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Difference between revisions of "GEF/GEF4"

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[[GEF/GEF4 | GEF4]] is the initial name for the the fourth generation API of the [http://www.eclipse.org/gef Graphical Editing Framework (GEF)]. It superseded the [https://www.eclipse.org/gef/draw2d/ Draw2d 3.x], [https://www.eclipse.org/gef/gef_mvc/index.php GEF (MVC) 3.x], and [https://www.eclipse.org/gef/zest/index.php Zest 1.x] legacy components, which are not developed further but only maintained.
  
[[GEF/GEF4 | GEF4]] is the unified effort of the [http://www.eclipse.org/gef Graphical Editing Framework (GEF)] project team to develop a new GEF 4.x code base as a modernization of the current production components [https://www.eclipse.org/gef/draw2d/ Draw2d 3.x], [https://www.eclipse.org/gef/gef_mvc/index.php GEF (MVC) 3.x], and [https://www.eclipse.org/gef/zest/index.php Zest 1.x].  
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With the [https://projects.eclipse.org/projects/tools.gef/releases/5.0.0-oxygen Oxygen release] GEF4 was evolved into GEF 5.0.0, as outlined in [http://nyssen.blogspot.de/2017/02/gef4-1-gef-5.html#Merger%20of%20MVC%20and%20MVC.FX 'GEF4 + 1 = GEF 5'], while the term 'GEF-Legacy' was established to refer to the legacy production components.
  
Being developed in parallel to maintaining the production components, [[GEF/GEF4 | GEF4]] is set up in terms of smaller, more lightweight [[#Components / Reference Documentation | components]], uses JavaFX instead of SWT as rendering technology, and allows to build up graphical applications for Eclipse (using a JavaFX-SWT-integration) as well as standalone.
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For further information, please consider the [https://github.com/eclipse/gef#eclipse-graphical-editing-framework-gef GitHub README] or the meta-data at [https://projects.eclipse.org/projects/tools.gef projects.eclipse.org].
 
