+" Cycle verbose display of toolbar stuff.
+fun! Cycle_VerboseStatusLine()
+ call Iain_Vars()
+ let b:iainverbose = ! b:iainverbose
+ call Show_StatusLine()
+endfun
+
+" Toggle quickfix window.
+fun! Cycle_Quickfix()
+ if g:quickfixing == 1
+ cclose
+ let g:quickfixing=0
+ else
+ copen
+ endif
+endfun
+
+" Swap hex/decimal statusline with \x.
+call Mapping("x", ":call Cycle_HexStatusLine()<CR>:<CR>")
+" Change statusline verbosity with \v.
+call Mapping("v", ":call Cycle_VerboseStatusLine()<CR>:<CR>")
+" Cycle list styles with \l.
+call Mapping("l", ":call Cycle_List()<CR>:<CR>")
+" Toggle tags with \t.
+call Mapping("t", ":Tlist<CR>")
+" Change foldmethod with \f.
+call Mapping("f", ":se foldenable!<CR>:<CR>")
+" Toggle quickfix window with \q.
+call Mapping("q", ":call Cycle_Quickfix()<CR>:<CR>")
+" Rerun filetype detection with \s. The s is for syntax, as this will be
+" updated as a side-effect.
+call Mapping("s", ":filetype detect<CR>:<CR>")
+" Toggle marks with \m.
+call Mapping("m", ":call <SID>Cycle_Signs(1)<CR>:<CR>")
+
+fun! <SID>Iain_Colour(colour)
+ if &t_Co == 88
+ if a:colour == "darkblue"
+ return 17
+ elseif a:colour == "darkmagenta"
+ return 33
+ elseif a:colour == "darkred"
+ return 32
+ elseif a:colour == "red"
+ return 64
+ endif
+ elseif &t_Co == 256
+ if a:colour == "darkblue"
+ return 17
+ elseif a:colour == "darkmagenta"
+ return 90
+ elseif a:colour == "darkred"
+ return 88
+ elseif a:colour == "red"
+ return 196
+ endif
+ else
+ return a:colour
+ endif
+endfun
+
+" Change status bar colour when various things happen.
+" Flags: H/h: Cursor held/moved.
+" F/f: Focus gained/lost.
+" I/i: Insert mode entered/left.
+fun! Highlight_StatusLine(flag)
+ " Get current status.
+ call Iain_Vars()
+
+ " Change the status based on the flag. XXX: Does Vim let us to do flags?
+ let re = "[" . tolower(a:flag) . toupper(a:flag) . "]"
+ let b:iainstatus = substitute(b:iainstatus, re, a:flag, "")
+
+ let l:normalcolour = "darkblue"
+ let l:editingcolour = "darkmagenta"
+ let l:warningcolour = "darkred"
+ let l:readonlycolour = "red"
+
+ " Default colour.
+ let l:colour = l:normalcolour
+ " Maybe override depending on status.
+ if b:iainstatus =~# "H"
+ if b:iainstatus =~# "I"
+ " Held in insert mode. Add extra highlight if we don't have focus.
+ if b:iainstatus =~# "f"
+ let l:colour = l:warningcolour
+ else
+ let l:colour = l:editingcolour
+ endif
+ endif
+ else
+ if b:iainstatus =~# "I"
+ " Regular insert mode.
+ let l:colour = l:editingcolour
+ endif
+ endif
+
+ " Override again if readonly.
+ if l:colour != l:normalcolour
+ if getbufvar("", "&ro")
+ let l:colour = l:readonlycolour
+ endif
+ endif
+
+ let l:termcolour = <SID>Iain_Colour(l:colour)
+
+ exec "highlight StatusLine gui=bold term=bold cterm=bold guifg=white guibg=" . l:colour . " ctermfg=white ctermbg=" . l:termcolour