Hob: add original url show function with the tooltip hyperlink for user

When case about No browser, such as running in 'Build Appliance', user can't open
the hyper link, so add this work around for user. (Checking the browser is avaiable
or not is hard by different system and browser type)

[YOCTO #2340]

(Bitbake rev: 02cc701869bceb2d0e11fe3cf51fb0582cda01b0)

Signed-off-by: Liming An <limingx.l.an@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/ui/crumbs/persistenttooltip.py

@@ -125,11 +125,17 @@ class PersistentTooltip(gtk.Window):
                 style.fg[gtk.STATE_NORMAL] = gtk.gdk.color_parse(val)
                 self.label.set_style(style)
                 break # we only care for the tooltip_fg_color
+
         self.label.set_markup(markup)
         self.label.show()
         bin.add(self.label)
         hbox.pack_end(bin, True, True, 6)
 
+        # add the original URL display for user reference
+        if 'a href' in markup:
+            hbox.set_tooltip_text(self.get_markup_url(markup))
+        hbox.show()
+
         self.connect("key-press-event", self._catch_esc_cb)
 
     """
@@ -165,3 +171,16 @@ class PersistentTooltip(gtk.Window):
     def hide(self):
         self.shown = False
         gtk.Window.hide(self)
+
+    """
+    Called to get the hyperlink URL from markup text.
+    """
+    def get_markup_url(self, markup):
+        url = "http:"
+        if markup and type(markup) == str:
+            s = markup
+            if 'http:' in s:
+                import re
+                url = re.search('(http:[^,\\ "]+)', s).group(0)
+
+        return url