Controls focus handling is not consistent when using a mouse

Controls like ComboBox and CheckBox can get keyboard focus when the user navigate the UI using tab. However when the user clicks such a control, it does not get the keyboard focus.

The result is that the UI behavior is not standard and misleading.
For instance if the user as entered some text in a TextInput and the click on a CheckBox, he/she can expect to toggle the CheckBox state by pressing the space bar. However the focus is left to the TextInput which will add the spaces to its content.

Here is a code sample:

import QtQuick 2.4
import QtQuick.Controls 1.3

ApplicationWindow {
    width: 640
    height: 480
    visible: true

    Column {
        CheckBox {
            id: checkBox1
            text: qsTr("Check Box")
        }

        TextEdit {
            id: textEdit1
            text: qsTr("Text Edit")
            font.pixelSize: 12
        }
    }
}

To reproduce:

1. Click on textEdit1 as you were going to enter text.
2. Click on checkBox1 to change its state.
3. Even after checkBox1 state has been toggled, the text cursor is still visible in textEdit1
4. Press the space bar. A user would expect to toggle checkBox1, but the keyboard inputs are sent to textEdit1