plugin loading gui

.clang-format

@@ -0,0 +1,9 @@
+BasedOnStyle: Chromium
+IndentWidth: 2
+ColumnLimit: 160
+SpaceAfterCStyleCast: false
+UseTab: Never
+AllowShortIfStatementsOnASingleLine: false
+AlignTrailingComments: false
+SpacesBeforeTrailingComments: 1
+AlignConsecutiveMacros: Consecutive

inc/graph/server/gui/mainwindow.h

@@ -4,6 +4,7 @@
 #include <QMenuBar>
 #include <QStatusBar>
 #include <QToolBar>
+#include <graph/server/plugin.h>
 
 namespace Ui {
 class MainWindow;
@@ -17,9 +18,12 @@ public:
   ~MainWindow();
 
 private slots:
-  void on_actionExit_triggered();
+  void on_action_Add_triggered();
+  void on_action_Load_triggered();
 
 private:
   Ui::MainWindow *ui;
+
+  PluginModel* pluginsModel;
 };
 } // namespace Graph::GUI

inc/graph/server/plugin.h

@@ -1,18 +1,39 @@
 #pragma once
 
 #include <graph/plugins/plugin.h>
+#include <QAbstractListModel>
 #include <string>
 
 namespace Graph {
 
 class Plugin {
-private:
-  plugin_t *plugin;
+ private:
+  plugin_t* plugin;
+  const std::string path;
   const void* handle;
-public:
+
+ public:
   Plugin(const std::string& path);
   ~Plugin();
 
   bool init(update_callback_t callback);
+
+  const std::string& get_path() const { return this->path; }
+};
+
+class PluginModel : public QAbstractListModel {
+  Q_OBJECT
+ public:
+  PluginModel(QObject* parent) : QAbstractListModel(parent) {}
+  ~PluginModel();
+
+  int rowCount(const QModelIndex& parent = QModelIndex()) const override;
+  QVariant data(const QModelIndex& index, int role) const override;
+
+  void add(Plugin* plugin);
+  void remove(int index);
+
+ private:
+  QList<Plugin*> plugins;
 };
 } // namespace Graph

src/graph/server/gui/mainwindow.cpp

@@ -1,15 +1,52 @@
 #include <graph/server/gui/mainwindow.h>
+#include <graph/server/plugin.h>
 #include <graph/server/ui_mainwindow.h>
+#include <QFileDialog>
+#include <QMessageBox>
+#include <iostream>
+#include <stdexcept>
 
 namespace Graph::GUI {
-MainWindow::MainWindow(QWidget *parent)
-    : QMainWindow(parent), ui(new Ui::MainWindow) {
+MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent), ui(new Ui::MainWindow) {
   ui->setupUi(this);
+
+  // plugins
+  pluginsModel = new PluginModel(this);
+  ui->pluginsListView->setModel(pluginsModel);
+
+  // unload plugin
+  connect(ui->pluginsListView, &QListView::doubleClicked, [&](const QModelIndex& index) {
+    pluginsModel->removeRow(index.row());
+    pluginsModel->remove(index.row());
+    ui->pluginsListView->doItemsLayout();
+  });
 }
 
-MainWindow::~MainWindow() { delete ui; }
-
-void MainWindow::on_actionExit_triggered() {
-    this->close();
+MainWindow::~MainWindow() {
+  delete ui;
+  delete pluginsModel;
 }
+
+void MainWindow::on_action_Add_triggered() {}
+
+void MainWindow::on_action_Load_triggered() {
+  QString file = QFileDialog::getOpenFileName(this, "Load plugin", ".", "Plugins (*.so *.dll *.dylib)");
+
+  if (file.isEmpty())
+    return;
+
+  try {
+    pluginsModel->add(new Plugin(file.toStdString()));
+  } catch (std::runtime_error e) {
+    std::cout << e.what() << std::endl;
+    QMessageBox::critical(this, "Error", "Failed to load plugin.", QMessageBox::StandardButton::Ignore);
+  }
+
+  int row = pluginsModel->rowCount();
+  pluginsModel->insertRow(row);
+  QModelIndex index = pluginsModel->index(row);
+  ui->pluginsListView->doItemsLayout();
+  ui->pluginsListView->setCurrentIndex(index);
+}
+
 } // namespace Graph::GUI

