Allow alternate stylesheets in pages

Useful when you create a site web, you don't need to create a new
web when you are testing the stylesheets. The final user can change
the stylesheet for the current page.

i.e. on Firefox: View -> Page style -> The stylesheet

gramps/plugins/webreport/basepage.py

@@ -1422,8 +1422,23 @@ class BasePage: # pylint: disable=C1001
                          Html("link", type="text/css", href=url3,
                               media='print', rel="stylesheet", indent=False),
                          Html("link", type="text/css", href=url2,
-                              media="screen", rel="stylesheet", indent=False),
+                              media="screen", title=self._("Default"),
+                              rel="stylesheet", indent=False),
                          )
+        # create all alternate stylesheets
+        # Cannot use it on local files (file://)
+        for css_f in CSS:
+            already_done = False
+            for css_fn in ("UsEr_", "Basic", "Mainz", "Nebraska"):
+                if css_fn in css_f and not already_done:
+                    css_f = css_f.replace("UsEr_","")
+                    fname = "/".join(["css", css_f + ".css"])
+                    urlx = self.report.build_url_fname(fname, None,
+                                                       self.uplink)
+                    links += Html("link", rel="alternate stylesheet",
+                                  title=css_f, indent=False,
+                                  media="screen", type="text/css",
+                                  href=urlx)
 
         # Link to Navigation Menus stylesheet
         if CSS[self.report.css]["navigation"]:

gramps/plugins/webreport/narrativeweb.py

@@ -1008,6 +1008,18 @@ class NavWebReport(Report):
         """
         imgs = []
 
+        # copy all screen style sheet
+        for css_f in CSS:
+            already_done = False
+            for css_fn in ("UsEr_", "Basic", "Mainz", "Nebraska", "Vis"):
+                if css_fn in css_f and not already_done:
+                    already_done = True
+                    fname = CSS[css_f]["filename"]
+                    # add images for this css
+                    imgs += CSS[css_f]["images"]
+                    css_f = css_f.replace("UsEr_","")
+                    self.copy_file(fname, css_f + ".css", "css")
+
         # copy screen style sheet
         if CSS[self.css]["filename"]:
             fname = CSS[self.css]["filename"]
@@ -1683,13 +1695,13 @@ class NavWebOptions(MenuReportOptions):
         cright.set_help(_("The copyright to be used for the web files"))
         addopt("cright", cright)
 
-        self.__css = EnumeratedListOption(('StyleSheet'), CSS["default"]["id"])
+        self.__css = EnumeratedListOption(('StyleSheet'), CSS["Basic-Ash"]["id"])
         for (dummy_fname, gid) in sorted(
                 [(CSS[key]["translation"], CSS[key]["id"])
                  for key in list(CSS.keys())]):
             if CSS[gid]["user"]:
                 self.__css.add_item(CSS[gid]["id"], CSS[gid]["translation"])
-        self.__css.set_help(_('The stylesheet to be used for the web pages'))
+        self.__css.set_help(_('The default stylesheet to be used for the pages'))
         addopt("css", self.__css)
         self.__css.connect("value-changed", self.__stylesheet_changed)
 

gramps/plugins/webstuff/webstuff.py

@@ -58,7 +58,7 @@ def load_on_reg(dbstate, uistate, plugin):
 
         # default style sheet in the options
         # Basic Ash style sheet
-        ["default",       1, _("Basic-Ash"),
+        ["Basic-Ash",       1, _("Basic-Ash"),
          path_css('Web_Basic-Ash.css'),     None, [], [] ],
 
         # Basic Blue style sheet with navigation menus
@@ -173,7 +173,8 @@ def load_on_reg(dbstate, uistate, plugin):
         list_files = os.listdir(USER_CSS)
         for cssfile in list_files:
             if cssfile.endswith(".css"):
-                CSS_FILES.append([cssfile, 1, cssfile.replace('.css', ''),
+                css_f = cssfile.replace('.css', '')
+                CSS_FILES.append(["UsEr_" + css_f, 1, css_f,
                                   os.path.join(USER_CSS,cssfile), None,
                                   looking_for_urls_in_user_css(cssfile),
                                   [] ])