[Webkit-unassigned] [Bug 206341] New: [GTK] Missing onbeforeinput or extra oninput in certain case

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206341

            Bug ID: 206341
           Summary: [GTK] Missing onbeforeinput or extra oninput in
                    certain case
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcrha at redhat.com
                CC: bugs-noreply at webkitgtk.org

As far as I know, every oninput event should be preceded by onbeforeinput, or at least things like entering text and deleting it should do that. I found out a case, where it is not done, the onbeforeinput is missing or the oninput is invoked in error.

Steps:
a) open MiniBrowser in editor mode:

   $ MiniBrowser --editor-mode

b) open the Web Inspector and execute in the JavaScript console these two commands:

   document.body.onbeforeinput = function(event) { console.log("before input:" + event.inputType); };
   document.body.oninput = function(event) { console.log("input:" + event.inputType); };

c) click with the mouse to the window body
d) press these keys: <Enter><Backspace>

   The console should show:

      before input:insertParagraph
      input:insertParagraph
      before input:deleteContentBackward
      input:deleteContentBackward

   So far so good.

d) press this key once: <Backspace>

   While there should be added to the console:

      before input:deleteContentBackward
      input:deleteContentBackward

   there's only added:

      input:deleteContentBackward

   thus the onbeforeinput invocation is missing.

Pressing <Backspace> again doesn't invoke onbeforeinput, neither oninput, as expected.

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