documentation.HELP! LANSA Web Functions Documentation

9 1 Introduction to Web Components

LANSA Web Functions

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9.1 Introduction to Web Components

In order to understand what Web components are and how they are used, review the following:

9.1.1 What are Web Components?

9.1.2 Web Component Architecture

9.1.3 Web Component Example

9.1.4 Types of Web Components

9.1.5 Web Components and Modes

9.1.6 Automatic Embedding of Web Components

9.1.7 Dynamically Embedding Web Components

9.1.8 Considerations for Using Web Components

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Table of contents

  • Web Functions
    • 1. Introduction to LANSA Web Functions
      • 1.1 What are LANSA Web Functions?
      • 1.2 Major Features of LANSA Web Functions
      • 1.3 LANSA Web Function Architecture
      • 1.4 What is the Web Functions Wizard?
      • 1.5 Programming Language Skills
      • 1.6 How Do You Develop Applications with LANSA Web Functions?
      • 1.7 LANSA Web Function Transaction Server
      • 1.8 WEBEVENTs or WAMs?
    • 2. Developing Applications with LANSA Web Functions
      • 2.1 Before You Begin Checklist
      • 2.2 Web Enabling a LANSA Process
      • 2.3 Types of Web Functions
      • 2.4 Example of a Procedural Function
      • 2.5 Example of a WEBEVENT Function
      • 2.6 Shipped LANSA Web Function Templates
      • 2.7 Compiling Functions
      • 2.8 Using the e-Business Framework Wizard
      • 2.9 Calling LANSA Web Processes and Functions
      • 2.10 Executing Applications: Process Menu
      • 2.11 Executing Applications: WEBEVENT
    • 3. Executing LANSA Web Function Applications
      • 3.1 No Existing Web Site
      • 3.2 Integrating with an Existing Web Site
      • 3.3 Before You Deploy Your Applications
      • 3.4 Uniform Resource Locator (URL) Syntax
      • 3.5 Calling a LANSA Process
      • 3.6 Calling a LANSA Function Directly
      • 3.7 Passing Parameters to a LANSA Function
      • 3.8 Specifying a Task Identifier
      • 3.9 Debugging using iSeries Batch Debug
      • 3.10 Debugging using Visual LANSA
        • 3.10.1 Start Development Environment Debugging Session
        • 3.10.2 Start Web Browser Debugging Session
      • 3.11 Invoking the iSeries Spool File Facilities
      • 3.12 Event Logging
      • 3.13 Enabling Event Logging
      • 3.14 Logging User Defined Fields
    • 4. WEBEVENT Functions
      • 4.1 What is a WEBEVENT Function?
      • 4.2 How Does WEBEVENT Work?
      • 4.3 How is WEBEVENT Different?
      • 4.4 WEBEVENT Templates
      • 4.5 WEBEVENT Example
        • 4.5.1 Procedural Add an Employee Function
        • 4.5.2 Changes Required to Restructure for WEBEVENT
        • 4.5.3 Handling Re-entrant Functions
        • 4.5.4 Final WEBEVENT Function
        • 4.5.5 More Complex Example
      • 4.6 Automatic Data Exchange
      • 4.7 WEBEVENT Routing
      • 4.8 WEBEVENT Keywords
      • 4.9 Considerations for WEBEVENT Functions
      • 4.10 WEBEVENT Data and Function Timeout
    • 5. LANSA Generated HTML Pages
      • 5.1 Page Security
      • 5.2 Identifying Generated Pages
      • 5.3 Modifying the Process Menu
      • 5.4 Versioning of Pages
      • 5.5 Comparing Versions
      • 5.6 HTML Page Structure
      • 5.7 LANSA Field Names in HTML Pages
      • 5.8 HTML Generation Skeleton
        • 5.8.1 What is the HTML Skeleton?
        • 5.8.2 How Do I Use the HTML Skeleton?
        • 5.8.3 Considerations for Using the HTML Skeleton
    • 6. Default Process Pages
      • 6.1 What are Default Process Pages?
      • 6.2 Shipped Default Pages
      • 6.3 Other Default Pages
      • 6.4 Customizing Process Specific Pages
      • 6.5 User Defined Default Pages
