[FL-1549] Gui Widget module (#598)

* gui_widget: rework with mlib container
* widget: rename gui_widget-> widget; gui_element->widget_element
* gui: move widget from nfc to gui/modules
* nfc: rework widget usage
* nfc: return to ReadEmvAppSuccess scene after ReadEmvDataSuccess exit

Co-authored-by: あく <alleteam@gmail.com>

applications/gui/modules/widget.c

@@ -0,0 +1,152 @@
+#include <furi.h>
+#include "widget.h"
+#include <m-array.h>
+
+ARRAY_DEF(ElementArray, WidgetElement*, M_PTR_OPLIST);
+
+struct Widget {
+    View* view;
+    void* context;
+};
+
+typedef struct {
+    ElementArray_t element;
+} GuiWidgetModel;
+
+static void gui_widget_view_draw_callback(Canvas* canvas, void* _model) {
+    GuiWidgetModel* model = _model;
+    canvas_clear(canvas);
+
+    // Draw all elements
+    ElementArray_it_t it;
+    ElementArray_it(it, model->element);
+    while(!ElementArray_end_p(it)) {
+        WidgetElement* element = *ElementArray_ref(it);
+        if(element->draw != NULL) {
+            element->draw(canvas, element);
+        }
+        ElementArray_next(it);
+    }
+}
+
+static bool gui_widget_view_input_callback(InputEvent* event, void* context) {
+    Widget* widget = context;
+    bool consumed = false;
+
+    // Call all Widget Elements input handlers
+    with_view_model(
+        widget->view, (GuiWidgetModel * model) {
+            ElementArray_it_t it;
+            ElementArray_it(it, model->element);
+            while(!ElementArray_end_p(it)) {
+                WidgetElement* element = *ElementArray_ref(it);
+                if(element->input != NULL) {
+                    consumed |= element->input(event, element);
+                }
+                ElementArray_next(it);
+            }
+            return true;
+        });
+
+    return consumed;
+}
+
+Widget* widget_alloc() {
+    Widget* widget = furi_alloc(sizeof(Widget));
+    widget->view = view_alloc();
+    view_set_context(widget->view, widget);
+    view_allocate_model(widget->view, ViewModelTypeLocking, sizeof(GuiWidgetModel));
+    view_set_draw_callback(widget->view, gui_widget_view_draw_callback);
+    view_set_input_callback(widget->view, gui_widget_view_input_callback);
+
+    with_view_model(
+        widget->view, (GuiWidgetModel * model) {
+            ElementArray_init(model->element);
+            return true;
+        });
+
+    return widget;
+}
+
+void widget_clear(Widget* widget) {
+    furi_assert(widget);
+
+    with_view_model(
+        widget->view, (GuiWidgetModel * model) {
+            ElementArray_it_t it;
+            ElementArray_it(it, model->element);
+            while(!ElementArray_end_p(it)) {
+                WidgetElement* element = *ElementArray_ref(it);
+                furi_assert(element->free);
+                element->free(element);
+                ElementArray_next(it);
+            }
+            ElementArray_clean(model->element);
+            return true;
+        });
+}
+
+void widget_free(Widget* widget) {
+    furi_assert(widget);
+    // Free all elements
+    widget_clear(widget);
+    // Free elements container
+    with_view_model(
+        widget->view, (GuiWidgetModel * model) {
+            ElementArray_clear(model->element);
+            return true;
+        });
+
+    view_free(widget->view);
+    free(widget);
+}
+
+View* widget_get_view(Widget* widget) {
+    furi_assert(widget);
+    return widget->view;
+}
+
+static void widget_add_element(Widget* widget, WidgetElement* element) {
+    furi_assert(widget);
+    furi_assert(element);
+
+    with_view_model(
+        widget->view, (GuiWidgetModel * model) {
+            element->parent = widget;
+            ElementArray_push_back(model->element, element);
+            return true;
+        });
+}
+
+void widget_add_string_element(
+    Widget* widget,
+    uint8_t x,
+    uint8_t y,
+    Align horizontal,
+    Align vertical,
+    Font font,
+    const char* text) {
+    furi_assert(widget);
+    WidgetElement* string_element =
+        widget_element_string_create(x, y, horizontal, vertical, font, text);
+    widget_add_element(widget, string_element);
+}
+
+void widget_add_button_element(
+    Widget* widget,
+    GuiButtonType button_type,
+    const char* text,
+    ButtonCallback callback,
+    void* context) {
+    furi_assert(widget);
+    WidgetElement* button_element =
+        widget_element_button_create(button_type, text, callback, context);
+    widget_add_element(widget, button_element);
+}
+
+void widget_add_icon_element(Widget* widget, uint8_t x, uint8_t y, const Icon* icon) {
+    furi_assert(widget);
+    furi_assert(icon);
+    WidgetElement* icon_element = widget_element_icon_create(x, y, icon);
+    widget_add_element(widget, icon_element);
+}