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 EINA_UNUSED, 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 EINA_UNUSED, 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 EINA_UNUSED, const char *part EINA_UNUSED)
{
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 EINA_UNUSED, 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 EINA_UNUSED, 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 EINA_UNUSED, 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 EINA_UNUSED, void *event_info EINA_UNUSED)
{
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 EINA_UNUSED, void *event_info EINA_UNUSED)
{
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 EINA_UNUSED, void *event_info EINA_UNUSED)
{
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 EINA_UNUSED, void *event_info EINA_UNUSED)
{
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 EINA_UNUSED, Evas_Object *o EINA_UNUSED, 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 EINA_UNUSED, Evas_Object *o EINA_UNUSED, 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 EINA_UNUSED, Evas_Object *o EINA_UNUSED, 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 EINA_UNUSED, Evas_Object *o EINA_UNUSED, 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 EINA_UNUSED, char **argv EINA_UNUSED)
{
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()
EVAS_HINT_EXPAND
#define EVAS_HINT_EXPAND
Use with evas_object_size_hint_weight_set(), evas_object_size_hint_weight_get(), evas_object_size_hin...
Definition Evas_Common.h:297
EVAS_ASPECT_CONTROL_VERTICAL
@ EVAS_ASPECT_CONTROL_VERTICAL
Use all vertical container space to place an object, using the given aspect.
Definition Evas_Common.h:377
EVAS_HINT_FILL
#define EVAS_HINT_FILL
Use with evas_object_size_hint_align_set(), evas_object_size_hint_align_get(), evas_object_size_hint_...
Definition Evas_Common.h:298
Evas_Smart_Cb
void(* Evas_Smart_Cb)(void *data, Evas_Object *obj, void *event_info)
Evas smart objects' "smart callback" function signature.
Definition Evas_Common.h:463
eina_list_append
EINA_API Eina_List * eina_list_append(Eina_List *list, const void *data)
Appends the given data to the given linked list.
Definition eina_list.c:584
Eina_List
struct _Eina_List Eina_List
Type for a generic double linked list.
Definition eina_list.h:304
eina_list_remove
EINA_API Eina_List * eina_list_remove(Eina_List *list, const void *data)
Removes the first instance of the specified data from the given list.
Definition eina_list.c:773
EINA_LIST_FOREACH
#define EINA_LIST_FOREACH(list, l, _data)
Definition for the macro to iterate over a list.
Definition eina_list.h:1415
EINA_LIST_FREE
#define EINA_LIST_FREE(list, data)
Definition for the macro to remove each list node while having access to each node's data.
Definition eina_list.h:1629
EINA_TRUE
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition eina_types.h:539
EINA_FALSE
#define EINA_FALSE
boolean value FALSE (numerical value 0)
Definition eina_types.h:533
Eina_Bool
unsigned char Eina_Bool
Type to mimic a boolean.
Definition eina_types.h:527
EINA_UNUSED
#define EINA_UNUSED
Used to indicate that a function parameter is purposely unused.
Definition eina_types.h:339
elm_box_add
Evas_Object * elm_box_add(Evas_Object *parent)
Add a new box to the parent.
Definition elm_box.c:363
elm_box_pack_end
void elm_box_pack_end(Elm_Box *obj, Efl_Canvas_Object *subobj)
Add an object at the end of the pack list.
Definition elm_box_eo.legacy.c:57
elm_box_layout_set
void elm_box_layout_set(Eo *obj, Evas_Object_Box_Layout cb, const void *data, Ecore_Cb free_data)
Set the layout defining function to be used by the box.
Definition elm_box.c:502
elm_button_add
Evas_Object * elm_button_add(Evas_Object *parent)
Add a new button to the parent's canvas.
Definition efl_ui_button.c:459
ELM_MAIN
#define ELM_MAIN()
macro to be used after the elm_main() function
Definition elm_general.h:556
elm_object_item_widget_get
Efl_Canvas_Object * elm_object_item_widget_get(const Elm_Widget_Item *obj)
Get the widget object's handle which contains a given item.
Definition elm_widget_item_eo.legacy.c:135
elm_object_item_data_get
void * elm_object_item_data_get(const Elm_Object_Item *it)
Get the data associated with an object item.
Definition efl_ui_widget.c:3796
elm_policy_set
Eina_Bool elm_policy_set(unsigned int policy, int value)
Set a new policy's value (for a given policy group/identifier).
