allow light dom editor to be slotted (#143)

* allow light dom editor to be slotted.

* uncomment some thing

* add the ability to slot in a light dom editor

* add the ability to slot in a light dom editor

* add the ability to slot in a light dom editor

* working on tests

* working on tests

* fix test suite

* fix test suite

* prettier

.changeset/late-zebras-march.md

@@ -0,0 +1,5 @@
+---
+"rhino-editor": patch
+---
+
+fix: link-dialog buttons now have proper hover / focus state.

.changeset/serious-avocados-act.md

@@ -0,0 +1,5 @@
+---
+"rhino-editor": minor
+---
+
+BREAKING_CHANGE: Allow the light-dom editor to be slotted. Do note, this change may result in a small breaking change for the users relying on the original light-dom structure being `div > div.trix-content`. Most users should not see a difference.

docs/frontend/styles/_normalize.css

@@ -1,7 +1,7 @@
 html {
   box-sizing: border-box;
   height: 100%;
-  font-size: 18px;
+  font-size: 16px;
   /* letter-spacing: 0.025em; */
 }
 

docs/frontend/styles/components/_top_nav.css

@@ -20,6 +20,8 @@
 
 .top-nav__hamburger__button {
   font-size: 1.75em;
+  display: flex;
+  align-items: center;
 }
 
 .top-nav__hamburger__button::part(base),

docs/src/_documentation/how_tos/13-add-additional-attributes-onto-the-editor.md

@@ -0,0 +1,37 @@
+---
+title: Add Additional Attributes onto the Editor
+permalink: /add-additional-attributes-onto-the-editor/
+---
+
+Sometimes you may want to add additional attributes directly onto the `contenteditable` of RhinoEditor.
+
+The easiest way to do this is by slotting in an editor with the attributes you would like. Here's an example of how we
+could add `aria-*` attributes onto the editor in cases where perhaps the form failed validation.
+
+```erb
+<rhino-editor>
+  <!-- This will get replaced by a new <div>, but will have the attributes copied. -->
+  <div slot="editor" aria-invalid="<%%= object.errors.any? %>" aria-describedby="description-errors">
+  </div>
+</rhino-editor>
+
+<div id="description-errors">
+  <%% if object.errors.any? %>
+    <%%= object.errors.to_s %>
+  <%% end %>
+</div>
+```
+
+This will produce something like the following:
+
+```html
+<rhino-editor>
+  <!-- This will get replaced by a new <div>, but will have the attributes copied. -->
+  <div slot="editor" aria-invalid="true" aria-describedby="description-errors">
+  </div>
+</rhino-editor>
+
+<div id="description-errors">
+  Wow dude. You really messed up. What did you even submit?
+</div>
+```

src/exports/elements/tip-tap-editor-base.ts

@@ -121,33 +121,68 @@ export class TipTapEditorBase extends BaseElement {
    */
   extensions: EditorOptions["extensions"] = [];
 
+  /**
+   * @internal
+   */
+  __initialAttributes: Record<string, string> = {};
+
+  /**
+   * @internal
+   */
+  __hasRendered: boolean = false;
+
+  __getInitialAttributes() {
+    if (this.__hasRendered) return;
+
+    const slottedEditor = this.slottedEditor;
+    if (slottedEditor) {
+      this.__initialAttributes = {};
+      [...slottedEditor.attributes].forEach((attr) => {
+        const { nodeName, nodeValue } = attr;
+        if (nodeName && nodeValue != null) {
+          this.__initialAttributes[nodeName] = nodeValue;
+        }
+      });
+    }
+
+    this.__hasRendered = true;
+  }
+
   /**
    * Reset mechanism. This is called on first connect, and called anytime extensions,
    * or editor options get modified to make sure we have a fresh instance.
    */
   rebuildEditor() {
+    const editors = this.querySelectorAll("[slot='editor']");
+
+    this.__getInitialAttributes();
+
     // Make sure we dont render the editor more than once.
     if (this.editor) this.editor.destroy();
-    const editors = this.querySelectorAll("[slot='editor']");
+
     editors.forEach((el) => {
       // @ts-expect-error
-      el.querySelector(".tiptap")?.editor?.destroy();
+      el.editor?.destroy();
       el.remove();
     });
 
-    // light-dom version.
-    const div = document.createElement("div");
-    div.setAttribute("slot", "editor");
+    this.editor = this.__setupEditor(this);
 
-    //  This may seem strange, but for some reason its the only wayto get the DropCursor working correctly.
-    div.style.position = "relative";
-    this.insertAdjacentElement("beforeend", div);
+    this.__bindEditorListeners();
 
-    this.editor = this.__setupEditor(div);
+    this.editorElement = this.querySelector(".ProseMirror");
 
