classafReflux::ResourceTree

sys::Obj
  afReflux::ResourceTree

(Widget) - A tree widget that displays Resource hierarchies. ResourceTree is a wrapper around the FWT Tree widget with the following enhancements:

  • A Resource specific tree model.
  • Hassle free refreshResource() and showResource() methods that just work.
  • Event data return the Resource that's been actioned.

Because ResourceTree does not extend fwt:Widget it can not be added directly. Instead, add the tree field which returns the wrapped FWT Tree instance.

tree := ResourceTree(reflux)
ContentPane() {
    it.content = tree.tree
}
make

Source

new make(Reflux reflux, |This? in := null)

Creates a ResourceTree. Use the ctor to pass in a tree:

ResourceTree(reflux) {
    it.tree = Tree {
        it.border = false
    }
    it.roots = myRoots
    it.model = MyModel()
}

Note that, as shown above, the tree must be set before the model and / or roots.

model

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ResourceTreeModel model := ResourceTreeModelImpl.<ctor>()

The model that customises the look of the tree. Leave as is for default behaviour.

onAction

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EventListeners onAction()

Callback when node is double clicked or Return/Enter key is pressed.

Event id fired:

  • EventId.modified

Event fields:

  • Event.data: the Resource actioned
onPopup

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EventListeners onPopup()

Callback when user invokes a right click popup action. If the callback wishes to display a popup, then set the Event.popup field with menu to open. If multiple callbacks are installed, the first one to return a nonnull popup consumes the event.

Event id fired:

  • EventId.popup

Event fields:

  • Event.data: the Resource selected, or null if this is a background popup.
  • Event.pos: the mouse position of the popup.
onSelect

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EventListeners onSelect()

Callback when selected nodes change.

Event id fired:

  • EventId.select

Event fields:

  • Event.data: the Resource selected
refreshAll

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Void refreshAll()

Update the entire tree's contents from the model.

refreshResource

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Void refreshResource(Resource resource)

Updates the specified resource in the model before showing it.

refreshResourceUri

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Void refreshResourceUri(Uri resourceUri)

Updates the specified resource in the model before showing it.

resourceAt

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Resource? resourceAt(Point pos)

Return the Resource at the specified coordinate relative to this widget. Return null if there is no Resource at given coordinate.

roots

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Resource[] roots := Resource#.emptyList

The root resources of the tree.

selected

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Resource[] selected

Get and set the selected nodes.

Convenience for tree.selected()

showResource

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Void showResource(Resource resource)

Scrolls and expands the tree until the Resource is visible. This also selects the resource in the tree.

showResourceUri

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Void showResourceUri(Uri resourceUri)

Scrolls and expands the tree until the Resource is visible. This also selects the resource in the tree.

tree

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Tree tree

The underlying FWT Tree widget.