mirror of
https://github.com/kepler155c/opus
synced 2024-11-15 13:14:49 +00:00
89 lines
2.3 KiB
Lua
89 lines
2.3 KiB
Lua
local class = require('class')
|
|
local UI = require('ui')
|
|
local Util = require('util')
|
|
|
|
local colors = _G.colors
|
|
|
|
UI.Chooser = class(UI.Window)
|
|
UI.Chooser.defaults = {
|
|
UIElement = 'Chooser',
|
|
choices = { },
|
|
nochoice = 'Select',
|
|
backgroundFocusColor = colors.lightGray,
|
|
textInactiveColor = colors.gray,
|
|
leftIndicator = '<',
|
|
rightIndicator = '>',
|
|
height = 1,
|
|
}
|
|
function UI.Chooser:setParent()
|
|
if not self.width and not self.ex then
|
|
self.width = 1
|
|
for _,v in pairs(self.choices) do
|
|
if #v.name > self.width then
|
|
self.width = #v.name
|
|
end
|
|
end
|
|
self.width = self.width + 4
|
|
end
|
|
UI.Window.setParent(self)
|
|
end
|
|
|
|
function UI.Chooser:draw()
|
|
local bg = self.backgroundColor
|
|
if self.focused then
|
|
bg = self.backgroundFocusColor
|
|
end
|
|
local fg = self.inactive and self.textInactiveColor or self.textColor
|
|
local choice = Util.find(self.choices, 'value', self.value)
|
|
local value = self.nochoice
|
|
if choice then
|
|
value = choice.name
|
|
end
|
|
self:write(1, 1, self.leftIndicator, self.backgroundColor, colors.black)
|
|
self:write(2, 1, ' ' .. Util.widthify(tostring(value), self.width-4) .. ' ', bg, fg)
|
|
self:write(self.width, 1, self.rightIndicator, self.backgroundColor, colors.black)
|
|
end
|
|
|
|
function UI.Chooser:focus()
|
|
self:draw()
|
|
end
|
|
|
|
function UI.Chooser:eventHandler(event)
|
|
if event.type == 'key' then
|
|
if event.key == 'right' or event.key == 'space' then
|
|
local _,k = Util.find(self.choices, 'value', self.value)
|
|
local choice
|
|
if not k then k = 1 end
|
|
if k and k < #self.choices then
|
|
choice = self.choices[k+1]
|
|
else
|
|
choice = self.choices[1]
|
|
end
|
|
self.value = choice.value
|
|
self:emit({ type = 'choice_change', value = self.value, element = self, choice = choice })
|
|
self:draw()
|
|
return true
|
|
elseif event.key == 'left' then
|
|
local _,k = Util.find(self.choices, 'value', self.value)
|
|
local choice
|
|
if k and k > 1 then
|
|
choice = self.choices[k-1]
|
|
else
|
|
choice = self.choices[#self.choices]
|
|
end
|
|
self.value = choice.value
|
|
self:emit({ type = 'choice_change', value = self.value, element = self, choice = choice })
|
|
self:draw()
|
|
return true
|
|
end
|
|
elseif event.type == 'mouse_click' or event.type == 'mouse_doubleclick' then
|
|
if event.x == 1 then
|
|
self:emit({ type = 'key', key = 'left' })
|
|
return true
|
|
elseif event.x == self.width then
|
|
self:emit({ type = 'key', key = 'right' })
|
|
return true
|
|
end
|
|
end
|
|
end
|