import './waves.css';
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const context = '@@wavesContext';
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function handleClick(el, binding) {
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function handle(e) {
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const customOpts = Object.assign({}, binding.value);
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const opts = Object.assign({
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ele: el, // 波纹作用元素
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type: 'hit', // hit 点击位置扩散 center中心点扩展
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color: 'rgba(0, 0, 0, 0.15)' // 波纹颜色
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},
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customOpts
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);
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const target = opts.ele;
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if (target) {
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target.style.position = 'relative';
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target.style.overflow = 'hidden';
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const rect = target.getBoundingClientRect();
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let ripple = target.querySelector('.waves-ripple');
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if (!ripple) {
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ripple = document.createElement('span');
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ripple.className = 'waves-ripple';
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ripple.style.height = ripple.style.width = Math.max(rect.width, rect.height) + 'px';
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target.appendChild(ripple);
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} else {
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ripple.className = 'waves-ripple';
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}
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switch (opts.type) {
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case 'center':
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ripple.style.top = rect.height / 2 - ripple.offsetHeight / 2 + 'px';
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ripple.style.left = rect.width / 2 - ripple.offsetWidth / 2 + 'px';
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break;
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default:
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ripple.style.top =
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(e.pageY - rect.top - ripple.offsetHeight / 2 - document.documentElement.scrollTop ||
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document.body.scrollTop) + 'px';
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ripple.style.left =
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(e.pageX - rect.left - ripple.offsetWidth / 2 - document.documentElement.scrollLeft ||
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document.body.scrollLeft) + 'px';
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}
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ripple.style.backgroundColor = opts.color;
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ripple.className = 'waves-ripple z-active';
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return false;
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}
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}
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if (!el[context]) {
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el[context] = {
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removeHandle: handle
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};
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} else {
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el[context].removeHandle = handle;
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}
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return handle;
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}
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function loopFindParentButton(el) {
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if (!el) return null;
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if (el.classList.contains('el-button')) {
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return el;
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}
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return loopFindParentButton(el.parentElement);
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}
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export default {
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mounted(textEl, binding) {
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const el = loopFindParentButton(textEl);
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el.addEventListener('click', handleClick(el, binding), false);
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},
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updated(textEl, binding) {
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const el = loopFindParentButton(textEl);
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el.removeEventListener('click', el[context].removeHandle, false);
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el.addEventListener('click', handleClick(el, binding), false);
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},
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unmounted(textEl) {
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const el = loopFindParentButton(textEl);
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el.removeEventListener('click', el[context].removeHandle, false);
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el[context] = null;
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delete el[context];
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}
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};
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