articles: 120

This data as json

rowid	title	contents	year	author	author_slug	published	url	topic
120	Easier Page States for Wireframes	When designing wireframes for web sites and web apps, it is often overlooked that the same ‘page’ can look wildly different depending on its context. A logged-in page will look different from a logged-out page; an administrator’s view may have different buttons than a regular user’s view; a power user’s profile will be more extensive than a new user’s. These different page states need designing at some point, especially if the wireframes are to form a useful communication medium between designer and developer. Documenting the different permutations can be a time consuming exercise involving either multiple pages in one’s preferred box-and-arrow software, or a fully fledged drawing containing all the possible combinations annotated accordingly. Enter interactive wireframes and Polypage Interactive wireframes built in HTML are a great design and communication tool. They provide a clickable prototype, running in the browser as would the final site. As such they give a great feel for how the site will be to use. Once you add in the possibilities of JavaScript and a library such as jQuery, they become even more flexible and powerful. Polypage is a jQuery plugin which makes it really easy to design multiple page states in HTML wireframes. There’s no JavaScript knowledge required (other than cutting and pasting in a few lines). The page views are created by simply writing all the alternatives into your HTML page and adding special class names to apply state and conditional view logic to the various options. When the page is loaded Polypage automatically detects the page states defined by the class names and creates a control bar enabling the user to toggle page states with the click of a mouse or the clack of a keyboard. Using cookies by way of the jQuery cookie plugin, Polypage retains the view state throughout your prototype. This means you could navigate through your wireframes as if you were logged out; as if you were logged in as an administrator; with notes on or off; or with any other view or state you might require. The possibilities are entirely up to you. How does it work? Firstly you need to link to jQuery, the jQuery cookie plugin and to Polypage. Something like this: <script src="javascripts/jquery-1.2.6.min.js" type="text/javascript"></script> <script src="javascripts/cookie.jquery.js" type="text/javascript"></script> <script src="javascripts/polypage.jquery.js" type="text/javascript"></script> Then you need to initialise Polypage on page load using something along these lines: <script type="text/javascript"> $(document).ready(function() { $.polypage.init(); }); </script> Next you need to define the areas of your wireframe which are particular to a given state or view. Do this by applying classes beginning with pp_. Polypage will ignore all other classes in the document. The pp_ prefix should be followed by a state name. This can be any text string you like, bearing in mind it will appear in the control bar. Typical page states might include ‘logged_in’, ‘administrator’ or ‘group_owner’. A complete class name would therefore look something like pp_logged_in. Examples If a user is logged in, you might want to specify an option for him or her to sign out. Using Polypage, this could be put in the wireframe as follows: <a href="logout" class="pp_logged_in"> Sign out </a> Polypage will identify the pp_logged_in class on the link and hide it (as the ‘Sign out’ link should only be shown when the page is in the ‘logged in’ view). Polypage will then automatically write a ‘logged in’ toggle to the control bar, enabling you to show or hide the ‘Sign out’ link by toggling the ‘logged in’ view. The same will apply to all content marked with a pp_logged_in class. States can also be negated by adding a not keyword to the class name. For example you might want to provide a log in link for users who are not signed in. Using Polypage, you would insert the not keyword after the pp prefix as follows: <a href="login" class="pp_not_logged_in"> Login </a> Again Polypage identifies the pp prefix but this time sees that the ‘Login’ link should not be shown when the ‘logged in’ state is selected. States can also be joined together to add some basic logic to pages. The syntax follows natural language and uses the or and and keywords in addition to the afore-mentioned not. Some examples would be pp_logged_in_and_admin, pp_admin_or_group_owner and pp_logged_in_and_not_admin. Finally, you can set default states for a page by passing an array to the polypage.init() function like this: $.polypage.init(['logged_in', 'admin']); You can see a fully fledged example in this fictional social network group page. The example page defaults to a logged in state. You can see the logged out state by toggling ‘logged in’ off in the Polypage control bar. There are also views specified for a group member, a group admin, a new group and notes. Where can I get hold of it? You can download the current version from GitHub. Polypage was originally developed by Clearleft and New Bamboo, with particular contributions from Andy Kent and Natalie Downe. It has been used in numerous real projects, but it is still an early release so there is bound to be room for improvement. We’re pleased to say that Polypage is now an open source project so any feedback, particularly by way of actual improvements, is extremely welcome.	2008	Richard Rutter	richardrutter	2008-12-11T00:00:00+00:00	https://24ways.org/2008/easier-page-states-for-wireframes/	process