//<pre>
// Strip document hyperlinks (esp. wikilinks), leaving only their text; useful for FireVox screen reader
// Also fix bug 11555 (order of section title and edit link) and double caption
//
// To use this script, add "importScript('User:Proteins/striparticlelinks.js');" to your monobook.js subpage
// under your user page, as you can see at User:Proteins/monobook.js
function stripHyperlinks() {
var alert_string = "";
var on_main_page = false;
var eliminate_edit_section_links = true;
var delete_line_breaks_in_mp_topbanner = false;
var strip_hyperlinks = true; // turn off to control stripping in some sections
var within_closing_section = false; // determine when we near the end of the article
var force_hyperlink_deletion = false;
var temp_hyperlink;
var temp_hyperlink_text;
var temp_anchor_name;
var hyperlinks;
var num_hyperlinks = 0;
var hyperlink_index = 0;
var hyperlink_counter = 0;
var num_hyperlinks_removed = 0;
var num_redlinks = 0;
var redlink_index = 0;
var num_redlinks_removed = 0;
var redlink_names = new Array();
var parent_node;
var element_node;
var replacement_node;
var grandparent_node;
var next_sibling_node;
var prev_sibling_node;
var greatgrandparent_node;
var greatgreatgrandparent_node;
var prev_element_node;
var child_node;
var num_child_nodes = 0;
var child_node_index = 0;
var headers;
var temp_header;
var num_headers = 0;
var header_index = 0;
var mw_headline_node;
var editsection_node;
var num_header_swaps = 0;
var total_num_header_swaps = 0;
var num_header_tag_strings = 0;
var header_tag_string_index = 0;
var header_tag_strings = [ "H2", "H3", "H4", "H5" ];
var temp_image;
var num_images = 0;
var num_pixels = 0;
var alt_string = "";
var src_string = "";
var image_index = 0;
var image_counter = 0;
var num_significant_images = 0;
var num_uncaptioned_images = 0;
var temp_list;
var list_index = 0;
var max_list_index = 0;
var num_list_mergers = 0;
var ordered_lists;
var num_ordered_lists = 0;
var unordered_lists;
var num_unordered_lists = 0;
var discursive_lists;
var num_discursive_lists = 0;
// Check whether we're on the Main Page
on_main_page = false;
if (document.getElementById("mp-topbanner")) {
on_main_page = true;
// window.alert("We're reading the Main Page.");
// Try to remove two annoying linebeaks, per Graham87
if (delete_line_breaks_in_mp_topbanner == true) {
next_sibling_node = document.getElementById('articlecount');
element_node = next_sibling_node.previousSibling;
prev_sibling_node = element_node.previousSibling;
parent_node = next_sibling_code.parentNode;
//There no document subtree, just the text in two subsequent DIV's
child_node = document.createTextNode(element_node.innerHTML);
prev_sibling_node.appendChild(child_node);
child_node = document.createTextNode(next_sibling_node.innerHTML);
prev_sibling_node.appendChild(child_node);
parent_node.removeChild(element_node);
parent_node.removeChild(next_sibling_node);
}
} // closes check whether we're on the Main Page
// Merge adjacent lists of the same type
num_list_mergers = 0;
diagnostic_string = "";
unordered_lists = document.getElementById("bodyContent").getElementsByTagName("UL");
num_unordered_lists = unordered_lists.length;
max_list_index = num_unordered_lists - 1;
diagnostic_string += "There are " + num_unordered_lists + " unordered lists in this document.\n\n";
for (list_index=max_list_index; list_index>=0; list_index--) { // merge upwards
temp_list = unordered_lists[list_index];
prev_element_node = temp_list.previousSibling;
while ((prev_element_node) && (prev_element_node.nodeType != 1)) { // look for previous Element node
if (prev_element_node.nodeType == 3) {
text_length = prev_element_node.data.replace(/\s/ig, "").length;
if (text_length > 0 ) { break; } // break off loop if a non-empty text area is encountered
}
