Update to use weak map

Author: Andrew L

src/index.ts

@@ -1,4 +1,3 @@
-import {OptionConfig, PASTE_AS_PLAIN_TEXT_ATTRIBUTE} from './option-config'
 import {install as installHTML, uninstall as uninstallHTML} from './paste-markdown-html'
 import {install as installImageLink, uninstall as uninstallImageLink} from './paste-markdown-image-link'
 import {install as installLink, uninstall as uninstallLink} from './paste-markdown-link'
@@ -8,15 +7,14 @@ import {
 } from './paste-keyboard-shortcut-helper'
 import {install as installTable, uninstall as uninstallTable} from './paste-markdown-table'
 import {install as installText, uninstall as uninstallText} from './paste-markdown-text'
+import {OptionConfig} from './option-config'
 
 interface Subscription {
   unsubscribe: () => void
 }
 
 function subscribe(el: HTMLElement, optionConfig?: OptionConfig): Subscription {
-  markElementWithConfigIfNeeded(el, optionConfig)
-
-  installSkipFormatting(el, installTable, installImageLink, installLink, installText, installHTML)
+  installSkipFormatting(el, [installTable, installImageLink, installText, installHTML], [installLink], optionConfig)
   return {
     unsubscribe: () => {
       uninstallSkipFormatting(el)
@@ -29,12 +27,6 @@ function subscribe(el: HTMLElement, optionConfig?: OptionConfig): Subscription {
   }
 }
 
-function markElementWithConfigIfNeeded(el: HTMLElement, optionConfig?: OptionConfig) {
-  if (optionConfig?.pasteAsPlainText) {
-    el.setAttribute(PASTE_AS_PLAIN_TEXT_ATTRIBUTE, 'true')
-  }
-}
-
 export {
   subscribe,
   installHTML,

src/option-config.ts

@@ -1,7 +1,3 @@
-const PASTE_AS_PLAIN_TEXT_ATTRIBUTE = 'data-paste-as-plain-text'
-
-interface OptionConfig {
+export interface OptionConfig {
   pasteAsPlainText?: boolean
 }
-
-export {PASTE_AS_PLAIN_TEXT_ATTRIBUTE, OptionConfig}

src/paste-keyboard-shortcut-helper.ts

@@ -1,3 +1,5 @@
+import {OptionConfig} from './option-config'
+
 const skipFormattingMap = new WeakMap<HTMLElement, boolean>()
 
 function setSkipFormattingFlag(event: KeyboardEvent): void {
@@ -21,13 +23,22 @@ export function shouldSkipFormatting(el: HTMLElement): boolean {
   return shouldSkipFormattingState
 }
 
-export function installAround(el: HTMLElement, ...installCallbacks: Array<(el: HTMLElement) => void>): void {
+export function installAround(
+  el: HTMLElement,
+  installCallbacks: Array<(el: HTMLElement) => void>,
+  installCallbacksWithOptions: Array<(el: HTMLElement, optionConfig?: OptionConfig) => void>,
+  optionConfig?: OptionConfig
+): void {
   el.addEventListener('keydown', setSkipFormattingFlag)
 
   for (const installCallback of installCallbacks) {
     installCallback(el)
   }
 
+  for (const installCallback of installCallbacksWithOptions) {
+    installCallback(el, optionConfig)
+  }
+
   el.addEventListener('paste', unsetSkipFormattedFlag)
 }
 

src/paste-markdown-link.ts

@@ -1,8 +1,11 @@
-import {PASTE_AS_PLAIN_TEXT_ATTRIBUTE} from './option-config'
+import {OptionConfig} from './option-config'
 import {insertText} from './text'
 import {shouldSkipFormatting} from './paste-keyboard-shortcut-helper'
 
-export function install(el: HTMLElement): void {
+const pasteAsPlainTextMap = new WeakMap<HTMLElement, boolean>()
+
+export function install(el: HTMLElement, optionConfig?: OptionConfig): void {
+  pasteAsPlainTextMap.set(el, optionConfig?.pasteAsPlainText === true)
   el.addEventListener('paste', onPaste)
 }
 
@@ -13,7 +16,7 @@ export function uninstall(el: HTMLElement): void {
 function onPaste(event: ClipboardEvent) {
   const {currentTarget: el} = event
   const element = el as HTMLElement
-  const shouldPastePlainText = element.hasAttribute(PASTE_AS_PLAIN_TEXT_ATTRIBUTE)
+  const shouldPastePlainText = pasteAsPlainTextMap.get(element) ?? false
   const shouldSkipDefaultBehavior = shouldSkipFormatting(element)
 
   if ((!shouldPastePlainText && shouldSkipDefaultBehavior) || (shouldPastePlainText && !shouldSkipDefaultBehavior)) {