# Configuration:
- Web browser and its version: Chrome
- Operating system and its version: MacOS
- PDF.js version: 2.6.347
- Is a browser extension: No

# Steps to reproduce the problem:
1. Implement FindBar, including Find next / Find prev buttons

# What is the expected behavior? (add screenshot)

This might be intentional but seems a bit off. The PDFFindBar findPreviousButton / findNextButton should raise an event with options that can be passed directly to PDFindController.executeCommand

What went wrong? (add screenshot)

PDFBar raises an event on the EventBus which looks like this;

`this.eventBus.dispatch("find", { query: "hello",  ... type: "again" .... });`

https://github.com/mozilla/pdf.js/blob/00b4f86db301546d21d5dc79c61e2a9a829667a4/web/pdf_find_bar.js#L93-L105
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PDFFindController expects;

`pdfFindController.executeCommand("findagain", { query: "hello" });`

Which means you can't just pass the options through because the cmd doesn't match. Is there a reason PDFFindController doesn't just accept the following?

`pdfFindController.executeCommand("find", { query: "hello", type: "again" });`

Seems like it should work this way?

Thanks

if (!tree) {
            return;
          }
          if (!this.canvas) {
            return; 
          }
          const treeDom = this.structTreeLayer.render(tree);
          treeDom.classList.add("structTree");
          this.canvas.appendChild(treeDom);
        });
      };
      this.eventBus._on("textlayerrendered", this._onTextLayerRendered);
      this.structTreeLayer =
        this.structTreeLayerFactory.createStructTreeLayerBuilder(pdfPage);
    }
    div.setAttribute("data-loaded", true);
    this.eventBus.dispatch("pagerender", {
      source: this,
      pageNumber: this.id,
    });
    return resultPromise;
  }
  paintOnCanvas(canvasWrapper) {
    const renderCapability = createPromiseCapability();
    const result = {
      promise: renderCapability.promise,
      onRenderContinue(cont) {
        cont();
      },
      cancel() {