1064089 - Calendar view starts with broken view

Status: NEW

(Calendar :: Calendar Frontend, defect)

Description

[Ian Neal]

STR
1/ Start SeaMonkey with lightning installed
2/ Open MailNews
3/ Select Calendar from "Events and Tasks" Menu
4/ Select Calendar tab
5/ Look at view

Expected Result
1/ Properly spaced lines with times down left hand side

Actual Result
1/ spacers with class="calendar-event-column-linebox" only have a height of 6 causing a compressed view

Workaround
1/ Switch to different view and back again (e.g. to Day and then back to Week) - spacers now have a height = 57

Comment 1

[Ian Neal]

The height appears to be set at http://mxr.mozilla.org/comm-central/source/calendar/base/content/calendar-multiday-view.xml#685

Comment 2

[Ian Neal]

Attachment: Screenshot of issue

Comment 3

[Decathlon]

The issue is caused by the value of this.mPixPerMin that is 0.1 i.e. the minimum allowed for that variable and this happens because in the method onResize() the property 
  scrollbox.boxObject.height
( http://mxr.mozilla.org/comm-central/source/calendar/base/content/calendar-multiday-view.xml#2696 ) 
always returns zero every time the method is called during the startup.
After the startup if you resize the window or change the view, the property "height" returns a correct value and the bug disappears.

A similar case happens also with Thunderbird but the bug doesn't arise because during the startup, after a few calls to onResize(), the property scrollbox.boxObject.height starts to return values different than 0.

Previous version on Thunderbird and SeaMonkey (I tested with SM 2.25 and LG 3.0b1) don't have the problem because scrollbox.boxObject.height is never 0.
Basically the bug should be related to bug 998260.

Comment 5

[Wayne Mery (:wsmwk)]

Now that Calendar is integrated with Thunderbird, is this still of value?