Add a checkbox to preferences->plugins to show only user installed plugins

src/calibre/gui2/preferences/plugins.py

@@ -24,18 +24,27 @@ from calibre.constants import iswindows
 
 class PluginModel(QAbstractItemModel, SearchQueryParser): # {{{
 
-    def __init__(self, *args):
-        QAbstractItemModel.__init__(self, *args)
+    def __init__(self, show_only_user_plugins=False):
+        QAbstractItemModel.__init__(self)
         SearchQueryParser.__init__(self, ['all'])
+        self.show_only_user_plugins = show_only_user_plugins
         self.icon = QVariant(QIcon(I('plugins.png')))
         p = QIcon(self.icon).pixmap(32, 32, QIcon.Disabled, QIcon.On)
         self.disabled_icon = QVariant(QIcon(p))
         self._p = p
         self.populate()
 
+    def toggle_shown_plugins(self, show_only_user_plugins):
+        self.show_only_user_plugins = show_only_user_plugins
+        self.populate()
+        self.reset()
+
     def populate(self):
         self._data = {}
         for plugin in initialized_plugins():
+            if (getattr(plugin, 'plugin_path', None) is None
+                    and self.show_only_user_plugins):
+                continue
             if plugin.type not in self._data:
                 self._data[plugin.type] = [plugin]
             else:
@@ -64,6 +73,7 @@ class PluginModel(QAbstractItemModel, SearchQueryParser): # {{{
             if p < 0:
                 if query in lower(self.categories[c]):
                     ans.add((c, p))
+                continue
             else:
                 try:
                     plugin = self._data[self.categories[c]][p]
@@ -209,7 +219,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
 
     def genesis(self, gui):
         self.gui = gui
-        self._plugin_model = PluginModel()
+        self._plugin_model = PluginModel(self.user_installed_plugins.isChecked())
         self.plugin_view.setModel(self._plugin_model)
         self.plugin_view.setStyleSheet(
                 "QTreeView::item { padding-bottom: 10px;}")
@@ -226,6 +236,10 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         self.next_button.clicked.connect(self.find_next)
         self.previous_button.clicked.connect(self.find_previous)
         self.changed_signal.connect(self.reload_store_plugins)
+        self.user_installed_plugins.stateChanged.connect(self.show_user_installed_plugins)
+
+    def show_user_installed_plugins(self, state):
+        self._plugin_model.toggle_shown_plugins(self.user_installed_plugins.isChecked())
 
     def find(self, query):
         idx = self._plugin_model.find(query)

src/calibre/gui2/preferences/plugins.ui

@@ -65,6 +65,16 @@
      </item>
     </layout>
    </item>
+   <item>
+    <widget class="QCheckBox" name="user_installed_plugins">
+     <property name="toolTip">
+      <string>Show only those plugins that have been installed by you</string>
+     </property>
+     <property name="text">
+      <string>Show only &amp;user installed plugins</string>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="QTreeView" name="plugin_view">
      <property name="alternatingRowColors">