17 lines
1.1 KiB
JavaScript
17 lines
1.1 KiB
JavaScript
/** Latest-request wins. Browsing never chooses a supplier or preserves a stale selection. */
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export function createSupplierPicker(fetchPage,notify=()=>{},active=()=>true) {
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let serial=0,state={items:[],selected:null,page:1,last:1,total:0,loading:false,error:null};
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const publish=()=>{if(active())notify({...state});};
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return {
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get selected(){return state.selected;},
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async search(search='',page=1){
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const turn=++serial;state={items:[],selected:null,page,last:1,total:0,loading:true,error:null};publish();
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try{const result=await fetchPage(search,page);if(turn!==serial||!active())return;
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state={items:result.data,selected:null,page:result.current_page,last:result.last_page,total:result.total,loading:false,error:null};publish();
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}catch(error){if(turn!==serial||!active())return;state={...state,loading:false,error:error.message};publish();}
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},
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choose(id){state={...state,selected:state.items.find(s=>String(s.id)===String(id))??null};publish();},
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invalidate(){serial++;state={...state,items:[],selected:null,loading:false};publish();},
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};
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}
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