wikimedia/mediawiki-core

/*!
 * JavaScript for Special:EditWatchlist
 */
( function () {
    $( function () {
        var checkAllChangeOngoing = false;
        var multiselectChangeOngoing = false;

        var checkAllCheckboxes = $( '.mw-watchlistedit-checkall .oo-ui-checkboxInputWidget' )
            .toArray()
            .map( function ( element ) {
                return OO.ui.infuse( element );
            } );

        var multiselects = $( '.mw-watchlistedit-check .oo-ui-checkboxMultiselectInputWidget' )
            .toArray()
            .map( function ( element ) {
                return OO.ui.infuse( element ).checkboxMultiselectWidget;
            } );

        checkAllCheckboxes.forEach( function ( checkbox, index ) {
            checkbox.on( 'change', function ( isChecked ) {
                if ( multiselectChangeOngoing ) {
                    return;
                }
                checkAllChangeOngoing = true;

                // Select or de-select all the title checkboxes for this namespace
                var multiselect = multiselects[ index ];
                multiselect.selectItems( isChecked ? multiselect.items : [] );

                checkAllChangeOngoing = false;
            } );
        } );

        multiselects.forEach( function ( multiselect, index ) {
            multiselect.on( 'change', function () {
                if ( checkAllChangeOngoing ) {
                    return;
                }
                multiselectChangeOngoing = true;

                // Update the state of the check-all checkbox for this namespace
                var checkAllCheckbox = checkAllCheckboxes[ index ];
                var numSelectedItems = multiselect.findSelectedItems().length;
                if ( numSelectedItems === multiselect.items.length ) {
                    checkAllCheckbox.setSelected( true );
                    checkAllCheckbox.setIndeterminate( false );
                } else if ( numSelectedItems === 0 ) {
                    checkAllCheckbox.setSelected( false );
                    checkAllCheckbox.setIndeterminate( false );
                } else {
                    checkAllCheckbox.setIndeterminate( true );
                }

                multiselectChangeOngoing = false;
            } );
        } );
    } );
}() );