From b25829645d15aa54caf9ea4f53de2489ea04f863 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Fri, 23 Nov 2018 16:09:12 +0100
Subject: Adding and Removing plugins at runtime

---
 src/browser.cpp              | 79 +++++++++++++++++++++++++++++++++-----------
 src/browser.h                | 21 ++++++++++--
 src/mainwindow/mainwindow.ui | 11 ++++--
 3 files changed, 88 insertions(+), 23 deletions(-)

(limited to 'src')

diff --git a/src/browser.cpp b/src/browser.cpp
index 4547e08..7130096 100644
--- a/src/browser.cpp
+++ b/src/browser.cpp
@@ -24,6 +24,7 @@
 #include "webprofile.h"
 #include <QAction>
 #include <QDir>
+#include <QFileDialog>
 #include <QFileInfo>
 #include <QFileInfoList>
 #include <QJsonArray>
@@ -47,6 +48,9 @@ Browser::~Browser()
     if(m_bookmarks)
         m_bookmarks->save();
 
+    for(auto *info : m_plugins)
+        delete info;
+
     qDeleteAll(m_windows);
     m_windows.clear();
 }
@@ -122,10 +126,30 @@ ProfileManager *Browser::getProfileManager()
     return m_profileManager;
 }
 
+QPluginLoader *Browser::addPlugin(const QString &path)
+{
+    if(path.isEmpty())
+        return nullptr;
+
+    auto *loader = new QPluginLoader(path, this);
+    loader->load();
+
+    auto *info = new PluginInfo(loader);
+    m_plugins.append(info);
+
+    for(MainWindow *window : m_windows) {
+        addPluginTo(info, window);
+    }
+
+    return loader;
+}
+
 void Browser::setup(QVector<QPluginLoader *> plugins)
 {
     Q_ASSERT(m_config);
-    m_plugins = plugins;
+    for(QPluginLoader *loader : plugins) {
+        m_plugins.append(new PluginInfo(loader));
+    }
 
     auto stylesheet = m_config->value<QString>("browser.stylesheet");
     if(stylesheet) {
@@ -242,25 +266,12 @@ MainWindow *Browser::createWindow()
         }
     });
 
-    for(QPluginLoader *loader : qAsConst(m_plugins)) {
-        auto *pluginMenu = window->ui->menuTools->addMenu(loader->metaData().value("MetaData").toObject().value("name").toString());
-
-        auto *aboutAction = pluginMenu->addAction(tr("About"));
-        connect(aboutAction, &QAction::triggered, this, [loader, window]() {
-            auto *dlg = new AboutPluginDialog(loader, window);
-            dlg->exec();
-        });
-
-        auto *runAction = pluginMenu->addAction(tr("Run"));
-        runAction->setShortcut(QKeySequence::fromString(loader->metaData().value("MetaData").toObject().value("shortcut").toString()));
+    connect(window->ui->actionAddPlugin, &QAction::triggered, this, [this]() {
+        this->addPlugin(QFileDialog::getOpenFileName(nullptr, tr("Add Plugin"), QDir::homePath(), tr("Plugins (*.so)")));
+    });
 
-        connect(runAction, &QAction::triggered, window, [loader, window]() {
-            if(loader->isLoaded()) {
-                const auto *interface = qobject_cast<PluginInterface *>(loader->instance());
-                Q_CHECK_PTR(interface);
-                interface->createWidget(window)->exec();
-            }
-        });
+    for(auto *info : m_plugins) {
+        addPluginTo(info, window);
     }
 
     m_windows.append(window);
@@ -270,3 +281,33 @@ MainWindow *Browser::createWindow()
 
