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#include "gui/view.h"
#include "furi/memmgr.h"
#include "view_stack.h"
#include "view_i.h"
#define MAX_VIEWS 3
typedef struct {
View* views[MAX_VIEWS];
} ViewStackModel;
struct ViewStack {
View* view;
};
static void view_stack_draw(Canvas* canvas, void* model);
static bool view_stack_input(InputEvent* event, void* context);
static void view_stack_update_callback(View* view_top_or_bottom, void* context) {
furi_assert(view_top_or_bottom);
furi_assert(context);
View* view_stack_view = context;
if(view_stack_view->update_callback) {
view_stack_view->update_callback(
view_stack_view, view_stack_view->update_callback_context);
}
}
static void view_stack_enter(void* context) {
furi_assert(context);
ViewStack* view_stack = context;
ViewStackModel* model = view_get_model(view_stack->view);
/* if more than 1 composite views hold same view they have to reassign update_callback_context */
for(int i = 0; i < MAX_VIEWS; ++i) {
if(model->views[i]) {
view_set_update_callback_context(model->views[i], view_stack->view);
if(model->views[i]->enter_callback) {
model->views[i]->enter_callback(model->views[i]->context);
}
}
}
view_commit_model(view_stack->view, false);
}
static void view_stack_exit(void* context) {
furi_assert(context);
ViewStack* view_stack = context;
ViewStackModel* model = view_get_model(view_stack->view);
for(int i = 0; i < MAX_VIEWS; ++i) {
if(model->views[i] && model->views[i]->exit_callback) {
model->views[i]->exit_callback(model->views[i]->context);
}
}
view_commit_model(view_stack->view, false);
}
ViewStack* view_stack_alloc(void) {
ViewStack* view_stack = malloc(sizeof(ViewStack));
view_stack->view = view_alloc();
view_allocate_model(view_stack->view, ViewModelTypeLocking, sizeof(ViewStackModel));
view_set_draw_callback(view_stack->view, view_stack_draw);
view_set_input_callback(view_stack->view, view_stack_input);
view_set_context(view_stack->view, view_stack);
view_set_enter_callback(view_stack->view, view_stack_enter);
view_set_exit_callback(view_stack->view, view_stack_exit);
return view_stack;
}
void view_stack_free(ViewStack* view_stack) {
furi_assert(view_stack);
ViewStackModel* model = view_get_model(view_stack->view);
for(int i = 0; i < MAX_VIEWS; ++i) {
if(model->views[i]) {
view_set_update_callback(model->views[i], NULL);
view_set_update_callback_context(model->views[i], NULL);
}
}
view_commit_model(view_stack->view, false);
view_free(view_stack->view);
free(view_stack);
}
static void view_stack_draw(Canvas* canvas, void* _model) {
furi_assert(_model);
ViewStackModel* model = _model;
for(int i = 0; i < MAX_VIEWS; ++i) {
if(model->views[i]) {
view_draw(model->views[i], canvas);
}
}
}
static bool view_stack_input(InputEvent* event, void* context) {
furi_assert(event);
furi_assert(context);
ViewStack* view_stack = context;
bool consumed = false;
ViewStackModel* model = view_get_model(view_stack->view);
for(int i = MAX_VIEWS - 1; i >= 0; i--) {
if(model->views[i] && view_input(model->views[i], event)) {
consumed = true;
break;
}
}
view_commit_model(view_stack->view, false);
return consumed;
}
void view_stack_add_view(ViewStack* view_stack, View* view) {
furi_assert(view_stack);
furi_assert(view);
bool result = false;
ViewStackModel* model = view_get_model(view_stack->view);
for(int i = 0; i < MAX_VIEWS; ++i) {
if(!model->views[i]) {
model->views[i] = view;
view_set_update_callback(model->views[i], view_stack_update_callback);
view_set_update_callback_context(model->views[i], view_stack->view);
result = true;
break;
}
}
view_commit_model(view_stack->view, result);
furi_assert(result);
}
void view_stack_remove_view(ViewStack* view_stack, View* view) {
furi_assert(view_stack);
furi_assert(view);
/* Removing view on-the-go is dangerous, but it is protected with
* Locking model, so system is consistent at any time. */
bool result = false;
ViewStackModel* model = view_get_model(view_stack->view);
for(int i = 0; i < MAX_VIEWS; ++i) {
if(model->views[i] == view) {
view_set_update_callback(model->views[i], NULL);
view_set_update_callback_context(model->views[i], NULL);
model->views[i] = NULL;
result = true;
break;
}
}
view_commit_model(view_stack->view, result);
furi_assert(result);
}
View* view_stack_get_view(ViewStack* view_stack) {
furi_assert(view_stack);
return view_stack->view;
}
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