added statelessVirtualTermWriter

- changed how WindowManager handles new contexts

src/bin/KernelLog.hx

@@ -0,0 +1,65 @@
+package bin;
+
+import lib.Color;
+import lib.MathI;
+import kernel.log.Log;
+import kernel.ui.WindowContext;
+import lib.ui.UIApp;
+
+using tink.CoreApi;
+
+class KernelLog extends UIApp{
+	private var ctx:WindowContext;
+	private var exitTrigger: Bool -> Void;
+
+	public function new() {}
+
+	public function invoke(context:WindowContext):Future<Bool> {
+		this.ctx = context;
+
+		Log.instance.onLog.handle(()->{
+			render();
+		});
+
+		render();
+
+		return new Future<Bool>(cb -> {
+			this.exitTrigger = cb;
+			return null;
+		});
+	}
+
+	private function render() {
+		ctx.clear();
+		ctx.setCursorPos(0,0);
+
+		var lines = Log.instance.getLines();
+		var height = ctx.getSize().y;
+		var start = MathI.max(lines.length - height,0);
+
+		for (i in start...lines.length) {
+			var line = lines[i];
+
+			switch (line.level){
+				case Info:
+					ctx.setTextColor(Color.White);
+					ctx.write("[INFO] ");
+				case Warn:
+					ctx.setTextColor(Color.Yellow);
+					ctx.write("[WARN] ");
+				case Error:
+					ctx.setTextColor(Color.Red);
+					ctx.write("[ERRO] ");
+				case Debug:
+					ctx.setTextColor(Color.Gray);
+					ctx.write("[DEBG] ");
+				case Silly:
+					ctx.setTextColor(Color.Gray);
+					ctx.write("[SILL] ");
+			}
+
+			ctx.write(line.message);
+			ctx.setCursorPos(0,ctx.getCursorPos().y + 1);
+		}
+	}
+}

src/kernel/Init.hx

@@ -1,5 +1,6 @@
 package kernel;
 
+import kernel.log.Log;
 import kernel.turtle.Turtle;
 import haxe.MainLoop;
 import kernel.net.Routing;
@@ -12,6 +13,7 @@ import kernel.net.Net;
 class Init {
 	public static function initKernel() {
 		// Init singeltons here because haxe is confused about the order to create them.
+		Log.instance = new Log();
 		KernelEvents.instance = new KernelEvents();
 		Peripheral.instance = new Peripheral();
 

