Add a changed() signal to QValidator.

This provides a general notification of changes that may change the
validity of previously validated input.

Change-Id: I5ec6f127af60fdca68605fee903a08758bc01360
Reviewed-by: Jonas Gastal <jgastal@profusion.mobi>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

5 files changed, 76 insertions, 1 deletions

diff --git a/src/gui/util/qvalidator.cpp b/src/gui/util/qvalidator.cpp
index b4478cfaa5..d806a18b64 100644
--- a/src/gui/util/qvalidator.cpp
+++ b/src/gui/util/qvalidator.cpp
@@ -131,6 +131,12 @@ QT_BEGIN_NAMESPACE
     \omitvalue Valid
 */
 
+/*!
+    \fn void QValidator::changed()
+
+    This signal is emitted when any property that may affect the validity of
+    a string has changed.
+*/
 
 /*!
     \fn void QIntValidator::topChanged(int top)
@@ -247,7 +253,10 @@ QLocale QValidator::locale() const
 void QValidator::setLocale(const QLocale &locale)
 {
     Q_D(QValidator);
-    d->locale = locale;
+    if (d->locale != locale) {
+        d->locale = locale;
+        emit changed();
+    }
 }
 
 /*!
@@ -452,15 +461,21 @@ void QIntValidator::fixup(QString &input) const
 
 void QIntValidator::setRange(int bottom, int top)
 {
+    bool rangeChanged = false;
     if (b != bottom) {
         b = bottom;
+        rangeChanged = true;
         emit bottomChanged(b);
     }
 
     if (t != top) {
         t = top;
+        rangeChanged = true;
         emit topChanged(t);
     }
+
+    if (rangeChanged)
+        emit changed();
 }
 
 
@@ -697,20 +712,26 @@ QValidator::State QDoubleValidatorPrivate::validateWithLocale(QString &input, QL
 
 void QDoubleValidator::setRange(double minimum, double maximum, int decimals)
 {
+    bool rangeChanged = false;
     if (b != minimum) {
         b = minimum;
+        rangeChanged = true;
         emit bottomChanged(b);
     }
 
     if (t != maximum) {
         t = maximum;
+        rangeChanged = true;
         emit topChanged(t);
     }
 
     if (dec != decimals) {
         dec = decimals;
+        rangeChanged = true;
         emit decimalsChanged(dec);
     }
+    if (rangeChanged)
+        emit changed();
 }
 
 /*!
@@ -772,6 +793,7 @@ void QDoubleValidator::setNotation(Notation newNotation)
     if (d->notation != newNotation) {
         d->notation = newNotation;
         emit notationChanged(d->notation);
+        emit changed();
     }
 }
 
@@ -888,6 +910,7 @@ void QRegExpValidator::setRegExp(const QRegExp& rx)
     if (r != rx) {
         r = rx;
         emit regExpChanged(r);
+        emit changed();
     }
 }
 
diff --git a/src/gui/util/qvalidator.h b/src/gui/util/qvalidator.h
index 0ae0e52833..a5f6beec55 100644
--- a/src/gui/util/qvalidator.h
+++ b/src/gui/util/qvalidator.h
@@ -76,6 +76,9 @@ public:
     virtual State validate(QString &, int &) const = 0;
     virtual void fixup(QString &) const;
 
+Q_SIGNALS:
+    void changed();
+
 protected:
     QValidator(QObjectPrivate &d, QObject *parent);
     QValidator(QValidatorPrivate &d, QObject *parent);
diff --git a/tests/auto/widgets/widgets/qdoublevalidator/tst_qdoublevalidator.cpp b/tests/auto/widgets/widgets/qdoublevalidator/tst_qdoublevalidator.cpp
index 743955eee3..d503e2e84f 100644
--- a/tests/auto/widgets/widgets/qdoublevalidator/tst_qdoublevalidator.cpp
+++ b/tests/auto/widgets/widgets/qdoublevalidator/tst_qdoublevalidator.cpp
@@ -247,25 +247,31 @@ void tst_QDoubleValidator::validate()
 }
 void tst_QDoubleValidator::notifySignals()
 {
+    QLocale::setDefault(QLocale("C"));
+
     QDoubleValidator dv(0.1, 0.9, 10, 0);
     QSignalSpy topSpy(&dv, SIGNAL(topChanged(double)));
     QSignalSpy bottomSpy(&dv, SIGNAL(bottomChanged(double)));
     QSignalSpy decSpy(&dv, SIGNAL(decimalsChanged(int)));
+    QSignalSpy changedSpy(&dv, SIGNAL(changed()));
 
