getting the current editStateFlags for canCut, canCopy,etc.

[jjacobson]

I there a way to query the browser for the ability to perform selection actions like those available in the cef_context_menu_edit_state_flags_t (CanUndo, CanRedo, CanCut, CanPaste, CanCopy, CanDelete, CanSelectAll)? These EditStateFlags come in on the OnBeforeContextmenu but I also need access to this information to enable/disable buttons and items in a file menu bar as well.

[magreenblatt]

There is no way to query the browser for this state currently.

EDIT: You can determine the edit state via JavaScript and provide that information to the browser process.

[jjacobson]

Thanks for the quick reply the other day.

For anyone else looking this up later.
the javascript document.queryCommandEnabled("cut"); "copy"/"selectAll"/... etc. work well for my purposes.
sending that state any time those values are likely to change adds alot more messages going back to the native code but it doesn't seem to cause any problems.

also note, document.queryCommandEnabled("delete") seems to return 'true' alot more often than it should, (even when the browser context menu says delete is disabled) but checking document.queryCommandEnabled("cut") works as a workaround for most situations.

[magreenblatt]

How frequently are you sending the state updates? If you use some reasonable interval (say, 200ms) then your messages will be a drop in the bucket compared to the messages that Chromium sends regularly.

[BobM]

I'm trying to implement this - CanPaste/CanCut etc for the application main menu.

Can someone show please how to get the result of document.queryCommandEnabled("cut"); in the native application?

I'm thinking that I need to use window binding.

Code: Select all

void ClientApp::OnContextCreated(
  CefRefPtr<CefBrowser> browser,
  CefRefPtr<CefFrame> frame,
  CefRefPtr<CefV8Context> context)
{
  CefRefPtr<CefV8Value> object = context->GetGlobal();

  CefRefPtr<CefV8Value> canpastebool = CefV8Value::CreateBool(false);

  object->SetValue("canpaste", canpastebool, V8_PROPERTY_ATTRIBUTE_NONE);
}

and in native code....

Code: Select all

  if (m_cefBrowser)
  {
    CefRefPtr<CefFrame> frame = m_cefBrowser->GetMainFrame();
    frame->ExecuteJavaScript("window.canpaste = document.queryCommandEnabled(\"paste\");", frame->GetURL(), 0);
  }


Is this looking close or am I on the wrong track?

Thanks