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require "rendertext"
require "keys"
require "graphics"
require "font"
require "inputbox"
require "dialog"
require "extentions"

FileSearcher = {
title_H = 40, -- title height
spacing = 36, -- spacing between lines
foot_H = 28, -- foot height
margin_H = 10, -- horisontal margin

-- state buffer
dirs = {},
files = {},
result = {},
items = 0,
page = 0,
current = 1,
oldcurrent = 1,
}

function FileSearcher:readDir()
self.dirs = {self.path}
self.files = {}
while #self.dirs ~= 0 do
new_dirs = {}
-- handle each dir
for __, d in pairs(self.dirs) do
-- handle files in d
for f in lfs.dir(d) do
local file_type = string.lower(string.match(f, ".+%.([^.]+)") or "")
if lfs.attributes(d.."/"..f, "mode") == "directory" and f ~= "." and f~= ".." then
table.insert(new_dirs, d.."/"..f)
elseif ext:getReader(file_type) then
file_entry = {dir=d, name=f,}
table.insert(self.files, file_entry)
--Debug("file:"..d.."/"..f)
end
end
end
self.dirs = new_dirs
end
end

function FileSearcher:setPath(newPath)
self.path = newPath
self:readDir()
self.items = #self.files
--@TODO check none found 19.02 2012
if self.items == 0 then
return nil
end
self.page = 1
self.current = 1
return true
end

function FileSearcher:setSearchResult(keywords)
self.result = {}
if keywords == " " then -- one space to show all files
self.result = self.files
else
for __,f in pairs(self.files) do
if string.find(string.lower(f.name), string.lower(keywords)) then
table.insert(self.result, f)
end
end
end
self.keywords = keywords
self.items = #self.result
self.page = 1
self.current = 1
end

function FileSearcher:init(search_path)
self:setPath(search_path or "/mnt/us/documents")
self:addAllCommands()
end

function FileSearcher:prevItem()
if self.current == 1 then
if self.page > 1 then
self.current = self.perpage
self.page = self.page - 1
self.pagedirty = true
end
else
self.current = self.current - 1
self.markerdirty = true
end
end

function FileSearcher:nextItem()
if self.current == self.perpage then
if self.page < (self.items / self.perpage) then
self.current = 1
self.page = self.page + 1
self.pagedirty = true
end
else
if self.page ~= math.floor(self.items / self.perpage) + 1
or self.current + (self.page-1)*self.perpage < self.items then
self.current = self.current + 1
self.markerdirty = true
end
end
end

function FileSearcher:addAllCommands()
self.commands = Commands:new{}
self.commands:add(KEY_L, nil, "L",
"last documents",
function(self)
FileHistory:init()
FileHistory:choose("")
self.pagedirty = true
end
)
self.commands:add(KEY_H, nil, "H",
"show help page",
function(self)
HelpPage:show(0, G_height, self.commands)
self.pagedirty = true
end
)
self.commands:add({KEY_FW_RIGHT, KEY_I}, nil, "joypad right",
"document details",
function(self)
file_entry = self.result[self.perpage*(self.page-1)+self.current]
FileInfo:show(file_entry.dir,file_entry.name)
self.pagedirty = true
end
)
self.commands:add(KEY_FW_UP, nil, "joypad up",
"goto previous item",
function(self)
self:prevItem()
end
)
self.commands:add(KEY_FW_DOWN, nil, "joypad down",
"goto next item",
function(self)
self:nextItem()
end
)
self.commands:add({KEY_PGFWD, KEY_LPGFWD}, nil, ">",
"next page",
function(self)
if self.page < (self.items / self.perpage) then
if self.current + self.page*self.perpage > self.items then
self.current = self.items - self.page*self.perpage
end
self.page = self.page + 1
self.pagedirty = true
else
self.current = self.items - (self.page-1)*self.perpage
self.markerdirty = true
end
end
)
self.commands:add({KEY_PGBCK, KEY_LPGBCK}, nil, "<",
"previous page",
function(self)
if self.page > 1 then
self.page = self.page - 1
self.pagedirty = true
else
self.current = 1
self.markerdirty = true
end
end
)
self.commands:add(KEY_S, nil, "S",
"invoke search inputbox",
function(self)
old_keywords = self.keywords
self.keywords = InputBox:input(G_height - 100, 100,
"Search:", old_keywords)
if self.keywords then
self:setSearchResult(self.keywords)
else
self.keywords = old_keywords
end
self.pagedirty = true
end
)
self.commands:add({KEY_F, KEY_AA}, nil, "F",
"change font faces",
function(self)
Font:chooseFonts()
self.pagedirty = true
end
)
self.commands:add({KEY_ENTER, KEY_FW_PRESS}, nil, "Enter",
"open selected item",
function(self)
file_entry = self.result[self.perpage*(self.page-1)+self.current]
file_full_path = file_entry.dir .. "/" .. file_entry.name