prev_element_node = prev_element_node.previousSibling;
} // closes search for the previous sibling Element node
if (!prev_element_node) { continue; }
diagnostic_string += "Previous element of UL " + list_index + " is of type " + prev_element_node.nodeType + " and tagName " + prev_element_node.nodeName + ".\n";
// if (prev_element_node.nodeType == 3) { diagnostic_string += " text = " + prev_element_node.data.replace(/\s/ig, "") + " length = " + prev_element_node.data.replace(/\s/ig, "").length + "\n"; }
if (prev_element_node.nodeName == "UL") {
parent_node = temp_list.parentNode;
num_child_nodes = temp_list.childNodes.length;
for (child_node_index = 0; child_node_index < num_child_nodes; child_node_index++) {
child_node = temp_list.childNodes[0];
prev_element_node.appendChild(child_node);
}
prev_element_node.normalize();
parent_node.removeChild(temp_list);
parent_node.normalize();
num_list_mergers++;
diagnostic_string += "Merged unordered list " + list_index + " upwards.\n";
} // closes check for adjacent unordered list
} // closes loop over unordered lists
// window.alert(diagnostic_string);
// Merge ordered lists
diagnostic_string = "";
ordered_lists = document.getElementById("bodyContent").getElementsByTagName("OL");
num_ordered_lists = ordered_lists.length;
max_list_index = num_ordered_lists - 1;
diagnostic_string += "There are " + num_ordered_lists + " ordered lists in this document.\n\n";
for (list_index=max_list_index; list_index>=0; list_index--) { // merge upwards
temp_list = ordered_lists[list_index];
prev_element_node = temp_list.previousSibling;
while ((prev_element_node) && (prev_element_node.nodeType != 1)) { // look for previous Element node
if (prev_element_node.nodeType == 3) {
text_length = prev_element_node.data.replace(/\s/ig, "").length;
if (text_length > 0 ) { break; } // break off loop if a non-empty text area is encountered
}
prev_element_node = prev_element_node.previousSibling;
} // closes search for the previous sibling Element node
if (!prev_element_node) { continue; }
diagnostic_string += "Previous element of OL " + list_index + " is of type " + prev_element_node.nodeType + " and tagName " + prev_element_node.nodeName + ".\n";
// if (prev_element_node.nodeType == 3) { diagnostic_string += " text = " + prev_element_node.data.replace(/\s/ig, "") + " length = " + prev_element_node.data.replace(/\s/ig, "").length + "\n"; }
if (prev_element_node.nodeName == "OL") {
parent_node = temp_list.parentNode;
num_child_nodes = temp_list.childNodes.length;
for (child_node_index = 0; child_node_index < num_child_nodes; child_node_index++) {
child_node = temp_list.childNodes[0];
prev_element_node.appendChild(child_node);
}
prev_element_node.normalize();
parent_node.removeChild(temp_list);
parent_node.normalize();
num_list_mergers++;
diagnostic_string += "Merged ordered list " + list_index + " upwards.\n";
} // closes check for adjacent ordered list
} // closes loop over ordered lists
// window.alert(diagnostic_string);
// Merge discursive lists
diagnostic_string = "";
discursive_lists = document.getElementById("bodyContent").getElementsByTagName("DL");
num_discursive_lists = discursive_lists.length;
max_list_index = num_discursive_lists - 1;
diagnostic_string += "There are " + num_discursive_lists + " discursive lists in this document.\n\n";
for (list_index=max_list_index; list_index>=0; list_index--) { // merge upwards
temp_list = discursive_lists[list_index];
prev_element_node = temp_list.previousSibling;
while ((prev_element_node) && (prev_element_node.nodeType != 1)) { // look for previous Element node
if (prev_element_node.nodeType == 3) {
text_length = prev_element_node.data.replace(/\s/ig, "").length;
if (text_length > 0 ) { break; } // break off loop if a non-empty text area is encountered
}
