X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fapp%2FStateControl.hpp;fp=src%2Fapp%2FStateControl.hpp;h=818bce5c0369ab0987d3736a28ea516bc52564c4;hb=afd253b2dd10fdf2d4655d3d4a5766e6aa8c1a2c;hp=0000000000000000000000000000000000000000;hpb=aefc5482b27e3d259b6c9f3f1e4cdd9ef2e6a8d2;p=blank.git

diff --git a/src/app/StateControl.hpp b/src/app/StateControl.hpp
new file mode 100644
index 0000000..818bce5
--- /dev/null
+++ b/src/app/StateControl.hpp
@@ -0,0 +1,52 @@
+#ifndef BLANK_APP_STATECONTROL_HPP_
+#define BLANK_APP_STATECONTROL_HPP_
+
+#include <queue>
+
+
+namespace blank {
+
+class Application;
+class State;
+
+class StateControl {
+
+public:
+	void Push(State *s) {
+		cue.emplace(PUSH, s);
+	}
+
+	void Switch(State *s) {
+		cue.emplace(SWITCH, s);
+	}
+
+	void Pop() {
+		cue.emplace(POP);
+	}
+
+	void PopAll() {
+		cue.emplace(POP_ALL);
+	}
+
+
+	void Commit(Application &);
+
+private:
+	enum Command {
+		PUSH,
+		SWITCH,
+		POP,
+		POP_ALL,
+	};
+	struct Memo {
+		State *state;
+		Command cmd;
+		explicit Memo(Command c, State *s = nullptr): state(s), cmd(c) { }
+	};
+	std::queue<Memo> cue;
+
+};
+
+}
+
+#endif