SYSTEM, METHOD, AND PROGRAM FOR EXECUTING APPLICATIONS

• US 20090210819A1
• Filed: 02/10/2009
• Published: 08/20/2009
• Est. Priority Date: 02/18/2008
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Mitsui, Kinichi, Sakuma, Yuhki, Kumagai, Ken, Fujimoto, Shunsuke
• Granted Patent: US 8,516,389 B2
• Time in Patent Office: Days
• US Class Current: 715/784
• CPC Class Codes: G06F 3/0485 Scrolling or panning
• CPC Class Codes: G06F 40/18 of spreadsheets form-filling G06F40/174

Abstract

An application is executed which provides a grid display and which includes: a spreadsheet generator for generating a screen comprising a group of display elements; a scroll controller for accepting a scroll operation of a screen displayed on a display device and for controlling the scrolling of the screen. If a cell is excluded from and a cell is newly included in a visible region displayed on the display device as a result of a scrolling operation, the scroll controller causes the cell included in the visible region to be displayed on the display device by modifying a content of an attribute, including location information, of a display element used to display the cell excluded from the visible region to a content for displaying the cell included in the visible region.

Claims

1. A system for executing an application which provides a grid display, comprising:

a screen generator for generating a screen divided into a grid pattern comprising a group of display elements;

a display unit for displaying the screen generated by the screen generator on a display device; and

a scroll controller for accepting a scrolling operation of the screen displayed on the display device and controlling the scrolling of the screen, wherein

if a cell is excluded from a visible region displayed on the display device and a cell is newly included in the visible region as a result of the scrolling operation, the scroll controller causes the cell that is included in the visible region to be displayed on the display device by modifying a content of an attribute of a display element that is used to display the cell that is excluded from the visible region to a content of the attribute of the display element that is used to display the cell that is included in the visible region, wherein the content of the attribute includes location information.

2. The system according to claim 1, wherein, if a number of cells included in the visible region is larger than a number of cells excluded from the visible region, the scroll controller generates new display elements of a number equal to a difference between the number of cells included and the number of cells excluded, and causes the cells included in the visible region to be displayed on the display device using the generated new display elements.

3. The system according to claim 1 wherein, if cells are arranged on the screen in a matrix and cells constituting at least one column are excluded from the visible region while cells constituting at least one column are newly included in the visible region as a result of another scrolling operation, the scroll controller modifies attributes of the display elements of the cells constituting the at least one column that is excluded from the visible region according to a correspondence between positions in a row direction of the cells constituting the at least one column that is included in the visible region and positions in the row direction of the cells constituting the at least one column that is excluded from the visible region.

4. The system according to claim 1 wherein, if cells are arranged on the screen in a matrix and cells constituting at least one row are excluded from the visible region while cells constituting at least one row are newly included in the visible region as a result of another scrolling operation, the scroll controller modifies attributes of the display elements of the cells constituting the at least one row that is excluded from the visible region according to a correspondence between positions in a column direction of the cells constituting the at least one row that is included in the visible region and positions in the column direction of the cells constituting the at least one row that is excluded from the visible region.

5. The system according to claim 1, wherein, if the screen contains a concatenated cell comprising a plurality of cells handled as a single cell, the scroll controller modifies attributes of the display elements of a set of cells, detects cells from the set of cells having constituted the concatenated cell before scrolling, and resets the attributes of the display elements of the detected cells to contents for displaying a part of the concatenated cell to be displayed on the screen after the scrolling.

6. The system according to claim 1, wherein the screen generator calculates a maximum value of a number of cells to be displayed at once on the screen based on a size of the screen and a size of each of the cells, and wherein the screen generator generates the screen by generating the display elements of the number of cells specified by the calculated maximum value.

7. A method for controlling display of an application which provides a grid display by use of a computer, the method comprising:

generating a screen divided into a grid pattern comprising a group of display elements;

displaying the screen on a display device;

accepting a scrolling operation of the screen displayed on the display device; and

if a cell is excluded from a visible region displayed on the display device and a cell is newly included in the visible region, displaying the cell that is included in the visible region on the display device by modifying a content of an attribute of a display element that is used to display the cell that is excluded from the visible region to a content of the attribute of the display element that is used to display the cell that is included in the visible region, wherein the content of the attribute includes location information.

