JP4604891B2 - Tree structure display program, tree structure display method, tree display environment setting method, tree structure display device - Google Patents

Description

  The present invention relates to display of a node having a tree structure in a system that handles information forming a hierarchical relationship, such as a computer file management system or a program structure display system.

  Depending on the information handled, it may be convenient to form and maintain a hierarchical relationship. For example, when a file is stored as information to be handled in a storage device such as a hard disk connected to a computer, the user is hierarchically related based on the file type, content, etc. using the functions of the file management system. Sort and save files in a directory. In addition, since a hierarchical relationship such as a directory and a file is formed, what is displayed in a tree is generically called a “node”. Nodes held and managed by the storage device can be displayed on the screen by a function such as an operation system (OS) file management system. However, if a large number of nodes are stored in the storage device, all the nodes are displayed on one screen. Cannot be displayed simultaneously. As a tool for displaying a node on the screen, there is an explorer provided as a standard in Windows (registered trademark) of Microsoft Corporation. In the case of using a known tool such as this explorer, the user usually scrolls for the purpose. Will search for directories and files. As described above, when all the nodes cannot be displayed at once in a limited screen display area, various problems occur in visibility, operability, and the like. Techniques for solving such problems Have been proposed (for example, Patent Documents 1 to 5).

JP 2004-259286 A JP-A-3-58133 JP 2001-331358 A JP-A-5-189177 JP 2004-94765 A

  However, in the past, attempts have been made to solve the above problems by displaying a partial tree, improving the efficiency of display, simplifying the display tree, etc., but while achieving the desired effect, the tree structure has a lower hierarchy. Some problems remain depending on the usage situation, such as limiting the display of nodes and nodes displayed below, and it is difficult to say that the tree display is easy to use in all situations.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an improved tree display program, method, or apparatus that does not impair the list display performance of the hierarchical structure. is there.

To achieve the above object, a tree structure display program according to the present invention, a computer, a display processing means for screen display the nodes in the hierarchical relation in a tree structure, the scroll display area setting operation by Yu over THE In accordance with the scroll display node group to be scrolled from the displayed node tree and a first scroll display area that can be changed to a size specified by the user, and a part of the node tree is A first scroll display area for scroll-displaying the scroll display node group to be formed is set, and a second scroll that can be changed to a size designated by the user within the first scroll display area that has already been set. In the display area, a node located in a lower hierarchy of the node displayed in the first scroll display area is scanned. Scroll environment setting means for setting a second scroll display area scroll display as a role display nodes, in response to the scroll operation by the user in the first or second scroll display area, the in the scroll display area The scroll display node group functions as scroll display processing means for scroll-displaying , and the display processing means is adapted to change the size of the first or second scroll display area, and the scroll display area and the scroll display area. It is characterized in that the range of the tree of nodes displayed on the screen is changed outside .

In the first or second scroll display area, the scroll display node group is caused to function as a user interface control processing means for displaying a scroll bar for scrolling the user.

The user interface control processing means displays the set position of the first or second scroll display area so as to be visible.

Further, the user interface control processing means displays a range indicator capable of specifying the first or second scroll display area instead of the scroll bar.

  Further, the user interface control processing means switches and displays the scroll bar and the range indicator according to the display switching operation by the user.

Further, the user interface control processing means scrolls according to the distance between the display position of the first or second scroll display area and the cursor position on the screen of the user operation means used when the user performs scroll display. Automatically switch the display between the bar and range indicator.

Further, the scroll environment setting processing means changes the set first or second scroll display area in response to a scroll display area change operation by the user.

The scroll environment setting processing means displays scroll display area change symbols at both ends in the scroll direction of the displayed first or second scroll display area, and operates the scroll display area change symbols. The user is allowed to set the first or second scroll display area.

In addition, the user interface control processing means, depending on the distance between the display position of the first or second scroll display area and the cursor position on the screen of the user operation means used when the user performs scroll display, Automatically displays / hides the scroll display area changing symbol.

