Implement workspaces

1 files changed, 211 insertions, 0 deletions

diff --git a/sway/tree/workspace.c b/sway/tree/workspace.c
index c37a873c..23c630b6 100644
--- a/sway/tree/workspace.c
+++ b/sway/tree/workspace.c
@@ -2,8 +2,20 @@
 #include <stdbool.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <strings.h>
 #include "sway/container.h"
+#include "sway/input/input-manager.h"
+#include "sway/input/seat.h"
+#include "sway/workspace.h"
 #include "log.h"
+#include "util.h"
+
+char *prev_workspace_name = NULL;
+struct workspace_by_number_data {
+        int len;
+        const char *cset;
+        const char *name;
+};
 
 void next_name_map(swayc_t *ws, void *data) {
         int *count = data;
@@ -24,3 +36,202 @@ char *workspace_next_name(const char *output_name) {
         snprintf(name, len + 1, "%d", count);
         return name;
 }
+
+static bool _workspace_by_number(swayc_t *view, void *data) {
+        if (view->type != C_WORKSPACE) {
+                return false;
+        }
+        struct workspace_by_number_data *wbnd = data;
+        int a = strspn(view->name, wbnd->cset);
+        return a == wbnd->len && strncmp(view->name, wbnd->name, a) == 0;
+}
+
+swayc_t *workspace_by_number(const char* name) {
+        struct workspace_by_number_data wbnd = {0, "1234567890", name};
+        wbnd.len = strspn(name, wbnd.cset);
+        if (wbnd.len <= 0) {
+                return NULL;
+        }
+        return swayc_by_test(&root_container, _workspace_by_number, (void *) &wbnd);
+}
+
+static bool _workspace_by_name(swayc_t *view, void *data) {
+        return (view->type == C_WORKSPACE) &&
+                   (strcasecmp(view->name, (char *) data) == 0);
+}
+
+swayc_t *workspace_by_name(const char *name) {
+        struct sway_seat *seat = input_manager_current_seat(input_manager);
+        swayc_t *current_workspace = NULL, *current_output = NULL;
+        if (seat->focus) {
+                current_workspace = swayc_parent_by_type(seat->focus, C_WORKSPACE);
+                current_output = swayc_parent_by_type(seat->focus, C_OUTPUT);
+        }
+        if (strcmp(name, "prev") == 0) {
+                return workspace_prev(current_workspace);
+        } else if (strcmp(name, "prev_on_output") == 0) {
+                return workspace_output_prev(current_output);
+        } else if (strcmp(name, "next") == 0) {
+                return workspace_next(current_workspace);
+        } else if (strcmp(name, "next_on_output") == 0) {
+                return workspace_output_next(current_output);
+        } else if (strcmp(name, "current") == 0) {
+                return current_workspace;
+        } else {
+                return swayc_by_test(&root_container, _workspace_by_name, (void *) name);
+        }
+}
+
+swayc_t *workspace_create(const char *name) {
+        swayc_t *parent;
+        // Search for workspace<->output pair
+        int i, e = config->workspace_outputs->length;
+        for (i = 0; i < e; ++i) {
+                struct workspace_output *wso = config->workspace_outputs->items[i];
+                if (strcasecmp(wso->workspace, name) == 0) {
+                        // Find output to use if it exists
+                        e = root_container.children->length;
+                        for (i = 0; i < e; ++i) {
+                                parent = root_container.children->items[i];
+                                if (strcmp(parent->name, wso->output) == 0) {
+                                        return new_workspace(parent, name);
+                                }
+                        }
+                        break;
+                }
+        }
+        // Otherwise create a new one
+        struct sway_seat *seat = input_manager_current_seat(input_manager);
+        parent = seat->focus;
+        parent = swayc_parent_by_type(parent, C_OUTPUT);
+        return new_workspace(parent, name);
+}
+
+/**
+ * Get the previous or next workspace on the specified output. Wraps around at
+ * the end and beginning.  If next is false, the previous workspace is returned,
+ * otherwise the next one is returned.
+ */
+swayc_t *workspace_output_prev_next_impl(swayc_t *output, bool next) {
+        if (!sway_assert(output->type == C_OUTPUT,
+                                "Argument must be an output, is %d", output->type)) {
+                return NULL;
+        }
+
+        int i;
+        for (i = 0; i < output->children->length; i++) {
+                if (output->children->items[i] == output->focused) {
