Method of controlling view of large expansion tree

• US 6,380,957 B1
• Filed: 12/15/1998
• Issued: 04/30/2002
• Est. Priority Date: 12/15/1998
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Banning, Kenneth Ray
• Primary Examiner(s): Bayerl, Raymond J.
• Assistant Examiner(s): Nguyen, Thomas T.
• Application Number:
  US09/211,352
• Time in Patent Office: 1,232 Days
• Field of Search: 345/352, 345/353, 345/356, 345/357, 345/326, 345/339
• US Class Current: 715/828
• CPC Class Codes: G06F 16/168 Details of user interfaces specifically adapted to file systems, e.g. browsing and visualisation, 2d or 3d GUIs query results presentation G06F16/156
• CPC Class Codes: G06F 3/0481 based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
• CPC Class Codes: G06F 3/0482 Interaction with lists of selectable items, e.g. menus

Abstract

A method of viewing a directory tree containing logical file system objects residing on a computer system, by displaying a directory tree on a display device of the computer system utilizing a graphical user interface (GUI), expanding a first node of the tree to reveal one or more branches of the first node, and then later expanding a second node of the tree to reveal one or more branches of the second node, wherein the invention automatically collapses the first node of the tree to conceal the one or more branches of the first node in response to the expanding of the second node. This automatic collapsing of other nodes that are not in the path of the selected node thus limits overall expansion of the tree. The setting may be toggled between enabled and disabled states. A pull-down menu can be provided by the GUI which contains the “limit expansion” command.

Claims

1. A method of viewing a directory tree containing logical file system objects residing on a computer system, comprising the steps of:

displaying a directory tree on a display device of the computer system utilizing a graphical user interface;

enabling limitation of expansion of nodes;

expanding a first node of the tree to reveal one or more branches of the first node;

expanding a second node of the tree to reveal one or more branches of the second node;

wherein the second node is located on a path in the directory tree and the first node is determined to not be on the path of the second node; and

automatically collapsing the first node of the tree to conceal the one or more branches of the first node in response to said expanding of the second node, whereby only a single one of said first and said second node is displayed at a given time.

2. The method of claim 1 further comprising the step of setting a predetermined tree depth up to which node expansion is to be allowed.

3. The method of claim 1 further comprising the step of setting only a certain number of sibling nodes of the tree that can be expanded.

4. The method of claim 1 further comprising the steps of:

collapsing the second node of the tree to conceal the one or more branches of the second node; and

automatically expanding the first node of the tree to again reveal the one or more branches of the first node in response to said collapsing of the second node.

5. The method of claim 1 further comprising the step of displaying a pull-down menu containing a limit expansion command on the display device of the computer system.

6. The method of claim 5 further comprising the step of selecting the limit expansion command from the pull-down menu using a graphical pointing device.

7. A computer system comprising:

a display device;

a storage device;

means, connected to said display device and said storage device, for processing program instructions; and

program instructions, stored on said storage device, for (i) displaying a directory tree on said display device wherein the tree contains logical file system objects residing on the computer system, (ii) enabling and disabling of limitation of expansion of nodes of the tree, and (iii) automatically collapsing a first node of the tree to conceal one or more revealed branches of the first node in response to selection of a second node of the tree for expansion, wherein the second node is located on a path in the directory tree and a determination is made that the first node in not on the path of the second node, whereby only a single one of said first and said second node is displayed at a given time.

8. The computer system of claim 7 wherein said program instructions further set a predetermined tree depth up to which node expansion is to be allowed.

9. The computer system of claim 7 wherein said program instructions further set only a certain number of sibling nodes of the tree that can be expanded.

10. The computer system of claim 7 wherein said program instructions further automatically expand the first node of the tree to again reveal the one or more branches of the first node in response to collapsing of the second node.

11. The computer system of claim 7 wherein said program instructions further display a pull-down menu containing a limit expansion command on the display device of the computer system.

12. The computer system of claim 11 wherein said program instructions further allow the selection of the limit expansion command from the pull-down menu using a graphical pointing device.

13. A computer program product comprising:

a storage medium adapted to be read by a computer; and

program means stored on said storage medium for (i) displaying a directory tree on a display device of the computer system wherein the tree contains logical file system objects residing on the computer system, (ii) enabling and disabling of limitation of expansion of nodes of the tree, and (iii) automatically collapsing a first node of the tree to conceal one or more revealed branches of the first node in response to selection of a second node of the tree for expansion, wherein the second node is located on a path the directory tree and a determination is made that the first node in not on the path of the second node, whereby only a single one of said first and said second node is displayed at a given time.

14. The computer program product of claim 13 wherein said program means further sets a predetermined tree depth up to which node expansion is to be allowed.

15. The computer program product of claim 13 wherein said program means further sets only a certain number of sibling nodes of the tree that can be expanded.

16. The computer program product of claim 13 wherein said program means further automatically expands the first node of the tree to again reveal the one or more branches of the first node in response to collapsing of the second node.

17. The computer program product of claim 13 wherein said program means further displays a pull-down menu containing a limit expansion command on the display device of the computer system.

18. The computer program product of claim 17 wherein said program means further allows the selection of the limit expansion command from the pull-down menu using a graphical pointing device of the computer system.