NEW: add maps, actions and bindings via '+' button (ISX-1040)

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Commands/Commands.cs

@@ -21,6 +21,43 @@ public static Command SelectActionMap(string actionMapName)
             return (in InputActionsEditorState state) => state.SelectActionMap(actionMapName);
         }
 
+        public static Command AddActionMap()
+        {
+            return (in InputActionsEditorState state) =>
+            {
+                var newMap = InputActionSerializationHelpers.AddActionMap(state.serializedObject);
+                var actionProperty = InputActionSerializationHelpers.AddAction(newMap);
+                InputActionSerializationHelpers.AddBinding(actionProperty, newMap);
+                state.serializedObject.ApplyModifiedProperties();
+                return state.SelectActionMap(newMap);
+            };
+        }
+
+        public static Command AddAction()
+        {
+            return (in InputActionsEditorState state) =>
+            {
+                var actionMap = Selectors.GetSelectedActionMap(state).wrappedProperty;
+                var newAction = InputActionSerializationHelpers.AddAction(actionMap);
+                InputActionSerializationHelpers.AddBinding(newAction, actionMap);
+                state.serializedObject.ApplyModifiedProperties();
+                return state.SelectAction(newAction);
+            };
+        }
+
+        public static Command AddBinding()
+        {
+            return (in InputActionsEditorState state) =>
+            {
+                var action = Selectors.GetSelectedAction(state).wrappedProperty;
+                var map = Selectors.GetSelectedActionMap(state).wrappedProperty;
+                var binding = InputActionSerializationHelpers.AddBinding(action, map);
+                var bindingIndex = new SerializedInputBinding(binding).indexOfBinding;
+                state.serializedObject.ApplyModifiedProperties();
+                return state.With(selectedBindingIndex: bindingIndex, selectionType: SelectionType.Binding);
+            };
+        }
+
         public static Command ExpandCompositeBinding(SerializedInputBinding binding)
         {
             return (in InputActionsEditorState state) => state.ExpandCompositeBinding(binding);

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/InputActionsEditorState.cs

@@ -152,6 +152,18 @@ public InputActionsEditorState SelectAction(string actionName)
             throw new InvalidOperationException($"Couldn't find an action map with name '{actionName}'.");
         }
 
+        public InputActionsEditorState SelectAction(SerializedProperty state)
+        {
+            var index = state.GetIndexOfArrayElement();
+            return With(selectedActionIndex: index, selectionType: SelectionType.Action);
+        }
+
+        public InputActionsEditorState SelectActionMap(SerializedProperty state)
+        {
+            var index = state.GetIndexOfArrayElement();
+            return With(selectedBindingIndex: 0, selectedActionMapIndex: index, selectedActionIndex: 0);
+        }
+
         public InputActionsEditorState SelectActionMap(string actionMapName)
         {
             var actionMap = GetActionMapByName(actionMapName);
@@ -160,6 +172,11 @@ public InputActionsEditorState SelectActionMap(string actionMapName)
                 selectedActionIndex: 0);
         }
 
+        public InputActionsEditorState SelectBinding(int index)
+        {
+            return With(selectedBindingIndex: index);
+        }
+
         public ReadOnlyCollection<int> GetOrCreateExpandedState()
         {
             return new ReadOnlyCollection<int>(GetOrCreateExpandedStateInternal().ToList());

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Resources/InputActionsEditor.uxml

@@ -32,8 +32,9 @@
             </ui:VisualElement>
             <ui:TwoPaneSplitView name="actions-and-properties-split-view" fixed-pane-index="1" fixed-pane-initial-dimension="400" style="height: auto;">
                 <ui:VisualElement name="actions-container" class="body-panel-container">
-                    <ui:VisualElement name="header" class="body-panel-header">
+                    <ui:VisualElement name="header" class="body-panel-header" style="justify-content: space-between;">
                         <ui:Label text="Actions" display-tooltip-when-elided="true" name="actions-label" />
+                        <ui:Button text="+" display-tooltip-when-elided="true" name="add-new-action-button" style="align-items: auto;" />
                     </ui:VisualElement>
                     <ui:VisualElement name="body">
                         <ui:TreeView view-data-key="unity-tree-view" focusable="true" name="actions-tree-view" show-border="false" reorderable="true" show-alternating-row-backgrounds="None" fixed-item-height="20" />

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Resources/InputActionsEditorStyles.uss

@@ -29,6 +29,11 @@
     border-width: 0;
 }
 
+#add-new-action-button {
+    background-color: transparent;
+    border-width: 0;
+}
+
 #bindings-container {
     min-width: 225px;
     border-left-width: 0;

