# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1422643047 -3600
# Node ID b060f0b6e23835fc53da0e0cbe91be7afa2e41d3
# Parent  76cc1f55a328abe570e7d2f0d2e72313bef4f9f3
Added support for hiding/showing empty placeholder rows in the calendar.

diff -r 76cc1f55a328 -r b060f0b6e238 htdocs/styles.css
--- a/htdocs/styles.css	Fri Jan 30 18:24:43 2015 +0100
+++ b/htdocs/styles.css	Fri Jan 30 19:37:27 2015 +0100
@@ -49,6 +49,8 @@
     color: #009;
 }
 
+/* Selection of slots/periods for new events. */
+
 input.newevent {
     display: none;
 }
@@ -76,3 +78,21 @@
     background-color: #af8;
     text-decoration: underline;
 }
+
+/* Hiding/showing unused slots/periods. */
+
+input#hideslots {
+    display: none;
+}
+
+input#hideslots:checked ~ p label.enable[for=hideslots] {
+    display: none;
+}
+
+input#hideslots:not(:checked) ~ p label.disable[for=hideslots] {
+    display: none;
+}
+
+input#hideslots:checked ~ table tr.slot.daystart.empty {
+    display: none;
+}
diff -r 76cc1f55a328 -r b060f0b6e238 imip_manager.py
--- a/imip_manager.py	Fri Jan 30 18:24:43 2015 +0100
+++ b/imip_manager.py	Fri Jan 30 19:37:27 2015 +0100
@@ -618,6 +618,16 @@
         page.input(name="newevent", type="submit", value="New event", id="newevent")
         page.p.close()
 
+        # Show a control for hiding empty slots.
+        # The positioning of the control, paragraph and table are important here.
+
+        page.input(name="hideslots", type="checkbox", value="hide", id="hideslots")
+
+        page.p()
+        page.label("Hide unused time periods", for_="hideslots", class_="enable")
+        page.label("Show unused time periods", for_="hideslots", class_="disable")
+        page.p.close()
+
         freebusy = self.store.get_freebusy(self.user)
 
         if not freebusy:
@@ -817,7 +827,7 @@
 
         page = self.page
 
-        # Produce a row for each time point.
+        # Produce a row for each interval.
 
         intervals = list(intervals)
         intervals.sort()
@@ -825,7 +835,17 @@
         for point, endpoint in intervals:
             continuation = point == get_start_of_day(point)
 
-            page.tr()
+            # Some rows contain no period details and are marked as such.
+
+            have_active = reduce(lambda x, y: x or y, [slots.get(point) for slots in groups], None)
+
+            css = " ".join(
+                ["slot"] +
+                (not have_active and ["empty"] or []) +
+                (continuation and ["daystart"] or [])
+                )
+
+            page.tr(class_=css)
             page.th(class_="timeslot")
             self._time_point(point, endpoint)
             page.th.close()