Make it clearer when a plugin has been disabled

src/calibre/customize/ui.py

@@ -447,7 +447,8 @@ def plugin_for_catalog_format(fmt):
 
 # }}}
 
-def device_plugins(include_disabled=False): # {{{
+# Device plugins {{{
+def device_plugins(include_disabled=False):
     for plugin in _initialized_plugins:
         if isinstance(plugin, DevicePlugin):
             if include_disabled or not is_disabled(plugin):
@@ -456,6 +457,13 @@ def device_plugins(include_disabled=False): # {{{
                             False):
                         plugin.do_delayed_plugin_initialization()
                     yield plugin
+
+def disabled_device_plugins():
+    for plugin in _initialized_plugins:
+        if isinstance(plugin, DevicePlugin):
+            if is_disabled(plugin):
+                if platform in plugin.supported_platforms:
+                    yield plugin
 # }}}
 
 # epub fixers {{{

src/calibre/devices/__init__.py

@@ -55,7 +55,8 @@ def get_connected_device():
             break
     return dev
 
-def debug(ioreg_to_tmp=False, buf=None, plugins=None):
+def debug(ioreg_to_tmp=False, buf=None, plugins=None,
+        disabled_plugins=None):
     '''
     If plugins is None, then this method calls startup and shutdown on the
     device plugins. So if you are using it in a context where startup could
@@ -63,7 +64,7 @@ def debug(ioreg_to_tmp=False, buf=None, plugins=None):
     device plugins as the plugins parameter.
     '''
     import textwrap
-    from calibre.customize.ui import device_plugins
+    from calibre.customize.ui import device_plugins, disabled_device_plugins
     from calibre.debug import print_basic_debug_info
     from calibre.devices.scanner import DeviceScanner, win_pnp_drives
     from calibre.constants import iswindows, isosx
@@ -85,6 +86,9 @@ def debug(ioreg_to_tmp=False, buf=None, plugins=None):
             except:
                 out('Startup failed for device plugin: %s'%d)
 
+    if disabled_plugins is None:
+        disabled_plugins = list(disabled_device_plugins())
+
     try:
         print_basic_debug_info(out=buf)
         s = DeviceScanner()
@@ -113,9 +117,10 @@ def debug(ioreg_to_tmp=False, buf=None, plugins=None):
             ioreg += 'Output from osx_get_usb_drives:\n'+drives+'\n\n'
             ioreg += Device.run_ioreg()
         connected_devices = []
-        out('Available plugins:', textwrap.fill(' '.join([x.__class__.__name__ for x in
-            devplugins])))
-        out(' ')
+        if disabled_plugins:
+            out('\nDisabled plugins:', textwrap.fill(' '.join([x.__class__.__name__ for x in
+                disabled_plugins])))
+            out(' ')
         found_dev = False
         for dev in devplugins:
             if not dev.MANAGES_DEVICE_PRESENCE: continue

src/calibre/gui2/device.py

@@ -11,7 +11,7 @@ from PyQt4.Qt import (QMenu, QAction, QActionGroup, QIcon, SIGNAL,
                      QDialogButtonBox)
 
 from calibre.customize.ui import (available_input_formats, available_output_formats,
-    device_plugins)
+    device_plugins, disabled_device_plugins)
 from calibre.devices.interface import DevicePlugin
 from calibre.devices.errors import (UserFeedback, OpenFeedback, OpenFailed,
                                     InitialConnectionError)
@@ -130,6 +130,7 @@ class DeviceManager(Thread): # {{{
         self.setDaemon(True)
         # [Device driver, Showing in GUI, Ejected]
         self.devices        = list(device_plugins())
+        self.disabled_device_plugins = list(disabled_device_plugins())
         self.managed_devices = [x for x in self.devices if
                 not x.MANAGES_DEVICE_PRESENCE]
         self.unmanaged_devices = [x for x in self.devices if
@@ -425,7 +426,8 @@ class DeviceManager(Thread): # {{{
 
     def _debug_detection(self):
         from calibre.devices import debug
-        raw = debug(plugins=self.devices)
+        raw = debug(plugins=self.devices,
+                disabled_plugins=self.disabled_device_plugins)
         return raw
 
     def debug_detection(self, done):

src/calibre/gui2/preferences/plugins.py

@@ -29,7 +29,7 @@ class PluginModel(QAbstractItemModel, SearchQueryParser): # {{{
         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)
+        p = QIcon(self.icon).pixmap(64, 64, QIcon.Disabled, QIcon.On)
         self.disabled_icon = QVariant(QIcon(p))
         self._p = p
         self.populate()
@@ -194,17 +194,20 @@ class PluginModel(QAbstractItemModel, SearchQueryParser): # {{{
                         dict(plugin_type=category, plugins=_('plugins')))
         else:
             plugin = self.index_to_plugin(index)
+            disabled = is_disabled(plugin)
             if role == Qt.DisplayRole:
                 ver = '.'.join(map(str, plugin.version))
                 desc = '\n'.join(textwrap.wrap(plugin.description, 100))
                 ans='%s (%s) %s %s\n%s'%(plugin.name, ver, _('by'), plugin.author, desc)
                 c = plugin_customization(plugin)
-                if c:
+                if c and not disabled:
                     ans += _('\nCustomization: ')+c
+                if disabled:
+                    ans += _('\n\nThis plugin has been disabled')
                 return QVariant(ans)
             if role == Qt.DecorationRole:
-                return self.disabled_icon if is_disabled(plugin) else self.icon
-            if role == Qt.ForegroundRole and is_disabled(plugin):
+                return self.disabled_icon if disabled else self.icon
+            if role == Qt.ForegroundRole and disabled:
                 return QVariant(QBrush(Qt.gray))
             if role == Qt.UserRole:
                 return plugin