JEP 209: JavaFX Scene Builder UpdateJEP 209: JavaFX Scene Builder UpdateOwnerSimon VienotTypeFeatureScopeJDKStatusClosed / DeliveredRelease8u40Componentclient-libsDiscussionopenjfx dash dev at openjdk dot java dot netEffortMDurationMRelates toJEP 205: New Controls for JavaFXJEP 204: JavaFX AccessibilityReviewed byEric Le PonnerEndorsed byRichard BairCreated2014/06/25 17:51Updated2014/10/01 16:14Issue8048125Summary
Update Scene Builder (SB) to support the new JavaFX features introduced
in the 8u40 release and also address the most critical limitations of
the SB 2.0 release, in particular the handling of FXML references.  No
significant new features will be added.
Goals


Allow the user to open and edit FXML documents which contain the new
JFX UI components introduced in 8u40 (Spinner, Dialogs, and
FormattedTextField).


Allow the user to drag and drop the new UI components from the
palette into the document.


Provide minimal support to edit the properties of the new UI
components and re-parent them within the document hierarchy.


Make sure all the accessible UI Controls behave properly in the SB
UI.


Make FXML support more robust.


Non-Goals


Provide full editing capability for the new UI components.


Provide new direct-manipulation gestures.


Provide the ability to visualize components which are not JFX nodes
in the design view.


Provide extended capabilities to make an accessible UI design.


Make SB fully accessible.


Motivation
JDK 8u40 release brings important changes to JavaFX with new UI
components and the support of accessibility.  Scene Builder must be
updated to support this new functionality.  Beyond the need to expose the
new features to the user, such as providing new UI components in the
builtin library, we must update SB to allow the user to work with
documents containing any of the new UI components.  This is due to the
fact that SB is packaged as a self contained application bundle, with its
own private copy of the JRE.  The private JRE determines the set of
builtin components which SB is able to instantiate, so it should always
be aligned with the last release of the platform.  We also need to
address the main limitations of the SB 2.0 release, especially those
which prevent preserving the integrity of the content (and formatting) of
FXML documents.
Description

Support for the Spinner UI Control

The Spinner control will be made available in the Controls section of the
Library Panel so that the user can drag and drop it into the Content or
Hierarchy panels, and further position or re-parent it, edit its
properties, similar to what is done with a ComboBox control today.

Support the FormattedTextField UI Control

The FormattedText control will be made available in the Controls section
of the Library Panel so the user can drag and drop it into the Content or
Hierarchy panels, and further position or re-parent it, edit its
properties, similar to what is done with a TextField control today.  The
StringConverter used by the control will not be provided by Scene Builder
and will have to be set programmatically by the user.

Support of the new Dialog(s) components

The Dialog and Dialogs components will be made available in the
Miscellaneous section of the Library Panel so the user can drag and drop
them into the Content and Hierarchy Panels, provided they are placed at
the root of the document.  The user will be able to edit the properties
of the Dialog and Dialogs using the Inspector panel.  It will not be
possible to render the content of the Dialog(s) inside the Content Panel
since SB is currently only able to render root components which are JFX
Nodes, and the Dialog(s) are not Nodes.  It will be possible to Preview
the content of the Dialog(s) in a separate window.

Support of Accessibility

Accessibility is likely to require an extension of the FXML file format.
Scene Builder adheres strongly to the FXML specification.  Some work will
be required to ensure that SB is able to read, edit, and write FXML files
which include accessibility information.  SB will not support the editing
of this information but it will preserve any existing information found
in an FXML file (e.g., hand-coded by the developer).

Overcome major limitations of the existing FXML support

Scene Builder 2.0.1 will provide support for the fx:reference and
$fxid constructs such that FXML documents using these constructs can be
safely edited and remain valid.
Testing
This minor update of Scene Builder does not introduce any significant new
feature or UI workflow.  No significant change to the existing SB UI is
planned either.  It should be possible to re-use existing test frameworks
and extend existing test suites with new test cases similar to existing
ones.
Dependences


Availability of the new UI components API
(JEP 205), and
its being appropriate for use in FXML.


Potential revision of FXML syntax due to accessibility support in the
platform
(JEP 204)
may imply substantial work in SB.


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