[FL-1108] iButton fix navigation (#404)

* file_select: process zero file counter
* file_select: process file select view for less than 4 files
* ibutton: change application navigation
* ibutton: add read new key submenu
* file_select: use standart MIN() function
* sd-filesystem: remove unused min() define

applications/gui/modules/file_select.c

@@ -1,6 +1,7 @@
 #include "file_select.h"
 #include <gui/elements.h>
 #include <m-string.h>
+#include <sys/param.h>
 
 #define FILENAME_COUNT 4
 
@@ -42,24 +43,30 @@ static void file_select_draw_callback(Canvas* canvas, void* _model) {
     canvas_clear(canvas);
     canvas_set_font(canvas, FontSecondary);
 
-    for(uint8_t i = 0; i < FILENAME_COUNT; i++) {
-        if(i == model->position) {
-            canvas_set_color(canvas, ColorBlack);
-            canvas_draw_box(canvas, 0, (i * item_height) + 1, item_width, item_height - 2);
-
-            canvas_set_color(canvas, ColorWhite);
-            canvas_draw_dot(canvas, 0, (i * item_height) + 1);
-            canvas_draw_dot(canvas, 0, (i * item_height) + item_height - 2);
-            canvas_draw_dot(canvas, item_width - 1, (i * item_height) + 1);
-            canvas_draw_dot(canvas, item_width - 1, (i * item_height) + item_height - 2);
-        } else {
-            canvas_set_color(canvas, ColorBlack);
-        }
+    if(model->file_count) {
+        for(uint8_t i = 0; i < MIN(FILENAME_COUNT, model->file_count); i++) {
+            if(i == model->position) {
+                canvas_set_color(canvas, ColorBlack);
+                canvas_draw_box(canvas, 0, (i * item_height) + 1, item_width, item_height - 2);
+
+                canvas_set_color(canvas, ColorWhite);
+                canvas_draw_dot(canvas, 0, (i * item_height) + 1);
+                canvas_draw_dot(canvas, 0, (i * item_height) + item_height - 2);
+                canvas_draw_dot(canvas, item_width - 1, (i * item_height) + 1);
+                canvas_draw_dot(canvas, item_width - 1, (i * item_height) + item_height - 2);
+            } else {
+                canvas_set_color(canvas, ColorBlack);
+            }
 
-        canvas_draw_str(
-            canvas, 6, (i * item_height) + item_height - 4, string_get_cstr(model->filename[i]));
+            canvas_draw_str(
+                canvas,
+                6,
+                (i * item_height) + item_height - 4,
+                string_get_cstr(model->filename[i]));
+        }
+    } else {
+        canvas_draw_str(canvas, 6, item_height, "Empty folder");
     }
-
     elements_scrollbar(canvas, model->first_file_index + model->position, model->file_count);
 }
 
@@ -78,9 +85,10 @@ static bool file_select_input_callback(InputEvent* event, void* context) {
                     if(model->position == 0) {
                         if(model->first_file_index == 0) {
                             // wrap
-                            uint16_t max_first_file_index = model->file_count - FILENAME_COUNT;
-                            model->position = FILENAME_COUNT - 1;
-                            model->first_file_index = max_first_file_index;
+                            int16_t max_first_file_index = model->file_count - FILENAME_COUNT;
+                            model->position = MIN(FILENAME_COUNT - 1, model->file_count - 1);
+                            model->first_file_index =
+                                max_first_file_index < 0 ? 0 : max_first_file_index;
                         } else {
                             model->first_file_index--;
                         }
@@ -102,9 +110,11 @@ static bool file_select_input_callback(InputEvent* event, void* context) {
         } else if(event->key == InputKeyDown) {
             with_view_model(
                 file_select->view, (FileSelectModel * model) {
-                    uint16_t max_first_file_index = model->file_count - FILENAME_COUNT;
+                    uint16_t max_first_file_index = model->file_count > FILENAME_COUNT ?
+                                                        model->file_count - FILENAME_COUNT :
+                                                        0;
 
-                    if(model->position >= (FILENAME_COUNT - 1)) {
+                    if(model->position >= MIN(FILENAME_COUNT - 1, model->file_count - 1)) {
                         if(model->first_file_index >= max_first_file_index) {
                             // wrap
                             model->position = 0;

applications/ibutton/scene/ibutton-scene-read-crc-error.cpp

@@ -26,7 +26,7 @@ void iButtonSceneReadCRCError::on_enter(iButtonApp* app) {
 
     dialog_ex_set_header(dialog_ex, "CRC ERROR", 64, 10, AlignCenter, AlignCenter);
     dialog_ex_set_text(dialog_ex, app->get_text_store(), 64, 19, AlignCenter, AlignTop);
-    dialog_ex_set_left_button_text(dialog_ex, "Back");
+    dialog_ex_set_left_button_text(dialog_ex, "Retry");
     dialog_ex_set_right_button_text(dialog_ex, "More");
     dialog_ex_set_result_callback(dialog_ex, callback);
     dialog_ex_set_context(dialog_ex, app);