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Resources/InputActionsTreeViewItem.uxml

@@ -1,10 +1,11 @@
 <ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" xsi="http://www.w3.org/2001/XMLSchema-instance" engine="UnityEngine.UIElements" editor="UnityEditor.UIElements" noNamespaceSchemaLocation="../../../../../../UIElementsSchema/UIElements.xsd" editor-extension-mode="False">
     <Style src="project://database/Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Resources/InputActionsEditorStyles.uss?fileID=7433441132597879392&amp;guid=7dac9c49a90bca4499371d0adc9b617b&amp;type=3#InputActionsEditorStyles" />
-    <ui:VisualElement name="item-row" class="unity-list-view__item" style="flex-direction: row; flex-grow: 1; justify-content: flex-start; margin-left: 4px; flex-shrink: 0;">
+    <ui:VisualElement name="item-row" class="unity-list-view__item" style="flex-direction: row; flex-grow: 1; justify-content: space-between; margin-left: 4px; flex-shrink: 0;">
         <ui:VisualElement name="row" style="flex-direction: row; border-left-width: 0; border-left-color: rgb(89, 89, 89); justify-content: flex-start; align-items: center;">
             <ui:VisualElement name="icon" style="justify-content: center; background-image: url(&apos;project://database/Packages/com.unity.inputsystem/InputSystem/Editor/Icons/d_InputControl.png?fileID=2800000&amp;guid=399cd90f4e31041e692a7d3a8b1aa4d0&amp;type=3#d_InputControl&apos;); width: 16px; height: 16px;" />
             <ui:TextField picking-mode="Ignore" name="rename-text-field" is-delayed="true" focusable="true" class="unity-input-actions-editor-hidden" style="visibility: visible; flex-shrink: 1;" />
             <ui:Label text="binding-name" display-tooltip-when-elided="true" name="name" style="flex-grow: 1; justify-content: center; align-items: stretch; margin-left: 4px; -unity-font-style: normal;" />
         </ui:VisualElement>
+        <ui:Button text="+" display-tooltip-when-elided="true" enable-rich-text="false" name="add-new-binding-button" style="opacity: 1; background-color: rgba(255, 255, 255, 0); border-left-color: rgba(255, 255, 255, 0); border-right-color: rgba(255, 255, 255, 0); border-top-color: rgba(255, 255, 255, 0); border-bottom-color: rgba(255, 255, 255, 0); display: none; align-items: flex-end; align-self: auto; flex-direction: row-reverse;" />
     </ui:VisualElement>
 </ui:UXML>

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionMapsView.cs

@@ -1,6 +1,7 @@
 #if UNITY_EDITOR && UNITY_2022_1_OR_NEWER
 using System.Collections.Generic;
 using System.Linq;
+using UnityEngine.InputSystem.Utilities;
 using UnityEngine.UIElements;
 
 namespace UnityEngine.InputSystem.Editor
@@ -33,25 +34,23 @@ public ActionMapsView(VisualElement root, StateContainer stateContainer)
 
             CreateSelector(s => new ViewStateCollection<string>(Selectors.GetActionMapNames(s)),
                 (actionMapNames, state) => new ViewState(Selectors.GetSelectedActionMap(state), actionMapNames));
+
+            addActionMapButton.clicked += AddActionMap;
         }
 
         private Button addActionMapButton => m_Root?.Q<Button>("add-new-action-map-button");
 
         public override void RedrawUI(ViewState viewState)
         {
-            m_ListView.bindItem = (element, i) =>
-            {
-                var treeViewItem = (InputActionsTreeViewItem)element;
-                treeViewItem.label.text = (string)m_ListView.itemsSource[i];
-            };
-            m_ListView.makeItem = () => new InputActionsTreeViewItem();
             m_ListView.itemsSource = viewState.actionMapNames?.ToList() ?? new List<string>();
-            addActionMapButton.clicked += ShowAddActionMapWindow;
+            var indexOf = viewState.actionMapNames.IndexOf(viewState.selectedActionMap.name);
+            m_ListView.SetSelection(indexOf);
+            m_ListView.Rebuild();
         }
 
         public override void DestroyView()
         {
-            addActionMapButton.clicked -= ShowAddActionMapWindow;
+            addActionMapButton.clicked -= AddActionMap;
         }
 
         private void ChangeActionMapName(string newName)
@@ -64,8 +63,9 @@ private void SelectActionMap()
             Dispatch(Commands.SelectActionMap((string)m_ListView.selectedItem));
         }
 
-        private void ShowAddActionMapWindow()
+        private void AddActionMap()
         {
+            Dispatch(Commands.AddActionMap());
         }
 
         private readonly VisualElement m_Root;