8. The method according to claim 7, further comprising:

if a number of cells included in the visible region is larger than a number of cells excluded from the visible region,

generating new display elements of a number equal to a difference between the number of cells included and the number of cells excluded; and

displaying the cells included in the visible region on the display device using the generated new display elements.

9. The method according to claim 7, further comprising:

if cells are arranged on the screen in a matrix and cells constituting at least one column are excluded from the visible region while cells constituting at least one column are newly included in the visible region as a result of another scrolling operation, modifying attributes of the display elements of the cells constituting the at least one column that is excluded from the visible region according to a correspondence between positions in a row direction of the cells constituting the at least one column that is included in the visible region and positions in the row direction of the cells constituting the at least one column that is excluded from the visible region.

10. The method according to claim 7, further comprising:

if cells are arranged on the screen in a matrix and cells constituting at least one row are excluded from the visible region while cells constituting at least one row are newly included in the visible region as a result of another scrolling operation, modifying attributes of the display elements of the cells constituting the at least one row that is excluded from the visible region according to a correspondence between positions in a column direction of the cells constituting the at least one row that is included in the visible region and positions in the column direction of the cells constituting the at least one row that is excluded from the visible region.

11. The method according to claim 7 further comprising:

if the screen contains a concatenated cell comprising a plurality of cells handled as a single cell,

modifying attributes of the display elements of a set of cells;

detecting cells from the set of cells having constituted the concatenated cell before scrolling; and

resetting the attributes of the display elements of the detected cells to contents for displaying a part of the concatenated cell to be displayed on the screen after the scrolling.

12. The method according to claim 7, further comprising:

calculating a maximum value of a number of cells to be displayed at once on the screen based on a size of the screen and a size of each of the cells; and

generating the display elements of the number of cells specified by the calculated maximum value.

13. A program stored in a storage medium, wherein the program causes a computer causing a computer to:

generate a screen divided into a grid pattern comprising a group of display elements;

display the screen on a display device; and

accept a scrolling operation of the screen displayed on the display device; and

if a cell is excluded from a visible region displayed on the display device and a cell is newly included in the visible region as a result of the scrolling operation, displaying the cell that is included in the visible region on the display device by modifying a content of an attribute of a display element that is used to display the cell that is excluded from the visible region to a content of the attribute of the display element that is used to display the cell that is included in the visible region, wherein the content of the attribute includes location information.

14. The program according to claim 13, wherein the program causes the computer to:

if a number of cells included in the visible region is larger than a number of cells excluded from the visible region,

generate new display elements of a number equal to a difference between the number of cells included and the number of cells excluded; and

display the cells included in the visible region on the display device using the generated new display elements.

15. The program according to claim 13, wherein the program causes the computer to:

if cells are arranged on the screen in a matrix and cells constituting at least one column are excluded from the visible region while cells constituting at least one column are newly included in the visible region as a result of another scrolling operation, modify attributes of the display elements of the cells constituting the at least one column that is excluded from the visible region according to a correspondence between positions in a row direction of the cells constituting the at least one column that is included in the visible region and positions in the row direction of the cells constituting the at least one column that is excluded from the visible region.

16. The program according to claim 13, wherein the program causes the computer to:

if cells are arranged on the screen in a matrix and cells constituting at least one row are excluded from the visible region while cells constituting at least one row are newly included in the visible region as a result of a scrolling operation, modify attributes of the display elements of the cells constituting the at least one row that is excluded from the visible region according to the correspondence between positions in a column direction of the cells constituting the at least one row that is included in the visible region and positions in the column direction of the cells constituting the at least one row that is excluded from the visible region.

17. The program according to claim 13, wherein the program causes the computer to:

if the screen contains a concatenated cell comprising a plurality of cells handled as a single cell,

modify attributes of the display elements of a set of cells;

detect cells from the set of cells having constituted the concatenated cell before scrolling; and

reset the attributes of the display elements of the detected cells to contents for displaying a part of the concatenated cell to be displayed on the screen after the scrolling.

18. The program according to claim 13, wherein the program causes the computer to:

calculate a maximum value of a number of cells to be displayed at once on the screen based on a size of the screen and a size of each of the cells; and

generate the display elements of the number of cells specified by the calculated maximum value.