cabana: load dbc from paste (#26098)

opendbc

@@ -1 +1 @@
-Subproject commit dde0ff6f4456c167df204bf5ac1e3f2979c844c9
+Subproject commit e37ef84f1ab848e2bf37f2c755f9e56213ce14e2

tools/cabana/dbcmanager.cc

@@ -1,5 +1,6 @@
 #include "tools/cabana/dbcmanager.h"
 
+#include <sstream>
 #include <QVector>
 
 DBCManager::DBCManager(QObject *parent) : QObject(parent) {}
@@ -16,6 +17,17 @@ void DBCManager::open(const QString &dbc_file_name) {
   emit DBCFileChanged();
 }
 
+void DBCManager::open(const QString &name, const QString &content) {
+  this->dbc_name = name;
+  std::istringstream stream(content.toStdString());
+  dbc = const_cast<DBC *>(dbc_parse_from_stream(name.toStdString(), stream));
+  msg_map.clear();
+  for (auto &msg : dbc->msgs) {
+    msg_map[msg.address] = &msg;
+  }
+  emit DBCFileChanged();
+}
+
 void save(const QString &dbc_file_name) {
   // TODO: save DBC to file
 }

tools/cabana/dbcmanager.h

@@ -12,6 +12,7 @@ public:
   ~DBCManager();
 
   void open(const QString &dbc_file_name);
+  void open(const QString &name, const QString &content);
   void save(const QString &dbc_file_name);
 
   void addSignal(const QString &id, const Signal &sig);

tools/cabana/messageswidget.cc

@@ -1,12 +1,13 @@
 #include "tools/cabana/messageswidget.h"
 
-#include <QComboBox>
 #include <QCompleter>
+#include <QDialogButtonBox>
 #include <QFontDatabase>
 #include <QHeaderView>
 #include <QLineEdit>
 #include <QPushButton>
 #include <QSortFilterProxyModel>
+#include <QTextEdit>
 #include <QVBoxLayout>
 
 #include "tools/cabana/dbcmanager.h"
@@ -16,20 +17,23 @@ MessagesWidget::MessagesWidget(QWidget *parent) : QWidget(parent) {
 
   // DBC file selector
   QHBoxLayout *dbc_file_layout = new QHBoxLayout();
-  QComboBox *combo = new QComboBox(this);
+  dbc_combo = new QComboBox(this);
   auto dbc_names = dbc()->allDBCNames();
   for (const auto &name : dbc_names) {
-    combo->addItem(QString::fromStdString(name));
+    dbc_combo->addItem(QString::fromStdString(name));
   }
-  combo->model()->sort(0);
+  dbc_combo->model()->sort(0);
-  combo->setEditable(true);
+  dbc_combo->setEditable(true);
-  combo->setCurrentText(QString());
+  dbc_combo->setCurrentText(QString());
-  combo->setInsertPolicy(QComboBox::NoInsert);
+  dbc_combo->setInsertPolicy(QComboBox::NoInsert);
-  combo->completer()->setCompletionMode(QCompleter::PopupCompletion);
+  dbc_combo->completer()->setCompletionMode(QCompleter::PopupCompletion);
   QFont font;
   font.setBold(true);
-  combo->lineEdit()->setFont(font);
+  dbc_combo->lineEdit()->setFont(font);
-  dbc_file_layout->addWidget(combo);
+  dbc_file_layout->addWidget(dbc_combo);
+
+  QPushButton *load_from_paste = new QPushButton(tr("Load from paste"), this);
+  dbc_file_layout->addWidget(load_from_paste);
 
   dbc_file_layout->addStretch();
   QPushButton *save_btn = new QPushButton(tr("Save DBC"), this);
@@ -64,7 +68,8 @@ MessagesWidget::MessagesWidget(QWidget *parent) : QWidget(parent) {
   // signals/slots
   QObject::connect(filter, &QLineEdit::textChanged, proxy_model, &QSortFilterProxyModel::setFilterFixedString);
   QObject::connect(can, &CANMessages::updated, model, &MessageListModel::updateState);
-  QObject::connect(combo, SIGNAL(activated(const QString &)), SLOT(dbcSelectionChanged(const QString &)));
+  QObject::connect(dbc_combo, SIGNAL(activated(const QString &)), SLOT(dbcSelectionChanged(const QString &)));
+  QObject::connect(load_from_paste, &QPushButton::clicked, this, &MessagesWidget::loadFromPaste);
   QObject::connect(save_btn, &QPushButton::clicked, [=]() {
     // TODO: save DBC to file
   });
@@ -75,7 +80,7 @@ MessagesWidget::MessagesWidget(QWidget *parent) : QWidget(parent) {
   });
 
   // For test purpose
-  combo->setCurrentText("toyota_nodsu_pt_generated");
+  dbc_combo->setCurrentText("toyota_nodsu_pt_generated");
 }
 
 void MessagesWidget::dbcSelectionChanged(const QString &dbc_file) {
@@ -84,6 +89,14 @@ void MessagesWidget::dbcSelectionChanged(const QString &dbc_file) {
   table_widget->sortByColumn(0, Qt::AscendingOrder);
 }
 
+void MessagesWidget::loadFromPaste() {
+  LoadDBCDialog dlg(this);
+  if (dlg.exec()) {
+    dbc()->open("from paste", dlg.dbc_edit->toPlainText());
+    dbc_combo->setCurrentText("loaded from paste");
+  }
+}
+
 // MessageListModel
 
 QVariant MessageListModel::headerData(int section, Qt::Orientation orientation, int role) const {
@@ -133,3 +146,17 @@ void MessageListModel::updateState() {
     emit dataChanged(index(0, 0), index(row_count - 1, 3), {Qt::DisplayRole});
   }
 }
+
+LoadDBCDialog::LoadDBCDialog(QWidget *parent) : QDialog(parent) {
+  QVBoxLayout *main_layout = new QVBoxLayout(this);
+  dbc_edit = new QTextEdit(this);
+  dbc_edit->setAcceptRichText(false);
+  dbc_edit->setPlaceholderText(tr("paste DBC file here"));
+  main_layout->addWidget(dbc_edit);
+  auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
+  main_layout->addWidget(buttonBox);
+
+  setFixedWidth(640);
+  connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
+  connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
+}

tools/cabana/messageswidget.h

@@ -1,10 +1,21 @@
 #pragma once
 
 #include <QAbstractTableModel>
+#include <QComboBox>
+#include <QDialog>
 #include <QTableView>
+#include <QTextEdit>
 
 #include "tools/cabana/canmessages.h"
 
+class LoadDBCDialog : public QDialog {
+  Q_OBJECT
+
+public:
+  LoadDBCDialog(QWidget *parent);
+  QTextEdit *dbc_edit;
+};
+
 class MessageListModel : public QAbstractTableModel {
 Q_OBJECT
 
@@ -28,11 +39,13 @@ public:
 
 public slots:
   void dbcSelectionChanged(const QString &dbc_file);
+  void loadFromPaste();
 
 signals:
   void msgSelectionChanged(const QString &message_id);
 
 protected:
   QTableView *table_widget;
+  QComboBox *dbc_combo;
   MessageListModel *model;
 };