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Improve and cleanup ConditionalElementHandler

This commit is contained in:
Lukáš Kucharczyk 2023-11-14 21:09:43 +01:00
parent 410f20acea
commit d64ad125ff
2 changed files with 79 additions and 45 deletions
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35
games/static/js/add_purchase.js
View File

@ -1,4 +1,9 @@
import { syncSelectInputUntilChanged, getEl, conditionalElementHandler } from "./utils.js";
import {
syncSelectInputUntilChanged,
getEl,
disableElementsWhenTrue,
disableElementsWhenFalse,
} from "./utils.js";
let syncData = [
{
@ -11,21 +16,15 @@ let syncData = [
syncSelectInputUntilChanged(syncData, "form");
let myConfig = [
() => {
return getEl("#id_type").value == "game";
},
["#id_name", "#id_related_purchase"],
(el) => {
el.disabled = "disabled";
},
(el) => {
el.disabled = "";
}
]
document.DOMContentLoaded = conditionalElementHandler(...myConfig)
getEl("#id_type").onchange = () => {
conditionalElementHandler(...myConfig)
function setupElementHandlers() {
disableElementsWhenTrue("#id_type", "game", [
"#id_name",
"#id_related_purchase",
]);
disableElementsWhenFalse("#id_type", "game", ["#id_date_finished"]);
}
document.addEventListener("DOMContentLoaded", setupElementHandlers);
getEl("#id_type").onchange = () => {
setupElementHandlers();
};

89
games/static/js/utils.js
View File

@ -99,37 +99,72 @@ function getEl(selector) {
return document.getElementsByClassName(selector)
}
else {
return document.getElementsByName(selector)
return document.getElementsByTagName(selector)
}
}
/**
* @description Does something to elements when something happens.
* @param {() => boolean} condition The condition that is being tested.
* @param {string[]} targetElements
* @param {(elementName: HTMLElement) => void} callbackfn1 Called when the condition matches.
* @param {(elementName: HTMLElement) => void} callbackfn2 Called when the condition doesn't match.
* @description Applies different behaviors to elements based on multiple conditional configurations.
* Each configuration is an array containing a condition function, an array of target element selectors,
* and two callback functions for handling matched and unmatched conditions.
* @param {...Array} configs Each configuration is an array of the form:
* - 0: {function(): boolean} condition - Function that returns true or false based on a condition.
* - 1: {string[]} targetElements - Array of CSS selectors for target elements.
* - 2: {function(HTMLElement): void} callbackfn1 - Function to execute when condition is true.
* - 3: {function(HTMLElement): void} callbackfn2 - Function to execute when condition is false.
*/
function conditionalElementHandler(condition, targetElements, callbackfn1, callbackfn2) {
if (condition()) {
targetElements.forEach((elementName) => {
let el = getEl(elementName);
if (el === null) {
console.error("Element ${elementName} doesn't exist.");
} else {
callbackfn1(el);
}
});
} else {
targetElements.forEach((elementName) => {
let el = getEl(elementName);
if (el === null) {
console.error("Element ${elementName} doesn't exist.");
} else {
callbackfn2(el);
}
});
}
function conditionalElementHandler(...configs) {
configs.forEach(([condition, targetElements, callbackfn1, callbackfn2]) => {
if (condition()) {
targetElements.forEach(elementName => {
let el = getEl(elementName);
if (el === null) {
console.error(`Element ${elementName} doesn't exist.`);
} else {
callbackfn1(el);
}
});
} else {
targetElements.forEach(elementName => {
let el = getEl(elementName);
if (el === null) {
console.error(`Element ${elementName} doesn't exist.`);
} else {
callbackfn2(el);
}
});
}
});
}
export { toISOUTCString, syncSelectInputUntilChanged, getEl, conditionalElementHandler };
function disableElementsWhenFalse(targetSelect, targetValue, elementList) {
return conditionalElementHandler([
() => {
return getEl(targetSelect).value != targetValue;
},
elementList,
(el) => {
el.disabled = "disabled";
},
(el) => {
el.disabled = "";
},
]);
}
function disableElementsWhenTrue(targetSelect, targetValue, elementList) {
return conditionalElementHandler([
() => {
return getEl(targetSelect).value == targetValue;
},
elementList,
(el) => {
el.disabled = "disabled";
},
(el) => {
el.disabled = "";
},
]);
}
export { toISOUTCString, syncSelectInputUntilChanged, getEl, conditionalElementHandler, disableElementsWhenFalse, disableElementsWhenTrue, getValueFromProperty };