4849: Prevent errors in gramplets that depend on the pyexiv2 module when this module is not available

svn: r17186

po/POTFILES.in

@@ -266,11 +266,11 @@ src/plugins/gramplet/CalendarGramplet.py
 src/plugins/gramplet/Children.py
 src/plugins/gramplet/DescendGramplet.py
 src/plugins/gramplet/Events.py
-src/plugins/gramplet/Exif.py
 src/plugins/gramplet/FanChartGramplet.py
 src/plugins/gramplet/FaqGramplet.py
 src/plugins/gramplet/GivenNameGramplet.py
 src/plugins/gramplet/gramplet.gpr.py
+src/plugins/gramplet/MetadataViewer.py
 src/plugins/gramplet/Notes.py
 src/plugins/gramplet/PedigreeGramplet.py
 src/plugins/gramplet/PersonDetails.py

src/gramps.py

@@ -191,6 +191,16 @@ def show_settings():
     except ImportError:
         cairover_str = 'not found'
 
+    try:
+        import pyexiv2
+        try:
+            pyexiv2_str = '%d.%d.%d' % pyexiv2.version_info 
+        except :# any failure to 'get' the version
+            pyexiv2_str = 'unknown version'
+
+    except ImportError:
+        pyexiv2_str = 'not found'
+
     import config
     usebsddb3 = config.get('preferences.use-bsddb3')
     try:
@@ -256,6 +266,7 @@ def show_settings():
     print ' bsddb     : %s' % bsddb_str
     print ' bsddb.db  : %s' % bsddb_db_str
     print ' cairo     : %s' % cairover_str
+    print ' pyexiv2   : %s' % pyexiv2_str
     print ' o.s.      : %s' % operating_system
     if kernel:
         print ' kernel    : %s' % kernel

src/gui/grampsbar.py

@@ -107,11 +107,12 @@ class GrampsBar(gtk.Notebook):
 
         opts_list.sort(key=lambda opt: opt["page"])
         for opts in opts_list:
-            all_opts = get_gramplet_opts(opts["name"], opts)
-            gramplet = make_requested_gramplet(TabGramplet, self, all_opts, 
-                                               self.dbstate, self.uistate)
-            if gramplet:
-                self.__add_tab(gramplet)
+            if opts["name"] in AVAILABLE_GRAMPLETS():
+                all_opts = get_gramplet_opts(opts["name"], opts)
+                gramplet = make_requested_gramplet(TabGramplet, self, all_opts, 
+                                                   self.dbstate, self.uistate)
+                if gramplet:
+                    self.__add_tab(gramplet)
 
         if len(opts_list) == 0:
             self.empty = True
@@ -126,7 +127,7 @@ class GrampsBar(gtk.Notebook):
         Load the gramplets from the configuration file.
         """
         retval = []
-        visible = False
+        visible = True
         default_page = 0
         filename = self.configfile
         if filename and os.path.exists(filename):

src/plugins/gramplet/Makefile.am

@@ -16,14 +16,14 @@ pkgdata_PYTHON = \
 	Children.py \
 	DescendGramplet.py \
 	Events.py \
-        Exif.py \
 	FanChartGramplet.py \
 	FaqGramplet.py \
-        Filter.py \
+	Filter.py \
 	Gallery.py \
 	GivenNameGramplet.py \
 	gramplet.gpr.py \
 	MediaPreview.py \
+	MetadataViewer.py \
 	Notes.py \
 	PedigreeGramplet.py \
 	PersonDetails.py \

src/plugins/gramplet/MetadataViewer.py

@@ -63,7 +63,7 @@ if not pyexiv2_req_install:
          Min_VERSION_str, _DOWNLOAD_LINK, PrefVersion_str)
          ).encode(sys.getfilesystemencoding()) )
 
-class Exif(Gramplet):
+class MetadataViewer(Gramplet):
     """
     Displays the exif tags of an image.
     """

src/plugins/gramplet/bottombar.gpr.py

@@ -77,20 +77,27 @@ register(GRAMPLET,
          gramplet_title=_("Preview"),
          )
 
-register(GRAMPLET, 
-        id                    = "Exif Viewer Gramplet", 
-        name                  = _("Exif Viewer Gramplet"), 
-        description           =  _("Gramplet showing exif tags for a media object"),
-        version               = "1.0.0",
-        gramps_target_version = "3.4",
-        status                = STABLE,
-        fname                 = "Exif.py",
-        height                = 200,
-        gramplet              =  'Exif',
-        gramplet_title        = _("Exif"),
-        authors               = ["Rob G. Healey"],
-        authors_email         = ["robhealey1@gmail.com"],
-         )
+try:
+    import pyexiv2
+    available = True
+except:
+    print _("WARNING: pyexiv2 module not loaded.  "
+            "Image metadata functionality will not be available.")
+    available = False
+
+if available:
+    register(GRAMPLET, 
+            id = "Metadata Viewer Gramplet", 
+            name = _("Metadata Viewer Gramplet"), 
+            description = _("Gramplet showing metadata for a media object"),
+            version = "1.0.0",
+            gramps_target_version = "3.4",
+            status = STABLE,
+            fname = "MetadataViewer.py",
+            height = 200,
+            gramplet = 'MetadataViewer',
+            gramplet_title = _("Image Metadata"),
+            )
 
 register(GRAMPLET, 
          id="Person Residence Gramplet", 

src/plugins/view/mediaview.py

@@ -425,8 +425,8 @@ class MediaView(ListView):
         """
         return (("Media Filter Gramplet",),
                 ("Media Preview Gramplet",
-                 "Exif Viewer Gramplet",
                  "Media Sources Gramplet",
                  "Media Notes Gramplet",
                  "Media Attributes Gramplet",
+                 "Metadata Viewer Gramplet",
                  "Media Backlinks Gramplet"))