Definition elm_main.c:1380
Elm_Object_Item
Eo Elm_Object_Item
An Elementary Object item handle.
Definition elm_object_item.h:6
elm_object_item_del
void elm_object_item_del(Eo *obj)
Delete the given item.
Definition elm_main.c:2017
elm_run
void elm_run(void)
Run Elementary's main loop.
Definition elm_main.c:1357
ELM_POLICY_QUIT_LAST_WINDOW_CLOSED
@ ELM_POLICY_QUIT_LAST_WINDOW_CLOSED
quit when the application's last window is closed
Definition elm_general.h:248
ELM_POLICY_QUIT
@ ELM_POLICY_QUIT
under which circumstances the application should quit automatically.
Definition elm_general.h:227
elm_genlist_selected_item_get
Elm_Widget_Item * elm_genlist_selected_item_get(const Elm_Genlist *obj)
Get the selected item in the genlist.
Definition elm_genlist_eo.legacy.c:153
elm_genlist_add
Evas_Object * elm_genlist_add(Evas_Object *parent)
Add a new genlist widget to the given parent Elementary (container) object.
Definition elm_genlist.c:5998
elm_genlist_item_prepend
Elm_Widget_Item * elm_genlist_item_prepend(Elm_Genlist *obj, const Elm_Genlist_Item_Class *itc, const void *data, Elm_Widget_Item *parent, Elm_Genlist_Item_Type type, Evas_Smart_Cb func, const void *func_data)
Prepend a new item in a given genlist widget.
Definition elm_genlist_eo.legacy.c:231
elm_genlist_item_append
Elm_Widget_Item * elm_genlist_item_append(Elm_Genlist *obj, const Elm_Genlist_Item_Class *itc, const void *data, Elm_Widget_Item *parent, Elm_Genlist_Item_Type type, Evas_Smart_Cb func, const void *func_data)
Append a new item in a given genlist widget.
Definition elm_genlist_eo.legacy.c:243
elm_genlist_item_class_new
Elm_Genlist_Item_Class * elm_genlist_item_class_new(void)
Create a new genlist item class in a given genlist widget.
Definition elm_genlist.c:8392
elm_genlist_item_insert_after
Elm_Widget_Item * elm_genlist_item_insert_after(Elm_Genlist *obj, const Elm_Genlist_Item_Class *itc, const void *data, Elm_Widget_Item *parent, Elm_Widget_Item *after_it, Elm_Genlist_Item_Type type, Evas_Smart_Cb func, const void *func_data)
Insert an item after another in a genlist widget.
Definition elm_genlist_eo.legacy.c:195
elm_genlist_item_parent_get
Elm_Widget_Item * elm_genlist_item_parent_get(const Elm_Genlist_Item *obj)
Get the parent item of the given item.
Definition elm_genlist_item_eo.legacy.c:15
elm_genlist_item_expanded_set
void elm_genlist_item_expanded_set(Elm_Genlist_Item *obj, Eina_Bool expanded)
Sets the expanded state of an item.
Definition elm_genlist_item_eo.legacy.c:39
elm_genlist_item_subitems_clear
void elm_genlist_item_subitems_clear(Elm_Genlist_Item *obj)
Remove all sub-items (children) of the given item.
Definition elm_genlist_item_eo.legacy.c:123
elm_genlist_item_expanded_get
Eina_Bool elm_genlist_item_expanded_get(const Elm_Genlist_Item *obj)
Get the expanded state of an item.
Definition elm_genlist_item_eo.legacy.c:45
elm_genlist_item_prev_get
Elm_Widget_Item * elm_genlist_item_prev_get(const Elm_Genlist_Item *obj)
Get the previous item in a genlist widget's internal list of items, given a handle to one of those it...
Definition elm_genlist_item_eo.legacy.c:3
Elm_Genlist_Item_Type
Elm_Genlist_Item_Type
Defines if the item is of any special type (has subitems or it's the index of a group),...
Definition elm_general.h:348
elm_genlist_item_update
void elm_genlist_item_update(Elm_Genlist_Item *obj)
Update all the contents of an item.
Definition elm_genlist_item_eo.legacy.c:159
elm_genlist_item_selected_set
void elm_genlist_item_selected_set(Elm_Genlist_Item *obj, Eina_Bool selected)
Set whether a given genlist item is selected or not.
