Calculate supported categories based on selected plugin

src/base/search/searchpluginmanager.cpp

@@ -38,6 +38,7 @@
 #include <QPointer>
 #include <QProcess>
 
+#include "base/global.h"
 #include "base/logger.h"
 #include "base/net/downloadmanager.h"
 #include "base/net/downloadhandler.h"
@@ -122,6 +123,27 @@ QStringList SearchPluginManager::supportedCategories() const
     return result;
 }
 
+QStringList SearchPluginManager::getPluginCategories(const QString &pluginName) const
+{
+    QStringList plugins;
+    if (pluginName == "all")
+        plugins = allPlugins();
+    else if ((pluginName == "enabled") || (pluginName == "multi"))
+        plugins = enabledPlugins();
+    else
+        plugins << pluginName.trimmed();
+
+    QSet<QString> categories;
+    for (const QString &pluginName : qAsConst(plugins)) {
+        const PluginInfo *plugin = pluginInfo(pluginName);
+        if (!plugin) continue; // plugin wasn't found
+        for (const QString &category : plugin->supportedCategories)
+            categories << category;
+    }
+
+    return categories.toList();
+}
+
 PluginInfo *SearchPluginManager::pluginInfo(const QString &name) const
 {
     return m_plugins.value(name);

src/base/search/searchpluginmanager.h

@@ -66,6 +66,7 @@ public:
     QStringList allPlugins() const;
     QStringList enabledPlugins() const;
     QStringList supportedCategories() const;
+    QStringList getPluginCategories(const QString &pluginName) const;
     PluginInfo *pluginInfo(const QString &name) const;
 
     void enablePlugin(const QString &name, bool enabled = true);

src/gui/search/searchwidget.cpp

@@ -139,8 +139,8 @@ SearchWidget::SearchWidget(MainWindow *mainWindow)
     auto *searchManager = new SearchPluginManager;
     const auto onPluginChanged = [this]()
     {
-        fillCatCombobox();
         fillPluginComboBox();
+        fillCatCombobox();
         selectActivePage();
     };
     connect(searchManager, &SearchPluginManager::pluginInstalled, this, onPluginChanged);
@@ -155,6 +155,8 @@ SearchWidget::SearchWidget(MainWindow *mainWindow)
     connect(m_ui->m_searchPattern, &LineEdit::textEdited, this, &SearchWidget::searchTextEdited);
     connect(m_ui->selectPlugin, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged)
             , this, &SearchWidget::selectMultipleBox);
+    connect(m_ui->selectPlugin, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged)
+            , this, &SearchWidget::fillCatCombobox);
 }
 
 void SearchWidget::fillCatCombobox()
@@ -164,7 +166,7 @@ void SearchWidget::fillCatCombobox()
 
     using QStrPair = QPair<QString, QString>;
     QList<QStrPair> tmpList;
-    foreach (const QString &cat, SearchPluginManager::instance()->supportedCategories())
+    foreach (const QString &cat, SearchPluginManager::instance()->getPluginCategories(selectedPlugin()))
         tmpList << qMakePair(SearchPluginManager::categoryFullName(cat), cat);
     std::sort(tmpList.begin(), tmpList.end(), [](const QStrPair &l, const QStrPair &r) { return (QString::localeAwareCompare(l.first, r.first) < 0); });
 
@@ -172,7 +174,7 @@ void SearchWidget::fillCatCombobox()
         qDebug("Supported category: %s", qUtf8Printable(p.second));
         m_ui->comboCategory->addItem(p.first, QVariant(p.second));
     }
-    
+
     if (m_ui->comboCategory->count() > 1)
         m_ui->comboCategory->insertSeparator(1);
 }