Merge pull request #2649 from s3rb31/next

layout toggle: take any combination of layouts as arguments (continuation of #2476)

docs/userguide

@@ -1802,7 +1802,8 @@ The +toggle+ option will toggle the orientation of the split container if it
 contains a single window. Otherwise it makes the current window a split
 container with opposite orientation compared to the parent container.
 Use +layout toggle split+ to change the layout of any split container from
-splitv to splith or vice-versa.
+splitv to splith or vice-versa. You can also define a custom sequence of layouts
+to cycle through with +layout toggle+, see <<manipulating_layout>>.
 
 *Syntax*:
 --------------------------------
@@ -1822,6 +1823,11 @@ Use +layout toggle split+, +layout stacking+, +layout tabbed+, +layout splitv+
 or +layout splith+ to change the current container layout to splith/splitv,
 stacking, tabbed layout, splitv or splith, respectively.
 
+Specify up to four layouts after +layout toggle+ to cycle through them. Every
+time the command is executed, the layout specified after the currently active
+one will be applied. If the currently active layout is not in the list, the
+first layout in the list will be activated.
+
 To make the current window (!) fullscreen, use +fullscreen enable+ (or
 +fullscreen enable global+ for the global mode), to leave either fullscreen
 mode use +fullscreen disable+, and to toggle between these two states use
@@ -1834,6 +1840,7 @@ enable+ respectively +floating disable+ (or +floating toggle+):
 --------------------------------------------
 layout default|tabbed|stacking|splitv|splith
 layout toggle [split|all]
+layout toggle [split|tabbed|stacking|splitv|splith] [split|tabbed|stacking|splitv|splith]…
 --------------------------------------------
 
 *Examples*:
@@ -1848,6 +1855,15 @@ bindsym $mod+x layout toggle
 # Toggle between stacking/tabbed/splith/splitv:
 bindsym $mod+x layout toggle all
 
+# Toggle between stacking/tabbed/splith:
+bindsym $mod+x layout toggle stacking tabbed splith
+
+# Toggle between splitv/tabbed
+bindsym $mod+x layout toggle splitv tabbed
+
+# Toggle between last split layout/tabbed/stacking
+bindsym $mod+x layout toggle split tabbed stacking
+
 # Toggle fullscreen
 bindsym $mod+f fullscreen toggle
 

include/util.h

@@ -69,6 +69,14 @@ Rect rect_sub(Rect a, Rect b);
  */
 __attribute__((pure)) bool name_is_digits(const char *name);
 
+/**
+ * Set 'out' to the layout_t value for the given layout. The function
+ * returns true on success or false if the passed string is not a valid
+ * layout name.
+ *
+ */
+bool layout_from_name(const char *layout_str, layout_t *out);
+
 /**
  * Parses the workspace name as a number. Returns -1 if the workspace should be
  * interpreted as a "named workspace".

parser-specs/commands.spec

@@ -110,7 +110,7 @@ state LAYOUT:
 state LAYOUT_TOGGLE:
   end
       -> call cmd_layout_toggle($toggle_mode)
-  toggle_mode = 'split', 'all'
+  toggle_mode = string
       -> call cmd_layout_toggle($toggle_mode)
 
 # append_layout <path>

src/commands.c

@@ -1489,21 +1489,8 @@ void cmd_move_direction(I3_CMD, const char *direction, long move_px) {
 void cmd_layout(I3_CMD, const char *layout_str) {
     HANDLE_EMPTY_MATCH;
 
-    if (strcmp(layout_str, "stacking") == 0)
-        layout_str = "stacked";
     layout_t layout;
-    /* default is a special case which will be handled in con_set_layout(). */
-    if (strcmp(layout_str, "default") == 0)
-        layout = L_DEFAULT;
-    else if (strcmp(layout_str, "stacked") == 0)
-        layout = L_STACKED;
-    else if (strcmp(layout_str, "tabbed") == 0)
-        layout = L_TABBED;
-    else if (strcmp(layout_str, "splitv") == 0)
-        layout = L_SPLITV;
-    else if (strcmp(layout_str, "splith") == 0)
-        layout = L_SPLITH;
-    else {
+    if (!layout_from_name(layout_str, &layout)) {
         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
         return;
     }

src/con.c

@@ -1719,28 +1719,64 @@ void con_toggle_layout(Con *con, const char *toggle_mode) {
         parent = con->parent;
     DLOG("con_toggle_layout(%p, %s), parent = %p\n", con, toggle_mode, parent);
 
