4coder/4coder_ui_helper.cpp

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/*
* Helpers for ui data structures.
*/
// TOP
// TODO(allen): documentation comment here
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////////////////////////////////
typedef u32 View_Get_UI_Flags;
enum{
ViewGetUIFlag_KeepDataAsIs = 0,
ViewGetUIFlag_ClearData = 1,
};
static b32
view_get_ui_data(Application_Links *app, View_ID view_id, View_Get_UI_Flags flags, UI_Data **ui_data_out, Arena **ui_arena_out){
b32 result = false;
Managed_Scope scope = 0;
if (view_get_managed_scope(app, view_id, &scope)){
Managed_Object ui_data_object = 0;
if (managed_variable_get(app, scope, view_ui_data, &ui_data_object)){
if (ui_data_object == 0){
Managed_Object new_ui_data_object = alloc_managed_memory_in_scope(app, scope, sizeof(UI_Storage), 1);
Managed_Object arena_object = alloc_managed_arena_in_scope(app, scope, (8 << 10));
Arena *arena = 0;
if (managed_object_load_data(app, arena_object, 0, 1, &arena)){
UI_Data *ui_data = push_array(arena, UI_Data, 1);
UI_Storage storage = {};
storage.data = ui_data;
storage.arena = arena;
storage.arena_object = arena_object;
storage.temp = begin_temp_memory(arena);
if (managed_object_store_data(app, new_ui_data_object, 0, 1, &storage)){
if (managed_variable_set(app, scope, view_ui_data, new_ui_data_object)){
ui_data_object = new_ui_data_object;
}
}
}
}
if (ui_data_object != 0){
UI_Storage storage = {};
if (managed_object_load_data(app, ui_data_object, 0, 1, &storage)){
*ui_data_out = storage.data;
*ui_arena_out = storage.arena;
if ((flags & ViewGetUIFlag_ClearData) != 0){
end_temp_memory(storage.temp);
}
result = true;
}
}
}
}
return(result);
}
static b32
view_clear_ui_data(Application_Links *app, View_ID view_id){
b32 result = false;
Managed_Scope scope = 0;
if (view_get_managed_scope(app, view_id, &scope)){
Managed_Object ui_data_object = 0;
if (managed_variable_get(app, scope, view_ui_data, &ui_data_object)){
if (ui_data_object != 0){
UI_Storage storage = {};
if (managed_object_load_data(app, ui_data_object, 0, 1, &storage)){
managed_object_free(app, storage.arena_object);
managed_object_free(app, ui_data_object);
managed_variable_set(app, scope, view_ui_data, 0);
result = true;
}
}
}
}
return(result);
}
////////////////////////////////
static UI_Item*
ui_list_add_item(Arena *arena, UI_List *list, UI_Item item){
UI_Item *node = push_array(arena, UI_Item, 1);
memcpy(node, &item, sizeof(item));
zdll_push_back(list->first, list->last, node);
list->count += 1;
return(node);
}
static i32_Rect
ui__rect_union(i32_Rect a, i32_Rect b){
if (b.x1 > b.x0 && b.y1 > b.y0){
if (a.x0 > b.x0){
a.x0 = b.x0;
}
if (a.x1 < b.x1){
a.x1 = b.x1;
}
if (a.y0 > b.y0){
a.y0 = b.y0;
}
if (a.y1 < b.y1){
a.y1 = b.y1;
}
}
return(a);
}
static void
ui_data_compute_bounding_boxes(UI_Data *ui_data){
i32_Rect neg_inf_rect = {};
neg_inf_rect.x0 = INT32_MAX;
neg_inf_rect.y0 = INT32_MAX;
neg_inf_rect.x1 = INT32_MIN;
neg_inf_rect.y1 = INT32_MIN;
for (u32 i = 0; i < UICoordinates_COUNT; ++i){
ui_data->bounding_box[i] = neg_inf_rect;
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}
for (UI_Item *item = ui_data->list.first;
item != 0;
item = item->next){
if (item->coordinates >= UICoordinates_COUNT){
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item->coordinates = UICoordinates_ViewSpace;
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}
Rect_i32 *box = &ui_data->bounding_box[item->coordinates];
*box = ui__rect_union(*box, item->rect_outer);
}
}
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static void
ui_control_set_top(UI_Data *data, i32 top_y){
data->bounding_box[UICoordinates_ViewSpace].y0 = top_y;
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}
static void
ui_control_set_bottom(UI_Data *data, i32 bottom_y){
data->bounding_box[UICoordinates_ViewSpace].y1 = bottom_y;
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}