prev_element_node = prev_element_node.previousSibling;
} // closes search for the previous sibling Element node
if (!prev_element_node) { continue; }
diagnostic_string += "Previous element of DL " + list_index + " is of type " + prev_element_node.nodeType + " and tagName " + prev_element_node.nodeName + ".\n";
// if (prev_element_node.nodeType == 3) { diagnostic_string += " text = " + prev_element_node.data.replace(/\s/ig, "") + " length = " + prev_element_node.data.replace(/\s/ig, "").length + "\n"; }
if (prev_element_node.nodeName == "DL") {
parent_node = temp_list.parentNode;
num_child_nodes = temp_list.childNodes.length;
for (child_node_index = 0; child_node_index < num_child_nodes; child_node_index++) {
child_node = temp_list.childNodes[0];
prev_element_node.appendChild(child_node);
}
prev_element_node.normalize();
parent_node.removeChild(temp_list);
parent_node.normalize();
num_list_mergers++;
diagnostic_string += "Merged discursive list " + list_index + " upwards.\n";
} // closes check for adjacent discursive list
} // closes loop over discursive lists
// window.alert(diagnostic_string);
if (num_list_mergers == 1) {
alert_string += "\nThere was one list merger.\n";
} else {
alert_string += "\nThere were " + num_list_mergers + " list mergers.\n";
}
// Fix bug 11555 for screen readers: swap order of "editsection" and "mw-headline" nodes in headings
total_num_header_swaps = 0;
num_header_tag_strings = header_tag_strings.length;
for (header_tag_string_index = 0; header_tag_string_index < num_header_tag_strings; header_tag_string_index++) {
headers = document.getElementsByTagName(header_tag_strings[header_tag_string_index]);
num_headers = headers.length;
num_header_swaps = 0;
for (header_index=1; header_index<num_headers; header_index++) {
temp_header = headers[header_index];
editsection_node = null;
mw_headline_node = null;
num_child_nodes = temp_header.childNodes.length;
for (child_node_index = 0; child_node_index < num_child_nodes; child_node_index++) {
child_node = temp_header.childNodes[child_node_index];
if (child_node.className == "editsection") {
editsection_node = child_node;
} else if (child_node.className == "mw-headline") {
mw_headline_node = child_node;
}
}
if ((eliminate_edit_section_links) && (editsection_node != null)) {
temp_header.removeChild(editsection_node);
num_header_swaps++;
} else if ((editsection_node != null) && (mw_headline_node != null)) {
temp_header.insertBefore(mw_headline_node, editsection_node);
num_header_swaps++;
}
} // closes loop over headers of that type in document
total_num_header_swaps += num_header_swaps;
} // closes loop over different types of headers
// Acknowledgment
if (eliminate_edit_section_links) {
if (total_num_header_swaps == 1) {
alert_string += "Eliminated the edit-section link of one header.\n";
} else {
alert_string += "Eliminated the edit-section link of " + total_num_header_swaps + " headers.\n";
}
} else {
if (total_num_header_swaps == 1) {
alert_string += "Swapped text and edit link in one header.\n";
} else {
alert_string += "Swapped text and edit link in " + total_num_header_swaps + " headers.\n";
}
}
// Main work of the script: eliminating hyperlinks
hyperlinks = document.getElementById("bodyContent").getElementsByTagName("a");
num_redlinks = 0;
num_redlinks_removed = 0;
within_closing_section = false;
num_hyperlinks = hyperlinks.length;
while (hyperlink_counter<num_hyperlinks) {
temp_hyperlink = hyperlinks[hyperlink_index];
hyperlink_counter++;
// Count the redlinks
if (temp_hyperlink.className == "new") { num_redlinks++; }
// Determine whether we've reached the end of the article
if ((temp_hyperlink.name) && (!within_closing_section)) {
temp_anchor_name = temp_hyperlink.name;
temp_anchor_name = temp_anchor_name.replace(/:$/ig,""); // eliminate colons at end
