Doc: Fix QDoc warnings in ExtensionSystem class docs

Task-number: QTCREATORBUG-23544
Change-Id: I6500fefdaa919f807fa4bf4372426b19a6e57aa2
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/libs/extensionsystem/plugindetailsview.cpp

@@ -38,6 +38,7 @@
 
 /*!
     \class ExtensionSystem::PluginDetailsView
+    \inmodule QtCreator
     \brief The PluginDetailsView class implements a widget that displays the
     contents of a PluginSpec.
 

src/libs/extensionsystem/pluginerroroverview.cpp

@@ -32,6 +32,11 @@ Q_DECLARE_METATYPE(ExtensionSystem::PluginSpec*)
 
 namespace ExtensionSystem {
 
+/*!
+    \class ExtensionSystem::PluginErrorOverview
+    \internal
+*/
+
 PluginErrorOverview::PluginErrorOverview(QWidget *parent) :
     QDialog(parent),
     m_ui(new Internal::Ui::PluginErrorOverview)

src/libs/extensionsystem/pluginerrorview.cpp

@@ -31,6 +31,7 @@
 
 /*!
     \class ExtensionSystem::PluginErrorView
+    \inmodule QtCreator
     \brief The PluginErrorView class implements a widget that displays the
     state and error message of a PluginSpec.
 

src/libs/extensionsystem/pluginmanager.cpp

@@ -71,6 +71,7 @@ enum { debugLeaks = 0 };
 
 /*!
     \namespace ExtensionSystem
+    \inmodule QtCreator
     \brief The ExtensionSystem namespace provides classes that belong to the
            core plugin system.
 
@@ -85,6 +86,7 @@ enum { debugLeaks = 0 };
 
 /*!
     \class ExtensionSystem::PluginManager
+    \inmodule QtCreator
     \ingroup mainclasses
 
     \brief The PluginManager class implements the core plugin system that

src/libs/extensionsystem/pluginview.cpp

@@ -44,6 +44,7 @@
 
 /*!
     \class ExtensionSystem::PluginView
+    \inmodule QtCreator
     \brief The PluginView class implements a widget that shows a list of all
     plugins and their state.
 
@@ -67,6 +68,11 @@
     for example by a double-click.
 */
 
+/*!
+    \fn void PluginView::pluginSettingsChanged(ExtensionSystem::PluginSpec *spec)
+    The settings for the plugin list entry corresponding to \a spec changed.
+*/
+
 Q_DECLARE_METATYPE(ExtensionSystem::PluginSpec*)
 
 using namespace Utils;
@@ -321,8 +327,8 @@ private:
 using namespace ExtensionSystem::Internal;
 
 /*!
-    Constructs a PluginView that gets the list of plugins from the
-    given plugin \a manager with a given \a parent widget.
+    Constructs a plugin view with \a parent that displays a list of plugins
+    from a plugin manager.
 */
 PluginView::PluginView(QWidget *parent)
     : QWidget(parent)
@@ -383,18 +389,27 @@ PluginSpec *PluginView::currentPlugin() const
     return pluginForIndex(m_categoryView->currentIndex());
 }
 
+/*!
+    Sets the \a filter for listing plugins.
+*/
 void PluginView::setFilter(const QString &filter)
 {
     m_sortModel->setFilterFixedString(filter);
     m_categoryView->expandAll();
 }
 
+/*!
+    Sets the list filtering to \a showHidden.
+*/
 void PluginView::setShowHidden(bool showHidden)
 {
     m_sortModel->setShowHidden(showHidden);
     m_categoryView->expandAll();
 }
 
+/*!
+    Returns whether hidden plugins are listed.
+*/
 bool PluginView::isShowingHidden() const
 {
     return m_sortModel->isShowingHidden();