src/kernel/KernelEvents.hx

@@ -45,7 +45,6 @@ class KernelEvents {
 	public final onPaste:Signal<String>;
 	public final onPeripheral:Signal<String>;
 	public final onPeripheralDetach:Signal<String>;
-	public final onRednetMessage:Signal<{sender:Int, message:Any, protocol:Any}>;
 	public final onRedstone:Signal<Noise>;
 	public final onSpeakerAudioEmpty:Signal<String>;
 	public final onTaskComplete:Signal<{id:Int, success:Bool, failedReason:String}>;
@@ -117,7 +116,6 @@ class KernelEvents {
 		this.onPaste = onPasteTrigger.asSignal();
 		this.onPeripheral = onPeripheralTrigger.asSignal();
 		this.onPeripheralDetach = onPeripheralDetachTrigger.asSignal();
-		this.onRednetMessage = onRednetMessageTrigger.asSignal();
 		this.onRedstone = onRedstoneTrigger.asSignal();
 		this.onSpeakerAudioEmpty = onSpeakerAudioEmptyTrigger.asSignal();
 		this.onTaskComplete = onTaskCompleteTrigger.asSignal();
@@ -194,8 +192,6 @@ class KernelEvents {
 				this.onPeripheralTrigger.trigger(event[2]);
 			case "peripheral_detach":
 				this.onPeripheralDetachTrigger.trigger(event[2]);
-			case "rednet_message":
-				this.onRednetMessageTrigger.trigger({sender: event[2], message: event[3], protocol: event[4]});
 			case "redstone":
 				this.onRedstoneTrigger.trigger(null);
 			case "speaker_audio_empty":
@@ -235,4 +231,38 @@ class KernelEvents {
 				throw new Exception("Invalid input");
 		}
 	}
+
+	@:allow(lib.Debug)
+	private function printListenerCount() {
+		if (onAlarmTrigger.getLength() > 0) Log.debug("onAlarm: " + onAlarmTrigger.getLength());
+		if (onCharTrigger.getLength() > 0) Log.debug("onChar: " + onCharTrigger.getLength());
+		if (onDiskTrigger.getLength() > 0) Log.debug("onDisk: " + onDiskTrigger.getLength());
+		if (onDiskEjectTrigger.getLength() > 0) Log.debug("onDiskEject: " + onDiskEjectTrigger.getLength());
+		if (onHttpCheckTrigger.getLength() > 0) Log.debug("onHttpCheck: " + onHttpCheckTrigger.getLength());
+		if (onHttpFailureTrigger.getLength() > 0) Log.debug("onHttpFailure: " + onHttpFailureTrigger.getLength());
+		if (onHttpSuccessTrigger.getLength() > 0) Log.debug("onHttpSuccess: " + onHttpSuccessTrigger.getLength());
+		if (onKeyTrigger.getLength() > 0) Log.debug("onKey: " + onKeyTrigger.getLength());
+		if (onKeyUpTrigger.getLength() > 0) Log.debug("onKeyUp: " + onKeyUpTrigger.getLength());
+		if (onModemMessageTrigger.getLength() > 0) Log.debug("onModemMessage: " + onModemMessageTrigger.getLength());
+		if (onMonitorResizeTrigger.getLength() > 0) Log.debug("onMonitorResize: " + onMonitorResizeTrigger.getLength());
+		if (onMonitorTouchTrigger.getLength() > 0) Log.debug("onMonitorTouch: " + onMonitorTouchTrigger.getLength());
+		if (onMouseClickTrigger.getLength() > 0) Log.debug("onMouseClick: " + onMouseClickTrigger.getLength());
+		if (onMouseDragTrigger.getLength() > 0) Log.debug("onMouseDrag: " + onMouseDragTrigger.getLength());
+		if (onMouseScrollTrigger.getLength() > 0) Log.debug("onMouseScroll: " + onMouseScrollTrigger.getLength());
+		if (onMouseUpTrigger.getLength() > 0) Log.debug("onMouseUp: " + onMouseUpTrigger.getLength());
+		if (onPasteTrigger.getLength() > 0) Log.debug("onPaste: " + onPasteTrigger.getLength());
+		if (onPeripheralTrigger.getLength() > 0) Log.debug("onPeripheral: " + onPeripheralTrigger.getLength());
+		if (onPeripheralDetachTrigger.getLength() > 0) Log.debug("onPeripheralDetach: " + onPeripheralDetachTrigger.getLength());
+		if (onRedstoneTrigger.getLength() > 0) Log.debug("onRedstone: " + onRedstoneTrigger.getLength());
+		if (onSpeakerAudioEmptyTrigger.getLength() > 0) Log.debug("onSpeakerAudioEmpty: " + onSpeakerAudioEmptyTrigger.getLength());
+		if (onTaskCompleteTrigger.getLength() > 0) Log.debug("onTaskComplete: " + onTaskCompleteTrigger.getLength());
+		if (onTermResizeTrigger.getLength() > 0) Log.debug("onTermResize: " + onTermResizeTrigger.getLength());
+		if (onTerminateTrigger.getLength() > 0) Log.debug("onTerminate: " + onTerminateTrigger.getLength());
+		if (onTimerTrigger.getLength() > 0) Log.debug("onTimer: " + onTimerTrigger.getLength());
+		if (onTurtleInventoryTrigger.getLength() > 0) Log.debug("onTurtleInventory: " + onTurtleInventoryTrigger.getLength());
+		if (onWebsocketCloseTrigger.getLength() > 0) Log.debug("onWebsocketClose: " + onWebsocketCloseTrigger.getLength());
+		if (onWebsocketFailureTrigger.getLength() > 0) Log.debug("onWebsocketFailure: " + onWebsocketFailureTrigger.getLength());
+		if (onWebsocketMessageTrigger.getLength() > 0) Log.debug("onWebsocketMessage: " + onWebsocketMessageTrigger.getLength());
+		if (onWebsocketSuccessTrigger.getLength() > 0) Log.debug("onWebsocketSuccess: " + onWebsocketSuccessTrigger.getLength());
+	}
 }

src/kernel/log/Log.hx

@@ -1,40 +1,52 @@
 package kernel.log;
 
+import haxe.ds.ReadOnlyArray;
 #if webconsole
 import lib.Debug;
 #end
 
+using tink.CoreApi;
+
 /**
 	Log messages to specified output.
 **/
 class Log {
+	public static var instance:Log;
+
 	private static inline final MAX_LINES:Int = 100;
 