temp_anchor_name = temp_anchor_name.replace(/s$/ig,""); // eliminate plurals at end
temp_anchor_name = temp_anchor_name.replace(/See_also/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Related_topic/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Related_article/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Further_reading/ig,"");
temp_anchor_name = temp_anchor_name.replace(/External_link/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Footnote/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Note/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Reference/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Citation/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Source/ig,"");
temp_anchor_name = temp_anchor_name.replace(/Link/ig,"");
temp_anchor_name = temp_anchor_name.replace(/s([_\s]+)and([_\s]+)/ig,"");
temp_anchor_name = temp_anchor_name.replace(/([_\s]+)and([_\s]+)/ig,"");
temp_anchor_name = temp_anchor_name.replace(/([_\s]+)/ig,"");
if (temp_anchor_name == "") {
within_closing_section = true;
// window.alert("The end of the article begins with section \"" + temp_hyperlink.name + "\"\n");
}
} // closes check whether we've reached the end of the article
// allow some sections to be skipped
if (temp_hyperlink.name == "See_also") {
strip_hyperlinks = false;
} else if (temp_hyperlink.name == "Related_topics") {
strip_hyperlinks = false;
} else if (temp_hyperlink.name == "Related_articles") {
strip_hyperlinks = false;
} else if (temp_hyperlink.name) {
strip_hyperlinks = true;
}
// if ((strip_hyperlinks == false) && (temp_hyperlink.className != "new")) { continue; }
// criteria for keeping some links
if (!temp_hyperlink.title) { hyperlink_index++; continue; } // replace only wikilinks?
if (temp_hyperlink.title.match(/^User:/)) { hyperlink_index++; continue; } // keep user names
if (temp_hyperlink.title.match(/^User\stalk:/)) { hyperlink_index++; continue; } // keep user talk pages
if (temp_hyperlink.getAttribute("accesskey")) { hyperlink_index++; continue; } // avoid command links
if (temp_hyperlink.className == "image") { hyperlink_index++; continue; } // keep images
if (temp_hyperlink.className == "internal") { hyperlink_index++; continue; } // keep Enlarge buttons
if (temp_hyperlink.className == "external text") { hyperlink_index++; continue; } // keep geotags, etc.
// if ((on_main_page) && (temp_hyperlink.className == "extiw")) { continue; } // interwiki links at bottom
// force the deletion of some types of links
force_hyperlink_deletion = false;
/*
if (temp_hyperlink.className == "new") {
force_hyperlink_deletion = true;
}
*/
// check ancestor links against criteria to keep other types of links
if (!force_hyperlink_deletion) {
parent_node = temp_hyperlink.parentNode;
grandparent_node = parent_node.parentNode;
greatgrandparent_node = grandparent_node.parentNode;
greatgreatgrandparent_node = greatgrandparent_node.parentNode;
//Save all bold links on the Main Page
if ((on_main_page) && (parent_node.nodeName == "B")) { hyperlink_index++; continue; }
// Save specific types of navigational links on the Main Page
// Save links in the mp-strapline
if ((on_main_page) && ((greatgreatgrandparent_node.id == "mp-strapline") || (greatgreatgrandparent_node.parentNode.id == "mp-strapline"))) { hyperlink_index++; continue; }
// Save "Recently featured:" links: most other parts use DIV; this section uses P as the parent
if ((on_main_page) && (parent_node.nodeName == "P")) {
next_sibling_node = parent_node.nextSibling;
if ((next_sibling_node) && (next_sibling_node.nextSibling)) {
next_sibling_node = next_sibling_node.nextSibling;
if ((next_sibling_node.nodeName == "DIV") && (next_sibling_node.className = "noprint")) { hyperlink_index++; continue; }
}
/*
