58 emit "epilogue:foreach"

    59 ||

    60 function foreach_unsubscribe(){

    61     for(let item of this.items){

    62         for(let widget of item) {

    63             unsubscribe.call(widget);

    64         }

    65     }

    66     this.offset = 0;

    67 }

    68 

    69 function foreach_widgets_do(new_offset, todo){

    70     this.offset = new_offset;

    71     for(let i = 0; i < this.items.length; i++) {

    72         let item = this.items[i];

    73         let orig_item_index = this.index_pool[i];

    74         let item_index = this.index_pool[i+this.item_offset];

    75         let item_index_offset = item_index - orig_item_index;

    76         for(let widget of item) {

    77             todo.call(widget, new_offset + item_index_offset);

    78         }

    79     }

    80 }

    81 

    82 function foreach_subscribe(new_offset=0){

    83     foreach_widgets_do.call(this, new_offset, subscribe);

    84 }

    85 

    86 function foreach_apply_cache() {

    87     foreach_widgets_do.call(this, this.offset, widget_apply_cache);

    88 }

    89 

    90 function foreach_onclick(opstr, evt) {

    91     new_item_offset = eval(String(this.item_offset)+opstr)

    92     if(new_item_offset + this.items.length > this.index_pool.length) {

    93         if(this.item_offset + this.items.length == this.index_pool.length)

    94             new_item_offset = 0;

    95         else

    96             new_item_offset = this.index_pool.length - this.items.length;

    97     } else if(new_item_offset < 0) {

    98         if(this.item_offset == 0)

    99             new_item_offset = this.index_pool.length - this.items.length;

   100         else

   101             new_item_offset = 0;

   102     }

   103     this.item_offset = new_item_offset;

   104     off = this.offset;

   105     foreach_unsubscribe.call(this);

   106     foreach_subscribe.call(this,off);

   107     update_subscriptions();

   108     need_cache_apply.push(this);

   109     jumps_need_update = true;

   110     requestHMIAnimation();

   111 }

   112 

   113 ||