Smalltalk-80: the language and its implementation
Smalltalk-80: the language and its implementation
Pushdown automata for user interface management
ACM Transactions on Graphics (TOG)
Designing the user interface: strategies for effective human-computer interaction
Designing the user interface: strategies for effective human-computer interaction
ACM Transactions on Graphics (TOG)
A survey of three dialogue models
ACM Transactions on Graphics (TOG)
Relations as semantic constructs in an object-oriented language
OOPSLA '87 Conference proceedings on Object-oriented programming systems, languages and applications
Communications of the ACM
Statemate: a working environment for the development of complex reactive systems
ICSE '88 Proceedings of the 10th international conference on Software engineering
Specifying complex dialogs in ALGAE
CHI '87 Proceedings of the SIGCHI/GI Conference on Human Factors in Computing Systems and Graphics Interface
Using formal specifications in the design of a human-computer interface
Communications of the ACM
Transition network grammars for natural language analysis
Communications of the ACM
Human Factor: Designing Computer Systems for People
Human Factor: Designing Computer Systems for People
SYNGRAPH: A graphical user interface generator
SIGGRAPH '83 Proceedings of the 10th annual conference on Computer graphics and interactive techniques
Tangible augmented prototyping of digital handheld products
Computers in Industry
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State trees are a technique for specifying the control of an interactive system by organizing states into trees to define shared structure and behavior. The tree structure permits inheritance of state information, event traps, and entry and exit actions from states to substates, thereby sharing information and reducing the amount of code to be written. An interface can be restructured by moving entire subtrees as modules. State trees separate the recognition of commands from their implementation, allowing either to be modified independently. State trees structure flow of control within an implementation without imposing an identical structure on the interface itself, which need not be hierarchical. State trees have been implemented in an object-oriented language and used to write interactive applications.