Victor Rasputnis

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The goal of this article is to give you a brief overview of some of the objects from clear.swc, which is a part of the open source Clear Toolkit framework available at https://sourceforge.net/projects/cleartoolkit. Component library clear.swc includes a number of enhanced Flex components that software engineers of Farata Systems have been developing and using during the last three years in many enterprise projects. To better understand brief explanations given in this document, we strongly recommend to check out the source code from Sourceforge CVS repository and examine the source code of the classes mentioned below. The ChangeObject Class If you are familiar with LCDS, you know that Data Managemet Services use  ChangeObject, which is a special DTO that is used to propagate the changes between the server and the client.  Our component also includes such object but... (more)

HyperText Objects or the PowerBuilder VM Anywhere

Let's face it: we would love to put our PowerBuilder systems on the Web. As the industry trend is to make every new project "Web-enabled," our PB applications have already acquired the word "legacy" in front of them. With the current efforts to enable remote access and enterprise security, the traditional client/server systems that assumed a concentrated users base in one area are becoming a thing of the past. We all know the cost of serving our users off the Web: the full-blown redesign of "legacy" systems. This redesign is partially related to the repartitioning of the former t... (more)

Rich Internet Applications with Adobe Flex 2 and Java

A typical Java developer knows that when you need to develop a GUI for a Java application, Swing is the tool. Eclipse SWT also has a number of followers, but the majority of people use Java Swing. For the past 10 years, it was a given that Swing development wouldn't be easy; you have to master working with the event-dispatch thread, GridBaglayout, and the like. Recently, the NetBeans team created a nice GUI designer called Matisse, which was also ported to MyEclipse. Prior to Matisse, JBuilder had the best Swing designer, but it was too expensive. Now a good designer comes with N... (more)

Working with Large Applications

In this excerpt from our book, Rich Internet Applications, we'll cover how to set up large applications intended for Web or, more broadly speaking, distributed deployment. As an example let's consider an enterprise application that consists of hundreds of screens, reports, forms, and dashboards. Accordingly, about a dozen engineers specializing in GUIs, frameworks, data layers, and business domains are working on this application in parallel. Every application "run" in Flex Builder as well as the invocation of the application's MXML file processed by the Web-tier Flex compiler r... (more)

Adobe Flex 2: Advanced DataGrid

In any GUI tool, one of the most popular components is the one that shows data in a table format like JTable in Java or Datawindow in PowerBuilder. The Adobe Flex 2 version of such a component is called DataGrid. In any UI framework, the robustness of such a component depends on formatting and validating utilities as well as a whole suite of data input controls: CheckBoxes, ComboBoxes, RadioButtons, all sorts of Inputs, Masks, and so on. Using theatrical terminology, the role of the king is played by his entourage. Practically speaking, touching up the DataGrid is touching up a ... (more)