     qRegisterMetaType<QDoubleValidator::Notation>("QDoubleValidator::Notation");
     QSignalSpy notSpy(&dv, SIGNAL(notationChanged(QDoubleValidator::Notation)));
 
     dv.setTop(0.8);
     QCOMPARE(topSpy.count(), 1);
+    QCOMPARE(changedSpy.count(), 1);
     QVERIFY(dv.top() == 0.8);
     dv.setBottom(0.2);
     QCOMPARE(bottomSpy.count(), 1);
+    QCOMPARE(changedSpy.count(), 2);
     QVERIFY(dv.bottom() == 0.2);
 
     dv.setRange(0.2, 0.7);
     QCOMPARE(topSpy.count(), 2);
     QCOMPARE(bottomSpy.count(), 1);
     QCOMPARE(decSpy.count(), 1);
+    QCOMPARE(changedSpy.count(), 3);
     QVERIFY(dv.bottom() == 0.2);
     QVERIFY(dv.top() == 0.7);
     QVERIFY(dv.decimals() == 0.);
@@ -273,6 +279,7 @@ void tst_QDoubleValidator::notifySignals()
     dv.setRange(0.3, 0.7);
     QCOMPARE(topSpy.count(), 2);
     QCOMPARE(bottomSpy.count(), 2);
+    QCOMPARE(changedSpy.count(), 4);
     QVERIFY(dv.bottom() == 0.3);
     QVERIFY(dv.top() == 0.7);
     QVERIFY(dv.decimals() == 0.);
@@ -280,12 +287,14 @@ void tst_QDoubleValidator::notifySignals()
     dv.setRange(0.4, 0.6);
     QCOMPARE(topSpy.count(), 3);
     QCOMPARE(bottomSpy.count(), 3);
+    QCOMPARE(changedSpy.count(), 5);
     QVERIFY(dv.bottom() == 0.4);
     QVERIFY(dv.top() == 0.6);
     QVERIFY(dv.decimals() == 0.);
 
     dv.setDecimals(10);
     QCOMPARE(decSpy.count(), 2);
+    QCOMPARE(changedSpy.count(), 6);
     QVERIFY(dv.decimals() == 10.);
 
 
@@ -293,13 +302,31 @@ void tst_QDoubleValidator::notifySignals()
     QCOMPARE(topSpy.count(), 3);
     QCOMPARE(bottomSpy.count(), 3);
     QCOMPARE(decSpy.count(), 3);
+    QCOMPARE(changedSpy.count(), 7);
     QVERIFY(dv.bottom() == 0.4);
     QVERIFY(dv.top() == 0.6);
     QVERIFY(dv.decimals() == 100.);
 
     dv.setNotation(QDoubleValidator::StandardNotation);
     QCOMPARE(notSpy.count(), 1);
+    QCOMPARE(changedSpy.count(), 8);
     QVERIFY(dv.notation() == QDoubleValidator::StandardNotation);
+
+    dv.setRange(dv.bottom(), dv.top(), dv.decimals());
+    QCOMPARE(topSpy.count(), 3);
+    QCOMPARE(bottomSpy.count(), 3);
+    QCOMPARE(decSpy.count(), 3);
+    QCOMPARE(changedSpy.count(), 8);
+
+    dv.setNotation(dv.notation());
+    QCOMPARE(notSpy.count(), 1);
+    QCOMPARE(changedSpy.count(), 8);
+
+    dv.setLocale(QLocale("C"));
+    QCOMPARE(changedSpy.count(), 8);
+
+    dv.setLocale(QLocale("en"));
+    QCOMPARE(changedSpy.count(), 9);
 }
 