static UI_Item*
ui_control_get_mouse_hit(UI_Data *data, Vec2_i32 view_p, Vec2_i32 panel_p){
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UI_Item *result = 0;
for (UI_Item *item = data->list.first; item != 0 && result == 0; item = item->next){
i32_Rect r = item->rect_outer;
switch (item->coordinates){
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case UICoordinates_ViewSpace:
{
if (rect_contains_point(r, view_p)){
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result = item;
}
}break;
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case UICoordinates_PanelSpace:
{
if (rect_contains_point(r, panel_p)){
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result = item;
}
}break;
}
}
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return(result);
}
static UI_Item*
ui_control_get_mouse_hit(UI_Data *data, i32 mx_scrolled, i32 my_scrolled, i32 mx_unscrolled, i32 my_unscrolled){
return(ui_control_get_mouse_hit(data, V2i32(mx_scrolled, my_scrolled), V2i32(mx_unscrolled, my_unscrolled)));
}
////////////////////////////////
static void
view_zero_scroll(Application_Links *app, View_ID view){
GUI_Scroll_Vars zero_scroll = {};
view_set_scroll(app, view, zero_scroll);
}
static void
view_set_vertical_focus(Application_Links *app, View_ID view, i32 y_top, i32 y_bot){
Rect_i32 buffer_region = {};
view_get_buffer_region(app, view, &buffer_region);
GUI_Scroll_Vars scroll = {};
view_get_scroll_vars(app, view, &scroll);
i32 view_y_top = scroll.target_y;
i32 view_y_dim = rect_height(buffer_region);
i32 view_y_bot = view_y_top + view_y_dim;
Buffer_ID buffer = 0;
view_get_buffer(app, view, AccessAll, &buffer);
Face_ID face_id = 0;
get_face_id(app, buffer, &face_id);
Face_Metrics metrics = {};
get_face_metrics(app, face_id, &metrics);
i32 line_dim = (i32)metrics.line_height;
i32 hot_y_top = view_y_top + line_dim*3;
i32 hot_y_bot = view_y_bot - line_dim*3;
if (hot_y_bot - hot_y_top < line_dim*6){
i32 quarter_view_y_dim = view_y_dim/4;
hot_y_top = view_y_top + quarter_view_y_dim;
hot_y_bot = view_y_bot - quarter_view_y_dim;
}
i32 hot_y_dim = hot_y_bot - hot_y_top;
i32 skirt_dim = hot_y_top - view_y_top;
i32 y_dim = y_bot - y_top;
if (y_dim > hot_y_dim){
scroll.target_y = y_top - skirt_dim;
view_set_scroll(app, view, scroll);
}
else{
if (y_top < hot_y_top){
scroll.target_y = y_top - skirt_dim;
view_set_scroll(app, view, scroll);
}
else if (y_bot > hot_y_bot){
scroll.target_y = y_bot + skirt_dim - view_y_dim;
view_set_scroll(app, view, scroll);
}
}
}
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static Vec2
view_space_from_screen_space(Vec2 p, Vec2 file_region_p0, Vec2 scroll_p){
return(p - file_region_p0 + scroll_p);
}
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static Vec2_i32
view_space_from_screen_space(Vec2_i32 p, Vec2_i32 file_region_p0, Vec2_i32 scroll_p){
return(p - file_region_p0 + scroll_p);
}
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static Vec2_i32
get_mouse_position_in_view_space(Mouse_State mouse, Vec2_i32 file_region_p0, Vec2_i32 scroll_p){
return(view_space_from_screen_space(mouse.p, file_region_p0, scroll_p));
}
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static Vec2_i32
get_mouse_position_in_view_space(Application_Links *app, Vec2_i32 file_region_p0, Vec2_i32 scroll_p){
return(get_mouse_position_in_view_space(get_mouse_state(app), file_region_p0, scroll_p));
}
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static Vec2
panel_space_from_screen_space(Vec2 p, Vec2 file_region_p0){
return(p - file_region_p0);
}
static Vec2_i32
panel_space_from_screen_space(Vec2_i32 p, Vec2_i32 file_region_p0){
return(p - file_region_p0);
}
static Vec2_i32
get_mouse_position_in_panel_space(Mouse_State mouse, Vec2_i32 file_region_p0){
return(panel_space_from_screen_space(mouse.p, file_region_p0));
}
static Vec2_i32
get_mouse_position_in_panel_space(Application_Links *app, Vec2_i32 file_region_p0){
