Final version.

(file #16603)

Debug messages.

(file #16424)

I forgot to put the new files under version control in the previous submission.

(file #16236)

Changes in this version:

• extended and corrected Wiki docs in mp_create_choose_mods.cpp and mp_depcheck_select_new (or confirm_change, I don't remember which)
• replaced string concatenation with a vgettext call in mp_depcheck_select_new.cpp
• changed result_'s type to reference in gui2::tmp_create_choose_mods
• reformatted Doxygen comments
• removed the "Close" button from tmp_create_choose_mods, added "OK" and "Cancel" instead with proper support
• renamed some variables in mp_depcheck.?pp
• I apparently broke a few things in dependency checking somewhen in the past few weeks, fixed that as well
• removed maximum_width and maximum_height attributes from all new dialogs

(file #16050)

Replaced all occurrences of the foreach macro with BOOST_FOREACH.

(file #16003)

Now really removed trailing whitespaces.

(file #15940)

...and removed trailing whitespace.

(file #15812)

Right, updates keep coming...
News:

• removed the hunk for revision.hpp
• relabeled the ok button of Choose Modifications dialog to "Close" (btw, there used to be a "Done" button in the add-on manager iirc :P)
• swapped ok/cancel and yes/no button order in select new and confirm change dialogs
• moved initialize_modifications() in game_preferences.cpp, copy_keys() and contains() in mp_depcheck.cpp into an anonymous namespace so that they don't generate warnings with the -Wmissing-declarations flag
• maximized the Choose Modification dialog's height in 480 pixels
• took the chance to clean up mp::depcheck::manager::conflicts() a bit

(file #15805)

Here's a post-final version, which incorporates various improvements and fixes suggested by boucman and mordante (and a few on my own):

• added missing translatable marks (hopefully to all strings)
• modified gui2::tmp_depcheck_select_new to be more translation-friendly
• ids of missing dependencies are now listed in the error message
• fixed mp::depcheck::copy_keys
• mp::depcheck::manager::conflicts now ignores missing dependencies, those could have raised missing wml child message before
• renamed mp::depcheck::set_... functions to mp::depcheck::try_...
• changed mp::depcheck::manager::insert_element's first argument's type from string to mp::depcheck::component_type (which is an enum)
• moved mp::depcheck::manager::contains into a local helper function in mp_depcheck.cpp
• added missing wiki documentation for the gui2 parts
• added changelog entry (in fact, two changelog entries)
• license headers
• removed an obsolete TODO comment

(file #15786)

ok, I won't assign this patch to anybody while you're still working on it, please ping me on IRC once you're done so we can start reviewing it...

I've just realised that I should have added the new files to version control before diffing, so the previous patches don't really contain anything usable...

(file #15770)

Another update. I fixed a bug which prevented the game from selecting the last used era on startup, and added a short error message when the user tries to activate a scenario/era with not installed dependencies (therefore I consider missing feature 1 implemented). I also changed the WML interface, renaming the require_modification key to force_modification to avoid confusion with require_era (and to preserve the name require_modification for a future, require_era-like feature).

(file #15752)

This patch implements the toplevel modification tag and a dynamic dependency system for multiplayer add-ons (eras, mp scenarios and the brand new modifications). See the details here:
http://forums.wesnoth.org/viewtopic.php?f=10&t=36348

There're some important features still missing, but I thought I'd send the patch before it grows too big and messy.

Missing features:
* handle missing dependencies (add-ons required but not installed)
* add metadata about activated modifications to savegames
* implement a visual indication of activated modifications for non-host players