New Features of ZK 9.5.0"
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== Init ViewModel Shortcut== | == Init ViewModel Shortcut== | ||
− | You can apply a ViewModel on a component in a shorter way. Then, ZK | + | You can apply a ViewModel on a component in a shorter way. Then, ZK will assign a default ViewModel ID as '''<tt>vm</tt>''' without having to explicitly specify it. Also you no longer need to specify "init". |
<source lang='xml'> | <source lang='xml'> |
Revision as of 04:48, 25 September 2020
Hawk Chen, Engineer, Potix Corporation
Sep. 22, 2020
ZK 9.5.0
Introduction
ZK is a tool created by developers, for developers. In ZK 9.5 we put our first priority on advancing the DX - Developer Experience - by providing a smoother upgrade path, simplified MVVM syntax and usages, easier theme & component customization, among others.
In addition a preview version enabling web accessibility support has been released with keyboard navigation, screen reader support, high contrast themes and other features facilitating WCAG2 compliance.
Enjoy, and we look forward to receiving your feedback.
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Web Accessibility Support
- Available for ZK:
-
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.
Data Binding Syntax Sugar and Simplified Usage
- Available for ZK:
-
ZK now provides a simplified syntax with a built-in convention. Shortened syntax and conventions make it easier to code and speed up your development.
Init ViewModel Shortcut
You can apply a ViewModel on a component in a shorter way. Then, ZK will assign a default ViewModel ID as vm without having to explicitly specify it. Also you no longer need to specify "init".
<!-- original syntax -->
<div viewModel="@id('vm') @init('MyViewModel')" >
<!-- shortcut syntax -->
<div viewModel="@('MyViewModel')">
Implicit Init Binding
Now you can apply an init property binding without specifying "init".
<!-- original syntax -->
<label value="@init(vm.greeting)"/>
<!-- shortcut syntax -->
<label value="@(vm.greeting)"/>
For other bindings e.g. @load, @bind, you have to specify it explicitly.
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')"/>
<!-- shortcut syntax -->
<button onClick="@('hello')"/>
Besides, no need to apply @Command on a command method.
// original usage
@Commnad
@NotifyChange("name")
public void hello(){
...
}
// simplified usage
@NotifyChange("name")
public void hello(){
...
}
Command Binding Parameter Inference
Now you can declare a command method without @BindingParam:
//original usage
public void pick(@BindingParam("checked") boolean isPicked,
@BindingParam("picked")Item item){...}
//simplified usage
public void pick( boolean isPicked, Item item){...}
When passing parameters to that command method above, you don't need to specify a key now. ZK can infer each parameter according to its order and type.
<!-- original syntax -->
<checkbox onCheck="@command('pick', checked=self.checked, picked=each)">
<!-- shortcut syntax -->
<checkbox onCheck="@command('pick',self.checked, each)">
For running examples, please check MVVM example project.
Theme Template Supports Compact Themes
- Available for ZK:
-
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 (e.g. iceblue_c) as easy as the standard themes, and upgrade the theme easily when you upgrade your ZK version.
Components
Radio/Checkbox Status CSS Class
- Available for ZK:
-
Radio/Checkbox both have CSS class applied on them according to their status. Therefore, you can apply custom style easily.
.z-checkbox-on{...}
.z-checkbox-off{...}
.z-radio-on{...}
.z-radio-off{...}
Specify Another Reference Component
In the previous version, when you associate a popup to a component, that component is always the reference component to show a popup. Now you can specify another component as a reference component with ref=component-id.
For example, you associate a popup to a button but you want to show a popup at a textbox:
<textbox id="address" placeholder="target address" style="margin-bottom: 30px; display:block"/>
<button label="show more" popup="pp, ref=address, position=end_after"/>
<popup id="pp">
more info
</popup>
Other popup options, please refer to [1]
Searchbox Easy Clear
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.
Notification Style Updated
The Notification style for Iceblue, Iceblue_c and ThemePack Themes are updated to a modern look and feel while providing the requested contrast level for WCAG compliance. (TODO: add screenshots for old and new style)
9.5.0
9.1.0
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.
- Since 9.5.0, the transitive dependency of slf4j-jdk14 was removed. Please specify your preferred logger instead.
- Since 9.5.0, the transitive dependency of closure-compiler-unshaded was removed. If you wish to enable source maps, please include it manually.
- zAu.onError API was changed since fetch() API is now used instead of XHR.
- Due to ZK-4622, the DIV of grid/listbox/tree header border is removed. You may need to adjust the styles accordingly.
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