return(get_mouse_position_in_panel_space(get_mouse_state(app), file_region_p0));
}
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static Vec2
panel_space_from_view_space(Vec2 p, Vec2 scroll_p){
return(p - scroll_p);
}
static Vec2_i32
panel_space_from_view_space(Vec2_i32 p, Vec2_i32 scroll_p){
return(p - scroll_p);
}
////////////////////////////////
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// TODO(allen): VIEW_16_LIMIT
Lister_State global_lister_state_[16] = {};
Lister_State *global_lister_state = global_lister_state_ - 1;
static Lister_State*
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view_get_lister_state(View_ID view){
return(&global_lister_state[view]);
}
static i32
lister_standard_arena_size_round_up(i32 arena_size){
if (arena_size < (64 << 10)){
arena_size = (64 << 10);
}
else{
arena_size += (4 << 10) - 1;
arena_size -= arena_size%(4 << 10);
}
return(arena_size);
}
static void
init_lister_state(Application_Links *app, Lister_State *state, Heap *heap){
state->initialized = true;
state->hot_user_data = 0;
state->item_index = 0;
state->set_view_vertical_focus_to_item = false;
state->item_count_after_filter = 0;
arena_release_all(&state->lister.arena);
memset(&state->lister, 0, sizeof(state->lister));
}
UI_QUIT_FUNCTION(lister_quit_function){
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Lister_State *state = view_get_lister_state(view);
state->initialized = false;
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view_clear_ui_data(app, view);
}
static UI_Item
lister_get_clicked_item(Application_Links *app, View_ID view_id, Partition *scratch){
UI_Item result = {};
Temp_Memory temp = begin_temp_memory(scratch);
UI_Data *ui_data = 0;
Arena *ui_arena = 0;
if (view_get_ui_data(app, view_id, ViewGetUIFlag_KeepDataAsIs, &ui_data, &ui_arena)){
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GUI_Scroll_Vars scroll_vars = {};
view_get_scroll_vars(app, view_id, &scroll_vars);
Mouse_State mouse = get_mouse_state(app);
Rect_i32 buffer_region = {};
view_get_buffer_region(app, view_id, &buffer_region);
Vec2_i32 region_p0 = buffer_region.p0;
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Vec2_i32 m_view_space = get_mouse_position_in_view_space(mouse, region_p0, V2i32(scroll_vars.scroll_p));
Vec2_i32 m_panel_space = get_mouse_position_in_panel_space(mouse, region_p0);
UI_Item *clicked = ui_control_get_mouse_hit(ui_data, m_view_space, m_panel_space);
if (clicked != 0){
result = *clicked;
}
}
end_temp_memory(temp);
return(result);
}
static f32
lister_get_text_field_height(f32 line_height){
return(line_height);
}
static f32
lister_get_block_height(f32 line_height, b32 is_theme_list){
f32 block_height = 0;
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if (is_theme_list){
block_height = line_height*3 + 6;
}
else{
block_height = line_height*2;
}
return(block_height);
}
static void
lister_update_ui(Application_Links *app, Partition *scratch, View_ID view, Lister_State *state){
b32 is_theme_list = state->lister.data.theme_list;
Rect_f32 screen_rect = {};
view_get_screen_rect(app, view, &screen_rect);
Face_ID face_id = 0;
get_face_id(app, 0, &face_id);
Face_Metrics metrics = {};
get_face_metrics(app, face_id, &metrics);
GUI_Scroll_Vars scroll_vars = {};
view_get_scroll_vars(app, view, &scroll_vars);
f32 x0 = 0;
f32 x1 = (rect_width(screen_rect));
f32 line_height = metrics.line_height;
f32 block_height = lister_get_block_height(line_height, is_theme_list);
f32 text_field_height = lister_get_text_field_height(metrics.line_height);
Temp_Memory full_temp = begin_temp_memory(scratch);
// TODO(allen): switch to float
Rect_i32 buffer_region = {};
view_get_buffer_region(app, view, &buffer_region);
Vec2_i32 view_m = get_mouse_position_in_view_space(app, buffer_region.p0, V2i32(scroll_vars.scroll_p));
f32 y_pos = text_field_height;
state->raw_item_index = -1;
