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adding ability for IFileSystem to tell me when something changes on disk.

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first pass at implementing the windows version of the new interface methods
IViewPort now has a public method to call whenever you want to notify it that its underlying file has been changed.
Added 3 tests showing how the Editor and ViewPort should behave with this new functionality.
- Editor should hook up ViewPorts whenever a new tab is opened
- Editor should clear out ViewPorts whenever a tab is closed
- ViewPort should reload when the file is changed and it is not.

Note that the model isn't implemented yet. This is just some failing tests.
This commit is contained in:
Benjamin Popp
2018-11-28 22:16:43 -06:00
parent c8542fb32c
commit 0b60953ecc
7 changed files with 109 additions and 6 deletions
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32
Gen3Hex/View/WindowsFileSystem.cs
View File

@@ -1,11 +1,15 @@
using HavenSoft.Gen3Hex.Model;
using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows;
namespace HavenSoft.Gen3Hex.View {
public class WindowsFileSystem : IFileSystem {
private readonly Dictionary<string, List<FileSystemWatcher>> watchers = new Dictionary<string, List<FileSystemWatcher>>();
public string CopyText {
get => Clipboard.ContainsText() ? Clipboard.GetText() : string.Empty;
set => Clipboard.SetText(value);
@@ -15,9 +19,31 @@ namespace HavenSoft.Gen3Hex.View {
var dialog = new OpenFileDialog { Filter = CreateFilterFromOptions(extensionOptions) };
var result = dialog.ShowDialog();
if (result != true) return null;
if (!File.Exists(dialog.FileName)) return null;
var data = File.ReadAllBytes(dialog.FileName);
return new LoadedFile(dialog.FileName, data);
return LoadFile(dialog.FileName);
}
public LoadedFile LoadFile(string fileName) {
if (!File.Exists(fileName)) return null;
var data = File.ReadAllBytes(fileName);
return new LoadedFile(fileName, data);
}
public void AddListenerToFile(string fileName, Action<IFileSystem> listener) {
var watcher = new FileSystemWatcher(Path.GetDirectoryName(fileName)) {
NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName,
};
watcher.Changed += (sender, e) => {
if (e.FullPath.EndsWith(fileName)) listener(this);
};
watcher.EnableRaisingEvents = true;
if (!watchers.ContainsKey(fileName)) watchers[fileName] = new List<FileSystemWatcher>();
watchers[fileName].Add(watcher);
}
public void RemoveAllListenersForFile(string fileName) {
if (!watchers.ContainsKey(fileName)) return;
watchers[fileName].Clear();
}
public string RequestNewName(string currentName, params string[] extensionOptions) {