Don't keep menu open after release unless arrow keys are set

I am personally partial to this Mac-like behavior, as it avoids
introducing a modality to the user interface, which is almost always
annoying.

If menus are kept open after button release, then the user is left
in a different mode than earlier, in which key presses are not sent
to the active window, but to the active menu.

This is sometimes useful, but more often than not annoying.

3 files changed, 33 insertions, 5 deletions

diff --git a/src/key.c b/src/key.c
index 5cedd3d..4f0f146 100644
--- a/src/key.c
+++ b/src/key.c
@@ -485,6 +485,30 @@ ValidateKeys()
 
 }
 
+/** Return true if arrow keys are defined. */
+int
+HasArrowKeys()
+{
+	KeyNode *kp;
+	static int r = -1;
+
+	if(r != -1) {
+		return r;
+	}
+
+	for(kp = bindings; kp; kp = kp->next) {
+		if((kp->key & 0xFF) == KEY_UP
+		|| (kp->key & 0xFF) == KEY_DOWN
+		|| (kp->key & 0xFF) == KEY_RIGHT
+		|| (kp->key & 0xFF) == KEY_LEFT) {
+			r = 1;
+			return 1;
+		}
+	}
+	r = 0;
+	return 0;
+}
+
 /** Return true if the key event matches any switching key or its modifiers. */
 int
 Switching(const XKeyEvent *event)
diff --git a/src/key.h b/src/key.h
index 985d7bc..8add1e2 100644
--- a/src/key.h
+++ b/src/key.h
@@ -58,6 +58,8 @@ void ShowKeyMenu(const XKeyEvent *event);
 
 void ValidateKeys();
 
+int HasArrowKeys();
+
 int Switching(const XKeyEvent *event);
 
 #endif
diff --git a/src/menu.c b/src/menu.c
index f65e2c4..997111c 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -281,13 +281,15 @@ MenuLoop(Menu *menu)
 			if(event.xbutton.button == Button5) {
 				break;
 			}
-			if(!hadMotion) {
-				break;
-			}
-			if(abs(event.xbutton.x_root - pressx) < doubleClickDelta) {
-				if(abs(event.xbutton.y_root - pressy) < doubleClickDelta) {
+			if(HasArrowKeys()) {
+				if(!hadMotion) {
 					break;
 				}
+				if(abs(event.xbutton.x_root - pressx) < doubleClickDelta) {
+					if(abs(event.xbutton.y_root - pressy) < doubleClickDelta) {
+						break;
+					}
+				}
 			}
 				
 			if(menu->currentIndex >= 0) {