src/lib/elm_autocompleteview.c

   1 #include <Elementary.h>\r
   2 #include "elm_priv.h"\r
   3 \r
   4 /**\r
   5  * @defgroup Autocompleteview Autocompleteview\r
   6  * @ingroup Elementary\r
   7  *\r
   8  * This widget show's the completed strings in a dropdown list \r
   9  * based on the initial few characters entered by the user.\r
  10  *\r
  11  */\r
  12 \r
  13 typedef struct _Widget_Data Widget_Data;\r
  14 \r
  15 struct _Widget_Data\r
  16 {\r
  17         Evas_Object *editfield;\r
  18         Evas_Object *hover;\r
  19         Evas_Object *layout;\r
  20         Evas_Object *list;\r
  21         Evas_Object *entry;\r
  22         Eina_List *data_list;\r
  23         Eina_Bool text_set : 1;\r
  24         elmautocompleteview_matchfunction func;\r
  25         void *data;\r
  26         int threshold;\r
  27 };\r
  28 \r
  29 static void _editfield_clicked_cb(void *data, Evas_Object *obj, void *event_info)\r
  30 {\r
  31                 evas_object_smart_callback_call(data, "clicked", NULL);\r
  32 }\r
  33 \r
  34 static void _entry_changed_cb(void *data, Evas_Object *obj, void *event_info)\r
  35 {\r
  36         Widget_Data *wd = elm_widget_data_get(data);\r
  37         char *text=NULL;\r
  38         int textlen=0;\r
  39         char *real=NULL,*res=NULL;\r
  40         Eina_List *l;\r
  41         Eina_Bool textfound=EINA_FALSE;\r
  42         if(!wd) return;\r
  43         if (elm_widget_disabled_get(data)) return;\r
  44         if(wd->text_set)\r
  45                 {\r
  46                         evas_object_hide(wd->hover);\r
  47                         wd->text_set = EINA_FALSE;\r
  48                         return;\r
  49                 }\r
  50         text = elm_entry_entry_get(obj);\r
  51         if(text == NULL)\r
  52                 return; \r
  53         textlen  = strlen(text);\r
  54         if(textlen <wd->threshold)\r
  55         {\r
  56                 evas_object_hide(wd->hover);\r
  57                 return;\r
  58         }               \r
  59         evas_object_hide(wd->hover);\r
  60         if(wd->func)\r
  61                 {\r
  62                         textfound = wd->func(data,text,wd->list,wd->data);\r
  63                 }\r
  64         else if(wd->data_list) \r
  65                 {\r
  66                         elm_list_clear(wd->list);\r
  67                         EINA_LIST_FOREACH(wd->data_list, l, real) \r
  68                         {\r
  69                                 res  = strcasestr(real,text);\r
  70                                 if(res)\r
  71                                 {\r
  72                                         elm_list_item_append(wd->list, real, NULL, NULL, \r
  73                                                                                                 NULL, NULL);\r
  74                                         textfound=EINA_TRUE;\r
  75                                 }\r
  76                         }\r
  77                 }\r
  78         else\r
  79                 return;\r
  80         if(textfound)\r
  81                 {\r
  82                         elm_list_go(wd->list);          \r
  83                         evas_object_show(wd->hover);\r
  84                 }\r
  85         \r
  86 }\r
  87 \r
  88 static void\r
  89 _del_pre_hook(Evas_Object *obj)\r
  90 {\r
  91         Widget_Data *wd = elm_widget_data_get(obj);\r
  92         if(wd->hover)\r
  93                 evas_object_del(wd->hover);\r
  94 }\r
  95 \r
  96 \r
  97 static void\r
  98 _del_hook(Evas_Object *obj)\r
  99 {\r
 100         Widget_Data *wd = elm_widget_data_get(obj);\r
 101         free(wd);\r
 102 }\r
 103 \r
 104 \r
 105 static void\r
 106 _sizing_eval(Evas_Object *obj)\r
 107 {\r
 108    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;\r
 109 \r
 110    evas_object_size_hint_min_set(obj, minw, minh);\r
 111    evas_object_size_hint_max_set(obj, maxw, maxh);\r
 112 }\r
 113 \r
 114 \r
 115 static void\r
 116 _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info)\r
 117 {\r
 118    _sizing_eval(data);\r
 119 }\r
 120 \r
 121 static void\r
 122 _hover_clicked(void *data, Evas_Object *obj, void *event_info)\r
 123 {\r
 124    printf("\n\ncurrently nothin to be done\n");\r
 125 }\r
 126 \r
 127 static void _list_click( void *data, Evas_Object *obj, void *event_info )\r
 128 {\r
 129         Elm_List_Item *it = (Elm_List_Item *) elm_list_selected_item_get(obj);\r
 130         Widget_Data *wd = elm_widget_data_get(data);\r
