Implement a way for users to be able to add buttons to the details panel (#372)

* Implement actions

* Add action button styles

* Add docs for actions

theatre/core/src/sheetObjects/SheetObjectTemplate.ts

@@ -1,7 +1,11 @@
 import type Project from '@theatre/core/projects/Project'
 import type Sheet from '@theatre/core/sheets/Sheet'
 import type SheetTemplate from '@theatre/core/sheets/SheetTemplate'
-import type {SheetObjectPropTypeConfig} from '@theatre/core/sheets/TheatreSheet'
+import type {
+  SheetObjectAction,
+  SheetObjectActionsConfig,
+  SheetObjectPropTypeConfig,
+} from '@theatre/core/sheets/TheatreSheet'
 import {emptyArray} from '@theatre/shared/utils'
 import type {
   PathToProp,
@@ -58,6 +62,7 @@ export default class SheetObjectTemplate {
   readonly address: WithoutSheetInstance<SheetObjectAddress>
   readonly type: 'Theatre_SheetObjectTemplate' = 'Theatre_SheetObjectTemplate'
   protected _config: Atom<SheetObjectPropTypeConfig>
+  readonly _actions: Atom<SheetObjectActionsConfig>
   readonly _cache = new SimpleCache()
   readonly project: Project
 
@@ -69,14 +74,24 @@ export default class SheetObjectTemplate {
     return this._config.pointer
   }
 
+  get staticActions() {
+    return this._actions.getState()
+  }
+
+  get actionsPointer() {
+    return this._actions.pointer
+  }
+
   constructor(
     readonly sheetTemplate: SheetTemplate,
     objectKey: ObjectAddressKey,
     nativeObject: unknown,
     config: SheetObjectPropTypeConfig,
+    actions: SheetObjectActionsConfig,
   ) {
     this.address = {...sheetTemplate.address, objectKey}
     this._config = new Atom(config)
+    this._actions = new Atom(actions)
     this.project = sheetTemplate.project
   }
 
@@ -93,6 +108,10 @@ export default class SheetObjectTemplate {
     this._config.setState(config)
   }
 
+  registerAction(name: string, action: SheetObjectAction) {
+    this._actions.setIn([name], action)
+  }
+
   /**
    * Returns the default values (all defaults are read from the config)
    */

theatre/core/src/sheets/Sheet.ts

@@ -1,7 +1,10 @@
 import type Project from '@theatre/core/projects/Project'
 import Sequence from '@theatre/core/sequences/Sequence'
 import type SheetObject from '@theatre/core/sheetObjects/SheetObject'
-import type {SheetObjectPropTypeConfig} from '@theatre/core/sheets/TheatreSheet'
+import type {
+  SheetObjectActionsConfig,
+  SheetObjectPropTypeConfig,
+} from '@theatre/core/sheets/TheatreSheet'
 import TheatreSheet from '@theatre/core/sheets/TheatreSheet'
 import type {SheetAddress} from '@theatre/shared/utils/addresses'
 import {Atom, valueDerivation} from '@theatre/dataverse'
@@ -55,11 +58,13 @@ export default class Sheet {
     objectKey: ObjectAddressKey,
     nativeObject: ObjectNativeObject,
     config: SheetObjectPropTypeConfig,
+    actions: SheetObjectActionsConfig = {},
   ): SheetObject {
     const objTemplate = this.template.getObjectTemplate(
       objectKey,
       nativeObject,
       config,
+      actions,
     )
 
     const object = objTemplate.createInstance(this, nativeObject, config)

theatre/core/src/sheets/SheetTemplate.ts

@@ -8,7 +8,10 @@ import {Atom} from '@theatre/dataverse'
 import type {Pointer} from '@theatre/dataverse'
 import Sheet from './Sheet'
 import type {ObjectNativeObject} from './Sheet'
-import type {SheetObjectPropTypeConfig} from './TheatreSheet'
+import type {
+  SheetObjectActionsConfig,
+  SheetObjectPropTypeConfig,
+} from './TheatreSheet'
 import type {
   ObjectAddressKey,
   SheetId,
@@ -50,11 +53,18 @@ export default class SheetTemplate {
     objectKey: ObjectAddressKey,
     nativeObject: ObjectNativeObject,
     config: SheetObjectPropTypeConfig,
+    actions: SheetObjectActionsConfig,
   ): SheetObjectTemplate {
     let template = this._objectTemplates.getState()[objectKey]
 
     if (!template) {
-      template = new SheetObjectTemplate(this, objectKey, nativeObject, config)
+      template = new SheetObjectTemplate(
+        this,
+        objectKey,
+        nativeObject,
+        config,
+        actions,
+      )
       this._objectTemplates.setIn([objectKey], template)
     }
 

theatre/core/src/sheets/TheatreSheet.ts

@@ -19,10 +19,15 @@ import type {
 import type SheetObject from '@theatre/core/sheetObjects/SheetObject'
 import type {ObjectAddressKey} from '@theatre/shared/utils/ids'
 import {notify} from '@theatre/shared/notify'
+import type {IStudio} from '@theatre/studio'
 
 export type SheetObjectPropTypeConfig =
   PropTypeConfig_Compound<UnknownValidCompoundProps>
 
