666 lines
15 KiB
JavaScript
666 lines
15 KiB
JavaScript
/*!
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* popupjs
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* Date: 2014-01-15
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* https://github.com/aui/popupjs
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* (c) 2009-2013 TangBin, http://www.planeArt.cn
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*
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* This is licensed under the GNU LGPL, version 2.1 or later.
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* For details, see: http://www.gnu.org/licenses/lgpl-2.1.html
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*/
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define(function (require) {
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var _count = 0;
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var _isIE6 = !('minWidth' in $('html')[0].style);
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var _isFixed = !_isIE6;
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function Popup () {
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this.destroyed = false;
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this.__popup = $('<div />')
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.attr({
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tabindex: '-1'
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})
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.css({
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display: 'none',
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position: 'absolute',
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left: 0,
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top: 0,
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bottom: 'auto',
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right: 'auto',
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margin: 0,
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outline: 0,
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border: '0 none'
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})
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.html(this.innerHTML)
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.appendTo('body');
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this.__backdrop = $('<div />');
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// 使用 HTMLElement 作为外部接口使用，而不是 jquery 对象
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// 统一的接口利于未来 Popup 移植到其他 DOM 库中
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this.node = this.__popup[0];
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this.backdrop = this.__backdrop[0];
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_count ++;
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}
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$.extend(Popup.prototype, {
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/**
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* 初始化完毕事件，在 show()、showModal() 执行
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* @name Popup.prototype.onshow
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* @event
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*/
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/**
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* 关闭事件，在 close() 执行
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* @name Popup.prototype.onclose
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* @event
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*/
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/**
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* 销毁前事件，在 remove() 前执行
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* @name Popup.prototype.onbeforeremove
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* @event
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*/
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/**
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* 销毁事件，在 remove() 执行
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* @name Popup.prototype.onremove
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* @event
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*/
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/**
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* 重置事件，在 reset() 执行
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* @name Popup.prototype.onreset
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* @event
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*/
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/**
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* 焦点事件，在 foucs() 执行
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* @name Popup.prototype.onfocus
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* @event
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*/
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/**
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* 失焦事件，在 blur() 执行
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* @name Popup.prototype.onblur
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* @event
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*/
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/** 浮层 DOM 素节点 */
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node: null,
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/** 遮罩 DOM 节点 */
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backdrop: null,
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/** 是否开启固定定位 */
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fixed: false,
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/** 判断对话框是否删除 */
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destroyed: true,
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/** 判断对话框是否显示 */
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open: false,
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/** close 返回值 */
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returnValue: '',
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/** 是否自动聚焦 */
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autofocus: true,
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/** 对齐方式 */
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align: 'bottom left',
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/** 设置遮罩背景颜色 */
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backdropBackground: '#000',
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/** 设置遮罩透明度 */
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backdropOpacity: 0.7,
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/** 内部的 HTML 字符串 */
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innerHTML: '',
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/** 类名 */
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className: 'ui-popup',
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/**
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* 显示浮层
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* @param {HTMLElement, Event} 指定位置（可选）
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*/
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show: function (anchor) {
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if (this.destroyed) {
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return this;
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}
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var that = this;
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var popup = this.__popup;
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this.__activeElement = this.__getActive();
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this.open = true;
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this.follow = anchor || this.follow;
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if (!this.__ready) {
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popup.addClass(this.className);
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if (this.modal) {
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this.__lock();
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}
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if (!popup.html()) {
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popup.html(this.innerHTML);
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}
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if (!_isIE6) {
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$(window).on('resize', this.__onresize = function () {
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that.reset();
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});
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}
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this.__ready = true;
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}
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popup
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.addClass(this.className + '-show')
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.attr('role', this.modal ? 'alertdialog' : 'dialog')
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.css('position', this.fixed ? 'fixed' : 'absolute')
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.show();
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this.__backdrop.show();
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this.reset().focus();
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this.__dispatchEvent('show');
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return this;
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},
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/** 显示模态浮层。参数参见 show() */
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showModal: function () {
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this.modal = true;
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return this.show.apply(this, arguments);
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},
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/** 关闭浮层 */
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close: function (result) {
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if (!this.destroyed && this.open) {
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if (result !== undefined) {
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this.returnValue = result;
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}
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this.__popup.hide().removeClass(this.className + '-show');
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this.__backdrop.hide();
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this.open = false;
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this.blur();
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this.__dispatchEvent('close');
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}
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return this;
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},
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/** 销毁浮层 */
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remove: function () {
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if (this.destroyed) {
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return this;
