch | |
| { | |
| realFile = null; | |
| return false; | |
| } | |
| } | |
| List<string> GetFileSystemEntries(string fullName) | |
| { | |
| var files = new List<string>(); | |
| var dirs = new List<string>(); | |
| foreach (var fse in Directory.GetFileSystemEntries(fullName, "*")) | |
| { | |
| if (Directory.Exists(fse)) | |
| { | |
| dirs.Add(fse); | |
| } | |
| else if (!OnlyAllowFolders) | |
| { | |
| if (AllowedExtensions != null) | |
| { | |
| var ext = Path.GetExtension(fse); | |
| if (AllowedExtensions.Contains(ext)) | |
| files.Add(fse); | |
| } | |
| else | |
| { | |
| files.Add(fse); | |
| } | |
| } | |
| } | |
| var ret = new List<string>(dirs); | |
| ret.AddRange(files); | |
| return ret; | |
| } | |
| } | |
| } |
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| var isOpen = true; | |
| if (isOpen && ImGui.Begin("Read Text")) | |
| { | |
| var picker = FilePicker.GetFilePicker(this, Application.streamingAssetsPath, searchFilter: ".txt"); | |
| if (picker.Draw()) | |
| { | |
| var path = picker.SelectedFile; | |
| Debug.Log(path); | |
| // do something... | |
| isOpen = false; | |
| FilePicker.RemoveFilePicker(this); // You can remove this line, if you want to open dialog from same place next time | |
| } | |
| ImGui.End(); | |
| } |
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