+                        return output->children->items[
+                                wrap(i + (next ? 1 : -1), output->children->length)];
+                }
+        }
+
+        // Doesn't happen, at worst the for loop returns the previously active workspace
+        return NULL;
+}
+
+/**
+ * Get the previous or next workspace. If the first/last workspace on an output
+ * is active, proceed to the previous/next output's previous/next workspace. If
+ * next is false, the previous workspace is returned, otherwise the next one is
+ * returned.
+ */
+swayc_t *workspace_prev_next_impl(swayc_t *workspace, bool next) {
+        if (!sway_assert(workspace->type == C_WORKSPACE,
+                                "Argument must be a workspace, is %d", workspace->type)) {
+                return NULL;
+        }
+
+        swayc_t *current_output = workspace->parent;
+        int offset = next ? 1 : -1;
+        int start = next ? 0 : 1;
+        int end;
+        if (next) {
+                end = current_output->children->length - 1;
+        } else {
+                end = current_output->children->length;
+        }
+        int i;
+        for (i = start; i < end; i++) {
+                if (current_output->children->items[i] == workspace) {
+                        return current_output->children->items[i + offset];
+                }
+        }
+
+        // Given workspace is the first/last on the output, jump to the previous/next output
+        int num_outputs = root_container.children->length;
+        for (i = 0; i < num_outputs; i++) {
+                if (root_container.children->items[i] == current_output) {
+                        swayc_t *next_output = root_container.children->items[
+                                wrap(i + offset, num_outputs)];
+                        return workspace_output_prev_next_impl(next_output, next);
+                }
+        }
+
+        // Doesn't happen, at worst the for loop returns the previously active workspace on the active output
+        return NULL;
+}
+
+swayc_t *workspace_output_next(swayc_t *current) {
+        return workspace_output_prev_next_impl(current, true);
+}
+
+swayc_t *workspace_next(swayc_t *current) {
+        return workspace_prev_next_impl(current, true);
+}
+
+swayc_t *workspace_output_prev(swayc_t *current) {
+        return workspace_output_prev_next_impl(current, false);
+}
+
+swayc_t *workspace_prev(swayc_t *current) {
+        return workspace_prev_next_impl(current, false);
+}
+
+bool workspace_switch(swayc_t *workspace) {
+        if (!workspace) {
+                return false;
+        }
+        struct sway_seat *seat = input_manager_current_seat(input_manager);
+        if (!seat || !seat->focus) {
+                return false;
+        }
+        swayc_t *active_ws = seat->focus;
+        if (active_ws->type != C_WORKSPACE) {
+                swayc_parent_by_type(seat->focus, C_WORKSPACE);
+        }
+
+        if (config->auto_back_and_forth
+                        && active_ws == workspace
+                        && prev_workspace_name) {
+                swayc_t *new_ws = workspace_by_name(prev_workspace_name);
+                workspace = new_ws ? new_ws : workspace_create(prev_workspace_name);
+        }
+
+        if (!prev_workspace_name || (strcmp(prev_workspace_name, active_ws->name)
+                                && active_ws != workspace)) {
+                free(prev_workspace_name);
+                prev_workspace_name = malloc(strlen(active_ws->name) + 1);
+                if (!prev_workspace_name) {
+                        wlr_log(L_ERROR, "Unable to allocate previous workspace name");
+                        return false;
+                }
+                strcpy(prev_workspace_name, active_ws->name);
+        }
+
+        // TODO: Deal with sticky containers
+
+        wlr_log(L_DEBUG, "Switching to workspace %p:%s", workspace, workspace->name);
+        // TODO FOCUS: Focus the last view this seat had focused on this workspace
+        if (workspace->children->length) {
+                // TODO FOCUS: This is really fucking stupid
+                sway_seat_set_focus(seat, workspace->children->items[0]);
+        } else {
+                sway_seat_set_focus(seat, workspace);
+        }
+        swayc_t *output = swayc_parent_by_type(workspace, C_OUTPUT);
+        // TODO FOCUS: take a look at this
+        output->focused = workspace;
+        arrange_windows(output, -1, -1);
+        return true;
+}