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Assets/SteamVR/Editor/SteamVR_Update.cs

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+//======= Copyright (c) Valve Corporation, All rights reserved. ===============
+//
+// Purpose: Notify developers when a new version of the plugin is available.
+//
+//=============================================================================
+
+using UnityEngine;
+using UnityEditor;
+using System.IO;
+using System.Text.RegularExpressions;
+
+[InitializeOnLoad]
+public class SteamVR_Update : EditorWindow
+{
+	const string currentVersion = "1.2.2";
+	const string versionUrl = "http://media.steampowered.com/apps/steamvr/unitypluginversion.txt";
+	const string notesUrl = "http://media.steampowered.com/apps/steamvr/unityplugin-v{0}.txt";
+	const string pluginUrl = "http://u3d.as/content/valve-corporation/steam-vr-plugin";
+	const string doNotShowKey = "SteamVR.DoNotShow.v{0}";
+
+	static bool gotVersion = false;
+	static WWW wwwVersion, wwwNotes;
+	static string version, notes;
+	static SteamVR_Update window;
+
+	static SteamVR_Update()
+	{
+		EditorApplication.update += Update;
+	}
+
+	static void Update()
+	{
+		if (!gotVersion)
+		{
+			if (wwwVersion == null)
+				wwwVersion = new WWW(versionUrl);
+
+			if (!wwwVersion.isDone)
+				return;
+
+			if (UrlSuccess(wwwVersion))
+				version = wwwVersion.text;
+
+			wwwVersion = null;
+			gotVersion = true;
+
+			if (ShouldDisplay())
+			{
+				var url = string.Format(notesUrl, version);
+				wwwNotes = new WWW(url);
+
+				window = GetWindow<SteamVR_Update>(true);
+				window.minSize = new Vector2(320, 440);
+				//window.title = "SteamVR";
+			}
+		}
+
+		if (wwwNotes != null)
+		{
+			if (!wwwNotes.isDone)
+				return;
+
+			if (UrlSuccess(wwwNotes))
+				notes = wwwNotes.text;
+
+			wwwNotes = null;
+
+			if (notes != "")
+				window.Repaint();
+		}
+
+		EditorApplication.update -= Update;
+	}
+
+	static bool UrlSuccess(WWW www)
+	{
+		if (!string.IsNullOrEmpty(www.error))
+			return false;
+		if (Regex.IsMatch(www.text, "404 not found", RegexOptions.IgnoreCase))
+			return false;
+		return true;
+	}
+
+	static bool ShouldDisplay()
+	{
+		if (string.IsNullOrEmpty(version))
+			return false;
+		if (version == currentVersion)
+			return false;
+		if (EditorPrefs.HasKey(string.Format(doNotShowKey, version)))
+			return false;
+
+		// parse to see if newer (e.g. 1.0.4 vs 1.0.3)
+		var versionSplit = version.Split('.');
+		var currentVersionSplit = currentVersion.Split('.');
+		for (int i = 0; i < versionSplit.Length && i < currentVersionSplit.Length; i++)
+		{
+			int versionValue, currentVersionValue;
+			if (int.TryParse(versionSplit[i], out versionValue) &&
+				int.TryParse(currentVersionSplit[i], out currentVersionValue))
+			{
+				if (versionValue > currentVersionValue)
+					return true;
+				if (versionValue < currentVersionValue)
+					return false;
+			}
+		}
+
+		// same up to this point, now differentiate based on number of sub values (e.g. 1.0.4.1 vs 1.0.4)
+		if (versionSplit.Length <= currentVersionSplit.Length)
+			return false;
+
+		return true;
+	}
+
+	Vector2 scrollPosition;
+	bool toggleState;
+
+	string GetResourcePath()
+	{
+		var ms = MonoScript.FromScriptableObject(this);
+		var path = AssetDatabase.GetAssetPath(ms);
+		path = Path.GetDirectoryName(path);
+		return path.Substring(0, path.Length - "Editor".Length) + "Textures/";
+	}
+
+	public void OnGUI()
+	{
+		EditorGUILayout.HelpBox("A new version of the SteamVR plugin is available!", MessageType.Warning);
+
+		var resourcePath = GetResourcePath();
+		var logo = AssetDatabase.LoadAssetAtPath<Texture2D>(resourcePath + "logo.png");
+		var rect = GUILayoutUtility.GetRect(position.width, 150, GUI.skin.box);
+		if (logo)
+			GUI.DrawTexture(rect, logo, ScaleMode.ScaleToFit);
+
+		scrollPosition = GUILayout.BeginScrollView(scrollPosition);
+
+		GUILayout.Label("Current version: " + currentVersion);
+		GUILayout.Label("New version: " + version);
+
+		if (notes != "")
+		{
+			GUILayout.Label("Release notes:");
+			EditorGUILayout.HelpBox(notes, MessageType.Info);
+		}
+
+		GUILayout.EndScrollView();
+
+		GUILayout.FlexibleSpace();
+
+		if (GUILayout.Button("Get Latest Version"))
+		{
+			Application.OpenURL(pluginUrl);
+		}
+
+		EditorGUI.BeginChangeCheck();
+		var doNotShow = GUILayout.Toggle(toggleState, "Do not prompt for this version again.");
+		if (EditorGUI.EndChangeCheck())
+		{
+			toggleState = doNotShow;
+			var key = string.Format(doNotShowKey, version);
+			if (doNotShow)
+				EditorPrefs.SetBool(key, true);
+			else
+				EditorPrefs.DeleteKey(key);
+		}
+	}
+}
+