Lightning allows developers to customize their apps to a degree not previously possible - especially when using the Lightning App Builder and the new Lightning Utility Bar. In this webinar, we will introduce you to best practices for designing component-based architecture when building advanced apps that make the most out of new Lightning Experience features.

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5. Agenda
1. Advanced Apps for Lightning Experience
2. Lightning Component Architecture
3. Lightning Utility Bar
4. Designing for Performance

6. Advanced Apps for Lightning
Experience

8. Let’s define the scope…
 Native, built from the ground-up for Lightning Experience
 Some functionality exposed in Salesforce1
 Combines declarative and programmatic elements
 Does not conform to 80% declarative / 20% programmatic
 UX driven mostly by custom Lightning Components
 Customised using declarative tools (e.g. App Builder, Metadata, Utility Bar)
 Examples:
 Significant customisation of Sales Cloud
 Horizontal apps such as HR, Accounting
 Vertical apps such as Insurance, Retail, Public Sector

9. What is an Advanced Lightning App?
 Designed from the ground-up for Lightning Experience
- Some functionality exposed in Salesforce1
 Combines declarative and programmatic elements
- Does not conform to 80% declarative / 20% programmatic
- UX driven mostly by custom Lightning Components
- Customised using declarative tools (e.g. App Builder, Metadata, Utility Bar)
 Examples:
- Significant customisation of Sales Cloud
- Horizontal apps such as HR, Accounting
- Vertical apps such as Real Estate, Insurance, Retail, Public Sector

10. How can I design
this app?

11. Lightning toolkit
Declarative Programmatic
Lightning Apps
Lightning Pages
Lightning Utility Bar
Lightning Actions
Tabs
+
Metadata (Custom Objects, CMT)
Data Model
Security Model
Standard Events
Base/Standard Lightning Components
Custom Lightning Components/Events
Lightning Design System
Lightning Data Service
+
Visualforce
Apex/SOQL/SOSL/APIs

12. Lightning Component Architecture

13. Lightning Component Architecture
Purpose Markup Comments
Service Components
Extended/used by other
components
Handle server calls
Shared code base
Minimal Extensible = true
Helper Components
Event interaction
Metadata caching
Minimal When applicable
Building Block
Components
Implement UX
functionality at different
levels of granularity
Base Lightning Components
Lightning Design System
Building Block
Components/Content
Majority of code
Experience
Components
Available in App Builder /
AppExchange for
Components
Building Block
Components/Content
Simple:
Lightning Data Service
Advanced:
Dynamic if applicable
Potentially metadata-driven

14. Lightning Components – Release Roadmap
Release Theme Components
Spring ‘17 Adding depth to single
record foundational
components
Eg: avatar,
inputSearch,
inputSelect, picklist,
inputRichText, tile, pill,
modal and notification
Summer ‘17 Introducing experience
and databound
components
Eg: inputField,
outputField, list, lookup

15. Service Component: Example
<aura:component description=”ServiceComponent" extensible="true">
<div>{!v.body}</div>
</aura:component>
callToServer function:
Parameters:
Name of Apex @AuraEnabled Method
Method Parameters
Action properties:
setAbortable()
setStorable() + ignoreExisting
setBackground()
Fires $A.enqueueAction(), defines callback function
Component Markup
Client-side Helper

16. Service Component: Example
<c:ServiceComponent/> <c:UtilityBarMenu/> UtilityBarController
UtilityBarConfig__c
<c:CardListView/> CardListViewController
Account Opportunity Custom__c
Apex
+
SOQL
Dynamic
Apex
+
SOQL
extends c:serviceComponent
extends c:serviceComponent

17. Example Experience Components

18. Designing a custom Experience Component

19. Dynamic, metadata-driven Components
 Support your own use cases
 When possible support any SObject
 Maximise code reusability
 Simplify component logic
 Providing admins with a greater degree of
flexibility…
 ... while simplifying App Builder experience Field to filter on
Standard actions available
Lightning actions available
Columns to display
SOQL query
Card List View title
Number of rows
Enable pagination
Reference to metadata record
Metadata:
App Builder attributes:

20. Component Tree: custom Card List View
<c:CardListView/>
<c:Header/> <c:Table/> <c:Footer/>
<c:GenericListView/>
<c:TableData/>
<c:OutputField/>
<c:OutputField/>
<c:OutputField/>
<lightning:buttonMenu/>
<lightning:buttonMenu/>
<lightning:buttonMenu/>
<lightning:(…)/><ui:(…)/> <c:Action/>
<lightning:buttonGroup/> <c:Pagination/>
App Builder
Attributes (incl.
Metadata reference)
Which type of list
view?
Handle UI events
What data to render?
Which actions?
Renders data and
actions
Record selection
Render filters?
Which mass actions?
Display and fire mass
actions
Display and fire
record-level actions
Links e.g.
Visualforce, Record
Home Page
Render pagination?
Or link to list view?
Display and fire
pagination events
Component event
bubbles up, handled,
pagination attributes
updated

21. How do I fire
platform actions?

22. Firing Platform Actions
 Which actions to display?
Metadata – pre-selected actions
Display all available actions for SObject in specific context
 Query PlatformAction object to obtain action type e.g.:
Action Type Examples Implementation
Standard Action View, Edit Fire createRecord, editRecord event
Visualforce Action E-mail PDF CV Fire force:navigateToURL event
Lightning Action Reject Candidate
Display Modal, inject Lightning Component, pass
appropriate parameters

23. Lightning Utility Bar

24. Utility Bar Overview
 Always available
 Unique per app
 Flexipage containing a number of Lightning
Components – Standard or custom
 Customisable via UI (Spring ‘17)
 Component Properties:
Height + Width
Icon + Label
Background Load

25. Dynamic Content in the Utility Bar
<c:UtilityBarMenu/> UtilityBarController
UtilityBarConfig__c
Menu
Metadata
Handles c:PageChanged events
<c:CardListView/>
<c:PageChanged/>
Application Event
On click
Containing e.g. help
button

26. Designing for Performance

27. SOQL Queries Limit
 Typical of chatty custom Experience Components
 Cause:
Calls to server on init are aggregated into same Apex transaction
 Mitigation:
Use Lightning Data Service when possible
Use cached data (for static data/metadata)
Leverage Custom Metadata Types
 Do not count against SOQL Limits
Use setBackground() on calls to server
 Calls processed separately, designed for lower priority calls but generally processed quickly
Chain component loading by groups
 Last component to load in a group fires application event to load 2nd group – and so on

28. Performance Best Practices
 Enable Secure Cache and LockerService
 Disable Lightning Components debugging
 Use Lightning Data Service when possible
 Lazy load when appropriate
 Load data upon user intervention (e.g. click)
 Pre-load when possible
 Load data in background (especially static data)
 Use setStorable() on calls to server
 Local cache provides recent copy of data. Separate call to server takes place to obtain refreshed
copy
 Implement data store for metadata/data that remains static

29. Demo

30. New York City
December 15, 2016
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