Scroll to navigation

cdk_fselect(3) Library Functions Manual cdk_fselect(3)

NAME

cdk_fselect - curses file selector widget.

SYNOPSIS

cc [ flag ... ] file ... -lcdk [ library ... ]

#include <cdk.h>

CDKFSELECT *fselect,
chtype *actions);
EObjectType objectType,
void *object,
void *clientData);
CDKFSELECT *fselect);
CDKFSELECT *fselect,
boolean box);
CDKFSELECT *fselect);
CDKFSELECT *fselect);
CDKFSELECT *widget,
int *size);
CDKFSELECT *widget);
CDKFSELECT *fselect);
CDKFSELECT *fselect,
int *count);
CDKFSELECT *fselect);
CDKFSELECT *fselect);
CDKFSELECT *fselect);
CDKFSELECT *fselect);
CDKFSELECT *fselect);
CDKFSELECT *fselect);
CDKFSELECT *fselect,
chtype input);
CDKFSELECT *fselect,
int xpos,
int ypos,
boolean relative,
boolean refresh);
CDKSCREEN *cdkscreen,
int xpos,
int ypos,
int height,
int width,
const char *title,
const char *label,
chtype fieldAttribute,
chtype fillerCharacter,
chtype highlight,
const char *dirAttribute,
const char *fileAttribute,
const char *linkAttribute,
const char *sockAttribute,
boolean box,
boolean shadow);
CDKFSELECT *fselect);
CDKFSELECT *fselect,
const char *directory,
chtype fieldAttribute,
chtype fillerCharacter,
chtype highlight,
const char *dirAttribute,
const char *fileAttribute,
const char *linkAttribute,
const char *sockAttribute,
boolean box);
CDKFSELECT *fselect,
chtype attribute);
CDKFSELECT *fselect,
const char * color);
CDKFSELECT *fselect,
boolean box);
CDKFSELECT *fselect,
chtype character);
CDKFSELECT *widget,
CDK_CONST char **list,
int listSize);
CDKFSELECT *widget,
int item);
CDKFSELECT *fselect,
const char *attribute);
CDKFSELECT *fselect);
CDKFSELECT *fselect,
const char *directory);
CDKFSELECT *fselect,
const char *attribute);
CDKFSELECT *fselect,
chtype filler);
CDKFSELECT *fselect,
chtype highlight);
CDKFSELECT *fselect,
chtype character);
CDKFSELECT *fselect,
chtype character);
CDKFSELECT *fselect,
chtype character);
CDKFSELECT *fselect,
const char *attribute);
CDKFSELECT *fselect,
const char *attribute);
CDKFSELECT *fselect,
chtype character);
CDKFSELECT *fselect,
chtype character);
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

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)
Prompts the user to confirm, and deletes the current item in the file-list.
removes the widget from the screen and frees memory the object used.
draws the fselect widget on the screen. If the box option is true, the widget is drawn with a box.
removes the widget from the screen. This does NOT destroy the widget.
returns true if the widget will be drawn with a box around it.
returns the directory-contents (which are formatted), and sets the number of entries via the size parameter.
returns the current position in the scroll-widget.
returns the attribute that directories are drawn with in the scrolling region of the widget.
returns the list of files and the corresponding count as a side-effect. If no files are found, this function returns zero, otherwise one.
returns the current directory of the widget.
returns the attribute that plain files are drawn with in the scrolling region of the widget.
returns the character being used as the filler character in the entry field portion of the widget.
returns the attribute of the highlight bar of the scrolling list portion of the widget.
returns the attribute that symbolic links are drawn with in the scrolling region of the widget.
returns the attribute that sockets are drawn with in the scrolling region of the widget.
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:
the function returns a char * representing the information typed into the widget. The widget data exitType is set to vNORMAL.
the function returns a NULL pointer. The widget data exitType is set to vESCAPE_HIT.
unless modified by preprocessing, postprocessing or key bindings, the function returns a NULL pointer. The widget data exitType is set to vEARLY_EXIT.
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.
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.
allows the user to move the widget around the screen via the cursor/keypad keys. See cdk_position (3) for key bindings.
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.
sets the background attribute of the widget. The parameter attribute is a curses attribute, e.g., A_BOLD.
sets the background color of the widget. The parameter color is in the format of the Cdk format strings. See cdk_display (3).
sets whether the widget will be drawn with a box around it.
sets the attribute of the box.
sets the contents of the widget.
set the current position in the scroll-widget.
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.
sets the current directory of the widget.
sets the attribute that plain files will be drawn with in the scrolling region of the widget.
sets the character to use when drawing the entry field portion of the widget.
sets the attribute of the highlight bar of the scrolling list portion of the widget.
sets the horizontal drawing character for the box to the given character.
sets the lower left hand corner of the widget's box to the given character.
sets the lower right hand corner of the widget's box to the given character.
sets the attribute that symbolic links will be drawn with in the scrolling region of the widget.
sets the attribute that sockets will be drawn with in the scrolling region of the widget.
sets the upper left hand corner of the widget's box to the given character.
sets the upper right hand corner of the widget's box to the given character.
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.