Method processKey

src/LGraphCanvas.ts:3255–3336

* process a key event

(e: KeyboardEvent)

   * process a key event
   */
  processKey(e: KeyboardEvent): void {
    this.#shiftDown = e.shiftKey

    const { graph } = this
    if (!graph) return

    let block_default = false
    // @ts-expect-error
    if (e.target.localName == "input") return

    if (e.type == "keydown") {
      // TODO: Switch
      if (e.key === " ") {
        // space
        this.read_only = true
        if (this._previously_dragging_canvas === null) {
          this._previously_dragging_canvas = this.dragging_canvas
        }
        this.dragging_canvas = this.pointer.isDown
        block_default = true
      } else if (e.key === "Escape") {
        // esc
        if (this.linkConnector.isConnecting) {
          this.linkConnector.reset()
          e.preventDefault()
          return
        }
        this.node_panel?.close()
        this.options_panel?.close()
        if (this.node_panel || this.options_panel) block_default = true
      } else if (e.keyCode === 65 && e.ctrlKey) {
        // select all Control A
        this.selectItems()
        block_default = true
      } else if (e.keyCode === 67 && (e.metaKey || e.ctrlKey) && !e.shiftKey) {
        // copy
        if (this.selected_nodes) {
          this.copyToClipboard()
          block_default = true
        }
      } else if (e.keyCode === 86 && (e.metaKey || e.ctrlKey)) {
        // paste
        this.pasteFromClipboard({ connectInputs: e.shiftKey })
      } else if (e.key === "Delete" || e.key === "Backspace") {
        // delete or backspace
        // @ts-expect-error
        if (e.target.localName != "input" && e.target.localName != "textarea") {
          if (this.selectedItems.size === 0) {
            this.#noItemsSelected()
            return
          }

          this.deleteSelected()
          block_default = true
        }
      }

      // TODO