Data control device, data control method, and computer-readable medium

A data control method comprising the steps of:

• executing, as an active runtime environment, one of a plurality of runtime environments each provided with an individual clipboard used for data reading and writing;
• switching the active runtime environment;
• when the active runtime environment is switched, determining whether an item of data written to a clipboard of a runtime environment that is active before the switching should be copied to a clipboard of a runtime environment that will become active after the switching, by referring to an attribute of at least one of the runtime environment that is active before the switching and the runtime environment that will become active after the switching;
• and
• managing copying of the item of data between the clipboards based on the decision made by the step of determining.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a data control method, the method comprising the steps of:

• executing, as an active runtime environment, one of a plurality of runtime environments each provided with an individual clipboard used for data reading and writing;
• switching the active runtime environment;
• when the active runtime environment is switched, determining whether an item of data written to a clipboard of a runtime environment that is active before the switching should be copied to a clipboard of a runtime environment that will become active after the switching, by referring to an attribute of at least one of the runtime environment that is active before the switching and the runtime environment that will become active after the switching;
• and
• managing copying of the item of data between the clipboards based on the decision made by the step of determining.

A data control device comprising:

• a control unit configured to execute a plurality of programs, the control unit comprising:
• an execution unit that executes, as an active runtime environment, one of a plurality of runtime environments each provided with an individual clipboard used for data reading and writing;
• a switching unit that switches the active runtime environment;
• and
• a management unit that, when the active runtime environment is switched by the switching unit, manages copying of an item of data written to a first clipboard of a runtime environment that is active before the switching to a second clipboard of a runtime environment that will become active after the switching,
• wherein in a case where the switching is conducted in response to an operation performed by a user, the management unit performs copying of the item of data written to the first clipboard to the second clipboard, and in a case where the switching is not conducted in response to an operation performed by a user, the management unit does not perform copying of the item of data written to the first clipboard to the second clipboard.