NAME¶
cdk_fselect - curses file selector widget.
SYNOPSIS¶
cc [
flag ... ]
file ...
-lcdk [
library ...
]
#include <cdk.h>
- char *activateCDKFselect (
-
CDKFSELECT *fselect,
chtype *actions);
- void deleteFileCB (
-
EObjectType objectType,
void *object,
void *clientData);
- void destroyCDKFselect (
-
CDKFSELECT *fselect);
- void drawCDKFselect (
-
CDKFSELECT *fselect,
boolean box);
- void eraseCDKFselect (
-
CDKFSELECT *fselect);
- boolean getCDKFselectBox (
-
CDKFSELECT *fselect);
- char **getCDKFselectContents (
-
CDKFSELECT *widget,
int *size);
- int getCDKFselectCurrentItem (
-
CDKFSELECT *widget);
- char *getCDKFselectDirAttribute (
-
CDKFSELECT *fselect);
- char **getCDKFselectDirContents (
-
CDKFSELECT *fselect,
int *count);
- char *getCDKFselectDirectory (
-
CDKFSELECT *fselect);
- char *getCDKFselectFileAttribute (
-
CDKFSELECT *fselect);
- chtype getCDKFselectFillerChar (
-
CDKFSELECT *fselect);
- chtype getCDKFselectHighlight (
-
CDKFSELECT *fselect);
- char *getCDKFselectLinkAttribute (
-
CDKFSELECT *fselect);
- char *getCDKFselectSocketAttribute (
-
CDKFSELECT *fselect);
- char *injectCDKFselect (
-
CDKFSELECT *fselect,
chtype input);
- void moveCDKFselect (
-
CDKFSELECT *fselect,
int xpos,
int ypos,
boolean relative,
boolean refresh);
- CDKFSELECT *newCDKFselect (
-
CDKSCREEN *cdkscreen,
int xpos,
int ypos,
int height,
int width,
char *title,
char *label,
chtype fieldAttribute,
chtype fillerCharacter,
chtype highlight,
char *dirAttribute,
char *fileAttribute,
char *linkAttribute,
char *sockAttribute,
boolean box,
boolean shadow);
- void positionCDKFselect (
-
CDKFSELECT *fselect);
- void setCDKFselect (
-
CDKFSELECT *fselect,
char *directory,
chtype fieldAttribute,
chtype fillerCharacter,
chtype highlight,
char *dirAttribute,
char *fileAttribute,
char *linkAttribute,
char *sockAttribute,
boolean box);
- void setCDKFselectBackgroundAttrib (
-
CDKFSELECT *fselect,
chtype attribute);
- void setCDKFselectBackgroundColor (
-
CDKFSELECT *fselect,
char * color);
- void setCDKFselectBox (
-
CDKFSELECT *fselect,
boolean box);
- void setCDKFselectBoxAttribute (
-
CDKFSELECT *fselect,
chtype character);
- void setCDKFselectContents (
-
CDKFSELECT *widget,
char **list,
int listSize);
- void setCDKFselectCurrentItem (
-
CDKFSELECT *widget,
int item);
- void setCDKFselectDirAttribute (
-
CDKFSELECT *fselect,
char *attribute);
- int setCDKFselectDirContents (
-
CDKFSELECT *fselect);
- int setCDKFselectDirectory (
-
CDKFSELECT *fselect,
char *directory);
- void setCDKFselectFileAttribute (
-
CDKFSELECT *fselect,
char *attribute);
- void setCDKFselectFillerChar (
-
CDKFSELECT *fselect,
chtype filler);
- void setCDKFselectHighlight (
-
CDKFSELECT *fselect,
chtype highlight);
- void setCDKFselectHorizontalChar (
-
CDKFSELECT *fselect,
chtype character);
- void setCDKFselectLLChar (
-
CDKFSELECT *fselect,
chtype character);
- void setCDKFselectLRChar (
-
CDKFSELECT *fselect,
chtype character);
- void setCDKFselectLinkAttribute (
-
CDKFSELECT *fselect,
char *attribute);
- void setCDKFselectSocketAttribute (
-
CDKFSELECT *fselect,
char *attribute);
- void setCDKFselectULChar (
-
CDKFSELECT *fselect,
chtype character);
- void setCDKFselectURChar (
-
CDKFSELECT *fselect,
chtype character);
- void setCDKFselectVerticalChar (
-
CDKFSELECT *fselect,
chtype character);
DESCRIPTION¶
The Cdk file selector widget creates a widget which allows a user to interact
with the Unix file system. This widget allows the user to traverse the file
system and even delete files. (See
NOTES below for more information)
AVAILABLE FUNCTIONS¶
- activateCDKFselect
- activates the file selector widget and lets the user interact with the
widget. The parameter fselect is a pointer to a non-NULL file
selector widget. If the actions parameter is passed with a non-NULL
value, the characters in the array will be injected into the widget. To
activate the widget interactively pass in a NULL pointer for
actions. If the character entered into this widget is RETURN
or TAB then this function will return a char * representing
the information typed into the widget and the widget data exitType
will be set to vNORMAL. If the character entered was ESCAPE
then the function will return NULL pointer and the widget data
exitType is set to vESCAPE_HIT. void deleteFileCB
(EObjectType objectType GCC_UNUSED, void *object, void *clientData)
- deleteFileCB
- Prompts the user to confirm, and deletes the current item in the
file-list.