      • 6.6 Standard HTML Page Components
      • 6.7 Other HTML Page Components
      • 6.8 Special XHTML Pages
      • 6.9 Process Specific Page Components
    • 7. RDML Tags
      • 7.1 What are LANSA Tags?
      • 7.2 How Do LANSA Tags Work?
      • 7.3 LANSA Tags Example
      • 7.4 Using <RDML> and </RDML> Tags
      • 7.5 <RDML BUTTON>
      • 7.6 <RDML CHECKVALUE>
      • 7.7 <RDML COMPONENT>
      • 7.8 <RDML COOKIES>
      • 7.9 <RDML FUNCTION>
      • 7.10 <RDML INCLUDE>
      • 7.11 <RDML LAYOUT>
      • 7.12 <RDML MERGE>
      • 7.13 <RDML MESSAGES>
      • 7.14 <RDML NOTCONDITION>
      • 7.15 <RDML ONCONDITION>
      • 7.16 <RDML ONMODE>
      • 7.17 <RDML PAGE>
      • 7.18 <RDML PARENT>
      • 7.19 <RDML SETTMPFLD>
      • 7.20 <RDML SSI>
      • 7.21 <RDML TRACE>
      • 7.22 Reserved Words
    • 8. Graphic Variables
      • 8.1 What are Graphic Variables?
      • 8.2 Why Use Graphic Variables?
      • 8.3 Types of Graphic Variables
        • 8.3.1 Image File Graphic Variables
        • 8.3.2 Color Graphic Variables
        • 8.3.3 Text Graphic Variables
      • 8.4 Default Graphic Variables
      • 8.5 Process Level Graphic Variables
      • 8.6 Browse List Graphic Variables
      • 8.7 Graphic Variables and the e-Business Framework Wizard
      • 8.8 Technically Speaking
    • 9. Web Components
      • 9.1 Introduction to Web Components
        • 9.1.1 What are Web Components?
        • 9.1.2 Web Component Architecture
        • 9.1.3 Web Component Example
        • 9.1.4 Types of Web Components
        • 9.1.5 Web Components and Modes
        • 9.1.6 Automatic Embedding of Web Components
        • 9.1.7 Dynamically Embedding Web Components
        • 9.1.8 Considerations for Using Web Components
      • 9.2 Manually Defined Web Components
        • 9.2.1 Banner
        • 9.2.2 Text
        • 9.2.3 Web Link
        • 9.2.4 Page
        • 9.2.5 Script
        • 9.2.6 Naming Page and Script Web Components
      • 9.3 Generated Web Components
        • 9.3.1 Visual Web Component
        • 9.3.2 Creating Visual Web Components
        • 9.3.3 Using Triggers to Generate Visual Web Components
        • 9.3.4 File Web Component
    • 10. Function Editor
      • 10.1 Introduction to Web Function Editor
        • 10.1.1 What is the Web Function Editor?
        • 10.1.2 Connecting to the Data/Application Server
        • 10.1.3 Starting the Web Function Editor
        • 10.1.4 Web Function Editor's Main Window
      • 10.2 File Menu
        • 10.2.1 New
        • 10.2.2 Open . . .(XML/HTML mode)
        • 10.2.3 Open (BASIC mode)
        • 10.2.4 Close
        • 10.2.5 Save
        • 10.2.6 Save As
        • 10.2.7 Save As (mode BASIC)
        • 10.2.8 Save To Local (mode BASIC only)
        • 10.2.9 Load From Local (mode BASIC only)
        • 10.2.10 Compare
          • New Comparison
          • Compare With
          • Compare With Version
          • Close
        • 10.2.11 Page Setup
        • 10.2.12 Print
        • 10.2.13 Connect
          • Save As
          • Advanced
      • 10.3 Edit Menu
        • 10.3.1 Paste HTML (HTML only)
        • 10.3.2 Clear All
      • 10.4 View Menu
      • 10.5 Tags Menu (HTML mode)
        • 10.5.1 Insert RDML Component
      • 10.6 Components Menu
        • 10.6.1 Maintain Component
          • Add a new Component
          • Duplicate
          • Banner Component (HTML mode)
            • Add/Change Banner Component
            • Add/Change Banner Detail
          • File Component
          • Page Component
          • Script Component (HTML mode)
          • Text Component
          • Visual Component
          • Web Link Component (HTML mode)
        • 10.6.2 Generate Component
          • Generate Visual Component
