CompoundButtonSaveInterceptor.cs

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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See LICENSE in the project root for license information.

using UnityEditor;
using UnityEngine;
using HoloToolkit.Unity.Buttons;

public class CompoundButtonSaveInterceptor : UnityEditor.AssetModificationProcessor
{
    public static string[] OnWillSaveAssets(string[] paths)
    {
        // Tell our mesh buttons and icons to switch over to non-instanced materials
        // This will prevent them from saving the scene with broken material links
        // Materials will be re-instanced immediately afterward so this should have no effect 

        CompoundButtonMesh[] meshButtons = GameObject.FindObjectsOfType<CompoundButtonMesh>();
        foreach (CompoundButtonMesh meshButton in meshButtons)
        {
            meshButton.OnWillSaveScene();
        }

        CompoundButtonIcon[] iconButtons = GameObject.FindObjectsOfType<CompoundButtonIcon>();
        foreach (CompoundButtonIcon iconButton in iconButtons)
        {
            iconButton.OnWillSaveScene();
        }

        return paths;
    }
}