www.gusucode.com > Piwik 网站流量统计系统 v2.9.1PHP源码程序 > Piwik 网站流量统计系统 v2.9.1/How to install Piwik.html/piwik/plugins/Overlay/client/followingpages.js
var Piwik_Overlay_FollowingPages = (function () {
/** jQuery */
var $ = jQuery;
/** Info about the following pages */
var followingPages = [];
/** List of excluded get parameters */
var excludedParams = [];
/** Index of the links on the page */
var linksOnPage = {};
/** Reference to create element function */
var c;
/** Load the following pages */
function load(callback) {
// normalize current location
var location = window.location.href;
location = Piwik_Overlay_UrlNormalizer.normalize(location);
location = (("https:" == document.location.protocol) ? 'https' : 'http') + '://' + location;
var excludedParamsLoaded = false;
var followingPagesLoaded = false;
// load excluded params
Piwik_Overlay_Client.api('getExcludedQueryParameters', function (data) {
for (var i = 0; i < data.length; i++) {
if (typeof data[i] == 'object') {
data[i] = data[i][0];
}
}
excludedParams = data;
excludedParamsLoaded = true;
if (followingPagesLoaded) {
callback();
}
});
// load following pages
Piwik_Overlay_Client.api('getFollowingPages', function (data) {
followingPages = data;
processFollowingPages();
followingPagesLoaded = true;
if (excludedParamsLoaded) {
callback();
}
}, 'url=' + encodeURIComponent(location));
}
/** Normalize the URLs of following pages and aggregate some stats */
function processFollowingPages() {
var totalClicks = 0;
for (var i = 0; i < followingPages.length; i++) {
var page = followingPages[i];
// though the following pages are returned without the prefix, downloads
// and outlinks still have it.
page.label = Piwik_Overlay_UrlNormalizer.removeUrlPrefix(page.label);
totalClicks += followingPages[i].referrals;
}
for (i = 0; i < followingPages.length; i++) {
followingPages[i].clickRate = followingPages[i].referrals / totalClicks * 100;
}
}
/**
* Build an index of links on the page.
* This function is passed to $('a').each()
*/
var processLinkDelta = false;
function processLink() {
var a = $(this);
a[0].piwikDiscovered = true;
var href = a.attr('href');
href = Piwik_Overlay_UrlNormalizer.normalize(href);
if (href) {
if (typeof linksOnPage[href] == 'undefined') {
linksOnPage[href] = [a];
}
else {
linksOnPage[href].push(a);
}
}
if (href && processLinkDelta !== false) {
if (typeof processLinkDelta[href] == 'undefined') {
processLinkDelta[href] = [a];
}
else {
processLinkDelta[href].push(a);
}
}
}
var repositionTimeout = false;
var resizeTimeout = false;
function build(callback) {
// build an index of all links on the page
$('a').each(processLink);
// add tags to known following pages
createLinkTags(linksOnPage);
// position the tags
positionLinkTags();
callback();
// check on a regular basis whether new links have appeared.
// we use a timeout instead of an interval to make sure one call is done before
// the next one is triggered
var repositionAfterTimeout;
repositionAfterTimeout = function () {
repositionTimeout = window.setTimeout(function () {
findNewLinks();
positionLinkTags(repositionAfterTimeout);
}, 1800);
};
repositionAfterTimeout();
// reposition link tags on window resize
$(window).resize(function () {
if (repositionTimeout) {
window.clearTimeout(repositionTimeout);
}
if (resizeTimeout) {
window.clearTimeout(resizeTimeout);
}
resizeTimeout = window.setTimeout(function () {
positionLinkTags();
repositionAfterTimeout();
}, 70);
});
}
/** Create a batch of link tags */
function createLinkTags(links) {
var body = $('body');
for (var i = 0; i < followingPages.length; i++) {
var url = followingPages[i].label;
if (typeof links[url] != 'undefined') {
for (var j = 0; j < links[url].length; j++) {
createLinkTag(links[url][j], url, followingPages[i], body);
}
}
}
}
/** Create the link tag element */
function createLinkTag(linkTag, linkUrl, data, body) {
if (typeof linkTag[0].piwikTagElement != 'undefined' && linkTag[0].piwikTagElement !== null) {
// this link tag already has a tag element. happens in rare cases.
