1 files changed, 64 insertions, 0 deletions
diff --git a/src/main/kotlin/WebOS.kt b/src/main/kotlin/WebOS.kt
new file mode 100644
index 0000000..2ff0b62
--- /dev/null
+++ b/src/main/kotlin/WebOS.kt
@@ -0,0 +1,64 @@
+import kotlinx.browser.document
+import kotlinx.browser.window
+import org.w3c.dom.Element
+import org.w3c.dom.asList
+
+fun main() {
+	console.log("Hello from Kotlin")
+	val webos = WebOS()
+	document.body?.addEventListener("load", {
+		document.body?.querySelectorAll(".webosconsole")?.asList()?.forEach {
+			if (it !is Element) return@forEach
+			webos.registerConsole(it)
+		}
+	})
+}
+
+data class CharacterRun(val text: String, val color: String)
+
+
+abstract class Activity(val console: Console) {
+	abstract fun render(columns: Int, rows: Int): List<List<CharacterRun>>
+}
+
+class Console(val os: WebOS, val renderElement: Element?) {
+	val isVirtual get() = renderElement == null
+	val activityStack = ArrayDeque<Activity>()
+
+	var columns: Int = 80
+	var rows: Int = 46
+
+	var shouldRerender = true
+
+	fun openActivity(activity: Activity) {
+		activityStack.addLast(activity)
+		invalidateRender()
+	}
+
+	fun render() {
+		if (renderElement == null) return
+		if (!shouldRerender) return
+		shouldRerender = false
+		activityStack.last()
+	}
+
+	fun invalidateRender() {
+		shouldRerender = true
+		window.requestAnimationFrame { render() }
+	}
+
+	fun resize(newColumns: Int, newRows: Int) {
+		invalidateRender()
+	}
+
+	// TODO: Handle resizes of the renderElement
+
+}
+
+class WebOS {
+	private val _consoles = mutableListOf<Console>()
+	val consoles get() = _consoles.toList()
+	fun registerConsole(element: Element) {
+		_consoles.add(Console(this, element))
+	}
+}