Further, the scroll environment setting processing means temporarily holds setting information related to the set first or second scroll display area in the setting information holding means, and the scroll display area changing operation by the user is interrupted halfway. In this case, the setting information is read from the setting information holding means, and the first or second scroll display area is returned to the previous setting content.

Further, the computer has an all-expanded display mode in which all nodes located in a lower hierarchy of a node displayed on the screen are expanded and displayed, a non-expanded display mode in which a node located in a lower hierarchy of the node is hidden, Function as mode switching processing means for switching a partially expanded display mode for partially displaying a node located in a lower hierarchy of the node in the second scroll display area corresponding to the node according to a mode switching operation by the user Let

Tree structure display device according to the present invention includes a display processing means for screen display the nodes in the hierarchical relation in a tree structure, according to the scroll display area setting operation by Yu chromatography The scroll from the tree of the displayed nodes first to scroll the scroll display nodes forming part of the tree of a first scroll display area can be changed to a size designated by the scroll display nodes and user to be displayed node A scroll display area is set, and in the first scroll display area that has already been set, a second scroll display area that can be changed to a size specified by the user, and in the first scroll display area A second scroll that scrolls and displays nodes located in a lower hierarchy of the displayed node as a scroll display node group. The scroll configuration processing means for setting the Lumpur display area, in response to the scroll operation by the user in the first or second scroll display area, scrolling the scroll the scroll display nodes in the scroll display area have a display processing unit, said display processing means of the first or node to each screen display the scroll display area and outside the scroll display area following a change in the size of the second scroll area It is characterized by changing the range of the tree .

In the first or second scroll display area, there is provided user interface control processing means for displaying a scroll bar for causing the user to scroll-display the scroll display node group.

In addition, there is setting information holding means for temporarily holding setting information related to the first or second scroll display area, and the scroll environment setting processing means, when the scroll display area changing operation by the user is interrupted halfway, The setting information is read from the setting information holding means, and the first or second scroll display area is returned to the previous setting contents.

In addition, all expanded display modes in which all the nodes located in the lower hierarchy of the node displayed on the screen are expanded and displayed, non-expanded display mode in which the nodes located in the lower hierarchy of the node are hidden, and the corresponding node are associated with each other. And a mode switching processing means for switching a partial expansion display mode for partially displaying a node located in a lower hierarchy of the node in the second scroll display area in accordance with a mode switching operation by a user. To do.

  According to the present invention, an area to be partially scrolled can be set in the screen display area, so that a tree display can be performed in a state in which the list of nodes having a hierarchical relationship is maintained.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a hardware configuration diagram of a computer corresponding to a tree display device according to the present invention. The computer 1 used in the present embodiment can be realized with a general-purpose hardware configuration that has existed in the past. That is, as shown in FIG. 1, the computer 1 is provided with a CPU 2, a ROM 4, a RAM 6, an HDD controller 10 connected to a hard disk drive (HDD) 8, a mouse 12 and a keyboard 14 provided as input means, and a display device. An input / output controller 18 for connecting each display 16 is connected to an internal bus 20.

  FIG. 2 is a functional block configuration diagram of the computer 1 in the present embodiment. The computer 1 includes a file management system capable of managing nodes in a hierarchical relationship and displaying the hierarchical relationship of nodes on a display device in a tree structure, such as the Windows (registered trademark) system of Microsoft Corporation. It is assumed that it is equipped. In addition, the computer 1 includes a tree display processing unit 22 that displays nodes in a tree while using some functions of the OS. The tree display processing unit 22 is a means for performing the entire display processing including the tree display in the tree display device, but the tree display processing unit 22 in the present embodiment includes the scroll environment setting processing unit 24, the scroll display processing, and the like. The unit 26 and the user interface (UI) control processing unit 28 perform characteristic processing. The scroll environment setting processing unit 24 scrolls the scroll display node group to be scrolled and displayed on the screen according to the scroll display area setting operation by the user from the tree displayed on the screen. Set the display area. The scroll display processing unit 26 scrolls and displays the scroll display node group in the scroll display area set by the scroll environment setting processing unit 24 in response to a scroll operation by the user. The user interface control processing unit 28 is necessary for symbols and scrolling to be operated by the user, such as setting and displaying a scroll bar and various operation buttons corresponding to the scroll display area set by the scroll environment setting processing unit 24. Control display of information. The node information storage unit 30 stores information necessary for displaying a tree of nodes. The setting information storage unit 32 temporarily stores setting information regarding the scroll display area set by the scroll environment setting processing unit 24.

