[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/file_browser_app.c

@@ -0,0 +1,99 @@
+#include "assets_icons.h"
+#include "file_browser_app_i.h"
+#include "gui/modules/file_browser.h"
+#include "m-string.h"
+#include <furi.h>
+#include <furi_hal.h>
+#include <storage/storage.h>
+#include <lib/toolbox/path.h>
+
+static bool file_browser_app_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool file_browser_app_back_event_callback(void* context) {
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static void file_browser_app_tick_event_callback(void* context) {
+    furi_assert(context);
+    FileBrowserApp* app = context;
+    scene_manager_handle_tick_event(app->scene_manager);
+}
+
+FileBrowserApp* file_browser_app_alloc(char* arg) {
+    UNUSED(arg);
+    FileBrowserApp* app = malloc(sizeof(FileBrowserApp));
+
+    app->gui = furi_record_open("gui");
+    app->dialogs = furi_record_open("dialogs");
+
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+
+    app->scene_manager = scene_manager_alloc(&file_browser_scene_handlers, app);
+
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+    view_dispatcher_set_tick_event_callback(
+        app->view_dispatcher, file_browser_app_tick_event_callback, 500);
+    view_dispatcher_set_custom_event_callback(
+        app->view_dispatcher, file_browser_app_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, file_browser_app_back_event_callback);
+
+    app->widget = widget_alloc();
+
+    string_init(app->file_path);
+    app->file_browser = file_browser_alloc(app->file_path);
+    file_browser_configure(app->file_browser, "*", true, &I_badusb_10px, true);
+
+    view_dispatcher_add_view(
+        app->view_dispatcher, FileBrowserAppViewStart, widget_get_view(app->widget));
+    view_dispatcher_add_view(
+        app->view_dispatcher, FileBrowserAppViewResult, widget_get_view(app->widget));
+    view_dispatcher_add_view(
+        app->view_dispatcher, FileBrowserAppViewBrowser, file_browser_get_view(app->file_browser));
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    scene_manager_next_scene(app->scene_manager, FileBrowserSceneStart);
+
+    return app;
+}
+
+void file_browser_app_free(FileBrowserApp* app) {
+    furi_assert(app);
+
+    // Views
+    view_dispatcher_remove_view(app->view_dispatcher, FileBrowserAppViewStart);
+    view_dispatcher_remove_view(app->view_dispatcher, FileBrowserAppViewResult);
+    view_dispatcher_remove_view(app->view_dispatcher, FileBrowserAppViewBrowser);
+    widget_free(app->widget);
+    file_browser_free(app->file_browser);
+
+    // View dispatcher
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    // Close records
+    furi_record_close("gui");
+    furi_record_close("notification");
+    furi_record_close("dialogs");
+
+    string_clear(app->file_path);
+
+    free(app);
+}
+
+int32_t file_browser_app(void* p) {
+    FileBrowserApp* file_browser_app = file_browser_app_alloc((char*)p);
+
+    view_dispatcher_run(file_browser_app->view_dispatcher);
+
+    file_browser_app_free(file_browser_app);
+    return 0;
+}

applications/debug_tools/file_browser_test/file_browser_app_i.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "scenes/file_browser_scene.h"
+
+#include <gui/gui.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <gui/modules/submenu.h>
+#include <gui/modules/file_browser.h>
+#include <dialogs/dialogs.h>
+#include <notification/notification_messages.h>
+#include <gui/modules/variable_item_list.h>
+#include <gui/modules/widget.h>
+
+typedef struct FileBrowserApp FileBrowserApp;
+
+struct FileBrowserApp {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    SceneManager* scene_manager;
+    DialogsApp* dialogs;
+    Widget* widget;
+    FileBrowser* file_browser;
+
+    string_t file_path;
+};
+
+typedef enum {
+    FileBrowserAppViewStart,
+    FileBrowserAppViewBrowser,
+    FileBrowserAppViewResult,
+} FileBrowserAppView;

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);
+}