return;
}
linkTag[0].piwikTagElement = true;
var rate = data.clickRate;
if (rate < 10) {
rate = Math.round(rate * 10) / 10;
} else {
rate = Math.round(rate);
}
var span = c('span').html(rate + '%');
var tagElement = c('div', 'LinkTag').append(span).hide();
body.prepend(tagElement);
linkTag.add(tagElement).hover(function () {
highlightLink(linkTag, linkUrl, data);
}, function () {
unHighlightLink(linkTag, linkUrl);
});
// attach the tag element to the link element. we can't use .data() because jquery
// would remove it when removing the link from the dom. but we still need to find
// the tag element to remove it as well.
linkTag[0].piwikTagElement = tagElement;
}
/** Position the link tags next to the links */
function positionLinkTags(callback) {
var url, linkTag, tagElement, offset, top, left, isRight, hasOneChild, inlineChild;
var tagWidth = 36, tagHeight = 21;
var tagsToRemove = [];
for (var i = 0; i < followingPages.length; i++) {
url = followingPages[i].label;
if (typeof linksOnPage[url] != 'undefined') {
for (var j = 0; j < linksOnPage[url].length; j++) {
linkTag = linksOnPage[url][j];
tagElement = linkTag[0].piwikTagElement;
if (linkTag.closest('html').length == 0 || !tagElement) {
// the link has been removed from the dom
if (tagElement) {
tagElement.hide();
}
// mark for deletion. don't delete it now because we
// are iterating of the array it's in. it will be deleted
// below this for loop.
tagsToRemove.push({
index1: url,
index2: j
});
continue;
}
hasOneChild = checkHasOneChild(linkTag);
inlineChild = false;
if (hasOneChild && linkTag.css('display') != 'block') {
inlineChild = linkTag.children().eq(0);
}
if (getVisibility(linkTag) == 'hidden' || (
// in case of hasOneChild: jquery always returns linkTag.is(':visible')=false
!linkTag.is(':visible') && !(hasOneChild && inlineChild && inlineChild.is(':visible'))
)) {
// link is not visible
tagElement.hide();
continue;
}
tagElement.attr('class', 'PIS_LinkTag'); // reset class
if (tagElement[0].piwikHighlighted) {
tagElement.addClass('PIS_Highlighted');
}
// see comment in highlightLink()
if (hasOneChild && linkTag.find('> img').size() == 1) {
offset = linkTag.find('> img').offset();
if (offset.left == 0 && offset.top == 0) {
offset = linkTag.offset();
}
} else if (inlineChild !== false) {
offset = inlineChild.offset();
} else {
offset = linkTag.offset();
}
top = offset.top - tagHeight + 6;
left = offset.left - tagWidth + 10;
if (isRight = (left < 2)) {
tagElement.addClass('PIS_Right');
left = offset.left + linkTag.outerWidth() - 10;
}
if (top < 2) {
tagElement.addClass(isRight ? 'PIS_BottomRight' : 'PIS_Bottom');
top = offset.top + linkTag.outerHeight() - 6;
}
tagElement.css({
top: top + 'px',
left: left + 'px'
}).show();
}
}
}
// walk tagsToRemove from back to front because it contains the indexes in ascending
// order. removing something from the front will impact the indexes that come after-
// wards. this can be avoided by starting in the back.