-    this.__bindEditorListeners();
-    this.editorElement = div.querySelector(".ProseMirror");
-    //
+    Object.entries(this.__initialAttributes)?.forEach(
+      ([attrName, attrValue]) => {
+        if (attrName === "class") {
+          this.editorElement?.classList.add(...attrValue.split(" "));
+          return;
+        }
+        this.editorElement?.setAttribute(attrName, attrValue);
+      },
+    );
+
+    this.editorElement?.setAttribute("slot", "editor");
     this.editorElement?.classList.add("trix-content");
     this.editorElement?.setAttribute("tabindex", "0");
     this.editorElement?.setAttribute("role", "textbox");
@@ -157,9 +192,7 @@ export class TipTapEditorBase extends BaseElement {
   }
 
   protected willUpdate(
-    changedProperties:
-      | PropertyValueMap<this & { class: string }>
-      | Map<PropertyKey, unknown>,
+    changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>,
   ): void {
     if (changedProperties.has("class")) {
       this.classList.add("rhino-editor");
@@ -175,6 +208,10 @@ export class TipTapEditorBase extends BaseElement {
   protected updated(
     changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>,
   ): void {
+    if (changedProperties.has("readonly")) {
+      this.editor?.setEditable(!this.readonly);
+    }
+
     if (
       changedProperties.has("extensions") ||
       changedProperties.has("starterKitOptions") ||
@@ -183,10 +220,6 @@ export class TipTapEditorBase extends BaseElement {
       this.rebuildEditor();
     }
 
-    if (changedProperties.has("readonly")) {
-      this.editor?.setEditable(!this.readonly);
-    }
-
     super.updated(changedProperties);
   }
 
@@ -614,7 +647,7 @@ export class TipTapEditorBase extends BaseElement {
     this.editor.off("blur", this.__handleBlur);
   }
 
-  private __setupEditor(element: Element): Editor {
+  private __setupEditor(element: Element = this): Editor {
     if (!this.serializer || this.serializer === "html") {
       // This is a super hacky way to get __to_trix_html to support figcaptions without patching it.
       this.normalizeDOM(this.inputElement);

src/exports/elements/tip-tap-editor.ts

@@ -1109,14 +1109,14 @@ export class TipTapEditor extends TipTapEditorBase {
         />
         <div class="link-dialog__buttons" part="link-dialog__buttons">
           <button
-            class="link-dialog__button"
+            class="rhino-toolbar-button link-dialog__button"
             part="link-dialog__button link-dialog__button--link"
             @click=${this.addLink}
           >
             ${this.translations.linkDialogLink}
           </button>
           <button
-            class="link-dialog__button"
+            class="rhino-toolbar-button link-dialog__button"
             part="link-dialog__button link-dialog__button--unlink"
             @click=${() => {
               this.editor

src/exports/styles/editor.js

@@ -130,7 +130,7 @@ export default css`
     border-bottom-left-radius: 0px;
   }
 
-  .toolbar::part(base):is(:focus-within) {
+  .toolbar::part(base):is(:focus-visible, :focus-within) {
     border-color: var(--rhino-button-active-border-color);
     outline: transparent;
   }
@@ -177,7 +177,6 @@ export default css`
 
   .link-dialog__input:is(:focus) {
     outline: transparent;
-    box-shadow: var(--rhino-focus-ring);
     border-color: var(--rhino-button-active-border-color);
   }
 
@@ -188,7 +187,7 @@ export default css`
     box-shadow: none;
   }
 
-  .link-dialog__button {
+  .rhino-toolbar-button.link-dialog__button {
     padding: 0.4em 0.6em;
     border: 1px solid var(--rhino-button-border-color);
     border-radius: var(--rhino-border-radius);

tests/rails/app/views/posts/_form.html.erb

@@ -36,6 +36,8 @@
         <%# <button slot="toolbar-end" tabindex="-1" type="button" data-role="toolbar-item">Embed</button> %>
         <%# <button slot="toolbar-end" tabindex="-1" type="button" data-role="toolbar-item">EmbedTwo</button> %>
         <button slot="before-undo-button" tabindex="-1" type="button" data-role="toolbar-item" data-controller="embed">Embed</button>
+
+        <div slot="editor" aria-invalid="true" class="my-class"></div>
       </rhino-editor>
     </section>
 

tests/unit/light-dom-render.test.js

@@ -0,0 +1,27 @@
+// @ts-check
+import "rhino-editor"
+import { fixture, assert, aTimeout } from "@open-wc/testing"
+import { html } from "lit"
+
+test("Should only render a textbox once", async () => {
+  const rhinoEditor = await fixture(html`<rhino-editor>
+    <div slot="editor" aria-describedby="errors" aria-invalid="true" class="my-class"></div>
+  </rhino-editor>`)
+
+  await aTimeout(100)
+
+  assert.equal(rhinoEditor.querySelectorAll("[role='textbox']").length, 1)
+
+  const editor = rhinoEditor.querySelector(".trix-content")
+
+  // The attributes we put on the editor should not get overwritten when the rendering process happens.
+  assert.equal(editor?.getAttribute("aria-describedby"), "errors")
+  assert.equal(editor?.getAttribute("aria-invalid"), "true")
+
+  // Make sure classes don't get overwritten
+  assert(editor?.classList.contains("my-class"))
+  assert(editor?.classList.contains("trix-content"))
+  console.log(editor.outerHTML)
+  assert(editor?.classList.contains("tiptap"))
+})
+

tests/unit/serializer.test.js

@@ -10,11 +10,13 @@ test("It should properly update the input element when the serializer changes",
     <rhino-editor input="input"></rhino-editor>
   </div>`)
 
+  await aTimeout(0)
+
   const rhinoEditor = div.querySelector("rhino-editor")
   const input = div.querySelector("input")
 
   assert.equal(rhinoEditor.serializer, "html")
-  assert.equal(input.value, "<p></p>")
+  assert.equal(input.value, "")
 
   rhinoEditor.serializer = "json"