+/*
+ * Returns true if and only if the given containers holds the mark.
+ *
+ */
+bool con_has_mark(Con *con, const char *mark) {
+ mark_t *current;
+ TAILQ_FOREACH(current, &(con->marks_head), marks) {
+ if (strcmp(current->name, mark) == 0)
+ return true;
+ }
+
+ return false;
+}
+
+/*
+ * Toggles the mark on a container.
+ * If the container already has this mark, the mark is removed.
+ * Otherwise, the mark is assigned to the container.
+ *
+ */
+void con_mark_toggle(Con *con, const char *mark, mark_mode_t mode) {
+ assert(con != NULL);
+ DLOG("Toggling mark \"%s\" on con = %p.\n", mark, con);
+
+ if (con_has_mark(con, mark)) {
+ con_unmark(con, mark);
+ } else {
+ con_mark(con, mark, mode);
+ }
+}
+
+/*
+ * Assigns a mark to the container.
+ *
+ */
+void con_mark(Con *con, const char *mark, mark_mode_t mode) {
+ assert(con != NULL);
+ DLOG("Setting mark \"%s\" on con = %p.\n", mark, con);
+
+ con_unmark(NULL, mark);
+ if (mode == MM_REPLACE) {
+ DLOG("Removing all existing marks on con = %p.\n", con);
+
+ mark_t *current;
+ while (!TAILQ_EMPTY(&(con->marks_head))) {
+ current = TAILQ_FIRST(&(con->marks_head));
+ con_unmark(con, current->name);
+ }
+ }
+
+ mark_t *new = scalloc(1, sizeof(mark_t));
+ new->name = sstrdup(mark);
+ TAILQ_INSERT_TAIL(&(con->marks_head), new, marks);
+ ipc_send_window_event("mark", con);
+
+ con->mark_changed = true;
+}
+
+/*
+ * Removes marks from containers.
+ * If con is NULL, all containers are considered.
+ * If name is NULL, this removes all existing marks.
+ * Otherwise, it will only remove the given mark (if it is present).
+ *
+ */
+void con_unmark(Con *con, const char *name) {
+ Con *current;
+ if (name == NULL) {
+ DLOG("Unmarking all containers.\n");
+ TAILQ_FOREACH(current, &all_cons, all_cons) {
+ if (con != NULL && current != con)
+ continue;
+
+ if (TAILQ_EMPTY(&(current->marks_head)))
+ continue;
+
+ mark_t *mark;
+ while (!TAILQ_EMPTY(&(current->marks_head))) {
+ mark = TAILQ_FIRST(&(current->marks_head));
+ FREE(mark->name);
+ TAILQ_REMOVE(&(current->marks_head), mark, marks);
+ FREE(mark);
+
+ ipc_send_window_event("mark", current);
+ }
+
+ current->mark_changed = true;
+ }
+ } else {
+ DLOG("Removing mark \"%s\".\n", name);
+ current = (con == NULL) ? con_by_mark(name) : con;
+ if (current == NULL) {
+ DLOG("No container found with this mark, so there is nothing to do.\n");
+ return;
+ }
+
+ DLOG("Found mark on con = %p. Removing it now.\n", current);
+ current->mark_changed = true;
+
+ mark_t *mark;
+ TAILQ_FOREACH(mark, &(current->marks_head), marks) {
+ if (strcmp(mark->name, name) != 0)
+ continue;
+
+ FREE(mark->name);
+ TAILQ_REMOVE(&(current->marks_head), mark, marks);
+ FREE(mark);
+
+ ipc_send_window_event("mark", current);
+ break;
+ }
+ }
+}
+