for (var k = tagsToRemove.length - 1; k >= 0; k--) {
var tagToRemove = tagsToRemove[k];
linkTag = linksOnPage[tagToRemove.index1][tagToRemove.index2];
// remove the tag element from the dom
if (linkTag && linkTag[0] && linkTag[0].piwikTagElement) {
tagElement = linkTag[0].piwikTagElement;
if (tagElement[0].piwikHighlighted) {
unHighlightLink(linkTag, tagToRemove.index1);
}
tagElement.remove();
linkTag[0].piwikTagElement = null;
}
// remove the link from the index
linksOnPage[tagToRemove.index1].splice(tagToRemove.index2, 1);
if (linksOnPage[tagToRemove.index1].length == 0) {
delete linksOnPage[tagToRemove.index1];
}
}
if (typeof callback == 'function') {
callback();
}
}
/** Get the visibility of an element */
function getVisibility(el) {
var visibility = el.css('visibility');
if (visibility == 'inherit') {
el = el.parent();
if (el.size() > 0) {
return getVisibility(el);
}
}
return visibility;
}
/**
* Find out whether a link has only one child. Using .children().size() == 1 doesn't work
* because it doesn't take additional text nodes into account.
*/
function checkHasOneChild(linkTag) {
var hasOneChild = (linkTag.children().size() == 1);
if (hasOneChild) {
// if the element contains one tag and some text, hasOneChild is set incorrectly
var contents = linkTag.contents();
if (contents.size() > 1) {
// find non-empty text nodes
contents = contents.filter(function () {
return this.nodeType == 3 && // text node
$.trim(this.data).length > 0; // contains more than whitespaces
});
if (contents.size() > 0) {
hasOneChild = false;
}
}
}
return hasOneChild;
}
/** Check whether new links have been added to the dom */
function findNewLinks() {
var newLinks = $('a').filter(function () {
return typeof this.piwikDiscovered == 'undefined' || this.piwikDiscovered === null;
});
if (newLinks.size() == 0) {
return;
}
processLinkDelta = {};
newLinks.each(processLink);
createLinkTags(processLinkDelta);
processLinkDelta = false;
}
/** Dom elements used for drawing a box around the link */
var highlightElements = [];
/** Highlight a link on hover */
function highlightLink(linkTag, linkUrl, data) {
if (highlightElements.length == 0) {
highlightElements.push(c('div', 'LinkHighlightBoxTop'));
highlightElements.push(c('div', 'LinkHighlightBoxRight'));
highlightElements.push(c('div', 'LinkHighlightBoxLeft'));
highlightElements.push(c('div', 'LinkHighlightBoxText'));
var body = $('body');
for (var i = 0; i < highlightElements.length; i++) {
body.prepend(highlightElements[i].css({display: 'none'}));
}
}
var width = linkTag.outerWidth();
var offset, height;
var hasOneChild = checkHasOneChild(linkTag);
if (hasOneChild && linkTag.find('img').size() == 1) {
// if the <a> tag contains only an <img>, the offset and height methods don't work properly.
// as a result, the box around the image link would be wrong. we use the image to derive
// the offset and height instead of the link to get correct values.
var img = linkTag.find('img');
offset = img.offset();
height = img.outerHeight();
}
if (hasOneChild && linkTag.css('display') != 'block') {
// if the <a> tag is not displayed as block and has only one child, using the child to
// derive the offset and dimensions is more robust.
var child = linkTag.children().eq(0);
offset = child.offset();
height = child.outerHeight();
width = child.outerWidth();
} else {
offset = linkTag.offset();
height = linkTag.outerHeight();
}
var numLinks = linksOnPage[linkUrl].length;
putBoxAroundLink(offset, width, height, numLinks, data.referrals);
// highlight tags
for (var j = 0; j < numLinks; j++) {
var tag = linksOnPage[linkUrl][j][0].piwikTagElement;
tag.addClass('PIS_Highlighted');
tag[0].piwikHighlighted = true;
}
// Sometimes it fails to remove the notification when the hovered element is removed.
// To make sure we don't display more than one location at a time, we hide all before showing the new one.
