EditorEffects

using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
using UnityStandardAssets.ImageEffects;

public static class EditorEffects {

    private static bool enable {
        get {
            return EditorPrefs.GetBool("EffectsEnabled", true);
        }
        set {
            EditorPrefs.SetBool("EffectsEnabled", value);
        }
    }

    [MenuItem("Edit/Editor Effects #e", false, 0)]
    private static void EnableDisable() {

        enable = !enable;

        if(!enable)
            foreach(SceneView view in SceneView.sceneViews)
                foreach(var effect in view.camera.GetComponents<PostEffectsBase>())
                    GameObject.DestroyImmediate(effect);

        SceneView.RepaintAll();
    }

    [InitializeOnLoadMethod]
    private static void Init() {
        SceneView.onSceneGUIDelegate += (view) => {
            if(!view.camera)
                return;

            if(!enable || !Camera.main || !Camera.main.isActiveAndEnabled) {
                RemoveEffects(view.camera);
                RemovePostEffects(view.camera);
                return;
            }

            SyncEffects(Camera.main, view.camera);
            SyncPostEffects(Camera.main, view.camera);
        };
    }

    private static void RemoveEffects(Camera cam) {
        foreach(var comp in cam.GetComponents<ImageEffectBase>())
            if(comp)
                GameObject.DestroyImmediate(comp, false);
    }

    private static void SyncEffects(Camera source, Camera dest) {
        var sourceEffects = new List<ImageEffectBase>();
        source.GetComponents<ImageEffectBase>(sourceEffects);

        Component destEffect;
        foreach(var sourceEffect in sourceEffects)
            if(sourceEffect) {
                destEffect = dest.GetComponent(sourceEffect.GetType());
                if(!destEffect)
                    destEffect = dest.gameObject.AddComponent(sourceEffect.GetType());
                EditorUtility.CopySerialized(sourceEffect, destEffect);
            }

        foreach(var comp in dest.GetComponents<ImageEffectBase>())
            if(!comp || !source.GetComponent(comp.GetType()))
                GameObject.DestroyImmediate(comp, false);
    }

    private static void RemovePostEffects(Camera cam) {
        foreach(var comp in cam.GetComponents<PostEffectsBase>())
            if(comp)
                GameObject.DestroyImmediate(comp, false);
    }

    private static void SyncPostEffects(Camera source, Camera dest) {
        var sourceEffects = new List<PostEffectsBase>();
        source.GetComponents<PostEffectsBase>(sourceEffects);

        Component destEffect;
        foreach(var sourceEffect in sourceEffects)
            if(sourceEffect) {
                destEffect = dest.GetComponent(sourceEffect.GetType());
                if(!destEffect)
                    destEffect = dest.gameObject.AddComponent(sourceEffect.GetType());
                EditorUtility.CopySerialized(sourceEffect, destEffect);
            }

        foreach(var comp in dest.GetComponents<PostEffectsBase>())
            if(!comp || !source.GetComponent(comp.GetType()))
                GameObject.DestroyImmediate(comp, false);
    }
}