Current File : /www/varak.net/wiki.varak.net/resources/src/mediawiki.special.preferences.ooui/confirmClose.js
/*!
* JavaScript for Special:Preferences: Enable save button and prevent the window being accidentally
* closed when any form field is changed.
*/
( function () {
$( function () {
var allowCloseWindow, saveButton, restoreButton;
// Check if all of the form values are unchanged.
// (This function could be changed to infuse and check OOUI widgets, but that would only make it
// slower and more complicated. It works fine to treat them as HTML elements.)
function isPrefsChanged() {
var inputs = $( '#mw-prefs-form :input[name]' ),
input, $input, inputType,
index, optIndex,
opt;
for ( index = 0; index < inputs.length; index++ ) {
input = inputs[ index ];
$input = $( input );
// Different types of inputs have different methods for accessing defaults
if ( $input.is( 'select' ) ) {
// <select> has the property defaultSelected for each option
for ( optIndex = 0; optIndex < input.options.length; optIndex++ ) {
opt = input.options[ optIndex ];
if ( opt.selected !== opt.defaultSelected ) {
return true;
}
}
} else if ( $input.is( 'input' ) || $input.is( 'textarea' ) ) {
// <input> has defaultValue or defaultChecked
inputType = input.type;
if ( inputType === 'radio' || inputType === 'checkbox' ) {
if ( input.checked !== input.defaultChecked ) {
return true;
}
} else if ( input.value !== input.defaultValue ) {
return true;
}
}
}
return false;
}
saveButton = OO.ui.infuse( $( '#prefcontrol' ) );
restoreButton = OO.ui.infuse( $( '#mw-prefs-restoreprefs' ) );
// Disable the button to save preferences unless preferences have changed
// Check if preferences have been changed before JS has finished loading
saveButton.setDisabled( !isPrefsChanged() );
// Attach capturing event handlers to the document, to catch events inside OOUI dropdowns:
// * Use capture because OO.ui.SelectWidget also does, and it stops event propagation,
// so the event is not fired on descendant elements
// * Attach to the document because the dropdowns are in the .oo-ui-defaultOverlay element
// (and it doesn't exist yet at this point, so we can't attach them to it)
[ 'change', 'keyup', 'mouseup' ].forEach( function ( eventType ) {
document.addEventListener( eventType, function () {
// Make sure SelectWidget's event handlers run first
setTimeout( function () {
saveButton.setDisabled( !isPrefsChanged() );
} );
}, true );
} );
// Set up a message to notify users if they try to leave the page without
// saving.
allowCloseWindow = mw.confirmCloseWindow( {
test: isPrefsChanged,
message: mw.msg( 'prefswarning-warning', mw.msg( 'saveprefs' ) ),
namespace: 'prefswarning'
} );
$( '#mw-prefs-form' ).on( 'submit', allowCloseWindow.release );
restoreButton.on( 'click', function () {
allowCloseWindow.release();
// The default behavior of events in OOUI is always prevented. Follow the link manually.
// Note that middle-click etc. still works, as it doesn't emit a OOUI 'click' event.
location.href = restoreButton.getHref();
} );
} );
}() );
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