genlist_example_05.c

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genlist_example_05.c
//Compile with:
//gcc -g genlist_example_05.c -o genlist_example_05 `pkg-config --cflags --libs elementary`
#include <Elementary.h>
#define N_ITEMS 6
typedef struct _Node_Data {
Eina_List *children;
int value;
int level;
Eina_Bool favorite;
} Node_Data;
static Elm_Genlist_Item_Class *_itc = NULL;
static Elm_Genlist_Item_Class *_itp = NULL;
static Elm_Genlist_Item_Class *_itfav = NULL;
static int nitems = 0;
static char *
_item_label_get(void *data, Evas_Object *obj, const char *part)
{
char buf[256] = {0};
Node_Data *d = data;
if (!strcmp(part, "elm.text"))
snprintf(buf, sizeof(buf), "Item # %i (level %i)", d->value, d->level);
return strdup(buf);
}
static Evas_Object *
_item_content_get(void *data, Evas_Object *obj, const char *part)
{
Evas_Object *ic = elm_icon_add(obj);
if (!strcmp(part, "elm.swallow.icon"))
elm_icon_standard_set(ic, "file");
evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
return ic;
}
static void
_item_sel_cb(void *data, Evas_Object *obj, void *event_info)
{
printf("sel item data [%p] on genlist obj [%p], item pointer [%p]\n",
data, obj, event_info);
}
static char *
_parent_label_get(void *data, Evas_Object *obj, const char *part)
{
char buf[256];
Node_Data *d = data;
snprintf(buf, sizeof(buf), "Group %d (%d items)", d->value / 7,
eina_list_count(d->children));
return strdup(buf);
}
static Evas_Object *
_parent_content_get(void *data, Evas_Object *obj, const char *part)
{
Evas_Object *ic = elm_icon_add(obj);
if (!strcmp(part, "elm.swallow.icon"))
elm_icon_standard_set(ic, "folder");
evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
return ic;
}
static char *
_favorite_label_get(void *data, Evas_Object *obj, const char *part)
{
char buf[256] = {0};
Node_Data *d = data;
if (!strcmp(part, "elm.text"))
snprintf(buf, sizeof(buf), "Favorite # %i", d->value);
return strdup(buf);
}
static Evas_Object *
_favorite_content_get(void *data, Evas_Object *obj, const char *part)
{
Evas_Object *ic = elm_icon_add(obj);
if (!strcmp(part, "elm.swallow.icon"))
elm_icon_standard_set(ic, "apps");
evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
return ic;
}
static void
_append_cb(void *data, Evas_Object *o, void *event_info)
{
Evas_Object *list = data;
Elm_Object_Item *glit, *parent = NULL;
Node_Data *pdata, *d = malloc(sizeof(*d));
d->children = NULL;
d->value = nitems++;
d->favorite = EINA_FALSE;
glit = elm_genlist_selected_item_get(list);
if (glit)
parent = elm_genlist_item_parent_get(glit);
if (parent)
{
d->level = elm_genlist_item_expanded_depth_get(parent) + 1;
pdata = elm_object_item_data_get(parent);
pdata->children = eina_list_append(pdata->children, d);
}
else
d->level = 0;
elm_genlist_item_append(list, _itc,
d, parent,
ELM_GENLIST_ITEM_NONE,
_item_sel_cb, NULL);
}
static void
_favorite_cb(void *data, Evas_Object *o, void *event_info)
{
Evas_Object *list = data;
Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
if (!glit) return;
Node_Data *d = elm_object_item_data_get(glit);
d->favorite = !d->favorite;
if (d->favorite)
elm_genlist_item_item_class_update(glit, _itfav);
else
{
if (d->children)
elm_genlist_item_item_class_update(glit, _itp);
else
elm_genlist_item_item_class_update(glit, _itc);
}
