behavior

I am searching for a possibility to temporarily disable the zooming functionality provided by the d3 library. I tried to save the cave the current scale/translation values when the zooming is deactivated and set the zoom/translate-values when the zooming is active again. Unfortunately this will not work. Here is a code example I created : var savedTranslation = null; var savedScale = null; var body = d3.select("body"); var svg = body.append("svg"); var svgContainer = svg.append("svg:g"); var circle = svgContainer.append("svg:circle") .attr('cx', 100) .attr('cy', 100) .attr('r',30) .attr('fill'

In my CakePHP 1.2.5 app, I have a Profile model that belongsTo a User model. The User model has a username field, and when performing a find() on the Profile model, I want to always automatically retrieve the value of User.username too. I figure it would make sense to modify my Profile model's beforeFind() method to automatically contain the desired field. Here's what I attempted to do: public function beforeFind($queryData) { // determine if the username data was already requested to be included in the return data via 'User.username' or 'User' => array('username'). $hasUserData = isset(

The RFC seems to suggest that the client should permanently cache the response: http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html 10.3.2 301 Moved Permanently The requested resource has been assigned a new permanent URI and any future references to this resource SHOULD use one of the returned URIs. Clients with link editing capabilities ought to automatically re-link references to the Request-URI to one or more of the new references returned by the server, where possible. This response is cacheable unless indicated otherwise. The new permanent URI SHOULD be given by the Location field in

I have been instructed by my professor to introduce myself on a page as if I were an object, and that I must address three things: 1) Object State, 2) Behavior, and 3) Identity. However, I am still really confused as to how I would go about doing something like this. (I have read about the three attributes I must address, but I don't know how I would apply it to a person). For example, I was told a dog would have States, such as name, color, and breed; as well as Behaviors, such as walking, barking, or wagging their tail. So would I do something similar to: Student me = new Student(); System

I'm trying to find some differences between these approaches. Is there any situation where behaviors are used and the same functionality could not be done with attached properties? No. Behaviors are basically just a much nicer abstraction on top of attached properties. By using Behavior<T> , you gain access to the AssociatedObject directly, as well as the ability to attach and detach the behavior, easily, at runtime. You could do this with attached properties, but it would require adding a lot of extra plumbing. I tend to use Behaviors to add functionality which makes visible changes. Whereas

I have an attached behavior to an ItemsControl that scrolls down to the bottom whenever a new item is added. Since I am working on a chat type program, I don't want it to scroll if the user has the scrollbar anywhere other than the very bottom as that would be very annoying otherwise(Some chat programs do this and it's awful). How do I accomplish this? I don't know how to access the wrapping ScrollViewer, or otherwise figure out if I need to bring it into view or not. This is the behavior class that I actually got from someone on StackOverflow. I'm still learning about behaviors myself. public