# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1422570678 -3600
# Node ID d04da7398c2a300695715694695e5b404c269162
# Parent  7e65d77e943e358dbd1cc6d1e886abcc2a59a32f
Added hidden radio buttons and pop-up labels selecting them, so that the start
time of a new event can be defined.

diff -r 7e65d77e943e -r d04da7398c2a htdocs/styles.css
--- a/htdocs/styles.css	Thu Jan 29 22:55:29 2015 +0100
+++ b/htdocs/styles.css	Thu Jan 29 23:31:18 2015 +0100
@@ -48,3 +48,31 @@
 td.event a {
     color: #009;
 }
+
+input.newevent {
+    display: none;
+}
+
+.container {
+    position: relative;
+}
+
+.popup {
+    display: none;
+    position: absolute;
+    top: 0;
+    left: 0;
+}
+
+.container:hover .popup,
+.container:focus .popup {
+    display: block;
+    border: 1px solid #000;
+    padding: 4px;
+    background-color: #fff;
+}
+
+input.newevent:checked ~ .timepoint {
+    background-color: #af8;
+    text-decoration: underline;
+}
diff -r 7e65d77e943e -r d04da7398c2a imip_manager.py
--- a/imip_manager.py	Thu Jan 29 22:55:29 2015 +0100
+++ b/imip_manager.py	Thu Jan 29 23:31:18 2015 +0100
@@ -490,8 +490,6 @@
 
         self.page.div(id="participants")
 
-        self.page.form(method="POST")
-
         self.page.p("Participants for scheduling:")
 
         for i, participant in enumerate(participants):
@@ -505,8 +503,6 @@
         self.page.input(name="add-participant", type="submit", value="Add")
         self.page.p.close()
 
-        self.page.form.close()
-
         self.page.div.close()
 
         return participants
@@ -544,9 +540,19 @@
         self.new_page(title="Calendar")
         page = self.page
 
+        # Form controls are used in various places on the calendar page.
+
+        page.form(method="POST")
+
         self.show_requests_on_page()
         participants = self.show_participants_on_page()
 
+        # Show a button for scheduling a new event.
+
+        page.p()
+        page.input(name="newevent", type="submit", value="New event", id="newevent")
+        page.p.close()
+
         freebusy = self.store.get_freebusy(self.user)
 
         if not freebusy:
@@ -655,6 +661,10 @@
         self.show_calendar_days(days, partitioned_groups, partitioned_group_types, group_columns)
         page.table.close()
 
+        # End the form region.
+
+        page.form.close()
+
     def show_calendar_participant_headings(self, group_types, group_sources, group_columns):
 
         """
@@ -740,7 +750,8 @@
 
             page.tr()
             page.th(class_="timeslot")
-            page.add(self.format_time(point, "long"))
+            self._time_point(point)
+            page.span(self.format_time(point, "long"), class_="timepoint")
             page.th.close()
 
             # Obtain slots for the time point from each group.
@@ -753,7 +764,9 @@
                 # the colspan is adjusted to be 1, not 0.
 
                 if not active:
-                    page.td("", class_="empty", colspan=max(columns, 1))
+                    page.td(class_="empty container", colspan=max(columns, 1))
+                    self._empty_slot(point)
+                    page.td.close()
                     continue
 
                 slots = slots.items()
@@ -806,17 +819,30 @@
 
                             page.td.close()
                     else:
-                        page.td("", class_="empty")
+                        page.td(class_="empty container")
+                        self._empty_slot(point)
+                        page.td.close()
 
                 # Pad with empty columns.
 
                 i = columns - len(active)
                 while i > 0:
                     i -= 1
-                    page.td("", class_="empty")
+                    page.td(class_="empty container")
+                    self._empty_slot(point)
+                    page.td.close()
 
             page.tr.close()
 
+    def _time_point(self, point):
+        pointstr = format_datetime(point)
+        self.page.input(name="start", type="radio", value=pointstr, id="start-%s" % pointstr, class_="newevent")
+
+    def _empty_slot(self, point):
+        page = self.page
+        pointstr = format_datetime(point)
+        page.label("Start a new event at this time", class_="newevent popup", for_="start-%s" % pointstr)
+
     def select_action(self):
 
         "Select the desired action and show the result."