Package components are almost always free. To define components:
The Edit task displays the edit list of components. To edit component classes, click the Edit button. In the Edit component class window, click the Create/Edit button. To define components with component names, insert the names of the components into the text boxes. To define components with generic names, use an expression in the text boxes to create the component name.
After editing, the file is saved in the same location as where you saved your file. You may change the name of the component at any time by selecting the Remove button on the Edit panel. Once the desired change is done, the changes are applied to the selected elements immediately. To define components with lifecycle, you must select the Lifecycle tab on the editor menu. On the Lifecycle tab, click the arrow button next to Each. Then, change the values for each component: the value for the Target Lifecycle from Before to After, and the value for the Child Lifecycle from Before to After.
Here’s another trick to define components in XML. To add or delete component properties, first, create or add the elements or text boxes, then drag over the items to define their positions. Press the Del key on each item to move the items to their defined positions. Notice that the order lines are not drawn, so the order of the elements or boxes will not be correct. Pressing the Esc key will cancel the actions. You can also change the format of the text boxes and the order of the elements by using the Format toolbar.
Now, define a dependency of a variable or text box with the Dependency element. In addition to a list of component elements, the Dependency should also contain a reference to the actual object being dependent. For instance, if you have a text box that contains an Image object as a dependency, then the actual object is referenced. By default, the Dependency element in an XML document looks like this:
The naming of the components in an XML document depends on the type of component and the structure of the markup language used to construct it. When an XML document is created with the text editor of your choice, the text boxes will be inserted before the root element. The components will appear as normal text nodes. However, once you save the document, these text nodes will appear as attributes of an Element object. These nodes will have their own unique names, such as MyText node and MyParenthetical Element.
A component’s HTML rendering will depend on the XML rate structure that the component is written in. Most XML-based languages will provide a fallback mechanism for users who cannot define or select their own component’s HTML code. This is done by listing the component’s attributes and properties on the form. Once the user types in the required text box or another input form, the appropriate XML rate structure will be automatically created for the component so that the user’s document will be rendered correctly.
All standard component specifications allow for custom element classes, which are named constants. In addition to constant values, however, each component may define a single static variable, which is dynamically assigned based on the component’s current state, upon entering a particular XML rate code. Once the code is defined, the static variable will be accessed each time the component is rendered. This type of component is known as dynamic.
If a document is passed through two phases before being rendered, then one of the two phases – force update or lifecycle must be respected. Components should properly indicate whether they are forced to update during a particular phase, or whether they can omit the update when it is not applicable. Components should also be able to indicate whether they are in a forced update or lifecycle, as well as whether they are still in the lifecycle. A component’s documentation should list each entity associated with the component, as well as any additional entity that is associated with the component. This information is helpful for both component authors and viewers. For instance, if a user enters a URL and the component author has defined the URL’s hostname, then the author needs only send the Host Name instead of sending an URL for the component.
The HTTP spec defines several different ways to request an object’s headers. For example, an XML-API component may define a header for Content-Transfer-Encoding, Accept-Version, etc. Although all browsers implement these headers automatically, it is important to specify which version of the standard they are acceptable. In addition, components that use HTTP request/response functionality need to use the same approach for rendering all components, as the approach would need to be consistent with the format that each component expects.
Many existing libraries define components by means of an interfaces and an interface dictionary. While this approach allows components to co-exist without being dependent on each other, the nesting of structures within the hierarchy can be difficult to maintain. As new libraries and technologies are developed, the lifecycle diagram should be updated accordingly. This process can be implemented using a component-based lifecycle management tool, which refreshes the diagram once a new component is defined.