AppViewMasterPageBase

AppViewMasterPageBase is the master-page base class shared by every SAIF application chrome layout in this package. It provides typed accessors for the standard chrome controls (script manager, banner, menu, message/error labels, claim/policy headers, main UpdatePanel) so consuming master pages do not need to FindControl for them, and it owns the client-side focus mechanism that targets the correct DOM selector for whichever Infragistics or standard control type currently holds FocusControl.

Purpose

• Provide typed, discoverable access to the standard SAIF chrome controls instead of requiring each consuming master page to re-declare FindControl calls.
• Determine, on PreRender, whether a FocusControl was set and — if so — emit a client script that focuses it using a selector appropriate to its runtime control type. (BR-CORE-028, BR-CORE-029)
• Wrap the focus call in a defensive try/setTimeout/catch so a missing DOM element never breaks page rendering. (BR-CORE-030)

Context

• Namespace: SAIF.Presentation.Web.Core
• Assembly/package: SAIF.Presentation.Web.Core.Infragistics111 (merged into SAIF.Presentation.Web.Infragistics111.dll via SAIF.BOF.Presentation.Web.Infragistics111.nuspec)

Public members

Member	Signature	Purpose
FocusControl	Public Property FocusControl As Control	The control that should receive client-side focus after the current page render; Nothing when no focus target is set.
ScriptManager1	Public ReadOnly Property ScriptManager1 As ScriptManager	Typed accessor for the master page's ScriptManager chrome control.
Banner	Public ReadOnly Property Banner As BannerControl	Typed accessor for the standard SAIF banner chrome control.
Menu	Public ReadOnly Property Menu As SAIFMenu	Typed accessor for the standard SAIF left/side navigation menu control.
MenuTop	Public ReadOnly Property MenuTop As SAIFMenuTop	Typed accessor for the standard SAIF top navigation menu control.
MessageLabel	Public ReadOnly Property MessageLabel As SAIFMessage	Typed accessor for the standard informational message display control.
ErrorLabel	Public ReadOnly Property ErrorLabel As SAIFMessage	Typed accessor for the standard error message display control.
MainUpdatePanel	Public ReadOnly Property MainUpdatePanel As UpdatePanel	Typed accessor for the master page's primary UpdatePanel, used for partial-postback script registration.
RenderClientScripts()	Protected Overrides Sub RenderClientScripts()	Entry point invoked on PreRender that checks FocusControl and, if set, calls RegisterFocusControlScript.
RegisterFocusControlScript(control)	Protected Sub RegisterFocusControlScript(control As Control)	Builds the control-type-specific client-side selector, wraps it in a defensive try/setTimeout/catch, and registers it as the page's startup script.

Behavioral notes

• When FocusControl is Nothing, RenderClientScripts exits immediately and no focus script is registered at all.
• Selector construction branches on the control's runtime type name: Infragistics WebDataInput (#igtxt<ClientID>), WebCombo (<ClientID with _ → x>_input), WebSchedule.WebDateChooser (<ClientID>_input), Button (focus without select), Infragistics.Web.UI.ListControls (no script emitted), and any other type (#<ClientID> fallback).
• The registered script runs 100ms after load inside try{...}catch(e){}, so a control missing from the rendered DOM at focus time fails silently rather than breaking the page.

Constraints and usage notes

• Consuming master pages must declare controls with the exact IDs expected by the typed accessors (ScriptManager1, Banner, Menu, MenuTop, MessageLabel, ErrorLabel, MainUpdatePanel) for those properties to resolve correctly.
• Infragistics.Web.UI.ListControls types never receive a focus script — callers targeting those types should not rely on FocusControl for them.

Note: Statements marked with * were inferred from code structure, naming conventions, or contextual evidence where direct confirmation was not available in source artifacts. Statements marked with ** could not be confirmed; treat as unknown until verified.

Sources

• SAIF.Presentation.Web.Core.Infragistics111/AppViewMasterPageBase.vb