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opus/sys/apps/Help.lua
2017-09-05 02:09:31 -04:00

89 lines
1.8 KiB
Lua

requireInjector(getfenv(1))
local Event = require('event')
local UI = require('ui')
multishell.setTitle(multishell.getCurrent(), 'Help')
UI:configure('Help', ...)
local files = { }
for _,f in pairs(fs.list('/rom/help')) do
table.insert(files, { name = f })
end
local page = UI.Page({
labelText = UI.Text({
y = 2,
x = 3,
value = 'Search',
}),
filter = UI.TextEntry({
y = 2,
x = 10,
width = UI.term.width - 13,
limit = 32,
}),
grid = UI.ScrollingGrid({
y = 4,
height = UI.term.height - 4,
values = files,
columns = {
{ heading = 'Name', key = 'name', width = 12 },
},
sortColumn = 'name',
}),
statusBar = UI.StatusBar(),
accelerators = {
q = 'quit',
},
})
local function showHelp(name)
UI.term:reset()
shell.run('help ' .. name)
print('Press enter to return')
repeat
local _, k = os.pullEvent('key_up')
until k == keys.enter
end
function page:eventHandler(event)
if event.type == 'quit' then
Event.exitPullEvents()
elseif event.type == 'key' and event.key == 'enter' then
if self.grid:getSelected() then
showHelp(self.grid:getSelected().name)
self:setFocus(self.filter)
self:draw()
end
elseif event.type == 'grid_select' then
showHelp(event.selected.name)
self:setFocus(self.filter)
self:draw()
elseif event.type == 'text_change' then
local text = event.text
if #text == 0 then
self.grid.values = files
else
self.grid.values = { }
for _,f in pairs(files) do
if string.find(f.name, text) then
table.insert(self.grid.values, f)
end
end
end
self.grid:update()
self.grid:setIndex(1)
self.grid:draw()
else
UI.Page.eventHandler(self, event)
end
end
UI:setPage(page)
UI:pullEvents()