move some nodeview logic to core

packages/core/src/NodeView.ts

@@ -0,0 +1,180 @@
+import { Decoration, NodeView as ProseMirrorNodeView } from 'prosemirror-view'
+import { NodeSelection } from 'prosemirror-state'
+import { Node as ProseMirrorNode } from 'prosemirror-model'
+import { Editor as CoreEditor } from './Editor'
+import { Node } from './Node'
+import { NodeViewRendererProps } from './types'
+
+interface NodeViewRendererOptions {
+  stopEvent: ((event: Event) => boolean) | null,
+  update: ((node: ProseMirrorNode, decorations: Decoration[]) => boolean) | null,
+}
+
+export class NodeView<Component, Editor extends CoreEditor = CoreEditor> implements ProseMirrorNodeView {
+
+  component: Component
+
+  editor: Editor
+
+  extension: Node
+
+  node: ProseMirrorNode
+
+  decorations: Decoration[]
+
+  getPos: any
+
+  isDragging = false
+
+  options: NodeViewRendererOptions = {
+    stopEvent: null,
+    update: null,
+  }
+
+  constructor(component: Component, props: NodeViewRendererProps, options?: Partial<NodeViewRendererOptions>) {
+    this.component = component
+    this.options = { ...this.options, ...options }
+    this.editor = props.editor as Editor
+    this.extension = props.extension
+    this.node = props.node
+    this.decorations = props.decorations
+    this.getPos = props.getPos
+    this.mount()
+  }
+
+  mount() {
+    // eslint-disable-next-line
+    return
+  }
+
+  get dom(): Element | null {
+    return null
+  }
+
+  get contentDOM(): Element | null {
+    return null
+  }
+
+  onDragStart(event: DragEvent) {
+    if (!this.dom) {
+      return
+    }
+
+    const { view } = this.editor
+    const target = (event.target as HTMLElement)
+
+    if (this.contentDOM?.contains(target)) {
+      return
+    }
+
+    // sometimes `event.target` is not the `dom` element
+    event.dataTransfer?.setDragImage(this.dom, 0, 0)
+
+    const selection = NodeSelection.create(view.state.doc, this.getPos())
+    const transaction = view.state.tr.setSelection(selection)
+
+    view.dispatch(transaction)
+  }
+
+  stopEvent(event: Event) {
+    if (!this.dom) {
+      return false
+    }
+
+    if (typeof this.options.stopEvent === 'function') {
+      return this.options.stopEvent(event)
+    }
+
+    const target = (event.target as HTMLElement)
+    const isInElement = this.dom.contains(target) && !this.contentDOM?.contains(target)
+
+    // ignore all events from child nodes
+    if (!isInElement) {
+      return false
+    }
+
+    const { isEditable } = this.editor
+    const { isDragging } = this
+    const isDraggable = !!this.node.type.spec.draggable
+    const isSelectable = NodeSelection.isSelectable(this.node)
+    const isCopyEvent = event.type === 'copy'
+    const isPasteEvent = event.type === 'paste'
+    const isCutEvent = event.type === 'cut'
+    const isClickEvent = event.type === 'mousedown'
+    const isDragEvent = event.type.startsWith('drag') || event.type === 'drop'
+
+    // ProseMirror tries to drag selectable nodes
+    // even if `draggable` is set to `false`
+    // this fix prevents that
+    if (!isDraggable && isSelectable && isDragEvent) {
+      event.preventDefault()
+    }
+
+    if (isDraggable && isDragEvent && !isDragging) {
+      event.preventDefault()
+      return false
+    }
+
+    // we have to store that dragging started
+    if (isDraggable && isEditable && !isDragging && isClickEvent) {
+      const dragHandle = target.closest('[data-drag-handle]')
+      const isValidDragHandle = dragHandle
+        && (this.dom === dragHandle || (this.dom.contains(dragHandle)))
+
+      if (isValidDragHandle) {
+        this.isDragging = true
+        document.addEventListener('dragend', () => {
+          this.isDragging = false
+        }, { once: true })
+      }
+    }
+
+    // these events are handled by prosemirror
+    if (
+      isDragging
+      || isCopyEvent
+      || isPasteEvent
+      || isCutEvent
+      || (isClickEvent && isSelectable)
+    ) {
+      return false
+    }
+
+    return true
+  }
+
+  ignoreMutation(mutation: MutationRecord | { type: 'selection', target: Element }) {
+    if (mutation.type === 'selection') {
+      if (this.node.isLeaf) {
+        return true
+      }
+
+      return false
+    }
+
+    if (!this.contentDOM) {
+      return true
+    }
+
+    const contentDOMHasChanged = !this.contentDOM.contains(mutation.target)
+      || this.contentDOM === mutation.target
+
+    return contentDOMHasChanged
+  }
+
+  updateAttributes(attributes: {}) {
+    if (!this.editor.view.editable) {
+      return
+    }
+
+    const { state } = this.editor.view
+    const pos = this.getPos()
+    const transaction = state.tr.setNodeMarkup(pos, undefined, {
+      ...this.node.attrs,
+      ...attributes,
+    })
+
+    this.editor.view.dispatch(transaction)
+  }
+
+}

packages/core/src/index.ts

@@ -2,6 +2,7 @@ export * from './Editor'
 export * from './Extension'
 export * from './Node'
 export * from './Mark'
+export * from './NodeView'
 export * from './types'
 
 export { default as nodeInputRule } from './inputRules/nodeInputRule'