Browser-level background page for providing multiple views

1. A method for implementing web applications, comprising:

projecting, using a processor of a computing device, one element of a web page of a web application into a view of the web page, the view being a visual representation of a model of the web page, the model including application data and rules, wherein the web application is associated with a browser-level background page that lacks a user interface of its own and that acts as a container for all views of the web application, including the view of the web page, and wherein every window created by the web application shows a different view of the browser-level background page;

using a controller to mediate input and convert user input to the web application into commands for the view or the model; and

transposing, by the controller, the one element projected in the view of the web page and another element using an insertion point that represents a defined location in a shadow document object model subtree, without affecting a document object model tree of the web page.

2. The method of claim 1 , wherein the browser-level background page is unaffected by any currently displayed view.

3. The method of claim 1 , wherein the browser-level background page includes an HTML document.

4. The method of claim 1 , wherein the one element and the another element are HTML content elements.

5. The method of claim 1 , wherein matching criteria are provided by the insertion point for its child nodes to specify whether a given node could be distributed to a given insertion point.

6. The method of claim 1 , wherein the shadow document object model subtree is hosted by an element in the document model tree of the web page.

7. A computing system comprising:

a memory storing executable instructions; and

a processor operably coupled to the memory and configured to execute the instructions to:

project one element of a web page of a web application into a view of the web page, the view being a visual representation of a model of the web page, the model including application data and rules, wherein the web application is associated with a browser-level background page that lacks a user interface of its own and that acts as a container for all views of the web application, including the view of the web page, and wherein every window created by the web application shows a different view of the browser-level background page;

use a controller to mediate input and convert user input to the web application into commands for the view or the model; and

transpose, by the controller, the one element projected in the view of the web page and another element using an insertion point that represents a defined location in a shadow document object model subtree, without affecting a document object model tree of the web page.

8. The computing system of 7 , wherein the browser-level background page is unaffected by any currently displayed view.

9. The computing system of 7 , wherein the browser-level background page includes an HTML document.

10. The computing system of 7 , wherein the one element and the another element are HTML content elements.

11. The computing system of 7 , wherein matching criteria are provided by the insertion point for its child nodes to specify whether a given node could be distributed to a given insertion point.

12. The computing system of 7 , wherein the shadow document object model subtree is hosted by an element in the document model tree of the web page.