Search Widget occurence navigation not working when using "search" hash parameter.

[ghost]

Link to PDF file (or attach file here):
Can be reproduced using the demo / sample : https://mozilla.github.io/pdf.js/web/viewer.html#search=language

Configuration:

• Web browser and its version:
  Any
• Operating system and its version:
  Any
• PDF.js version:
  Found in latest stable (v1.6.210), reproducible in online demo (1.7.378)
• Is an extension:
  No

Steps to reproduce the problem:

1. Use a url with search param : https://mozilla.github.io/pdf.js/web/viewer.html#search=language
2. Open the search widget (with the intention of using "next occurence" by exemple).

What is the expected behavior? (add screenshot)

• Clicking on "next occurence" should be working.
• The current active search term should be visible instead of place holder "Find in document...".

What went wrong? (add screenshot)

• Previous / next occurence are not working.
• Current search term is not visible.

[ghost]

It's probably not the clean solution (should be done within findfromurlhash handler?) but I have patched our local version with this :

    setHash: function PDFLinkService_setHash(hash) {
      var pageNumber, dest;
      if (hash.indexOf('=') >= 0) {
        var params = parseQueryString(hash);
        if ('search' in params) {

          // If search param exist. Set it in Search bar find field.
          // So that the user can use next occurent as expected.
          var searchText = params['search'].replace(/"/g, '');
          if (searchText) {
            PDFViewerApplication.findBar.findField.value = searchText;
          }

          this.eventBus.dispatch('findfromurlhash', {
            source: this,
            query: searchText,
            ...

[yurydelendik]

See also #5579 (comment)