  In the present embodiment, the node information storage unit 30 holds information related to the nodes necessary for the implementation of the present embodiment. However, it is necessary to store these necessary information in storage means inside the computer. For example, the information may be obtained via a network. Further, it is assumed that the node information storage unit 30 illustrated in FIG. 2 is realized by the HDD 8 illustrated in FIG. Of course, necessary data may be copied to the RAM 6 before use.

  The processing function in the tree display processing unit 22 is realized by a cooperative operation between the computer 1 and one or more tree structure programs that realize the processing function.

  Next, the operation of the present embodiment will be described. In this embodiment, the environment setting process that enables partial scroll display and the process that performs partial scroll display in the set environment can be broadly divided. The former environment setting process will be described with reference to the flowchart shown in FIG. 3 and screen display examples in FIG.

  Here, as an example, Explorer in Microsoft (registered trademark) of Microsoft Corporation is used as a model case. In each display example used in the following description, “desktop” is a node located in the highest hierarchy of the hierarchical structure. In the following description, “folder” and “node” are synonymous.

  The tree display processing unit 22 first reads out information related to the node registered in the node information storage unit 30, and performs tree display using a standard tree display processing function (step 110). A display example at this time is shown in FIG. In this display example, child nodes of “local disk 0 (E :)” are expanded and displayed. Needless to say, the hierarchical relationship between the nodes can be grasped by a straight line connecting the node icons (hereinafter referred to as “branches”), and the node icon of “local disk 0 (E :)”. Since the minus button 42 is displayed at the portion connecting the to the branch 44, it can be understood that “local disk 0 (E :)” is expanded and displayed.

  In the state shown in FIG. 4, the user moves the mouse cursor (not shown) near the branch 44 connecting “local disk 0 (E :)” and “control panel” in a continuous positional relationship on the same hierarchy. Then, the scroll bar 46 and triangle-shaped scroll display area changing symbols 48a and 48b are displayed on both ends of the scroll bar so as to overlap with the branches 44. A display example at this time is shown in FIG.

  That is, the tree display processing unit 22 constantly monitors the cursor position on the screen of the mouse that is the user operation means. When it is detected that the mouse cursor has approached the display position of the branch 44, the scroll environment setting processing unit 24 displays the scroll bar 46 and the scroll display area changing symbols 48a and 48b on the screen as described above. Note that the timing for displaying the scroll bar or the like, that is, the distance between the mouse cursor position for displaying the scroll bar or the like and the display position of the branch may be set, but in this embodiment, for example, a right click for property display Use standard settings of Explorer such as the distance at which is valid.

  When setting the scroll display area, the scroll environment setting processing unit 24 needs to set a node group to be scrolled and the size of the scroll display area for displaying the node group. In the present embodiment, the nodes located between the nodes connected by the branch where the mouse cursor approaches are automatically set as the node group. In the example shown in FIGS. 4 and 5, the user moves the mouse cursor close to the branch 44 connecting the nodes “local disk 0 (E :)” and “control panel”. :) ”and“ control panel ”, the above-mentioned node group is constituted by each node from“ 2G-DST idea sheet ”to“ zip ”. Since “local disk 0 (E :)” is expanded and displayed at this point, the size of the scroll box 46 a indicating the range displayed in the scroll display area that has not yet been determined is the length of the scroll bar 46. It is displayed in a state equal to

