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/**
* Attaches behaviors for the Tracker module's History module integration.
*
* May only be loaded for authenticated users, with the History module enabled.
*/
(function ($, Drupal, window) {
'use strict';
/**
* Render "new" and "updated" node indicators, as well as "X new" replies links.
*/
Drupal.behaviors.trackerHistory = {
attach: function (context) {
// Find all "new" comment indicator placeholders newer than 30 days ago that
// have not already been read after their last comment timestamp.
var nodeIDs = [];
var $nodeNewPlaceholders = $(context)
.find('[data-history-node-timestamp]')
.once('history')
.filter(function () {
var nodeTimestamp = parseInt(this.getAttribute('data-history-node-timestamp'), 10);
var nodeID = this.getAttribute('data-history-node-id');
if (Drupal.history.needsServerCheck(nodeID, nodeTimestamp)) {
nodeIDs.push(nodeID);
return true;
}
else {
return false;
}
});
// Find all "new" comment indicator placeholders newer than 30 days ago that
// have not already been read after their last comment timestamp.
var $newRepliesPlaceholders = $(context)
.find('[data-history-node-last-comment-timestamp]')
.once('history')
.filter(function () {
var lastCommentTimestamp = parseInt(this.getAttribute('data-history-node-last-comment-timestamp'), 10);
var nodeTimestamp = parseInt(this.previousSibling.previousSibling.getAttribute('data-history-node-timestamp'), 10);
// Discard placeholders that have zero comments.
if (lastCommentTimestamp === nodeTimestamp) {
return false;
}
var nodeID = this.previousSibling.previousSibling.getAttribute('data-history-node-id');
if (Drupal.history.needsServerCheck(nodeID, lastCommentTimestamp)) {
if (nodeIDs.indexOf(nodeID) === -1) {
nodeIDs.push(nodeID);
}
return true;
}
else {
return false;
}
});
if ($nodeNewPlaceholders.length === 0 && $newRepliesPlaceholders.length === 0) {
return;
}
// Fetch the node read timestamps from the server.
Drupal.history.fetchTimestamps(nodeIDs, function () {
processNodeNewIndicators($nodeNewPlaceholders);
processNewRepliesIndicators($newRepliesPlaceholders);
});
}
};
function processNodeNewIndicators($placeholders) {
var newNodeString = Drupal.t('new');
var updatedNodeString = Drupal.t('updated');
$placeholders.each(function (index, placeholder) {
var timestamp = parseInt(placeholder.getAttribute('data-history-node-timestamp'), 10);
var nodeID = placeholder.getAttribute('data-history-node-id');
var lastViewTimestamp = Drupal.history.getLastRead(nodeID);
if (timestamp > lastViewTimestamp) {
var message = (lastViewTimestamp === 0) ? newNodeString : updatedNodeString;
$(placeholder).append('<span class="marker">' + message + '</span>');
}
});
}
function processNewRepliesIndicators($placeholders) {
// Figure out which placeholders need the "x new" replies links.
var placeholdersToUpdate = {};
$placeholders.each(function (index, placeholder) {
var timestamp = parseInt(placeholder.getAttribute('data-history-node-last-comment-timestamp'), 10);
var nodeID = placeholder.previousSibling.previousSibling.getAttribute('data-history-node-id');
var lastViewTimestamp = Drupal.history.getLastRead(nodeID);
// Queue this placeholder's "X new" replies link to be downloaded from the
// server.
if (timestamp > lastViewTimestamp) {
placeholdersToUpdate[nodeID] = placeholder;
}
});
// Perform an AJAX request to retrieve node view timestamps.
var nodeIDs = Object.keys(placeholdersToUpdate);
if (nodeIDs.length === 0) {
return;
}
$.ajax({
url: Drupal.url('comments/render_new_comments_node_links'),
type: 'POST',
data: {'node_ids[]': nodeIDs},
dataType: 'json',
success: function (results) {
for (var nodeID in results) {
if (results.hasOwnProperty(nodeID) && placeholdersToUpdate.hasOwnProperty(nodeID)) {
var url = results[nodeID].first_new_comment_link;
var text = Drupal.formatPlural(results[nodeID].new_comment_count, '1 new', '@count new');
$(placeholdersToUpdate[nodeID]).append('<br /><a href="' + url + '">' + text + '</a>');
}
}
}
});
}
})(jQuery, Drupal, window);