-	private static final logLines:Array<LogLine> = [];
+	public final onLog:Signal<LogLine>;
+
+	private final onLogTrigger:SignalTrigger<LogLine> = new SignalTrigger();
+	private final logLines:Array<LogLine> = [];
+
+	public function new() {
+		onLog = onLogTrigger.asSignal();
+	}
 
 	public static function info(msg:Dynamic, ?pos:haxe.PosInfos) {
-		log({level: Info, message: Std.string(msg),time: 0});
+		instance.log({level: Info, message: Std.string(msg),time: 0});
 	}
 
 	public static function warn(msg:Dynamic, ?pos:haxe.PosInfos) {
-		log({level: Warn, message: Std.string(msg),time: 0});
+		instance.log({level: Warn, message: Std.string(msg),time: 0});
 	}
 
 	public static function error(msg:Dynamic, ?pos:haxe.PosInfos) {
-		log({level: Error, message: Std.string(msg),time: 0});
+		instance.log({level: Error, message: Std.string(msg),time: 0});
 	}
 
 	public static function debug(msg:Dynamic, ?pos:haxe.PosInfos) {
 		#if debug
-		log({level: Debug, message: Std.string(msg),time: 0});
+		instance.log({level: Debug, message: Std.string(msg),time: 0});
 		#end
 	}
 
 	public static function silly(msg:Dynamic, ?pos:haxe.PosInfos) {
-		log({level: Silly, message: Std.string(msg),time: 0});
+		instance.log({level: Silly, message: Std.string(msg),time: 0});
 	}
 
-	private static function log(line: LogLine, ?pos:haxe.PosInfos) {
+	private function log(line: LogLine, ?pos:haxe.PosInfos) {
 		logLines.push(line);
 
 		if (logLines.length > MAX_LINES) {
@@ -44,5 +56,11 @@ class Log {
 		#if webconsole
 		Debug.printWeb('[${Std.string(line.level)}] ${line.message}');
 		#end
+
+		onLogTrigger.trigger(line);
+	}
+
+	public function getLines():ReadOnlyArray<LogLine> {
+		return logLines;
 	}
 }

src/kernel/ui/BufferedVirtualTermWriter.hx

@@ -0,0 +1,180 @@
+package kernel.ui;
+
+import lib.Pos;
+import lib.Vec.Vec2;
+import lib.Color;
+import kernel.ui.TermWriteable;
+
+using tink.CoreApi;
+
+/**
+	A term writer that can switch beetween its internal buffer and another termwriter.
+	The other target is most of the time a real screen
+**/
+class BufferedVirtualTermWriter implements VirtualTermWriter extends TermBuffer {
+	private static final defaultSize:Vec2<Int> = {x: 50, y: 50};
+
+	private var target:TermWriteable;
+	private var enabled:Bool = false;
+	private var onResizeLink:CallbackLink;
+
+	@:allow(kernel.ui)
+	private function new(?target:TermWriteable) {
+		setTarget(target);
+
+		if (enabled) {
+			enable();
+		}
+
+		super();
+	}
+
+	public function enable() {
+		if (target != null) {
+			enabled = true;
+			super.copyBufferToTarget(target);
+		}
+	}
+
+	public function disable() {
+		enabled = false;
+	}
+
+	public inline function isEnabled():Bool {
+		return enabled;
+	}
+
+	public function setTarget(newTarget:TermWriteable) {
+		if (newTarget != null) {
+			super.setSize(newTarget.getSize());
+
+			// Remove old target event listner
+			if (onResizeLink != null) {
+				onResizeLink.cancel();
+			}
+
+			// Add new target event listner
+			onResizeLink = newTarget.onResize.handle(newSize -> {
+				setSuperSize(newSize);
+			});
+
+			newTarget.reset();
+
+			target = newTarget;
+		}
+	}
+
+	private function setSuperSize(size:Vec2<Int>) {
+		super.setSize(target.getSize());
+	}
+
+	//
+	// TermWriteable functions.
+	//
+	public override function write(text:String) {
+		if (isEnabled()) {
+			target.write(text);
+		}
+
+		super.write(text);
+	}
+
+	public override function scroll(y:Int) {
+		if (isEnabled()) {
+			target.scroll(y);
+		}
+		super.scroll(y);
+	}
+
+	public override function getCursorPos():Pos {
+		if (isEnabled()) {
+			return target.getCursorPos();
+		} else {
+			return super.getCursorPos();
+		}
+	}
+
+	public override function setCursorPos(x:Int, y:Int) {
+		if (isEnabled()) {
+			target.setCursorPos(x, y);
+		}
+
+		super.setCursorPos(x, y);
+	}
+
+	public override function getCursorBlink():Bool {
+		if (isEnabled()){
+			return target.getCursorBlink();
+		}else{
+			return super.getCursorBlink();
+		}
+	}
+
+	public override function setCursorBlink(blink:Bool) {
+		if (isEnabled()){
+			target.setCursorBlink(blink);
+		}
+		super.setCursorBlink(blink);
+	}
+
+	public override function getSize():Vec2<Int> {
+		// TODO: make sense ?
+		if (target != null) {
+			return target.getSize();
+		}
+
+		return defaultSize;
+	}
+
+	public override function clear() {
+		if (isEnabled()) {
+			target.clear();
+		}
+
+		super.clear();
+	}
+
+	public override function clearLine() {
+		if (isEnabled()) {
+			target.clearLine();
+		}
+
+		super.clearLine();
+	}
+
+	public override function getTextColor():Color {
+		if (isEnabled()) {
+			return target.getTextColor();
+		}
+
+		return super.getTextColor();
+	}
+
+	public override function setTextColor(color:Color) {
+		if (isEnabled()) {
+			target.setTextColor(color);
+		}
+
+		super.setTextColor(color);
+	}
+
+	public override function getBackgroundColor():Color {
+		if (isEnabled()) {
+			return target.getBackgroundColor();
+		}
+
+		return super.getBackgroundColor();
+	}
+
+	public override function setBackgroundColor(color:Color) {
+		if (isEnabled()) {
+			target.setBackgroundColor(color);
+		}
+
+		super.setBackgroundColor(color);
+	}
+
+	public override function isColor():Bool {
+		throw new haxe.exceptions.NotImplementedException();
+	}
+}

