New Features of ZK 9.5.0"
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Redirects (HTTP 302) including SSO handling has always been a common challenge in Ajax. In 9.5 the fetch( ) API is used instead of XHR allowing better redirect handling. | Redirects (HTTP 302) including SSO handling has always been a common challenge in Ajax. In 9.5 the fetch( ) API is used instead of XHR allowing better redirect handling. | ||
| − | = | + | = Client API supports scrollIntoView and focus using selector = |
| − | + | With this new feature, developers can now use selector to focus or scrollIntoView on the client side. (Benefits .. or previous challenges?..) | |
= Listbox Enhancements = | = Listbox Enhancements = | ||
Revision as of 06:14, 22 September 2020
Hawk Chen, Engineer, Potix Corporation
Sep. 22, 2020
ZK 9.5.0
Introduction
In ZK 9.5, we focus on User Experience and Developer Experience. Therefore, we pay lots of effort to make components
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Web Accessibility Support
We are excited to announce a preview version of the za11y (ZK Accessibility) package for WCAG 2 compliance. Various enhancements have been made on ZK components for keyboard interaction (focus, navigation order, …) and screen reader support (aria-labels, roles, …). In addition, accessibility-ready themes are made available for providing sufficient color contrast and focus style.
Check out the ZA11Y Demo Project.
Learn more about ZK Accessibility and WCAG themes.
Components
Data Binding Syntax Sugar
ZK now provides a simplified syntax with a built-in convention. You can type fewer characters when applying data binding and speed up your development.
Default ViewModel ID
Default ViewModel ID is vm without explicitly specified.
<!-- original syntax -->
<div viewModel="@id('vm') @init('MyViewModel')" >
<!-- new syntax -->
<div viewModel="@('MyViewModel')">
It also saves you some effort when using property binding.
<!-- original syntax -->
<label value="@load(vm.name)"/>
<!-- new syntax -->
<label value="@load(name)"/>
Implicit Init Binding
Now you can apply an init property binding without specifying "init".
<!-- original syntax -->
<label value="@init(vm.greeting)"/>
<!-- new syntax -->
<label value="@(vm.greeting)"/>
<label value="@(greeting)"/>
Implicit Command Binding
Now ZK will create a command binding at an event attribute (starting with on) by default without specify command explicitly.
<!-- original syntax -->
<button onClick="@command('hello')"/>
<!-- new syntax -->
<button onClick="@('hello')"/>
Command Binding Parameter Inference
When passing parameters to a command method, you don't need to specify a key now. ZK can infer each parameter according to its order.
<!-- original syntax -->
<button onClick="@command('hello')"/>
<!-- new syntax -->
<button onClick="@('hello')"/>
Theme Template Supports Compact Themes
ZK Theme Template provides an easy way for theme customization. It is now updated to support compact themes — you can now customize a compact theme (ex. iceblue_c) as easy as the standard themes, and upgrade the theme easily when you upgrade your ZK version.
Backward Compatibility: ZK 7 Form Binding
In ZK 8 a new MVVM form binding was introduced which made it difficult for ZK 7 projects to upgrade. In ZK 9.5 we have now ported back ZK 7’s simple form binding. If you have ZK 7 projects that use the legacy simple form binding, you can easily upgrade to ZK 9.5 with minimum code changes.
AJAX/WebSocket
[ZK-4175] - replace XHR with the fetch() API to allow SSO redirect handling [ZK-4451] - iOS 13 cause iPad to set "request desktop mode" for all website by default [ZK-4530] - Provide a "heart beat"/"ping pong" mechanism for websocket connections [ZK-4546] - Caching of EL method invocations [ZK-4562] - Introduce OWASP Dependency-Check
Introducing fetch( ) API for Redirection/SSO handling
Redirects (HTTP 302) including SSO handling has always been a common challenge in Ajax. In 9.5 the fetch( ) API is used instead of XHR allowing better redirect handling.
Client API supports scrollIntoView and focus using selector
With this new feature, developers can now use selector to focus or scrollIntoView on the client side. (Benefits .. or previous challenges?..)
Listbox Enhancements
Listbox is one of the most commonly used components. It is complicated in the way that it provides a table view with selection, frozen, paging, ROD, auto-sizing and many custom attributes. In ZK 9.5 we have made several enhancements to cover a wider range of use cases.
- Fixed listbox sizing issue with "rows" attribute
- Listbox model now supports an array of class
- Fixed broken ROD popup & JS error during partial invalidate
- Refine the selection behavior when part of the items are selected
iOS13+ Support
Apple has changed the implementation and now an iOS13 device no longer identifies itself with the iOS Safari User Agent (UA) string, but with the MacOS Safari one instead. Corresponding changes have been made in ZK 9.5 to ensure ZK detects the devices correctly.
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