openFile(file_full_path)
--reset height and item index if screen has been rotated
local item_no = self.perpage * (self.page - 1) + self.current
self.perpage = math.floor(G_height / self.spacing) - 2
self.current = item_no % self.perpage
self.page = math.floor(item_no / self.perpage) + 1

self.pagedirty = true
end
)
self.commands:add({KEY_DEL}, nil, "Del",
"delete document",
function(self)
file_entry = self.result[self.perpage*(self.page-1)+self.current]
local file_to_del = file_entry.dir .. "/" .. file_entry.name
InfoMessage:show("Press \'Y\' to confirm... ",0)
while true do
ev = input.saveWaitForEvent()
ev.code = adjustKeyEvents(ev)
if ev.type == EV_KEY and ev.value ~= EVENT_VALUE_KEY_RELEASE then
if ev.code == KEY_Y then
-- delete the file itself
os.remove(file_to_del)
-- and its history file, if any
os.remove(DocToHistory(file_to_del))
-- to avoid showing just deleted file
self:init( self.path )
self:choose(self.keywords)
end
self.pagedirty = true
break
end -- if ev.type == EV_KEY
end -- while
end
)
self.commands:add({KEY_SPACE}, nil, "Space",
"refresh page manually",
function(self)
self.pagedirty = true
end
)
self.commands:add(KEY_BACK, nil, "Back",
"back",
function(self)
return "break"
end
)
end

function FileSearcher:choose(keywords)
self.perpage = math.floor(G_height / self.spacing) - 2
self.pagedirty = true
self.markerdirty = false


-- if given keywords, set new result according to keywords.
-- Otherwise, display the previous search result.
if keywords then
self:setSearchResult(keywords)
end

while true do
local cface = Font:getFace("cfont", 22)
local tface = Font:getFace("tfont", 25)
local fface = Font:getFace("ffont", 16)

if self.pagedirty then
self.markerdirty = true
fb.bb:paintRect(0, 0, G_width, G_height, 0)

-- draw menu title
DrawTitle("Search Results for \'"..self.keywords.."\'".." ("..tostring(self.items).." hits)",self.margin_H,0,self.title_H,3,tface)
-- draw results
local c
if self.items == 0 then -- nothing found
y = self.title_H + self.spacing * 2
renderUtf8Text(fb.bb, self.margin_H, y, cface,
"Sorry, no match found.", true)
renderUtf8Text(fb.bb, self.margin_H, y + self.spacing, cface,
"Please try a different keyword.", true)
self.markerdirty = false
else -- found something, draw it
for c = 1, self.perpage do
local i = (self.page - 1) * self.perpage + c
if i <= self.items then
y = self.title_H + (self.spacing * c) + 4
local ftype = string.lower(string.match(self.result[i].name, ".+%.([^.]+)") or "")
DrawFileItem(self.result[i].name,self.margin_H,y,ftype)
end
end
end
-- draw footer
all_page = math.ceil(self.items/self.perpage)
DrawFooter("Page "..self.page.." of "..all_page,fface,self.foot_H)
end

if self.markerdirty then
if not self.pagedirty then
if self.oldcurrent > 0 then
y = self.title_H + (self.spacing * self.oldcurrent) + 12
fb.bb:paintRect(self.margin_H, y, G_width - 2 * self.margin_H, 3, 0)
fb:refresh(1, self.margin_H, y, G_width - 2 * self.margin_H, 3)
end
end
-- draw new marker line
y = self.title_H + (self.spacing * self.current) + 12
fb.bb:paintRect(self.margin_H, y, G_width - 2 * self.margin_H, 3, 15)
if not self.pagedirty then
fb:refresh(1, self.margin_H, y, G_width - 2 * self.margin_H, 3)
end
self.oldcurrent = self.current
self.markerdirty = false
end

if self.pagedirty then
fb:refresh(0)
self.pagedirty = false
end

local ev = input.saveWaitForEvent()
ev.code = adjustKeyEvents(ev)
if ev.type == EV_KEY and ev.value ~= EVENT_VALUE_KEY_RELEASE then
keydef = Keydef:new(ev.code, getKeyModifier())
Debug("key pressed: "..tostring(keydef))

command = self.commands:getByKeydef(keydef)
if command ~= nil then
Debug("command to execute: "..tostring(command))
ret_code = command.func(self, keydef)
else
Debug("command not found: "..tostring(command))
end

if ret_code == "break" then
break
end

if self.selected_item ~= nil then
Debug("# selected "..self.selected_item)
return self.selected_item
end
end -- if
end -- while true
return nil
end
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