diagnostic_string = temp_hyperlink.innerHTML;
diagnostic_string += "\nParent node: " + parent_node.nodeName;
if (parent_node.className) { diagnostic_string += "Class: " + parent_node.className; }
diagnostic_string += "\nSibling node: " + next_sibling_node.nodeName;
if (next_sibling_node.className) { diagnostic_string += "Class: " + next_sibling_node.className; }
diagnostic_string += "\nGrandparent node: " + grandparent_node.nodeName;
if (grandparent_node.className) { diagnostic_string += "Class: " + grandparent_node.className; }
window.alert(diagnostic_string);
*/
}
// if ((on_main_page) && (parent_node.nodeName == "P") && (grandparent_node.nodeName != "TD")) { hyperlink_index++; continue; }
// if ((on_main_page) && (parent_node.nodeName == "P") && (grandparent_node.nodeName != "TD") && (greatgrandparent_node.nodeName != "TD") && (greatgreatgrandparent_node.nodeName != "TD")) { hyperlink_index++; continue; }
// Imperfect solutions:
// if on Main Page and parent_node firstChild text equals "Recently featured: ": Language-specific is bad
// if on Main Page and nextSibling of parent is DIV with align=right and className=noprint and prevSibling has id mp-tfa
// next_sibling_node = parent_node.nextSibling;
// prev_sibling_node = parent_node.previousSibling;
//FAILED if ((on_main_page) && (parent_node.nodeName == "P") && (next_sibling_node.nodeName == "DIV") && (next_sibling_node.className == "noprint")) { hyperlink_index++; continue; }
//FAILED if ((on_main_page) && (parent_node.nodeName == "P") && (next_sibling_node.nodeName == "DIV") && (next_sibling_node.className == "noprint") && (grandparent_node.nodeName == "DIV")) { hyperlink_index++; continue; }
// Links that should be kept:
// keep links within most lists per Graham87's suggestion, but not References and Notes; allow anchor to be in italics
if (((parent_node.nodeName == "LI") || (grandparent_node.nodeName == "LI")) && (!on_main_page) && (grandparent_node.className != "references") && (greatgrandparent_node.className != "references-small") && (temp_hyperlink.className != "new")) {hyperlink_index++; continue; }
// keep section edit buttons
if (parent_node.className == "editsection") { hyperlink_index++; continue; }
// keep sidebar buttons
if (greatgrandparent_node.className == "pBody") { hyperlink_index++; continue; }
// keep category links
if ((greatgrandparent_node.className == "catlinks") || (grandparent_node.className == "catlinks")) { hyperlink_index++; continue; }
// keep disambiguations
if ((parent_node.className == "dablink") || (grandparent_node.className == "dablink") || (greatgrandparent_node.className == "dablink")) { hyperlink_index++; continue; }
// keep "Main article" links
if (grandparent_node.className == "noprint relarticle mainarticle") { hyperlink_index++; continue; }
// keep "Further details" links
if ((grandparent_node.className == "boilerplate seealso") || (grandparent_node.className == "boilerplate further")){ hyperlink_index++; continue; }
// keep protected and semi-protected icons
if (grandparent_node.className == "metadata plainlinks") { hyperlink_index++; continue; }
// keep links in sound samples
if ((parent_node.className == "medialist listenlist") || (grandparent_node.className == "medialist listenlist") || (greatgrandparent_node.className == "medialist listenlist")) { hyperlink_index++; continue; }
} // closes check for forced deletion of hyperlink
// Old technique for replacing link; fails for italicized text, and is not general
// temp_hyperlink_text = document.createTextNode(temp_hyperlink.innerHTML);
// parent_node.replaceChild(temp_hyperlink_text, temp_hyperlink);
// Better technique for replacing links: graft subtree back into the document
num_child_nodes = temp_hyperlink.childNodes.length;
for (child_node_index = 0; child_node_index < num_child_nodes; child_node_index++) {
