MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Especificações descarregar pdf (Página 382)

382 Data Sources

8. Every time the user changes the selection, Dreamweaver calls the

inspectDynamicDataRef() function to determine whether the new selection is dynamic

text or a tag with a dynamic attribute. If it is dynamic text, Dreamweaver displays the

bindings for the current selection in the Bindings panel.

9. Using the Dynamic Data or the Dynamic Text dialog box or the Bindings panel, it’s

possible to change the data format for a dynamic text object or a dynamic attribute that the

user has already added to the page. When the format changes, Dreamweaver calls the

generateDynamicDataRef() function to get the string to insert into the user’s document

and passes that string to the

formatDynamicDataRef() function (see

“formatDynamicDataRef()” on page 405). The string that the

formatDynamicDataRef()

function returns is inserted in the user’s document.

A simple data source example

This extension adds a custom data source to the Bindings panel for Macromedia ColdFusion

documents. Users can specify the variable they want from the new data source.

This example creates a data source called MyDatasource, which includes a MyDatasource.js

JavaScript file, a MyDatasource_DataRef.edml file, and MyDatasource Variable command

files to implement a dialog box for users to enter the name of a specific variable. The

MyDatasource example is based on the implementation of the Cookie Variable data source

and the URL Variable data source. The files for these data sources reside in the Configuration/

DataSources/ColdFusion folder.

You create this data source by performing the following steps:

■ Creating the data source definition file

■ Creating the EDML file

■ Creating the JavaScript file that implements the Data Sources API functions

■ Creating the supporting command files for user input

■ Testing the new data source

Creating the data source definition file

The data source definition file tells Dreamweaver the name of the data source as it will appear

in the Bindings Plus (+) menu and also tells Dreamweaver where to find the supporting

JavaScript files for the data source implementation.

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MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Especificações Página 382