5 files changed, 53 insertions, 2 deletions

diff --git a/include/container.h b/include/container.h
index 7b0bdb78..157b996a 100644
--- a/include/container.h
+++ b/include/container.h
@@ -74,6 +74,7 @@ struct sway_container {
         bool visible;
         bool is_floating;
         bool is_focused;
+        bool sticky; // floating view always visible on its output
 
         // Attributes that mostly views have.
         char *name;
diff --git a/sway.5.txt b/sway.5.txt
index 9f581a42..dc5e5d66 100644
--- a/sway.5.txt
+++ b/sway.5.txt
@@ -166,6 +166,10 @@ Commands
 **splitv**::
         Equivalent to **split vertical**.
 
+**sticky** <enable|disable|toggle>::
+        If enabled and the windows is floating it will always be present on the active
+        workspace on that output.
+
 **workspace** <name>::
         Switches to the specified workspace.
 
diff --git a/sway/commands.c b/sway/commands.c
index f1dbc09e..a46a0b89 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -33,7 +33,6 @@ struct cmd_handler {
 };
 
 static sway_cmd cmd_bindsym;
-static sway_cmd cmd_orientation;
 static sway_cmd cmd_debuglog;
 static sway_cmd cmd_exec;
 static sway_cmd cmd_exec_always;
@@ -51,6 +50,7 @@ static sway_cmd cmd_log_colors;
 static sway_cmd cmd_mode;
 static sway_cmd cmd_mouse_warping;
 static sway_cmd cmd_move;
+static sway_cmd cmd_orientation;
 static sway_cmd cmd_output;
 static sway_cmd cmd_reload;
 static sway_cmd cmd_resize;
@@ -59,6 +59,7 @@ static sway_cmd cmd_set;
 static sway_cmd cmd_split;
 static sway_cmd cmd_splith;
 static sway_cmd cmd_splitv;
+static sway_cmd cmd_sticky;
 static sway_cmd cmd_workspace;
 static sway_cmd cmd_ws_auto_back_and_forth;
 
@@ -1237,6 +1238,28 @@ static struct cmd_results *cmd_splith(int argc, char **argv) {
         return _do_split(argc, argv, L_HORIZ);
 }
 
+static struct cmd_results *cmd_sticky(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if (config->reading) return cmd_results_new(CMD_FAILURE, "sticky", "Can't be used in config file.");
+        if (!config->active) return cmd_results_new(CMD_FAILURE, "sticky", "Can only be used when sway is running.");
+        if ((error = checkarg(argc, "sticky", EXPECTED_EQUAL_TO, 1))) {
+                return error;
+        }
+        char *action = argv[0];
+        swayc_t *cont = get_focused_view(&root_container);
+        if (strcmp(action, "toggle") == 0) {
+                cont->sticky = !cont->sticky;
+        } else if (strcmp(action, "enable") == 0) {
+                cont->sticky = true;
+        } else if (strcmp(action, "disable") == 0) {
+                cont->sticky = false;
+        } else {
+                return cmd_results_new(CMD_FAILURE, "sticky",
+                                "Expected 'sticky enable|disable|toggle'");
+        }
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
+
 static struct cmd_results *cmd_log_colors(int argc, char **argv) {
         struct cmd_results *error = NULL;
         if (!config->reading) return cmd_results_new(CMD_FAILURE, "log_colors", "Can only be used in config file.");
@@ -1416,6 +1439,7 @@ static struct cmd_handler handlers[] = {
         { "split", cmd_split },
         { "splith", cmd_splith },
         { "splitv", cmd_splitv },
+        { "sticky", cmd_sticky },
         { "workspace", cmd_workspace },
         { "workspace_auto_back_and_forth", cmd_ws_auto_back_and_forth },
 };
diff --git a/sway/container.c b/sway/container.c
index 1634cce0..ba37d7c8 100644
--- a/sway/container.c
+++ b/sway/container.c
@@ -226,6 +226,7 @@ swayc_t *new_view(swayc_t *sibling, wlc_handle handle) {
         view->app_id = app_id ? strdup(app_id) : NULL;
         view->visible = true;
         view->is_focused = true;
+        view->sticky = false;
         // Setup geometry
         const struct wlc_geometry* geometry = wlc_view_get_geometry(handle);
         view->width = 0;
@@ -261,6 +262,7 @@ swayc_t *new_floating_view(wlc_handle handle) {
         const char *app_id = wlc_view_get_app_id(handle);
         view->app_id = app_id ? strdup(app_id) : NULL;
         view->visible = true;
+        view->sticky = false;
 
         // Set the geometry of the floating view
         const struct wlc_geometry* geometry = wlc_view_get_geometry(handle);
diff --git a/sway/workspace.c b/sway/workspace.c
index f18a691f..6c9a39e0 100644
--- a/sway/workspace.c
+++ b/sway/workspace.c
@@ -221,11 +221,31 @@ bool workspace_switch(swayc_t *workspace) {
                 strcpy(prev_workspace_name, active_ws->name);
         }
 
+        // move sticky containers
+        if (swayc_parent_by_type(active_ws, C_OUTPUT) == swayc_parent_by_type(workspace, C_OUTPUT)) {
+                // don't change list while traversing it, use intermediate list instead
+                list_t *stickies = create_list();
+                for (int i = 0; i < active_ws->floating->length; i++) {
+                        swayc_t *cont = active_ws->floating->items[i];
+                        if (cont->sticky) {
+                                list_add(stickies, cont);
+                        }
+                }
+                for (int i = 0; i < stickies->length; i++) {
+                        swayc_t *cont = stickies->items[i];
+                        sway_log(L_DEBUG, "Moving sticky container %p to %p:%s",
+                                        cont, workspace, workspace->name);
+                        swayc_t *parent = remove_child(cont);
+                        add_floating(workspace, cont);
+                        // Destroy old container if we need to
+                        destroy_container(parent);
+                }
+                list_free(stickies);
+        }
         sway_log(L_DEBUG, "Switching to workspace %p:%s", workspace, workspace->name);
         if (!set_focused_container(get_focused_view(workspace))) {
                 return false;
         }
         arrange_windows(workspace, -1, -1);
-
         return true;
 }