Methods and apparatus for voice-enabling a web application

1. A method of determining a collective set of supported voice interactions for a plurality of frames of a web page displayed in a window of a web browser, wherein each of the plurality of frames includes content for a different web application, wherein the content for each of the plurality of frames is displayed simultaneously in the window of the web browser, wherein the plurality of frames includes a first frame and a second frame, wherein the first frame displays content for a first web application rendered by the web browser and the second frame displays content for a second web application rendered by the web browser, wherein the first web application is different from the second web application, the method comprising:

identifying a first data structure that includes information identifying a plurality of contexts of the first web application and supported voice interactions for the first web application in each of the plurality of contexts of the first web application;

determining a first current context of the first web application, wherein determining the first current context comprises analyzing whether a particular marker is present in the content displayed in the first frame;

determining based, at least in part, on the first current context of the first web application and the information included in the first data structure, a first set of supported voice interactions available for the first frame;

identifying a second data structure that includes information identifying a plurality of contexts of the second web application and supported voice interactions for the second web application in each of the plurality of contexts of the second web application;

determining based, at least in part, on a second current context of the second web application and the information included in the second data structure, a second set of supported voice interactions available for the second frame;

determining the collective set of supported voice interactions based on the first set of supported voice interactions and the second set of voice interactions; and

instructing an external speech engine to recognize voice input corresponding to the collective set of voice interactions.

2. The method of claim 1 , further comprising:

associating a first agent with the first frame and a second agent with the second frame, wherein the first agent is configured to monitor first events associated with the first frame and the second agent is configured to monitor second events associated with the second frame; and

wherein the first current context of the first web application is determined based, at least in part, on the first events and the second current context of the second web application is determined based, at least in part on the second events.

3. The method of claim 1 , wherein the collective set of supported voice interactions comprises a union of the supported voice interactions in the first set and the second set.

4. The method of claim 1 , wherein the collective set of supported voice interactions includes less than all of the supported voice interactions in the first set and the second set.

5. The method of claim 1 , wherein determining the first set of supported voice interactions comprises determining an identity of the first web application.

6. The method of claim 5 , wherein determining the identity of the first web application is performed based, at least in part, on an identifier for a web page of the first web application.

7. The method of claim 1 , wherein determining the first set of supported voice interactions available for the first frame comprises monitoring for browser events in the first frame.

8. A non-transitory computer-readable storage medium encoded with a plurality of instructions that, when executed by a computer, perform a method of determining a collective set of supported voice interactions for a plurality of frames of a web page displayed in a window of a web browser, wherein each of the plurality of frames includes content for a different web application, wherein the content for each of the plurality of frames is displayed simultaneously in the window of the web browser, wherein the plurality of frames includes a first frame and a second frame, wherein the first frame displays content for a first web application rendered by the web browser and the second frame displays content for a second web application rendered by the web browser, wherein the first web application is different from the second web application, the method comprising:

identifying a first data structure that includes information identifying a plurality of contexts of the first web application and supported voice interactions for the first web application in each of the plurality of contexts of the first web application;

determining a first current context of the first web application, wherein determining the first current context comprises analyzing whether a particular marker is present in the content displayed in the first frame;

determining based, at least in part, on the first current context of the first web application and the information included in the first data structure, a first set of supported voice interactions available for the first frame;

identifying a second data structure that includes information identifying a plurality of contexts of the second web application and supported voice interactions for the second web application in each of the plurality of contexts of the second web application;

determining based, at least in part, on a second current context of the second web application and the information included in the second data structure, a second set of supported voice interactions available for the second frame;

determining the collective set of supported voice interactions based on the first set of supported voice interactions and the second set of voice interactions; and

instructing an external speech engine to recognize voice input corresponding to the collective set of voice interactions.

9. The computer-readable storage medium of claim 8 , wherein the method further comprises:

associating a first agent with the first frame and a second agent with the second frame, wherein the first agent is configured to monitor first events associated with the first frame and the second agent is configured to monitor second events associated with the second frame; and

wherein the first current context of the first web application is determined based, at least in part, on the first events and the second current context of the second web application is determined based, at least in part on the second events.

10. The computer-readable storage medium of claim 8 , wherein the collective set of supported voice interactions comprises a union of the supported voice interactions in the first set and the second set.

11. The computer-readable storage medium of claim 8 , wherein the collective set of supported voice interactions includes less than all of the supported voice interactions in the first set and the second set.

12. The computer-readable storage medium of claim 8 , wherein determining the first set of supported voice interactions comprises determining an identity of the first web application.

13. The computer-readable storage medium of claim 12 , wherein determining the identity of the first web application is performed based, at least in part, on an identifier for a web page of the first web application.

14. The computer-readable storage medium of claim 8 , wherein determining the first set of supported voice interactions available for the first frame comprises monitoring for browser events in the first frame.

15. A computer for determining a collective set of supported voice interactions for a plurality of frames of a web page displayed in a window of a web browser, wherein each of the plurality of frames includes content for a different web application, wherein the content for each of the plurality of frames is displayed simultaneously in the window of the web browser, wherein the plurality of frames includes a first frame and a second frame, wherein the first frame displays content for a first web application rendered by the web browser and the second frame displays content for a second web application rendered by the web browser, wherein the first web application is different from the second web application, the computer comprising:

at least one processor programmed to:

identify a first data structure that includes information identifying a plurality of contexts of the first web application and supported voice interactions for the first web application in each of the plurality of contexts of the first web application;

determine a first current context of the first web application, wherein determining the first current context comprises analyzing whether a particular marker is present in the content displayed in the first frame;

determine based, at least in part, on the first current context of the first web application and the information included in the first data structure, a first set of supported voice interactions available for the first frame;

identify a second data structure that includes information identifying a plurality of contexts of the second web application and supported voice interactions for the second web application in each of the plurality of contexts of the second web application;

determine based, at least in part, on a second current context of the second web application and the information included in the second data structure, a second set of supported voice interactions available for the second frame;

determine the collective set of supported voice interactions based on the first set of supported voice interactions and the second set of voice interactions; and

instruct an external speech engine to recognize voice input corresponding to the collective set of voice interactions.

16. The computer of claim 15 , wherein the at least one processor is further programmed to:

associate a first agent with the first frame and a second agent with the second frame, wherein the first agent is configured to monitor first events associated with the first frame and the second agent is configured to monitor second events associated with the second frame; and

wherein the first current context of the first web application is determined based, at least in part, on the first events and the second current context of the second web application is determined based, at least in part on the second events.

17. The computer of claim 15 , wherein the collective set of supported voice interactions comprises a union of the supported voice interactions in the first set and the second set.

18. The computer of claim 15 , wherein the collective set of supported voice interactions includes less than all of the supported voice interactions in the first set and the second set.

19. The computer of claim 15 , wherein determining the first set of supported voice interactions comprises determining an identity of the first web application.

20. The computer of claim 19 , wherein determining the identity of the first web application is performed based, at least in part, on an identifier for a web page of the first web application.