Unsolved [QML] GridView scroll + Drag&Drop

[GGAllin]

Hi everyone!

I need to scroll autimatically my gridview during the "onEntered" event,
because my gridview contains about 600 items, and it's so hard to drag on top of the view the last item (for example)
So i need a way to do this!
here's my code

ScrollView{
                    id:scrollViewer
                    anchors.fill: parent

                    GridView {

                        property bool firstVisualIndexEnableChange: (bookListModel.mainFilter === "all")
                        id: gridroot
                        clip: true
//                        highlightRangeMode: ListView.StrictlyEnforceRange
//                        onCurrentIndexChanged: {

//                            //if(firstVisualIndexEnableChange)
//                                //bookListModel.firstVisibleIndex = currentIndex
//                        }



                        onContentYChanged: {
                            console.log("contentY changed "+ contentY )
                        }

                        snapMode: GridView.SnapOneRow

                        anchors.fill: parent
                        cellWidth: 320; cellHeight: 220
                        displaced: Transition {
                            NumberAnimation { properties: "x,y"; easing.type: Easing.OutQuad }
                        }
                        model: DelegateModel {
                            id: visualModel

                            model: bookListModel
                            delegate: MouseArea {
                                id: delegateRoot
                                width: gridroot.cellWidth; height: gridroot.cellHeight
                                property int visualIndex: DelegateModel.itemsIndex
                                drag.target: icon
                                Rectangle {
                                    id: icon
                                    width: 300; height: 200
                                    border.color: "black"
                                    border.width: 8
                                    anchors {
                                        horizontalCenter: parent.horizontalCenter;
                                        verticalCenter: parent.verticalCenter
                                    }
                                    color: "white" //model.color
                                    Drag.active: bookListModel.booksOrderEnabled? delegateRoot.drag.active : false
                                    Drag.source: delegateRoot
                                    Drag.hotSpot.x: 36
                                    Drag.hotSpot.y: 36
                                    states: [
                                        State {
                                            when: icon.Drag.active
                                            ParentChange {
                                                target: icon
                                                parent: gridroot
                                            }

                                            AnchorChanges {
                                                target: icon;
                                                anchors.horizontalCenter: undefined;
                                                anchors.verticalCenter: undefined
                                            }
                                        }
                                    ]
                                    Rectangle{
                                        width:150
                                        height:200
                                        MouseArea{
                                            cursorShape: "PointingHandCursor"
                                            width:parent.width
                                            height: parent.height
                                            onClicked: {
                                                console.log("BookSelected: "+ isbn + coverImg.source)
                                                bookShelfcontroller.bookClicked(isbn)
                                            }
                                            Image{
                                                id:coverImg
                                                source: coverAbsolutePath //"/images/placeholder_cover.png"
                                            }
                                        }
                                    }
                                    Column{
                                        x:150
                                        width:150
                                        Rectangle{
                                            y: 10
                                            width: 150
                                            height: 160
                                            Rectangle{
                                                anchors.fill: parent
                                                anchors.margins: 10
                                                Text {
                                                    id: bookAuthor
                                                    text: author
                                                    font.family: avenirCn.name
                                                    font.pixelSize: 13
                                                    lineHeightMode: Text.FixedHeight
                                                    lineHeight: 20
                                                    wrapMode: Text.Wrap
                                                    width: parent.width
                                                    maximumLineCount: 3
                                                    anchors.top: parent.top
                                                }
                                                Text {
                                                    id:bookTitle;
                                                    text: title
                                                    font.family: avenirBoldCn.name
                                                    font.pixelSize: 13
                                                    lineHeightMode: Text.FixedHeight
                                                    lineHeight: 20
                                                    wrapMode: Text.Wrap
                                                    width: parent.width
                                                    height: parent.height - bookAuthor.height
                                                    elide: Text.ElideRight
                                                    anchors.top: bookAuthor.bottom
                                                }
                                            }
                                        }

                                        Rectangle{
                                            width: 150
                                            height: 40

                                            BookButton {
                                                id:downloadButton
                                                visible: downloaded
                                                anchors.right: markerButton.left
                                            }
                                            BookButton {
                                                id:markerButton
                                                imgWidth: 16
                                                source: "icons/marker.svg"
                                                selected: last_viewed
                                                visible: lastVisitedPage != ""
                                                anchors.right: favoriteButton.left
                                                cursorShape: "PointingHandCursor"
                                                onClicked: bookShelfcontroller.onLastPageVisitedClicked(lastVisitedPage,isbn)
                                            }
                                            BookButton {
                                                id:favoriteButton
                                                anchors.right: parent.right
                                                selected: favorite
                                                source: "icons/favorites-xlarge.svg"
                                                cursorShape: "PointingHandCursor"
                                                onClicked:{
                                                    favorite = !favorite;
                                                    bumbumcha()
                                                }
                                            }
                                        }
                                    }
                                }

                                DropArea {
                                    anchors { fill: parent; margins: 15 }
                                    onEntered:{
                                        if(bookListModel.booksOrderEnabled){
                                            bookListModel.move(drag.source.visualIndex, delegateRoot.visualIndex)
                                            visualModel.items.move(drag.source.visualIndex, delegateRoot.visualIndex)
                                        }
                                    }
                                }
                            }
                        }
                    }
                }    

Thanks in advanced
GG.