taking control of the client side apex javascript apis€¦ · thank you twitter: @j_snyders blog:...
TRANSCRIPT
Taking Control of the Client SideAPEX JavaScript APIs
John Snyders
Consulting Member of Technical StaffOracle Application Express Development TeamDecember 2019#orclapex
Copyright © 2019 Oracle and/or its affiliates.
John Snyders
Focus Area: JavaScriptProjects: Faceted Search, New Popup LOV, Interactive Grid, Page Designer, JavaScript WidgetsTwitter: @J_SnydersBlog: http://hardlikesoftware.com
Copyright © 2019 Oracle and/or its affiliates.
At Oracle since 2008 (WebLogic)Joined APEX Team in 2012
Agenda
• Setting the stage• Concepts and tour of the JavaScript APIs• Example with code walk through• Q&A
Copyright © 2019 Oracle and/or its affiliates.
Low Code to Full Control; the value of APEX
• Focused optimized core vs. Supporting functionality• Stock vs. Custom pages• Declarative vs. Imperative• In many cases just a few lines of JavaScript is all that is needed
Copyright © 2019 Oracle and/or its affiliates.
API Tour
Copyright © 2019 Oracle and/or its affiliates.
New in 19.2 (1)
• Actions: apex.actions.getKeyCaps, apex.actions.setKeyCaps– new key names: Keypad =, Keypad Clear, F13-F15– pWithMarkup added to actions.listShortcuts and actions.shortcutDisplay methods
• grid widget options allowSelectHidden, skipReadonlyCells• new method finishEditing added to grid, recordView and
tableModelView• Missing: grid refresh, model moveRecords and transform• Menu widget new option callout.
Copyright © 2019 Oracle and/or its affiliates.
New in 19.2 (2)
● grid widget option collapsibleControlBreaks (19.1 but not in release notes)
● iconList widget new options noNavKeyContent, tabbableContent● tableModelView widget new option constrainNavigation● interactiveGridView properties cssClass, icon, singleRowMode, and
singleRowView$ are now documented. InteractiveGridView method getContextRecord is now documented.
Copyright © 2019 Oracle and/or its affiliates.
Namespace
● Keeps names from colliding● Its just an object● Ideally one global symbol per library: apex● Object with properties that are functions● Can also have properties that are not functions● Property can be an object which is a sub namespace: apex.util
Copyright © 2019 Oracle and/or its affiliates.
Interface
● Somewhat like a class in OO programming● “Maker” functions return an object that implements an interface● Object with properties● When the property value is a function we call it a method of the
interface● var myRegion = apex.region("myRegion");
Copyright © 2019 Oracle and/or its affiliates.
Widget
● Specifically a jQuery UI widget– https://api.jqueryui.com/jQuery.widget/
● Programmatic access to a UI control● Widgets have state● $(selector).widgetName("methodName", ...args);
Copyright © 2019 Oracle and/or its affiliates.
APEX Actions
Copyright © 2019 Oracle and/or its affiliates.
State+
Behavior
ButtonMenu itemCheckbox/radio/selectKeyboard shortcut
2-way
binding
Model View Separation
Copyright © 2019 Oracle and/or its affiliates.
MyView
My ModelMy Model
apex.model
AnotherViewajax requests to serverfor data
Presentation
Data
ViewX
ModelX
Example
Copyright © 2019 Oracle and/or its affiliates.
Questions?
Copyright © 2019 Oracle and/or its affiliates.
Resources
• Custom Menus http://hardlikesoftware.com/weblog/2015/07/13/apex-5-0-custom-menus/
• Media List Mega Menu http://hardlikesoftware.com/weblog/2018/05/03/apex-media-list-mega-menu/
• More Menu Fun http://hardlikesoftware.com/weblog/2019/03/02/more-apex-menu-fun/
• Keyboard Shortcuts http://hardlikesoftware.com/weblog/2015/04/19/apex-5-0-and-keyboard-shortcuts/
• Menu Widget API https://docs.oracle.com/en/database/oracle/application-express/19.2/aexjs/menu.html
Copyright © 2019 Oracle and/or its affiliates.
Thank You
Twitter: @J_SnydersBlog: http://hardlikesoftware.com
Copyright © 2019 Oracle and/or its affiliates.