Editing.js – MediaWiki
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/*****************************************************************************************
* JavaScript here will be loaded by MediaWiki:Common.js when "editing mode" is detected.
*
*****************************************************************************************/
(function() { // BEGIN WRAPPER
/*****************************************************************************************
* Variables required by all functions below
*/
var tb1 = document.getElementById("wpTextbox1");
/*****************************************************************************************/
/*****************************************************************************************
* Add checkbox toggle of allowance to
* use TAB key in editing textarea to insert TAB chars
* Maintainer: BIKI User:Fred Gandt
*/
function allowTabs() {
var ecb = document.getElementsByClassName("editCheckboxes")[0],
cb = document.createElement("input"),
cb_lbl = document.createElement("label"),
tabsAllowed = function(evt) {
if (evt.keyCode == 9) {
evt.preventDefault();
var ss = tb1.selectionStart;
tb1.value = tb1.value.substr(0, ss) + String.fromCharCode(evt.keyCode) + tb1.value.substr(tb1.selectionEnd);
tb1.setSelectionRange(ss + 1, ss + 1);
}
}
initTabsAllowed = function() {
tb1.addEventListener("keydown", tabsAllowed, false);
tb1.form.action += "&allowTabs";
};
cb.setAttribute("id", "allowTabs");
cb.setAttribute("type", "checkbox");
cb.setAttribute("style", "margin-left: 3em;");
cb_lbl.setAttribute("for", "allowTabs");
cb_lbl.setAttribute("title", "Allows insertion of Tab characters when and where the Tab key is pressed");
cb_lbl.innerHTML = " Allow tabulations usage";
cb.addEventListener("change", function() {
if (this.checked) {
initTabsAllowed();
} else {
tb1.removeEventListener("keydown", tabsAllowed, false);
tb1.form.action = this.form.action.replace("&allowTabs", "");
}
}, false);
if (~window.location.search.indexOf("&allowTabs")) {
cb.checked = true;
initTabsAllowed();
}
ecb.appendChild(cb);
ecb.appendChild(cb_lbl);
}
/*****************************************************************************************/
/*****************************************************************************************
* Prevents page body scrolling when scrolling of
* the editing textarea reaches the top or bottom.
* Maintainer: BIKI User:Fred Gandt
*/
function holdStill() {
tb1.addEventListener("mousewheel", function(evt) {
evt.preventDefault();
tb1.scrollTop -= evt.wheelDelta / 3;
}, false);
}
/*****************************************************************************************/
/*****************************************************************************************
* Next ***
*/
// code code code
/*****************************************************************************************/
/*****************************************************************************************
* Call the required functions from those above
*/
allowTabs();
/*****************************************************************************************/
}()); // END WRAPPER