refactor source tree organization, switch to meson

src/api-impl/android/view/Window.java

@@ -0,0 +1,32 @@
+package android.view;
+
+public class Window {
+	public static interface Callback {}
+	public static class fixme_callback implements Callback {}
+
+	// FIXME private
+	public long native_window;
+
+	private Window.Callback callback;
+
+	public Window() {
+		this.callback = new fixme_callback();
+	}
+
+	public void addFlags(int flags) {}
+	public void setFlags(int flags, int mask) {}
+	public void clearFlags(int flags) {}
+
+	public final Callback getCallback() {
+		return this.callback;
+	}
+	public void setCallback(Window.Callback callback) {
+		this.callback = callback;
+	}
+
+	public void setContentView(View view) {
+		set_widget_as_root(native_window, view.widget);
+	}
+
+	private native void set_widget_as_root(long native_window, long widget);
+}