Hide non-existent card values in infowidget and cardframe (#3239)

cockatrice/src/cardinfotext.cpp

@@ -54,28 +54,78 @@ CardInfoText::CardInfoText(QWidget *parent) : QFrame(parent), info(nullptr)
 
     retranslateUi();
 }
-
+// Reset every label which is optionally hidden
+void CardInfoText::resetLabels()
+{
+    nameLabel1->show();
+    nameLabel2->show();
+    manacostLabel1->show();
+    manacostLabel2->show();
+    colorLabel1->show();
+    colorLabel2->show();
+    cardtypeLabel1->show();
+    cardtypeLabel2->show();
+    powtoughLabel1->show();
+    powtoughLabel2->show();
+    loyaltyLabel1->show();
+    loyaltyLabel2->show();
+    textLabel->show();
+}
 void CardInfoText::setCard(CardInfoPtr card)
 {
     if (card) {
+        resetLabels();
         nameLabel2->setText(card->getName());
+        if (!card->getManaCost().isEmpty()) {
             manacostLabel2->setText(card->getManaCost());
+        } else {
+            manacostLabel1->hide();
+            manacostLabel2->hide();
+        }
+        if (!card->getColors().isEmpty()) {
             colorLabel2->setText(card->getColors().join(""));
+        } else {
+            colorLabel2->setText("Colorless");
+        }
         cardtypeLabel2->setText(card->getCardType());
+        if (!card->getPowTough().isEmpty()) {
             powtoughLabel2->setText(card->getPowTough());
+        } else {
+            powtoughLabel1->hide();
+            powtoughLabel2->hide();
+        }
+        if (!card->getLoyalty().isEmpty()) {
             loyaltyLabel2->setText(card->getLoyalty());
+        } else {
+            loyaltyLabel1->hide();
+            loyaltyLabel2->hide();
+        }
         textLabel->setText(card->getText());
     } else {
-        nameLabel2->setText("");
+        nameLabel1->hide();
-        manacostLabel2->setText("");
+        nameLabel2->hide();
-        colorLabel2->setText("");
+        manacostLabel1->hide();
-        cardtypeLabel2->setText("");
+        manacostLabel2->hide();
-        powtoughLabel2->setText("");
+        colorLabel1->hide();
-        loyaltyLabel2->setText("");
+        colorLabel2->hide();
-        textLabel->setText("");
+        cardtypeLabel1->hide();
+        cardtypeLabel2->hide();
+        powtoughLabel1->hide();
+        powtoughLabel2->hide();
+        loyaltyLabel1->hide();
+        loyaltyLabel2->hide();
+        textLabel->hide();
     }
 }
 
+void CardInfoText::setInvalidCardName(const QString &cardName)
+{
+    nameLabel1->setText(tr("Unknown card:"));
+    nameLabel1->show();
+    nameLabel2->setText(cardName);
+    nameLabel2->show();
+}
+
 void CardInfoText::retranslateUi()
 {
     nameLabel1->setText(tr("Name:"));

cockatrice/src/cardinfotext.h

@@ -22,9 +22,12 @@ private:
 
     CardInfoPtr info;
 
+    void resetLabels();
+
 public:
     CardInfoText(QWidget *parent = 0);
     void retranslateUi();
+    void setInvalidCardName(const QString &cardName);
 
 public slots:
     void setCard(CardInfoPtr card);

cockatrice/src/cardinfowidget.cpp

@@ -52,6 +52,8 @@ void CardInfoWidget::setCard(CardInfoPtr card)
 void CardInfoWidget::setCard(const QString &cardName)
 {
     setCard(db->getCardBySimpleName(cardName));
+    if (!info)
+        text->setInvalidCardName(cardName);
 }
 
 void CardInfoWidget::setCard(AbstractCardItem *card)