Mark Air/Water temp field red for wrong input.

As a warining for the user mark the field red.
If the user inputs invalid input that will be ignored
while parsing.
But with adding a one character error margin to prevent it from toggling
between Red and Yellow while editing existing values, for example "After
Deleting unit and last number after '.'"

Signed-off-by: Yousef Hamza <jo.adam.93@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

2 files changed, 30 insertions, 0 deletions

diff --git a/qt-ui/maintab.cpp b/qt-ui/maintab.cpp
index 227d89b58..594ac562a 100644
--- a/qt-ui/maintab.cpp
+++ b/qt-ui/maintab.cpp
@@ -881,14 +881,43 @@ void MainTab::on_airtemp_textChanged(const QString &text)
 {
 	EDIT_SELECTED_DIVES(select_dc(mydive)->airtemp.mkelvin = parseTemperatureToMkelvin(text));
 	markChangedWidget(ui.airtemp);
+	validate_temp_field(ui.airtemp, text);
 }
 
 void MainTab::on_watertemp_textChanged(const QString &text)
 {
 	EDIT_SELECTED_DIVES(select_dc(mydive)->watertemp.mkelvin = parseTemperatureToMkelvin(text));
 	markChangedWidget(ui.watertemp);
+	validate_temp_field(ui.watertemp, text);
 }
 
+void MainTab::validate_temp_field(QLineEdit *tempField,const QString &text)
+{
+	static bool missing_unit = false;
+	static bool missing_precision = false;
+	if (!text.contains(QRegExp("^[-+]{0,1}[0-9]+([,.][0-9]+){0,1}(°[CF]){0,1}$")) &&
+	    !text.isEmpty() &&
+	    !text.contains(QRegExp("^[-+]$"))) {
+		if (text.contains(QRegExp("^[-+]{0,1}[0-9]+([,.][0-9]+){0,1}(°)$")) && !missing_unit) {
+			if (!missing_unit) {
+				missing_unit = true;
+				return;
+			}
+		}
+		if (text.contains(QRegExp("^[-+]{0,1}[0-9]+([,.]){0,1}(°[CF]){0,1}$")) && !missing_precision) {
+			if (!missing_precision) {
+				missing_precision = true;
+				return;
+			}
+		}
+		QPalette p;
+		p.setBrush(QPalette::Base, QColor(Qt::red).lighter());
+		tempField->setPalette(p);
+	} else {
+		missing_unit = false;
+		missing_precision = false;
+	}
+}
 void MainTab::on_dateTimeEdit_dateTimeChanged(const QDateTime &datetime)
 {
 	QDateTime dateTimeUtc(datetime);
diff --git a/qt-ui/maintab.h b/qt-ui/maintab.h
index eee07a31d..4a0b0b9c5 100644
--- a/qt-ui/maintab.h
+++ b/qt-ui/maintab.h
@@ -81,6 +81,7 @@ slots:
 	void on_notes_textChanged();
 	void on_airtemp_textChanged(const QString &text);
 	void on_watertemp_textChanged(const QString &text);
+	void validate_temp_field(QLineEdit *tempField,const QString &text);
 	void on_dateTimeEdit_dateTimeChanged(const QDateTime &datetime);
 	void on_rating_valueChanged(int value);
 	void on_visibility_valueChanged(int value);