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/**
* Set up the protection chaining interface (i.e. "unlock move permissions" checkbox)
* on the protection form
*
* @param String tableId Identifier of the table containing UI bits
* @param String labelText Text to use for the checkbox label
*/
function protectInitialize( tableId, labelText ) {
if( !( document.createTextNode && document.getElementById && document.getElementsByTagName ) )
return false;
var box = document.getElementById( tableId );
if( !box )
return false;
var tbody = box.getElementsByTagName( 'tbody' )[0];
var row = document.createElement( 'tr' );
tbody.appendChild( row );
row.appendChild( document.createElement( 'td' ) );
var col = document.createElement( 'td' );
row.appendChild( col );
var check = document.createElement( 'input' );
check.id = 'mwProtectUnchained';
check.type = 'checkbox';
col.appendChild( check );
addClickHandler( check, protectChainUpdate );
col.appendChild( document.createTextNode( ' ' ) );
var label = document.createElement( 'label' );
label.setAttribute( 'for', 'mwProtectUnchained' );
label.appendChild( document.createTextNode( labelText ) );
col.appendChild( label );
check.checked = !protectAllMatch();
protectEnable( check.checked );
allowCascade();
return true;
}
function allowCascade() {
var lists = protectSelectors();
for( var i = 0; i < lists.length; i++ ) {
if( lists[i].selectedIndex > -1 ) {
var items = lists[i].getElementsByTagName( 'option' );
var selected = items[ lists[i].selectedIndex ].value;
if( wgCascadeableLevels.indexOf( selected ) == -1 ) {
document.getElementById( 'mwProtect-cascade' ).checked = false;
document.getElementById( 'mwProtect-cascade' ).disabled = true;
return false;
}
}
}
document.getElementById( 'mwProtect-cascade' ).disabled = false;
return true;
}
/**
* When protection levels are locked together, update the rest
* when one action's level changes
*
* @param Element source Level selector that changed
*/
function protectLevelsUpdate(source) {
if( !protectUnchained() )
protectUpdateAll( source.selectedIndex );
allowCascade();
}
/**
* Update chain status and enable/disable various bits of the UI
* when the user changes the "unlock move permissions" checkbox
*/
function protectChainUpdate() {
if( protectUnchained() ) {
protectEnable( true );
} else {
protectChain();
protectEnable( false );
}
allowCascade();
}
/**
* Are all actions protected at the same level?
*
* @return boolean
*/
function protectAllMatch() {
var values = new Array();
protectForSelectors(function(set) {
values[values.length] = set.selectedIndex;
});
for (var i = 1; i < values.length; i++) {
if (values[i] != values[0]) {
return false;
}
}
return true;
}
/**
* Is protection chaining on or off?
*
* @return bool
*/
function protectUnchained() {
var unchain = document.getElementById( 'mwProtectUnchained' );
return unchain
? unchain.checked
: true; // No control, so we need to let the user set both levels
}
/**
* Find the highest-protected action and set all others to that level
*/
function protectChain() {
var maxIndex = -1;
protectForSelectors(function(set) {
if (set.selectedIndex > maxIndex) {
maxIndex = set.selectedIndex;
}
});
protectUpdateAll(maxIndex);
}
/**
* Protect all actions at the specified level
*
* @param int index Protection level
*/
function protectUpdateAll(index) {
protectForSelectors(function(set) {
if (set.selectedIndex != index) {
set.selectedIndex = index;
}
});
}
/**
* Apply a callback to each protection selector
*
* @param callable func Callback function
*/
function protectForSelectors(func) {
var selectors = protectSelectors();
for (var i = 0; i < selectors.length; i++) {
func(selectors[i]);
}
}
/**
* Get a list of all protection selectors on the page
*
* @return Array
*/
function protectSelectors() {
var all = document.getElementsByTagName("select");
var ours = new Array();
for (var i = 0; i < all.length; i++) {
var set = all[i];
if (set.id.match(/^mwProtect-level-/)) {
ours[ours.length] = set;
}
}
return ours;
}
/**
* Enable/disable protection selectors
*
* @param boolean val Enable?
*/
function protectEnable(val) {
// fixme
var first = true;
protectForSelectors(function(set) {
if (first) {
first = false;
} else {
set.disabled = !val;
set.style.visible = val ? "visible" : "hidden";
}
});
}
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