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FlexJS solves these problems by allowing developers to add just the features they need when they need them. Instead of every text input field having password and prompt capabilities, only a few text input controls have those features and the application remains lighter as a result.

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Beads can interact with each either through the strand, with events, or direct manipulation. For example, a bead that makes text red might listen for changes to the component's model and, when it detects a key word, changes the text in the model; the change to the model would get reflected in the view bead. Beads can add visual elements to components (view beads) or just change data or handle events.

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Of course, if you find that you frequently need a set of components, creating a composite, custom component that combines the beads needed is also possible.

Bead Guidelines

• Most beads use their strand for their UI parent. Beads can make or use other components or visual parts, then they add them to their strand’s display list.
• Try to use interfaces whenever possible. This keeps implementation code separate and lets modules work better.
• Use the paradigm of separation of concerns as much as possible. That is, do not have beads do more than necessary and separate functions into multiple beads. Very often a component will have one bead for the visual display (a view bead), one bead to hold its data (a model bead), and one bead to handle user interactions (a control bead). This allows a developer to swap out beads as necessary. For example, a mobile developer might want to replace the Slider's mouse controller bead with a touch controller bead: the component's other parts (track, thumb, model, etc.) remain the same.

Making a Component - ActionScript

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