# GEF Zest API Reference

Packages
org.eclipse.gef.zest.fx: This package provides a Guice Module ( `ZestFxModule`) with bindings for Zest.FX, as well a class (`ZestProperties`) that defines all supported graph attributes for visualization and layout.
org.eclipse.gef.zest.fx.behaviors: This package provides behaviors for transferring information between graph model elements and layout abstractions ( `GraphLayoutBehavior`, `AbstractLayoutBehavior`, `NodeLayoutBehavior`, `EdgeLayoutBehavior`), as well as hiding/unhiding of nodes and related edges ( `AbstractHidingBehavior`, `NodeHidingBehavior`, `EdgeHidingBehavior`, `EdgeLabelHidingBehavior`).
org.eclipse.gef.zest.fx.handlers: This package provides handler implementations for Zest interactions.
org.eclipse.gef.zest.fx.jface: This package provides a specific `ContentViewer` to render graphs ( `ZestContentViewer`) and related content and label providers ( `IGraphContentProvider`, `IGraphAttributesProvider`).
org.eclipse.gef.zest.fx.models: This package provides viewer models to support hiding/unhiding of nodes ( `HidingModel`) as well as semantic zooming (`NavigationModel`).
org.eclipse.gef.zest.fx.operations: This package provides an `IUndoableOperation` to support hiding/unhiding of nodes and related edges ( `HideOperation`).

org.eclipse.gef.zest.fx.parts

This package provides a specific root part that enables support for CSS styling (`ZestFxRootPart`), specific content parts for graphs, nodes, and edges ( `GraphPart`, `NodePart`, `EdgePart`), (hover) handle parts to realize hiding/unhiding of nodes ( `HideHoverHandlePart`, `ShowHiddenNeighborsHoverHandlePart`), as well as feedback parts to indicate hidden nodes ( `HiddenNeighborsFeedbackPart`).

org.eclipse.gef.zest.fx.policies: This package provides policy implementations to support hiding/unhiding of nodes and related edges ( `HidePolicy`, `ShowHiddenNeighborsPolicy`), as well as semantic zooming ( `SemanticZoomPolicy`), and label transformation.
org.eclipse.gef.zest.fx.providers
org.eclipse.gef.zest.fx.ui: This package provides a Guice Module ( `ZestFxUiModule`) with bindings for Zest.FX.UI.
org.eclipse.gef.zest.fx.ui.parts: This package provides a `ViewPart` ( `ZestFxUiView`) to render graphs.