  Here, as shown in FIG. 6, when the user drags the inverted triangle symbol 48b below the scroll bar 46 and moves it upward as indicated by the arrow 50, the scroll bar 46 is moved by the upward movement operation of the symbol 48b. Becomes shorter, and the scroll display area 52 for displaying the node group is narrowed. That is, in the display example of FIG. 5, the screen display only up to the “control panel” is displayed. As a result of the scroll display region 52 being narrowed by the upward movement operation of the symbol 48b, as shown in FIG. "My computer" and "Trash" located below the "panel" are displayed on the screen. Focusing on the inside of the scroll display area 52, it can be seen that the two nodes "work" and "zip" positioned below are not displayed because the scroll display area 52 is narrowed. As the scroll display area 52 becomes narrower, the size of the scroll box 46a indicating the display range in the scroll display area 52 gradually decreases. The user ends the setting of the scroll display area 52 by stopping dragging when the desired size is reached.

  The scroll environment setting processing unit 24 sets the scroll display area 52 according to the scroll display area setting operation by the user, that is, the drop operation by the user using the mouse (step 120). The scroll environment setting processing unit 24 writes the information related to the scroll display area 52 such as the node group set as the scroll display target set as described above, the size of the display area, and the like into the setting information storage unit 32 to store the information ( Step 130).

  In the present embodiment, the scroll display area 52 for partially displaying the node group that is the scroll display target as described above is set. In the present embodiment, a node group located in a lower hierarchy of the “local disk 0 (E :)” node in the set scroll display area 52 is partially displayed, so-called partial scroll display target. Therefore, the icon to be added to the portion connecting the node icon of “local disk 0 (E :)” to the branch 44 is a plus / minus button 56 to which a plus / minus symbol is added as shown in FIG. It was made to express that the child node was set as the target of the partial scroll display. In the present embodiment, as the tree display mode, conventionally used non-expanded display mode and full-expanded display mode indicated by the plus button and the minus button, and the present embodiment indicated by the plus / minus button 56 described above. A characteristic partial expansion display mode of the form is set. This tree display mode will be described later. In addition, since the icon that connects each branch and each node icon is an operation button for switching the tree display mode, these operation buttons are collectively referred to as a “connection unit operation button” in the following description.

  Thereafter, when it is detected that the mouse cursor has moved away from the vicinity of the branch 44, the user interface control processing unit 28 displays a range indicator 54 indicating the position where the scroll display area is set instead of the display position of the scroll bar. indicate. The scroll display area changing symbols 48a and 48b are switched to the non-display state. In the present embodiment, the range indicator 54 is represented by a black line drawn over the branch 44. Since the mouse cursor is not in the vicinity of the branch 44, the scroll bar displayed in a superimposed manner on the branch 44 is not actually operated. Therefore, the display is switched to the range indicator 54 as a simple display of the scroll bar. Thereby, the user can confirm at a glance whether the scroll display area 52 is set and the setting position. In terms of the system, simple display is effective in terms of display space on the screen, display processing load, and the like.

  Next, the tree display process in the partial scroll display area 52 will be described. When the mouse cursor approaches the branch 44 at the display position of the range indicator 54, the user interface control processing unit 28 starts from the range indicator 54 to the scroll bar 46. It is convenient for the user by automatically switching to the display. That is, when it is recognized that the mouse cursor has approached the range indicator 54, the screen display in which the range indicator 54 is displayed as in the display example of FIG. 7 is switched to the display on the scroll bar 46 shown in FIG. If the user wants to refer to a node not displayed in the scroll display area 52, the user can display a desired node on the screen by sliding the scroll box 46a of the displayed scroll bar 46.

