r1 - 05 Dec 2005 - 22:22:33 - DonnDenmanYou are here: OSAF > Projects Web > DevelopmentHome > ZeroPointSixDocumentation > BusyBlockGuide
Busy Developer's Guide to CPIA Blocks
Here is a list of the commonly used blocks, in alphabetical order. Each table entry lists the block's Kind, a brief description, and some notes about instantiating it, and where it's used in Chandler. Then the bulk of the entry is a list of attributes, their type, and what it's used for. Most attribute descriptions tell you if it's required or optional.| Kind | Attributes | Description | Card | Type | Initial |
|---|---|---|---|---|---|
| AEBlock (BoxContainer) -- Allows displaying and editing an attribute value in a format determined by the attirbute's type. | |||||
| changeEvent | Optional event to send when the attribute changes. | single | BlockEvent | N/A | |
| characterStyle | Optional style to use when drawing text characters. | single | CharacterStyle | N/A | |
| presentationStyle | Optional style to use for presentation of this block. | single | PresentationStyle | N/A | |
| readOnly | Optional flag to prevent editing the attribute's value. | single | Boolean | False | |
| Block (Item) -- An abstract chunk of UI to display. | |||||
| blockName | Required identifier used to locate the block at runtime. | single | Text | N/A | |
| childrenBlocks | Optional list of contained blocks. | list | Block | [ ] | |
| contents | Optional reference to an item whose value is displayed by this block. | single | ContentItem | N/A | |
| eventBoundary | Optional flag to contain events within this block and its children. | single | Boolean | False | |
| eventsForNamedLookup | Optional list of events this block publishes for external access, including scripting. | list | BlockEvent | N/A | |
| isShown | Optional ability to keep a block from being visible. | single | Boolean | True | |
| minimumSize | Optional size constraint to prevent shrinking beyond some minimum size. | single | SizeType | SizeType(-1, -1) | |
| size | Optional fixed size to set for this block. Use with stretchFactor = 0. | single | SizeType | SizeType(1040, 620) | |
| stretchFactor | Optional ability to resize this block when its parent is resized, but the given factor. | single | Float | 1.0 | |
| viewAttribute | Optionally specifies which attribute of the selected Item should be associated with this block, for AEBlocks only. | single | Text | '' | |
| BoxContainer (RectangularChild) -- A container block whose children are automatically arranged linearly. | |||||
| orientationEnum | Optional ability to layout vertically instead of horizontally. | single | orientationEnumType | Horizontal | |
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