+export type SheetObjectAction = (object: ISheetObject, studio: IStudio) => void
+
+export type SheetObjectActionsConfig = Record<string, SheetObjectAction>
+
 export interface ISheet {
   /**
    * All sheets have `sheet.type === 'Theatre_Sheet_PublicAPI'`
@@ -46,7 +51,7 @@ export interface ISheet {
    *
    * @param key - Each object is identified by a key, which is a non-empty string
    * @param props - The props of the object. See examples
-   * @param options - (Optional) Provide `{reconfigure: true}` to reconfigure an existing object. Reac the example below for details.
+   * @param options - (Optional) Provide `{reconfigure: true}` to reconfigure an existing object, or `{actions: { ... }}` to add custom buttons to the UI. Read the example below for details.
    *
    * @returns An Object
    *
@@ -75,6 +80,18 @@ export interface ISheet {
    * console.log(object.value.bar) // prints 0, since we've introduced this prop by reconfiguring the object
    *
    * assert(obj === obj2) // passes, because reconfiguring the object returns the same object
+   *
+   * // you can add custom actions to an object:
+   * const obj = sheet.object("obj", {foo: 0}, {
+   *   actions: {
+   *     // This will display a button in the UI that will reset the value of `foo` to 0
+   *     Reset: () => {
+   *       studio.transaction((api) => {
+   *         api.set(obj.props.foo, 0)
+   *       })
+   *     }
+   *   }
+   * })
    * ```
    */
   object<Props extends UnknownShorthandCompoundProps>(
@@ -82,6 +99,7 @@ export interface ISheet {
     props: Props,
     options?: {
       reconfigure?: boolean
+      actions?: SheetObjectActionsConfig
     },
   ): ISheetObject<Props>
 
@@ -120,7 +138,7 @@ export default class TheatreSheet implements ISheet {
   object<Props extends UnknownShorthandCompoundProps>(
     key: string,
     config: Props,
-    opts?: {reconfigure?: boolean},
+    opts?: {reconfigure?: boolean; actions?: SheetObjectActionsConfig},
   ): ISheetObject<Props> {
     const internal = privateAPI(this)
     const sanitizedPath = validateAndSanitiseSlashedPathOrThrow(
@@ -161,6 +179,13 @@ export default class TheatreSheet implements ISheet {
         }
       }
 
+      if (opts?.actions) {
+        Object.entries(opts.actions).forEach(([key, action]) => {
+          existingObject.template.registerAction(key, action)
+        })
+        console.log('registered actions', opts.actions)
+      }
+
       return existingObject.publicApi as $IntentionalAny
     } else {
       const sanitizedConfig = compound(config)
@@ -168,6 +193,7 @@ export default class TheatreSheet implements ISheet {
         sanitizedPath as ObjectAddressKey,
         nativeObject,
         sanitizedConfig,
+        opts?.actions,
       )
       if (process.env.NODE_ENV !== 'production') {
         weakMapOfUnsanitizedProps.set(object as $FixMe, config)

theatre/studio/src/panels/DetailPanel/ObjectDetails.tsx

@@ -5,6 +5,37 @@ import type {$FixMe} from '@theatre/shared/utils/types'
 import DeterminePropEditorForDetail from './DeterminePropEditorForDetail'
 import {useVal} from '@theatre/react'
 import uniqueKeyForAnyObject from '@theatre/shared/utils/uniqueKeyForAnyObject'
+import getStudio from '@theatre/studio/getStudio'
+import styled from 'styled-components'
+
+const ActionButtonContainer = styled.div`
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  padding: 8px;
+`
+
+const ActionButton = styled.button`
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  outline: none;
+  border-radius: 2px;
+
+  color: #a8a8a9;
+  background: rgba(255, 255, 255, 0.1);
+
+  border: none;
+  height: 28px;
+
+  &:hover {
+    background: rgba(255, 255, 255, 0.15);
+  }
+
+  &:active {
+    background: rgba(255, 255, 255, 0.2);
+  }
+`
 
 const ObjectDetails: React.FC<{
   /** TODO: add support for multiple objects (it would show their common props) */
@@ -12,17 +43,37 @@ const ObjectDetails: React.FC<{
 }> = ({objects}) => {
   const obj = objects[0]
   const config = useVal(obj.template.configPointer)
+  const actions = useVal(obj.template.actionsPointer)
+
+  console.log(actions)
 
   return (
-    <DeterminePropEditorForDetail
-      // we don't use the object's address as the key because if a user calls `sheet.detachObject(key)` and later
-      // calls `sheet.object(key)` with the same key, we want to re-render the object details panel.
-      key={uniqueKeyForAnyObject(obj)}
-      obj={obj}
-      pointerToProp={obj.propsP as Pointer<$FixMe>}
-      propConfig={config}
-      visualIndentation={1}
-    />
+    <>
+      <DeterminePropEditorForDetail
+        // we don't use the object's address as the key because if a user calls `sheet.detachObject(key)` and later
+        // calls `sheet.object(key)` with the same key, we want to re-render the object details panel.
+        key={uniqueKeyForAnyObject(obj)}
+        obj={obj}
+        pointerToProp={obj.propsP as Pointer<$FixMe>}
+        propConfig={config}
+        visualIndentation={1}
+      />
+      <ActionButtonContainer>
+        {actions &&
+          Object.entries(actions).map(([actionName, action]) => {
+            return (
+              <ActionButton
+                key={actionName}
+                onClick={() => {
+                  action(obj.publicApi, getStudio().publicApi)
+                }}
+              >
+                {actionName}
+              </ActionButton>
+            )
+          })}
+      </ActionButtonContainer>
+    </>
   )
 }