USER INTERFACE STATE SAVING AND RESTORATION

• US 20160342478A1
• Filed: 05/21/2015
• Published: 11/24/2016
• Est. Priority Date: 05/21/2015
• Status: Active Grant

• Current Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Original Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Inventors: Fryc, Lukas
• Granted Patent: US 9,946,601 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 11/1438 Restarting or rejuvenating
• CPC Class Codes: G06F 11/36 Preventing errors by testing or debugging software
• CPC Class Codes: G06F 11/3604 Software analysis for verifying properties of programs byte-code verification G06F9/44589
• CPC Class Codes: G06F 2201/84 Using snapshots, i.e. a logical point-in-time copy of the data

Abstract

Methods, systems, and computer program products are included to persist a state of an application to a memory and to restore the state of the application from the memory. The method includes leveraging two-way binding between a model and a view of the application in order to persist at least a portion of the model to the memory as a state. The persisting of the model to the memory may be performed automatically. This state may later be restored and applied to the model. Updates to the model based on the state restoration are propagated to the view, thereby restoring at least a portion of the view to its appearance at the time the model was persisted to the memory.

Claims

1. A computer-implemented method for user interface state saving and restoration, the method comprising:

receiving a first data value from a user, the first data value corresponding to an element of a view;

propagating the first data value to a property of a model;

detecting a first event, the first event corresponding to the view;

identifying one or more properties corresponding to the model, the one or more properties including the property;

serializing the one or more properties to a memory as a stored model;

associating the stored model with a state identifier;

detecting a second event;

deserializing the stored model, the deserializing including applying one or more data values of the stored model to the one or more properties; and

propagating a data value of the one or more data values to the element of the view, wherein the data value corresponds to the first data value.

2. The method of claim 1, wherein the second event is associated with a second state identifier.

3. The method of claim 2, the detecting of the second event further comprising:

determining that the state identifier matches the second state identifier; and

restoring the stored model.

4. The method of claim 2, wherein the state identifier is stored in a database in the memory as a key, wherein the stored model is stored in the database, wherein the database associates the key with the stored model.

5. The method of claim 1, the identifying of the one or more properties corresponding to the model further comprising at least one of the following:

(i) comparing a current data value of each of the one or more properties with a previous data value of each of the one or more properties and (ii) listening for a data value change corresponding to at least one of the one or more properties.

6. The method of claim 1, wherein the memory is a runtime memory.

7. The method of claim 1, wherein the memory is a persistent memory.

8. The method of claim 1, further comprising:

binding the element to the property, wherein the binding is a two-way binding.

9. The method of claim 1, wherein the first event corresponds to at least one of:

(i) closing a window, (ii) sending the first data value to another machine, and (iii) receiving or modifying the first data value.

10. A non-transitory computer-readable medium, comprising computer-readable instructions for user interface state saving and restoring leveraging two-way data-binding, the computer-readable instructions executable by a processor to cause the processor to:

propagate a user input from a first element of a view to a first property of a model;

detect a first event;

based on the first event, trigger a persist state operation, the persist state operation including;

identifying one or more properties corresponding to an active model, the one or more properties including the first property;

storing the one or more properties in a memory as a state, the storing including serializing the one or more properties; and

associating the state with a state identifier;

detect a second event;

based on the second event, trigger a restore state operation, the restore state operation including;

applying the state to the model, the applying including deserializing the state to obtain the one or more properties; and

propagating the one or more properties to one or more elements of the view, the one or more elements including the first element.

11. The medium of claim 10, wherein the second event is associated with a second state identifier;

the detecting of the second event further comprising;

determining that the state identifier is a match with the second state identifier; and

based on the determining of the match, selecting the state.

13. The medium of claim 10, the identifying of the one or more properties corresponding to the active model further comprising at least one of the following:

(i) comparing a current data value of each of the one or more properties with a previous data value of each of the one or more properties and (ii) listening for a data value change corresponding to at least one of the one or more properties.

14. The medium of claim 10, wherein the first event corresponds to a sending of a data value to another machine.

12. The medium of 10, wherein the memory includes a database, wherein the state identifier is stored in the database as a key, wherein the state is stored in the database as a value associated with the key.

15. A system including a user interface, the system comprising:

a processor and a memory;

an application including a model, a view, and a two-way binding between the model and the view;

the view to receive a user input;

the model to store the user input as a first property;

the application further including a state manager, the state manager executed by the processor to;

retrieve one or more properties of the model;

the one or more properties including the first property;

serialize and store the one or more properties in the memory as a state; and

deserialize the one or more properties from the memory, the deserializing including applying the one or more properties to the model.

16. The system of claim 15, the applying further comprising:

propagating the one or more properties to one or more elements of the view.

17. The system of claim 15, wherein the state is associated with a state identifier,

wherein the deserializing includes determining that the state identifier matches a second state identifier.

18. The system of claim 17, wherein the memory includes a database, wherein the state identifier is stored in the database as a key, wherein the state is stored in the database, wherein the state is associated with the key.

19. The system of claim 15, the retrieving of the one or more properties of the model further comprising:

selecting the one or more properties based on at least one of;

(i) comparing a current data value of each of the one or more properties with a previous data value of each of the one or more properties, and (ii) listening for a data value change corresponding to at least one of the one or more properties.

20. The system of claim 15, wherein the two-way binding comprises (i) a mapping of the one or more elements of the view to the one or more properties of the model and (ii) a mapping of the one or more properties of the model to one or more elements of the view.