src/kernel/ui/StatelessVirtualTermWriter.hx

@@ -0,0 +1,159 @@
+package kernel.ui;
+
+import kernel.log.Log;
+import lib.Pos;
+import lib.Vec.Vec2;
+import lib.Color;
+
+using tink.CoreApi;
+
+/**
+	Normal TermWriteable but without storing the the state in a buffer wehen disabled.
+	When enabled or the screen size changes the render function is called.
+	The render function is only called when needed.
+	You can also request a re-render by calling `requestRender`.
+**/
+class StatelessVirtualTermWriter implements VirtualTermWriter {
+	public var onResize(default, null):Signal<Vec2<Int>>;
+
+	private var onResizeTrigger: SignalTrigger<Vec2<Int>> = Signal.trigger();
+	private var target:TermWriteable;
+	private var enabled:Bool = false;
+	private var renderFunc:Null<Void->Void> = null;
+	private var renderRequested:Bool = false;
+	private var onResizeLink: CallbackLink;
+
+	@:allow(kernel.ui)
+	private function new(?target:TermWriteable) {
+		onResize = onResizeTrigger.asSignal();
+		setTarget(target);
+	}
+
+	public function setRenderFunc(func: (Void->Void)) {
+		this.renderFunc = func;
+	}
+
+	public function requestRender() {
+		if (renderFunc == null) {
+			Log.warn("Render requested, but no render function set");
+			return;
+		}
+
+		if (enabled) {
+			renderFunc();
+			renderRequested = false;
+		}else{
+			renderRequested = true;
+		}
+	}
+
+	//
+	// VirtualTermWriter implementation
+	//
+
+	public function enable() {
+		if (target == null) {
+			return;
+		}
+
+		enabled = true;
+
+		if (renderFunc != null){
+			renderFunc();
+		}
+
+		renderRequested = false;
+	}
+
+	public function disable() {
+		enabled = false;
+	}
+
+	public function setTarget(newTarget:TermWriteable) {
+		if (newTarget == null) {
+			return;
+		}
+
+		if (target != null) {
+			onResizeLink.cancel();
+		}
+
+		onResizeLink = newTarget.onResize.handle((size) -> {
+			requestRender();
+			onResizeTrigger.trigger(size);
+		});
+
+		target = newTarget;
+	}
+
+	public function isEnabled():Bool {
+		return enabled;
+	}
+
+	//
+	// TermWriteable implementation
+	//
+	// Some functions return defualt values if the target is not set. This should not be an issue since
+	// the render func is only called when the target is set.
+	//
+
+	public inline function write(text:String) {
+		if (enabled) target.write(text);
+	}
+
+	public inline function scroll(y:Int) {
+		if (enabled) target.scroll(y);
+	}
+
+	public inline function getCursorPos():Pos {
+		return enabled ? target.getCursorPos() : new Pos({x: 0, y: 0});
+	}
+
+	public inline function setCursorPos(x:Int, y:Int) {
+		if (enabled) target.setCursorPos(x, y);
+	}
+
+	public inline function getCursorBlink():Bool {
+		return enabled ? target.getCursorBlink() : false;
+	}
+
+	public inline function setCursorBlink(blink:Bool) {
+		if (enabled) target.setCursorBlink(blink);
+	}
+
+	public inline function getSize():Vec2<Int> {
+		return enabled ? target.getSize() : {x: 0, y: 0};
+	}
+
+	public inline function clear() {
+		if (enabled) target.clear();
+	}
+
+	public inline function clearLine() {
+		if (enabled) target.clearLine();
+	}
+
+	public inline function getTextColor():Color {
+		return enabled ? target.getTextColor() : Color.White;
+	}
+
+	public inline function setTextColor(color:Color) {
+		if (enabled) target.setTextColor(color);
+	}
+
+	public inline function getBackgroundColor():Color {
+		return enabled ? target.getBackgroundColor() : Color.Black;
+	}
+
+	public inline function setBackgroundColor(color:Color) {
+		if (enabled) target.setBackgroundColor(color);
+	}
+
+	public inline function isColor():Bool {
+		return enabled ? target.isColor() : false;
+	}
+
+	public inline function reset() {
+		if (enabled) target.reset();
+	}
+}

