| 摘要 |
Using declarative language application instructions, one or more actions associated with playing interactive content of an interactive multimedia presentation are conditionally triggered based on a state change of a style or non-style characteristic of a particular media object. Certain application instructions specify the characteristic of the media object, while other application instructions specify the actions associated with playing the interactive content (for example, when one or more media objects are renderable, event generation, script execution, or changes in variables) based on a state change of the characteristic. The state change is detected by querying a structured representation of the application, which includes nodes associated with the application instructions, the media object, and/or the characteristic. When state changes are detected, one or more of the specified actions are triggered. |