i32 node_count = state->lister.data.options.count;
Lister_Node_Ptr_Array exact_matches = {};
exact_matches.node_ptrs = push_array(scratch, Lister_Node*, 1);
Lister_Node_Ptr_Array before_extension_matches = {};
before_extension_matches.node_ptrs = push_array(scratch, Lister_Node*, node_count);
Lister_Node_Ptr_Array substring_matches = {};
substring_matches.node_ptrs = push_array(scratch, Lister_Node*, node_count);
String key = state->lister.data.key_string;
Absolutes absolutes = {};
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get_absolutes(key, &absolutes, true, true);
b32 has_wildcard = (absolutes.count > 3);
for (Lister_Node *node = state->lister.data.options.first;
node != 0;
node = node->next){
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if (key.size == 0 ||
wildcard_match_s(&absolutes, node->string, false)){
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if (match_insensitive(node->string, key) && exact_matches.count == 0){
exact_matches.node_ptrs[exact_matches.count++] = node;
}
else if (!has_wildcard &&
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match_part_insensitive(node->string, key) &&
node->string.size > key.size &&
node->string.str[key.size] == '.'){
before_extension_matches.node_ptrs[before_extension_matches.count++] = node;
}
else{
substring_matches.node_ptrs[substring_matches.count++] = node;
}
}
}
Lister_Node_Ptr_Array node_ptr_arrays[] = {
exact_matches,
before_extension_matches,
substring_matches,
};
UI_Data *ui_data = 0;
Arena *ui_arena = 0;
if (view_get_ui_data(app, view, ViewGetUIFlag_ClearData, &ui_data, &ui_arena)){
memset(ui_data, 0, sizeof(*ui_data));
UI_Item *highlighted_item = 0;
UI_Item *hot_item = 0;
UI_Item *hovered_item = 0;
i32 item_index_counter = 0;
for (i32 array_index = 0; array_index < ArrayCount(node_ptr_arrays); array_index += 1){
Lister_Node_Ptr_Array node_ptr_array = node_ptr_arrays[array_index];
for (i32 node_index = 0; node_index < node_ptr_array.count; node_index += 1){
Lister_Node *node = node_ptr_array.node_ptrs[node_index];
// TODO(allen): switch to float
i32_Rect item_rect = {};
item_rect.x0 = (i32)x0;
item_rect.y0 = (i32)y_pos;
item_rect.x1 = (i32)x1;
item_rect.y1 = (i32)y_pos + (i32)block_height;
y_pos = (f32)item_rect.y1;
UI_Item item = {};
item.activation_level = UIActivation_None;
item.coordinates = UICoordinates_ViewSpace;
item.rect_outer = item_rect;
item.inner_margin = 3;
if (!is_theme_list){
Fancy_String_List list = {};
push_fancy_string (ui_arena, &list, fancy_id(Stag_Default), node->string);
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Default), " ");
push_fancy_string (ui_arena, &list, fancy_id(Stag_Pop2 ), node->status);
item.lines[0] = list;
item.line_count = 1;
}
else{
//i32 style_index = node->index;
String name = make_lit_string("name");
item.lines[0] = fancy_string_list_single(push_fancy_string(ui_arena, fancy_id(Stag_Default), name));
Fancy_String_List list = {};
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Keyword ), "if ");
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Default ), "(x < ");
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Int_Constant), "0");
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Default ), ") { x = ");
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Int_Constant), "0");
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Default ), "; } ");
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Comment ), "// comment");
item.lines[1] = list;
item.line_count = 2;
}
item.user_data = node->user_data;
UI_Item *item_ptr = ui_list_add_item(ui_arena, &ui_data->list, item);
if (rect_contains_point(item_rect, view_m)){
hovered_item = item_ptr;
}
if (state->item_index == item_index_counter){
highlighted_item = item_ptr;
state->raw_item_index = node->raw_index;
}
item_index_counter += 1;
if (node->user_data == state->hot_user_data && hot_item != 0){
hot_item = item_ptr;
