feat(action): 重构 action 接口为函数指针表并实现 quit 和 raise_or_run

include/zdwm/action.h

@@ -2,6 +2,7 @@
 #define ZDWM_ACTION_H
 
 #include <stdint.h>
+#include <zdwm/types.h>
 
 #if defined(__cplusplus)
 extern "C" {
@@ -12,16 +13,36 @@ typedef union zdwm_action_arg_t {
   int32_t i;
   uint32_t ui;
   const char *str;
+  const void *ptr;
 } zdwm_action_arg_t;
 
-typedef struct zdwm_action_ctx_t zdwm_action_ctx_t;
+typedef struct zdwm_runtime_t zdwm_runtime_t;
 
-typedef void
-zdwm_action_fn(const zdwm_action_ctx_t *ctx, const zdwm_action_arg_t *arg);
-
-struct zdwm_action_ctx_t {
+typedef struct zdwm_action_api_t {
   void (*spawn)(const char *command);
-};
+  void (*quit)(zdwm_runtime_t *runtime, bool restart);
+  void (*raise_or_run)(
+    zdwm_runtime_t *runtime,
+    const char *class_name,
+    const char *command
+  );
+  void (*toggle_fullscreen)(zdwm_runtime_t *runtime);
+  void (*toggle_maximize)(zdwm_runtime_t *runtime);
+  void (*toggle_floating)(zdwm_runtime_t *runtime);
+  void (*toggle_sticky)(zdwm_runtime_t *runtime);
+  void (*switch_workspace)(
+    zdwm_runtime_t *runtime,
+    zdwm_workspace_id_t workspace_id
+  );
+  void (*cycle_layout)(zdwm_runtime_t *runtime, int32_t delta);
+  void (*cycle_current_output)(zdwm_runtime_t *runtime, int32_t delta);
+} zdwm_action_api_t;
+
+typedef void zdwm_action_fn(
+  zdwm_runtime_t *runtime,
+  const zdwm_action_api_t *ctx,
+  const zdwm_action_arg_t *arg
+);
 
 #if defined(__cplusplus)
 }

src/config/defaults.c

@@ -3,13 +3,46 @@
 #include <zdwm/action.h>
 #include <zdwm/types.h>
 
+#include "base/log.h"
 #include "base/macros.h"
 
 static constexpr char launcher[] =
   "rofi -show combi -modes combi -combi-modes window,drun,run,ssh,windowcd";
 
-static void spawn(const zdwm_action_ctx_t *ctx, const zdwm_action_arg_t *arg) {
-  ctx->spawn(arg->str);
+typedef struct raise_or_run_arg_t {
+  const char *class_name;
+  const char *command;
+} raise_or_run_arg_t;
+
+static raise_or_run_arg_t terminal = {"XTerm", "xterm"};
+static raise_or_run_arg_t editor   = {"Emacs", "emacsclient -a '' -r -n"};
+static raise_or_run_arg_t browser  = {"firefox", "firefox-bin"};
+static raise_or_run_arg_t chrome   = {"Google-chrome", "google-chrome-stable"};
+
+static void spawn(
+  zdwm_runtime_t *runtime,
+  const zdwm_action_api_t *api,
+  const zdwm_action_arg_t *arg
+) {
+  api->spawn(arg->str);
+}
+
+static void quit(
+  zdwm_runtime_t *runtime,
+  const zdwm_action_api_t *api,
+  const zdwm_action_arg_t *arg
+) {
+  logger("quit: restart: %s\n", arg->b ? "true" : "false");
+  api->quit(runtime, arg->b);
+}
+
+static void raise_or_run(
+  zdwm_runtime_t *runtime,
+  const zdwm_action_api_t *api,
+  const zdwm_action_arg_t *arg
+) {
+  auto args = (raise_or_run_arg_t *)arg->ptr;
+  api->raise_or_run(runtime, args->class_name, args->command);
 }
 
 bool config_defaults_build(
@@ -71,10 +104,20 @@ bool config_defaults_build(
 
   auto default_mode = api->add_mode(builder, "default");
 
