2 files changed, 37 insertions, 0 deletions

diff --git a/include/config.h b/include/config.h
index 3bdbdb7b..6b48063a 100644
--- a/include/config.h
+++ b/include/config.h
@@ -66,6 +66,7 @@ struct sway_config {
         list_t *cmd_queue;
         list_t *workspace_outputs;
         list_t *output_configs;
+        list_t *criteria;
         struct sway_mode *current_mode;
         uint32_t floating_mod;
         enum swayc_layouts default_orientation;
diff --git a/include/criteria.h b/include/criteria.h
new file mode 100644
index 00000000..5c71d172
--- /dev/null
+++ b/include/criteria.h
@@ -0,0 +1,36 @@
+#ifndef _SWAY_CRITERIA_H
+#define _SWAY_CRITERIA_H
+
+#include "container.h"
+#include "list.h"
+
+/**
+ * Maps criteria (as a list of criteria tokens) to a command list.
+ *
+ * A list of tokens together represent a single criteria string (e.g.
+ * '[class="abc" title="xyz"]' becomes two criteria tokens).
+ *
+ * for_window: Views matching all criteria will have the bound command list
+ * executed on them.
+ *
+ * Set via `for_window <criteria> <cmd list>`.
+ */
+struct criteria {
+        list_t *tokens; // struct crit_token, contains compiled regex.
+        char *crit_raw; // entire criteria string (for logging)
+
+        char *cmdlist;
+};
+
+int criteria_cmp(const void *item, const void *data);
+void free_criteria(struct criteria *crit);
+
+// Pouplate list with crit_tokens extracted from criteria string, returns error
+// string or NULL if successful.
+char *extract_crit_tokens(list_t *tokens, const char *criteria);
+
+// Returns list of criteria that match given container. These criteria have
+// been set with `for_window` commands and have an associated cmdlist.
+list_t *criteria_for(swayc_t *cont);
+
+#endif