}
}
}
state->item_count_after_filter = item_index_counter;
if (hovered_item != 0){
hovered_item->activation_level = UIActivation_Hover;
}
if (hot_item != 0){
if (hot_item == hovered_item){
hot_item->activation_level = UIActivation_Active;
}
else{
hot_item->activation_level = UIActivation_Hover;
}
}
if (highlighted_item != 0){
highlighted_item->activation_level = UIActivation_Active;
}
if (state->set_view_vertical_focus_to_item){
if (highlighted_item != 0){
view_set_vertical_focus(app, view, highlighted_item->rect_outer.y0, highlighted_item->rect_outer.y1);
}
state->set_view_vertical_focus_to_item = false;
}
{
// TODO(allen): switch to float
i32_Rect item_rect = {};
item_rect.x0 = (i32)x0;
item_rect.y0 = 0;
item_rect.x1 = (i32)x1;
item_rect.y1 = item_rect.y0 + (i32)text_field_height;
y_pos = (f32)item_rect.y1;
UI_Item item = {};
item.activation_level = UIActivation_Active;
item.coordinates = UICoordinates_PanelSpace;
item.rect_outer = item_rect;
item.inner_margin = 0;
{
Fancy_String_List list = {};
push_fancy_string (ui_arena, &list, fancy_id(Stag_Pop1 ), state->lister.data.query);
push_fancy_stringf(ui_arena, &list, fancy_id(Stag_Pop1 ), " ");
push_fancy_string (ui_arena, &list, fancy_id(Stag_Default), state->lister.data.text_field);
item.lines[0] = list;
item.line_count = 1;
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}
item.user_data = 0;
ui_list_add_item(ui_arena, &ui_data->list, item);
}
ui_data_compute_bounding_boxes(ui_data);
// TODO(allen): what to do with control now?
//UI_Control control = ui_list_to_ui_control(scratch, &list);
view_set_quit_ui_handler(app, view, lister_quit_function);
}
end_temp_memory(full_temp);
}
static Lister_Prealloced_String
lister_prealloced(String string){
Lister_Prealloced_String result = {};
result.string = string;
return(result);
}
static void
lister_first_init(Application_Links *app, Lister *lister, void *user_data, i32 user_data_size){
memset(lister, 0, sizeof(*lister));
lister->arena = make_arena(app, (16 << 10));
lister->data.query = make_fixed_width_string(lister->data.query_space);
lister->data.text_field = make_fixed_width_string(lister->data.text_field_space);
lister->data.key_string = make_fixed_width_string(lister->data.key_string_space);
lister->data.user_data = push_array(&lister->arena, char, user_data_size);
lister->data.user_data_size = user_data_size;
push_align(&lister->arena, 8);
if (user_data != 0){
memcpy(lister->data.user_data, user_data, user_data_size);
}
}
static void
lister_begin_new_item_set(Application_Links *app, Lister *lister, i32 list_memory_size){
arena_release_all(&lister->arena);
memset(&lister->data.options, 0, sizeof(lister->data.options));
}
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static void*
lister_add_item(Lister *lister, Lister_Prealloced_String string, Lister_Prealloced_String status,
void *user_data, i32 extra_space){
Lister_Node *node = push_array(&lister->arena, Lister_Node, 1);
node->string = string.string;
node->status = status.string;
node->user_data = user_data;
node->raw_index = lister->data.options.count;
zdll_push_back(lister->data.options.first, lister->data.options.last, node);
lister->data.options.count += 1;
void *result = push_array(&lister->arena, char, extra_space);
push_align(&lister->arena, 8);
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return(result);
}
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static void*
lister_add_item(Lister *lister, Lister_Prealloced_String string, String status,
void *user_data, i32 extra_space){
return(lister_add_item(lister, string, lister_prealloced(string_push_copy(&lister->arena, status)),
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user_data, extra_space));
}
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static void*
lister_add_item(Lister *lister, String string, Lister_Prealloced_String status,
void *user_data, i32 extra_space){
