QQuickTableView: add support for hiding rows and columns

This patch will add support for hiding rows and columns to TableView.
You can now hide a column by returning 0 width for it from the
columnWidthProvider. The same can be done to hide a row (by using the
rowHeightProvider). If you return NaN or negative number, TableView
will fall back to calculate the size of the column/row by looking at
the delegate items, like before. This to make it possible to hide
some rows/columns, without having to calculate and return the heights
and widths of the other rows and columns.

[ChangeLog][QtQuick][TableView] Added support for hiding rows and columns
by setting their size to 0 from the columnsWidthProvider/rowHeightProvider.

Change-Id: If9e1a8db91e257d36cb2787bab4856e6201456ac
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 2 insertions, 4 deletions

diff --git a/tests/auto/quick/qquicktableview/data/usefaultyrowcolumnprovider.qml b/tests/auto/quick/qquicktableview/data/usefaultyrowcolumnprovider.qml
index 32d1fc9d0d..1e35d65bcd 100644
--- a/tests/auto/quick/qquicktableview/data/usefaultyrowcolumnprovider.qml
+++ b/tests/auto/quick/qquicktableview/data/usefaultyrowcolumnprovider.qml
@@ -56,16 +56,14 @@ Item {
         delegate: tableViewDelegate
         columnSpacing: 1
         rowSpacing: 1
-        columnWidthProvider: function(column) { }
-        rowHeightProvider: function(row) { return 0 }
+        columnWidthProvider: function(column) { return "notAValidValue" }
+        rowHeightProvider: function(row) { return "notAValidValue" }
     }
 
     Component {
         id: tableViewDelegate
         Rectangle {
             objectName: "tableViewDelegate"
-            implicitWidth: 20
-            implicitHeight: 20
             color: "lightgray"
             border.width: 1
             Text {