  By the way, the environment setting process of the scroll display area described above using the screen display example is in the fully expanded display mode as apparent from the minus button 42 corresponding to the “local disk 0 (E :)” node in FIG. This is a procedure for setting the scroll display area. Hereinafter, a procedure for setting the scroll display area in the non-development display mode will be described. The setting process itself in the non-expanded display mode is basically the same as described above, but the user interface is slightly different because the node is not expanded and displayed.

  In the state shown in FIG. 7, when the user moves the mouse cursor near the plus button 60 corresponding to the “forXdrv” node for which a partial scroll display area is desired to be set, a triangular scroll display area above and below the plus button 60. The change symbols 58a and 58b are displayed. A display example at this time is shown in FIG. The symbols 58a and 58b are displayed at the positions and orientations indicating the scroll direction as in the full development display mode.

  That is, the tree display processing unit 22 constantly monitors the position of the mouse cursor on the screen as described above, but when it is detected that the mouse cursor approaches one of the plus buttons as in this example, The scroll environment setting processing unit 24 displays the scroll display area changing symbols 58a, 58b on the screen above and below the plus button, in this example, the plus button 60 corresponding to the “forXdrv” node.

  Here, as shown in FIG. 9, when the user drags the upper symbol 58a and moves it upward as indicated by the arrow 50, the scroll bar 62 appears and extends in conjunction with the upward movement operation of the symbol 58a. . The state of FIG. 8 can also be expressed as a scroll bar 62 having a length of 0 between the plus button 60 and the symbols 58a and 58b. In the display example of FIG. 8, the “desktop” in the highest hierarchy is displayed. As a result of the scroll display area 64 being expanded by the upward movement operation of this symbol 58a, “forXdrv” as shown in FIG. The display above the “node” moves upward, and “Desktop” and “My Document” are out of the screen and are not displayed. As the scroll display area 64 is expanded, the size of the scroll box 62a indicating the display range in the scroll display area 64 gradually increases. The user ends the setting of the scroll display area 64 by stopping dragging when the desired size is reached.

  The scroll environment setting processing unit 24 sets the scroll display area 64 according to the scroll display area setting operation by the user, that is, the drop operation by the user using the mouse (step 120). The scroll environment setting processing unit 24 stores the information related to the scroll display area 64 such as the node group set as the scroll display target set as described above and the size of the display area by writing it in the setting information storage unit 32 ( Step 130). In this way, the setting information storage unit 32 holds setting information for the number of scroll display areas that have been set.

  In the present embodiment, the partial scroll display area 64 is set in the non-development display mode as described above. Thereafter, when it is detected that the mouse cursor has moved away from the vicinity of the scroll bar 62, the user interface control processing unit 28 replaces the display position of the scroll bar 62 with a range indicator indicating the position where the scroll display area is set. 66 is displayed. Further, the scroll display area changing symbols 58a and 58b are not displayed. A display example at this time is shown in FIG. As described above, when the tree display mode is the partial expansion display mode, the position where the node icon “forXdrv” is pulled out is displayed by the plus / minus button 56.

  Next, the tree display process in the partial scroll display area 64 will be described. When the mouse cursor approaches the display position of the range indicator 66, the user interface control processing unit 28 displays the scroll bar 62 from the range indicator 66. Switch to automatically. Thus, the user can display a desired node on the screen by sliding the scroll box 46a of the displayed scroll bar 46. FIG. 11 shows an example in which the child node of the “forXdrv” node is scroll-displayed by moving the scroll box 46a upward.

  By the way, there may be a case where the user wants to change the size of the scroll display area 64 once set. In this case, the user displays the scroll display area changing symbols 58a and 58b above and below the plus / minus button by approaching the plus / minus button corresponding to the “forXdrv” node in the same manner as the scroll display area setting operation described above. Therefore, the size of the scroll display area 64 can be easily changed by performing a drop operation on the symbol 58a or the symbol 58b on the side whose size is to be changed.