return(lister_add_item(lister, lister_prealloced(string_push_copy(&lister->arena, string)), status,
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user_data, extra_space));
}
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static void*
lister_add_item(Lister *lister, String string, String status, void *user_data, i32 extra_space){
return(lister_add_item(lister,
lister_prealloced(string_push_copy(&lister->arena, string)),
lister_prealloced(string_push_copy(&lister->arena, status)),
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user_data, extra_space));
}
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static void*
lister_add_theme_item(Lister *lister,
Lister_Prealloced_String string, i32 index,
void *user_data, i32 extra_space){
Lister_Node *node = push_array(&lister->arena, Lister_Node, 1);
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node->string = string.string;
node->index = index;
node->user_data = user_data;
node->raw_index = lister->data.options.count;
zdll_push_back(lister->data.options.first, lister->data.options.last, node);
lister->data.options.count += 1;
void *result = push_array(&lister->arena, char, extra_space);
push_align(&lister->arena, 8);
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return(result);
}
static void*
lister_add_theme_item(Lister *lister, String string, i32 index,
void *user_data, i32 extra_space){
return(lister_add_theme_item(lister, lister_prealloced(string_push_copy(&lister->arena, string)), index,
user_data, extra_space));
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}
static void*
lister_get_user_data(Lister_Data *lister_data, i32 index){
void *result = 0;
if (0 <= index && index < lister_data->options.count){
i32 counter = 0;
for (Lister_Node *node = lister_data->options.first;
node != 0;
node = node->next, counter += 1){
if (counter == index){
result = node->user_data;
break;
}
}
}
return(result);
}
static void
lister_call_refresh_handler(Application_Links *app, Lister *lister){
if (lister->data.handlers.refresh != 0){
lister->data.handlers.refresh(app, lister);
}
}
static void
lister_default(Application_Links *app, Partition *scratch, Heap *heap, View_ID view, Lister_State *state, Lister_Activation_Code code){
switch (code){
case ListerActivation_Finished:
{
view_end_ui_mode(app, view);
state->initialized = false;
arena_release_all(&state->lister.arena);
}break;
case ListerActivation_Continue:
{
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view_begin_ui_mode(app, view);
}break;
case ListerActivation_ContinueAndRefresh:
{
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view_begin_ui_mode(app, view);
state->item_index = 0;
lister_call_refresh_handler(app, &state->lister);
lister_update_ui(app, scratch, view, state);
}break;
}
}
static void
lister_call_activate_handler(Application_Links *app, Partition *scratch, Heap *heap, View_ID view, Lister_State *state, void *user_data, b32 activated_by_mouse){
Lister_Data *lister = &state->lister.data;
if (lister->handlers.activate != 0){
lister->handlers.activate(app, scratch, heap, view, state, lister->text_field, user_data, activated_by_mouse);
}
else{
lister_default(app, scratch, heap, view, state, ListerActivation_Finished);
}
}
static void
lister_set_query_string(Lister_Data *lister, char *string){
copy(&lister->query, string);
}
static void
lister_set_query_string(Lister_Data *lister, String string){
copy(&lister->query, string);
}
static void
lister_set_text_field_string(Lister_Data *lister, char *string){
copy(&lister->text_field, string);
}
static void
lister_set_text_field_string(Lister_Data *lister, String string){
copy(&lister->text_field, string);
}
static void
lister_set_key_string(Lister_Data *lister, char *string){
copy(&lister->key_string, string);
}
static void
lister_set_key_string(Lister_Data *lister, String string){
copy(&lister->key_string, string);
}
// BOTTOM