Initial commit

Library/PackageCache/com.unity.timeline@1.2.18/Editor/Actions/Menus/MenuItemActionBase.cs

@@ -0,0 +1,177 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using UnityEngine;
+
+namespace UnityEditor.Timeline
+{
+    enum MenuActionDisplayState
+    {
+        Visible,
+        Disabled,
+        Hidden
+    }
+
+    struct MenuActionItem
+    {
+        public string category;
+        public string entryName;
+        public string shortCut;
+        public int priority;
+        public bool isChecked;
+        public bool isActiveInMode;
+        public MenuActionDisplayState state;
+        public GenericMenu.MenuFunction callback;
+    }
+
+    class MenuItemActionBase
+    {
+        public Vector2? mousePosition { get; set; }
+
+        protected static bool s_ShowActionTriggeredByShortcut = false;
+
+        private static MenuEntryAttribute NoMenu = new MenuEntryAttribute(null, MenuOrder.DefaultPriority);
+        private MenuEntryAttribute m_MenuInfo;
+        private string m_ShortCut = null;
+
+
+        public static IEnumerable<Type> GetActionsOfType(Type actionType)
+        {
+            var query = TypeCache.GetTypesDerivedFrom(actionType).Where(type => !type.IsGenericType && !type.IsNested && !type.IsAbstract);
+            return query;
+        }
+
+        public static ShortcutAttribute GetShortcutAttributeForAction(MenuItemActionBase action)
+        {
+            var shortcutAttributes = action.GetType()
+                .GetCustomAttributes(typeof(ShortcutAttribute), true)
+                .Cast<ShortcutAttribute>();
+
+            foreach (var shortcutAttribute in shortcutAttributes)
+            {
+                var shortcutOverride = shortcutAttribute as ShortcutPlatformOverrideAttribute;
+                if (shortcutOverride != null)
+                {
+                    if (shortcutOverride.MatchesCurrentPlatform())
+                        return shortcutOverride;
+                }
+                else
+                {
+                    return shortcutAttribute;
+                }
+            }
+
+            return null;
+        }
+
+        public static void BuildMenu(GenericMenu menu, List<MenuActionItem> items)
+        {
+            // sorted the outer menu by priority, then sort the innermenu by priority
+            var sortedItems =
+                items.GroupBy(x => string.IsNullOrEmpty(x.category) ? x.entryName : x.category).
+                    OrderBy(x => x.Min(y => y.priority)).
+                    SelectMany(x => x.OrderBy(z => z.priority));
+
+            int lastPriority = Int32.MinValue;
+            string lastCategory = string.Empty;
+
+            foreach (var s in sortedItems)
+            {
+                if (s.state == MenuActionDisplayState.Hidden)
+                    continue;
+
+                var priority = s.priority;
+                if (lastPriority == Int32.MinValue)
+                {
+                    lastPriority = priority;
+                }
+                else if ((priority / MenuOrder.SeparatorAt) > (lastPriority / MenuOrder.SeparatorAt))
+                {
+                    string path = String.Empty;
+                    if (lastCategory == s.category)
+                        path = s.category;
+                    menu.AddSeparator(path);
+                }
+
+                lastPriority = priority;
+                lastCategory = s.category;
+
+                string entry = s.category + s.entryName;
+                if (!string.IsNullOrEmpty(s.shortCut))
+                    entry += " " + s.shortCut;
+
+                if (s.state == MenuActionDisplayState.Visible && s.isActiveInMode)
+                    menu.AddItem(new GUIContent(entry), s.isChecked, s.callback);
+                else
+                    menu.AddDisabledItem(new GUIContent(entry));
+            }
+        }
+
+        public static ActiveInModeAttribute GetActiveInModeAttribute(MenuItemActionBase action)
+        {
+            var attr = action.GetType().GetCustomAttributes(typeof(ActiveInModeAttribute), true);
+
+            if (attr.Length > 0)
+                return (attr[0] as ActiveInModeAttribute);
+
+            return null;
+        }
+
+        public static bool IsActionActiveInMode(MenuItemActionBase action, TimelineModes mode)
+        {
+            ActiveInModeAttribute attr = GetActiveInModeAttribute(action);
+            return attr != null && (attr.modes & mode) != 0;
+        }
+
+        public int priority
+        {
+            get { return menuInfo.priority; }
+        }
+
+        public string category
+        {
+            get { return menuInfo.subMenuPath; }
+        }
+
+        public string menuName
+        {
+            get
+            {
+                if (string.IsNullOrEmpty(menuInfo.name))
+                    return L10n.Tr(GetType().Name);
+                return menuInfo.name;
+            }
+        }
+
+        // shortcut used by the menu
+        public string shortCut
+        {
+            get
+            {
+                if (m_ShortCut == null)
+                {
+                    var shortcutAttribute = GetShortcutAttributeForAction(this);
+                    m_ShortCut = shortcutAttribute == null ? string.Empty : shortcutAttribute.GetMenuShortcut();
+                }
+                return m_ShortCut;
+            }
+        }
+
+        public bool showInMenu
+        {
+            get { return menuInfo != NoMenu; }
+        }
+
+        private MenuEntryAttribute menuInfo
+        {
+            get
+            {
+                if (m_MenuInfo == null)
+                    m_MenuInfo = GetType().GetCustomAttributes(typeof(MenuEntryAttribute), false).OfType<MenuEntryAttribute>().DefaultIfEmpty(NoMenu).First();
+                return m_MenuInfo;
+            }
+        }
+    }
+}