CONFLICT RESOLUTION OF CSS DEFINITION FROM MULTIPLE SOURCES

• US 20130174021A1
• Filed: 12/24/2012
• Published: 07/04/2013
• Est. Priority Date: 01/02/2012
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: BUCHWALD, JAN-PAUL, SCHNITZLER, PETER B.
• Granted Patent: US 10,241,984 B2
• Time in Patent Office: Days
• US Class Current: 715/235
• CPC Class Codes: G06F 40/154 Tree transformation for tree-structured or markup documents, e.g. XSLT, XSL-FO or stylesheets

Abstract

Conflict resolution of cascading style sheet definitions from multiple sources includes storing a rule for a rewriting of cascading style sheet definitions and intercepting, within a proxy component including a processor, a client server communication of a web page request, wherein the web page request originates from a client, and wherein a response to the web page request includes at least two cascading style sheet definitions. At least one of the two cascading style sheet definitions is rewritten based on the rule, resulting in non-conflicting cascading style sheet definitions. The non-conflicting cascading style sheet definitions are provided together with related content to the client.

Claims

1. A method of conflict resolution of cascading style sheet definitions from multiple sources, the method comprising:

storing a rule for a rewriting of cascading style sheet definitions;

intercepting, within a proxy component comprising a processor, a client server communication of a web page request, wherein the web page request originates from a client, and wherein a response to the web page request comprises at least two cascading style sheet definitions;

rewriting at least one of the two cascading style sheet definitions based on the rule, resulting in non-conflicting cascading style sheet definitions; and

providing the non-conflicting cascading style sheet definitions together with related content to the client.

2. The method of claim 1, wherein the proxy component stores a temporary model adapted for representing cascading style sheet definitions.

3. The method of claim 2, wherein the temporary model is based on a tree structure.

4. The method of claim 3, wherein the tree structure comprises elements consisting of a cascading style sheet selector, a value, and a cascading style sheet source association indicative of one of the multiple sources.

5. The method of claim 1, wherein the rule for a rewriting of at least one of the two cascading style sheet definitions comprises a first specification for an over-write of the first cascading style sheet definition by the second cascading style sheet definition based on source associations of the two cascading style sheet definitions indicating ones of the multiple sources.

6. The method of claim 1, wherein the rule for a rewriting of the one of the two cascading style sheet definition comprises a second specification for a parallel usage of the first cascading style sheet definition and the second cascading style sheet definition based on source associations of the two cascading style sheet definitions indicating ones of the multiple sources.

7. The method of claim 1, wherein the rule takes content elements of the two cascading style sheet definitions as input parameters.

8. The method of claim 1, wherein the multiple sources are grouped into categories, such that all members of a specific category are treated equally when applying the rules.

9. A system for conflict resolution of cascading style sheet definitions from multiple sources, the system comprising:

a processor programmed to initiate executable operations comprising;

storing a rule for a rewriting of cascading style sheet definitions;

intercepting a client server communication of a web page request, wherein the web page request originates from a client, and wherein a response to the web page request comprises at least two cascading style sheet definitions;

rewriting at least one of the two cascading style sheet definitions based on the rule, resulting in non-conflicting cascading style sheet definitions; and

providing the non-conflicting cascading style sheet definitions together with related content to the client.

10. The system of claim 9, comprising a memory storing a temporary model adapted for representing cascading style sheet definitions.

11. The system of claim 10, wherein the temporary model is based on a tree structure.

12. The system of claim 11, wherein the tree structure comprises elements consisting of a cascading style sheet selector, a value, and a cascading style sheet source association indicative of one of the multiple sources.

13. The system of claim 9, wherein the rule for a rewriting of at least one of the two cascading style sheet definitions comprises a first specification for an over-write of the first cascading style sheet definition by the second cascading style sheet definition based on source associations of the two cascading style sheet definitions indicating ones of the multiple sources.

14. The system of claim 9, wherein the rule for a rewriting of the one of the two cascading style sheet definition comprises a second specification for a parallel usage of the first cascading style sheet definition and the second cascading style sheet definition based on source associations of the two cascading style sheet definitions indicating ones of the multiple sources.

15. The system of claim 9, wherein the rule takes content elements of the two cascading style sheet definitions as input parameters.

16. The system of claim 9, wherein the multiple sources are grouped into categories, such that all members of a specific category are treated equally when applying the rules.

17. A computer program product for conflict resolution of cascading style sheet definitions from multiple sources, the computer program product comprising a computer readable storage medium having program code stored thereon, the program code executable by a processor to perform a method comprising:

storing, using the processor, a rule for a rewriting of cascading style sheet definitions;

intercepting, using the processor, a client server communication of a web page request, wherein the web page request originates from a client, and wherein a response to the web page request comprises at least two cascading style sheet definitions;

rewriting, using the processor, at least one of the two cascading style sheet definitions based on the rule, resulting in non-conflicting cascading style sheet definitions; and

providing, using the processor, the non-conflicting cascading style sheet definitions together with related content to the client.

18. The computer program product of claim 17, wherein the method further comprises:

storing a temporary model adapted for representing cascading style sheet definitions.

19. The computer program product of claim 18, wherein the temporary model is based on a tree structure.

20. The computer program product of claim 19, wherein the tree structure comprises elements consisting of a cascading style sheet selector, a value, and a cascading style sheet source association indicative of one of the multiple sources.

21. The computer program product of claim 17, wherein the rule for a rewriting of at least one of the two cascading style sheet definitions comprises a first specification for an over-write of the first cascading style sheet definition by the second cascading style sheet definition based on source associations of the two cascading style sheet definitions indicating ones of the multiple sources.

22. The computer program product of claim 17, wherein the rule for a rewriting of the one of the two cascading style sheet definition comprises a second specification for a parallel usage of the first cascading style sheet definition and the second cascading style sheet definition based on source associations of the two cascading style sheet definitions indicating ones of the multiple sources.

23. The computer program product of claim 17, wherein the rule takes content elements of the two cascading style sheet definitions as input parameters.

24. The computer program product of claim 17, wherein the multiple sources are grouped into categories, such that all members of a specific category are treated equally when applying the rules.