add basic new chaining

packages/core/src/commands/insertHTML.ts

@@ -1,8 +1,10 @@
 import { DOMParser } from 'prosemirror-model'
-import { Editor } from '../Editor'
+import { Selection } from 'prosemirror-state'
+import { Command } from '../Editor'
 import elementFromString from '../utils/elementFromString'
+import {ReplaceStep, ReplaceAroundStep} from "prosemirror-transform"
 
-type InsertHTMLCommand = (value: string) => Editor
+type InsertHTMLCommand = (value: string) => Command
 
 declare module '../Editor' {
   interface Editor {
@@ -10,13 +12,28 @@ declare module '../Editor' {
   }
 }
 
-export default (next: Function, editor: Editor) => (value: string) => {
-  const { view, state } = editor
-  const { selection } = state
+// TODO: move to utils
+// https://github.com/ProseMirror/prosemirror-state/blob/master/src/selection.js#L466
+function selectionToInsertionEnd(tr, startLen, bias) {
+  let last = tr.steps.length - 1
+  if (last < startLen) return
+  let step = tr.steps[last]
+  if (!(step instanceof ReplaceStep || step instanceof ReplaceAroundStep)) return
+  let map = tr.mapping.maps[last], end
+  map.forEach((_from, _to, _newFrom, newTo) => { if (end == null) end = newTo })
+  tr.setSelection(Selection.near(tr.doc.resolve(end), bias))
+}
+
+export const insertHTML: InsertHTMLCommand = value => ({ tr, editor }) => {
+  console.log({tr })
+  const { state } = editor
+  const { selection } = tr
   const element = elementFromString(value)
   const slice = DOMParser.fromSchema(state.schema).parseSlice(element)
-  const transaction = state.tr.insert(selection.anchor, slice.content)
 
-  view.dispatch(transaction)
-  next()
+  tr.insert(selection.anchor, slice.content)
+  // TODO: set correct bias by content
+  selectionToInsertionEnd(tr, tr.steps.length - 1, -1)
+
+  return true
 }