-    if (strcmp(toggle_mode, "split") == 0) {
-        /* Toggle between splits. When the current layout is not a split
-         * layout, we just switch back to last_split_layout. Otherwise, we
-         * change to the opposite split layout. */
-        if (parent->layout != L_SPLITH && parent->layout != L_SPLITV)
-            con_set_layout(con, parent->last_split_layout);
-        else {
-            if (parent->layout == L_SPLITH)
-                con_set_layout(con, L_SPLITV);
-            else
-                con_set_layout(con, L_SPLITH);
+    const char delim[] = " ";
+
+    if (strcasecmp(toggle_mode, "split") == 0 || strstr(toggle_mode, delim)) {
+        /* L_DEFAULT is used as a placeholder value to distinguish if
+         * the first layout has already been saved. (it can never be L_DEFAULT) */
+        layout_t new_layout = L_DEFAULT;
+        bool current_layout_found = false;
+        char *tm_dup = sstrdup(toggle_mode);
+        char *cur_tok = strtok(tm_dup, delim);
+
+        for (layout_t layout; cur_tok != NULL; cur_tok = strtok(NULL, delim)) {
+            if (strcasecmp(cur_tok, "split") == 0) {
+                /* Toggle between splits. When the current layout is not a split
+                 * layout, we just switch back to last_split_layout. Otherwise, we
+                 * change to the opposite split layout. */
+                if (parent->layout != L_SPLITH && parent->layout != L_SPLITV) {
+                    layout = parent->last_split_layout;
+                } else {
+                    layout = (parent->layout == L_SPLITH) ? L_SPLITV : L_SPLITH;
+                }
+            } else {
+                bool success = layout_from_name(cur_tok, &layout);
+                if (!success || layout == L_DEFAULT) {
+                    ELOG("The token '%s' was not recognized and has been skipped.\n", cur_tok);
+                    continue;
+                }
+            }
+
+            /* If none of the specified layouts match the current,
+             * fall back to the first layout in the list */
+            if (new_layout == L_DEFAULT) {
+                new_layout = layout;
+            }
+
+            /* We found the active layout in the last iteration, so
+             * now let's activate the current layout (next in list) */
+            if (current_layout_found) {
+                new_layout = layout;
+                free(tm_dup);
+                break;
+            }
+
+            if (parent->layout == layout) {
+                current_layout_found = true;
+            }
         }
-    } else {
+
+        con_set_layout(con, new_layout);
+    } else if (strcasecmp(toggle_mode, "all") == 0 || strcasecmp(toggle_mode, "default") == 0) {
         if (parent->layout == L_STACKED)
             con_set_layout(con, L_TABBED);
         else if (parent->layout == L_TABBED) {
-            if (strcmp(toggle_mode, "all") == 0)
+            if (strcasecmp(toggle_mode, "all") == 0)
                 con_set_layout(con, L_SPLITH);
             else
                 con_set_layout(con, parent->last_split_layout);
         } else if (parent->layout == L_SPLITH || parent->layout == L_SPLITV) {
-            if (strcmp(toggle_mode, "all") == 0) {
+            if (strcasecmp(toggle_mode, "all") == 0) {
                 /* When toggling through all modes, we toggle between
                  * splith/splitv, whereas normally we just directly jump to
                  * stacked. */

src/util.c

@@ -66,6 +66,34 @@ __attribute__((pure)) bool name_is_digits(const char *name) {
     return true;
 }
 
+/*
+ * Set 'out' to the layout_t value for the given layout. The function
+ * returns true on success or false if the passed string is not a valid
+ * layout name.
+ *
+ */
+bool layout_from_name(const char *layout_str, layout_t *out) {
+    if (strcmp(layout_str, "default") == 0) {
+        *out = L_DEFAULT;
+        return true;
+    } else if (strcasecmp(layout_str, "stacked") == 0 ||
+               strcasecmp(layout_str, "stacking") == 0) {
+        *out = L_STACKED;
+        return true;
+    } else if (strcasecmp(layout_str, "tabbed") == 0) {
+        *out = L_TABBED;
+        return true;
+    } else if (strcasecmp(layout_str, "splitv") == 0) {
+        *out = L_SPLITV;
+        return true;
+    } else if (strcasecmp(layout_str, "splith") == 0) {
+        *out = L_SPLITH;
+        return true;
+    }
+
+    return false;
+}
+
 /*
  * Parses the workspace name as a number. Returns -1 if the workspace should be
  * interpreted as a "named workspace".

testcases/t/192-layout.t

@@ -95,4 +95,72 @@ cmd 'layout toggle all';
 ($nodes, $focus) = get_ws_content($tmp);
 is($nodes->[1]->{layout}, 'splitv', 'layout now splitv');
 
+cmd 'layout toggle splith splitv';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'splith', 'layout now splith');
+
+cmd 'layout toggle splith splitv';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'splitv', 'layout now splitv');
+
+cmd 'layout toggle stacked splitv tabbed';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'tabbed', 'layout now tabbed');
+
+cmd 'layout toggle stacking splitv tabbed';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'stacked', 'layout now stacked');
+
+cmd 'layout toggle stacking splitv tabbed';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'splitv', 'layout now splitv');
+
+cmd 'layout toggle splitv i stacking tabbed';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'stacked', 'layout now stacked');
+
+cmd 'layout toggle stacked';
+($nodes, $focus) = get_ws_content($tmp);
+# this is correct if it does nothing
+is($nodes->[1]->{layout}, 'stacked', 'layout now tabbed');
+
+cmd 'layout toggle tabbed stacked';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'tabbed', 'layout now stacked');
+
+# obsoletes 'split' ;)
+cmd 'layout toggle splith splitv';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'splith', 'layout now splith');
+
+# nonsense but works expectedly
+cmd 'layout toggle split split';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'splitv', 'layout now splitv');
+
+cmd 'layout toggle split split';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'splith', 'layout now splith');
+
+# testing with arbitrary length and garbage
+cmd 'layout toggle stacking splith tabbed splitv stacking';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'tabbed', 'layout now tabbed');
+
+cmd 'layout toggle stacking splith garbage tabbed splitv stacking';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'splitv', 'layout now splitv');
+
+cmd 'layout toggle stacking splith garbage tabbed splitv stacking';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'stacked', 'layout now stacked');
+
+cmd 'layout toggle splitv splith garbage splitv tabbed stacking splitv';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'splitv', 'layout now splitv');
+
+cmd 'layout toggle splitv garbage    tabbed';
+($nodes, $focus) = get_ws_content($tmp);
+is($nodes->[1]->{layout}, 'tabbed', 'layout now tabbed');
+
 done_testing;