setting arguments in reused QML file

[mzimmers]

Hi all -

I've looked through the docs, but didn't find quite what I wanted. I have a QML file (SortedTable.qml) that is used by several displays. I need to modify it so the parent can specify the widths of the columns.

Currently, the column widths are formatted like this:

 property int cellWidth: width / (viewModel.header().length + extraCols_)
 property real cellStretch0: cellWidth * 1.7
 property real cellStretch1: cellWidth * 0.4
 property real cellStretch2: cellWidth * 0.9
 property real cellStretch3: cellWidth
 property variant columnWidths: [cellStretch0, cellStretch1, cellStretch2, cellStretch3]

And the property columnWidths is used in various places in SortedTable.

I'd like to move the cellStretchN definitions out of SortedTable, into the parent files, but have a default value for them in SortedTable. I'm sure this can be done, but I need a pointer on how.

Thanks...

[LeLev]

hi @mzimmers
If i understand the question correctly, there is nothig special to do here, you can let whatever default value in Sorted Table.qml and then reassign that value when you create SortedTable components

[mzimmers]

@LeLev here's what I tried:

SortedTable.qml:

Item {
  id: root
  property int cellWidth: width / (viewModel.header().length + extraCols_)
  property real cellStretch0: cellWidth
  property real cellStretch1: cellWidth
  property real cellStretch2: cellWidth
  property real cellStretch3: cellWidth

and in the parent:

  SortedTable {
      property real cellStretch0: cellWidth * 1.7
      property real cellStretch1: cellWidth * 0.4
      property real cellStretch2: cellWidth * 0.9
      property real cellStretch3: cellWidth

but it doesn't "take" (the values in the parent aren't used).

[LeLev]

@mzimmers said in setting arguments in reused QML file:

SortedTable {
property real cellStretch0: cellWidth * 1.7

you are re-declaring the properties, you just need to assing the new values like this

SortedTable {
      cellStretch0: cellWidth * 1.7
     cellStretch1: cellWidth * 0.4

but i'm not sure columnWidths will be updated in the component, you might need to reassign it

[mzimmers]

@LeLev thank you! This works fine. And the array does indeed update -- I guess it's created on-the-fly when the screen is invoked.

Thanks again for the help.

[LeLev]

@mzimmers You're welcome :)
BTW "variant" qml type is obsolete. If possible, you should use "var" instead
see here https://doc.qt.io/qt-5/qml-variant.html