feat(tooltip): html content from an element

[tomsdev]

See this thread: https://groups.google.com/forum/#!category-topic/angular-ui/bootstrap/3m-fqNQ6plM

[pkozlowski-opensource]

@tomsdev This is a very much requested feature for which we've got an issue opened already:
#220

There is also an associated pull request (#369) but it still needs more work.

The approach we've been taking so far was slightly different as the idea was not to relay on the DOM elements and their ids but rather to provide the templateUrl attribute.

At the end of the day both approaches are more or less equivalent as you can embed partials with the <script> directive if you really like to have them as part of the main template. But using templateUrl gives you additional flexibility to load popover content from a separate file if needed (and this way avoid putting in the DOM tree things that might be never shown).

In short: would be awesome to have a complete pull request for this. Would do you think of using templateUrl instead of relaying on ids of elements embedded in the main template? @joshdmiller any input?

[tomsdev]

@joshdmiller approach seems great. However, it seems that bindings with ng-model don't work.

What work is needed to have a complete pull request?

[pkozlowski-opensource]

@tomsdev Great. The PR #369 has a list of missing things. As for a complete PR we need tests and docs / demo side update.

[ajoslin]

#641 has popover-html-unsafe - if/when that is merged tooltip will come I think

[tomsdev]

No, popover-html-unsafe doesn't support angularjs bindings and directives in the content.

[chrisirhc]

Closing this as duplicate of #220.