Initial commit (project based on widgets)

historylineeditbox.cpp

@@ -0,0 +1,108 @@
+/*
+    Copyright 2018 Benjamin Vedder	benjamin@vedder.se
+
+    This file is part of VESC Tool.
+
+    VESC Tool is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    VESC Tool is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    */
+
+#include "historylineeditbox.h"
+#include <QDebug>
+
+HistoryLineEditBox::HistoryLineEditBox(QWidget *parent) :
+    QLineEdit(parent)
+{
+    mIndexNow = 0;
+    installEventFilter(this);
+}
+
+bool HistoryLineEditBox::eventFilter(QObject *object, QEvent *e)
+{
+    Q_UNUSED(object);
+
+    if (e->type() == QEvent::KeyPress)
+    {
+        QKeyEvent *keyEvent = static_cast<QKeyEvent *>(e);
+        /*
+        switch(keyEvent->key()) {
+        case Qt::Key_Up:
+        case Qt::Key_Down:
+            return false;
+
+        case Qt::Key_Return:
+        case Qt::Key_Enter:
+            emit enterClicked();
+            break;
+
+        default:
+            return false;
+        }
+        */
+        bool retval = false;
+
+        switch(keyEvent->key()) {
+        case Qt::Key_Up: {
+            if (mIndexNow == 0) {
+                mCurrentText = text();
+            }
+
+            mIndexNow--;
+
+            int ind = mHistory.size() + mIndexNow;
+            if (ind >= 0 && ind < mHistory.size()) {
+                setText(mHistory.at(ind));
+            } else {
+                mIndexNow++;
+            }
+        } break;
+
+        case Qt::Key_Down:
+            mIndexNow++;
+
+            if (mIndexNow >= 0) {
+                if (mIndexNow == 0) {
+                    setText(mCurrentText);
+                }
+                mIndexNow = 0;
+            } else {
+                int ind = mHistory.size() + mIndexNow;
+                if (ind >= 0 && ind < mHistory.size()) {
+                    setText(mHistory.at(ind));
+                }
+            }
+            break;
+
+        case Qt::Key_Return:
+        case Qt::Key_Enter:
+            if (!text().isEmpty()) {
+                if (mHistory.isEmpty() || mHistory.last() != text()) {
+                    mHistory.append(text());
+                }
+            }
+            mIndexNow = 0;
+            mCurrentText.clear();
+            retval = false;
+
+            emit enterClicked();
+            break;
+
+        default:
+            break;
+        }
+
+        return retval;
+    }
+
+    return false;
+}