HTML is a fairly limited environment which relies on files created with other technologies to add functionality to web pages. Typical examples of related files are server-side includes, CSS, JavaScript and XML. Dreamweaver now includes a feature called "Related Files" which enables you to edit the content of such files, without having to open them separately, and to instantly see the effect of your changes on the main file.
There have also been some nice new additions to the Spry form validation widgets. The Spry Validation Password widget allows you to specify the minimum and maximum number of characters, numbers, uppercase and special characters which can be included in the password entered. The Spry Validation Confirm widget checks that the entries in two fields are identical and displays a customizable error is they are not. This makes it ideal for creating "Password/Confirm Password" or "Email/Confirm Email" functionality.
Photoshop Smart Objects
Spry is Dreamweaver's Ajax solution which uses JavaScript and CSS to add sophisticated interactivity to your web pages. Dreamweaver CS4 includes some useful additions to its existing range of Spry widgets. The Spry Validation Password widget allows you to specify the minimum and maximum number of characters, numbers, uppercase and special characters which can be included in the password entered. The Spry Validation Confirm widget checks that the entries in two fields are identical and displays a customizable error is they are not. This makes it ideal for creating "Password/Confirm Password" or "Email/Confirm Email" functionality.
Other new widgets include the Spry Tooltip widget which allows you to create a tooltip which will appear when the mouse is placed over the specified text or object. Since the tooltip is inside a DIV element, this offers tremendous flexibility as to the appearance of the tooltip. For example, it could include an image or a Flash movie.
Inserting Photoshop Smart Objects
The fact that the image is a smart object means that if we resize it in Dreamweaver, it will automatically be re-optimised and a new version of the image will be generated with the new dimensions. (In previous versions, resizing an image would mean that the browser was responsible for resizing leading to poor image quality.
Whenever you open a file which contains linked files, Dreamweaver displays each of the linked files in the Related Files Bar. To access a related file just click on its name. If you make any changes to a related file and asterisk appears next to its name in the Related Files Bar to remind you to save your changes. When you do, the impact of the changes is immediately visible in the main file.
Once the image has been imported, an icon is displayed in the upper left of the image indicating that it is a smart object. Also, in the Property Inspector, the location of the original PSD file is shown in a box marked "Original".
The Photoshop integration which was begun in Dreamweaver CS3 has been enhanced in CS4 to offer via the use of Adobe's Smart Objects technology. A Photoshop file can be imported directly into Dreamweaver and will automatically come in as a smart object.
Photoshop images are can be inserted using the same techniques as inserting any other image file: Insert - Image; dragging from the Files panel; dragging from the Assets panel; or using the Insert toolbar. A Photoshop-style Optimise window automatically appears and you can choose the settings appropriate for that particular image usually GIF, JPEG or PNG.
The Property Inspector can be used to change the attributes of any element you select on an HTML page. In previous versions of Dreamweaver, changing the attributes of highlighted text would cause the program to create CSS classes with names like "Style1", "Style2", etc. in the head area of the current page. This random creation of styles was often responsible for getting new web developers into bad habits.
In Dreamweaver CS4, the Property Inspector contains buttons which allow you to switch between HTML and CSS options. When working in the CSS options, you can now target a specific CSS rule before choosing an attribute or, if necessary, create a new rule.
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