heitml outline components produce Web site menus (the menu you see at the left side of this page, for example). You may have already noticed that the menu uses an arrow to point to the current Web page. It also expands to reveal sub-pages belonging to that section, and contracts again when you move to another part of the site. But the outline system operates on a deeper level:
A Web site outline is structured in the form of a tree, organized into sections, nested sub-sections (if necessary) and pages. You specify this structure in one central place, but not in the actual pages. This makes it easy to change the structure. All you need do is change the outline file. The links on all pages, as well as the menus, adjust themselves accordingly.
Initially the outline works automatically, without user interaction: If you choose the outlayout page layout component, it automatically shows the menu on the left and the new page wizard automatically adds entries to the menu.
Editing the Outline
You can edit the outline of a Web site by selecting
The New Page Wizard automatically creates an entry in the outline for each new page, provided a page name is entered. The entry is placed immediately after the most recently displayed page.
Each section of the Web site usually encompasses other menu entries which itself can be sections or single menu entries. In this way, you can build a hierarchical outline structure. The single menu entries are the leaves of this hierarchy, each represented by an olEntry component. This component is configured in the same way as an olSection component.
heitml includes several components to create links based on the outline you defined in the menu. These links also adjust automatically when the outline changes. olLink creates a link to a page. Like olSection or olEntry, it uses the page name to point to the target page.
olLinkName is similar to olLink, but it has no content and uses the menu name instead. These two links can point directly to any page (or a target anchor within a page) on your Web site. Conceptually, they are similar in function to the traditional HTML source anchor (<a href=...>), though the syntax is a little different.
heitml uses two other kinds of links called sectional and transitive links to help you navigate the menu outline in a logical manner.
In other words, transitive links jump from one section to another, while sectional links go back and forth among the pages belonging to the current sub-section.
The link text automatically is the name of the linked page.
Menu Generating Components
At first you will probably use an existing page layout to display the menu, but if you want to create your own page layout, or display a menu somewhere on a page, you should use the heitml menu components.
The olStructure component displays a complete table of contents (i.e. all sections, sub-sections and pages). olSubMenu on the other hand just prints a one-level list of sub-sections belonging to a certain section (by default the current section). Inside both components you can use various components to display the name of section, the hierarchical number of a section, or link to a section.
olSelect is a bit more specialized. It creates a quick select box that can be used to quickly navigate to a certain page.
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