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}
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this.__dispatchEvent('beforeremove');
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if (Popup.current === this) {
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Popup.current = null;
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}
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this.__unlock();
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this.__popup.remove();
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this.__backdrop.remove();
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// 恢复焦点，照顾键盘操作的用户
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this.blur();
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if (!_isIE6) {
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$(window).off('resize', this.__onresize);
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}
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this.__dispatchEvent('remove');
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for (var i in this) {
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delete this[i];
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}
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return this;
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},
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/** 手动刷新位置 */
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reset: function () {
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var elem = this.follow;
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if (elem) {
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this.__follow(elem);
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} else {
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this.__center();
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}
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this.__dispatchEvent('reset');
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return this;
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},
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/** 让浮层获取焦点 */
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focus: function () {
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var node = this.node;
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var current = Popup.current;
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if (current && current !== this) {
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current.blur(false);
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}
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// 检查焦点是否在浮层里面
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if (!$.contains(node, this.__getActive())) {
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var autofocus = this.__popup.find('[autofocus]')[0];
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if (!this._autofocus && autofocus) {
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this._autofocus = true;
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} else {
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autofocus = node;
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}
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this.__focus(autofocus);
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}
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Popup.current = this;
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this.__popup.addClass(this.className + '-focus');
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this.__zIndex();
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this.__dispatchEvent('focus');
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return this;
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},
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/** 让浮层失去焦点。将焦点退还给之前的元素，照顾视力障碍用户 */
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blur: function () {
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var activeElement = this.__activeElement;
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var isBlur = arguments[0];
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if (isBlur !== false) {
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this.__focus(activeElement);
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}
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this._autofocus = false;
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this.__popup.removeClass(this.className + '-focus');
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this.__dispatchEvent('blur');
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return this;
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},
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/**
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* 添加事件
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* @param {String} 事件类型
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* @param {Function} 监听函数
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*/
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addEventListener: function (type, callback) {
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this.__getEventListener(type).push(callback);
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return this;
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},
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/**
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* 删除事件
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* @param {String} 事件类型
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* @param {Function} 监听函数
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*/
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removeEventListener: function (type, callback) {
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var listeners = this.__getEventListener(type);
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for (var i = 0; i < listeners.length; i ++) {
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if (callback === listeners[i]) {
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listeners.splice(i--, 1);
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}
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}
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return this;
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},
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// 获取事件缓存
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__getEventListener: function (type) {
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var listener = this.__listener;
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if (!listener) {
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listener = this.__listener = {};
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}
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if (!listener[type]) {
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listener[type] = [];
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}
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return listener[type];
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},
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// 派发事件
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__dispatchEvent: function (type) {
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var listeners = this.__getEventListener(type);
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if (this['on' + type]) {
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this['on' + type]();
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}
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for (var i = 0; i < listeners.length; i ++) {
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listeners[i].call(this);
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}
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},
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// 对元素安全聚焦
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__focus: function (elem) {
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// 防止 iframe 跨域无权限报错
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// 防止 IE 不可见元素报错
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try {
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// ie11 bug: iframe 页面点击会跳到顶部
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if (this.autofocus && !/^iframe$/i.test(elem.nodeName)) {
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elem.focus();
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}
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} catch (e) {}
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},
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// 获取当前焦点的元素
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__getActive: function () {
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try {// try: ie8~9, iframe #26
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var activeElement = document.activeElement;
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var contentDocument = activeElement.contentDocument;
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var elem = contentDocument && contentDocument.activeElement || activeElement;
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return elem;
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} catch (e) {}
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},
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// 置顶浮层
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__zIndex: function () {
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var index = Popup.zIndex ++;
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// 设置叠加高度
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this.__popup.css('zIndex', index);
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this.__backdrop.css('zIndex', index - 1);
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this.zIndex = index;
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},
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// 居中浮层
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__center: function () {
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var popup = this.__popup;
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var $window = $(window);
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var $document = $(document);
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var fixed = this.fixed;
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var dl = fixed ? 0 : $document.scrollLeft();
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var dt = fixed ? 0 : $document.scrollTop();
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var ww = $window.width();
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var wh = $window.height();
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var ow = popup.width();
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var oh = popup.height();
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var left = (ww - ow) / 2 + dl;
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var top = (wh - oh) * 382 / 1000 + dt;// 黄金比例
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var style = popup[0].style;
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style.left = Math.max(parseInt(left), dl) + 'px';
