Alternate download link
Just in case Curse has load issues (as occasionally happens on patch day) I have set up an alternate download page carrying the latest version of my addons. You can find it under http://www.ursbeeli.ch/m_addons.shtml

History
I have been using the Dag_TargetTarget addon for a long time. With the introduction of Patch 2.0 and the secure frames its targetting possibilities were lost. With each subsequent patch another feature of it caused an exception. I fixed one after the other for my own use, always intending to change it to make use of secure frames. The built in target of target frame just was not an option as it is too small for my liking.
I tried a few things but found that I could not get secure frames to work with Dag's Target of Target during my first tries. I then tried to start from scratch with just an empty button in order to be able to use it to target my target's target, even during combat. I then started adding features and found I had more or less duplicated what Dag had done.

However, I did not implement everything Dag had. One of these things is the target or target of target frame as I really, never used this. Another thing is the integration with MobHealth and CTMod to find out the absolute health numbers of mobs. This is handy to have for my target but I am not so interested in those details for my target's target, especially as I still have this of people in my group (say for healing).

All credit for the idea and much of the code goes to Dag, even though I rewrote the addon (pinching quite a bit from Blizzard's TargetFrame implementation.

Urbin, Dun-Morogh (EU)

Features
This addon displays target of target frame that has the same size and look and feel as the default target frame. It has optional support for displaying buffs and debuffs, class and creature type. It allows targetting the target of target by clicking on it as well as a suitable context menu by right clicking on it.

Slash commands
/utt help Show supported slash commands
/utt about Show version info
/utt status Show configuration status

/utt enable Enable Target of Target frame
/utt disable Disable Target of Target frame
/utt toggle Toggle able Target of Target frame

/utt hp Toggle display of health text on target or target frame
/utt mana Toggle display of mana text on target or target frame
/utt buff Toggle display of buffs and debuffs on target or target frame
/utt class Toggle display of class above target of target frame
/utt type Toggle display of creature type below target of target frame

/utt dock Use default position
/utt lock Lock custom position
/utt unlock Allow draging of frame to custom position


Todo list

• add clique support for healing
• add support for the red aggro edge introduced to Blizzard frames with 3.0.2
• add option frame
• convert mob percentage health using MobHealth, MobInfo2, etc values [low prio]

Version history

30200.2

• fixed GetDifficultyColour() bug

30200.1

• adjusted toc for patch 3.2

30100.1

• adjusted toc for patch 3.1
• fixed handling of buff/debuff icons to match 3.1 behaviour

30002.1

• adjusted toc for patch 3.0.2
• changed code to match the API changes of 3.0.2

20400.2

• added setting to disable hp/mana on target of target frame (suggested by canabisbv)

20400.1

• updated toc for patch 2.4.0
• added possibility to list all addons by Urbin

20300.2

• added support for ClassIcons (<file type="link">5138</file>)
• not showing zero health any more when dead (interfered with "Dead" text)

20300.1

• updated toc for patch 2.3.0

20203.3

• now also showing proper tooltips (for target of target buffs/debuffs instead of targt)
• fixed nil concatentation bug when displaying target creature type

20203.2

• now showing debuffs of target-of-target instead of target
• now checking PvP sanctuary status of target-of-target instead of target
• added curse project as weblink to about information

20203.1

• first version