[Development] Problem with QtQuick.Controls, style.panel <-> custom Control children stack order

[Tomasz Olszak]

I have encountered some problem related to
Control.qml/AbstractCheckable.qml internals.
Example case:
CheckBoxStyle has indicator which can interact with user (has mouse area).

Current situation:
We are not able to handle such case, even by reimplementing panel because:
* panelLoader(from Control.qml) and MouseArea (from AbstractCheckable) are
on the same hierarchy level
* MouseArea(from AbstractCheckable) is created after panelLoader - is
 higher on stack because z's properties are the same
* MouseArea (from AbstractCheckable) covers all other MouseArea's from
style.panel

I have analysed this case and don't see any obvious solution. Below is some
informal draft of object visibility stack. We see that MouseArea from
AbstractCheckable covers Items created in CheckBoxStyle (is it a bug? )

    Control {

        id:root

        Loader {

            id: panelLoaded

            CheckBoxStyle {

                id:checkBoxStyle

                Panel {

                                    }

            }

        }

        AbstractCheckable {

            MouseArea {

                            }

            CheckBox {

                UserCheckBox {

                    //some user properties and items

                }

            }

        }

    }


I think hierarchy should look like:

    Control {

        id:root

        AbstractCheckable {

            MouseArea {

                            }

            CheckBox {

                Loader {

                    id: panelLoaded

                    CheckBoxStyle {

                        id:checkBoxStyle

                        Panel {

                        }

                    }

                }

                                UserCheckBox {

                    //some user properties and items

                }

            }

        }

    }


So content of CheckBoxStyle should be above all default mechanisms and
below user items in stack order.

What do you think?

-- 
Pozdrawiam/Regards,
Tomasz Olszak
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