server/core/js/setup.js

var dbtypes;
$(document).ready(function() {
	dbtypes={
		sqlite:!!$('#hasSQLite').val(),
		mysql:!!$('#hasMySQL').val(),
		postgresql:!!$('#hasPostgreSQL').val(),
		oracle:!!$('#hasOracle').val()
	};

	$('#selectDbType').buttonset();
	// change links inside an info box back to their default appearance
	$('#selectDbType p.info a').button('destroy');

	if($('#hasSQLite').val()){
		$('#use_other_db').hide();
		$('#use_oracle_db').hide();
	} else {
		$('#sqliteInformation').hide();
	}
	$('#adminlogin').change(function(){
		$('#adminlogin').val($.trim($('#adminlogin').val()));
	});
	$('#sqlite').click(function() {
		$('#use_other_db').slideUp(250);
		$('#use_oracle_db').slideUp(250);
		$('#sqliteInformation').show();
		$('#dbname').attr('pattern','[0-9a-zA-Z$_-]+');
	});

	$('#mysql,#pgsql').click(function() {
		$('#use_other_db').slideDown(250);
		$('#use_oracle_db').slideUp(250);
		$('#sqliteInformation').hide();
		$('#dbname').attr('pattern','[0-9a-zA-Z$_-]+');
	});

	$('#oci').click(function() {
		$('#use_other_db').slideDown(250);
		$('#use_oracle_db').show(250);
		$('#sqliteInformation').hide();
		$('#dbname').attr('pattern','[0-9a-zA-Z$_-.]+');
	});

	$('#showAdvanced').click(function(e) {
		e.preventDefault();
		$('#datadirContent').slideToggle(250);
		$('#databaseBackend').slideToggle(250);
		$('#databaseField').slideToggle(250);
	});
	$("form").submit(function(){
		// Save form parameters
		var post = $(this).serializeArray();

		// Show spinner while finishing setup
		$('.float-spinner').show(250);

		// Disable inputs
		$(':submit', this).attr('disabled','disabled').val($(':submit', this).data('finishing'));
		$('input', this).addClass('ui-state-disabled').attr('disabled','disabled');
		// only disable buttons if they are present
		if($('#selectDbType').find('.ui-button').length > 0) {
			$('#selectDbType').buttonset('disable');
		}
		$('.strengthify-wrapper, .tipsy')
			.css('-ms-filter', '"progid:DXImageTransform.Microsoft.Alpha(Opacity=30)"')
			.css('filter', 'alpha(opacity=30)')
			.css('opacity', 0.3);

		// Create the form
		var form = $('<form>');
		form.attr('action', $(this).attr('action'));
		form.attr('method', 'POST');

		for(var i=0; i<post.length; i++){
			var input = $('<input type="hidden">');
			input.attr(post[i]);
			form.append(input);
		}

		// Add redirect_url
		var redirectURL = getURLParameter('redirect_url');
		if (redirectURL) {
			var redirectURLInput = $('<input type="hidden">');
			redirectURLInput.attr({
				name: 'redirect_url',
				value: redirectURL
			});
			form.append(redirectURLInput);
		}

		// Submit the form
		form.appendTo(document.body);
		form.submit();
		return false;
	});

	// Expand latest db settings if page was reloaded on error
	var currentDbType = $('input[type="radio"]:checked').val();

	if (currentDbType === undefined){
		$('input[type="radio"]').first().click();
	}

	if (
		currentDbType === 'sqlite' ||
		(dbtypes.sqlite && currentDbType === undefined)
	){
		$('#datadirContent').hide(250);
		$('#databaseBackend').hide(250);
		$('#databaseField').hide(250);
		$('.float-spinner').hide(250);
	}

	$('#adminpass').strengthify({
		zxcvbn: OC.linkTo('core','vendor/zxcvbn/dist/zxcvbn.js'),
		titles: [
			t('core', 'Very weak password'),
			t('core', 'Weak password'),
			t('core', 'So-so password'),
			t('core', 'Good password'),
			t('core', 'Strong password')
		],
		drawTitles: true,
		nonce: btoa(OC.requestToken),
	});

	// centers the database chooser if it is too wide
	if($('#databaseBackend').width() > 300) {
		// this somehow needs to wait 250 milliseconds
		// otherwise it gets overwritten
		setTimeout(function(){
			// calculate negative left margin
			// half of the difference of width and default bix width of 300
			// add 10 to clear left side padding of button group
			var leftMargin = (($('#databaseBackend').width() - 300) / 2 + 10 ) * -1;

			$('#databaseBackend').css('margin-left', Math.floor(leftMargin) + 'px');
		}, 250);
	}
});