-#define BIND(mode, key, fn, arg) \
-  api->bind(builder, mode, key, fn, (zdwm_action_arg_t)arg)
+#define Alt   "Mod1"
+#define Super "Mod4"
+#define BIND(MODE, KEY, FN, ARG) \
+  api->bind(builder, MODE, KEY, FN, (zdwm_action_arg_t)ARG)
 
-  BIND(default_mode, "Mod4+r", spawn, {.str = launcher});
+  BIND(default_mode, Super "+r", spawn, {.str = launcher});
+  BIND(default_mode, Super "+Shift+q", quit, {.b = false});
+  BIND(default_mode, Super "+Control+r", quit, {.b = true});
+
+  BIND(default_mode, Super "+Return", spawn, {.str = terminal.command});
+  BIND(default_mode, Alt "+Control+r", raise_or_run, {.ptr = &terminal});
+  BIND(default_mode, Super "+e", raise_or_run, {.ptr = &editor});
+  BIND(default_mode, Super "+q", raise_or_run, {.ptr = &browser});
+  BIND(default_mode, Super "+a", raise_or_run, {.ptr = &chrome});
 
 #undef BIND
 

src/core/action.c

@@ -1,11 +1,18 @@
 #include "core/action.h"
 
 #include <paths.h>
+#include <stddef.h>
 #include <stdlib.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
 #include "base/log.h"
+#include "base/macros.h"
+#include "core/command.h"
+#include "core/command_buffer.h"
+#include "core/state.h"
+#include "core/types.h"
+#include "core/window.h"
 
 void spawn(const char *command) {
   if (fork() == 0) {
@@ -21,3 +28,63 @@ void spawn(const char *command) {
 
   wait(0);
 }
+
+void quit(runtime_t *runtime, bool restart) {
+  runtime->will_restart = restart;
+  runtime->running      = false;
+}
+
+static const window_t *
+get_next_window_by_class(state_t *state, const char *class_name) {
+  auto output    = state_output_at(state, state->current_output_index);
+  auto workspace = state_workspace_get(state, output->current_workspace_id);
+
+  size_t start_index = 0;
+  if (!window_id_invalid(workspace->focused_window_id)) {
+    for (size_t i = 0; i < state_window_count(state); ++i) {
+      if (state_window_at(state, i)->id == workspace->focused_window_id) {
+        start_index = i;
+        break;
+      }
+    }
+  }
+
+  for (size_t i = start_index + 1; i < state_window_count(state); ++i) {
+    auto window = state_window_at(state, i);
+    if (strcmp(window->class_name, class_name) == 0) {
+      return window;
+    }
+  }
+
+  for (size_t i = 0; i < MIN(start_index + 1, state_window_count(state)); ++i) {
+    auto window = state_window_at(state, i);
+    if (strcmp(window->class_name, class_name) == 0) {
+      return window;
+    }
+  }
+  return nullptr;
+}
+
+void raise_or_run(
+  zdwm_runtime_t *runtime,
+  const char *class_name,
+  const char *command
+) {
+  auto window = get_next_window_by_class(&runtime->state, class_name);
+  if (!window) {
+    spawn(command);
+    return;
+  }
+
+  command_t switch_workspace_cmd = {
+    .type                          = ZDWM_COMMAND_SWITCH_WORKSPACE,
+    .as.switch_workspace.workspace = window->workspace_id,
+  };
+  command_buffer_push(&runtime->command_buffer, &switch_workspace_cmd);
+
+  command_t focus_cmd = {
+    .type            = ZDWM_COMMAND_FOCUS_WINDOW,
+    .as.focus.window = window->id,
+  };
+  command_buffer_push(&runtime->command_buffer, &focus_cmd);
+}

src/core/action.h

@@ -1,3 +1,11 @@
 #pragma once
 
+#include "core/runtime.h"
+
 void spawn(const char *command);
+void quit(runtime_t *runtime, bool restart);
+void raise_or_run(
+  zdwm_runtime_t *runtime,
+  const char *class_name,
+  const char *command
+);

src/core/policy.c

@@ -18,11 +18,10 @@
 #include "core/window.h"
 #include "core/wm_desc.h"
 
