mirror of https://github.com/kepler155c/opus
73 lines
1.6 KiB
Lua
73 lines
1.6 KiB
Lua
local class = require('opus.class')
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local UI = require('opus.ui')
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--[[-- Menu --]]--
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UI.Menu = class(UI.Grid)
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UI.Menu.defaults = {
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UIElement = 'Menu',
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disableHeader = true,
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columns = { { heading = 'Prompt', key = 'prompt', width = 20 } },
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menuItems = { },
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}
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function UI.Menu:postInit()
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self.values = self.menuItems
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self.pageSize = #self.menuItems
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end
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function UI.Menu:setParent()
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UI.Grid.setParent(self)
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self.itemWidth = 1
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for _,v in pairs(self.values) do
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if #v.prompt > self.itemWidth then
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self.itemWidth = #v.prompt
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end
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end
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self.columns[1].width = self.itemWidth
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if self.centered then
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self:center()
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else
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self.width = self.itemWidth + 2
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end
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end
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function UI.Menu:center()
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self.x = (self.width - self.itemWidth + 2) / 2
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self.width = self.itemWidth + 2
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end
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function UI.Menu:eventHandler(event)
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if event.type == 'key' then
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if event.key == 'enter' then
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local selected = self.menuItems[self.index]
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self:emit({
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type = selected.event or 'menu_select',
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selected = selected
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})
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return true
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end
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elseif event.type == 'mouse_click' then
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if event.y <= #self.menuItems then
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UI.Grid.setIndex(self, event.y)
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local selected = self.menuItems[self.index]
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self:emit({
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type = selected.event or 'menu_select',
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selected = selected
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})
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return true
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end
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end
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return UI.Grid.eventHandler(self, event)
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end
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function UI.Menu.example()
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return UI.Menu {
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x = 2, y = 2, height = 3,
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menuItems = {
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{ prompt = 'Start', event = 'start' },
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{ prompt = 'Continue', event = 'continue' },
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{ prompt = 'Quit', event = 'quit' }
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}
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}
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end
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