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filehistory.lua
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filehistory.lua
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require "rendertext"
require "keys"
require "graphics"
require "font"
require "inputbox"
require "dialog"
require "filesearcher"
require "settings"
require "dialog"
FileHistory = {
title_H = 40, -- title height
spacing = 36, -- spacing between lines
foot_H = 28, -- foot height
margin_H = 10, -- horisontal margin
-- state buffer
history_files = {},
files = {},
result = {},
items = 0,
page = 0,
current = 1,
oldcurrent = 1,
commands = nil,
}
function FileHistory:init(history_path)
self:setPath("history")
-- to initialize only once
if not self.commands then self:addAllCommands() end
end
function FileHistory:setPath(newPath)
self.path = newPath
self:readDir("-c ")
self.items = #self.files
if self.items == 1 then
return nil
end
self.page = 1
self.current = 1
return true
end
function FileHistory:readDir(order_criteria)
self.history_files = {}
self.files = {}
local p = io.popen("ls "..order_criteria.."-1 "..self.path)
for f in p:lines() do
-- insert history files
table.insert(self.history_files, {dir=self.path, name=f})
-- and corresponding path & file items
table.insert(self.files, {dir=HistoryToPath(f), name=HistoryToName(f)})
end
p:close()
end
function FileHistory:setSearchResult(keywords)
self.result = {}
if keywords == "" or keywords == " " then
-- show all history
self.result = self.files
else
-- select history files with keywords in the filename
for __,f in pairs(self.files) do
if string.find(string.lower(f.name), keywords) then
table.insert(self.result,f)
end
end
end
self.keywords = keywords
self.items = #self.result
self.page = 1
self.current = 1
return self.items
end
function FileHistory: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 FileHistory: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 FileHistory:addAllCommands()
self.commands = Commands:new{}
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_UP, nil, "joypad up",
_("previous item"),
function(self)
self:prevItem()
end
)
self.commands:add(KEY_FW_DOWN, nil, "joypad down",
_("next item"),
function(self)
self:nextItem()
end
)
-- NuPogodi, 01.10.12: fast jumps to items at positions 10, 20, .. 90, 0% within the list
local numeric_keydefs, i = {}
for i=1, 10 do numeric_keydefs[i]=Keydef:new(KEY_1+i-1, nil, tostring(i%10)) end
self.commands:addGroup("[1, 2 .. 9, 0]", numeric_keydefs,
_("item at position 0%, 10% .. 90%, 100%"),
function(self)
local target_item = math.ceil(self.items * (keydef.keycode-KEY_1) / 9)
self.current, self.page, self.markerdirty, self.pagedirty =
gotoTargetItem(target_item, self.items, self.current, self.page, self.perpage)
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_G, nil, "G", -- NuPogodi, 01.10.12: goto page No.
_("goto page"),
function(self)
local n = math.ceil(self.items / self.perpage)
local page = NumInputBox:input(G_height-100, 100, "Page:", "current page "..self.page.." of "..n, true)
if pcall(function () page = math.floor(page) end) -- convert string to number
and page ~= self.page and page > 0 and page <= n then
self.page = page
if self.current + (page-1)*self.perpage > self.items then
self.current = self.items - (page-1)*self.perpage
end
end
self.pagedirty = true
end
)
self.commands:add(KEY_FW_RIGHT, nil, "joypad right",
_("document details"),
function(self)
local file_entry = self.result[self.perpage*(self.page-1)+self.current]
if file_entry.name == ".." then
warningUnsupportedFunction()
return
end -- do not show details
FileInfo:show(file_entry.dir,file_entry.name)
self.pagedirty = true
end
)
self.commands:add(KEY_S, nil, "S",
_("invoke search inputbox"),
function(self)
-- NuPogodi, 30.09.12: be sure that something is found
local old_keywords = self.keywords
local old_data = self.result
local old_page, old_current = self.page, self.current
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
if #self.result < 1 then
InfoMessage:inform("No search hits ", DINFO_DELAY, 1, MSG_WARN)
-- restoring the original data
self.result = old_data
self.items = #self.result
self.keywords = old_keywords
self.page = old_page
self.current = old_current
end
self.pagedirty = true
end
)
self.commands:add({KEY_F, KEY_AA}, nil, "F, Aa",
_("change font faces"),
function(self)
Font:chooseFonts()
self.pagedirty = true
end
)
self.commands:add({KEY_ENTER, KEY_FW_PRESS}, nil, "Enter",
_("open selected document"),
function(self)
local file_entry = self.result[self.perpage*(self.page-1)+self.current]
file_full_path = file_entry.dir .. "/" .. file_entry.name
if FileExists(file_full_path) then
openFile(file_full_path)
--[[
-- reset height and item index if screen has been rotated
-- not needed because we force portrait mode on document close
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:init()
self:setSearchResult(self.keywords)
self.pagedirty = true
else
InfoMessage:inform("File does not exist ", DINFO_DELAY, 1, MSG_ERROR)
end
end
)
self.commands:add(KEY_DEL, nil, "Del",
_("delete history entry"),
function(self)
local file_entry = self.result[self.perpage*(self.page-1)+self.current]
local file_to_del = file_entry.dir .. "/" .. file_entry.name
if InfoMessage.InfoMethod[MSG_CONFIRM] == 0 then -- silent regime
os.remove(DocToHistory(file_to_del))
self:init()
self:setSearchResult(self.keywords)
else
InfoMessage:inform("Press 'Y' to confirm ", DINFO_NODELAY, 0, MSG_CONFIRM)
if ReturnKey() == KEY_Y then
os.remove(DocToHistory(file_to_del))
self:init()
self:setSearchResult(self.keywords)
end
end
self.pagedirty = true
if self.items == 0 then
return "break"
end
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 FileHistory:choose(keywords)
self.perpage = math.floor(G_height / self.spacing) - 2
self.pagedirty = true
self.markerdirty = false
-- NuPogodi, 30.09.12: immediate quit (no redraw), if empty
if self:setSearchResult(keywords) < 1 then
InfoMessage:inform(_("No reading history "), DINFO_DELAY, 1, MSG_WARN)
return nil
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 header
local header = string.format(_("Last Documents (%d items)"), self.items)
if self.keywords ~= "" and self.keywords ~= " " then
--header = header .. " (filter: \'" .. string.upper(self.keywords) .. "\')"
header = "Search Results for \'"..string.upper(self.keywords).."\'"
end
DrawTitle(header,self.margin_H,0,self.title_H,3,tface)
-- draw found results
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
-- 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)
Screen:refresh(1, nil, 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
Screen:refresh(1, nil, self.margin_H, y, G_width - 2 * self.margin_H, 3)
end
self.oldcurrent = self.current
self.markerdirty = false
end
if self.pagedirty then
Screen: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