Merge pull request #1697 from Airblader/feature-1695

Extend mouse commands on i3bar

i3bar/src/config.c

@@ -20,6 +20,7 @@
 #include "common.h"
 
 static char *cur_key;
+static bool parsing_bindings;
 
 /*
  * Parse a key.
@@ -34,6 +35,14 @@ static int config_map_key_cb(void *params_, const unsigned char *keyVal, size_t
     strncpy(cur_key, (const char *)keyVal, keyLen);
     cur_key[keyLen] = '\0';
 
+    if (strcmp(cur_key, "bindings") == 0)
+        parsing_bindings = true;
+
+    return 1;
+}
+
+static int config_end_array_cb(void *params_) {
+    parsing_bindings = false;
     return 1;
 }
 
@@ -63,6 +72,27 @@ static int config_string_cb(void *params_, const unsigned char *val, size_t _len
     if (!strcmp(cur_key, "id") || !strcmp(cur_key, "socket_path"))
         return 1;
 
+    if (parsing_bindings) {
+        if (strcmp(cur_key, "command") == 0) {
+            binding_t *binding = TAILQ_LAST(&(config.bindings), bindings_head);
+            if (binding == NULL) {
+                ELOG("There is no binding to put the current command onto. This is a bug in i3.\n");
+                return 0;
+            }
+
+            if (binding->command != NULL) {
+                ELOG("The binding for input_code = %d already has a command. This is a bug in i3.\n", binding->input_code);
+                return 0;
+            }
+
+            sasprintf(&(binding->command), "%.*s", len, val);
+            return 1;
+        }
+
+        ELOG("Unknown key \"%s\" while parsing bar bindings.\n", cur_key);
+        return 0;
+    }
+
     if (!strcmp(cur_key, "mode")) {
         DLOG("mode = %.*s, len = %d\n", len, val, len);
         config.hide_on_modifier = (len == 4 && !strncmp((const char *)val, "dock", strlen("dock")) ? M_DOCK
@@ -112,17 +142,25 @@ static int config_string_cb(void *params_, const unsigned char *val, size_t _len
         return 1;
     }
 
+    /* This key was sent in <= 4.10.2. We keep it around to avoid breakage for
+     * users updating from that version and restarting i3bar before i3. */
     if (!strcmp(cur_key, "wheel_up_cmd")) {
         DLOG("wheel_up_cmd = %.*s\n", len, val);
-        FREE(config.wheel_up_cmd);
-        sasprintf(&config.wheel_up_cmd, "%.*s", len, val);
+        binding_t *binding = scalloc(sizeof(binding_t));
+        binding->input_code = 4;
+        sasprintf(&(binding->command), "%.*s", len, val);
+        TAILQ_INSERT_TAIL(&(config.bindings), binding, bindings);
         return 1;
     }
 
+    /* This key was sent in <= 4.10.2. We keep it around to avoid breakage for
+     * users updating from that version and restarting i3bar before i3. */
     if (!strcmp(cur_key, "wheel_down_cmd")) {
         DLOG("wheel_down_cmd = %.*s\n", len, val);
-        FREE(config.wheel_down_cmd);
-        sasprintf(&config.wheel_down_cmd, "%.*s", len, val);
+        binding_t *binding = scalloc(sizeof(binding_t));
+        binding->input_code = 5;
+        sasprintf(&(binding->command), "%.*s", len, val);
+        TAILQ_INSERT_TAIL(&(config.bindings), binding, bindings);
         return 1;
     }
 
@@ -232,11 +270,34 @@ static int config_boolean_cb(void *params_, int val) {
     return 0;
 }
 
+/*
+ * Parse an integer value
+ *
+ */
+static int config_integer_cb(void *params_, long long val) {
+    if (parsing_bindings) {
+        if (strcmp(cur_key, "input_code") == 0) {
+            binding_t *binding = scalloc(sizeof(binding_t));
+            binding->input_code = val;
+            TAILQ_INSERT_TAIL(&(config.bindings), binding, bindings);
+
+            return 1;
+        }
+
+        ELOG("Unknown key \"%s\" while parsing bar bindings.\n", cur_key);
+        return 0;
+    }
+
+    return 0;
+}
+
 /* A datastructure to pass all these callbacks to yajl */
 static yajl_callbacks outputs_callbacks = {
     .yajl_null = config_null_cb,
     .yajl_boolean = config_boolean_cb,
+    .yajl_integer = config_integer_cb,
     .yajl_string = config_string_cb,
+    .yajl_end_array = config_end_array_cb,
     .yajl_map_key = config_map_key_cb,
 };
 
@@ -249,6 +310,8 @@ void parse_config_json(char *json) {
     yajl_status state;
     handle = yajl_alloc(&outputs_callbacks, NULL, NULL);
 
+    TAILQ_INIT(&(config.bindings));
+
     state = yajl_parse(handle, (const unsigned char *)json, strlen(json));
 
     /* FIXME: Proper error handling for JSON parsing */

i3bar/src/xcb.c

@@ -468,20 +468,23 @@ void handle_button(xcb_button_press_event_t *event) {
         return;
     }
 
+    /* If a custom command was specified for this mouse button, it overrides
+     * the default behavior. */
+    binding_t *binding;
+    TAILQ_FOREACH(binding, &(config.bindings), bindings) {
+        if (binding->input_code != event->detail)
+            continue;
+
+        i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, binding->command);
+        return;
+    }
+
     switch (event->detail) {
         case 4:
             /* Mouse wheel up. We select the previous ws, if any.
              * If there is no more workspace, don’t even send the workspace
              * command, otherwise (with workspace auto_back_and_forth) we’d end
              * up on the wrong workspace. */
-
-            /* If `wheel_up_cmd [COMMAND]` was specified, it should override
-             * the default behavior */
-            if (config.wheel_up_cmd) {
-                i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, config.wheel_up_cmd);
-                return;
-            }
-
             if (cur_ws == TAILQ_FIRST(walk->workspaces))
                 return;
 
@@ -492,14 +495,6 @@ void handle_button(xcb_button_press_event_t *event) {
              * If there is no more workspace, don’t even send the workspace
              * command, otherwise (with workspace auto_back_and_forth) we’d end
              * up on the wrong workspace. */
-
-            /* if `wheel_down_cmd [COMMAND]` was specified, it should override
-             * the default behavior */
-            if (config.wheel_down_cmd) {
-                i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, config.wheel_down_cmd);
-                return;
-            }
-
             if (cur_ws == TAILQ_LAST(walk->workspaces, ws_head))
                 return;