2 * @defgroup Index Index
4 * @image html img/widget/index/preview-00.png
5 * @image latex img/widget/index/preview-00.eps
7 * An index widget gives you an index for fast access to whichever
8 * group of other UI items one might have. It's a list of text
9 * items (usually letters, for alphabetically ordered access).
11 * Index widgets are by default hidden and just appear when the
12 * user clicks over it's reserved area in the canvas. In its
13 * default theme, it's an area one @ref Fingers "finger" wide on
14 * the right side of the index widget's container.
16 * When items on the index are selected, smart callbacks get
17 * called, so that its user can make other container objects to
18 * show a given area or child object depending on the index item
19 * selected. You'd probably be using an index together with @ref
20 * List "lists", @ref Genlist "generic lists" or @ref Gengrid
23 * Smart events one can add callbacks for are:
24 * - @c "changed" - When the selected index item changes. @c
25 * event_info is the selected item's data pointer.
26 * - @c "delay,changed" - When the selected index item changes, but
27 * after a small idling period. @c event_info is the selected
28 * item's data pointer.
29 * - @c "selected" - When the user releases a mouse button and
30 * selects an item. @c event_info is the selected item's data
32 * - @c "level,up" - when the user moves a finger from the first
33 * level to the second level
34 * - @c "level,down" - when the user moves a finger from the second
35 * level to the first level
37 * The @c "delay,changed" event is so that it'll wait a small time
38 * before actually reporting those events and, moreover, just the
39 * last event happening on those time frames will actually be
42 * Here are some examples on its usage:
43 * @li @ref index_example_01
44 * @li @ref index_example_02
53 * Add a new index widget to the given parent Elementary
56 * @param parent The parent object
57 * @return a new index widget handle or @c NULL, on errors
59 * This function inserts a new index widget on the canvas.
63 EAPI Evas_Object *elm_index_add(Evas_Object *parent);
66 * Enable or disable auto hiding feature for a given index widget.
68 * @param obj The index object
69 * @param disabled @c EINA_TRUE to disable auto hiding, @c EINA_FALSE to enable
71 * @see elm_index_autohide_disabled_get()
75 EAPI void elm_index_autohide_disabled_set(Evas_Object *obj, Eina_Bool disabled);
78 * Get whether auto hiding feature is enabled or not for a given index widget.
80 * @param obj The index object
81 * @return @c EINA_TRUE, if auto hiding is disabled, @c EINA_FALSE otherwise
83 * @see elm_index_active_set() for more details
87 EAPI Eina_Bool elm_index_autohide_disabled_get(const Evas_Object *obj);
90 * Set the items level for a given index widget.
92 * @param obj The index object.
93 * @param level @c 0 or @c 1, the currently implemented levels.
95 * @see elm_index_item_level_get()
99 EAPI void elm_index_item_level_set(Evas_Object *obj, int level);
102 * Get the items level set for a given index widget.
104 * @param obj The index object.
105 * @return @c 0 or @c 1, which are the levels @p obj might be at.
107 * @see elm_index_item_level_set() for more information
111 EAPI int elm_index_item_level_get(const Evas_Object *obj);
114 * Returns the last selected item, for a given index widget.
116 * @param obj The index object.
117 * @return The last item @b selected on @p obj (or @c NULL, on errors).
121 EAPI Elm_Object_Item *elm_index_item_selected_get(const Evas_Object *obj, int level);
124 * Append a new item on a given index widget.
126 * @param obj The index object.
127 * @param letter Letter under which the item should be indexed
128 * @param func The function to call when the item is selected.
129 * @param data The item data to set for the index's item
130 * @return A handle to the item added or @c NULL, on errors
132 * Despite the most common usage of the @p letter argument is for
133 * single char strings, one could use arbitrary strings as index
136 * @c item will be the pointer returned back on @c "changed", @c
137 * "delay,changed" and @c "selected" smart events.
141 EAPI Elm_Object_Item *elm_index_item_append(Evas_Object *obj, const char *letter, Evas_Smart_Cb func, const void *data);
144 * Prepend a new item on a given index widget.
146 * @param obj The index object.
147 * @param letter Letter under which the item should be indexed
148 * @param func The function to call when the item is selected.
149 * @param data The item data to set for the index's item
150 * @return A handle to the item added or @c NULL, on errors
152 * Despite the most common usage of the @p letter argument is for
153 * single char strings, one could use arbitrary strings as index
156 * @c item will be the pointer returned back on @c "changed", @c
157 * "delay,changed" and @c "selected" smart events.
161 EAPI Elm_Object_Item *elm_index_item_prepend(Evas_Object *obj, const char *letter, Evas_Smart_Cb func, const void *data);
164 * Insert a new item into the index object after item @p after.
166 * @param obj The index object.
167 * @param after The index item to insert after.
