From 85c1a8ace9102521b4f15a0d466aa9259f64fd24 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philipp=20Ku=CC=88hn?= <kontakt@philipp-kuehn.com>
Date: Mon, 2 Nov 2020 12:45:19 +0100
Subject: [PATCH] add clearNodes command

---
 packages/core/src/extensions/clearNodes.ts | 42 ++++++++++++++++++++++
 packages/core/src/extensions/index.ts      |  1 +
 packages/core/src/extensions/toggleList.ts |  3 +-
 3 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 packages/core/src/extensions/clearNodes.ts

diff --git a/packages/core/src/extensions/clearNodes.ts b/packages/core/src/extensions/clearNodes.ts
new file mode 100644
index 000000000..5d7557676
--- /dev/null
+++ b/packages/core/src/extensions/clearNodes.ts
@@ -0,0 +1,42 @@
+import { liftTarget } from 'prosemirror-transform'
+import { Command } from '../Editor'
+import { createExtension } from '../Extension'
+
+export const ClearNodes = createExtension({
+  addCommands() {
+    return {
+      clearNodes: (): Command => ({ state, tr }) => {
+        const { selection } = tr
+        const { from, to } = selection
+
+        state.doc.nodesBetween(from, to, (node, pos) => {
+          if (!node.type.isText) {
+            const fromPos = tr.doc.resolve(tr.mapping.map(pos + 1))
+            const toPos = tr.doc.resolve(tr.mapping.map(pos + node.nodeSize - 1))
+            const nodeRange = fromPos.blockRange(toPos)
+
+            if (nodeRange) {
+              const targetLiftDepth = liftTarget(nodeRange)
+
+              if (node.type.isTextblock) {
+                tr.setNodeMarkup(nodeRange.start, state.schema.nodes.paragraph)
+              }
+
+              if (targetLiftDepth || targetLiftDepth === 0) {
+                tr.lift(nodeRange, targetLiftDepth)
+              }
+            }
+          }
+        })
+
+        return true
+      },
+    }
+  },
+})
+
+declare module '../Editor' {
+  interface AllExtensions {
+    ClearNodes: typeof ClearNodes,
+  }
+}
diff --git a/packages/core/src/extensions/index.ts b/packages/core/src/extensions/index.ts
index 453aa847a..d90067232 100644
--- a/packages/core/src/extensions/index.ts
+++ b/packages/core/src/extensions/index.ts
@@ -1,5 +1,6 @@
 export { Blur } from './blur'
 export { ClearContent } from './clearContent'
+export { ClearNodes } from './clearNodes'
 export { DeleteSelection } from './deleteSelection'
 export { Focus } from './focus'
 export { InsertHTML } from './insertHTML'
diff --git a/packages/core/src/extensions/toggleList.ts b/packages/core/src/extensions/toggleList.ts
index b9ed6f1a2..ccf302cee 100644
--- a/packages/core/src/extensions/toggleList.ts
+++ b/packages/core/src/extensions/toggleList.ts
@@ -44,7 +44,8 @@ export const ToggleList = createExtension({
         // try to convert node to paragraph if needed
         if (!canWrapInList) {
           return chain()
-            .setBlockType('paragraph')
+            // .setBlockType('paragraph')
+            .clearNodes()
             .wrapInList(listType)
             .run()
         }