     return window;
 }
+
+void Browser::addPluginTo(PluginInfo *info, MainWindow *window)
+{
+    QPluginLoader *loader = info->loader;
+    auto *pluginMenu = window->ui->menuTools->addMenu(loader->metaData().value("MetaData").toObject().value("name").toString());
+    info->menus.append(pluginMenu);
+
+    auto *aboutAction = pluginMenu->addAction(tr("About"));
+    connect(aboutAction, &QAction::triggered, this, [loader, window]() {
+        auto *dlg = new AboutPluginDialog(loader, window);
+        dlg->exec();
+    });
+
+    auto *runAction = pluginMenu->addAction(tr("Run"));
+    runAction->setShortcut(QKeySequence::fromString(loader->metaData().value("MetaData").toObject().value("shortcut").toString()));
+
+    connect(runAction, &QAction::triggered, window, [loader, window]() {
+        if(loader->isLoaded()) {
+            const auto *interface = qobject_cast<PluginInterface *>(loader->instance());
+            Q_CHECK_PTR(interface);
+            interface->createWidget(window)->exec();
+        }
+    });
+
+    auto *removeAction = pluginMenu->addAction(tr("Remove"));
+    connect(removeAction, &QAction::triggered, this, [this, info]() {;
+        m_plugins.removeOne(info);
+        delete info;
+    });
+}
diff --git a/src/browser.h b/src/browser.h
index e871202..2148484 100644
--- a/src/browser.h
+++ b/src/browser.h
@@ -16,6 +16,8 @@
 #include <functional>
 #include <memory>
 #include <singleapplication.h>
+#include <QMenu>
+#include <QPluginLoader>
 
 class Configuration;
 class BookmarksWidget;
@@ -23,7 +25,6 @@ class DownloadsWidget;
 class Filter;
 class MainWindow;
 class ProfileManager;
-class QPluginLoader;
 class Browser : public SingleApplication, public BrowserInterface
 {
     Q_OBJECT
@@ -47,6 +48,7 @@ public:
     QPair<QString, Profile *> loadProfile(const QString &id, bool isOffTheRecord = true) override;
     void removeProfile(const QString &id) override;
 
+    QPluginLoader *addPlugin(const QString &path = QString());
     void setConfiguration(std::unique_ptr<Configuration> &config);
 
     void setup(QVector<QPluginLoader *> plugins);
@@ -61,6 +63,21 @@ public slots:
     MainWindow *createWindow();
 
 private:
+    struct PluginInfo {
+        explicit PluginInfo(QPluginLoader *l) {
+            this->loader = l;
+        }
+        ~PluginInfo() {
+            loader->unload();
+            for(auto *m : menus)
+                m->deleteLater();
+        };
+
+        QPluginLoader *loader;
+        QVector<QMenu *> menus;
+    };
+    void addPluginTo(PluginInfo *info, MainWindow *window);
+
     Q_DISABLE_COPY(Browser)
 
     std::unique_ptr<Configuration> m_config;
@@ -70,7 +87,7 @@ private:
     std::unique_ptr<Filter> m_urlFilter;
 
     QVector<MainWindow *> m_windows;
-    QVector<QPluginLoader *> m_plugins;
+    QVector<PluginInfo*> m_plugins;
 };
 
 #endif // SMOLBOTE_BROWSER_H
diff --git a/src/mainwindow/mainwindow.ui b/src/mainwindow/mainwindow.ui
index 587b4fd..309bfaf 100644
--- a/src/mainwindow/mainwindow.ui
+++ b/src/mainwindow/mainwindow.ui
@@ -58,6 +58,8 @@
     <addaction name="actionBookmarks"/>
     <addaction name="actionDownloads"/>
     <addaction name="separator"/>
+    <addaction name="actionAddPlugin"/>
+    <addaction name="separator"/>
    </widget>
    <widget class="QMenu" name="menuPage">
     <property name="title">
@@ -154,12 +156,17 @@
   </action>
   <action name="actionBookmarks">
    <property name="text">
-    <string>Bookmarks</string>
+    <string>&amp;Bookmarks</string>
    </property>
   </action>
   <action name="actionDownloads">
    <property name="text">
-    <string>Downloads</string>
+    <string>&amp;Downloads</string>
+   </property>
+  </action>
+  <action name="actionAddPlugin">
+   <property name="text">
+    <string>Add Plugin</string>
    </property>
   </action>
  </widget>
-- 
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