/** 解除事件连接 */
int $(Unbind)( LCUI_EventBox box, int handler_id )
{
int i, n;
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
LCUI_EventHandler *handler;
if( !(node = RBTree_Search(&box->event_handler, handler_id)) ) {
return -1;
}
if( !(node = RBTree_Search(&box->event_slot, (int)(node->data))) ) {
return -2;
}
slot = (LCUI_EventSlot*)node->data;
LinkedList_Goto( &slot->handlers, 0 );
n = LinkedList_GetTotal( &slot->handlers );
for( i=0; i<n; ++i ) {
handler = (LCUI_EventHandler*)LinkedList_Get( &slot->handlers );
if( handler->id == handler_id ) {
LinkedList_Delete( &slot->handlers );
RBTree_Erase( &box->event_handler, handler_id );
return 0;
}
LinkedList_ToNext( &slot->handlers );
}
return -3;
}
/** 直接将事件发送至事件处理器进行处理 */
int $(Send)( LCUI_EventBox box, const char *name, void *data )
{
int i, n;
LCUI_Event event;
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
LCUI_EventHandler *handler;
if( !(node = RBTree_CustomSearch(&box->event_name, (const void*)name)) ) {
return -1;
}
if( !(node = RBTree_Search(&box->event_slot, node->key)) ) {
return -2;
}
slot = (LCUI_EventSlot*)node->data;
event.id = slot->id;
event.name = slot->name;
event.data = data;
event.destroy_data = NULL;
n = LinkedList_GetTotal( &slot->handlers );
LinkedList_Goto( &slot->handlers, 0 );
for( i=0; i<n; ++i ) {
handler = (LCUI_EventHandler*)LinkedList_Get( &slot->handlers );
handler->func( &event, handler->func_data );
LinkedList_ToNext( &slot->handlers );
}
return 0;
}
/** 检测事件ID是否已经存在 */
int $(IsExistEventId)( LCUI_EventBox box, int id )
{
if( RBTree_Search( &box->event_slot, id ) ) {
return 1;
}
return 0;
}
static int $($RegisterEvent)( LCUI_EventBox box, const char *event_name, int id )
{
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
/* 查找事件槽记录 */
if( node = RBTree_CustomSearch(
&box->event_name, (const void*)event_name
) ) {
return -1;
}
if( node = RBTree_Search( &box->used_evnet_id, id ) ) {
return -2;
}
/* 新建一个事件槽 */
slot = NEW_ONE(LCUI_EventSlot);
slot->name = (char*)malloc(sizeof(char)*(strlen(event_name)+1));
slot->id = id;
strcpy( slot->name, event_name );
LinkedList_Init( &slot->handlers, sizeof(LCUI_EventHandler) );
/* 添加事件槽记录 */
RBTree_Insert( &box->event_slot, slot->id, slot );
/* 添加事件名记录 */
node = RBTree_CustomInsert(
&box->event_name, (const void*)event_name, &slot->name
);
/* 结点的 key 就是事件槽的 id */
node->key = slot->id;
return 0;
}
/** 绑定指定ID的事件 */
int $(BindById)( LCUI_EventBox box, int event_id, EventCallBack func,
void *func_data, void (*destroy_data)(void*) )
{
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
LCUI_EventHandler *handler;
void *data;
node = RBTree_Search( &box->event_slot, event_id );
if( !node ) {
return -1;
}
slot = (LCUI_EventSlot*)node->data;
handler = NEW_ONE(LCUI_EventHandler);
DEBUG_MSG("eventbox: %p, handler_id: %d\n", box, box->handler_id);
handler->id = ++box->handler_id;
handler->func = func;
handler->func_data = func_data;
handler->destroy_data = destroy_data;
LinkedList_Append( &slot->handlers, handler );
/* 将int类型的值转换成void×类型的值 */
data = &slot->id;
data = *(void**)data;
RBTree_Insert( &box->event_handler, handler->id, data );
return handler->id;
}
/** 获取指定事件ID的名称 */
const char *$(GetEventName)( LCUI_EventBox box, int id )
{
LCUI_RBTreeNode *node;
if( node = RBTree_Search( &box->event_slot, id ) ) {
return (const char*)node->data;
}
return NULL;
}
/** 注册事件，指定事件名称和ID */
int $(RegisterEventWithId)( LCUI_EventBox box, const char *event_name, int id )
{
/** 如果该ID已经被使用 */
if( RBTree_Search( &box->used_evnet_id, id ) ) {
return -1;
}
RBTree_Insert( &box->used_evnet_id, id, NULL );
return $($RegisterEvent)( box, event_name, id );
}
/** 将事件投递给事件处理器，等待处理 */
int $(Post)( LCUI_EventBox box, const char *name, void *data,
void (*destroy_data)(void*) )
{
LCUI_Event event;
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
LinkedList *elist = &box->events[box->current];
if( !(node = RBTree_CustomSearch(&box->event_name, (const void*)name)) ) {
return -1;
}
if( !(node = RBTree_Search(&box->event_slot, node->key)) ) {
return -2;
}
slot = (LCUI_EventSlot*)node->data;
event.id = slot->id;
event.name =slot->name;
event.data = data;
event.destroy_data = destroy_data;
LinkedList_AddDataCopy( elist, &event );
return 0;
}
/** 绑定指定ID的事件 */
int $(BindById)( LCUI_EventBox box, int event_id, EventCallBack func,
void *func_data, void (*destroy_data)(void*) )
{
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
LCUI_EventHandler *handler;
node = RBTree_Search( &box->event_slot, event_id );
if( !node ) {
return -1;
}
slot = (LCUI_EventSlot*)node->data;
handler = NEW_ONE(LCUI_EventHandler);
handler->id = ++box->handler_id;
handler->func = func;
handler->func_data = func_data;
handler->destroy_data = destroy_data;
LinkedList_AddData( &slot->handlers, handler );
RBTree_Insert(
&box->event_handler, handler->id, (void*)(slot->id)
);
return handler->id;
}
/** 将事件投递给事件处理器，等待处理 */
int $(Post)( LCUI_EventBox box, const char *name, void *data,
void (*destroy_data)(void*) )
{
LCUI_Event *e;
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
LinkedList *elist = &box->events[box->current];
DEBUG_MSG("eventbox: %p, handler_id: %d\n", box, box->handler_id);
if( !(node = RBTree_CustomSearch(&box->event_name, (const void*)name)) ) {
return -1;
}
if( !(node = RBTree_Search(&box->event_slot, node->key)) ) {
return -2;
}
e = (LCUI_Event*)LinkedList_Alloc( elist );
slot = (LCUI_EventSlot*)node->data;
e->id = slot->id;
e->name = slot->name;
e->data = data;
e->destroy_data = destroy_data;
return 0;
}