Piwik_Overlay_Client.hideNotifications('LinkLocation');
// we don't use .data() because jquery would remove the callback when the link tag is removed
linkTag[0].piwikHideNotification = Piwik_Overlay_Client.notification(
Piwik_Overlay_Translations.get('link') + ': ' + linkUrl, 'LinkLocation');
}
function putBoxAroundLink(offset, width, height, numLinks, numReferrals) {
var borderWidth = 2;
var padding = 4; // the distance between the link and the border
// top border
highlightElements[0]
.width(width + 2 * padding)
.css({
top: offset.top - borderWidth - padding,
left: offset.left - padding
}).show();
// right border
highlightElements[1]
.height(height + 2 * borderWidth + 2 * padding)
.css({
top: offset.top - borderWidth - padding,
left: offset.left + width + padding
}).show();
// left border
highlightElements[2]
.height(height + 2 * borderWidth + 2 * padding)
.css({
top: offset.top - borderWidth - padding,
left: offset.left - borderWidth - padding
}).show();
// bottom box text
var text;
if (numLinks > 1) {
text = Piwik_Overlay_Translations.get('clicksFromXLinks')
.replace(/%1\$s/, numReferrals)
.replace(/%2\$s/, numLinks);
} else if (numReferrals == 1) {
text = Piwik_Overlay_Translations.get('oneClick');
} else {
text = Piwik_Overlay_Translations.get('clicks')
.replace(/%s/, numReferrals);
}
// bottom box position and dimension
var textPadding = ' ';
highlightElements[3].html(textPadding + text + textPadding).css({
width: 'auto',
top: offset.top + height + padding,
left: offset.left - borderWidth - padding
}).show();
var minBoxWidth = width + 2 * borderWidth + 2 * padding;
if (highlightElements[3].width() < minBoxWidth) {
// we cannot use minWidth because of IE7
highlightElements[3].width(minBoxWidth);
}
}
/** Remove highlight from link */
function unHighlightLink(linkTag, linkUrl) {
for (var i = 0; i < highlightElements.length; i++) {
highlightElements[i].hide();
}
var numLinks = linksOnPage[linkUrl].length;
for (var j = 0; j < numLinks; j++) {
var tag = linksOnPage[linkUrl][j][0].piwikTagElement;
if (tag) {
tag.removeClass('PIS_Highlighted');
tag[0].piwikHighlighted = false;
}
}
if ((typeof linkTag[0].piwikHideNotification) == 'function') {
linkTag[0].piwikHideNotification();
linkTag[0].piwikHideNotification = null;
}
}
return {
/**
* The main method
*/
initialize: function (finishCallback) {
c = Piwik_Overlay_Client.createElement;
Piwik_Overlay_Client.loadScript('plugins/Overlay/client/urlnormalizer.js', function () {
Piwik_Overlay_UrlNormalizer.initialize();
load(function () {
Piwik_Overlay_UrlNormalizer.setExcludedParameters(excludedParams);
build(function () {
finishCallback();
})
});
});
},
/**
* Remove everything from the dom and terminate timeouts.
* This can be used from the console in order to load a new implementation for debugging afterwards.
* If you add `Piwik_Overlay_FollowingPages.remove();` to the beginning and
* `Piwik_Overlay_FollowingPages.initialize(function(){});` to the end of this file, you can just
* paste it into the console to inject the new implementation.
*/
remove: function () {
for (var i = 0; i < followingPages.length; i++) {
var url = followingPages[i].label;
if (typeof linksOnPage[url] != 'undefined') {
for (var j = 0; j < linksOnPage[url].length; j++) {
var linkTag = linksOnPage[url][j];
var tagElement = linkTag[0].piwikTagElement;
if (tagElement) {
tagElement.remove();
}
linkTag[0].piwikTagElement = null;
$(linkTag).unbind('mouseenter').unbind('mouseleave');
}
}
}
for (i = 0; i < highlightElements.length; i++) {
highlightElements[i].remove();
}
if (repositionTimeout) {
window.clearTimeout(repositionTimeout);
}
if (resizeTimeout) {
window.clearTimeout(resizeTimeout);
}
$(window).unbind('resize');
}
};
})();