 131         if((it==NULL)||(wd==NULL))\r
 132                 return;\r
 133         const char *text = elm_list_item_label_get(it);\r
 134         evas_object_smart_callback_call((Evas_Object *)data, "selected", (void *)text);\r
 135         if(wd->data_list)\r
 136         {\r
 137                 if(text!=NULL)\r
 138                         {\r
 139                                 elm_entry_entry_set(wd->entry, text);\r
 140                                 elm_entry_cursor_end_set(wd->entry);\r
 141                                 wd->text_set =  EINA_TRUE;\r
 142                         }\r
 143         }\r
 144 }\r
 145 \r
 146 static int\r
 147 _eina_cmp_str(const char *a, const char *b)\r
 148 {\r
 149                 return strcasecmp(a,b);\r
 150 }\r
 151 \r
 152 \r
 153 /**\r
 154  * Add a new Autocompleteview object\r
 155  *\r
 156  * @param parent The parent object\r
 157  * @return The new object or NULL if it cannot be created\r
 158  *\r
 159  * @ingroup Autocompleteview\r
 160  */\r
 161 EAPI Evas_Object *\r
 162 elm_autocompleteview_add(Evas_Object *parent)\r
 163 {\r
 164    Evas_Object *obj;\r
 165    Evas *e;\r
 166    Widget_Data *wd;\r
 167 \r
 168    wd = ELM_NEW(Widget_Data);\r
 169    e = evas_object_evas_get(parent);\r
 170    obj = elm_widget_add(e);\r
 171    elm_widget_type_set(obj, "autocompleteview");\r
 172    elm_widget_sub_object_add(parent, obj);\r
 173    elm_widget_data_set(obj, wd);\r
 174    elm_widget_del_pre_hook_set(obj, _del_pre_hook);\r
 175    elm_widget_del_hook_set(obj, _del_hook);\r
 176 \r
 177         wd->editfield = elm_editfield_add(parent);\r
 178         elm_widget_resize_object_set(obj, wd->editfield);\r
 179         elm_editfield_entry_single_line_set(wd->editfield, EINA_TRUE);\r
 180         evas_object_size_hint_weight_set(wd->editfield, 0, EVAS_HINT_EXPAND);\r
 181         evas_object_size_hint_align_set(wd->editfield, 0, EVAS_HINT_FILL);\r
 182         evas_object_event_callback_add(wd->editfield,\r
 183                                                                                                                                         EVAS_CALLBACK_CHANGED_SIZE_HINTS,\r
 184                                                                                                                                         _changed_size_hints, obj);\r
 185         wd->threshold = 1;\r
 186         wd->entry = elm_editfield_entry_get(wd->editfield);\r
 187 \r
 188         evas_object_smart_callback_add(wd->editfield, "clicked", _editfield_clicked_cb, obj);\r
 189         evas_object_smart_callback_add(wd->entry, "changed", _entry_changed_cb, obj);\r
 190 \r
 191         wd->hover = elm_hover_add(obj);\r
 192         elm_hover_parent_set(wd->hover, parent);\r
 193         elm_hover_target_set(wd->hover, wd->editfield);\r
 194 \r
 195         wd->layout = elm_layout_add(wd->hover);\r
 196         elm_layout_theme_set(wd->layout,"autocompleteview","base","default");\r
 197         wd->list = elm_list_add(wd->layout);\r
 198         evas_object_size_hint_weight_set(wd->list, EVAS_HINT_EXPAND, 0.0);\r
 199         evas_object_size_hint_align_set(wd->list, EVAS_HINT_FILL, EVAS_HINT_FILL);\r
 200         elm_list_horizontal_mode_set(wd->list, ELM_LIST_COMPRESS);\r
 201         elm_object_style_set(wd->list,"autocompleteview");\r
 202         elm_list_go(wd->list);\r
 203         evas_object_smart_callback_add(wd->list, "selected", _list_click, obj);\r
 204         elm_layout_content_set( wd->layout, "elm.swallow.content", wd->list );\r
 205         elm_hover_content_set(wd->hover,\r
 206                                                                                                         elm_hover_best_content_location_get(wd->hover,\r
 207                                                                  ELM_HOVER_AXIS_VERTICAL),\r
 208                                                                                                         wd->layout);\r
 209         evas_object_smart_callback_add(wd->hover, "clicked", _hover_clicked, obj);\r
 210         \r
 211    _sizing_eval(obj);\r
 212    return obj;\r
 213 }\r
 214 \r
 215 \r
 216 /**\r
 217  * This Get's the entry object of Autocompleteview object.\r
 218  *\r
 219  * @param obj The Autocompleteview object.\r
 220  * @return the entry object.\r
 221  *\r
 222  * @ingroup Autocompleteview\r
 223  */\r
 224 EAPI Evas_Object *\r
 225 elm_autocompleteview_entry_get(Evas_Object *obj)\r
 226 {\r
 227         Widget_Data *wd = elm_widget_data_get(obj);\r
 228 \r