  Further, there may be a case where the user wants to cancel the change while changing the size of the scroll display area 64. In such a case, since the setting contents immediately before the setting change are held in the setting information storage unit 32, the scroll environment setting processing unit 24 determines that the scroll display area changing operation is interrupted, that is, the area size is changed. Is canceled, the setting information of the corresponding scroll display area is read from the setting information storage unit 32, and the scroll display area is returned to the previous setting content. Thereby, even if it is canceled in the middle of the change operation, it is possible to prevent the occurrence of a problem.

  Next, the tree display mode set in the present embodiment will be described. In the present embodiment, as described above, the fully expanded display mode, the unexpanded display mode, and the partially expanded display node are set as the tree display mode. Yes. The all expanded display mode is a mode in which all the nodes located in the lower hierarchy of the node displayed on the screen are expanded and displayed, and the operation button for the connection part of the node displayed in the all expanded display mode is displayed with a minus button. . The unexpanded display mode is a mode in which the node icon displayed on the screen is hidden from the node located in the lower hierarchy of the node, and the operation button for the connecting portion of the node displayed in the unexpanded display mode is a plus button. Is displayed. The partial expansion display mode is a mode in which a node located in a lower hierarchy of the node in the scroll display area set by the scroll environment setting processing unit 24 is partially displayed, and is displayed in the partial expansion display mode. The connection part operation buttons of the nodes that are present are displayed as plus or minus buttons.

  In FIG. 12, since the “forXdrv” node is displayed in the fully expanded display mode in the lower hierarchy of the “local disk 0 (E :)” node displayed in the partial expanded display mode, the link operation button is a minus button. 42. When the user clicks the minus button 42, the “forXdrv” node is switched to the non-expanded display mode as shown in FIG. 13, and the connecting unit operation button is switched to the plus button 60 at the same time. Subsequently, when the user clicks the plus button 60, the “forXdrv” node is switched to the partial expansion display mode as shown in FIG. 14, and the connecting portion operation button is switched to the plus / minus button 56 at the same time. . Further, when the user clicks on the plus / minus button 56, the state returns to the state of the full development display mode shown in FIG. Thus, the tree display mode is sequentially switched by a mode switching operation by the user, in this example, by a click operation on the connection unit operation button.

  When the tree display processing unit 22 in the present embodiment detects a click operation on the connection unit operation button by the user, the tree display mode is sequentially switched as described above, and the user interface control processing unit 28 changes the mode. The display of the connection part operation button is switched in conjunction.

  According to the present embodiment, since an area to be partially scrolled can be set in the screen display area, a tree display can be performed without changing the arrangement order or display density of nodes in a hierarchical relationship. Can do. As a result, it is possible to maintain the list when the nodes having a hierarchical relationship are displayed in a tree form. In addition, the scroll display area for partially scrolling the node group can be set with a simple operation.

  In the present embodiment, the setting of the scroll display area that enables partial scroll display and the partial scroll display have been described, but the process of canceling the set scroll display area can of course be performed. . For example, the pop-up menu is displayed by causing the user to right-click in the vicinity of a node that is a target of partial scroll display in the display state in the partial expansion display mode. Then, cancel the setting is selected from the menu. In accordance with such a user operation, the corresponding scroll display area setting canceling process such as deletion of the corresponding setting information from the setting information storage unit 32 may be performed.

  In the partial scroll display area setting process in this embodiment, it is necessary to set a node group to be scrolled and the size of the scroll display area for displaying the node group. Of these, in the present embodiment, the former node group that is the target of scroll display is set to a node located in a lower hierarchy of a certain node so that a scroll bar is displayed over the branch 44 that the mouse cursor approaches. The whole was selected automatically. This is because the node group node is suitable for scrolling within the same scroll display area. However, it is not necessary to limit the nodes selected as a node group to be scrolled to a lower hierarchy of a certain node. Therefore, in the present embodiment, the node group is automatically selected according to the position of the mouse cursor, but the user may designate the node group to be scrolled.