Definition elm_genlist_item_eo.legacy.c:27
elm_genlist_item_item_class_update
void elm_genlist_item_item_class_update(Elm_Genlist_Item *obj, const Elm_Genlist_Item_Class *itc)
Update the item class of an item.
Definition elm_genlist_item_eo.legacy.c:171
elm_genlist_item_expanded_depth_get
int elm_genlist_item_expanded_depth_get(const Elm_Genlist_Item *obj)
Get the depth of expanded item.
Definition elm_genlist_item_eo.legacy.c:51
ELM_GENLIST_ITEM_NONE
@ ELM_GENLIST_ITEM_NONE
Simple item.
Definition elm_general.h:349
ELM_GENLIST_ITEM_TREE
@ ELM_GENLIST_ITEM_TREE
This may be expanded and have child items.
Definition elm_general.h:350
elm_icon_standard_set
Eina_Bool elm_icon_standard_set(Evas_Object *obj, const char *name)
Set the icon by icon standards names.
Definition elm_icon.c:876
elm_icon_add
Evas_Object * elm_icon_add(Evas_Object *parent)
Add a new icon object to the parent.
Definition elm_icon.c:604
elm_win_util_standard_add
Evas_Object * elm_win_util_standard_add(const char *name, const char *title)
Adds a window object with standard setup.
Definition efl_ui_win.c:9587
elm_win_resize_object_add
void elm_win_resize_object_add(Eo *obj, Evas_Object *subobj)
Add subobj as a resize object of window obj.
Definition efl_ui_win.c:9002
elm_win_autodel_set
void elm_win_autodel_set(Eo *obj, Eina_Bool autodel)
Set the window's autodel state.
Definition efl_ui_win.c:6199
evas_object_box_layout_flow_horizontal
EVAS_API void evas_object_box_layout_flow_horizontal(Evas_Box *obj, Evas_Object_Box_Data *priv, void *data)
Layout function which sets the box o to a flow horizontal box.
Definition evas_box_eo.legacy.c:159
evas_object_show
EVAS_API void evas_object_show(Evas_Object *eo_obj)
Makes the given Evas object visible.
Definition evas_object_main.c:1814
evas_object_size_hint_weight_set
EVAS_API void evas_object_size_hint_weight_set(Evas_Object *obj, double x, double y)
Sets the hints for an object's weight.
Definition evas_object_main.c:2638
evas_object_size_hint_align_set
EVAS_API void evas_object_size_hint_align_set(Evas_Object *obj, double x, double y)
Sets the hints for an object's alignment.
Definition evas_object_main.c:2650
evas_object_size_hint_aspect_set
EVAS_API void evas_object_size_hint_aspect_set(Evas_Object *obj, Evas_Aspect_Control aspect, Evas_Coord w, Evas_Coord h)
Sets the hints for an object's aspect ratio.
Definition evas_object_main.c:2581
Evas_Object
Efl_Canvas_Object Evas_Object
An Evas Object handle.
Definition Evas_Common.h:185
evas_object_resize
EVAS_API void evas_object_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
Changes the size of the given Evas object.
Definition evas_object_main.c:1236
evas_object_smart_callback_add
EVAS_API void evas_object_smart_callback_add(Evas_Object *eo_obj, const char *event, Evas_Smart_Cb func, const void *data)
Add (register) a callback function to the smart event specified by event on the smart object obj.
Definition evas_object_smart.c:1040
_Elm_Gen_Item_Class_Functions::state_get
Elm_Gen_Item_State_Get_Cb state_get
State fetching class function for genlist/gengrid item classes.
Definition elm_gen.h:101
_Elm_Gen_Item_Class_Functions::del
Elm_Gen_Item_Del_Cb del
Deletion class function for genlist/gengrid item classes.
Definition elm_gen.h:102
_Elm_Gen_Item_Class_Functions::content_get
Elm_Gen_Item_Content_Get_Cb content_get
Content fetching class function for genlist/gengrid item classes.
Definition elm_gen.h:100
_Elm_Gen_Item_Class_Functions::text_get
Elm_Gen_Item_Text_Get_Cb text_get
Text fetching class function for genlist/gengrid item classes.
Definition elm_gen.h:99
_Elm_Gen_Item_Class::func
Elm_Gen_Item_Class_Functions func
Set of callbacks.
Definition elm_gen.h:126
_Elm_Gen_Item_Class::item_style
const char * item_style
Name of the visual style to use for this item.
Definition elm_gen.h:118