350463 - Warn user if occurrences of a repeating event overlap / if a occurrence starts before the previous one ends

Status: NEW

(Calendar :: Dialogs, defect)

Description

[Andreas Treumann]

- create an event form 09/01/06 10:00, to 09/05/06 11:00
- and create for this event this recurrence: daily, repeat until 09/05/06

The result are recurring events from 09/01/06 to 09/09/06, starting with one event on the first day, two at the second day at the same time, and so on. After 09/05/06 the count of events descend.

Comment 1

[Sebastian Schwieger]

While a possible use case does not jump to my mind immediately, I don't think we should prevent it from happening.

Comment 2

[Philipp Kewisch [:Fallen][📱📆]]

We could solve this by warning the user if the second occurrence starts before the first one ends. The user may choose to ignore the warning, but doesn't have to.

Comment 3

[Truong Hoang Phuoc]

Hello. I'm new here and I would like to ask if this bug is still unassigned? Can I work on this bug?

Comment 4

[Philipp Kewisch [:Fallen][📱📆]]

Hi, feel free to work on this bug. If you are also from NUS, I suggest talking to your colleagues on how to get calendar running, the first guide is here: https://developer.mozilla.org/En/Simple_Thunderbird_build

Before fixing this bug, I might have another bug for you that will clearly aid in fixing this one. Right now we have no means other than a popup alert to show that there is an error. What would be great is to use a XUL notificationbox element where the error messages can be collected.

With that in place, fixing this bug is just a matter of checking for changes to the date fields and the recurrence rule and then adding an error message to the notificationbox.

How does this sound to you?

Comment 5

[Truong Hoang Phuoc]

Thank for your guide. I will try do it.

Comment 6

[Truong Hoang Phuoc]

I have set up the developing environment and I built Thunderbird with Lightning. 
Can you give me some advice on where to start? I am looking at this file http://mxr.mozilla.org/comm-central/source/calendar/base/content/dialogs/calendar-event-dialog-recurrence.xul. Can you give me some specific advice on how to fix this bug?

Comment 8

[Josh Matthews [:jdm]]

Philipp, could you provide some guidance here?

Comment 9

[Philipp Kewisch [:Fallen][📱📆]]

Josh, I had been conversing with the assignee via email and irc, but I haven't heard from him in a long time.

Truong Hoang Phuoc, can you confirm that you're still working on this bug?

Comment 10

[Zulfa]

Hi Philipp

I would like to be assigned to this bug, If is unassigned, i am new here and this would be a first good bug for me to tackle.
Thanks.

Comment 11

[Philipp Kewisch [:Fallen][📱📆]]

Hi Zulfa,

thanks for tackling this bug. Please see comment 4 on how to get started. The notificationbox part has now been implemented, so all you have to do is use it.

If you need further help, pleases check on irc.mozilla.org. If you have a build error, please check #maildev or #build. If you have an error related to Lightning, please check #calendar. My nickname is "Fallen".

Comment 12

[Falguni Islam]

Hello, I am new to contributing to Bugzilla can you assigned me to this issue so that I can learn to fix these bugs and also suggest to me how can Is start working on this bug to fix it.

Comment 13

[Wayne Mery (:wsmwk)]

(In reply to Falguni Islam from comment #12)

Hello, I am new to contributing to Bugzilla can you assigned me to this issue so that I can learn to fix these bugs and also suggest to me how can Is start working on this bug to fix it.

Falguni, The basics are at https://www.thunderbird.net/en-US/get-involved/#development

Comment 14

[Yavnika Garg]

Heyy! I am new to contributing to Mozilla. Can I take this up?

Comment 15

[Wayne Mery (:wsmwk)]

(In reply to Yavnika Garg from comment #14)

Heyy! I am new to contributing to Mozilla. Can I take this up?

Sure. the basics are at The basics are at https://www.thunderbird.net/en-US/get-involved/#development

Comment 16

[omega judith]

hello am an outreachy applicant, can please get this assigned to me?

Comment 17

[cynthiatimoty]

is anyone working on this bug?