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package client;
import js.html.KeyboardEvent;
import js.html.InputElement;
class InputWithHistory {
final element:InputElement;
final maxItems:Int;
final history:Array<String>;
final onEnter:(value:String)->Bool;
var historyId = -1;
public function new(
element:InputElement, ?history:Array<String>, maxItems:Int,
onEnter:(value:String)->Bool
) {
this.element = element;
if (history != null) this.history = history;
else this.history = [];
this.maxItems = maxItems;
this.onEnter = onEnter;
element.onkeydown = onKeyDown;
}
function onKeyDown(e:KeyboardEvent) {
switch (e.keyCode) {
case 13: // Enter
if (element.value.length == 0) return;
final isAdd = onEnter(element.value);
if (isAdd) history.push(element.value);
if (history.length > maxItems) history.shift();
historyId = -1;
element.value = "";
case 38: // Up
historyId--;
if (historyId == -2) {
historyId = history.length - 1;
if (historyId == -1) return;
} else if (historyId == -1) historyId++;
element.value = history[historyId];
case 40: // Down
if (historyId == -1) return;
historyId++;
if (historyId > history.length - 1) {
historyId = -1;
element.value = "";
return;
}
element.value = history[historyId];
}
}
}
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