feat: add methods tab to API documentation

.changeset/smooth-avocados-move.md

@@ -0,0 +1,9 @@
+---
+'@api-viewer/common': patch
+'@api-viewer/docs': patch
+'api-viewer-element': patch
+'@api-viewer/demo': patch
+'@api-viewer/tabs': patch
+---
+
+Add methods tab to API documentation

docs/assets/custom-elements.json

@@ -58,17 +58,6 @@
             }
           ],
           "members": [
-            {
-              "kind": "field",
-              "name": "opened",
-              "type": {
-                "text": "boolean | null | undefined"
-              },
-              "default": "false",
-              "description": "When true, the panel content is expanded and visible",
-              "attribute": "opened",
-              "reflects": true
-            },
             {
               "kind": "field",
               "name": "disabled",
@@ -123,7 +112,8 @@
                 "type": {
                   "text": "void"
                 }
-              }
+              },
+              "privacy": "protected"
             },
             {
               "kind": "method",
@@ -198,6 +188,30 @@
                   "text": "void"
                 }
               }
+            },
+            {
+              "kind": "field",
+              "name": "opened",
+              "type": {
+                "text": "boolean | null | undefined"
+              },
+              "default": "false",
+              "description": "When true, the content is visible.",
+              "attribute": "opened",
+              "reflects": true,
+              "inheritedFrom": {
+                "name": "OpenedMixin",
+                "module": "src/opened-mixin.ts"
+              }
+            },
+            {
+              "kind": "method",
+              "name": "toggle",
+              "description": "Toggle the opened property value.",
+              "inheritedFrom": {
+                "name": "OpenedMixin",
+                "module": "src/opened-mixin.ts"
+              }
             }
           ],
           "events": [
@@ -225,22 +239,32 @@
               "name": "focus-ring"
             },
             {
-              "name": "opened",
+              "name": "disabled",
               "type": {
-                "text": "boolean | null | undefined"
+                "text": "boolean"
               },
               "default": "false",
-              "description": "When true, the panel content is expanded and visible",
-              "fieldName": "opened"
+              "description": "Disabled panel can not be expanded or collapsed",
+              "fieldName": "disabled"
             },
             {
-              "name": "disabled",
+              "name": "opened",
               "type": {
-                "text": "boolean"
+                "text": "boolean | null | undefined"
               },
               "default": "false",
-              "description": "Disabled panel can not be expanded or collapsed",
-              "fieldName": "disabled"
+              "description": "When true, the content is visible.",
+              "fieldName": "opened",
+              "inheritedFrom": {
+                "name": "OpenedMixin",
+                "module": "src/opened-mixin.ts"
+              }
+            }
+          ],
+          "mixins": [
+            {
+              "name": "OpenedMixin",
+              "module": "/src/opened-mixin.js"
             }
           ],
           "superclass": {
@@ -533,6 +557,64 @@
         }
       ]
     },
+    {
+      "kind": "javascript-module",
+      "path": "src/opened-mixin.ts",
+      "declarations": [
+        {
+          "kind": "mixin",
+          "description": "",
+          "name": "OpenedMixin",
+          "members": [
+            {
+              "kind": "field",
+              "name": "opened",
+              "type": {
+                "text": "boolean | null | undefined"
+              },
+              "default": "false",
+              "description": "When true, the content is visible.",
+              "attribute": "opened",
+              "reflects": true
+            },
+            {
+              "kind": "method",
+              "name": "toggle",
+              "description": "Toggle the opened property value."
+            }
+          ],
+          "attributes": [
+            {
+              "name": "opened",
+              "type": {
+                "text": "boolean | null | undefined"
+              },
+              "default": "false",
+              "description": "When true, the content is visible.",
+              "fieldName": "opened"
+            }
+          ],
+          "parameters": [
+            {
+              "name": "base",
+              "type": {
+                "text": "T"
+              }
+            }
+          ]
+        }
+      ],
+      "exports": [
+        {
+          "kind": "js",
+          "name": "OpenedMixin",
+          "declaration": {
+            "name": "OpenedMixin",
+            "module": "src/opened-mixin.ts"
+          }
+        }
+      ]
+    },
     {
       "kind": "javascript-module",
       "path": "src/progress-bar.ts",

fixtures/lit/src/expansion-panel.ts

@@ -3,6 +3,7 @@ import { customElement } from 'lit/decorators/custom-element.js';
 import { property } from 'lit/decorators/property.js';
 import { query } from 'lit/decorators/query.js';
 import { styleMap } from 'lit/directives/style-map.js';
+import { OpenedMixin } from './opened-mixin.js';
 
 /**
  * A custom element similar to the HTML5 `<details>` element.
@@ -26,12 +27,7 @@ import { styleMap } from 'lit/directives/style-map.js';
  * @fires opened-changed - Event fired when expanding / collapsing
  */
 @customElement('expansion-panel')
-export class ExpansionPanel extends LitElement {
-  /**
-   * When true, the panel content is expanded and visible
-   */
-  @property({ type: Boolean, reflect: true }) opened?: boolean | null = false;
-
+export class ExpansionPanel extends OpenedMixin(LitElement) {
   /**
    * Disabled panel can not be expanded or collapsed
    */
@@ -207,6 +203,7 @@ export class ExpansionPanel extends LitElement {
     document.body.removeEventListener('keyup', this._boundBodyKeyup, true);
   }
 
