UnityEditor.ParticleEffectUI.MultiParticleSystemGUI C# (CSharp) Method

        private void MultiParticleSystemGUI(bool verticalLayout)
        {
            ParticleSystem root = ParticleSystemEditorUtils.GetRoot(this.m_SelectedParticleSystem);
            GUILayout.BeginVertical(ParticleSystemStyles.Get().effectBgStyle, new GUILayoutOption[0]);
            this.m_EmitterAreaScrollPos = EditorGUILayout.BeginScrollView(this.m_EmitterAreaScrollPos, new GUILayoutOption[0]);
            Rect position = EditorGUILayout.BeginVertical(new GUILayoutOption[0]);
            this.m_EmitterAreaScrollPos -= EditorGUI.MouseDeltaReader(position, Event.current.alt);
            GUILayout.Space(3f);
            GUILayout.BeginHorizontal(new GUILayoutOption[0]);
            GUILayout.Space(3f);
            Color color = GUI.color;
            bool flag = Event.current.type == EventType.Repaint;
            bool flag2 = this.IsShowOnlySelectedMode();
            List<ParticleSystemUI> selectedParticleSystemUIs = this.GetSelectedParticleSystemUIs();
            for (int i = 0; i < this.m_Emitters.Length; i++)
            {
                if (i != 0)
                {
                    GUILayout.Space(ModuleUI.k_SpaceBetweenModules);
                }
                bool flag3 = selectedParticleSystemUIs.Contains(this.m_Emitters[i]);
                ModuleUI particleSystemRendererModuleUI = this.m_Emitters[i].GetParticleSystemRendererModuleUI();
                if ((flag && (particleSystemRendererModuleUI != null)) && !particleSystemRendererModuleUI.enabled)
                {
                    GUI.color = GetDisabledColor();
                }
                if ((flag && flag2) && !flag3)
                {
                    GUI.color = GetDisabledColor();
                }
                Rect rect = EditorGUILayout.BeginVertical(new GUILayoutOption[0]);
                if ((flag && flag3) && (this.m_Emitters.Length > 1))
                {
                    this.DrawSelectionMarker(rect);
                }
                this.m_Emitters[i].OnGUI(root, ModuleUI.k_CompactFixedModuleWidth, true);
                EditorGUILayout.EndVertical();
                GUI.color = color;
            }
            GUILayout.Space(5f);
            GUILayoutOption[] options = new GUILayoutOption[] { GUILayout.Width(20f) };
            if (GUILayout.Button(s_Texts.addParticleSystem, "OL Plus", options))
            {
                this.CreateParticleSystem(root, SubModuleUI.SubEmitterType.None);
            }
            GUILayout.FlexibleSpace();
            GUILayout.EndHorizontal();
            GUILayout.Space(4f);
            this.m_EmitterAreaScrollPos -= EditorGUI.MouseDeltaReader(position, true);
            GUILayout.FlexibleSpace();
            EditorGUILayout.EndVertical();
            EditorGUILayout.EndScrollView();
            GUILayout.EndVertical();
            this.HandleKeyboardShortcuts(root);
        }