Apex Reference Guide

Apex Reference Guide
Release Notes
Apex DML Operations
ApexPages Namespace
AppLauncher Namespace
Approval Namespace
Auth Namespace
Cache Namespace
Canvas Namespace
ApplicationContext Interface
CanvasLifecycleHandler Interface
ContextTypeEnum Enum
EnvironmentContext Interface
RenderContext Interface
RenderContext Methods
getApplicationContext()
getEnvironmentContext()
Test Class
Canvas Exceptions
ChatterAnswers Namespace
CommerceBuyGrp Namespace
CommerceExtension Namespace
CommerceOrders Namespace
CommercePayments Namespace
CommerceTax Namespace
commonserviceexcellence Namespace
ComplianceMgmt Namespace
Compression Namespace
ConnectApi Namespace
Context Namespace
Database Namespace
Datacloud Namespace
DataRetrieval Namespace
DataSource Namespace
DataWeave Namespace
Dom Namespace
embeddedai Namespace
EventBus Namespace
ExternalService Namespace
Flow Namespace
Flowtesting Namespace
flowuiruntime Namespace
FormulaEval Namespace
disputemanagement Namespace
fsccashflow Namespace
fsccomplaintmanagement Namespace
fschousehold Namespace
fscserviceprocesses Namespace
fscwmgen Namespace
industriespersonalizedfinance Namespace
Functions Namespace
ise_bots_apex Namespace
IssueCreditMemo Namespace
ind_mfg_sample_mgmt_apex Namespace
industriesNlpSvc
IndustriesDigitalLending Namespace
Invocable Namespace
InvoiceWriteOff Namespace
IsvPartners Namespace
KbManagement Namespace
LxScheduler Namespace
Messaging Namespace
Metadata Namespace
PlaceQuote Namespace
Pref_center Namespace
Process Namespace
QuickAction Namespace
renew_assets_summary Namespace
Reports Namespace
RevSignaling Namespace
RevSalesTrxn Namespace
RichMessaging Namespace
RulesAppln Namespace
runtime_industries_cpq Namespace
runtime_industries_insurance Namespace
Schema Namespace
Search Namespace
setup_flow_performance Namespace
Sfc Namespace
Sfdc_Checkout Namespace
Sfdc_Enablement Namespace
sfdc_surveys Namespace
sfdw Namespace
sfsqlquery Namespace
Site Namespace
Slack Namespace
Support Namespace
System Namespace
TerritoryMgmt Namespace
TxnSecurity Namespace
UserProvisioning Namespace
VisualEditor Namespace
Wave Namespace
Appendices
PDF

Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

getApplicationContext()

Retrieves the application context information.

Signature

public Canvas.ApplicationContext getApplicationContext()

Return Value

Type: Canvas.ApplicationContext

Usage

Use this method to get the application context information for your canvas app.

Example

The following example implementation of the CanvasLifecycleHandler onRender() method uses the provided RenderContext to retrieve the application context information and then checks the namespace, version, and app URL.

1public void onRender(Canvas.RenderContext renderContext){
2    Canvas.ApplicationContext app = renderContext.getApplicationContext();
3    if (!'MyNamespace'.equals(app.getNamespace())){
4        // This application is installed, add code as needed
5        ...
6    }
7
8    // Check the application version
9    Double currentVersion = Double.valueOf(app.getVersion());
10
11    if (currentVersion <= 5){
12        // Add version specific code as needed
13        ...
14        // Tell the canvas application to operate in deprecated mode
15        app.setCanvasUrlPath('/canvas?deprecated=true');
16    }
17}