Add keymap evaluation with strict event filter

1 files changed, 25 insertions, 1 deletions

diff --git a/include/keymap/KeySeqParser.hpp b/include/keymap/KeySeqParser.hpp
index aefcb62..fac2546 100644
--- a/include/keymap/KeySeqParser.hpp
+++ b/include/keymap/KeySeqParser.hpp
@@ -2,6 +2,7 @@
 
 #include <QtCore/qnamespace.h>
 #include <QtCore>
+#include <cmath>
 
 struct KeyChord {
   Qt::KeyboardModifiers mod;
@@ -9,11 +10,34 @@ struct KeyChord {
 };
 bool operator==(const KeyChord a, const KeyChord b);
 
+typedef QList<KeyChord> KeySequence;
+
+enum KeyMatchType {
+  NoMatch,
+  Match,
+  Pending,
+};
+
 class KeySeqParser {
 public:
+  static const KeyMatchType keySequenceMatch(const KeySequence target,
+                                             const KeySequence current) {
+    for (int i = 0; i < target.length(); i++) {
+      if (current.length() <= i)
+        return KeyMatchType::Pending;
+
+      if (target[i].key != current[i].key ||
+          !target[i].mod.testFlags(current[i].mod))
+        return KeyMatchType::NoMatch;
+    }
+
+    return KeyMatchType::Match;
+  }
+
+public:
   KeySeqParser();
 
-  QList<KeyChord> parse(QString keySequence);
+  KeySequence parse(QString keySequence);
 
 private:
   Qt::Key parseKey(QString keyName);