• I made the below example written in C for detecting "Workspace 1" events but I could not figure out how to send requests to the wayland proxy to change active or current workspace.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wayland-client.h>
#include "ext-workspace-v1-client-protocol.h"

struct wl_display *display = NULL;
struct wl_compositor *compositor = NULL;
struct ext_workspace_manager_v1 *workspace_manager = NULL;

static const struct ext_workspace_manager_v1_listener workspace_manager_listener;
static const struct ext_workspace_handle_v1_listener workspace_handle_listener;

struct workspace_data {
char name[256]; // Store the workspace name
};

static void global_registry_handler(void *data, struct wl_registry *registry, uint32_t id,
const char *interface, uint32_t version)
{
printf("Got a registry event for %s id %d\n", interface, id);
if (strcmp(interface, "wl_compositor") == 0)
compositor = wl_registry_bind(registry,
id,
&wl_compositor_interface,
1);
if (strcmp(interface, "ext_workspace_manager_v1") == 0) {
workspace_manager = wl_registry_bind(registry,
id,
&ext_workspace_manager_v1_interface,
1);

    ext_workspace_manager_v1_add_listener(workspace_manager, &workspace_manager_listener, NULL);
}

}

static void global_registry_remover(void *data, struct wl_registry *registry, uint32_t id)
{
printf("Got a registry losing event for %d\n", id);
}

static const struct wl_registry_listener registry_listener = {
global_registry_handler,
global_registry_remover
};

static void workspace_id(void *data, struct ext_workspace_handle_v1 *workspace, const char *id) {
printf("Workspace ID: %s\n", id);
}

static void workspace_name(void *data, struct ext_workspace_handle_v1 *workspace, const char *new_name) {
//printf("Workspace name: %s\n", name);
if (!data || !new_name) {
fprintf(stderr, "workspace_name: NULL data or new_name\n");
return;
}

struct workspace_data *ws_data = (struct workspace_data *)data;
strncpy(ws_data->name, new_name, sizeof(ws_data->name) - 1);
ws_data->name[sizeof(ws_data->name) - 1] = '\0';  // Ensure null termination

printf("Workspace name updated: %s\n", ws_data->name);

}

static void workspace_coordinates(void *data, struct ext_workspace_handle_v1 *workspace, struct wl_array *coordinates) {
printf("Workspace Coordinates: ");
// Assuming you need to print each coordinate (e.g., for an array of integers)
for (size_t i = 0; i < coordinates->size / sizeof(int); i++) {
printf("%d ", ((int *)coordinates->data)[i]);
}
printf("\n");
}

static void workspace_state(void *data, struct ext_workspace_handle_v1 *workspace, uint32_t state) {
// Assuming the workspace name is passed along with the event
//printf("Workspace state changed: %u\n", state);
if (!data) {
fprintf(stderr, "workspace_state: NULL data\n");
return;
}

struct workspace_data *ws_data = (struct workspace_data *)data;
//printf("Workspace '%s' state changed: %u\n", ws_data->name, state);
if (state == 1 && strcmp(ws_data->name, "Workspace 1") == 0) {
    printf("{\"text\": \"1\", \"class\": \"activated\"}\n");
    fflush(stdout); // Ensure immediate output for Waybar
} else if (state == 0 && strcmp(ws_data->name, "Workspace 1") == 0) {
    printf("{\"text\": \"1\", \"class\": \"deactivated\"}\n");
    fflush(stdout); // Ensure immediate output for Waybar
}

}

static void workspace_capabilities(void *data, struct ext_workspace_handle_v1 *workspace, uint32_t capabilities) {
printf("Workspace capabilities: %u\n", capabilities);
}

static void workspace_removed(void *data, struct ext_workspace_handle_v1 *workspace) {
printf("Workspace removed\n");
}

static void workspace_group_event(void *data, struct ext_workspace_manager_v1 *manager, struct ext_workspace_group_handle_v1 *group_handle) {
printf("Workspace group event triggered\n");
// Handle the workspace group event
}

static void workspace_event(void *data, struct ext_workspace_manager_v1 *manager, struct ext_workspace_handle_v1 *workspace) {
printf("Received workspace event for new workspace\n");
// Logic for handling "workspace" events.
//void (listener)(void) = (void ()(void)) &workspace_handle_listener;
//wl_proxy_add_listener((struct wl_proxy *)workspace, listener, NULL);
struct workspace_data *ws_data = calloc(1, sizeof(struct workspace_data));
if (!ws_data) {
fprintf(stderr, "Failed to allocate workspace_data\n");
return;
}
ext_workspace_handle_v1_add_listener(workspace, &workspace_handle_listener, ws_data);

}

static void done_event(void *data, struct ext_workspace_manager_v1 *manager) {
printf("Done event triggered\n\n");
// Logic for handling "done" events.
}

static void finished_event(void *data, struct ext_workspace_manager_v1 *manager) {
printf("Finished event triggered\n");
// Logic for handling "finished" events.
}

static const struct ext_workspace_handle_v1_listener workspace_handle_listener = {
.id = workspace_id,
.name = workspace_name,
.coordinates = workspace_coordinates,
.state = workspace_state,
.capabilities = workspace_capabilities,
.removed = workspace_removed,
};

static const struct ext_workspace_manager_v1_listener workspace_manager_listener = {
.workspace_group = workspace_group_event, // Now correctly matches the expected type
.workspace = workspace_event,
.done = done_event,
.finished = finished_event
};

int main(int argc, char **argv) {

display = wl_display_connect(NULL);
if (display == NULL) {
fprintf(stderr, "Can't connect to display\n");
exit(1);
}
printf("connected to display\n");

struct wl_registry *registry = wl_display_get_registry(display);
wl_registry_add_listener(registry, &registry_listener, NULL);

wl_display_dispatch(display);
wl_display_roundtrip(display);

if (compositor == NULL) {
fprintf(stderr, "Can't find compositor\n");
exit(1);
} else {
fprintf(stderr, "Found compositor\n");
}

if (workspace_manager == NULL) {
    fprintf(stderr, "Can't find workspace_manager\n");
    exit(1);
    } else {
    fprintf(stderr, "Found workspace_manager\n\n");
    }


while (wl_display_dispatch(display) != -1) {
    // Ensure the listener is added once and not in every loop

}
    
    


wl_display_disconnect(display);
printf("disconnected from display\n");

exit(0);

}

@nabzord See #4016 for a good start into this direction.