- destroyCDKFselect
- removes the widget from the screen and frees memory the object used.
- drawCDKFselect
- draws the fselect widget on the screen. If the box option is true,
the widget is drawn with a box.
- eraseCDKFselect
- removes the widget from the screen. This does NOT destroy the
widget.
- getCDKFselectBox
- returns true if the widget will be drawn with a box around it.
- getCDKFselectContents
- returns the directory-contents (which are formatted), and sets the number
of entries via the size parameter.
- getCDKFselectCurrentItem
- returns the current position in the scroll-widget.
- getCDKFselectDirAttribute
- returns the attribute that directories are drawn with in the scrolling
region of the widget.
- getCDKFselectDirContents
- returns the list of files and the corresponding count as a side-effect. If
no files are found, this function returns zero, otherwise one.
- getCDKFselectDirectory
- returns the current directory of the widget.
- getCDKFselectFileAttribute
- returns the attribute that plain files are drawn with in the scrolling
region of the widget.
- getCDKFselectFillerChar
- returns the character being used as the filler character in the entry
field portion of the widget.
- getCDKFselectHighlight
- returns the attribute of the highlight bar of the scrolling list portion
of the widget.
- getCDKFselectLinkAttribute
- returns the attribute that symbolic links are drawn with in the scrolling
region of the widget.
- getCDKFselectSocketAttribute
- returns the attribute that sockets are drawn with in the scrolling region
of the widget.
- injectCDKFselect
- injects a single character into the widget. The parameter fselect
is a pointer to a non-NULL file selector widget. The parameter
character is the character to inject into the widget. The return
value and side-effect (setting the widget data exitType) depend
upon the injected character:
- RETURN or TAB
- the function returns a char * representing the information typed
into the widget. The widget data exitType is set to
vNORMAL.
- ESCAPE
- the function returns a NULL pointer. The widget data
exitType is set to vESCAPE_HIT.
- Otherwise
- unless modified by preprocessing, postprocessing or key bindings, the
function returns a NULL pointer. The widget data exitType is
set to vEARLY_EXIT.
- moveCDKFselect
- moves the given widget to the given position. The parameters xpos
and ypos are the new position of the widget. The parameter
xpos may be an integer or one of the pre-defined values TOP,
BOTTOM, and CENTER. The parameter ypos may be an
integer or one of the pre-defined values LEFT, RIGHT, and
CENTER. The parameter relative states whether the
xpos/ ypos pair is a relative move or an absolute move. For
example, if xpos = 1 and ypos = 2 and relative =
TRUE, then the widget would move one row down and two columns
right. If the value of relative was FALSE then the widget
would move to the position (1,2). Do not use the values TOP,
BOTTOM, LEFT, RIGHT, or CENTER when
relative = TRUE. (weird things may happen). The final
parameter refresh is a boolean value which states whether the
widget will get refreshed after the move.
- newCDKFselect
- creates an fselect widget and returns a pointer to it. Parameters:
- The screen parameter
- is the screen you wish this widget to be placed in.
- The parameter xpos
- controls the placement of the object along the horizontal axis. This
parameter may be an integer or one of the pre-defined values LEFT,
RIGHT, and CENTER.
- ypos
- controls the placement of the object along the vertical axis. It may be an
integer value or one of the pre-defined values TOP, BOTTOM,
and CENTER.
- height and
- width
- control the height and width of the widget. If you provide a value of zero
for either of the height or the width, the widget will be created with the
full width and height of the screen. If you provide a negative value, the
widget will be created the full height or width minus the value
provided.
- title
- is the string which will be displayed at the top of the widget. The title
can be more than one line; just provide a carriage return character at the
line break.