src/kernel/ui/VirtualTermWriter.hx

@@ -1,180 +1,12 @@
 package kernel.ui;
 
-import lib.Pos;
-import lib.Vec.Vec2;
-import lib.Color;
-import kernel.ui.TermWriteable;
-
-using tink.CoreApi;
-
 /**
-	A term writer that can switch beetween its internal buffer and another termwriter.
-	The other target is most of the time a real screen
+	A VirtualTermWriter is a TermWriteable that can be enabled or disabled.
+	When disabled, it will not write to its target. When enabled, it will.
 **/
-class VirtualTermWriter implements TermWriteable extends TermBuffer {
-	private static final defaultSize:Vec2<Int> = {x: 50, y: 50};
-
-	private var target:TermWriteable;
-	private var enabled:Bool = false;
-	private var onResizeLink:CallbackLink;
-
-	@:allow(kernel.ui)
-	private function new(?target:TermWriteable) {
-		setTarget(target);
-
-		if (enabled) {
-			enable();
-		}
-
-		super();
-	}
-
-	public function enable() {
-		if (target != null) {
-			enabled = true;
-			super.copyBufferToTarget(target);
-		}
-	}
-
-	public function disable() {
-		enabled = false;
-	}
-
-	public inline function isEnabled():Bool {
-		return enabled;
-	}
-
-	public function setTarget(newTarget:TermWriteable) {
-		if (newTarget != null) {
-			super.setSize(newTarget.getSize());
-
-			// Remove old target event listner
-			if (onResizeLink != null) {
-				onResizeLink.cancel();
-			}
-
-			// Add new target event listner
-			onResizeLink = newTarget.onResize.handle(newSize -> {
-				setSuperSize(newSize);
-			});
-
-			newTarget.reset();
-
-			target = newTarget;
-		}
-	}
-
-	private function setSuperSize(size:Vec2<Int>) {
-		super.setSize(target.getSize());
-	}
-
-	//
-	// TermWriteable functions.
-	//
-	public override function write(text:String) {
-		if (isEnabled()) {
-			target.write(text);
-		}
-
-		super.write(text);
-	}
-
-	public override function scroll(y:Int) {
-		if (isEnabled()) {
-			target.scroll(y);
-		}
-		super.scroll(y);
-	}
-
-	public override function getCursorPos():Pos {
-		if (isEnabled()) {
-			return target.getCursorPos();
-		} else {
-			return super.getCursorPos();
-		}
-	}
-
-	public override function setCursorPos(x:Int, y:Int) {
-		if (isEnabled()) {
-			target.setCursorPos(x, y);
-		}
-
-		super.setCursorPos(x, y);
-	}
-
-	public override function getCursorBlink():Bool {
-		if (isEnabled()){
-			return target.getCursorBlink();
-		}else{
-			return super.getCursorBlink();
-		}
-	}
-
-	public override function setCursorBlink(blink:Bool) {
-		if (isEnabled()){
-			target.setCursorBlink(blink);
-		}
-		super.setCursorBlink(blink);
-	}
-
-	public override function getSize():Vec2<Int> {
-		// TODO: make sense ?
-		if (target != null) {
-			return target.getSize();
-		}
-
-		return defaultSize;
-	}
-
-	public override function clear() {
-		if (isEnabled()) {
-			target.clear();
-		}
-
-		super.clear();
-	}
-
-	public override function clearLine() {
-		if (isEnabled()) {
-			target.clearLine();
-		}
-
-		super.clearLine();
-	}
-
-	public override function getTextColor():Color {
-		if (isEnabled()) {
-			return target.getTextColor();
-		}
-
-		return super.getTextColor();
-	}
-
-	public override function setTextColor(color:Color) {
-		if (isEnabled()) {
-			target.setTextColor(color);
-		}
-
-		super.setTextColor(color);
-	}
-
-	public override function getBackgroundColor():Color {
-		if (isEnabled()) {
-			return target.getBackgroundColor();
-		}
-
-		return super.getBackgroundColor();
-	}
-
-	public override function setBackgroundColor(color:Color) {
-		if (isEnabled()) {
-			target.setBackgroundColor(color);
-		}
-
-		super.setBackgroundColor(color);
-	}
-
-	public override function isColor():Bool {
-		throw new haxe.exceptions.NotImplementedException();
-	}
+interface VirtualTermWriter extends TermWriteable {
+	public function enable():Void;
+	public function disable():Void;
+	public function isEnabled():Bool;
+	public function setTarget(newTarget:TermWriteable):Void;
 }

