Lightbox_me的关闭按钮

时间:2014-08-11 01:10:29

标签: javascript jquery lightbox

我已经搜索了Lightbox_me的关闭按钮的脚本,但是我能找到的只是用于裸机灯箱的脚本。

(function ($) {

    $.fn.lightbox_me = function (options) {

        return this.each(function () {

            var
            opts = $.extend({}, $.fn.lightbox_me.defaults, options),
                $overlay = $(),
                $self = $(this),
                $iframe = $('<iframe id="foo" style="z-index: ' + (opts.zIndex + 1) + ';border: none; margin: 0; padding: 0; position: absolute; width: 100%; height: 100%; top: 0; left: 0; filter: mask();"/>');

            if (opts.showOverlay) {
                //check if there's an existing overlay, if so, make subequent ones clear
                var $currentOverlays = $(".js_lb_overlay:visible");
                if ($currentOverlays.length > 0) {
                    $overlay = $('<div class="lb_overlay_clear js_lb_overlay"/>');
                } else {
                    $overlay = $('<div class="' + opts.classPrefix + '_overlay js_lb_overlay"/>');
                }
            }

            /*----------------------------------------------------
               DOM Building
            ---------------------------------------------------- */
            $('body').append($self.hide()).append($overlay);

            /*----------------------------------------------------
               Overlay CSS stuffs
            ---------------------------------------------------- */

            // set css of the overlay
            if (opts.showOverlay) {
                setOverlayHeight(); // pulled this into a function because it is called on window resize.
                $overlay.css({
                    position: 'absolute',
                    width: '100%',
                    top: 0,
                    left: 0,
                    right: 0,
                    bottom: 0,
                    zIndex: (opts.zIndex + 2),
                    display: 'none'
                });
                if (!$overlay.hasClass('lb_overlay_clear')) {
                    $overlay.css(opts.overlayCSS);
                }
            }

            /*----------------------------------------------------
               Animate it in.
            ---------------------------------------------------- */
            //
            if (opts.showOverlay) {
                $overlay.fadeIn(opts.overlaySpeed, function () {
                    setSelfPosition();
                    $self[opts.appearEffect](opts.lightboxSpeed, function () {
                        setOverlayHeight();
                        setSelfPosition();
                        opts.onLoad()
                    });
                });
            } else {
                setSelfPosition();
                $self[opts.appearEffect](opts.lightboxSpeed, function () {
                    opts.onLoad()
                });
            }

            /*----------------------------------------------------
               Hide parent if parent specified (parentLightbox should be jquery reference to any parent lightbox)
            ---------------------------------------------------- */
            if (opts.parentLightbox) {
                opts.parentLightbox.fadeOut(200);
            }


            /*----------------------------------------------------
               Bind Events
            ---------------------------------------------------- */

            $(window).resize(setOverlayHeight)
                .resize(setSelfPosition)
                .scroll(setSelfPosition);

            $(window).bind('keyup.lightbox_me', observeKeyPress);

            if (opts.closeClick) {
                $overlay.click(function (e) {
                    closeLightbox();
                    e.preventDefault;
                });
            }
            $self.delegate(opts.closeSelector, "click", function (e) {
                closeLightbox();
                e.preventDefault();
            });
            $self.bind('close', closeLightbox);
            $self.bind('reposition', setSelfPosition);



            /*--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
              -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- */


            /*----------------------------------------------------
               Private Functions
            ---------------------------------------------------- */

            /* Remove or hide all elements */
            function closeLightbox() {
                var s = $self[0].style;
                if (opts.destroyOnClose) {
                    $self.add($overlay).remove();
                } else {
                    $self.add($overlay).hide();
                }

                //show the hidden parent lightbox
                if (opts.parentLightbox) {
                    opts.parentLightbox.fadeIn(200);
                }
                if (opts.preventScroll) {
                    $('body').css('overflow', '');
                }
                $iframe.remove();

                // clean up events.
                $self.undelegate(opts.closeSelector, "click");
                $self.unbind('close', closeLightbox);
                $self.unbind('repositon', setSelfPosition);

                $(window).unbind('resize', setOverlayHeight);
                $(window).unbind('resize', setSelfPosition);
                $(window).unbind('scroll', setSelfPosition);
                $(window).unbind('keyup.lightbox_me');
                opts.onClose();
            }


            /* Function to bind to the window to observe the escape/enter key press */
            function observeKeyPress(e) {
                if ((e.keyCode == 27 || (e.DOM_VK_ESCAPE == 27 && e.which == 0)) && opts.closeEsc) closeLightbox();
            }


