Add a helper for decorating a button according to compliance

GnuPG-bug-id: 6073

src/ui/newkeyapprovaldialog.cpp

@@ -852,21 +852,12 @@ public:
             }
         }
 
+        DeVSCompliance::decorate(mOkButton, de_vs);
         if (de_vs) {
-            mOkButton->setIcon(QIcon::fromTheme(QStringLiteral("security-high")));
-            if (!SystemInfo::isHighContrastModeActive()) {
-                mOkButton->setStyleSheet(QStringLiteral("background-color: ")
-                                         + KColorScheme(QPalette::Active, KColorScheme::View).background(KColorScheme::PositiveBackground).color().name());
-            }
             mComplianceLbl->setText(i18nc("%1 is a placeholder for the name of a compliance mode. E.g. NATO RESTRICTED compliant or VS-NfD compliant",
                                           "%1 communication possible.",
                                           Formatting::deVsString()));
         } else {
-            mOkButton->setIcon(QIcon::fromTheme(QStringLiteral("security-medium")));
-            if (!SystemInfo::isHighContrastModeActive()) {
-                mOkButton->setStyleSheet(QStringLiteral("background-color: ")
-                                         + KColorScheme(QPalette::Active, KColorScheme::View).background(KColorScheme::NegativeBackground).color().name());
-            }
             mComplianceLbl->setText(i18nc("%1 is a placeholder for the name of a compliance mode. E.g. NATO RESTRICTED compliant or VS-NfD compliant",
                                           "%1 communication not possible.",
                                           Formatting::deVsString()));

src/utils/compliance.cpp

@@ -14,6 +14,11 @@
 
 #include "cryptoconfig.h"
 #include "gnupg.h"
+#include "systeminfo.h"
+
+#include <KColorScheme>
+
+#include <QPushButton>
 
 bool Kleo::DeVSCompliance::isActive()
 {
@@ -36,3 +41,28 @@ bool Kleo::DeVSCompliance::isCompliant()
     }
     return getCryptoConfigIntValue("gpg", "compliance_de_vs", 0) != 0;
 }
+
+void Kleo::DeVSCompliance::decorate(QPushButton *button)
+{
+    decorate(button, isCompliant());
+}
+
+void Kleo::DeVSCompliance::decorate(QPushButton *button, bool compliant)
+{
+    if (!button) {
+        return;
+    }
+    if (compliant) {
+        button->setIcon(QIcon::fromTheme(QStringLiteral("security-high")));
+        if (!SystemInfo::isHighContrastModeActive()) {
+            const auto bgColor = KColorScheme(QPalette::Active, KColorScheme::View).background(KColorScheme::PositiveBackground).color().name();
+            button->setStyleSheet(QStringLiteral("QPushButton { background-color: %1; };").arg(bgColor));
+        }
+    } else {
+        button->setIcon(QIcon::fromTheme(QStringLiteral("security-medium")));
+        if (!SystemInfo::isHighContrastModeActive()) {
+            const auto bgColor = KColorScheme(QPalette::Active, KColorScheme::View).background(KColorScheme::NegativeBackground).color().name();
+            button->setStyleSheet(QStringLiteral("QPushButton { background-color: %1; };").arg(bgColor));
+        }
+    }
+}

src/utils/compliance.h

@@ -12,6 +12,8 @@
 
 #include "kleo_export.h"
 
+class QPushButton;
+
 namespace Kleo::DeVSCompliance
 {
 
@@ -28,4 +30,20 @@ KLEO_EXPORT bool isActive();
  */
 KLEO_EXPORT bool isCompliant();
 
+/**
+ * \overload
+ *
+ * Sets the appropriate icon and, unless high-contrast mode is active, the
+ * appropriate background color of \p button depending on the state of
+ * compliance.
+ */
+KLEO_EXPORT void decorate(QPushButton *button);
+
+/**
+ * Sets the appropriate icon and, unless high-contrast mode is active, the
+ * appropriate background color of \p button depending on the value of
+ * \p compliant.
+ */
+KLEO_EXPORT void decorate(QPushButton *button, bool compliant);
+
 }