src/graph/server/gui/mainwindow.ui

@@ -29,7 +29,7 @@
        </attribute>
        <layout class="QVBoxLayout" name="graphsVerticalLayout">
         <item>
-         <widget class="QListView" name="graphsListView"/>
+         <widget class="QListWidget" name="graphsListWidget"/>
         </item>
        </layout>
       </widget>

src/graph/server/main.cpp

@@ -1,16 +1,16 @@
+#include <dlfcn.h>
 #include <graph/server/gui/mainwindow.h>
 #include <graph/server/plugin.h>
-#include <dlfcn.h>
-#include <iostream>
 #include <QtWidgets/QApplication>
+#include <iostream>
 
 int main(int argc, char** argv) {
-    Graph::Plugin plugin("plugins/libhttp.so");
-    plugin.init((update_callback_t)1);
+  // Graph::Plugin plugin("plugins/libhttp.so");
+  // plugin.init((update_callback_t)1);
 
-    QApplication app(argc, argv);
-    Graph::GUI::MainWindow window;
-    window.show();
+  QApplication app(argc, argv);
+  Graph::GUI::MainWindow window;
+  window.show();
 
-    return app.exec();
+  return app.exec();
 }

src/graph/server/plugin.cpp

@@ -1,31 +1,65 @@
 #include <dlfcn.h>
 #include <graph/server/plugin.h>
+#include <qnamespace.h>
+#include <qobject.h>
+#include <qvariant.h>
 #include <stdexcept>
 #include <string>
 
 namespace Graph {
-Plugin::Plugin(const std::string &path) {
-    this->handle = dlopen(path.c_str(), RTLD_LAZY);
-    if (!this->handle)
-        throw std::runtime_error(dlerror());
+Plugin::Plugin(const std::string& path) : path(path) {
+  this->handle = dlopen(path.c_str(), RTLD_LAZY);
+  if (!this->handle)
+    throw std::runtime_error(dlerror());
 
-    this->plugin = (plugin_t*)dlsym((void*)this->handle, "plugin");
-    if (!this->plugin)
-        throw std::runtime_error(dlerror());
+  this->plugin = (plugin_t*)dlsym((void*)this->handle, "plugin");
+  if (!this->plugin)
+    throw std::runtime_error(dlerror());
 
-    this->plugin->update_callback = nullptr;
+  this->plugin->update_callback = nullptr;
 }
 
 Plugin::~Plugin() {
-    if (this->plugin->update_callback)
-        this->plugin->destroy_method();
+  if (this->plugin->update_callback)
+    this->plugin->destroy_method();
 
-    if (this->handle)
-        dlclose((void*)this->handle);
+  if (this->handle)
+    dlclose((void*)this->handle);
 }
 
 bool Plugin::init(update_callback_t callback) {
-    this->plugin->update_callback = callback;
-    return this->plugin->init_method();
+  this->plugin->update_callback = callback;
+  return this->plugin->init_method();
 }
+
+PluginModel::~PluginModel() {
+  for (Plugin* plugin : this->plugins) {
+    delete plugin;
+  }
+}
+
+int PluginModel::rowCount(const QModelIndex& parent) const {
+  return this->plugins.size();
+}
+
+QVariant PluginModel::data(const QModelIndex& index, int role) const {
+  if (!index.isValid())
+    return QVariant();
+
+  if (role == Qt::DisplayRole) {
+    return QString(plugins[index.row()]->get_path().c_str());
+  }
+
+  return QVariant();
+}
+
+void PluginModel::add(Plugin* plugin) {
+  plugins << plugin;
+}
+
+void PluginModel::remove(int index) {
+  delete plugins[index];
+  plugins.removeAt(index);
+}
+
 } // namespace Graph