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Please note that '''all GEF4 API is still provisional''', i.e. there is no released API yet. Therefore, all API-packages are exported with the x-internal directive. To differentiate them from non-API packages, all non-API packages are explicitly named as 'internal' and are either not exported by the bundle manifest, or only via an x-friends directive (if they are used in other test bundles, etc.). You may want to consult the [[GEF/Contributor_Guide | Contributor Guide]] for details on how to set up your IDE to get rid of any restricted access warnings that are caused by this policy.
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== Current Status ==
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All GEF4 components are part of the [http://projects.eclipse.org/projects/tools.gef/releases/3.10.0-mars GEF 3.10.0 (Mars)] contribution to the [https://projects.eclipse.org/releases/mars Mars simultaneous release].
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Having complete the migration of the Zest 2.x code base to GEF4 with Mars M6 (see [https://bugs.eclipse.org/bugs/show_bug.cgi?id=372365 #372365] for details), we are currently working on closing parts of the remaining functional gap between GEF4 and GEF 3.x. From M7 onwards we will concentrate to augment the [[#Components / Reference Documentation | reference documentation]].
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== Components / Reference Documentation ==
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GEF4 is internally constituted of the following nine components (with their respective sub-modules). The reference documentation for each component may be accessed via the component links.
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[[Image:GEF4_Vision.png|600px]]
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* [[GEF/GEF4/Common | <span style="color:#5B8E92">GEF4 Common</span>]] - Provides basic abstractions and infrastructure used by (potentially) all other GEF4 components, including an enhanced [http://nyssen.blogspot.de/2014/11/iadaptable-gef4s-interpretation-of.html adaptable pattern] and notification support.
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* [[GEF/GEF4/Geometry | <span style="color:#268558">GEF4 Geometry (Geometry / Geoemtry.Convert.SWT / Geometry.Convert.FX)</span>]] - Provides different abstractions (Euclidean, Projective, Planar) for 2D geometric calculations, and conversions of planar geometries (curves, shapes, poly shapes) to/from respective SWT, AWT, and JavaFX equivalents (as well as conversions between SWT and AWT geometries).
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* [[GEF/GEF4/FX | <span style="color:#4C6084">GEF4 FX (FX / FX.UI)</span>]] - Provides support for rendering [[GEF/GEF4/Geometry | GEF4 Geometry]]-based shapes, as well as abstractions that are needed in the context of graphical editors and views, i.e. visual anchor implementations and a connection abstraction. Also enhances the JavaFX-SWT-Integration with forwarding of touch gestures and provides proper support for embedding SWT Controls via a generic adapter into a JavaFX scene graph (within the context of the JavaFX SWT integration). 
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* [[GEF/GEF4/Graph | <span style="color:#960607">GEF4 Graph</span>]] Provides a simply, UI-independent data-model (Graph, Node, Edge) for representing directed graphs. Is used as input/output model by [[GEF/GEF4/DOT | GEF4 DOT]] and underlying visualization-model for [[GEF/GEF4/Zest | GEF4 Zest]].
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* [[GEF/GEF4/Layout | <span style="color:#7C866A">GEF4 Layout</span>]] - Provides layout algorithm implementations as well as a model facade to adapt layout model data for these algorithms.
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* [[GEF/GEF4/MVC | <span style="color:#05124E">GEF4 MVC (MVC / MVC.UI / MVC.FX / MVC.FX.UI)</span>]] - The core model-view-controller framework to build up graphical editors and views. Provides an UI toolkit independent and a JavaFX specific layer, as well as Eclipse-UI integration for both. Can be used to build standalone and Eclipse-integrated editors and views.
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* [[GEF/GEF4/Zest | <span style="color:#206FAD">GEF4 Zest (Zest.FX / Zest.FX.UI)</span>]] - Visualization framework that supports visualization of [[GEF/GEF4/Graph | GEF4 Graph]]-based models, integrating automated layout based on [[GEF/GEF4/Layout | GEF4 Layout]].
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* [[GEF/GEF4/DOT | <span style="color:#561D8E">GEF4 DOT (DOT / DOT.UI)</span>]] Provides a basic [http://www.graphviz.org GraphViz] [http://www.graphviz.org/content/dot-language DOT]-Editor (Xtext) as well as a [[GEF/GEF4/Zest | GEF4 Zest]]-based [http://www.graphviz.org/content/dot-language DOT]-visualization.
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* [[GEF/GEF4/Cloudio | <span style="color:#8A3572">GEF4 Cloudio</span>]]  - Provides support for visualizing tag clouds. Is based on SWT/JFace, integrated in the Eclipse UI, and will (at least for now) not be ported to JavaFX.
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== Developer Resources ==
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All relevant information about how to obtain our source code, where to find our Hudson build jobs, update sites (CI, milestones, releases), mailing lists, or our forum, etc. can all be found in the respective sections of the [https://projects.eclipse.org/projects/tools.gef GEF project dashboard]. In addition to this, there is a dedicated [[GEF/Contributor Guide | Contributor Guide]] that describes how to setup a workspace, provide a patch, execute a headless Tycho-build, and more.
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The reference documentation for each GEF4 component is referenced from within the [[#Components / Reference Documentation | components]] section.
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== Further Reading ==
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Further information about the history and current plans, as well as on technical details can be inferred from the following presentations/articles/posts:
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* [http://www.eclipsecon.org/2012/sites/eclipsecon.org.2012/files/GEF_Past_Present_Future_0.pdf Alexander Nyßen (2012): GEF - Past, Present, and Future, EclipseCon NA, Reston (VA), 2012]
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* [http://www.eclipsecon.org/europe2012/sites/eclipsecon.org.europe2012/files/GEF4_Share_And_Enjoy_0.pdf Alexander Nyßen (2012): GEF4 - Share And Enjoy..., EclipseCon Europe, Ludwigsburg, 2012]
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* [http://www.eclipsecon.org/2013/sessions/gef4-share-and-enjoy Alexander Nyßen (2013): GEF4 - (Continue to) Share and Enjoy..., EclipseCon NA, Boston (MA), 2013]
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* [[media:GEF4_SwtFX.pdf | Alexander Nyßen (2013): GEF4 SwtFX (Lightning Talks), EclipseCon Europe, Ludwigsburg, 2013 ]]
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* [[media:GEF4.pdf | Alexander Nyßen (2013): GEF4, RheinJug, Düsseldorf, 2013 ]]
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* [https://www.eclipsecon.org/na2014/sites/default/files/slides/GEF4_There_s_really_something_going_on_0.pdf Alexander Nyßen (2014): GEF4 - There's really something going on!, EclipseCon NA, San Francisco (CA), 2014]
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* [https://www.eclipsecon.org/europe2014/sites/default/files/slides/GEF4_Our_mission_to_Mars.pdf Alexander Nyßen (2014): GEF4 - Our mission to Mars, EclipseCon Europe, Ludwigsburg, 2014]
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* [http://nyssen.blogspot.de/2014/11/iadaptable-gef4s-interpretation-of.html Alexander Nyßen (2014): IAdaptable - GEF4's Interpretation of a Classic, ANy's Argument (Blog)]
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[[Category:GEF]]
 
[[Category:GEF]]

Latest revision as of 09:09, 15 May 2017

GEF4 is the initial name for the the fourth generation API of the Graphical Editing Framework (GEF). It superseded the Draw2d 3.x, GEF (MVC) 3.x, and Zest 1.x legacy components, which are not developed further but only maintained.

With the Oxygen release GEF4 was evolved into GEF 5.0.0, as outlined in 'GEF4 + 1 = GEF 5', while the term 'GEF-Legacy' was established to refer to the legacy production components.

For further information, please consider the GitHub README or the meta-data at projects.eclipse.org.

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