elm_genlist_item_update(glit);
}
static void
_add_child_cb(void *data, Evas_Object *o, void *event_info)
{
Evas_Object *list = data;
Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
Elm_Object_Item *glit_prev, *glit_parent;
if (!glit) return;
Node_Data *d = elm_object_item_data_get(glit);
glit_prev = elm_genlist_item_prev_get(glit);
glit_parent = elm_genlist_item_parent_get(glit);
Eina_Bool change_item = !d->children;
// creating new item data
Node_Data *ndata = malloc(sizeof(*ndata));
ndata->value = nitems++;
ndata->children = NULL;
ndata->favorite = EINA_FALSE;
ndata->level = elm_genlist_item_expanded_depth_get(glit) + 1;
d->children = eina_list_append(d->children, ndata);
// Changing leaf item to parent item
if (change_item)
{
elm_object_item_del(glit);
if (glit_prev != glit_parent)
glit = elm_genlist_item_insert_after(list, _itp, d, glit_parent,
glit_prev,
ELM_GENLIST_ITEM_TREE,
_item_sel_cb, NULL);
else
glit = elm_genlist_item_prepend(list, _itp, d, glit_parent,
ELM_GENLIST_ITEM_TREE,
_item_sel_cb, NULL);
elm_genlist_item_expanded_set(glit, EINA_FALSE);
elm_genlist_item_selected_set(glit, EINA_TRUE);
}
else if (elm_genlist_item_expanded_get(glit))
{
elm_genlist_item_append(list, _itc, ndata, glit,
ELM_GENLIST_ITEM_NONE, _item_sel_cb, NULL);
}
elm_genlist_item_update(glit);
}
static void
_clear_list(Node_Data *d)
{
Node_Data *tmp;
EINA_LIST_FREE(d->children, tmp)
_clear_list(tmp);
free(d);
}
static void
_del_item_cb(void *data, Evas_Object *o, void *event_info)
{
Evas_Object *list = data;
Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
Elm_Object_Item *glit_parent = NULL;
if (!glit) return;
Node_Data *pdata, *d = elm_object_item_data_get(glit);
glit_parent = elm_genlist_item_parent_get(glit);
elm_genlist_item_subitems_clear(glit);
elm_object_item_del(glit);
if (glit_parent)
{
pdata = elm_object_item_data_get(glit_parent);
pdata->children = eina_list_remove(pdata->children, d);
}
_clear_list(d);
elm_genlist_item_update(glit_parent);
}
static void
_expand_request_cb(void *data, Evas_Object *o, void *event_info)
{
Elm_Object_Item *glit = event_info;
printf("expand request on item: %p\n", event_info);
elm_genlist_item_expanded_set(glit, EINA_TRUE);
}
static void
_contract_request_cb(void *data, Evas_Object *o, void *event_info)
{
Elm_Object_Item *glit = event_info;
printf("contract request on item: %p\n", event_info);
elm_genlist_item_expanded_set(glit, EINA_FALSE);
}
static void
_expanded_cb(void *data, Evas_Object *o, void *event_info)
{
Eina_List *l;
Elm_Object_Item *glit = event_info;
Node_Data *it_data, *d = elm_object_item_data_get(glit);
Evas_Object *list = elm_object_item_widget_get(glit);
Elm_Genlist_Item_Class *ic;
EINA_LIST_FOREACH(d->children, l, it_data)
{
Elm_Object_Item *nitem;
Elm_Genlist_Item_Type type = ELM_GENLIST_ITEM_NONE;
printf("expanding item: #%d from parent #%d\n", it_data->value, d->value);
if (it_data->favorite)
ic = _itfav;
else if (it_data->children)
{
ic = _itp;
type = ELM_GENLIST_ITEM_TREE;
}
else
ic = _itc;
nitem = elm_genlist_item_append(list, ic, it_data, glit,
type, _item_sel_cb, NULL);
elm_genlist_item_expanded_set(nitem, EINA_FALSE);
}
}
static void
_contracted_cb(void *data, Evas_Object *o, void *event_info)
{
Elm_Object_Item *glit = event_info;
elm_genlist_item_subitems_clear(glit);
}
