local Object = require("Object")
local utils = require("utils")
local xmlValue = require("utils").getValueFromXML
return function(name)
local base = Object(name)
local objectType = "Dropdown"
base.width = 12
base.height = 1
base:setZIndex(6)
local list = {}
local itemSelectedBG
local itemSelectedFG
local selectionColorActive = true
local align = "left"
local yOffset = 0
local dropdownW = 16
local dropdownH = 6
local closedSymbol = "\16"
local openedSymbol = "\31"
local isOpened = false
local object = {
getType = function(self)
return objectType
end;
setValuesByXMLData = function(self, data)
base.setValuesByXMLData(self, data)
if(xmlValue("selectionBG", data)~=nil)then itemSelectedBG = colors[xmlValue("selectionBG", data)] end
if(xmlValue("selectionFG", data)~=nil)then itemSelectedFG = colors[xmlValue("selectionFG", data)] end
if(xmlValue("dropdownWidth", data)~=nil)then dropdownW = xmlValue("dropdownWidth", data) end
if(xmlValue("dropdownHeight", data)~=nil)then dropdownH = xmlValue("dropdownHeight", data) end
if(xmlValue("offset", data)~=nil)then yOffset = xmlValue("offset", data) end
if(data["item"]~=nil)then
local tab = data["item"]
if(tab.properties~=nil)then tab = {tab} end
for k,v in pairs(tab)do
self:addItem(xmlValue("text", v), colors[xmlValue("bg", v)], colors[xmlValue("fg", v)])
end
end
end,
setOffset = function(self, yOff)
yOffset = yOff
self:updateDraw()
return self
end;
getOffset = function(self)
return yOffset
end;
addItem = function(self, text, bgCol, fgCol, ...)
table.insert(list, { text = text, bgCol = bgCol or self.bgColor, fgCol = fgCol or self.fgColor, args = { ... } })
self:updateDraw()
return self
end;
getAll = function(self)
return list
end;
removeItem = function(self, index)
table.remove(list, index)
self:updateDraw()
return self
end;
getItem = function(self, index)
return list[index]
end;
getItemIndex = function(self)
local selected = self:getValue()
for key, value in pairs(list) do
if (value == selected) then
return key
end
end
end;
clear = function(self)
list = {}
self:setValue({})
self:updateDraw()
return self
end;
getItemCount = function(self)
return #list
end;
editItem = function(self, index, text, bgCol, fgCol, ...)
table.remove(list, index)
table.insert(list, index, { text = text, bgCol = bgCol or self.bgColor, fgCol = fgCol or self.fgColor, args = { ... } })
self:updateDraw()
return self
end;
selectItem = function(self, index)
self:setValue(list[index] or {})
self:updateDraw()
return self
end;
setSelectedItem = function(self, bgCol, fgCol, active)
itemSelectedBG = bgCol or self.bgColor
itemSelectedFG = fgCol or self.fgColor
selectionColorActive = active
self:updateDraw()
return self
end;
setDropdownSize = function(self, width, height)
dropdownW, dropdownH = width, height
self:updateDraw()
return self
end,
mouseHandler = function(self, button, x, y)
if (isOpened) then
local obx, oby = self:getAbsolutePosition(self:getAnchorPosition())
if(button==1)then
if (#list > 0) then
for n = 1, dropdownH do
if (list[n + yOffset] ~= nil) then
if (obx <= x) and (obx + dropdownW > x) and (oby + n == y) then
self:setValue(list[n + yOffset])
self:updateDraw()
local val = self:getEventSystem():sendEvent("mouse_click", self, "mouse_click", dir, x, y)
if(val==false)then return val end
return true
end
end
end
end
end
end
if (base.mouseHandler(self, button, x, y)) then
isOpened = (not isOpened)
self:updateDraw()
return true
else
if(isOpened)then
self:updateDraw()
isOpened = false
end
return false
end
end,
mouseUpHandler = function(self, button, x, y)
if (isOpened) then
local obx, oby = self:getAbsolutePosition(self:getAnchorPosition())
if(button==1)then
if (#list > 0) then
for n = 1, dropdownH do
if (list[n + yOffset] ~= nil) then
if (obx <= x) and (obx + dropdownW > x) and (oby + n == y) then
isOpened = false
self:updateDraw()
local val = self:getEventSystem():sendEvent("mouse_up", self, "mouse_up", dir, x, y)
if(val==false)then return val end
return true
end
end
end
end
end
end
end,
scrollHandler = function(self, dir, x, y)
if (isOpened)and(self:isFocused()) then
yOffset = yOffset + dir
if (yOffset < 0) then
yOffset = 0
end
if (dir == 1) then
if (#list > dropdownH) then
if (yOffset > #list - dropdownH) then
yOffset = #list - dropdownH
end
else
yOffset = math.min(#list - 1, 0)
end
end
local val = self:getEventSystem():sendEvent("mouse_scroll", self, "mouse_scroll", dir, x, y)
if(val==false)then return val end
self:updateDraw()
return true
end
end,
draw = function(self)
if (base.draw(self)) then
local obx, oby = self:getAnchorPosition()
local w,h = self:getSize()
if (self.parent ~= nil) then
if(self.bgColor~=false)then self.parent:drawBackgroundBox(obx, oby, w, h, self.bgColor) end
local val = self:getValue()
local text = utils.getTextHorizontalAlign((val~=nil and val.text or ""), w, align):sub(1, w - 1) .. (isOpened and openedSymbol or closedSymbol)
self.parent:writeText(obx, oby, text, self.bgColor, self.fgColor)
if (isOpened) then
for n = 1, dropdownH do
if (list[n + yOffset] ~= nil) then
if (list[n + yOffset] == val) then
if (selectionColorActive) then
self.parent:writeText(obx, oby + n, utils.getTextHorizontalAlign(list[n + yOffset].text, dropdownW, align), itemSelectedBG, itemSelectedFG)
else
self.parent:writeText(obx, oby + n, utils.getTextHorizontalAlign(list[n + yOffset].text, dropdownW, align), list[n + yOffset].bgCol, list[n + yOffset].fgCol)
end
else
self.parent:writeText(obx, oby + n, utils.getTextHorizontalAlign(list[n + yOffset].text, dropdownW, align), list[n + yOffset].bgCol, list[n + yOffset].fgCol)
end
end
end
end
end
end
end,
init = function(self)
self.bgColor = self.parent:getTheme("DropdownBG")
self.fgColor = self.parent:getTheme("DropdownText")
itemSelectedBG = self.parent:getTheme("SelectionBG")
itemSelectedFG = self.parent:getTheme("SelectionText")
if(self.parent~=nil)then
self.parent:addEvent("mouse_click", self)
self.parent:addEvent("mouse_up", self)
self.parent:addEvent("mouse_scroll", self)
end
end,
}
return setmetatable(object, base)
end
Sammy