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PHP

Building an Extensible Menu Class
By: Team Melonfire, (c) Melonfire
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    2001-08-10

    Table of Contents:
  • Building an Extensible Menu Class
  • Back To Class
  • What's On The Menu?
  • Children And Their Parents
  • I Say Method, You Say Madness...
  • Rounding Up The Family
  • Saving My Bookmarks
  • Reaching Higher
  • Collapsing Inwards
  • Extending Yourself

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    Building an Extensible Menu Class - What's On The Menu?


    (Page 3 of 10 )

    So that's the theory. Let's now spend a few minutes discussing the rationale behind the Menu object I plan to build.

    Conceptually, a Web site can be considered as a combination of two things: menus and content. Menus are used to organize and classify the type of content, and to offer one or more navigational paths to specific content modules.

    Now, although a menu may be visually presented in a number of different ways, there are certain common elements present in every menu:

    1. Most menus are broken into levels, with each level more focused than the last; this hierarchical structure is sometimes referred to as a "menu tree".

    2. Every menu tree consists of nodes connected to each other by branches.

    3. A node may have one or more children, but can have only one parent.

    Using these common principles, it is possible to build a Menu object which exposes certain generic methods. These methods will have nothing to do with the visual presentation of the menu tree; rather, they provide a simple API to various menu attributes and relationships, and can be used by client- or server-side scripts which are more closely connected to the presentation layer.

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