Wt

To reproduce this bug you can use our test installation at http://arm4.de:81/fcgi-bin/myarmbrowser.fcgi

Hit "Use"-Button in the top middle of the view. And select first one configuration from the "Configuration" combo-box and later a second config!

This URL leads directly to a javascript error: http://arm4.de:81/fcgi-bin/myarmbrowser.fcgi?cfg=HTTP-CDDB-Sequence

with Wt-3.3.1 and Wt-3.2.3 this worked fine!

Hi Koen,

I use the following code:

void WComboBoxItemHidden(Wt::WComboBox* cb, int item, bool hidden)
{
   if((item>=0) && (item<cb->count()))
   {
      std::string d = hidden ? "'none'" : "'block'";
      std::stringstream ss;
      ss << cb->jsRef() << ".options[" << item << "].style.display=" << d << ";";
      Wt::WApplication::instance()->doJavaScript(ss.str());
   }
}

Is there a difference between Wt::WApplication::instance()->doJavaScript() and WWidget::doJavaScript()?

Regards,

Stefan

Hey Stefan,

Yes: WWidget::doJavaScript() will defer the JavaScript until the widget is actually rendered.

And I forgot: the ability to make certain combo-box items disabled or hidden seems generally useful. Does that work on all major browsers? We would be happy to implement features like these in the library.

Regards,

koen

Hi Koen,

using WWidget::doJavaScript() seems to work! Thanks!

Disabling an item works in Firefox, Chrome, IE and Opera, Hiding only in Firefox and Chrome. Maybe you can implement a Hidden flag in WStringListModel and the default is to remove the complete option and in Firefox and Chrome you can just set the display attribute to none?

Regards,

Stefan

Hey,

It sounds like we should then implement disabled, supported as a WAbstractItemModel flag.

Can you file this as a feature request?

Regards,

koen

Hi,

to reproduce the above error use this URL: http://arm4.de:81/fcgi-bin/myarmbrowser.fcgi?cfg=CDDB-Query-Overview and select "HTTP-arm4sdk" entry fro the Configuration Combobox.

Regards,

Stefan

Hi,

I digged more into detail and find the code which causes this error: My older implementation of setModus() (#if 1) works and my newer implementation (#else branch) does not work with wt-3.3.2 but works with wt-3.3.1!

#if 1
void SelectionViewWidget::setModus(int i)
{
   if(mModus->modus() != i)
      mModus->setModus(i);

   removeWidget(mStretch);
   removeWidget(mSystemList);
   removeWidget(mApplicationList);
   removeWidget(mTransactionList);
   removeWidget(mUserList);
   removeWidget(mAttributeFilter);

   mConstraints.mModus = i;
   switch(mConstraints.mModus)
   {
   case MO_NOTHING:
      break;
   case MO_SYSTEMS:
      mLayout->addWidget(mSystemList, 0, AlignTop);
      break;
   .......
   case MO_USERS_SYSTEMS:
      mLayout->addWidget(mUserList, 0, AlignTop);
      mLayout->addWidget(mSystemList, 0, AlignTop);
      break;
   }
   if(mConstraints.mModus != MO_NOTHING)
      mLayout->addWidget(mAttributeFilter, 0, AlignTop);
   mLayout->addWidget(mStretch, 1);
}
#else
void SelectionViewWidget::setModus(ModusOperandi i)
{
   if(mModus->modus() != i)
      mModus->setModus(i);

   WVBoxLayout* layout = new WVBoxLayout();
   layout->setContentsMargins(2, 2, 2, 2);
   layout->addWidget(mConfigButtons);
   layout->addWidget(mModus        );

   mConstraints.mModus = i;
   switch(mConstraints.mModus)
   {
   case MO_NOTHING:
      break;
   case MO_SYSTEMS:
      layout->addWidget(mSystemList);
      break;
   ........
   case MO_USERS_SYSTEMS:
      layout->addWidget(mUserList);
      layout->addWidget(mSystemList);
      break;
   }
   if(mConstraints.mModus != MO_NOTHING)
      layout->addWidget(mAttributeFilter);
   layout->addWidget(mStretch, 1);
   setLayout(layout);
}
#endif

Hi,

I turned debug-option on!

Regards,

Stefan

Hey stefan,

Great. Thanks. I think I know what's going on. I'll reproduce this here, and get it fixed ASAP (for 3.3.2).

Regards,

koen

Hi Koen,

latest git version seems to fix our problem.

Thanks,

Stefan