1. Introducing Mapbuilder Michael Adair Natural Resources Canada

2. Introduction Leverages OGC specifications for web mapping: Context, WMS, … Retrieves XML documents (and images) dynamically at run-time using HTTP Renders XML documents to HTML using the browser’s built-in XSLT processor Object-oriented architecture using the Model-View- Controller (MVC) design pattern Mapbuilder-lib consists of JavaScript components to build geographic client applications within a web browser

3. Design Drivers Client is a web browser Minimal server side requirements Easy to incorporate libraries into a web page Keep bandwidth to a minimum Use JavaScript/DHTML, XML/XSL Modular design Open source (GPL) Attract developers

4. MVC design pattern Model maintains the state and data of the application - the XML document View A rendering of the XML document Controller The user interface presented to the user to manipulate the application The MVC pattern forces one to think of an application in terms of three modules:

5. The configuration file All mapbuilder applications are initialized from an XML configuration file Closely follows the MVC design pattern to define models, widgets (views) and tools (controllers) used in the application Links the HTML elements to JavaScript objects via ID attributes Follows Object-Property-Value rule of RDF and GML

6. Using Mapbuilder Download the library and install on a web server Create the HTML for your page and identify elements where mapbuilder content is to be inserted Create your configuration document Include the JavaScript library and initialize

7. Simple example page Mapbuilder Demo // URL of Mapbuilder configuration file. var mbConfigUrl='config/SimpleConfig.xml';

8. Demos Mapbuilder User Guide (Quicklook server) (Localhost version) Reference implementation (Quicklook server) (Localhost version) Loading external URLs

9. Features Very easy entry point to web mapping Extensible Consumes standards-based web services, primarily from the OGC Runs in IE6, Mozilla 1.3+, Netscape 6+ Very responsive client – no page reloads

10. Future plans Support for more models, widgets, tools from user requirements WFS client: via WMS/SLD and/or SVG depends on OGC context spec evolution WFS-T client: add/edit features depends on WFS-T server Applications: simple to complex Allows community to make maps Context editor

11. Contact Info http://mapbuilder.sourceforge.net Mapbuilder mailing list: mapbuilder-devel@lists.sourceforge.net mike.adair@nrcan.gc.ca Also at the NRCan booth in the exhibit area