Fix a small bug

README.md

@@ -12,7 +12,7 @@ A GUI for [Proxmark3](https://github.com/Proxmark/proxmark3) client
 + Have a friendly UI to test Mifare cards
     + Support different card size(MINI, 1K, 2K, 4K)
     + Easy to edit Mifare data files
-    + Easy to read all blocks with well-designed read logic
+    + Easy to read all/selected blocks with well-designed read logic
     + Support binary(.bin .dump) files and text(.eml) files
     + Analyze Access Bits
     + Support Chinese Magic Card

module/mifare.cpp

@@ -833,23 +833,53 @@ void Mifare::data_syncWithKeyWidget(bool syncAll, int sector, KeyType keyType)
     ui->MF_keyWidget->blockSignals(false);
 }
 
-void Mifare::data_clearData()
+void Mifare::data_clearData(bool clearAll)
+{
+    if(clearAll)
     {
         dataList->clear();
-    for(int i = 0; i < cardType.block_size; i++)
-        dataList->append("");
     }
 
-void Mifare::data_clearKey()
+    int delta = cardType.block_size - dataList->length()  ;
+    if(delta >= 0)
+    {
+        for(int i = 0; i < delta; i++)
+            dataList->append("");
+    }
+    else if(delta < 0)
+    {
+        for(int i = 0; i < -delta; i++)
+
+            dataList->removeLast();
+    }
+}
+
+void Mifare::data_clearKey(bool clearAll)
+{
+    if(clearAll)
     {
         keyAList->clear();
         keyBList->clear();
-    for(int i = 0; i < cardType.sector_size; i++)
+    }
+
+    int delta = cardType.sector_size - keyAList->length()  ;
+    if(delta >= 0)
+    {
+        for(int i = 0; i < delta; i++)
         {
             keyAList->append("");
             keyBList->append("");
         }
     }
+    else if(delta < 0)
+    {
+        for(int i = 0; i < -delta; i++)
+        {
+            keyAList->removeLast();
+            keyBList->removeLast();
+        }
+    }
+}
 
 bool Mifare::data_isKeyValid(const QString &key)
 {
@@ -912,8 +942,8 @@ void Mifare::setCardType(int type)
             cardType = card_2k;
         else if(type == 4)
             cardType = card_4k;
-        data_clearKey();
+        data_clearKey(false);
-        data_clearData();
+        data_clearData(false);
     }
 }
 

module/mifare.h

@@ -46,11 +46,11 @@ public:
 
     struct CardType
     {
-        int type;
+        quint8 type;
-        int sector_size;
+        quint8 sector_size;
-        int block_size;
+        quint16 block_size;
-        int blk[40];
+        quint8 blk[40];
-        int blks[40];
+        quint8 blks[40];
     };
 
     enum AccessType
@@ -70,8 +70,8 @@ public:
     static const AccessType trailerReadCondition[8][3];
     static const AccessType trailerWriteCondition[8][3];
 
-    void data_clearData();
+    void data_clearData(bool clearAll = true);
-    void data_clearKey();
+    void data_clearKey(bool clearAll = true);
     static bool data_isKeyValid(const QString& key);
     static Mifare::DataType data_isDataValid(const QString& data);
     void data_syncWithDataWidget(bool syncAll = true, int block = 0);

ui/mainwindow.cpp

@@ -181,7 +181,7 @@ void MainWindow::MF_onTypeChanged(int id, bool st)
         int result;
         if(id > typeBtnGroup->checkedId()) // id is specified in uiInit() with a proper order, so I can compare the size by id.
         {
-            result = QMessageBox::question(this, tr("Info"), tr("When Changeing card type, the data and keys in this app will be cleard.") + "\n" + tr("Continue?"), QMessageBox::Yes | QMessageBox::No);
+            result = QMessageBox::question(this, tr("Info"), tr("Some of the data and key will be cleared.") + "\n" + tr("Continue?"), QMessageBox::Yes | QMessageBox::No);
         }
         else
         {
@@ -192,6 +192,8 @@ void MainWindow::MF_onTypeChanged(int id, bool st)
             qDebug() << "Yes";
             mifare->setCardType(typeBtnGroup->checkedId());
             MF_widgetReset();
+            mifare->data_syncWithDataWidget();
+            mifare->data_syncWithKeyWidget();
         }
         else
         {
@@ -698,6 +700,7 @@ void MainWindow::MF_widgetReset()
     ui->MF_dataWidget->setRowCount(blks);
 
     ui->MF_dataWidget->blockSignals(true);
+    ui->MF_keyWidget->blockSignals(true);
     ui->MF_selectAllBox->blockSignals(true);
 
     for(int i = 0; i < blks; i++)
@@ -720,6 +723,7 @@ void MainWindow::MF_widgetReset()
     ui->MF_selectAllBox->setCheckState(Qt::Checked);
 
     ui->MF_dataWidget->blockSignals(false);
+    ui->MF_keyWidget->blockSignals(false);
     ui->MF_selectAllBox->blockSignals(false);
 }
 // ************************************************
@@ -746,7 +750,7 @@ void MainWindow::uiInit()
     ui->MF_dataWidget->setHorizontalHeaderItem(1, new QTableWidgetItem(tr("Blk")));
     ui->MF_dataWidget->setHorizontalHeaderItem(2, new QTableWidgetItem(tr("Data")));
     ui->MF_dataWidget->verticalHeader()->setVisible(false);
-    ui->MF_dataWidget->setColumnWidth(0, 45);
+    ui->MF_dataWidget->setColumnWidth(0, 55);
     ui->MF_dataWidget->setColumnWidth(1, 55);
     ui->MF_dataWidget->setColumnWidth(2, 430);