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MediaWiki:Gadget-SelectionCounter.js:修订间差异

MediaWiki界面页面
删除的内容 添加的内容
Maintenance script留言 | 贡献
增加轮询兜底以兼容未触发 selectionchange 的情况
Maintenance script留言 | 贡献
更健壮的选区获取与事件触发
第27行: 第27行:
function getSelectionText() {
function getSelectionText() {
var selection = window.getSelection();
var selection = window.getSelection();
if (!selection || selection.isCollapsed) {
if (!selection || selection.rangeCount === 0 || selection.isCollapsed) {
return '';
return '';
}
}
return String(selection).trim();
return selection.toString();
}
}


function updateCounter() {
function updateCounter() {
rafId = null;
rafId = null;

var active = document.activeElement;
var text = getSelectionText();
if (active && (active.tagName === 'INPUT' || active.tagName === 'TEXTAREA' || active.isContentEditable)) {
if (!text) {
if (lastText !== null) {
if (lastText !== null) {
lastText = null;
lastText = null;
第44行: 第45行:
}
}


var text = getSelectionText();
var compact = text.replace(/\s+/g, '');
if (!text) {
if (!compact) {
if (lastText !== null) {
if (lastText !== null) {
lastText = null;
lastText = null;
第58行: 第59行:


lastText = text;
lastText = text;
var count = Array.from(text).length;
var count = Array.from(compact).length;
$counter.text('已选 ' + count + ' 字').show();
$counter.text('已选 ' + count + ' 字').show();
}
}
第67行: 第68行:
}
}
rafId = window.requestAnimationFrame(updateCounter);
rafId = window.requestAnimationFrame(updateCounter);
}

function scheduleUpdateDelayed() {
window.setTimeout(scheduleUpdate, 0);
}
}


第85行: 第90行:


document.addEventListener('selectionchange', scheduleUpdate);
document.addEventListener('selectionchange', scheduleUpdate);
document.addEventListener('mouseup', scheduleUpdate);
document.addEventListener('mouseup', scheduleUpdateDelayed, true);
document.addEventListener('mouseup', scheduleUpdateDelayed);
document.addEventListener('keyup', scheduleUpdate);
document.addEventListener('keyup', scheduleUpdate);
document.addEventListener('touchend', scheduleUpdate, { passive: true });
document.addEventListener('touchend', scheduleUpdateDelayed, { passive: true, capture: true });
document.addEventListener('pointerup', scheduleUpdateDelayed, true);
window.addEventListener('focus', startPolling);
window.addEventListener('focus', startPolling);
window.addEventListener('blur', stopPolling);
window.addEventListener('blur', stopPolling);