From cbf72c0f0566c9172e8932d0aa0fc6d77bc590aa Mon Sep 17 00:00:00 2001
From: Henrik Giesel <hengiesel@gmail.com>
Date: Thu, 8 Apr 2021 22:11:50 +0200
Subject: [PATCH] Make buttons and button groups easily toggleable through
 hidden web component

---
 ts/editor-toolbar/BUILD.bazel        |   3 +-
 ts/editor-toolbar/ButtonGroup.svelte |  20 ++++--
 ts/editor-toolbar/format.ts          |   2 +-
 ts/editor-toolbar/index.ts           | 101 +++++++++++++++++++++++++++
 ts/editor-toolbar/template.ts        |   1 +
 5 files changed, 121 insertions(+), 6 deletions(-)

diff --git a/ts/editor-toolbar/BUILD.bazel b/ts/editor-toolbar/BUILD.bazel
index cc85ac419..e0c48b00e 100644
--- a/ts/editor-toolbar/BUILD.bazel
+++ b/ts/editor-toolbar/BUILD.bazel
@@ -28,6 +28,7 @@ ts_library(
         "EditorToolbar",
         "lib",
         "//ts/lib",
+        "//ts/sveltelib",
         "@npm//svelte",
         "@npm//svelte2tsx",
     ],
@@ -40,9 +41,9 @@ ts_library(
         exclude = ["index.ts"],
     ),
     deps = [
-        "//ts/sveltelib",
         "//ts/lib",
         "//ts/lib:backend_proto",
+        "//ts/sveltelib",
         "//ts:image_module_support",
         "@npm//svelte",
     ],
diff --git a/ts/editor-toolbar/ButtonGroup.svelte b/ts/editor-toolbar/ButtonGroup.svelte
index a73e2dacc..23c0d0179 100644
--- a/ts/editor-toolbar/ButtonGroup.svelte
+++ b/ts/editor-toolbar/ButtonGroup.svelte
@@ -1,10 +1,20 @@
 <script lang="typescript">
     import type { DynamicSvelteComponent } from "sveltelib/dynamicComponent";
 
+    interface Hidden {
+        hidden: boolean;
+    }
+
     export let id;
     export let className = "";
+    export let buttons: DynamicSvelteComponent<Hidden>[];
 
-    export let buttons: DynamicSvelteComponent[];
+    function filterHidden({
+        hidden,
+        ...props
+    }: DynamicSvelteComponent & Hidden): DynamicSvelteComponent {
+        return props;
+    }
 </script>
 
 <style lang="scss">
@@ -51,8 +61,10 @@
 
 <ul {id} class={className} {...$$restProps}>
     {#each buttons as button}
-        <li>
-            <svelte:component this={button.component} {...button} />
-        </li>
+        {#if !button.hidden}
+            <li>
+                <svelte:component this={button.component} {...filterHidden(button)} />
+            </li>
+        {/if}
     {/each}
 </ul>
diff --git a/ts/editor-toolbar/format.ts b/ts/editor-toolbar/format.ts
index 52a61060a..1a3fa55a2 100644
--- a/ts/editor-toolbar/format.ts
+++ b/ts/editor-toolbar/format.ts
@@ -79,7 +79,7 @@ const removeFormatButton = commandIconButton<CommandIconButtonProps, "tooltip">(
 const buttonGroup = dynamicComponent(ButtonGroup);
 export const formatGroup = buttonGroup<ButtonGroupProps>(
     {
-        id: "color",
+        id: "format",
         buttons: [
             boldButton,
             italicButton,
diff --git a/ts/editor-toolbar/index.ts b/ts/editor-toolbar/index.ts
index 26111f135..9ac3dac7e 100644
--- a/ts/editor-toolbar/index.ts
+++ b/ts/editor-toolbar/index.ts
@@ -1,4 +1,9 @@
 import type { SvelteComponent } from "svelte";
+import type { DynamicSvelteComponent } from "sveltelib/dynamicComponent";
+
+import type ButtonGroup from "./ButtonGroup.svelte";
+import type { ButtonGroupProps } from "./ButtonGroup";
+
 import { writable } from "svelte/store";
 
 import EditorToolbarSvelte from "./EditorToolbar.svelte";
@@ -18,6 +23,31 @@ export { enableButtons, disableButtons } from "./EditorToolbar.svelte";
 const defaultButtons = [notetypeGroup, formatGroup, colorGroup, templateGroup];
 const defaultMenus = [...templateMenus];
 
