Support choose history command by Key_Up and Key_Down

ui/mainwindow.cpp

@@ -29,6 +29,7 @@ MainWindow::MainWindow(QWidget *parent):
     util = new Util(this);
     mifare = new Mifare(ui, util, this);
 
+    keyEventFilter = new MyEventFilter(QEvent::KeyRelease);
 }
 
 MainWindow::~MainWindow()
@@ -177,6 +178,36 @@ void MainWindow::sendMSG() // send command when pressing Enter
         on_Raw_sendCMDButton_clicked();
 }
 
+void MainWindow::on_Raw_CMDEdit_keyPressed(QObject* obj_addr, QEvent& event)
+{
+    if(obj_addr == ui->Raw_CMDEdit && event.type() == QEvent::KeyRelease)
+    {
+        QKeyEvent& keyEvent = static_cast<QKeyEvent&>(event);
+        if(keyEvent.key() == Qt::Key_Up)
+        {
+            if(stashedIndex > 0)
+                stashedIndex--;
+            else if(stashedIndex == -1)
+                stashedIndex = ui->Raw_CMDHistoryWidget->count() - 1;
+        }
+        else if(keyEvent.key() == Qt::Key_Down)
+        {
+            if(stashedIndex < ui->Raw_CMDHistoryWidget->count() - 1 && stashedIndex != -1)
+                stashedIndex++;
+            else if(stashedIndex == ui->Raw_CMDHistoryWidget->count() - 1)
+                stashedIndex = -1;
+        }
+        if(keyEvent.key() == Qt::Key_Up || keyEvent.key() == Qt::Key_Down)
+        {
+            ui->Raw_CMDEdit->blockSignals(true);
+            if(stashedIndex == -1)
+                ui->Raw_CMDEdit->setText(stashedCMDEditText);
+            else
+                ui->Raw_CMDEdit->setText(ui->Raw_CMDHistoryWidget->item(stashedIndex)->text());
+            ui->Raw_CMDEdit->blockSignals(false);
+        }
+    }
+}
 // *****************************************************
 
 // ******************** mifare ********************
@@ -798,6 +829,8 @@ void MainWindow::MF_widgetReset()
 void MainWindow::uiInit()
 {
     connect(ui->Raw_CMDEdit, &QLineEdit::editingFinished, this, &MainWindow::sendMSG);
+    ui->Raw_CMDEdit->installEventFilter(keyEventFilter);
+    connect(keyEventFilter, &MyEventFilter::eventHappened, this, &MainWindow::on_Raw_CMDEdit_keyPressed);
 
     connectStatusBar = new QLabel(this);
     programStatusBar = new QLabel(this);
@@ -1000,3 +1033,8 @@ void MainWindow::saveClientPath(const QString& path)
     settings->endGroup();
 }
 // ***********************************************
+
+void MainWindow::on_Raw_CMDEdit_textChanged(const QString &arg1)
+{
+    stashedCMDEditText = arg1;
+}

ui/mainwindow.h

@@ -21,6 +21,7 @@
 #include <QSettings>
 #include <QPushButton>
 
+#include "common/myeventfilter.h"
 #include "common/pm3process.h"
 #include "module/mifare.h"
 #include "common/util.h"
@@ -49,6 +50,7 @@ public slots:
     void setStatusBar(QLabel* target, const QString& text);
     void onPM3StateChanged(bool st, const QString& info);
     void MF_onTypeChanged(int id, bool st);
+    void on_Raw_CMDEdit_keyPressed(QObject *obj_addr, QEvent &event);
 private slots:
 
     void on_PM3_connectButton_clicked();
@@ -150,6 +152,8 @@ private slots:
     void on_MF_selectTrailerBox_stateChanged(int arg1);
 
     void on_stopButton_clicked();
+    void on_Raw_CMDEdit_textChanged(const QString &arg1);
+
 private:
     Ui::MainWindow* ui;
     QButtonGroup* typeBtnGroup;
@@ -160,6 +164,10 @@ private:
     QAction* myInfo;
     QAction* checkUpdate;
     QSettings* settings;
+    MyEventFilter* keyEventFilter;
+
+    QString stashedCMDEditText;
+    int stashedIndex = -1;
 
     void uiInit();
 

ui/mainwindow.ui

@@ -120,7 +120,7 @@
        </sizepolicy>
       </property>
       <property name="currentIndex">
-       <number>0</number>
+       <number>1</number>
       </property>
       <widget class="QWidget" name="mifareTab">
        <attribute name="title">
@@ -1198,6 +1198,9 @@
               <verstretch>0</verstretch>
              </sizepolicy>
             </property>
+            <property name="focusPolicy">
+             <enum>Qt::NoFocus</enum>
+            </property>
             <property name="verticalScrollBarPolicy">
              <enum>Qt::ScrollBarAlwaysOn</enum>
             </property>