hierarchy.n

这是一个Linux下的集成开发环境

.nf
Name:	\fBtextFont\fR
Class:	\fBFont\fR
Command-Line Switch:	\fB-textfont\fR
.fi
.IP
Specifies the font to be used in the text portion of the hierarchy.
.LP
.nf
Name:	\fBtextMenuLoadCommand\fR
Class:	\fBCommand\fR
Command-Line Switch:	\fB-textmenuloadcommand\fR
.fi
.IP
Specifies a command to be executed upon user selection via mouse button three,
that will dynamically load the itemMenu for the widget.
.LP
.nf
Name:	\fBvisibleitems\fR
Class:	\fBVisibleItems\fR
Command-Line Switch:	\fB-visibleitems\fR
.fi
.IP
Specifies the widthxheight in characters and lines for the hierarchy.
This option is only administered if the width and height options
are both set to zero, otherwise they take precedence.  The default value
is 80x24.  With the visibleitems option engaged, geometry constraints 
are maintained only on the text portion of the hierarchy.  The size of 
the other components such as 
labels, margins, and scroll bars, are additive and independent, 
effecting the overall size of the hierarchy.  In contrast,
should the width and height options have non zero values, they
are applied to the hierarchy as a whole.  The hierarchy 
is compressed or expanded to maintain the geometry constraints.
.LP
.nf
Name:	\fBvscrollMode\fR
Class:	\fBScrollMode\fR
Command-Line Switch:	\fB-vscrollmode\fR
.fi
.IP
Specifies the the display mode to be used for the vertical
scrollbar: \fBstatic, dynamic,\fR or \fBnone\fR.  In static mode, the 
scroll bar is displayed at all times.  Dynamic mode displays the 
scroll bar as required, and none disables the scroll bar display.  The 
default is static.
.LP
.nf
Name:	\fBwidth\fR
Class:	\fBWidth\fR
Command-Line Switch:	\fB-width\fR
.fi
.IP
Specifies the width of the hierarchy as an entire unit.
The value may be specified in any of the forms acceptable to 
\fBTk_GetPixels\fR.  Any additional space needed to display the other
components such as labels, margins, and scrollbars force the text portion
of the hierarchy
to be compressed.  A value of zero along with the same value for 
the height causes the value given for the visibleitems option 
to be applied which administers geometry constraints in a different
manner.  The default width is zero.
.LP


.BE

.SH DESCRIPTION
.PP
The \fBhierarchy\fR command creates a hierarchical data view widget.  
It allows the graphical management of a a list of nodes that can be
expanded or collapsed.  Individual nodes can be highlighted.
Clicking with the right mouse button on any item brings up a
special item menu.  Clicking on the background area brings up
a different popup menu.  Options exist to provide user control over
the loading of the nodes and actions associated with node selection.
Since the hierarchy is based on the scrolledtext widget, it includes
options to control the method in which the scrollbars are displayed, 
i.e. statically or  dynamically.  Options also exist for adding a 
label to the hierarchy and controlling its position.

.SH "METHODS"
.PP
The \fBhierarchy\fR command creates a new Tcl command whose
name is \fIpathName\fR.  This
command may be used to invoke various
operations on the widget.  It has the following general form:
.DS C
\fIpathName option \fR?\fIarg arg ...\fR?
.DE
\fIOption\fR and the \fIarg\fRs
determine the exact behavior of the command.  The following
commands are possible for hierarchy widgets:
.SH "ASSOCIATED METHODS"
.LP
.nf
.ta 4c 8c 12c
\fBbbox\fR	\fBcompare\fR	\fBdebug\fR	\fBdelete\fR	
\fBdlineinfo\fR	\fBdump\fR	\fBget\fR	\fBindex\fR
\fBinsert\fR	\fBscan\fR	\fBsearch\fR	\fBsee\fR
\fBtag\fR	\fBwindow\fR	\fBxview\fR	\fByview\fR
.fi
.LP
See the "text" manual entry for details on the standard methods.

