数字输入框组件
Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/534382/1580036/NumberInputWidget.js
const createNumberInput = function () {
// 创建宿主元素
const container = document.createElement("div");
container.id = "numberInputWidget";
// 创建 shadowRoot
const shadowRoot = container.attachShadow({ mode: "open" });
shadowRoot.innerHTML = `<style>
.number-input {
display: inline-flex;
border: 1px solid #dcdfe6;
border-radius: 4px;
overflow: hidden;
}
.number-input__button {
width: 32px;
height: 32px;
background: #f5f7fa;
border: none;
outline: none;
cursor: pointer;
position: relative;
transition: background 0.3s;
}
.number-input__button:hover {
background: #e4e7ed;
}
.number-input__button:disabled {
cursor: not-allowed;
color: #c0c4cc;
background: #f5f7fa;
}
.number-input__button::before {
content: "";
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 10px;
height: 2px;
background: #606266;
}
.number-input__button--plus::after {
content: "";
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 2px;
height: 10px;
background: #606266;
}
.number-input__input {
width: 60px;
height: 32px;
border: none;
border-left: 1px solid #dcdfe6;
border-right: 1px solid #dcdfe6;
text-align: center;
outline: none;
font-size: 14px;
color: #606266;
}
.number-input__input:focus {
border-color: #409eff;
}
.number-input__input:disabled {
background: #f5f7fa;
cursor: not-allowed;
}
</style>
</head>
<body>
<div class="number-input" data-min="0" data-max="10" data-step="1" data-value="1">
<button class="number-input__button number-input__button--minus" type="button"></button>
<input type="text" class="number-input__input" value="1">
<button class="number-input__button number-input__button--plus" type="button"></button>
</div>`;
class NumberInput {
constructor(container) {
this.container = container;
this.input = container.querySelector(".number-input__input");
this.min = parseFloat(container.dataset.min) || 1;
this.max = parseFloat(container.dataset.max) || Infinity;
this.step = parseFloat(container.dataset.step) || 1;
this.value = parseFloat(GM_getValue("redirectInterval", 3)) || this.min;
this.init();
}
init() {
this.input.value = this.value;
this.updateButtonState();
// 绑定事件
this.container
.querySelector(".number-input__button--minus")
.addEventListener("click", () => this.changeValue(-this.step));
this.container
.querySelector(".number-input__button--plus")
.addEventListener("click", () => this.changeValue(this.step));
this.input.addEventListener("change", () => this.validateInput());
this.input.addEventListener("keydown", (e) => this.handleKeydown(e));
}
changeValue(delta) {
const newValue = this.value + delta;
this.value = Math.max(this.min, Math.min(this.max, newValue));
this.input.value = Number.isInteger(this.value)
? this.value
: this.value.toFixed(1);
GM_setValue("redirectInterval", this.input.value);
this.updateButtonState();
}
validateInput() {
let value = parseFloat(this.input.value);
if (isNaN(value)) {
value = this.min;
}
this.value = Math.max(this.min, Math.min(this.max, value));
this.input.value = Number.isInteger(this.value)
? this.value
: this.value.toFixed(1);
GM_setValue("redirectInterval", this.input.value);
this.updateButtonState();
}
updateButtonState() {
const minusBtn = this.container.querySelector(
".number-input__button--minus"
);
const plusBtn = this.container.querySelector(
".number-input__button--plus"
);
minusBtn.disabled = this.value <= this.min;
plusBtn.disabled = this.value >= this.max;
}
handleKeydown(e) {
if (e.key === "ArrowUp") {
e.preventDefault();
this.changeValue(this.step);
} else if (e.key === "ArrowDown") {
e.preventDefault();
this.changeValue(-this.step);
}
}
}
// 初始化所有数字输入框
shadowRoot.querySelectorAll(".number-input").forEach((container) => {
new NumberInput(container);
});
return container;
};