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https://issues.apache.org/jira/browse/WICKET-4894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506428#comment-13506428
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Martin Grigorov commented on WICKET-4894:
-----------------------------------------
Hi,
I've experimented with this and it seems IE CSS engine doesn't check for
dynamically injected links in conditional comments.
One solution is wicket-ajax.js to parse the condition before injectiing the
element in the <head> and inject it only when necessary. But this doesn't look
nice at all.
A much better solution is to check this at the server side:
WebClientInfo clientInfo = (WebClientInfo) getSession().getClientInfo();
ClientProperties properties = clientInfo.getProperties();
if (properties.isBrowserInternetExplorer() &&
properties.getBrowserVersionMajor() >= 8)
{
response.renderCSSReference(
new PackageResourceReference( getClass(),
"TestLabel-conditional.css" ));
}
Nice and clean.
> Internet Explorer fails fails to properly include conditional stylesheet
> links added via AjaxRequestTarget
> ----------------------------------------------------------------------------------------------------------
>
> Key: WICKET-4894
> URL: https://issues.apache.org/jira/browse/WICKET-4894
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.5.4
> Reporter: Jonas Pohlandt
> Priority: Minor
> Attachments: quickstart.zip
>
>
> CSS references added like this
> @Override
> public void renderHead( IHeaderResponse response ) {
> super.renderHead( response );
> response.renderCSSReference(
> new PackageResourceReference( getClass(), "TestLabel.css" ));
> response.renderCSSReference(
> new PackageResourceReference( getClass(), "TestLabel-conditional.css"
> ), null, null, "gte IE 8" );
> }
> will not be taken into account by Internet Explorer (tested with 8 and 9) at
> when rendering the document.
> I stepped though wicket-ajax.js and saw that the function added in
> Wicket.Head.Contributor.processComment will actually be executed and a new
> child node will be appended to the head node of the document. Unfortunately
> it seems IE disregards conditional comments added in this way.
> I encountered this using Wicket 1.5.4.
> I'll upload a quickstart.
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