{"id":1592,"date":"2014-10-09T17:38:07","date_gmt":"2014-10-09T15:38:07","guid":{"rendered":"http:\/\/www.jensd.de\/wordpress\/?p=1592"},"modified":"2014-10-09T17:38:07","modified_gmt":"2014-10-09T15:38:07","slug":"the-jdk-8u20-tap-trap","status":"publish","type":"post","link":"https:\/\/www.jensd.de\/wordpress\/?p=1592","title":{"rendered":"The JDK 8u20 “Tap trap”"},"content":{"rendered":"

When switching MQTT.fx to JDK 8u20 I was nicked by the fix of RT-24658<\/a>.
\nThe fix definitely makes sense but may clash with my TabPaneDetacher<\/a> approach.<\/p>\n

In MQTT.fx<\/a> the content of the Tabs is disabled as long the MQTT-Broker is not connected.
\nAnd I am using Property Bindings for this. E.g. in the PublishController “publishBox” is the root of the Publish-Tab content and it is bound to the brokerConnectedProperty()<\/strong><\/code>:
\n[java]
\npublishBox.disableProperty().bind(model.brokerConnectedProperty().not());
\n[\/java]<\/p>\n

This worked well until JDK 8u20 as now this leads into:
\n
\nException in thread \"JavaFX Application Thread\" java.lang.RuntimeException: A bound value cannot be set.
\n\tat javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:139)
\n\tat javafx.scene.Node.setDisable(Node.java:1539)
\n [...]
\n<\/strong><\/code>
\nThis is because each time when e.g. adding a Tab<\/strong><\/code> to a TabPane <\/strong><\/code> updateDisabled()<\/strong><\/code> is called to explicitly SET<\/strong> the disabled value of the content also:<\/p>\n

[java]
\n private void updateDisabled() {
\n boolean disabled = isDisable() || (getTabPane() != null && getTabPane().isDisabled());
\n setDisabled(disabled);<\/p>\n

\/\/ Fix for RT-24658 – content should be disabled if the tab is disabled
\n Node content = getContent();
\n if (content != null) {
\n content.setDisable(disabled);
\n }
\n }
\n[\/java]<\/p>\n

Options to deal with this:<\/strong>
\nQuit using Binding here and use ChangeListener<\/strong><\/code> instead.
\nOr simply wrap the content root in another Pane.<\/p>\n","protected":false},"excerpt":{"rendered":"

When switching MQTT.fx to JDK 8u20 I was nicked by the fix of RT-24658. The fix definitely makes sense but may clash with my TabPaneDetacher approach. In MQTT.fx the content of the Tabs is disabled as long the MQTT-Broker is not connected. And I am using Property Bindings for this. E.g. in the PublishController “publishBox”… <\/span>Continue Reading The JDK 8u20 “Tap trap”<\/span><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false,"jetpack_publicize_message":"The JDK 8u20 \"Tap trap\" http:\/\/wp.me\/p38FCL-pG","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[51,52,4],"tags":[107,108,76],"jetpack_publicize_connections":[],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p38FCL-pG","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1592"}],"collection":[{"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1592"}],"version-history":[{"count":12,"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1592\/revisions"}],"predecessor-version":[{"id":1604,"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1592\/revisions\/1604"}],"wp:attachment":[{"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jensd.de\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}