          • Generate File Component (HTML mode)
          • Considerations for using File Web Components
        • 10.6.3 Graphic Variables
          • Add Graphic Variable
          • Change Graphic Variable
      • 10.7 Options Menu
        • 10.7.1 Configure
          • Third Party Editor
          • View
          • Miscellaneous
        • 10.7.2 Font
        • 10.7.3 Invoke Third Party Editor
      • 10.8 Tools Menu
        • 10.8.1 Keywords
          • Add Keyword
          • Maintain Keyword
            • Change Keyword
    • 12. Web Development Tips & Techniques
      • 12.1 HTML as Field Contents
      • 12.2 Automatic Data Apportionment
        • 12.2.1 Specifying Apportionment Position
      • 12.3 Considerations for Browse Lists
      • 12.4 Message Presentation Layout
      • 12.5 Using <RDML MERGE="&END">
      • 12.6 Cascading Style Sheets
      • 12.7 Retrieve Additional Information from Browse List
      • 12.8 Handle the ENTER key in Browsers
      • 12.9 Embed a Calendar Control
      • 12.10 Modify LANSA for the Web Messages
      • 12.11 Set the Initial Focus in an HTML Page
      • 12.12 Tailoring the DEFAULT_SCRIPT
      • 12.13 Generate Static Page Output to the IFS (Integrated File System)
      • 12.14 Integrate LANSA Applications with Static HTML Pages
      • 12.15 CheckBox Visual Web Components
      • 12.16 Extend LANSA Drop Downs
      • 12.17 Modifying charset for non-English Systems
    • Tutorials for Web Functions & WEBEVENTs
      • WEB001 - Types of LANSA Web Functions
        • Step 1. Create a Procedural Function
        • Step 2. Create a WEBEVENT Function
        • Step 3. Execute your Procedural Function
        • Step 4. Execute Your WEBEVENT Function
        • Summary
      • Web Functions Wizard Tutorials
      • WEB002 - Coding a WEBEVENT Functions
        • Step 1. Review Procedural Logic
        • Step 2. Create New Functions
        • Step 3. Define Keywords for Function Routing
        • Step 4. Test Your WEBEVENT Functions
        • Step 5. Re-entrant WEBEVENT Function
        • Summary
      • WEB003 - iSeries Batch Debug
        • Step 1. Identify Your Terminal ID
        • Step 2. Call Your Function in Debug Mode
        • Step 3. Enter valid data into your browser.
        • Summary
      • WEB004 - LANSA Generated HTML Pages
        • Step 1. Open and Configure the Web Function Editor
        • Step 2. Identify Generated HTML Pages
        • Step 3. Edit the HTML Page for iiiFN05
        • Step 4. Modify and Recompile Function iiiFN05
        • Step 5. Use Compare and Contrast to Review your HTML
        • Summary
      • WEB005 - LANSA Process Pages
        • Step 1. Create a Message Presentation Page for iiiPROC03
        • Step 2. Create a Standard Header for Functions in Process iiiPROC03
        • Step 3. Create a Standard Footer for Functions in Process iiiPROC03
        • Step 4. Component Registry
        • Step 5. Add the Calendar Control and Edit the Default JavaScript
        • Step 6. Test the Calendar Control
        • Summary
      • WEB006 - Graphic Variables
        • Step 1. Create New Graphic Variables
        • Step 2. Add Graphic Variables to the Process Pages
        • Step 3. Test Your Graphic Variable.
        • Optional Step 4. Web Functions Wizard Graphic Variables
        • Summary
      • WEB007 - LANSA Tags
        • Step 1. Review the LANSA Tags in iiiFN05
        • Step 2. Add LANSA Tags to iiiFN05001 HTML Page
        • Step 3. Modify Standard Process Footer
        • Step 4. Test the function
        • Summary
      • WEB008 - Web Components
        • Step 1. Create a New Field in the Repository
        • Step 2. Create Visual Web Component
        • Step 3. Create a Text Web Component
        • Step 4. Banner Web Component