-static void route_key_press(
-  binding_table_t *binding_table,
-  const zdwm_action_ctx_t *action_ctx,
-  const key_press_event_t *e
-) {
+static void
+route_key_press(const policy_context_t *ctx, const key_press_event_t *e) {
+  auto binding_table = ctx->bind_table;
+
   size_t count  = 0;
   auto bindings = binding_table_get_current_bindings(binding_table, &count);
   if (!bindings) return;
@@ -30,7 +29,7 @@ static void route_key_press(
   for (size_t i = 0; i < count; ++i) {
     auto binding = &bindings[i];
     if (binding->modifiers == e->modifiers && binding->keysym == e->keysym) {
-      binding->fn(action_ctx, &binding->arg);
+      binding->fn(ctx->runtime, &ctx->action_api, &binding->arg);
     }
   }
 }
@@ -180,7 +179,7 @@ void policy_route_event(
   auto state = ctx->state;
   switch (event->type) {
   case ZDWM_EVENT_KEY_PRESS:
-    route_key_press(ctx->bind_table, &ctx->action_ctx, &event->as.key_press);
+    route_key_press(ctx, &event->as.key_press);
     break;
   case ZDWM_EVENT_POINTER_ENTER:
     route_pointer_enter(state, event->as.pointer_enter.window, out);

src/core/policy.h

@@ -17,7 +17,8 @@ typedef struct policy_context_t {
   const rules_t *rules;
   const border_config_t *border;
   const layout_registry_t *layouts;
-  const zdwm_action_ctx_t action_ctx;
+  const zdwm_action_api_t action_api;
+  zdwm_runtime_t *runtime;
 } policy_context_t;
 
 /**

src/core/runtime.c

@@ -5,9 +5,9 @@
 #include <stdint.h>
 #include <zdwm/layout.h>
 
-#include "action.h"
 #include "base/array.h"
 #include "base/memory.h"
+#include "core/action.h"
 #include "core/backend.h"
 #include "core/binding.h"
 #include "core/command_buffer.h"
@@ -270,8 +270,11 @@ void runtime_run(runtime_t *runtime) {
     .rules      = &runtime->rules,
     .border     = &runtime->border,
     .layouts    = &runtime->layouts,
-    .action_ctx = {
+    .runtime    = runtime,
+    .action_api = {
       .spawn        = spawn,
+      .quit         = quit,
+      .raise_or_run = raise_or_run,
     },
   };
 

src/core/runtime.h

@@ -26,7 +26,7 @@ typedef struct runtime_init_desc_t {
   binding_table_t *binding_table;
 } runtime_init_desc_t;
 
-typedef struct runtime_t {
+typedef struct zdwm_runtime_t {
   bool running;
   bool will_restart;
 

tests/core/main.c

@@ -1,3 +1,6 @@
+#include <errno.h>
+#include <unistd.h>
+
 #include "base/log.h"
 #include "config/runtime_config.h"
 #include "core/backend.h"
@@ -32,7 +35,11 @@ static void bootstrap(runtime_t *runtime) {
   }
 };
 
-int main(void) {
+char **cmd_argv = nullptr;
+
+int main(int argc, char *argv[]) {
+  cmd_argv = argv;
+
   runtime_t runtime = {0};
 
   bootstrap(&runtime);
@@ -40,5 +47,10 @@ int main(void) {
   runtime_run(&runtime);
   runtime_shutdown(&runtime);
 
+  if (runtime.will_restart) {
+    execvp(cmd_argv[0], cmd_argv);
+    fatal("execv() failed: %s", strerror(errno));
+  }
+
   return 0;
 }