[FL-2491] File browser GUI module (#1237)

* File browser module and test app
* nfc: Add support for saved files in subdirectories
* nfc: Use helper function to get shadow path when loading data
* File browser dialog integration pt.1
* File browser dialog integration pt.2
* Gui,Dialogs: drop file select
* Correct use of dynamic string_t(string_ptr)

Co-authored-by: Yukai Li <yukaili.geek@gmail.com>
Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

applications/debug_tools/file_browser_test/scenes/file_browser_scene.c

@@ -0,0 +1,30 @@
+#include "file_browser_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const file_browser_scene_on_enter_handlers[])(void*) = {
+#include "file_browser_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const file_browser_scene_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "file_browser_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const file_browser_scene_on_exit_handlers[])(void* context) = {
+#include "file_browser_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers file_browser_scene_handlers = {
+    .on_enter_handlers = file_browser_scene_on_enter_handlers,
+    .on_event_handlers = file_browser_scene_on_event_handlers,
+    .on_exit_handlers = file_browser_scene_on_exit_handlers,
+    .scene_num = FileBrowserSceneNum,
+};

applications/debug_tools/file_browser_test/scenes/file_browser_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) FileBrowserScene##id,
+typedef enum {
+#include "file_browser_scene_config.h"
+    FileBrowserSceneNum,
+} FileBrowserScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers file_browser_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "file_browser_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "file_browser_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "file_browser_scene_config.h"
+#undef ADD_SCENE

applications/debug_tools/file_browser_test/scenes/file_browser_scene_browser.c

@@ -0,0 +1,43 @@
+#include "../file_browser_app_i.h"
+#include "furi/check.h"
+#include "furi/log.h"
+#include "furi_hal.h"
+#include "m-string.h"
+
+#define DEFAULT_PATH "/"
+#define EXTENSION "*"
+
+bool file_browser_scene_browser_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    FileBrowserApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        scene_manager_next_scene(app->scene_manager, FileBrowserSceneResult);
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+    }
+    return consumed;
+}
+
+static void file_browser_callback(void* context) {
+    FileBrowserApp* app = context;
+    furi_assert(app);
+    view_dispatcher_send_custom_event(app->view_dispatcher, SceneManagerEventTypeCustom);
+}
+
+void file_browser_scene_browser_on_enter(void* context) {
+    FileBrowserApp* app = context;
+
+    file_browser_set_callback(app->file_browser, file_browser_callback, app);
+
+    file_browser_start(app->file_browser, app->file_path);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FileBrowserAppViewBrowser);
+}
+
+void file_browser_scene_browser_on_exit(void* context) {
+    FileBrowserApp* app = context;
+
+    file_browser_stop(app->file_browser);
+}

applications/debug_tools/file_browser_test/scenes/file_browser_scene_config.h

@@ -0,0 +1,3 @@
+ADD_SCENE(file_browser, start, Start)
+ADD_SCENE(file_browser, browser, Browser)
+ADD_SCENE(file_browser, result, Result)

applications/debug_tools/file_browser_test/scenes/file_browser_scene_result.c

@@ -0,0 +1,36 @@
+#include "../file_browser_app_i.h"
+#include "furi_hal.h"
+#include "m-string.h"
+
+void file_browser_scene_result_ok_callback(InputType type, void* context) {
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, type);
+}
+
+bool file_browser_scene_result_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    //FileBrowserApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+    }
+    return consumed;
+}
+
+void file_browser_scene_result_on_enter(void* context) {
+    FileBrowserApp* app = context;
+
+    widget_add_string_multiline_element(
+        app->widget, 64, 10, AlignCenter, AlignTop, FontSecondary, string_get_cstr(app->file_path));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FileBrowserAppViewResult);
+}
+
+void file_browser_scene_result_on_exit(void* context) {
+    UNUSED(context);
+    FileBrowserApp* app = context;
+    widget_reset(app->widget);
+}

applications/debug_tools/file_browser_test/scenes/file_browser_scene_start.c

@@ -0,0 +1,44 @@
+#include "../file_browser_app_i.h"
+#include "furi_hal.h"
+#include "gui/modules/widget_elements/widget_element_i.h"
+
+static void
+    file_browser_scene_start_ok_callback(GuiButtonType result, InputType type, void* context) {
+    UNUSED(result);
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(app->view_dispatcher, type);
+    }
+}
+
+bool file_browser_scene_start_on_event(void* context, SceneManagerEvent event) {
+    FileBrowserApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        string_set_str(app->file_path, "/any/badusb/demo_windows.txt");
+        scene_manager_next_scene(app->scene_manager, FileBrowserSceneBrowser);
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+    }
+    return consumed;
+}
+
+void file_browser_scene_start_on_enter(void* context) {
+    FileBrowserApp* app = context;
+
+    widget_add_string_multiline_element(
+        app->widget, 64, 20, AlignCenter, AlignTop, FontSecondary, "Press OK to start");
+
+    widget_add_button_element(
+        app->widget, GuiButtonTypeCenter, "Ok", file_browser_scene_start_ok_callback, app);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FileBrowserAppViewStart);
+}
+
+void file_browser_scene_start_on_exit(void* context) {
+    UNUSED(context);
+    FileBrowserApp* app = context;
+    widget_reset(app->widget);
+}