From 42d681f9cfc984046a93b9efe19903d46ac68bb1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thorbj=C3=B8rn=20Lund=20Martsum?= <tmartsum@gmail.com>
Date: Mon, 3 Sep 2012 06:35:39 +0200
Subject: Add widget replace function to QLayout

Sometimes it is nice to be able to replace a widget in a layout.

Change-Id: I23a6a65e417e94d53bc48639503db1a142bc3f10
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>
---
 .../widgets/kernel/qformlayout/tst_qformlayout.cpp | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)

(limited to 'tests/auto/widgets/kernel/qformlayout/tst_qformlayout.cpp')

diff --git a/tests/auto/widgets/kernel/qformlayout/tst_qformlayout.cpp b/tests/auto/widgets/kernel/qformlayout/tst_qformlayout.cpp
index b970de8e87..135605f185 100644
--- a/tests/auto/widgets/kernel/qformlayout/tst_qformlayout.cpp
+++ b/tests/auto/widgets/kernel/qformlayout/tst_qformlayout.cpp
@@ -122,6 +122,7 @@ private slots:
     void itemAt();
     void takeAt();
     void layoutAlone();
+    void replaceWidget();
 /*
     void setGeometry(const QRect &rect);
     QSize minimumSize() const;
@@ -934,6 +935,54 @@ void tst_QFormLayout::taskQTBUG_27420_takeAtShouldUnparentLayout()
         QVERIFY(!inner.isNull());
 }
 
+void tst_QFormLayout::replaceWidget()
+{
+    QWidget w;
+    QFormLayout *layout = new QFormLayout();
+    w.setLayout(layout);
+    QLineEdit *edit1 = new QLineEdit();
+    QLineEdit *edit2 = new QLineEdit();
+    QLineEdit *edit3 = new QLineEdit();
+    QLabel *label1 = new QLabel();
+    QLabel *label2 = new QLabel();
+
+    layout->addRow("Label", edit1);
+    layout->addRow(label1, edit2);
+
+    // Verify controls not in layout
+    QCOMPARE(layout->indexOf(edit3), -1);
+    QCOMPARE(layout->indexOf(label2), -1);
+
+    // Verify controls in layout
+    int editIndex = layout->indexOf(edit1);
+    int labelIndex = layout->indexOf(label1);
+    QVERIFY(editIndex > 0);
+    QVERIFY(labelIndex > 0);
+    int rownum;
+    QFormLayout::ItemRole role;
+
+    // replace editor
+    layout->replaceWidget(edit1, edit3);
+    edit1->hide(); // Not strictly needed for the test, but for normal usage it is.
+    QCOMPARE(layout->indexOf(edit1), -1);
+    QCOMPARE(layout->indexOf(edit3), editIndex);
+    QCOMPARE(layout->indexOf(label1), labelIndex);
+    rownum = -1;
+    role = QFormLayout::SpanningRole;
+    layout->getWidgetPosition(edit3, &rownum, &role);
+    QCOMPARE(rownum, 0);
+    QCOMPARE(role, QFormLayout::FieldRole);
+
+    layout->replaceWidget(label1, label2);
+    label1->hide();
+    QCOMPARE(layout->indexOf(label1), -1);
+    QCOMPARE(layout->indexOf(label2), labelIndex);
+    layout->getWidgetPosition(label2, &rownum, &role);
+    QCOMPARE(rownum, 1);
+    QCOMPARE(role, QFormLayout::LabelRole);
+
+}
+
 QTEST_MAIN(tst_QFormLayout)
 
 #include "tst_qformlayout.moc"
-- 
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