src/kernel/ui/WindowContext.hx

@@ -62,82 +62,82 @@ class WindowContext implements TermWriteable {
 	public var onResize(default, null):Signal<Vec2<Int>>;
 
 	@:allow(kernel.ui)
-	private function setTarget(target:TermWriteable) {
+	private inline function setTarget(target:TermWriteable) {
 		writer.setTarget(target);
 	}
 
 	@:allow(kernel.ui)
-	private function enable() {
+	private inline function enable() {
 		writer.enable();
 	}
 
 	@:allow(kernel.ui)
-	private function disable() {
+	private inline function disable() {
 		writer.disable();
 	}
 
 	@:allow(kernel.ui)
-	private function isEnabled() {
+	private inline function isEnabled() {
 		return writer.isEnabled();
 	}
 
-	public function write(text:String) {
+	public inline function write(text:String) {
 		writer.write(text);
 	}
 
-	public function scroll(y:Int) {
+	public inline function scroll(y:Int) {
 		writer.scroll(y);
 	}
 
-	public function getCursorPos():Pos {
+	public inline function getCursorPos():Pos {
 		return writer.getCursorPos();
 	}
 
-	public function setCursorPos(x:Int, y:Int) {
+	public inline function setCursorPos(x:Int, y:Int) {
 		writer.setCursorPos(x, y);
 	}
 
-	public function getCursorBlink():Bool {
+	public inline function getCursorBlink():Bool {
 		return writer.getCursorBlink();
 	}
 
-	public function setCursorBlink(blink:Bool) {
+	public inline function setCursorBlink(blink:Bool) {
 		writer.setCursorBlink(blink);
 	}
 
-	public function getSize():Vec2<Int> {
+	public inline function getSize():Vec2<Int> {
 		return writer.getSize();
 	}
 
-	public function clear() {
+	public inline function clear() {
 		writer.clear();
 	}
 
-	public function clearLine() {
+	public inline function clearLine() {
 		writer.clearLine();
 	}
 
-	public function getTextColor():Color {
+	public inline function getTextColor():Color {
 		return writer.getTextColor();
 	}
 
-	public function setTextColor(color:Color) {
+	public inline function setTextColor(color:Color) {
 		writer.setTextColor(color);
 	}
 
-	public function getBackgroundColor():Color {
+	public inline function getBackgroundColor():Color {
 		return writer.getBackgroundColor();
 	}
 
