Adobe 38040334 Extending Dreamweaver - Page 14
Customizing the interpretation of third-party tags
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DREAMWEAVER CS3 8 Extending Dreamweaver For example, for JPEG files, enter the following: JPG,JPEG,JFIF:JPEG Image Files 4 Save the file. 5 Restart Dreamweaver. To see the changes, select File > Open, and click the pop-up menu of file types. Customizing the interpretation of third-party tags Server-side technologies such as ASP, ColdFusion, JSP, and PHP use special non-HTML code in HTML files; servers create and serve HTML content based on that code. When Dreamweaver encounters non-HTML tags, it compares them with information in its third-party tag files, which define how Dreamweaver reads and displays non-HTML tags. For example, in addition to regular HTML, ASP files contain ASP code for the server to interpret. ASP code looks almost like an HTML tag, but is marked by a pair of delimiters: it begins with . The Dreamweaver Configuration/ThirdPartyTags folder contains a file named Tags.xml, which describes the format of various thirdparty tags, including ASP code, and defines how Dreamweaver displays that code. Because of the way ASP code is specified in Tags.xml, Dreamweaver does not try to interpret anything between the delimiters; instead, in Design view, it displays an icon that indicates ASP code. Your own tag database files can define how Dreamweaver reads and displays your tags. Create a new tag database file for each set of tags, to tell Dreamweaver how to display the tags. Note: This section explains how to define the way Dreamweaver displays a custom tag, but doesn't describe how to provide a way to edit the content or properties of a custom tag. For information on how to create a Property inspector to inspect and change the properties of a custom tag, see "Property inspectors" on page 210. Each tag database file defines the name, type, content model, rendering scheme, and icon for one or more custom tags. You can create any number of tag database files, but all of them must reside in the Configuration/ThirdPartyTags folder to be read and processed by Dreamweaver. Tag database files have the .xml file extension. If you are working on several unrelated sites at once (for example, as a freelance developer), you can put all the tag specifications for a particular site in one file. Then simply include that tag database file with the custom icons and Property inspectors that you hand over to the people who will maintain the site. You define a tag specification with an XML tag called tagspec. For example, the following code describes the specification for a tag named happy: You can define two kinds of tags using tagspec: • Normal HTML-style tags The happy tag example is a normal HTML-style tag. It starts with an opening tag, contains data between opening and closing tags, and ends with a closing tag. • String-delimited tags String-delimited tags start with one string and end with another string. They are like empty HTML tags (such as img) in that they don't surround content and don't have closing tags. If the happy tag were a string-delimited tag, the tag specification would include the start_string and end_string attributes. An ASP tag is a string-delimited tag; it starts with the string , and it has no closing tag.
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