Add support for gui/journal in legends mode

Author: wiktor-obrebski

gui/journal.lua

@@ -313,19 +313,17 @@ function JournalScreen:onDismiss()
 end
 
 function main(options)
-    local fortress_worldmap_mode = not dfhack.isMapLoaded() and dfhack.world.isFortressMode()
-    local fortress_mode = dfhack.isMapLoaded() and dfhack.world.isFortressMode()
-    local adventure_mode = dfhack.isMapLoaded() and dfhack.world.isAdventureMode()
+    local journal_context_mode = journal_context.detect_journal_context_mode()
 
-    if not fortress_mode and not adventure_mode and not fortress_worldmap_mode then
-        qerror('journal requires a fortress/adventure map to be loaded')
+    if journal_context_mode == nil then
+        qerror('journal requires a fortress/adventure/world/legends map to be loaded')
     end
 
     local save_layout = options and options.save_layout
     local overrided_context_mode = options and options.context_mode
 
     local context_mode = overrided_context_mode == nil and
-        journal_context.detect_journal_context_mode() or overrided_context_mode
+        journal_context_mode or overrided_context_mode
 
     view = view and view:raise() or JournalScreen{
         save_prefix=options and options.save_prefix or '',

internal/journal/journal_context.lua

@@ -10,7 +10,8 @@ local AdventurerJournalContext = reqscript('internal/journal/contexts/adventure'
 JOURNAL_CONTEXT_MODE = {
   FORTRESS='fortress',
   ADVENTURE='adventure',
-  WORLDMAP='WORLDMAP',
+  WORLDMAP='worldmap',
+  LEGENDS='legends',
   DUMMY='dummy'
 }
 
@@ -21,8 +22,10 @@ function detect_journal_context_mode()
     return JOURNAL_CONTEXT_MODE.FORTRESS
   elseif dfhack.isMapLoaded() and dfhack.world.isAdventureMode() then
     return JOURNAL_CONTEXT_MODE.ADVENTURE
+  elseif dfhack.world.isLegends() then
+    return JOURNAL_CONTEXT_MODE.LEGENDS
   else
-    qerror('unsupported game mode')
+    return nil
   end
 end
 
@@ -44,6 +47,10 @@ function journal_context_factory(journal_context_mode, save_prefix)
   elseif journal_context_mode == JOURNAL_CONTEXT_MODE.WORLDMAP then
     local world_id =  df.global.world.cur_savegame.world_header.id1
 
+    return WorldmapJournalContext{save_prefix=save_prefix, world_id=world_id}
+  elseif journal_context_mode == JOURNAL_CONTEXT_MODE.LEGENDS then
+    local world_id =  df.global.world.cur_savegame.world_header.id1
+
     return WorldmapJournalContext{save_prefix=save_prefix, world_id=world_id}
   elseif journal_context_mode == JOURNAL_CONTEXT_MODE.DUMMY then
     return DummyJournalContext{}