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131 lines
3.2 KiB
131 lines
3.2 KiB
Console = createEnvironment()
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setfenv(1, Console)
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-- public variables
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LogColors = { [LogInfo] = 'white',
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[LogWarning] = 'yellow',
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[LogError] = 'red' }
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MaxLogLines = 80
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-- private variables
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local consoleWidget
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local logLocked = false
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local commandEnv = createEnvironment()
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local commandLineEdit
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local commandHistory = { }
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local currentHistoryIndex = 0
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-- private functions
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local function navigateCommand(step)
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local numCommands = #commandHistory
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if numCommands > 0 then
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currentHistoryIndex = math.min(math.max(currentHistoryIndex + step, 0), numCommands)
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if currentHistoryIndex > 0 then
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local command = commandHistory[numCommands - currentHistoryIndex + 1]
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commandLineEdit:setText(command)
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else
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commandLineEdit:clearText()
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end
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end
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end
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local function onKeyPress(widget, keyCode, keyChar, keyboardModifiers)
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if keyboardModifiers == KeyboardNoModifier then
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-- execute current command
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if keyCode == KeyReturn or keyCode == keyEnter then
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local currentCommand = commandLineEdit:getText()
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executeCommand(currentCommand)
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commandLineEdit:clearText()
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return true
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-- navigate history up
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elseif keyCode == KeyUp then
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navigateCommand(1)
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return true
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-- navigate history down
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elseif keyCode == KeyDown then
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navigateCommand(-1)
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return true
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end
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end
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return false
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end
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local function onLog(level, message, time)
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-- debug messages are ignored
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if level == LogDebug then return end
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-- avoid logging while reporting logs (would cause a infinite loop)
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if logLocked then return end
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logLocked = true
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addLine(message, LogColors[level])
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logLocked = false
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end
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-- public functions
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function init()
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consoleWidget = UI.loadAndDisplay("/console/console.otui")
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consoleWidget:hide()
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consoleWidget.onKeyPress = onKeyPress
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commandLineEdit = consoleWidget:getChildById('commandLineEdit')
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Logger.setOnLog(onLog)
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Logger.fireOldMessages()
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end
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function terminate()
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Logger.setOnLog(nil)
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consoleWidget:destroy()
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commandLineEdit = nil
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consoleWidget = nil
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end
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function addLine(text, color)
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-- create new line label
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local numLines = consoleWidget:getChildCount() - 2
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local label = UILabel.create()
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consoleWidget:insertChild(-2, label)
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label:setId('consoleLabel' .. numLines)
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label:setStyle('ConsoleLabel')
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label:setText(text)
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label:setForegroundColor(color)
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-- delete old lines if needed
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if numLines > MaxLogLines then
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consoleWidget:getChildByIndex(1):destroy()
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end
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end
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function executeCommand(command)
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-- reset current history index
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currentHistoryIndex = 0
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-- add new command to history
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table.insert(commandHistory, command)
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-- add command line
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addLine(">> " .. command, "#ffffff")
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-- load command buffer
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local func, err = loadstring(command, "@")
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-- check for syntax errors
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if not func then
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Logger.log(LogError, 'incorrect lua syntax: ' .. err:sub(5))
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return
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end
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-- setup func env to commandEnv
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setfenv(func, commandEnv)
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-- execute the command
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local ok, ret = pcall(func)
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if ok then
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-- if the command returned a value, print it
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if ret then print(ret) end
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else
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Logger.log(LogError, 'command failed: ' .. ret)
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end
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end
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