Table of Contents
The OpenLaszlo Reference describes all of the public XML tags and JavaScript APIs in the LZX language.
The Reference Guide is divided into chapters, each describing a distinct category of programming interfaces. Each chapter contains a number of sub-chapters, corresponding to sub-categories of APIs, and each sub-chapter contains entries for each of those APIs.
Each reference entry contains a title (with an optional short description), a synopsis (floated to the right of the page in HTML), an optional Usage section, a Description, followed by a Details section. Each of these is pretty self-explanatory except for the Details section, which is described in the next section.
Structure
These elements structure the code within an application, allowing you to break it into multiple files or to define custom elements.
Language
These are are the tags you use to create and expand your own new tags.
Scripting
JavaScript APIs.
View Basics
These are the elements that place a view on the canvas. A view controls the presentation of media and data, and responds to user events.
Base Classes
Base classes are designed to be extended. The classes in the Components section extend these.
Components
These are user-interface components in the OpenLaszlo components library. These tags can be used to build to web applications. See the Components Hierarchy for an interactive guide to these classes. An application can include the entire set of OpenLaszlo components by including the line <include href="lz"/>. An application can include individual OpenLaszlo components by including just the files that define those components.
Animation
These elements change the values of another element's attributes over time.
States
Visual states and behaviors can be attached to and removed from an object over the course of an execution.
Layouts
These elements determine the position of views within a parent view.
Menus and Commands
These elements are for creating menus and menu bars, and processing commands.
Services
Services support interacting with the external environment.
Data
The data elements and classes are for requesting data from a server and binding it to views.
HTML Markup
This secion contains tags that mark up HTML text. These tags may be used within a
<tagname link="true">text</tagname> element, tags that
extend this tag, and tags whose definition includes a definition for
<attribute name="text" type="html"/>. (See the
documentation on Section 2.4, “Text Classes” for more
information about this last category.)
Media
These are elements that import media objects into an application and control their use.
Audio Video
Elements for interacting with audio and video devices, such as cameras and microphones.
RPC
Implementation and APIs that invoke remote procedures calls or services over the network.
Charts and Graphs
Elements for creating charts and graphs. These components are of beta quality and are subject to change.
Development
Elements and APIs that are used during development, for debugging and testing.
The Details section contains information about the methods and properties of each LZX tag-class. Each method or property is described using both LZX syntax and JavaScript syntax.
Fully understanding a method or property entry requires understanding a bit about how LZX tags correspond to JavaScript classes. Almost every LZX tag in the language -- and every LZX class declared in your program -- is implemented under the covers as a JavaScript class. An LZX tag's methods and attributes correspond to JavaScript methods and properties. LZX's events and handlers correspond to more complex JavaScript constructs. How to combine JavaSaript and LZX tags is described in more detail in Section 6, “Combining Tags and Script in LZX Programs”.
Certain information about a class or its methods or properties can only be described using JavaScript syntax. For example, an item can be public, private, or protected (meaning that it is only visible to a subclass); this information is given as a modifier to the JavaScript item declaration.
Certain parts of the LZX language are actually written in JavaScript, so LZX type information given for these entries in the Reference Guide must be inferred from the original JavaScript type declaration. All other portions of LZX -- including your application source -- are of course written in LZX, so JavaScript type information given in the Reference Guide for those portions (useful when writing scripts) much be inferred from any typing information given in the LZX source.
LZX types are mostly advisory, but can have an effect on program execution. See the Section 6.2, “Attribute types” in the OpenLaszlo Application Developer's Guide for more information.
Developer's Guide: targeted at software developers who have familiarity with the concepts of object-oriented programming as implemented in languages such as Java, C++, or JavaScript, and with the fundamentals of XML data formats, including tutorials and scores of live, editable examples.
Tutorials: part of the OpenLaszlo Application Developer's Guide, the tutorials present simple, live examples that you can edit and run to help you become more familiar with OpenLaszlo concepts.
OpenLaszlo System Administrator's Guide: how to put OpenLaszlo applications on the web
Laszlo Explorer: all the documentation listed above, and:
Demos: rich internet applications that show unity of design
OpenLaszlo in Ten Minutes: an interactive guided tour to get you started
Small Applications: shorter programs that illustrate specific aspects of OpenLaszlo development
Components: an illustrated compendium of OpenLaszlo's prebuilt, user-extendable objects
OpenLaszlo Community: a way for you to get involved in OpenLaszlo development and support
Developer Forums: discussion lists about all things OpenLaszlo
Copyright © 2002-2010 Laszlo Systems, Inc. All Rights Reserved. Unauthorized use, duplication or distribution is strictly prohibited. This is the proprietary information of Laszlo Systems, Inc. Use is subject to license terms.