-	public function setBackgroundColor(color:Color) {
+	public inline function setBackgroundColor(color:Color) {
 		writer.setBackgroundColor(color);
 	}
 
-	public function isColor():Bool {
+	public inline function isColor():Bool {
 		return writer.isColor();
 	}
 
-	public function reset() {
+	public inline function reset() {
 		writer.reset();
 	}
 
@@ -145,7 +145,7 @@ class WindowContext implements TermWriteable {
 		Delegate events to an UIEventDelegate.
 		Set to null to stop delegating events.
 	**/
-	public function delegateEvents(delegate: Null<UIEventDelegate>){
+	public inline function delegateEvents(delegate: Null<UIEventDelegate>){
 		this.eventDelegate = delegate;
 	}
 }

src/kernel/ui/WindowManager.hx

@@ -111,12 +111,26 @@ class WindowManager {
 		});
 	}
 
+	/**
+		Same as createNewBufferedContext because it is the most simple context.
+	**/
 	public function createNewContext():WindowContext {
-		var newContext = new WindowContext(new VirtualTermWriter());
+		return createNewBufferedContext();
+	}
+
+	public function createNewBufferedContext():WindowContext {
+		var newContext = new WindowContext(new BufferedVirtualTermWriter());
 
 		return newContext;
 	}
 
+	public function createNewStatelessContext():{ctx:WindowContext, setRenderFunc:(() -> Void) -> Void, requestRender:Void->Void} {
+		var writer = new StatelessVirtualTermWriter();
+		var newContext = new WindowContext(writer);
+
+		return {ctx: newContext, setRenderFunc: writer.setRenderFunc, requestRender: writer.requestRender};
+	}
+
 	public function getOutputs():ReadOnlyArray<String> {
 		var arr = Peripheral.instance.getScreens().map(screen -> return screen.getAddr());
 		arr.push("main");

src/lib/Debug.hx

@@ -1,5 +1,6 @@
 package lib;
 
+import kernel.KernelEvents;
 import kernel.log.Log;
 import lua.NativeStringTools;
 import lib.ui.Canvas;
@@ -38,6 +39,12 @@ class Debug {
 		Log.debug("\n" + lines.join("\n"));
 	}
 
+	#if Debug
+	public static function printKernelEventsCount(){
+		KernelEvents.instance.printListenerCount();
+	}
+	#end
+
 	#if webconsole
 	public static function printWeb(msg:String) {
 		HTTP.request("http://127.0.0.1:8080/"+Net.instance.networkID,msg);

src/lib/HomeContext.hx

@@ -18,20 +18,23 @@ class HomeContext {
 	private var ctx:WindowContext = null;
 	private final workspaces:Map<Int, WindowContext> = [];
 	private var currentWorkspace:Int = -1;
-
+	private var requestRender: Void->Void;
 	private var renderer:RootElement;
 
 	public function new() {}
 
 	public function run() {
 		// Create main terminal context
-		ctx = WindowManager.instance.createNewContext();
+		var stateless = WindowManager.instance.createNewStatelessContext();
+		ctx = stateless.ctx;
+		requestRender = stateless.requestRender;
 		WindowManager.instance.focusContextToOutput(ctx, "main");
 
 		renderer = new RootElement();
 
 		ctx.delegateEvents(renderer);
-		render();
+		stateless.setRenderFunc(this.render);
+		requestRender();
 
 		// Register global key bindings to react to main terminal
 		KernelEvents.instance.onKey.handle(e -> {
@@ -71,7 +74,7 @@ class HomeContext {
 	}
 
 	private function focusMainTerm() {
-		render();
+		requestRender();
 		WindowManager.instance.focusContextToOutput(ctx, "main");
 		currentWorkspace = -1;
 	}
@@ -80,7 +83,7 @@ class HomeContext {
 		if (workspaces[contextId] != null) {
 			focusContext(contextId);
 		} else {
-			var newContext = WindowManager.instance.createNewContext();
+			var newContext = WindowManager.instance.createNewBufferedContext();
 
 			// Create new terminal
 			var term = new Terminal();
@@ -93,6 +96,7 @@ class HomeContext {
 
 	private function render() {
 		ctx.clear();
+		ctx.setCursorBlink(false);
 
 		var list = [
 			for (i in 0...MAX_CONTEXT) workspaces.exists(i) ? 'Switch to context ${i}' : 'Create new Terminal on context ${i}'