Made is_valid and dontinvalidate properties in Excuse

Use the is_valid in "html"-method to determine whether to write "Valid
candidate" or not.  This avoids the occasional:

 * Valid candidate
 * Invalidated by dependency
 * Not considered

Signed-off-by: Niels Thykier <niels@thykier.net>

britney.py

@@ -1110,7 +1110,7 @@ class Britney:
             self.excuses.append(excuse)
             return False
 
-        excuse.addhtml("Valid candidate")
+        excuse.is_valid = True
         self.excuses.append(excuse)
         return True
 
@@ -1216,7 +1216,7 @@ class Britney:
 
         # if there is nothing wrong and there is something worth doing, this is a valid candidate
         if not anywrongver and anyworthdoing:
-            excuse.addhtml("Valid candidate")
+            excuse.is_valid = True
             self.excuses.append(excuse)
             return True
         # else if there is something worth doing (but something wrong, too) this package won't be considered
@@ -1458,7 +1458,7 @@ class Britney:
         # check if there is a `force' hint for this package, which allows it to go in even if it is not updateable
         forces = [ x for x in self.hints.search('force', package=src) if self.same_source(source_u[VERSION], x.version) ]
         if forces:
-            excuse.dontinvalidate = 1
+            excuse.dontinvalidate = True
         if not update_candidate and forces:
             excuse.addhtml("Should ignore, but forced by %s" % (forces[0].user))
             update_candidate = True
@@ -1474,7 +1474,7 @@ class Britney:
 
         # if the package can be updated, it is a valid candidate
         if update_candidate:
-            excuse.addhtml("Valid candidate")
+            excuse.is_valid = True
         # else it won't be considered
         else:
             excuse.addhtml("Not considered")
@@ -1535,6 +1535,7 @@ class Britney:
                     invalid.append(valid.pop(p))
                     exclookup[x].addhtml("Invalidated by dependency")
                     exclookup[x].addhtml("Not considered")
+                    exclookup[x].is_valid = False
             i = i + 1
  
     def write_excuses(self):

excuse.py

@@ -50,7 +50,8 @@ class Excuse:
         self.daysold = None
         self.mindays = None
         self.section = None
-        self.dontinvalidate = 0
+        self._is_valid = False
+        self._dontinvalidate = False
 
         self.invalid_deps = []
         self.deps = {}
@@ -60,6 +61,22 @@ class Excuse:
         self.bugs = []
         self.htmlline = []
 
+    @property
+    def is_valid(self):
+        return self._is_valid
+
+    @is_valid.setter
+    def is_valid(self, value):
+        self._is_valid = value
+
+    @property
+    def dontinvalidate(self):
+        return self._dontinvalidate
+
+    @dontinvalidate.setter
+    def dontinvalidate(self, value):
+        self._dontinvalidate = value
+
     def set_vers(self, tver, uver):
         """Set the testing and unstable versions"""
         if tver: self.ver = (tver, self.ver[1])
@@ -141,5 +158,7 @@ class Excuse:
         for (n,a) in self.break_deps:
             if n not in self.deps:
                 res += "<li>Ignoring %s depends: <a href=\"#%s\">%s</a>\n" % (a, n, n)
+        if self.is_valid:
+            res += "<li>Valid candidate</li>\n"
         res = res + "</ul>\n"
         return res