            /* Set the height of the overlay
                    : if the document height is taller than the window, then set the overlay height to the document height.
                    : otherwise, just set overlay height: 100%
            */
            function setOverlayHeight() {
                if ($(window).height() < $(document).height()) {
                    $overlay.css({
                        height: $(document).height() + 'px'
                    });
                    $iframe.css({
                        height: $(document).height() + 'px'
                    });
                } else {
                    $overlay.css({
                        height: '100%'
                    });
                }
            }


            /* Set the position of the modal'd window ($self)
                    : if $self is taller than the window, then make it absolutely positioned
                    : otherwise fixed
            */
            function setSelfPosition() {
                var s = $self[0].style;

                // reset CSS so width is re-calculated for margin-left CSS
                $self.css({
                    left: '50%',
                    marginLeft: ($self.outerWidth() / 2) * -1,
                    zIndex: (opts.zIndex + 3)
                });


                /* we have to get a little fancy when dealing with height, because lightbox_me
                    is just so fancy.
                 */

                // if the height of $self is bigger than the window and self isn't already position absolute
                if (($self.height() + 80 >= $(window).height()) && ($self.css('position') != 'absolute')) {

                    // we are going to make it positioned where the user can see it, but they can still scroll
                    // so the top offset is based on the user's scroll position.
                    var topOffset = $(document).scrollTop() + 40;
                    $self.css({
                        position: 'absolute',
                        top: topOffset + 'px',
                        marginTop: 0
                    })
                } else if ($self.height() + 80 < $(window).height()) {
                    //if the height is less than the window height, then we're gonna make this thing position: fixed.
                    if (opts.centered) {
                        $self.css({
                            position: 'fixed',
                            top: '50%',
                            marginTop: ($self.outerHeight() / 2) * -1
                        })
                    } else {
                        $self.css({
                            position: 'fixed'
                        }).css(opts.modalCSS);
                    }
                    if (opts.preventScroll) {
                        $('body').css('overflow', 'hidden');
                    }
                }
            }

        });



    };

    $.fn.lightbox_me.defaults = {

        // animation
        appearEffect: "fadeIn",
        appearEase: "",
        overlaySpeed: 250,
        lightboxSpeed: 300,

        // close
        closeSelector: ".close",
        closeClick: true,
        closeEsc: true,

        // behavior
        destroyOnClose: false,
        showOverlay: true,
        parentLightbox: false,
        preventScroll: false,

        // callbacks
        onLoad: function () {},
        onClose: function () {},

        // style
        classPrefix: 'lb',
        zIndex: 999,
        centered: true,
        modalCSS: {
            top: '100px'
        },
        overlayCSS: {
            background: 'black',
            opacity: .3
        }
    }

    $('.trigger').click(function (e) {
        $('.lightbox').lightbox_me();
        e.preventDefault();
    });
})(jQuery);

This is the jsfiddle with the script for Lightbox_me.

我尝试将裸机灯箱的关键按钮合并到Lightbox_me中,但我根本不知道从哪里开始。我是否必须单独将一个关闭按钮格式化到每个灯箱div上并简单地绑定closeLightbox();?或者是否有更优雅的方式来处理仅涉及脚本?

1 个答案:

答案 0 :(得分:1)

默认情况下,脚本具有以下定义:

$.fn.lightbox_me.defaults = {

    // animation
    appearEffect: "fadeIn",
    appearEase: "",
    overlaySpeed: 250,
    lightboxSpeed: 300,

    // close
    closeSelector: ".close",
    closeClick: true,
    closeEsc: true,

    // behavior
    destroyOnClose: false,
    showOverlay: true,
    parentLightbox: false,
    preventScroll: false,

    // callbacks
    onLoad: function () {},
    onClose: function () {},

    // style
    classPrefix: 'lb',
    zIndex: 999,
    centered: true,
    modalCSS: {
        top: '100px'
    },
    overlayCSS: {
        background: 'black',
        opacity: .3
    }
}

您会在关闭部分注意到它默认使用类&#34;关闭&#34;来查找元素。

因此,如果您在灯箱内贴上该类的div,请按照您的方式设置,然后触发关闭操作。

基于脚本关闭的逻辑:

if (opts.closeClick) {
    $overlay.click(function (e) {
        closeLightbox();
        e.preventDefault;
    });
}
$self.delegate(opts.closeSelector, "click", function (e) {
    closeLightbox();
    e.preventDefault();
});

逻辑的这一部分告知lightbox_me,如果closeClick在传递给它的选项列表中为真,那么它将设置覆盖图上的点击以关闭灯箱。

它还会将当前和未来元素与opts.closeSelector中定义的值绑定,以便在单击时启动closeLightbox函数。

简单示例小提琴:http://jsfiddle.net/zn2hg7L8/1/