Unsolved Enter manually in TableView

[alemio]

Hi, I would to enter and edit the first cell of the tableview pressing the buttonEdit and then edit the next cell pressing buttonEditNext.

I don't want to use mouse click.

How can I do?

import QtQuick 2.6
import QtQuick.Controls 1.5

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Test TableView")
    toolBar: ToolBar {
        height: 50
        Rectangle {
            id: rectangle
            anchors.fill: parent

            Button {
                id: buttonEdit
                x: 18
                y: 8
                width: 100
                height: 27
                text: qsTr("Edit")
                onClicked: {
                    //TODO Go to edit first cell
                }
            }

            Button {
                id: buttonEditNext
                x: 118
                y: 8
                width: 100
                height: 27
                text: qsTr("Edit next")
                onClicked: {
                    //TODO Go to edit next cell
                }
            }
        }
    }
    TableView {
        id: tableView
        anchors.fill: parent
         focus: true

        TableViewColumn {
            id: titleColumn
            title: "Title"
            role: "title"
            movable: false
            resizable: false
            width: tableView.viewport.width - authorColumn.width
            delegate: TextInput {
                anchors.fill: parent
                id: textInputTitle
                text: sourceModel.get(styleData.row).title
            }
        }

        TableViewColumn {
            id: authorColumn
            title: "Author"
            role: "author"
            movable: false
            resizable: false
            width: tableView.viewport.width / 3
            delegate: TextInput {
                anchors.fill: parent
                id: textInputAuthor
                text: sourceModel.get(styleData.row).author
            }
        }

        model: sourceModel

        ListModel {
            id: sourceModel
            ListElement {
                title: "Moby-Dick"
                author: "Herman Melville"
            }
            ListElement {
                title: "The Adventures of Tom Sawyer"
                author: "Mark Twain"
            }
        }
    }
}