.SH "WIDGET-SPECIFIC METHODS"
.TP
\fIpathName \fBcget\fR \fIoption\fR
Returns the current value of the configuration option given
by \fIoption\fR.
\fIOption\fR may have any of the values accepted by the \fBhierarchy\fR
command.
.TP
\fIpathName \fBclear\fR
Removes all items from the hierarchy display including all tags and icons.  
The display will remain empty until the -filter or -querycommand 
options are set.
.TP
\fIpathName \fBcollapse\fR \fIuid\fR
Collapses the hierarchy beneath the node with the specified unique id by 
one level.  Since this can take a moment for large hierarchies, the 
cursor will be changed to a watch during the collapse.  Also, if any
of the nodes beneath the node being collapsed are selected, their
status is changed to unselected.
.TP
\fIpathName\fR \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
Query or modify the configuration options of the widget.
If no \fIoption\fR is specified, returns a list describing all of
the available options for \fIpathName\fR (see \fBTk_ConfigureInfo\fR for
information on the format of this list).  If \fIoption\fR is specified
with no \fIvalue\fR, then the command returns a list describing the
one named option (this list will be identical to the corresponding
sublist of the value returned if no \fIoption\fR is specified).  If
one or more \fIoption\-value\fR pairs are specified, then the command
modifies the given widget option(s) to have the given value(s);  in
this case the command returns an empty string.
\fIOption\fR may have any of the values accepted by the \fBhierarchy\fR
command.
.TP
\fIpathName \fBcurrent\fR
Returns the tags for the node that was most recently selected by the 
right mouse button when the item menu was posted.  Usually used by the code
in the item menu to figure out what item is being manipulated.
.TP
\fIpathName \fBdraw\fR ?\fIwhen\fR?
Performs a complete redraw of the entire hierarchy.  When may be either -now
or -eventually where the latter means the draw can be performed after idle.
.TP
\fIpathName \fBexpand\fR \fIuid\fR
Expands the hierarchy beneath the node with the specified unique id by
one level.  Since this can take a moment for large hierarchies, the cursor 
will be changed to a watch during the expansion.
.TP
\fIpathName \fBexpanded\fR \fIuid\fR
Returns the current state of expansion for the node with the specified unique
id.
.TP
\fIpathName \fBexpState\fR
Returns a list of all expanded nodes in the tree.
.TP
\fIpathName \fBmark\fR \fIoption ?arg arg ...?\fR
This command is used to manipulate marks which is quite similar to 
selection, adding a secondary means of hilighting an item in the 
hierarchy.  The exact behavior of the command depends on the 
\fIoption\fR argument that follows the \fBmark\fR argument.  The 
following forms of the command are currently supported:
.RS
.TP
\fIpathName \fBmark clear\fR
Clears all the currently marked nodes in the hierarchy.
.TP
\fIpathName \fBmark add \fIuid \fR?\fIuid uid ...\fR?
Marks the nodes with the specified uids in the hierarchy using the 
\fB-markbackground\fR and \fB-markforeground\fR options and without
affecting the mark state of any other nodes that were already 
marked.
.TP
\fIpathName \fBmark remove \fIuid \fR?\fIuid uid ...\fR?
Unmarks the nodes with the specified uids in the hierarchy without
affecting the mark state of any other nodes that were already 
marked.
.TP
\fIpathName \fBmark get\fR
Returns a list of the unique ids that are currently marked.
.RE
.TP
\fIpathName \fBrefresh\fR \fIuid\fR
Performs a redraw of a specific node that has the given uid.  If the node
is not currently visible or in other words already drawn on the text,
then no action is taken.
.TP
\fIpathName \fBprune\fR \fIuid\fR
Removes the node specified by the given uid from the hierarchy.  Should 
the node have children, then all of its children will be removed as well.
.TP
\fIpathName \fBselection\fR \fIoption \fR?\fIarg arg ...\fR?
This command is used to manipulate the selection of nodes in the
hierarchy.  The exact behavior of the command depends on the 
\fIoption\fR argument that follows the \fBselection\fR argument.  The 
following forms of the command are currently supported:
.RS
.TP
\fIpathName \fBselection clear\fR
Clears all the currently selected nodes in the hierarchy.
.TP
\fIpathName \fBselection add \fIuid \fR?\fIuid uid ...\fR?
Selects the nodes with the specified uids in the hierarchy using the 
\fB-selectionbackground\fR and \fB-selectionforeground\fR options and without
affecting the selection state of any other nodes that were already 
selected.
.TP
\fIpathName \fBselection remove \fIuid \fR?\fIuid uid ...\fR?
Deselects the nodes with the specified uids in the hierarchy without
affecting the selection state of any other nodes that were already 
selected.
.TP
\fIpathName \fBselection get\fR
Returns a list of the unique ids that are currently selected.
.RE
A nodes selection status is also dependent on it being visible.  If a 
node is selected and its parent is then collapsed making the selected
node not visible, then its selection status is changed to unselected.
.TP
\fIpathName \fBtoggle\fR \fIuid\fR
Toggles the hierarchy beneath the node with the specified unique id.  If 
the hierarchy is currently expanded, then it is collapsed, and vice-versa.

.SH "COMPONENTS"
.LP
.nf
Name:	\fBlist\fR
Class:	\fBText\fR
.fi
.IP
The list component is the text widget in which the hierarchy is displayed.
See the "text" widget manual entry for details on the text component item.
.LP
.nf
Name:	\fBbgMenu\fR
Class:	\fBMenu\fR
.fi
.IP
The bgMenu component is the popup menu which is displayed upon pressing
the right mouse button in the background, i.e. not over a specific node.  Menu
items can be added along with their commands via the component command.  
See the "menu" widget manual entry for details on the bgMenu component item.
.LP
.nf
Name:	\fBhorizsb\fR
Class:	\fBScrollbar\fR
.fi
.IP
The horizsb component is the horizontal scroll bar.  See the "scrollbar" 
widget manual entry for details on the horizsb component item.
.LP
.nf
Name:	\fBitemMenu\fR
Class:	\fBMenu\fR
.fi
.IP
The itemMenu component is the popup menu which is displayed upon selection
of a hierarchy node with the right mouse button.  Menu items can be 
added along with their commands via the component command.  See the "menu" 
widget manual entry for details on the itemMenu component item.
.LP
.nf
Name:	\fBvertsb\fR
Class:	\fBScrollbar\fR
.fi
.IP
The vertsb component is the vertical scroll bar.  See the "scrollbar" widget 
manual entry for details on the vertsb component item.
.fi

.SH EXAMPLE
.DS
proc get_files {file} {
    global env

    if {$file == ""} {
        set dir $env(HOME)
    } else {
        set dir $file
    }

    if {[catch {cd $dir}] != 0} {
        return ""
    }

    set rlist ""

    foreach file [lsort [glob -nocomplain *]] {
        lappend rlist [list [file join $dir $file] $file]
    }

    return $rlist
}

hierarchy .h -querycommand "get_files %n" -visibleitems 30x15 \
    -labeltext $env(HOME)
pack .h -side left -expand yes -fill both
.DE
.SH AUTHOR
Mark L. Ulferts
.DE
Michael J. McLennan
.SH KEYWORDS
hierarchy, text, widget