  Further, although the present embodiment has been described with an example effective for displaying a node expanded in the vertical direction of the screen because the number of nodes is enormous, the node having a large number of layers and expanded in the horizontal direction of the screen It is also possible to apply to the display of.

It is a hardware block diagram which showed one Embodiment of the tree structure display apparatus which concerns on this invention. It is a functional block block diagram of the tree structure display apparatus in this Embodiment. It is the flowchart which showed the environment setting process in this Embodiment. It is the figure which showed the example of a screen display at the time of setting the scroll display area with respect to the node currently displayed by the all expansion display mode in this Embodiment. It is the figure which showed the example of a screen display at the time of setting the scroll display area with respect to the node currently displayed by the all expansion display mode in this Embodiment. It is the figure which showed the example of a screen display at the time of setting the scroll display area with respect to the node currently displayed by the all expansion display mode in this Embodiment. It is the figure which showed the example of a screen display after a scroll display area | region was set with respect to the node currently displayed by the all expansion | deployment display mode in this Embodiment. It is the figure which showed the example of a screen display at the time of setting the scroll display area with respect to the node currently displayed by the non-development display mode in this Embodiment. It is the figure which showed the example of a screen display at the time of setting the scroll display area with respect to the node currently displayed by the non-development display mode in this Embodiment. It is the figure which showed the example of a screen display after a scroll display area was set with respect to the node currently displayed by the non-development display mode in this Embodiment. It is the figure which showed the example of a screen display at the time of scroll-displaying the applicable node within the scroll display area | region set in this Embodiment. It is the figure which showed the example of a screen display when the node to which the scroll display area was set in this Embodiment was displayed by all the expansion display modes. It is the figure which showed the example of a screen display when the node to which the scroll display area was set in this Embodiment is displayed in non-expanded display mode. It is the figure which showed the example of a screen display when displaying the node to which the scroll display area was set in this Embodiment in partial expansion | deployment display mode.

Explanation of symbols

  1 computer, 2 CPU, 4 ROM, 6 RAM, 8 hard disk drive (HDD), 10 HDD controller, 12 mouse, 14 keyboard, 16 display, 18 I / O controller, 20 internal bus, 22 tree display processing unit, 24 scroll environment Setting processing unit, 26 Scroll display processing unit, 28 User interface control processing unit, 30 Node information storage unit, 32 Setting information storage unit, 42 Minus button, 46, 62 Scroll bar, 46a, 62a Scroll box, 48a, 48b, 58a , 58b Scroll display area change symbol, 52, 64 Scroll display area, 54, 66 Range indicator, 56 Plus / minus button, 60 Plus button.

Claims (15)