- label
- is the text to use as the label of the file selector.
- fieldAttribute
- is the attribute of the entry field at the top of the widget;
- fillerCharacter
- is the filler character for the entry field.
- highlight
- is the highlight attribute on the scrolling list.
- dirAttribute,
- fileAttribute,
- linkAttribute and
- sockAttribute
- are the attributes of directories, files, links, and sockets found in the
directory list.
- box
- is true if the widget should be drawn with a box around it.
- shadow
- turns the shadow on or off around this widget.
- If the widget could not be created then a NULL pointer is
returned.
- positionCDKFselect
- allows the user to move the widget around the screen via the cursor/keypad
keys. See cdk_position (3) for key bindings.
- setCDKFselect
- lets the programmer modify certain elements of an existing fselect widget.
The parameter names correspond to the same parameter names listed in the
newCDKFselect function.
- setCDKFselectBackgroundAttrib
- sets the background attribute of the widget. The parameter
attribute is a curses attribute, e.g., A_BOLD.
- setCDKFselectBackgroundColor
- sets the background color of the widget. The parameter color is in
the format of the Cdk format strings. See cdk_display (3).
- setCDKFselectBox
- sets whether the widget will be drawn with a box around it.
- setCDKFselectBoxAttribute
- sets the attribute of the box.
- setCDKFselectContents
- sets the contents of the widget.
- setCDKFselectCurrentItem
- set the current position in the scroll-widget.
- setCDKFselectDirAttribute
- sets the attribute that directories will be drawn with in the scrolling
region of the widget. setCDKFselectDirContents This creates a list
of the files in the current directory. See
getCDKFselectDirContents.
- setCDKFselectDirectory
- sets the current directory of the widget.
- setCDKFselectFileAttribute
- sets the attribute that plain files will be drawn with in the scrolling
region of the widget.
- setCDKFselectFillerChar
- sets the character to use when drawing the entry field portion of the
widget.
- setCDKFselectHighlight
- sets the attribute of the highlight bar of the scrolling list portion of
the widget.
- setCDKFselectHorizontalChar
- sets the horizontal drawing character for the box to the given
character.
- setCDKFselectLLChar
- sets the lower left hand corner of the widget's box to the given
character.
- setCDKFselectLRChar
- sets the lower right hand corner of the widget's box to the given
character.
- setCDKFselectLinkAttribute
- sets the attribute that symbolic links will be drawn with in the scrolling
region of the widget.
- setCDKFselectSocketAttribute
- sets the attribute that sockets will be drawn with in the scrolling region
of the widget.
- setCDKFselectULChar
- sets the upper left hand corner of the widget's box to the given
character.
- setCDKFselectURChar
- sets the upper right hand corner of the widget's box to the given
character.
- setCDKFselectVerticalChar
- sets the vertical drawing character for the box to the given
character.
KEY BINDINGS¶
When the widget is activated there are several default key bindings which will
help the user enter or manipulate the information quickly. Since this widget
is built from both the scrolling list widget and the entry field widget, the
key bindings are the same for the respective fields. The extra key bindings
are listed below.
Key |
Action |
|
CTRL-^ |
Displays statistics about the current filename. |
Tab |
Tries to complete the current filename. |
Up Arrow |
Scrolls the scrolling list up one line. |
Down Arrow |
Scrolls the scrolling list down one line. |
Page Up |
Scrolls the scrolling list up one page. |
CTRL-B |
Scrolls the scrolling list up one page. |
Page Down |
Scrolls the scrolling list down one page. |
CTRL-F |
Scrolls the scrolling list down one page. |
Return |
Returns the filename in the entry field of the file selector. It also
sets the widget data exitType to vNORMAL. |
Escape |
Exits the widget and returns a NULL pointer. It also sets the
widget data exitType to vESCAPE_HIT. |
SEE ALSO¶
cdk(3),
cdk_binding(3),
cdk_display(3),
cdk_position(3),
cdk_screen(3)
NOTES¶
This widget is created from the scrolling list widget and the entry field
widget. This is a good example on how to build your own widgets using the base
widgets provided in this distribution. In order for you to delete files using
the file selector, you must add the following call into your program. (the
character X is the character you wish to use to tell the file selector you
want to delete a file.)
bindCDKObject (vSCROLL, fselect->filelist, X,
deleteFile, fselect);
where
fselect is a pointer to the object. This was originally turned on,
but I thought it better to put the control of file deletion on an 'as-need'
basis.