gtk.TreeDragSource
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## gtk.TreeDragSource

gtk.TreeDragSource — an interface that manages the source data transfer for a `gtk.TreeView` drag and drop operation

## Synopsis

    class gtk.TreeDragSource(gobject.GInterface):
        def row_draggable(path)
        def drag_data_delete(path)
        def drag_data_get(path, selection_data)

## Description

A `gtk.TreeDragSource` is an interface that provides for the management of the source data for a `gtk.TreeView` drag and drop operation.

## Methods

### gtk.TreeDragSource.row_draggable

        def row_draggable(path)

`path` : | the row from which the user is initiating a drag
Returns : | `TRUE` if the row can be dragged

The `row_draggable`() method asks the `gtk.TreeDragSource` if the row specified by `path` can be used as the source of a DND operation. If the `gtk.TreeDragSource` doesn't implement this interface, the row is assumed draggable.

### gtk.TreeDragSource.drag_data_delete

        def drag_data_delete(path)

`path` : | the row that was being dragged
Returns : | `TRUE` if the row was successfully deleted

The `drag_data_delete`() method asks the `gtk.TreeDragSource` to delete the row specified by `path`, because it was moved somewhere else via drag-and-drop. This method returns `FALSE` if the deletion fails because `path` no longer exists, or for some other model-specific reason.

### gtk.TreeDragSource.drag_data_get

        def drag_data_get(path, selection_data)

`path` : | the row that was dragged
`selection_data` : | a `gtk.SelectionData` to fill with data from the dragged row
Returns : | `TRUE` if data of the required type was provided

The `drag_data_get`() method asks the `gtk.TreeDragSource` to fill in the selection data object specified by `selection_data` with a representation of the row specified by `path`. The `selection_data` target attribute gives the required type of the data.

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