![]() ![]() In Flex 4.5 we improved the BitmapImage graphic element and added a new Spark Image component. This is a lightweight, non-skinnable UI element that can be used to display image content. Spark Image and BitmapImage enhancementsįlex 4 introduced the BitmapImage graphic element. ![]() To learn more about the Form container and its API's, please refer to the Spark Form specification here. You can read about the new Spark Form container in more detail by reading the feature specification on the Flex open source site. Thus the state of the Form when a required form item has been omitted or when a form item is in an invalid state can be customized declaratively by modifying the Form or FormItem's skin. All of these configurations are customizable via the Form's skinning contract. Spark Forms provide configuration options which can be used to align form item content along a common baseline, to mark form items as required and to list form items sequentially. Both layouts support form columns being defined with pixel sizes as well as percentage sizes. Spark Form ships two layouts, the default layout being a horizontal laying out of form items (see Figure 2) and the second layout being a stacked layout where form items are arranged vertically (see Figure 3). Form columns and rows can grow and shrink at runtime to support modern form designs where information, like help text or validation errors, can be shown on-demand. Additionally, the layout allows for the form columns and rows to be very dynamic. Spark Form uses a grid-based constraint layout for positioning each FormItem element. The biggest improvement to Spark Form over the MX Form is the maturity of its layout. The Spark Form container provides much of the same functionality as the MX Form while also adding several improvements that cater to more modern form designs. The accessible nature of the Spark DataGrid is covered in a separate specification. To learn more details about the new DataGrid and all its facilities, please refer to the Spark DataGrid >specification. Some of the advanced features of the Spark DataGrid include full support for cell editing as well as performance optimizations such that the Spark DataGrid exceeds the MX DataGrid with respect to startup time, horizontal scrolling and vertical scrolling. The Spark DataGrid also allows for basic user navigation through the keyboard or mouse and is fully accessible. Additionally, the Spark DataGrid allows users to select individual cells or multiple cells as part of the default selection behavior. Like the MX DataGrid, single and multiple row selection is enabled (both contiguously and non-contiguously). The salient features of the Spark DataGrid include: a new skinning contract which allows the DataGrid's subparts to be customized declaratively via the DataGrid skin file including cells and column headers, full support for a dynamically changing data provider along with fixed and variable row sizes, advanced communication between the DataGrid column headers and table area including column sorting, formatting of data values and column resizing as well as full selection support. This article aims to introduce you to the variety of new features available in the Flex 4.5 SDK release and provide you with additional resources and documentation such that you can start building applications leveraging the Flex 4.5 framework. Make incremental improvements to core Flex infrastructure to ease large application development.Further mature the Spark architecture and component set which was introduced in Flex 4.Allow developers to use Flex for multiscreen application development.With the Adobe Flex 4.5 SDK release, we are introducing three major initiatives: Flex 4.5 SDK delivers many exciting new components and capabilities, along with integrated support in Flash Builder 4.5 and Flash Catalyst CS 5.5. An update to Flash Builder 4.5 and Flex 4.5 adds support for building Flex applications for BlackBerry Tablet OS and Apple iOS.įlex is ready to take a big leap forward with its next release, Flex 4.5 SDK. Note: Flash Builder 4.5 provides support for building Flex and ActionScript applications for Google Android, as well as support for building ActionScript applications for BlackBerry Tablet OS and Apple iOS. ![]()
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