 void tst_QDoubleValidator::validateIntEquiv_data()
diff --git a/tests/auto/widgets/widgets/qintvalidator/tst_qintvalidator.cpp b/tests/auto/widgets/widgets/qintvalidator/tst_qintvalidator.cpp
index 1094f1a1b5..27ded409a5 100644
--- a/tests/auto/widgets/widgets/qintvalidator/tst_qintvalidator.cpp
+++ b/tests/auto/widgets/widgets/qintvalidator/tst_qintvalidator.cpp
@@ -231,33 +231,53 @@ void tst_QIntValidator::validate()
 
 void tst_QIntValidator::notifySignals()
 {
+    QLocale::setDefault(QLocale("C"));
+
     QIntValidator iv(0, 10, 0);
     QSignalSpy topSpy(&iv, SIGNAL(topChanged(int)));
     QSignalSpy bottomSpy(&iv, SIGNAL(bottomChanged(int)));
+    QSignalSpy changedSpy(&iv, SIGNAL(changed()));
+
     iv.setTop(9);
     QCOMPARE(topSpy.count(), 1);
+    QCOMPARE(changedSpy.count(), 1);
     QVERIFY(iv.top() == 9);
     iv.setBottom(1);
     QCOMPARE(bottomSpy.count(), 1);
+    QCOMPARE(changedSpy.count(), 2);
     QVERIFY(iv.bottom() == 1);
 
     iv.setRange(1, 8);
     QCOMPARE(topSpy.count(), 2);
     QCOMPARE(bottomSpy.count(), 1);
+    QCOMPARE(changedSpy.count(), 3);
     QVERIFY(iv.top() == 8);
     QVERIFY(iv.bottom() == 1);
 
     iv.setRange(2, 8);
     QCOMPARE(topSpy.count(), 2);
     QCOMPARE(bottomSpy.count(), 2);
+    QCOMPARE(changedSpy.count(), 4);
     QVERIFY(iv.top() == 8);
     QVERIFY(iv.bottom() == 2);
 
     iv.setRange(3, 7);
     QCOMPARE(topSpy.count(), 3);
     QCOMPARE(bottomSpy.count(), 3);
+    QCOMPARE(changedSpy.count(), 5);
     QVERIFY(iv.top() == 7);
     QVERIFY(iv.bottom() == 3);
+
+    iv.setRange(3, 7);
+    QCOMPARE(topSpy.count(), 3);
+    QCOMPARE(bottomSpy.count(), 3);
+    QCOMPARE(changedSpy.count(), 5);
+
+    iv.setLocale(QLocale("C"));
+    QCOMPARE(changedSpy.count(), 5);
+
+    iv.setLocale(QLocale("en"));
+    QCOMPARE(changedSpy.count(), 6);
 }
 
 QTEST_MAIN(tst_QIntValidator)
diff --git a/tests/auto/widgets/widgets/qregexpvalidator/tst_qregexpvalidator.cpp b/tests/auto/widgets/widgets/qregexpvalidator/tst_qregexpvalidator.cpp
index 6fcf066a0f..ce072af45a 100644
--- a/tests/auto/widgets/widgets/qregexpvalidator/tst_qregexpvalidator.cpp
+++ b/tests/auto/widgets/widgets/qregexpvalidator/tst_qregexpvalidator.cpp
@@ -113,11 +113,13 @@ void tst_QRegExpValidator::validate()
 
     QRegExpValidator rv( 0 );
     QSignalSpy spy(&rv, SIGNAL(regExpChanged(const QRegExp&)));
+    QSignalSpy changedSpy(&rv, SIGNAL(changed()));
 
     rv.setRegExp( QRegExp( rx ) );
     int dummy;
     QCOMPARE( (int)rv.validate( value, dummy ), state );
     QCOMPARE(spy.count(), 1);
+    QCOMPARE(changedSpy.count(), 1);
 }
 
 QTEST_MAIN(tst_QRegExpValidator)