require "rendertext" require "keys" require "graphics" require "font" require "filesearcher" require "inputbox" require "selectmenu" FileChooser = { -- Class vars: -- spacing between lines spacing = 40, -- state buffer dirs = nil, files = nil, items = 0, path = "", page = 1, current = 1, oldcurrent = 0, exception_message = nil } function getAbsolutePath(aPath) local abs_path if not aPath then abs_path = aPath elseif aPath:match('^//') then abs_path = aPath:sub(2) elseif aPath:match('^/') then abs_path = aPath elseif #aPath == 0 then abs_path = '/' else local curr_dir = lfs.currentdir() abs_path = aPath if lfs.chdir(aPath) then abs_path = lfs.currentdir() lfs.chdir(curr_dir) end --print("rel: '"..aPath.."' abs:'"..abs_path.."'") end return abs_path end function FileChooser:readDir() self.dirs = {} self.files = {} for f in lfs.dir(self.path) do if lfs.attributes(self.path.."/"..f, "mode") == "directory" and f ~= "." and not (f==".." and self.path=="/") and not string.match(f, "^%.[^.]") then --print(self.path.." -> adding: '"..f.."'") table.insert(self.dirs, f) else local file_type = string.lower(string.match(f, ".+%.([^.]+)") or "") if file_type == "djvu" or file_type == "pdf" or file_type == "xps" or file_type == "cbz" or file_type == "epub" or file_type == "txt" or file_type == "rtf" or file_type == "htm" or file_type == "html" or file_type == "fb2" or file_type == "chm" then table.insert(self.files, f) end end end --@TODO make sure .. is sortted to the first item 16.02 2012 table.sort(self.dirs) table.sort(self.files) end function FileChooser:setPath(newPath) local curr_path = self.path self.path = getAbsolutePath(newPath) local readdir_ok, exc = pcall(self.readDir,self) if(not readdir_ok) then print("readDir error: "..tostring(exc)) self.exception_message = exc return self:setPath(curr_path) else self.items = #self.dirs + #self.files if self.items == 0 then return nil end self.page = 1 self.current = 1 return true end end function FileChooser:choose(ypos, height) local perpage = math.floor(height / self.spacing) - 2 local pagedirty = true local markerdirty = false local prevItem = function () if self.current == 1 then if self.page > 1 then self.current = perpage self.page = self.page - 1 pagedirty = true end else self.current = self.current - 1 markerdirty = true end end local nextItem = function () if self.current == perpage then if self.page < (self.items / perpage) then self.current = 1 self.page = self.page + 1 pagedirty = true end else if self.page ~= math.floor(self.items / perpage) + 1 or self.current + (self.page-1)*perpage < self.items then self.current = self.current + 1 markerdirty = true end end end while true do local cface = Font:getFace("cfont", 25) local fface = Font:getFace("ffont", 16) if pagedirty then fb.bb:paintRect(0, ypos, fb.bb:getWidth(), height, 0) local c for c = 1, perpage do local i = (self.page - 1) * perpage + c if i <= #self.dirs then -- resembles display in midnight commander: adds "/" prefix for directories renderUtf8Text(fb.bb, 39, ypos + self.spacing*c, cface, "/", true) renderUtf8Text(fb.bb, 50, ypos + self.spacing*c, cface, self.dirs[i], true) elseif i <= self.items then renderUtf8Text(fb.bb, 50, ypos + self.spacing*c, cface, self.files[i-#self.dirs], true) end end all_page = math.ceil(self.items/perpage) renderUtf8Text(fb.bb, 5, ypos + self.spacing * perpage + 42, fface, "Page "..self.page.." of "..all_page, true) local msg = self.exception_message and self.exception_message:match("[^%:]+:%d+: (.*)") or "Path: "..self.path self.exception_message = nil renderUtf8Text(fb.bb, 5, ypos + self.spacing * (perpage+1) + 27, fface, msg, true) markerdirty = true end if markerdirty then if not pagedirty then if self.oldcurrent > 0 then fb.bb:paintRect(30, ypos + self.spacing*self.oldcurrent + 10, fb.bb:getWidth() - 60, 3, 0) fb:refresh(1, 30, ypos + self.spacing*self.oldcurrent + 10, fb.bb:getWidth() - 60, 3) end end fb.bb:paintRect(30, ypos + self.spacing*self.current + 10, fb.bb:getWidth() - 60, 3, 15) if not pagedirty then fb:refresh(1, 30, ypos + self.spacing*self.current + 10, fb.bb:getWidth() - 60, 3) end self.oldcurrent = self.current markerdirty = false end if pagedirty then fb:refresh(0, 0, ypos, fb.bb:getWidth(), height) pagedirty = false end local ev = input.saveWaitForEvent() --print("key code:"..ev.code) ev.code = adjustKeyEvents(ev) if ev.type == EV_KEY and ev.value == EVENT_VALUE_KEY_PRESS then if ev.code == KEY_FW_UP then prevItem() elseif ev.code == KEY_FW_DOWN then nextItem() elseif ev.code == KEY_F then -- invoke fontchooser menu local fonts_menu = SelectMenu:new{ menu_title = "Fonts Menu", item_array = Font:getFontList(), } local re, font = fonts_menu:choose(0, height) if re then Font.fontmap["cfont"] = font Font:update() end pagedirty = true elseif ev.code == KEY_S then -- invoke search input keywords = InputBox:input(height-100, 100, "Search:") if keywords then -- call FileSearcher --[[ This might looks a little bit dirty for using callback. But I cannot come up with a better solution for renewing the height arguemtn according to screen rotation mode. The callback might also be useful for calling system settings menu in the future. --]] return nil, function() FileSearcher:init( self.path ) FileSearcher:choose(keywords) end end pagedirty = true elseif ev.code == KEY_PGFWD or ev.code == KEY_LPGFWD then if self.page < (self.items / perpage) then if self.current + self.page*perpage > self.items then self.current = self.items - self.page*perpage end self.page = self.page + 1 pagedirty = true else self.current = self.items - (self.page-1)*perpage markerdirty = true end elseif ev.code == KEY_PGBCK or ev.code == KEY_LPGBCK then if self.page > 1 then self.page = self.page - 1 pagedirty = true else self.current = 1 markerdirty = true end elseif ev.code == KEY_ENTER or ev.code == KEY_FW_PRESS then local newdir = self.dirs[perpage*(self.page-1)+self.current] if newdir == ".." then local path = string.gsub(self.path, "(.*)/[^/]+/?$", "%1") self:setPath(path) elseif newdir then local path = self.path.."/"..newdir self:setPath(path) else return self.path.."/"..self.files[perpage*(self.page-1)+self.current - #self.dirs] end pagedirty = true elseif ev.code == KEY_BACK or ev.code == KEY_HOME then return nil end end end end