168 * @param letter Letter under which the item should be indexed
169 * @param func The function to call when the item is clicked.
170 * @param data The item data to set for the index's item
171 * @return A handle to the item added or @c NULL, on errors
173 * Despite the most common usage of the @p letter argument is for
174 * single char strings, one could use arbitrary strings as index
177 * @c item will be the pointer returned back on @c "changed", @c
178 * "delay,changed" and @c "selected" smart events.
180 * @note If @p relative is @c NULL this function will behave as
181 * elm_index_item_append().
185 EAPI Elm_Object_Item *elm_index_item_insert_after(Evas_Object *obj, Elm_Object_Item *after, const char *letter, Evas_Smart_Cb func, const void *data);
188 * Insert a new item into the index object before item @p before.
190 * @param obj The index object.
191 * @param before The index item to insert after.
192 * @param letter Letter under which the item should be indexed
193 * @param func The function to call when the item is clicked.
194 * @param data The item data to set for the index's item
195 * @return A handle to the item added or @c NULL, on errors
197 * Despite the most common usage of the @p letter argument is for
198 * single char strings, one could use arbitrary strings as index
201 * @c item will be the pointer returned back on @c "changed", @c
202 * "delay,changed" and @c "selected" smart events.
204 * @note If @p relative is @c NULL this function will behave as
205 * elm_index_item_prepend().
209 EAPI Elm_Object_Item *elm_index_item_insert_before(Evas_Object *obj, Elm_Object_Item *before, const char *letter, Evas_Smart_Cb func, const void *data);
212 * Insert a new item into the given index widget, using @p cmp_func
213 * function to sort items (by item handles).
215 * @param obj The index object.
216 * @param letter Letter under which the item should be indexed
217 * @param func The function to call when the item is clicked.
218 * @param data The item data to set for the index's item
219 * @param cmp_func The comparing function to be used to sort index
220 * items <b>by #index item handles</b>
221 * @param cmp_data_func A @b fallback function to be called for the
222 * sorting of index items <b>by item data</b>). It will be used
223 * when @p cmp_func returns @c 0 (equality), which means an index
224 * item with provided item data already exists. To decide which
225 * data item should be pointed to by the index item in question, @p
226 * cmp_data_func will be used. If @p cmp_data_func returns a
227 * non-negative value, the previous index item data will be
228 * replaced by the given @p item pointer. If the previous data need
229 * to be freed, it should be done by the @p cmp_data_func function,
230 * because all references to it will be lost. If this function is
231 * not provided (@c NULL is given), index items will be @b
232 * duplicated, if @p cmp_func returns @c 0.
233 * @return A handle to the item added or @c NULL, on errors
235 * Despite the most common usage of the @p letter argument is for
236 * single char strings, one could use arbitrary strings as index
239 * @c item will be the pointer returned back on @c "changed", @c
240 * "delay,changed" and @c "selected" smart events.
244 EAPI Elm_Object_Item *elm_index_item_sorted_insert(Evas_Object *obj, const char *letter, Evas_Smart_Cb func, const void *data, Eina_Compare_Cb cmp_func, Eina_Compare_Cb cmp_data_func);
247 * Find a given index widget's item, <b>using item data</b>.
249 * @param obj The index object
250 * @param data The item data pointed to by the desired index item
251 * @return The index item handle, if found, or @c NULL otherwise
255 EAPI Elm_Object_Item *elm_index_item_find(Evas_Object *obj, const void *data);
258 * Removes @b all items from a given index widget.
260 * @param obj The index object.
262 * If deletion callbacks are set, via elm_object_item_del_cb_set(),
263 * that callback function will be called for each item in @p obj.
267 EAPI void elm_index_item_clear(Evas_Object *obj);
270 * Go to a given items level on a index widget
272 * @param obj The index object
273 * @param level The index level (one of @c 0 or @c 1)
277 EAPI void elm_index_level_go(Evas_Object *obj, int level);
280 * Get the letter (string) set on a given index widget item.
282 * @param item The index item handle
283 * @return The letter string set on @p it
287 EAPI const char *elm_index_item_letter_get(const Elm_Object_Item *item);
290 * Set the indicator as to be disabled.
292 * @param obj The index object
293 * @param disabled @c EINA_TRUE to disable it, @c EINA_FALSE to enable it
295 * In Index widget, Indicator notes popup text, which shows a letter has been selecting.
297 * @see elm_index_indicator_disabled_get()
301 EAPI void elm_index_indicator_disabled_set(Evas_Object *obj, Eina_Bool disabled);
304 * Get the value of indicator's disabled status.
306 * @param obj The index object
307 * @return EINA_TRUE if the indicator is disabled.
309 * @see elm_index_indicator_disabled_set()
313 EAPI Eina_Bool elm_index_indicator_disabled_get(const Evas_Object *obj);