applications/ibutton/scene/ibutton-scene-read-not-key-error.cpp

@@ -26,7 +26,7 @@ void iButtonSceneReadNotKeyError::on_enter(iButtonApp* app) {
 
     dialog_ex_set_header(dialog_ex, "ERROR:", 64, 10, AlignCenter, AlignCenter);
     dialog_ex_set_text(dialog_ex, app->get_text_store(), 64, 19, AlignCenter, AlignTop);
-    dialog_ex_set_left_button_text(dialog_ex, "Back");
+    dialog_ex_set_left_button_text(dialog_ex, "Retry");
     dialog_ex_set_right_button_text(dialog_ex, "More");
     dialog_ex_set_result_callback(dialog_ex, callback);
     dialog_ex_set_context(dialog_ex, app);

applications/ibutton/scene/ibutton-scene-read-success.cpp

@@ -15,7 +15,7 @@ void iButtonSceneReadSuccess::on_enter(iButtonApp* app) {
     switch(key->get_key_type()) {
     case iButtonKeyType::KeyDallas:
         app->set_text_store(
-            "%02X %02X %02X %02X\n%02X %02X %02X %02X\nDallas",
+            "Dallas\n%02X %02X %02X %02X\n%02X %02X %02X %02X",
             key_data[0],
             key_data[1],
             key_data[2],
@@ -26,16 +26,16 @@ void iButtonSceneReadSuccess::on_enter(iButtonApp* app) {
             key_data[7]);
         break;
     case iButtonKeyType::KeyCyfral:
-        app->set_text_store("%02X %02X\nCyfral", key_data[0], key_data[1]);
+        app->set_text_store("Cyfral\n%02X %02X", key_data[0], key_data[1]);
         break;
     case iButtonKeyType::KeyMetakom:
         app->set_text_store(
-            "%02X %02X %02X %02X\nMetakom", key_data[0], key_data[1], key_data[2], key_data[3]);
+            "Metakom\n%02X %02X %02X %02X", key_data[0], key_data[1], key_data[2], key_data[3]);
         break;
     }
 
     dialog_ex_set_text(dialog_ex, app->get_text_store(), 95, 30, AlignCenter, AlignCenter);
-    dialog_ex_set_left_button_text(dialog_ex, "Back");
+    dialog_ex_set_left_button_text(dialog_ex, "Retry");
     dialog_ex_set_right_button_text(dialog_ex, "More");
     dialog_ex_set_icon(dialog_ex, 0, 1, I_DolphinExcited_64x63);
     dialog_ex_set_result_callback(dialog_ex, callback);

applications/ibutton/scene/ibutton-scene-readed-key-menu.cpp

@@ -8,6 +8,7 @@ typedef enum {
     SubmenuIndexWrite,
     SubmenuIndexEmulate,
     SubmenuIndexNameAndSave,
+    SubmenuIndexReadNewKey,
 } SubmenuIndex;
 
 void iButtonSceneReadedKeyMenu::on_enter(iButtonApp* app) {
@@ -18,6 +19,7 @@ void iButtonSceneReadedKeyMenu::on_enter(iButtonApp* app) {
     submenu_add_item(submenu, "Write", SubmenuIndexWrite, callback, app);
     submenu_add_item(submenu, "Name and save", SubmenuIndexNameAndSave, callback, app);
     submenu_add_item(submenu, "Emulate", SubmenuIndexEmulate, callback, app);
+    submenu_add_item(submenu, "Read new key", SubmenuIndexReadNewKey, callback, app);
 
     view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewSubmenu);
 }
@@ -36,10 +38,13 @@ bool iButtonSceneReadedKeyMenu::on_event(iButtonApp* app, iButtonEvent* event) {
         case SubmenuIndexNameAndSave:
             app->switch_to_next_scene(iButtonApp::Scene::SceneSaveName);
             break;
+        case SubmenuIndexReadNewKey:
+            app->search_and_switch_to_previous_scene({iButtonApp::Scene::SceneRead});
+            break;
         }
         consumed = true;
     } else if(event->type == iButtonEvent::Type::EventTypeBack) {
-        app->search_and_switch_to_previous_scene({iButtonApp::Scene::SceneRead});
+        app->search_and_switch_to_previous_scene({iButtonApp::Scene::SceneStart});
         consumed = true;
     }
 

applications/ibutton/scene/ibutton-scene-save-name.cpp

@@ -48,7 +48,10 @@ bool iButtonSceneSaveName::on_event(iButtonApp* app, iButtonEvent* event) {
             app->switch_to_next_scene(iButtonApp::Scene::SceneSaveSuccess);
         } else {
             app->get_sd_ex_api()->check_error(app->get_sd_ex_api()->context);
-            app->switch_to_next_scene(iButtonApp::Scene::SceneStart);
+            app->search_and_switch_to_previous_scene(
+                {iButtonApp::Scene::SceneReadedKeyMenu,
+                 iButtonApp::Scene::SceneSavedKeyMenu,
+                 iButtonApp::Scene::SceneAddType});
         }
         string_clear(key_file_name);
         consumed = true;

applications/sd-filesystem/sd-filesystem.h

@@ -11,10 +11,6 @@
 #define SD_FS_MAX_FILES _FS_LOCK
 #define SD_STATE_LINES_COUNT 6
 
-#ifndef min
-#define min(a, b) (((a) < (b)) ? (a) : (b))
-#endif
-
 /* api data */
 typedef FIL SDFile;
 typedef DIR SDDir;