package foldertree

open class FolderTreeBehaviour(

    val form : FolderTreeForm

) : TreeBehaviour( form.folder.value.name, Context( Context.FOLDER, form.folder.value ) ), Promptable {

    constructor( folder : File ) : this( FolderTreeForm().folder(folder) )

    init {
        description = form.folder.value.path
        iconName = "tree"

        form.showHiddenFolders.listen( this:>refreshRoot )
        form.showHiddenFiles.listen( this:>refreshRoot )
        form.noFiles.listen( this:>refreshRoot )
        form.folder.listen( this:>refreshRoot )
    }
    
    // ==== Features ====

    val refresh = Action( "Refresh", this:>refresh )
        .shortcut( Key.F5.noMods() ).icon( "refresh" )

    override meth toolbar() = listOf<Feature> (
        form.showHiddenFiles, form.showHiddenFolders,
        form.noFiles,
        spacer,
        refresh
    )

    override meth promptForm() = form

    // Function Callbacks

    // Refresh

    override meth attached( container : Container ) {
        super.attached( container )
        
        refresh()
    }

    meth refreshRoot() {
        (root as FolderTreeItem).refreshRecursively()
    }

    meth refresh() {
        // Used to re-select the correct item after re-attaching/refreshing.
        //val oldSelectedRow = selectedRow as? ListFolderRow
        //val oldSelectedFile = if (oldSelectedRow == null) null else oldSelectedRow.file

        if ( form.validate() != null ) return

        root = FolderTreeItem( form.folder.value, form )
        root.expanded = true
        focus()
    }

}