From 9f091c7f82a73144b4eb4ca4f5f800c811fbab46 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Sun, 9 Aug 2015 20:10:26 -0400
Subject: Add movement support

---
 sway/movement.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 sway/movement.c

(limited to 'sway/movement.c')

diff --git a/sway/movement.c b/sway/movement.c
new file mode 100644
index 00000000..197df7b2
--- /dev/null
+++ b/sway/movement.c
@@ -0,0 +1,58 @@
+#include <stdlib.h>
+#include <stdbool.h>
+#include "list.h"
+#include "log.h"
+#include "layout.h"
+#include "movement.h"
+
+void move_focus(enum movement_direction direction) {
+	swayc_t *current = get_focused_container(&root_container);
+	swayc_t *parent = current->parent;
+
+	while (true) {
+		sway_log(L_DEBUG, "Moving focus away from %p", current);
+
+		// Test if we can even make a difference here
+		bool can_move = false;
+		int diff = 0;
+		if (direction == MOVE_LEFT || direction == MOVE_RIGHT) {
+			if (parent->layout == L_HORIZ) {
+				can_move = true;
+				diff = direction == MOVE_LEFT ? -1 : 1;
+			}
+		} else {
+			if (parent->layout == L_VERT) {
+				can_move = true;
+				diff = direction == MOVE_UP ? -1 : 1;
+			}
+		}
+		sway_log(L_DEBUG, "Can move? %s", can_move ? "yes" : "no");
+		if (can_move) {
+			int i;
+			for (i = 0; i < parent->children->length; ++i) {
+				swayc_t *child = parent->children->items[i];
+				if (child == current) {
+					break;
+				}
+			}
+			int desired = i + diff;
+			sway_log(L_DEBUG, "Moving from %d to %d", i, desired);
+			if (desired < 0 || desired >= parent->children->length) {
+				can_move = false;
+			} else {
+				unfocus_all(&root_container);
+				focus_view(parent->children->items[desired]);
+				return;
+			}
+		}
+		if (!can_move) {
+			sway_log(L_DEBUG, "Can't move at current level, moving up tree");
+			current = parent;
+			parent = parent->parent;
+			if (parent->type == C_ROOT) {
+				// Nothing we can do
+				return;
+			}
+		}
+	}
+}
-- 
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