+interface Hideable {
+    hidden?: boolean;
+}
+
+function searchByIdOrIndex<T extends { id?: string }>(
+    values: T[],
+    idOrIndex: string | number
+): T | undefined {
+    return typeof idOrIndex === "string"
+        ? values.find((value) => value.id === idOrIndex)
+        : values[idOrIndex];
+}
+
+function hideComponent(component: Hideable) {
+    component.hidden = false;
+}
+
+function showComponent(component: Hideable) {
+    component.hidden = true;
+}
+
+function toggleComponent(component: Hideable) {
+    component.hidden = !component.hidden;
+}
+
 class EditorToolbar extends HTMLElement {
     component?: SvelteComponent;
 
@@ -36,6 +66,77 @@ class EditorToolbar extends HTMLElement {
             });
         });
     }
+
+    updateButtonGroup<T>(
+        update: (component: DynamicSvelteComponent<typeof ButtonGroup> & T) => void,
+        group: string | number
+    ): void {
+        this.buttons.update(
+            (
+                buttonGroups: (DynamicSvelteComponent<typeof ButtonGroup> &
+                    ButtonGroupProps)[]
+            ) => {
+                const foundGroup = searchByIdOrIndex(buttonGroups, group);
+
+                if (foundGroup) {
+                    update(
+                        foundGroup as DynamicSvelteComponent<typeof ButtonGroup> &
+                            ButtonGroupProps &
+                            T
+                    );
+                }
+
+                return buttonGroups;
+            }
+        );
+    }
+
+    showButtonGroup(group: string | number): void {
+        this.updateButtonGroup<Hideable>(showComponent, group);
+    }
+
+    hideButtonGroup(group: string | number): void {
+        this.updateButtonGroup<Hideable>(hideComponent, group);
+    }
+
+    toggleButtonGroup(group: string | number): void {
+        this.updateButtonGroup<Hideable>(toggleComponent, group);
+    }
+
+    updateButton<T>(
+        update: (component: DynamicSvelteComponent & T) => void,
+        group: string | number,
+        button: string | number
+    ): void {
+        this.updateButtonGroup(
+            (
+                foundGroup: DynamicSvelteComponent<typeof ButtonGroup> &
+                    ButtonGroupProps
+            ) => {
+                const foundButton = searchByIdOrIndex(
+                    foundGroup.buttons as (DynamicSvelteComponent & { id?: string })[],
+                    button
+                );
+
+                if (foundButton) {
+                    update(foundButton as DynamicSvelteComponent & T);
+                }
+            },
+            group
+        );
+    }
+
+    showButton(group: string | number, button: string | number): void {
+        this.updateButton<Hideable>(showComponent, group, button);
+    }
+
+    hideButton(group: string | number, button: string | number): void {
+        this.updateButton<Hideable>(hideComponent, group, button);
+    }
+
+    toggleButton(group: string | number, button: string | number): void {
+        this.updateButton<Hideable>(toggleComponent, group, button);
+    }
 }
 
 customElements.define("anki-editor-toolbar", EditorToolbar);
diff --git a/ts/editor-toolbar/template.ts b/ts/editor-toolbar/template.ts
index 6e0ff81dd..cecb7337f 100644
--- a/ts/editor-toolbar/template.ts
+++ b/ts/editor-toolbar/template.ts
@@ -60,6 +60,7 @@ const recordButton = iconButton(
 
 const clozeButton = iconButton<IconButtonProps, "tooltip">(
     {
+        id: "cloze",
         icon: bracketsIcon,
         onClick: onCloze,
     },