        • Step 5. Use Hidden Fields in Function
        • Step 6. Create a Web Link Component
        • Summary
      • WEB009 - Web Page Substitution (Optional - Advanced)
        • Step 1. Create a New Function
        • Step 2. Create a New Web Component
        • Step 3. Copy the HTML Code For Page Component iiiFN08C
        • Step 4. Test the Function
        • Step 5. Add Fields to the iiiFN08 Function
        • Optional Step 6. Modifying iiiFN06
        • Summary
      • WEB010 - Web Skeletons (iSeries)
        • Step 1. Copy Default Web Skeleton
        • Step 2. Edit the Web Skeleton
        • Step 3. Execute Your Function
        • Step 4. Recompile Your Function
        • Step 5. Execute Your Functions
        • Summary
      • WEB011 - Using DEFAULT_HIDDEN
        • Step 1. Create Login Function
        • Step 2. Edit Standard Header for iiiPROC03
        • Step 3. Test your Functions
        • Step 4. Create a Process Level _HIDDEN Page
        • Step 5. Test your Functions
        • Summary
      • WEB012 - Dynamic Components
        • Step 1. Create a New Page Component
        • Step 2. Modify iiiPROC03_STDHEADER
        • Step 3. Test Your Function
        • Summary
      • WEB013 - JavaScript and Browse Lists
        • Step 1. Create Fields to be used as Function Parameters
        • Step 2. Create iiiFN11 Employee List
        • Step 3. Edit Process Level _SCRIPT
        • Step 4. Create a Link Component
        • Step 5. Modify Function iiiFN07
        • Step 6. Test Changes
        • Step 7. Include New Component Link into Employee Browse List
        • Step 8. Build Function iiiFN12 Employee Details
        • Step 9. Test Your New Functions
        • Step 10. Execute function iiiFN12 from a Command Line (Optional)
        • Step 11. Create Page Component for Function iiiFN12 (Optional)
        • Step 12. Test Changes (Optional)
        • Summary
      • WEB014 - Browse Lists
        • Step 1. Create Page Component for Function iiiFN11
        • Step 2. Test Changes
        • Step 3. Create Graphic Variable for Browse List
        • Step 4. Test Changes
        • Step 5. Customize Browse List
        • Step 6. Test Changes
        • Step 7. Add Table Tags Around Browse List
        • Step 8. Test Changes
        • Step 9. Add Column Headings To Browse List
        • Step 10. Test Your Functions
        • Summary
      • WEB015 - Data Apportionment
        • Step 1. Create iiiFN13 – Contact Us
        • Step 2. Create a New Page Component
        • Step 3. Compile and Test Your Function iiiFN13
        • Step 4. Using JavaScript Alerts (Optional)
        • Summary
      • WEB016 - Customizing Personnel Application (Optional)
        • Step 1. Design Your Layout
        • Step 2. Test
        • Summary
      • Personnel Demonstration System
        • Personnel System Demonstration Files
        • Sample Data in the Personnel Files
    • Appendix A. Header Styles
      • Static Header
      • Dynamic Header
      • Scrolling Header
      • Non-Scrolling Header
      • Frameset Definition
      • Limitations of non-scrolling headers
      • Combination Of Scrolling And Non Scrolling Header Styles
      • Override Header Style
      • Adopted Header Style
    • Appendix B. LANSA for the Web XHTML
      • Introduction to XHTML 1.0
        • What is XHTML 1.0?
        • Why use XHTML 1.0?
        • Compatibility with HTML
      • Converting HTML to XHTML 1.0
        • XHTML Syntax Rules
        • XML Declaration
      • XHTML Document Type Definition (DTD)
        • Document Type Definition (DTD)
        • How to Avoid the Insertion of the DOCTYPE Declaration
      • Serving XHTML Pages as Pure XML Pages

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