80 lines
3.4 KiB
C#
80 lines
3.4 KiB
C#
using System;
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using System.Linq.Expressions;
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using System.Reflection;
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namespace UnityEditor.Rendering
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{
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/// <summary>
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/// Contains a set of method to be able to manage Menu Items for the editor
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/// </summary>
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static class MenuManager
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{
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#region Add Menu Item
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static Action<string, string, bool, int, Action, Func<bool>> s_AddMenuItem = GetAddMenuItemMethod();
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static Action<string, string, bool, int, Action, Func<bool>> GetAddMenuItemMethod()
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{
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MethodInfo addMenuItemMethodInfo = typeof(Menu).GetMethod("AddMenuItem", BindingFlags.Static | BindingFlags.NonPublic);
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var nameParam = Expression.Parameter(typeof(string), "name");
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var shortcutParam = Expression.Parameter(typeof(string), "shortcut");
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var checkedParam = Expression.Parameter(typeof(bool), "checked");
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var priorityParam = Expression.Parameter(typeof(int), "priority");
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var executeParam = Expression.Parameter(typeof(Action), "execute");
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var validateParam = Expression.Parameter(typeof(Func<bool>), "validate");
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var addMenuItemExpressionCall = Expression.Call(null, addMenuItemMethodInfo,
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nameParam,
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shortcutParam,
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checkedParam,
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priorityParam,
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executeParam,
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validateParam);
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return Expression.Lambda<Action<string, string, bool, int, Action, Func<bool>>>(
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addMenuItemExpressionCall,
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nameParam,
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shortcutParam,
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checkedParam,
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priorityParam,
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executeParam,
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validateParam).Compile();
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}
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/// <summary>
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/// Adds a menu Item to the editor
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/// </summary>
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/// <param name="path">The path to the menu item</param>
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/// <param name="shortcut">The shortcut of the menu item</param>
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/// <param name="checked">If the item can have an state, pressed or not</param>
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/// <param name="priority">The priority of the menu item</param>
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/// <param name="execute">The action that will be called once the menu item is pressed</param>
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/// <param name="validate">The action that will be called to know if the menu itme is enabled</param>
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public static void AddMenuItem(string path, string shortcut, bool @checked, int priority, System.Action execute, System.Func<bool> validate)
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{
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s_AddMenuItem(path, shortcut, @checked, priority, execute, validate);
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}
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#endregion
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#region Remove Menu Item
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static Action<string> s_RemoveMenuItem = GetRemoveMenuItemMethod();
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static Action<string> GetRemoveMenuItemMethod()
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{
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MethodInfo removeMenuItemMethodInfo = typeof(Menu).GetMethod("RemoveMenuItem", BindingFlags.Static | BindingFlags.NonPublic);
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var nameParam = Expression.Parameter(typeof(string), "name");
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return Expression.Lambda<Action<string>>(
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Expression.Call(null, removeMenuItemMethodInfo, nameParam),
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nameParam).Compile();
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}
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#endregion
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/// <summary>
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/// Removes a Menu item from the editor, if the path is not found it does nothing
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/// </summary>
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/// <param name="path">The path of the menu item to be removed</param>
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public static void RemoveMenuItem(string path)
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{
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s_RemoveMenuItem(path);
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}
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}
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}
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