Seaside Interface to Legacy Smalltalk App

8/7/2019 Seaside Interface to Legacy Smalltalk App

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Bob Nemec

Cherniak Software

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RequirementsProvide a web based interface to existingVW views with minimal additional effortby the domain developer.

A web interface for free.

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A Seaside buildery This is not a general solutiony It uses framework meta data to build Seaside

components

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Buildery Reads the window spec identified by the meta datay Creates a widget component for each type of widgety Each component has the widget s window spec detailsy Framework metadata defines widget behavior

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ButtonCheck boxCombo boxDividerGroup boxInput fieldLabel

NotebookRadio buttonListSubcanvasTableText editor



Container

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y Layout the generated components using the size andposition information in the window spec



Component layout

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Add to new line

Add to a group box

Add to same line



Component layout

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Add tall component

Add to tall row



Widget position and sizey Added convenience methods to Array

y #specElement After:

y #specElement After:if Absent:y Extract origin and corner as offset from parenty Translate proportional values to fixed points

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Adjustmentsy It s easier to have a small adjustment than to make the

layout code perfect

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Dialog promptsy Semaphore handoff to forked process

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Reporting

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Print preview in VW client



Reporting

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Print preview in browser



Reportingy Write output to a Pixmapy Render result in lightbox

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image := pixmap asGif.

image gifBytes seasideMimeDocumentmimeType: Seaside.W AMimeType imageGif

y Full report would be printed to a PDF



Mobile devicesy Simplified views will be used for mobile devicesy Flag is set on launcher entries and window specs

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Diagnostic toolsy Window spec view build window spec from components

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Load balancingy A dispatcher image uses OpenTalk to find idle client imagey A cookie with port number & millisecond clock value is

used to bind session to client image

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Dispatcher

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Client portalsy Using both domain and coded Seaside components

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More Seasidey Issue Libraryy Patch Managery MediaWiki contenty IVR VXML servery iCal servery XML data for MS Office

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Issue Library

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Patch Manager

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MediaWiki content

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{{#webservice:cslx 4.cherniaksoftware.com: 48 197/ Issues?wiki=problems:summary| % // div%}}

{{#webservice:cslx 4.cherniaksoftware.com: 48 197/ Issues?wiki=sidebar| % // div%}}



IVR VXML Server

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Next stepsy Lots of javascripty Mobile devices

y Integration with client web sites

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Thank you to everyone that has contributed to Seaside

Documents

Seaside Interface to Legacy Smalltalk App