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| 1 | +using System; |
| 2 | +using System.Linq.Expressions; |
| 3 | +using System.Reflection; |
| 4 | + |
| 5 | +namespace UnityEditor.Rendering |
| 6 | +{ |
| 7 | + /// <summary> |
| 8 | + /// Contains a set of method to be able to manage Menu Items for the editor |
| 9 | + /// </summary> |
| 10 | + static class MenuManager |
| 11 | + { |
| 12 | + #region Add Menu Item |
| 13 | + static Action<string, string, bool, int, Action, Func<bool>> s_AddMenuItem = GetAddMenuItemMethod(); |
| 14 | + static Action<string, string, bool, int, Action, Func<bool>> GetAddMenuItemMethod() |
| 15 | + { |
| 16 | + MethodInfo addMenuItemMethodInfo = typeof(Menu).GetMethod("AddMenuItem", BindingFlags.Static | BindingFlags.NonPublic); |
| 17 | + var nameParam = Expression.Parameter(typeof(string), "name"); |
| 18 | + var shortcutParam = Expression.Parameter(typeof(string), "shortcut"); |
| 19 | + var checkedParam = Expression.Parameter(typeof(bool), "checked"); |
| 20 | + var priorityParam = Expression.Parameter(typeof(int), "priority"); |
| 21 | + var executeParam = Expression.Parameter(typeof(Action), "execute"); |
| 22 | + var validateParam = Expression.Parameter(typeof(Func<bool>), "validate"); |
| 23 | + |
| 24 | + var addMenuItemExpressionCall = Expression.Call(null, addMenuItemMethodInfo, |
| 25 | + nameParam, |
| 26 | + shortcutParam, |
| 27 | + checkedParam, |
| 28 | + priorityParam, |
| 29 | + executeParam, |
| 30 | + validateParam); |
| 31 | + |
| 32 | + return Expression.Lambda<Action<string, string, bool, int, Action, Func<bool>>>( |
| 33 | + addMenuItemExpressionCall, |
| 34 | + nameParam, |
| 35 | + shortcutParam, |
| 36 | + checkedParam, |
| 37 | + priorityParam, |
| 38 | + executeParam, |
| 39 | + validateParam).Compile(); |
| 40 | + } |
| 41 | + |
| 42 | + /// <summary> |
| 43 | + /// Adds a menu Item to the editor |
| 44 | + /// </summary> |
| 45 | + /// <param name="path">The path to the menu item</param> |
| 46 | + /// <param name="shortcut">The shortcut of the menu item</param> |
| 47 | + /// <param name="checked">If the item can have an state, pressed or not</param> |
| 48 | + /// <param name="priority">The priority of the menu item</param> |
| 49 | + /// <param name="execute">The action that will be called once the menu item is pressed</param> |
| 50 | + /// <param name="validate">The action that will be called to know if the menu itme is enabled</param> |
| 51 | + public static void AddMenuItem(string path, string shortcut, bool @checked, int priority, System.Action execute, System.Func<bool> validate) |
| 52 | + { |
| 53 | + s_AddMenuItem(path, shortcut, @checked, priority, execute, validate); |
| 54 | + } |
| 55 | + |
| 56 | + #endregion |
| 57 | + |
| 58 | + #region Remove Menu Item |
| 59 | + static Action<string> s_RemoveMenuItem = GetRemoveMenuItemMethod(); |
| 60 | + static Action<string> GetRemoveMenuItemMethod() |
| 61 | + { |
| 62 | + MethodInfo removeMenuItemMethodInfo = typeof(Menu).GetMethod("RemoveMenuItem", BindingFlags.Static | BindingFlags.NonPublic); |
| 63 | + var nameParam = Expression.Parameter(typeof(string), "name"); |
| 64 | + return Expression.Lambda<Action<string>>( |
| 65 | + Expression.Call(null, removeMenuItemMethodInfo, nameParam), |
| 66 | + nameParam).Compile(); |
| 67 | + } |
| 68 | + #endregion |
| 69 | + |
| 70 | + /// <summary> |
| 71 | + /// Removes a Menu item from the editor, if the path is not found it does nothing |
| 72 | + /// </summary> |
| 73 | + /// <param name="path">The path of the menu item to be removed</param> |
| 74 | + public static void RemoveMenuItem(string path) |
| 75 | + { |
| 76 | + s_RemoveMenuItem(path); |
| 77 | + } |
| 78 | + } |
| 79 | +} |
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