+  /** @protected */
   focus(): void {
     if (this.header) {
       this.header.focus();
@@ -280,13 +277,13 @@ export class ExpansionPanel extends LitElement {
   }
 
   private _onToggleClick(): void {
-    this.opened = !this.opened;
+    this.toggle();
   }
 
   private _onToggleKeyDown(e: KeyboardEvent): void {
     if ([13, 32].indexOf(e.keyCode) > -1) {
       e.preventDefault();
-      this.opened = !this.opened;
+      this.toggle();
     }
   }
 

fixtures/lit/src/opened-mixin.ts

@@ -0,0 +1,32 @@
+import { LitElement } from 'lit';
+import { property } from 'lit/decorators/property.js';
+
+/* eslint-disable @typescript-eslint/no-explicit-any */
+export type Constructor<T = unknown> = new (...args: any[]) => T;
+
+export interface OpenedMixinInterface {
+  opened: boolean | null | undefined;
+
+  toggle(): void;
+}
+
+export const OpenedMixin = <T extends Constructor<LitElement>>(
+  base: T
+): T & Constructor<OpenedMixinInterface> => {
+  class OpenedMixinClass extends base {
+    /**
+     * When true, the content is visible.
+     */
+    @property({ type: Boolean, reflect: true })
+    opened: boolean | null | undefined = false;
+
+    /**
+     * Toggle the opened property value.
+     */
+    toggle() {
+      this.opened = !this.opened;
+    }
+  }
+
+  return OpenedMixinClass;
+};

packages/api-common/src/manifest.ts

@@ -3,6 +3,7 @@ import type {
   ClassField,
   ClassLike,
   ClassMember,
+  ClassMethod,
   CssCustomProperty,
   CssPart,
   CustomElement,
@@ -18,6 +19,7 @@ export {
   Attribute,
   ClassField,
   ClassMember,
+  ClassMethod,
   CssCustomProperty,
   CssPart,
   CustomElement,
@@ -46,8 +48,8 @@ const isCustomElementExport = (y: Export): y is CustomElementExport =>
 const isCustomElementDeclaration = (y: ClassLike): y is CustomElement =>
   (y as CustomElement).customElement;
 
-const isPublicProperty = (x: ClassMember): x is ClassField =>
-  x.kind === 'field' && !(x.privacy === 'private' || x.privacy === 'protected');
+const isPublic = (x: ClassMember): boolean =>
+  !(x.privacy === 'private' || x.privacy === 'protected');
 
 export async function fetchManifest(src: string): Promise<Package | null> {
   try {
@@ -112,5 +114,15 @@ export const getElementData = (
 };
 
 export const getPublicFields = (members: ClassMember[] = []): ClassField[] => {
-  return members.filter(isPublicProperty);
+  return members.filter(
+    (x: ClassMember): x is ClassField => x.kind === 'field' && isPublic(x)
+  );
+};
+
+export const getPublicMethods = (
+  members: ClassMember[] = []
+): ClassMethod[] => {
+  return members.filter(
+    (x: ClassMember): x is ClassMethod => x.kind === 'method' && isPublic(x)
+  );
 };

packages/api-docs/src/base.ts

@@ -6,6 +6,7 @@ import {
   getCustomElements,
   getElementData,
   getPublicFields,
+  getPublicMethods,
   hasCustomElements,
   ManifestMixin,
   Package
@@ -28,6 +29,7 @@ async function renderDocs(
 
   const data = getElementData(manifest, selected) as CustomElement;
   const props = getPublicFields(data.members);
+  const methods = getPublicMethods(data.members);
 
   return html`
     <header part="header">
@@ -54,6 +56,7 @@ async function renderDocs(
       .name=${data.name}
       .props=${props}
       .attrs=${data.attributes ?? []}
+      .methods=${methods}
       .events=${data.events ?? []}
       .slots=${data.slots ?? []}
       .cssParts=${data.cssParts ?? []}

packages/api-docs/src/layout.ts

@@ -3,6 +3,7 @@ import { property } from 'lit/decorators/property.js';
 import {
   Attribute,
   ClassField,
+  ClassMethod,
   CssCustomProperty,
   CssPart,
   Event,
@@ -83,6 +84,9 @@ class ApiDocsLayout extends LitElement {
   @property({ attribute: false })
   attrs: Attribute[] = [];
 
+  @property({ attribute: false })
+  methods: ClassMethod[] = [];
+
   @property({ attribute: false })
   slots: Slot[] = [];
 
@@ -100,11 +104,17 @@ class ApiDocsLayout extends LitElement {
   }
 
   protected render(): TemplateResult {
-    const { slots, props, attrs, events, cssParts, cssProps } = this;
-
-    const emptyDocs = [props, attrs, slots, events, cssProps, cssParts].every(
-      (arr) => arr.length === 0
-    );
+    const { slots, props, attrs, methods, events, cssParts, cssProps } = this;
+
+    const emptyDocs = [
+      props,
+      attrs,
+      methods,
+      slots,
+      events,
+      cssProps,
+      cssParts
+    ].every((arr) => arr.length === 0);
 
     const attributes = (attrs || []).filter(
       (x) => !props.some((y) => y.name === x.fieldName)
@@ -148,6 +158,15 @@ class ApiDocsLayout extends LitElement {
                 )}
               `
             )}
+            ${renderTab(
+              'Methods',
+              methods,
+              html`
+                ${methods.map(({ name, description }) =>
+                  renderItem('method', `${name}()`, description)
+                )}
+              `
+            )}
             ${renderTab(
               'Slots',
               slots,