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style.top = Math.max(parseInt(top), dt) + 'px';
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},
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// 指定位置 @param {HTMLElement, Event} anchor
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__follow: function (anchor) {
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var $elem = anchor.parentNode && $(anchor);
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var popup = this.__popup;
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if (this.__followSkin) {
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popup.removeClass(this.__followSkin);
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}
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// 隐藏元素不可用
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if ($elem) {
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var o = $elem.offset();
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if (o.left * o.top < 0) {
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return this.__center();
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}
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}
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var that = this;
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var fixed = this.fixed;
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var $window = $(window);
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var $document = $(document);
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var winWidth = $window.width();
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var winHeight = $window.height();
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var docLeft = $document.scrollLeft();
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var docTop = $document.scrollTop();
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var popupWidth = popup.width();
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var popupHeight = popup.height();
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var width = $elem ? $elem.outerWidth() : 0;
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var height = $elem ? $elem.outerHeight() : 0;
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var offset = this.__offset(anchor);
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var x = offset.left;
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var y = offset.top;
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var left = fixed ? x - docLeft : x;
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var top = fixed ? y - docTop : y;
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var minLeft = fixed ? 0 : docLeft;
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var minTop = fixed ? 0 : docTop;
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var maxLeft = minLeft + winWidth - popupWidth;
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var maxTop = minTop + winHeight - popupHeight;
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var css = {};
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var align = this.align.split(' ');
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var className = this.className + '-';
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var reverse = {top: 'bottom', bottom: 'top', left: 'right', right: 'left'};
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var name = {top: 'top', bottom: 'top', left: 'left', right: 'left'};
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var temp = [{
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top: top - popupHeight,
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bottom: top + height,
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left: left - popupWidth,
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right: left + width
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}, {
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top: top,
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bottom: top - popupHeight + height,
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left: left,
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right: left - popupWidth + width
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}];
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var center = {
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left: left + width / 2 - popupWidth / 2,
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top: top + height / 2 - popupHeight / 2
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};
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var range = {
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left: [minLeft, maxLeft],
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top: [minTop, maxTop]
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};
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// 超出可视区域重新适应位置
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$.each(align, function (i, val) {
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// 超出右或下边界：使用左或者上边对齐
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if (temp[i][val] > range[name[val]][1]) {
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val = align[i] = reverse[val];
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}
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// 超出左或右边界：使用右或者下边对齐
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if (temp[i][val] < range[name[val]][0]) {
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align[i] = reverse[val];
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}
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});
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// 一个参数的情况
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if (!align[1]) {
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name[align[1]] = name[align[0]] === 'left' ? 'top' : 'left';
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temp[1][align[1]] = center[name[align[1]]];
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}
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className += align.join('-');
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that.__followSkin = className;
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if ($elem) {
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popup.addClass(className);
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}
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css[name[align[0]]] = parseInt(temp[0][align[0]]);
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css[name[align[1]]] = parseInt(temp[1][align[1]]);
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popup.css(css);
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},
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// 获取元素相对于页面的位置（包括iframe内的元素）
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// 暂时不支持两层以上的 iframe 套嵌
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__offset: function (anchor) {
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var isNode = anchor.parentNode;
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var offset = isNode ? $(anchor).offset() : {
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left: anchor.pageX,
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top: anchor.pageY
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};
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anchor = isNode ? anchor : anchor.target;
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var ownerDocument = anchor.ownerDocument;
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var defaultView = ownerDocument.defaultView || ownerDocument.parentWindow;
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if (defaultView == window) {// IE <= 8 只能使用两个等于号
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return offset;
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}
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// {Element Ifarme}
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var frameElement = defaultView.frameElement;
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var $ownerDocument = $(ownerDocument);
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var docLeft = $ownerDocument.scrollLeft();
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var docTop = $ownerDocument.scrollTop();
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var frameOffset = $(frameElement).offset();
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var frameLeft = frameOffset.left;
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var frameTop = frameOffset.top;
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return {
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left: offset.left + frameLeft - docLeft,
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top: offset.top + frameTop - docTop
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};
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},
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// 设置屏锁遮罩
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__lock: function () {
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var that = this;
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var popup = this.__popup;
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var backdrop = this.__backdrop;
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var backdropCss = {
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position: 'fixed',
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left: 0,
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top: 0,
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width: '100%',
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height: '100%',
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overflow: 'hidden',
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userSelect: 'none',
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opacity: 0,
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background: this.backdropBackground
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};
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popup.addClass(this.className + '-modal');
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// 避免遮罩不能盖住上一次的对话框
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// 如果当前对话框是上一个对话框创建，点击的那一瞬间它会增长 zIndex 值
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Popup.zIndex = Popup.zIndex + 2;
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|
this.__zIndex();
|
|
|
|
|
|
if (!_isFixed) {
|
|
$.extend(backdropCss, {
|
|
position: 'absolute',
|
|
width: $(window).width() + 'px',
|
|
height: $(document).height() + 'px'
|
|
});
|
|
}
|
|
|
|
|
|
backdrop
|
|
.css(backdropCss)
|
|
.animate({opacity: this.backdropOpacity}, 150)
|
|
.insertAfter(popup)
|
|
// 锁住模态对话框的 tab 简单办法
|
|
// 甚至可以避免焦点落入对话框外的 iframe 中
|
|
.attr({tabindex: '0'})
|
|
.on('focus', function () {
|
|
that.focus();
|
|
});
|
|
|
|
},
|
|
|
|
|
|
// 卸载屏锁遮罩
|
|
__unlock: function () {
|
|
|
|
if (this.modal) {
|
|
this.__popup.removeClass(this.className + '-modal');
|
|
this.__backdrop.remove();
|
|
delete this.modal;
|
|
}
|
|
}
|
|
|
|
});
|
|
|
|
|
|
/** 当前叠加高度 */
|
|
Popup.zIndex = 1024;
|
|
|
|
|
|
/** 顶层浮层的实例 */
|
|
Popup.current = null;
|
|
|
|
|
|
return Popup;
|
|
|
|
}); |