/** 追加子部件 */
int $(Append)( LCUI_Widget container, LCUI_Widget widget )
{
int i, n;
LCUI_Widget old_container;
LCUI_WidgetEvent e;
DEBUG_MSG("container: %p, widget: %p\n", container, widget);
if( !container || !widget || container == widget->parent ) {
return -1;
}
if( container == widget ) {
return -2;
}
if( widget->parent ) {
old_container = widget->parent;
} else {
goto remove_done;
}
/* 移除在之前的容器中的记录 */
n = LinkedList_GetTotal( &old_container->children );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &old_container->children, i );
if( LinkedList_Get(&old_container->children) == widget ) {
LinkedList_Delete( &old_container->children );
break;
}
}
/* 如果是从根级部件中移出，则触发 WET_REMOVE 事件 */
if( i < n && old_container == LCUIRootWidget ) {
e.type_name = "TopLevelWidget";
e.target = widget;
Widget_PostEvent( LCUIRootWidget, &e, (int*)WET_REMOVE );
}
n = LinkedList_GetTotal( &old_container->children_show );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &old_container->children_show, i );
if( LinkedList_Get(&old_container->children_show) == widget ) {
LinkedList_Delete( &old_container->children_show );
break;
}
}
remove_done:
widget->parent = container;
LinkedList_AddData( &container->children, widget );
LinkedList_AddData( &container->children_show, widget );
/* 如果是添加至根部件内，则触发 WET_ADD 事件 */
if( container == LCUIRootWidget ) {
int ret;
e.type_name = "TopLevelWidget";
e.target = widget;
ret = Widget_PostEvent( LCUIRootWidget, &e, (int*)WET_ADD );
DEBUG_MSG("post done, ret = %d\n", ret);
}
Widget_UpdateTaskStatus( widget );
DEBUG_MSG("tip\n");
return 0;
}
int ScrollLoading_Update( ScrollLoading ctx )
{
LCUI_Widget w;
LinkedListNode *node;
LCUI_WidgetEventRec e;
int count = 0, top, bottom;
e.type = ctx->event_id;
e.cancel_bubble = TRUE;
bottom = top = ctx->top;
bottom += ctx->container->box.padding.height;
if( !ctx->top_child ) {
node = ctx->container->children_show.head.next;
ctx->top_child = node->data;
}
if( !ctx->top_child ) {
return 0;
}
if( ctx->top_child->box.border.top > bottom ) {
node = Widget_GetNode( ctx->top_child );
ctx->top_child = NULL;
while( node ) {
w = node->data;
if( w->box.border.y < bottom ) {
ctx->top_child = w;
break;
}
node = node->prev;
}
if( !ctx->top_child ) {
return 0;
}
}
node = Widget_GetNode( ctx->top_child );
while( node ) {
w = node->data;
if( w->box.border.y > bottom ) {
break;
}
if( w->box.border.y + w->box.border.height >= top ) {
Widget_PostEvent( w, &e, NULL, NULL );
++count;
}
node = node->next;
}
return count;
}
/** 部件析构函数 */
static void $(OnDestroy)( void *arg )
{
LCUI_WidgetEvent e;
LCUI_Widget widget = (LCUI_Widget)arg;
Widget_DestroyTaskBox( widget );
LCUIEventBox_Destroy( widget->event );
widget->event = NULL;
LinkedList_Destroy( &widget->children );
LinkedList_Destroy( &widget->children_show );
DirtyRectList_Destroy( &widget->dirty_rects );
/* 如果是从根级部件中移出，则触发 WET_REMOVE 事件 */
if( widget->parent == LCUIRootWidget ) {
e.type_name = "TopLevelWidget";
e.target = widget;
Widget_PostEvent( LCUIRootWidget, &e, (int*)WET_REMOVE );
}
}
