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/* This script adds interactivity for wiki-history webpages.
*
* The main code is within the 'on-click' handler of the "diff" links.
* Instead of standard redirection it fills-in two hidden inputs with
* the appropriate values and submits the corresponding form.
* A special care should be taken if some intermediate edits are hidden.
*
* For the sake of compatibility with ascetic browsers the code tries
* to avoid modern API and ECMAScript constructs. This makes it less
* readable and may be reconsidered in the future.
*/
document.getElementById("wh-form").method = "GET";
var wh_id = document.getElementById("wh-id" );
var wh_pid = document.getElementById("wh-pid");
var wh_cleaner = document.getElementById("wh-cleaner");
var wh_collapser = document.getElementById("wh-collapser");
var wh_radios = []; // user-visible controls for baseline selection
var wh_hidden = 0; // current number of hidden (collapsed) rows
var wh_selected = -1; // index of the currently selected radio-button
function wh_onRadio( event ){
function wh_onDifflink( event ){
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/* This script adds interactivity for wiki-history webpages.
*
* The main code is within the 'on-click' handler of the "diff" links.
* Instead of standard redirection it fills-in two hidden inputs with
* the appropriate values and submits the corresponding form.
* A special care should be taken if some intermediate edits are hidden.
*
* For the sake of compatibility with ascetic browsers the code tries
* to avoid modern API and ECMAScript constructs. This makes it less
* readable and may be reconsidered in the future.
*/
window.addEventListener( 'load', function() {
document.getElementById("wh-form").method = "GET";
var wh_id = document.getElementById("wh-id" );
var wh_pid = document.getElementById("wh-pid");
var wh_cleaner = document.getElementById("wh-cleaner");
var wh_collapser = document.getElementById("wh-collapser");
var wh_radios = []; // user-visible controls for baseline selection
var wh_hidden = 0; // current number of hidden (collapsed) rows
var wh_selected = -1; // index of the currently selected radio-button
var wh_onRadio = function( event ){
var indx = event.target.indx;
if( wh_selected == indx ){
wh_selected = -1;
event.target.checked = false;
}
else wh_selected = indx;
}
var wh_onDifflink = function( event ){
event.preventDefault();
var indx = event.target.indx;
wh_id.value = wh_radios[indx].value;
if( wh_hidden > 0 ){
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wh_pid.value = wh_radios[wh_selected].value;
wh_pid.checked = true;
}
else wh_pid.checked = false;
document.getElementById("wh-form").submit();
}
function wh_onCleaner() {
function wh_onCollapser( event ) {
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wh_pid.value = wh_radios[wh_selected].value;
wh_pid.checked = true;
}
else wh_pid.checked = false;
document.getElementById("wh-form").submit();
}
var wh_onCleaner = function() {
if( wh_selected >= 0 ) {
wh_radios[wh_selected].checked = false;
wh_selected = -1;
}
}
var wh_onCollapser = function( event ){
var collapsing = ( wh_hidden == 0 );
for( var k = 0; k < wh_radios.length; k++ ){
var radio = wh_radios[k];
var tr = radio.parentElement.parentElement;
if( tr.className == "wh-intermediate" ){
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}
else {
wh_collapser.title="Hide intermediate edits";
wh_collapser.innerHTML = " ♲"
}
}
(function wh_Init(){
var inputs = document.getElementsByTagName("input");
for( var k = 0, indx = 0; k < inputs.length; k++ ) {
var r = inputs[k];
if( r.type == "radio" && r.name == "baseline" ) {
}
}
for( var edits = 0, k = wh_radios.length - 1; k >= 0; k-- ) {
var td = wh_radios[k].parentElement.nextElementSibling;
if( td.parentElement.className == "wh-intermediate" )
else if( edits > 0 ){
}
}
var links = document.getElementsByTagName("a");
for( var i = 0, indx = 0; i < links.length; i++ ) {
var l = links[i];
if( l.className == "wh-difflink" ){
}
}
wh_cleaner.addEventListener( "click", wh_onCleaner );
wh_collapser.addEventListener( "click", wh_onCollapser );
wh_collapser.title="Hide intermediate edits";
wh_collapser.hidden = false;
})();
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}
else {
wh_collapser.title="Hide intermediate edits";
wh_collapser.innerHTML = " ♲"
}
}
var inputs = document.getElementsByTagName("input");
for( var k = 0, indx = 0; k < inputs.length; k++ ) {
var r = inputs[k];
if( r.type == "radio" && r.name == "baseline" ) {
wh_radios.push( r );
r.indx = indx++;
r.addEventListener( "click", wh_onRadio );
r.disabled = false;
var td = r.parentElement.nextElementSibling;
r.iterspan = td.getElementsByTagName("span")[0];
}
}
for( var edits = 0, k = wh_radios.length - 1; k >= 0; k-- ) {
var td = wh_radios[k].parentElement.nextElementSibling;
if( td.parentElement.className == "wh-intermediate" )
edits++;
else if( edits > 0 ){
var span = td.getElementsByTagName("span")[0];
span.innerHTML = " ♲" + edits;
wh_radios[k].iterspan = span;
edits = 0;
// also: ∪ (union) Σ (sigma) × (times)
}
}
var links = document.getElementsByTagName("a");
for( var i = 0, indx = 0; i < links.length; i++ ) {
var l = links[i];
if( l.className == "wh-difflink" ){
l.indx = indx++;
l.addEventListener( "click", wh_onDifflink );
}
}
wh_cleaner.addEventListener( "click", wh_onCleaner );
wh_collapser.addEventListener( "click", wh_onCollapser );
wh_collapser.title="Hide intermediate edits";
wh_collapser.hidden = false;
}); // window.addEventListener( 'load' ...
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