 229         if(!wd)\r
 230                 return NULL;\r
 231         \r
 232         return wd->entry;\r
 233 }\r
 234 \r
 235 /**\r
 236  * This Get's the editfield object of the Autocompleteview object.\r
 237  *\r
 238  * @param obj The Autocompleteview object.\r
 239  * @return The Editfield object.\r
 240  *\r
 241  * @ingroup Autocompleteview\r
 242  */\r
 243 EAPI Evas_Object *\r
 244 elm_autocompleteview_editfield_get(Evas_Object *obj)\r
 245 {\r
 246         Widget_Data *wd = elm_widget_data_get(obj);\r
 247 \r
 248         if(!wd)\r
 249                 return NULL;\r
 250         \r
 251         return wd->editfield;\r
 252 }\r
 253 \r
 254 \r
 255 /**\r
 256  * This Specifies the minimum number of characters the user has to type in the editfield \r
 257  * before the drop down list is shown.When threshold is less than or equals 0, a threshold of 1 is applied by default.\r
 258  *\r
 259  * @param obj The Autocompleteview object\r
 260  * @param threshold the number of characters to type before the drop down is shown\r
 261  *\r
 262  * @ingroup Autocompleteview\r
 263  */\r
 264 EAPI void\r
 265 elm_autocompleteview_threshold_set(Evas_Object *obj, int threshold)\r
 266 {\r
 267         Widget_Data *wd = elm_widget_data_get(obj);\r
 268 \r
 269         if(!wd)\r
 270                 return;\r
 271         if(threshold <=0)\r
 272                 {\r
 273                         wd->threshold = 1;\r
 274                 }\r
 275         else\r
 276                 {\r
 277                         wd->threshold = threshold;\r
 278                 }\r
 279 }\r
 280 \r
 281 \r
 282 /**\r
 283  * This Returns the number of characters the user must type before the drop down list is shown.\r
 284  *\r
 285  * @param obj The Autocompleteview object.\r
 286  * @return The threshold value.\r
 287  *\r
 288  * @ingroup Autocompleteview\r
 289  */\r
 290 EAPI int\r
 291 elm_autocompleteview_threshold_get(Evas_Object *obj)\r
 292 {\r
 293         Widget_Data *wd = elm_widget_data_get(obj);\r
 294 \r
 295         if(!wd)\r
 296                 return -1;\r
 297         return wd->threshold;\r
 298 \r
 299 }\r
 300 \r
 301 \r
 302 /**\r
 303  * This Specifies the list of strings which has to be searched to get the list of completion strings.\r
 304  *\r
 305  * @param obj The Autocompleteview object\r
 306  * @param data_list the list of static strings, which has to be searched to get the completion strings.\r
 307  *\r
 308  * @ingroup Autocompleteview\r
 309  */\r
 310 EAPI void\r
 311 elm_autocompleteview_data_set(Evas_Object *obj, Eina_List *data_list)\r
 312 {\r
 313         Widget_Data *wd = elm_widget_data_get(obj);\r
 314 \r
 315         if(!wd)\r
 316                 return;\r
 317 \r
 318         wd->data_list = data_list;\r
 319 \r
 320         /*storing sorted list*/\r
 321         wd->data_list = eina_list_sort(wd->data_list, eina_list_count(wd->data_list), EINA_COMPARE_CB(_eina_cmp_str));\r
 322 }\r
 323 \r
 324 \r
 325 /**\r
 326  * This Registers the callback function that would be called whenever text is entered in to the entry.\r
 327  *\r
 328  * @param obj The Autocompleteview object\r
 329  * @param elmautocompleteview_matchfunction completion function which list's the completion strings.\r
 330  * @param data userdata that would be passed whenever the callback function is called.\r
 331  *\r
 332  * @ingroup Autocompleteview\r
 333  */\r
 334 EAPI void\r
 335 elm_autocompleteview_match_func_set(Evas_Object *obj, elmautocompleteview_matchfunction func,void *data)\r
 336 {\r
 337         Widget_Data *wd = elm_widget_data_get(obj);\r
 338 \r
 339         if(!wd)\r
 340                 return;\r
 341 \r
 342         wd->func = func;\r
 343         wd->data = data;\r
 344 }\r
 345 \r
 346 /**\r
 347  * This updates the text in to autocomplete view.\r
 348  *\r
 349  * @param obj The Autocompleteview object\r
 350  * @param text the text to be updated in to the entry of autocompleteview.\r
 351  *\r
 352  * @ingroup Autocompleteview\r
 353  */\r
 354 EAPI void\r
 355 elm_autocompleteview_text_update(Evas_Object *obj, char *text)\r
 356 {\r
 357         Widget_Data *wd = elm_widget_data_get(obj);\r
 358 \r
 359         if(!wd)\r
 360                 return;\r
 361 \r
 362         if(text!=NULL)\r
 363         {\r
 364                 elm_entry_entry_set(wd->entry, text);\r
 365                 elm_entry_cursor_end_set(wd->entry);\r
 366                 wd->text_set =  EINA_TRUE;\r
 367         }\r
 368         \r
 369         \r
 370 }\r