Method prepare

src/components/modules/blockSelection.ts:148–185

* Module Preparation * Registers Shortcuts CMD+A and CMD+C * to select all and copy them

()

   * to select all and copy them
   */
  public prepare(): void {
    this.selection = new SelectionUtils();

    /**
     * CMD/CTRL+A selection shortcut
     */
    Shortcuts.add({
      name: 'CMD+A',
      handler: (event) => {
        const { BlockManager, ReadOnly } = this.Editor;

        /**
         * We use Editor's Block selection on CMD+A ShortCut instead of Browsers
         */
        if (ReadOnly.isEnabled) {
          event.preventDefault();
          this.selectAllBlocks();

          return;
        }

        /**
         * When one page consist of two or more EditorJS instances
         * Shortcut module tries to handle all events.
         * Thats why Editor's selection works inside the target Editor, but
         * for others error occurs because nothing to select.
         *
         * Prevent such actions if focus is not inside the Editor
         */
        if (!BlockManager.currentBlock) {
          return;
        }

        this.handleCommandA(event);
      },
      on: this.Editor.UI.nodes.redactor,
    });
  }

  /**
   * Toggle read-only state