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/ActionsTreeView.cs

@@ -17,6 +17,7 @@ internal class ActionsTreeView : ViewBase<ActionsTreeView.ViewState>
     {
         private readonly VisualElement m_Root;
         private readonly TreeView m_ActionsTreeView;
+        private Button addActionButton => m_Root?.Q<Button>("add-new-action-button");
 
         public ActionsTreeView(VisualElement root, StateContainer stateContainer)
             : base(stateContainer)
@@ -31,6 +32,14 @@ public ActionsTreeView(VisualElement root, StateContainer stateContainer)
                 var item = m_ActionsTreeView.GetItemDataForIndex<ActionOrBindingData>(i);
 
                 e.Q<Label>("name").text = item.name;
+                var addBindingButton = e.Q<Button>("add-new-binding-button");
+                if (item.isAction)
+                {
+                    addBindingButton.style.display = DisplayStyle.Flex;
+                    addBindingButton.clicked += () => AddBinding(item.name);
+                }
+                else
+                    addBindingButton.style.display = DisplayStyle.None;
 
                 if (!string.IsNullOrEmpty(item.controlLayout))
                     e.Q<VisualElement>("icon").style.backgroundImage =
@@ -49,19 +58,69 @@ public ActionsTreeView(VisualElement root, StateContainer stateContainer)
             };
 
             CreateSelector(Selectors.GetActionsForSelectedActionMap,
-                (_, state) => new ViewState {treeViewData = Selectors.GetActionsAsTreeViewData(state)});
+                (_, state) =>
+                {
+                    var treeData = Selectors.GetActionsAsTreeViewData(state);
+                    return new ViewState
+                    {
+                        treeViewData = treeData,
+                        newElementID = state.selectionType == SelectionType.Action ? treeData[state.selectedActionIndex].id : GetComponentOrBindingID(treeData, state.selectedBindingIndex)
+                    };
+                });
+
+            addActionButton.clicked += AddAction;
+        }
+
+        private int GetComponentOrBindingID(List<TreeViewItemData<ActionOrBindingData>> treeList, int selectedBindingIndex)
+        {
+            var currentBindingIndex = -1;
+            foreach (var action in treeList)
+            {
+                foreach (var bindingOrComponent in action.children)
+                {
+                    currentBindingIndex++;
+                    if (currentBindingIndex == selectedBindingIndex) return bindingOrComponent.id;
+                    if (bindingOrComponent.hasChildren)
+                    {
+                        foreach (var binding in bindingOrComponent.children)
+                        {
+                            currentBindingIndex++;
+                            if (currentBindingIndex == selectedBindingIndex) return binding.id;
+                        }
+                    }
+                }
+            }
+            return -1;
+        }
+
+        public override void DestroyView()
+        {
+            addActionButton.clicked -= AddAction;
         }
 
         public override void RedrawUI(ViewState viewState)
         {
             m_ActionsTreeView.Clear();
             m_ActionsTreeView.SetRootItems(viewState.treeViewData);
+            m_ActionsTreeView.SetSelectionById(viewState.newElementID);
             m_ActionsTreeView.Rebuild();
         }
 
+        private void AddAction()
+        {
+            Dispatch(Commands.AddAction());
+        }
+
+        private void AddBinding(string actionName)
+        {
+            Dispatch(Commands.SelectAction(actionName));
+            Dispatch(Commands.AddBinding());
+        }
+
         internal class ViewState
         {
             public List<TreeViewItemData<ActionOrBindingData>> treeViewData;
+            public int newElementID;
         }
     }
 
@@ -134,7 +193,7 @@ public static List<TreeViewItemData<ActionOrBindingData>> GetActionsAsTreeViewDa
                         i--;
                         bindingItems.Add(new TreeViewItemData<ActionOrBindingData>(id++,
                             new ActionOrBindingData(false, serializedInputBinding.name, action.expectedControlType, serializedInputBinding.indexOfBinding),
-                            compositeItems));
+                            compositeItems.Count > 0 ? compositeItems : null));
                     }
                     else
                     {
@@ -143,9 +202,8 @@ public static List<TreeViewItemData<ActionOrBindingData>> GetActionsAsTreeViewDa
                                 GetControlLayout(serializedInputBinding.path), serializedInputBinding.indexOfBinding)));
                     }
                 }
-
                 actionItems.Add(new TreeViewItemData<ActionOrBindingData>(id++,
-                    new ActionOrBindingData(true, action.name, action.expectedControlType), bindingItems));
+                    new ActionOrBindingData(true, action.name, action.expectedControlType), bindingItems.Count > 0 ? bindingItems : null));
             }
             return actionItems;
         }