child_node = temp_hyperlink.childNodes[0];
parent_node.insertBefore(child_node, temp_hyperlink);
}
parent_node.removeChild(temp_hyperlink);
num_hyperlinks_removed++;
// Count the redlinks removed
if (temp_hyperlink.className == "new") {
redlink_names.push(temp_hyperlink.title);
num_redlinks_removed++;
}
// Merge blocks of text that are adjacent in the document tree, prevent screen reader pauses
parent_node.normalize();
} // closes loop over hyperlinks
// Acknowledgment
if (num_redlinks == 1) {
alert_string += "Counted one redlink in the main article, unlinked " + num_redlinks_removed + ".\n";
if (num_redlinks_removed == 1) {
alert_string += " " + redlink_names[0] + "\n";
}
} else {
alert_string += "Counted " + num_redlinks + " redlinks in the main article, unlinked " + num_redlinks_removed + ".\n";
if (num_redlinks_removed == 1) {
alert_string += " " + redlink_names[0] + "\n";
} else if (num_redlinks_removed > 1) {
diagnostic_string = "Removed " + num_redlinks_removed + " redlinks:\n\n";
for (redlink_index=1; redlink_index<=num_redlinks_removed; redlink_index++) {
if ((redlink_index%40 == 1) && (redlink_index > 1)) {
window.alert(diagnostic_string);
diagnostic_string = "List of " + num_redlinks_removed + " redlinks continued...\n\n";
}
diagnostic_string += redlink_index + " " + redlink_names[redlink_index-1] + "\n";
} // closes loop over removed redlinks
window.alert(diagnostic_string);
} // checks whether more than one redlink was removed
} // closes check for redlinks
if (num_hyperlinks_removed == 1) {
alert_string += "Removed one hyperlink from this article.\n";
} else {
alert_string += "Removed " + num_hyperlinks_removed + " hyperlinks from this article.\n";
}
// Count number of significant images
// This code seems dangerous for Internet Explorer
image_counter = 0;
num_significant_images = 0;
num_images = document.images.length;
for (image_index=0; image_index<num_images; image_index++) {
temp_image = document.images[image_index];
num_pixels = temp_image.width * temp_image.height;
if (num_pixels > 5000) {
image_counter++;
} // closes check for a "significant" image, not an tiny icon
} // closes loop over the images
num_significant_images = image_counter;
// Amend ALT text of image captions, initially to avoid double reading of captions
image_counter = 0;
num_uncaptioned_images = 0;
num_images = document.images.length;
for (image_index=0; image_index<num_images; image_index++) {
alt_string = "";
temp_image = document.images[image_index];
num_pixels = temp_image.width * temp_image.height;
if (num_pixels > 5000) {
image_counter++;
alt_string = "Image " + image_counter + " of " + num_significant_images + ": ";
if (temp_image.alt != "") { // preface image with number
temp_image.alt = alt_string + temp_image.alt;
} else if (temp_image.src) {
temp_image.alt = alt_string + temp_image.src.split('/').pop();
}
} // closes check for a "significant" image, not an tiny icon
/*
if (temp_image.className == "thumbimage") {
if (temp_image.alt) {
num_uncaptioned_images++;
alt_string = "Image " + num_uncaptioned_images + ": ";
temp_image.alt = alt_string + temp_image.alt; // preface image with number
}
} else if (num_pixels > 5000) { // uncaptioned infobox images
num_uncaptioned_images++;
}
*/
} // closes loop over the images
// Acknowledgment
if (image_counter == 1) {
alert_string += "Modified ALT text of one image.\n";
} else {
alert_string += "Modified ALT text of " + image_counter + " images.\n";
}
// Print combined alert string
window.alert(alert_string);
} // closes function stripHyperlinks()
addOnloadHook(function () {
mw.util.addPortletLink('p-cactions', 'javascript:stripHyperlinks()', '–links', 'ca-nolinks', 'Strips links for screen readers like FireVox', 's', '');
});
//</pre>