The computer,
Display processing means for displaying nodes in a hierarchical relationship on a screen in a tree structure;
Depending on the scroll display area setting operation by Yu chromatography The, the first scroll display area can be changed to a size designated by the scroll display nodes and user to scroll displayed from the tree of the displayed nodes A first scroll display area for scroll-displaying the scroll display node group forming a part of the node tree is set , and the size specified by the user in the first scroll display area that has already been set. A second scroll display area that can be changed to a second scroll display area that is scroll-displayed as a scroll display node group of nodes located in a lower hierarchy of the nodes displayed in the first scroll display area . Scroll environment setting processing means to be set;
The first or in response to a scroll operation by the user in the second scroll area, the scroll display processing means for scrolling the scroll display nodes in the scroll display area,
To function as,
The display processing means changes a tree range of nodes displayed on the screen in the scroll display area and outside the scroll display area in accordance with the change in the size of the first or second scroll display area. Feature tree structure display program. The tree structure display program according to claim 1, wherein the computer is:
A tree structure display program for functioning as user interface control processing means for displaying a scroll bar for allowing a user to scroll-display the scroll display node group in the first or second scroll display area. In the tree structure display program according to claim 2,
The user interface control processing means is a tree structure display program for displaying the set position of the first or second scroll display area so as to be visible. In the tree structure display program according to claim 2,
The user interface control processing means is a tree structure display program for displaying a range indicator capable of specifying the first or second scroll display area instead of a scroll bar. In the tree structure display program according to claim 4,
The user interface control processing means is a tree structure display program for switching and displaying a scroll bar and a range indicator in accordance with a display switching operation by a user. In the tree structure display program according to claim 4,
The user interface control processing means includes a scroll bar according to a distance between the display position of the first or second scroll display area and the cursor position on the screen of the user operation means used when the user performs scroll display. Tree structure display program that automatically switches display with range indicator. In the tree structure display program according to claim 1,
The scroll environment setting processing means is a tree structure display program for changing the set first or second scroll display area in accordance with a scroll display area changing operation by a user. In the tree structure display program according to claim 1 or 7,
The scroll environment setting processing means displays a scroll display area change symbol at both ends in the scroll direction of the displayed first or second scroll display area, and allows the user to operate the scroll display area change symbol. A tree structure display program for setting the first or second scroll display area. The tree structure display program according to claim 8,
The user interface control processing means has a scroll display area according to a distance between a display position of the first or second scroll display area and a cursor position on a screen of a user operation means used when the user performs scroll display. Tree structure display program that automatically switches display / hide of change symbols. The tree structure display program according to claim 7,
The scroll environment setting processing means temporarily holds setting information related to the set first or second scroll display area in the setting information holding means, and when the scroll display area changing operation by the user is interrupted halfway, A tree structure display program for reading setting information from the setting information holding means and returning the first or second scroll display area to the previous setting contents. The tree structure display program according to claim 1, wherein the computer is:
The all expanded display mode for expanding and displaying all nodes located in the lower hierarchy of the node displayed on the screen, the unexpanded display mode for hiding the node located in the lower hierarchy of the node, and the node corresponding to the node A tree structure display program for functioning as a mode switching processing means for switching a partial expansion display mode for partially displaying a node located in a lower hierarchy of the node in the second scroll display area in accordance with a mode switching operation by a user. Display processing means for displaying the nodes in a hierarchical relationship on a screen in a tree structure ;
Depending on the scroll display area setting operation by Yu chromatography The, the first scroll display area can be changed to a size designated by the scroll display nodes and user to scroll displayed from the tree of the displayed nodes A first scroll display area for scroll-displaying the scroll display node group forming a part of the node tree is set , and the size specified by the user in the first scroll display area that has already been set. A second scroll display area that can be changed to a second scroll display area that is scroll-displayed as a scroll display node group of nodes located in a lower hierarchy of the nodes displayed in the first scroll display area . Scroll environment setting processing means to be set;
Depending on the scroll operation by the user at the first or second scroll display area, the scroll display processing means for scrolling the scroll display nodes in the scroll display area,
I have a,
The display processing means changes a tree range of nodes displayed on the screen in the scroll display area and outside the scroll display area in accordance with the change in the size of the first or second scroll display area. Characteristic tree structure display device. The tree structure display device according to claim 12 ,
A tree structure display device comprising user interface control processing means for displaying a scroll bar for allowing a user to scroll-display the scroll display node group in the first or second scroll display area. The tree structure display device according to claim 12 ,
Setting information holding means for temporarily holding setting information related to the first or second scroll display area;
The scroll environment setting processing means reads the setting information from the setting information holding means when the scroll display area changing operation by the user is interrupted, and sets the first or second scroll display area to the previous setting contents. A tree structure display device characterized by returning. The tree structure display device according to claim 12 ,
The all expanded display mode for expanding and displaying all nodes located in the lower hierarchy of the node displayed on the screen, the unexpanded display mode for hiding the node located in the lower hierarchy of the node, and the node corresponding to the node A tree having mode switching processing means for switching a partial expansion display mode for partially displaying a node located in a lower hierarchy of the node in the second scroll display area in accordance with a mode switching operation by a user. Structure display device.

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