QQuickTableView: add anchor check for delegate

If a delegate is using anchors, TableView will not be able
to layout the item. So issue a warning if that is the
case.

Change-Id: I358d981067c23fdab2fc486003afc8bd685f940d
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

2 files changed, 78 insertions, 0 deletions

diff --git a/tests/auto/quick/qquicktableview/data/delegatewithanchors.qml b/tests/auto/quick/qquicktableview/data/delegatewithanchors.qml
new file mode 100644
index 0000000000..0b549f09a4
--- /dev/null
+++ b/tests/auto/quick/qquicktableview/data/delegatewithanchors.qml
@@ -0,0 +1,65 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.12
+import QtQuick.Window 2.3
+
+Item {
+    width: 640
+    height: 450
+
+    property alias tableView: tableView
+
+    TableView {
+        id: tableView
+        width: 600
+        height: 400
+        delegate: tableViewDelegate
+    }
+
+    Component {
+        id: tableViewDelegate
+        Rectangle {
+            anchors.fill: parent
+            implicitWidth: 100
+            implicitHeight: 100
+        }
+    }
+
+}
diff --git a/tests/auto/quick/qquicktableview/tst_qquicktableview.cpp b/tests/auto/quick/qquicktableview/tst_qquicktableview.cpp
index 29eb61b7ad..4ba36cd687 100644
--- a/tests/auto/quick/qquicktableview/tst_qquicktableview.cpp
+++ b/tests/auto/quick/qquicktableview/tst_qquicktableview.cpp
@@ -93,6 +93,7 @@ private slots:
     void checkZeroSizedDelegate();
     void checkImplicitSizeDelegate();
     void checkColumnWidthWithoutProvider();
+    void checkDelegateWithAnchors();
     void checkColumnWidthProvider();
     void checkColumnWidthProviderInvalidReturnValues();
     void checkColumnWidthProviderNotCallable();
@@ -308,6 +309,18 @@ void tst_QQuickTableView::checkColumnWidthWithoutProvider()
     }
 }
 
+void tst_QQuickTableView::checkDelegateWithAnchors()
+{
+    // Checks that we issue a warning if the delegate has anchors
+    LOAD_TABLEVIEW("delegatewithanchors.qml");
+
+    QTest::ignoreMessage(QtWarningMsg, QRegularExpression(".*anchors"));
+
+    auto model = TestModelAsVariant(1, 1);
+    tableView->setModel(model);
+    WAIT_UNTIL_POLISHED;
+}
+
 void tst_QQuickTableView::checkColumnWidthProvider()
 {
     // Check that you can assign a function to the columnWidthProvider property, and