static Evas_Object *
_button_add(Evas_Object *list, Evas_Object *box, const char *label, Evas_Smart_Cb cb)
{
Evas_Object *bt;
bt = elm_button_add(elm_object_parent_widget_get(list));
elm_object_text_set(bt, label);
elm_box_pack_end(box, bt);
evas_object_show(bt);
if (cb)
evas_object_smart_callback_add(bt, "clicked", cb, list);
return bt;
}
EAPI_MAIN int
elm_main(int argc, char **argv)
{
Evas_Object *win, *box, *fbox;
Evas_Object *list;
int i;
win = elm_win_util_standard_add("genlist", "Genlist");
elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
elm_win_autodel_set(win, EINA_TRUE);
box = elm_box_add(win);
evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
elm_win_resize_object_add(win, box);
evas_object_show(box);
if (!_itc)
{
_itc = elm_genlist_item_class_new();
_itc->item_style = "default";
_itc->func.text_get = _item_label_get;
_itc->func.content_get = _item_content_get;
_itc->func.state_get = NULL;
_itc->func.del = NULL;
}
if (!_itp)
{
_itp = elm_genlist_item_class_new();
_itp->item_style = "default";
_itp->func.text_get = _parent_label_get;
_itp->func.content_get = _parent_content_get;
_itp->func.state_get = NULL;
_itp->func.del = NULL;
}
if (!_itfav)
{
_itfav = elm_genlist_item_class_new();
_itfav->item_style = "default";
_itfav->func.text_get = _favorite_label_get;
_itfav->func.content_get = _favorite_content_get;
_itfav->func.state_get = NULL;
_itfav->func.del = NULL;
}
list = elm_genlist_add(win);
evas_object_size_hint_weight_set(list, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
evas_object_size_hint_align_set(list, EVAS_HINT_FILL, EVAS_HINT_FILL);
elm_box_pack_end(box, list);
evas_object_show(list);
fbox = elm_box_add(win);
elm_box_layout_set(fbox, evas_object_box_layout_flow_horizontal,
NULL, NULL);
evas_object_size_hint_weight_set(fbox, EVAS_HINT_EXPAND, 0);
evas_object_size_hint_align_set(fbox, EVAS_HINT_FILL, EVAS_HINT_FILL);
elm_box_pack_end(box, fbox);
evas_object_show(fbox);
_button_add(list, fbox, "append item", _append_cb);
_button_add(list, fbox, "favorite", _favorite_cb);
_button_add(list, fbox, "add child", _add_child_cb);
_button_add(list, fbox, "del item", _del_item_cb);
Node_Data *pdata = NULL; // data for the parent of the group
Elm_Object_Item *glg = NULL;
for (i = 0; i < N_ITEMS; i++)
{
Elm_Object_Item *gli = NULL;
Node_Data *data = malloc(sizeof(*data)); // data for this item
data->children = NULL;
data->value = i;
data->favorite = EINA_FALSE;
nitems++;
printf("creating item: #%d\n", data->value);
if (i % 3 == 0)
{
glg = gli = elm_genlist_item_append(list, _itp, data, NULL,
ELM_GENLIST_ITEM_TREE,
_item_sel_cb, NULL);
elm_genlist_item_expanded_set(glg, EINA_TRUE);
pdata = data;
data->level = 0;
}
else
{
gli = elm_genlist_item_append(list, _itc, data, glg,
ELM_GENLIST_ITEM_NONE,
_item_sel_cb, NULL);
if (pdata)
pdata->children = eina_list_append(pdata->children, data);
data->level = 1;
}
}
evas_object_smart_callback_add(list, "expand,request", _expand_request_cb, list);
evas_object_smart_callback_add(list, "contract,request", _contract_request_cb, list);
evas_object_smart_callback_add(list, "expanded", _expanded_cb, list);
evas_object_smart_callback_add(list, "contracted", _contracted_cb, list);
evas_object_resize(win, 420, 600);
evas_object_show(win);
elm_run();
return 0;
}
ELM_MAIN()