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1.1 root 1: % run this through LaTeX with the appropriate wrapper
2:
3: \chapter {WIDGET}
4:
5: WIDGET (Window Interface Developed at GEc hirsT)
6: is a simple Directory User Agent for X.500 Directory Services.
7: It is included only as an example of an X.500 interface, and how to
8: use the procedural interface, it is not considered to be fully developed.
9:
10: WIDGET supports the following Directory operations:-
11: \begin{itemize}
12: \item bind
13: \item read
14: \item list
15: \item search
16: \item modify
17: \end{itemize}
18:
19: WIDGET uses only a subset of these operations. If you want to
20: use the full power of X.500 you should use the DISH interface described in
21: Chapter~\ref{dish}.
22:
23: WIDGET is curses based, and splits the users screen up into a number of
24: small areas called ``widgets''. Each widget is used to enter information.
25:
26: \section {Types of Widget}
27:
28: There are various types of ``widget'' used by the WIDGET program, these are
29: described in the following sections.
30:
31: Each widget (except label widgets) have an identification
32: ``letter'' associated with them,
33: this is indicated by the left most character in the widget, for example,
34: the widget below is identified by the letter ``\tt b\rm ''.
35:
36: \begin{tabular}{|l|}
37: \hline
38: \tt b: bind\ \ \\
39: \hline
40: \end{tabular}
41:
42: \subsection {Label Widgets}
43: Label widgets are used to simply write information to the screen, they do not accept
44: any form of input.
45:
46: \subsection {Command Widgets}
47: A command widget is used to make the program take some kind of action, such as
48: send a {\em read} operation to the directory,
49: or to change the set of widgets displayed.
50:
51: To issue the command type the letter indicated in
52: the widget.
53:
54: \subsection {Dialog Widgets}
55:
56: Dialog widgets are used to get information from the user.
57: To use a dialog widget, press the letter associated with the widget.
58: Any further input from the keyboard will be entered into the widget,
59: a ``return'' character is used to end the input.
60:
61: \subsection {Toggle Widgets}
62:
63: Toggle widgets are used to select one of a set of pre-determined values.
64: Simply enter the widget letter, and the value will change the next value in
65: the circular list.
66:
67: \section {Using WIDGET}
68:
69: The WIDGET interface is invoked with the \pgm{widget} command.
70:
71: Help is given at any stage by typing `\tt ?\rm ', type `\tt q\rm ' to quit.
72:
73: \subsection {Binding}
74:
75: When run, the first set of widgets display are used to connect to a DSA.
76: You are allowed to change the name of the DSA you want to contact, the user
77: name and password.
78:
79: The are also two widgets to select and read the cache file. Caching is
80: described in section \ref {dua_cache}.
81:
82: You can not proceed until you have successfully connected to a DSA, once
83: connected, the main options set of widgets will be displayed.
84:
85: \subsection {Main Options}
86: The ``main options'' set of widgets, allow you to modify your
87: current position in
88: the DIT, and select the {\em read, list, search} and {\em modify} set of
89: widgets.
90:
91: The current position is entered into the ``goto'' dialog widget. The QUIPU
92: format
93: for a distinguished name, described in many other places, is used.
94: The initial setting of this value is defined by your ``quipurc'' file.
95: See section~\ref{quipurc}.
96:
97: \subsection {Read}
98:
99: The {\em read} set of widgets, allow you specify the node of the DIT you want to
100: read (Enter the name of the node in the ``base'' widget).
101: To read the node, activate the ``start'' command widget.
102: The result will be displayed in the text window at the bottom of the screen.
103: All results are cached, so future reads will be quicker.
104:
105: \subsection {List}
106:
107: The {\em list} set of widgets are used to list the children below the specified
108: node.
109: The default sizelimit parameter can be changed with the ``limit'' dialog
110: widget, a value of -1 specifies no size limit.
111:
112: List results are cached.
113:
114: \subsection {Search}
115:
116: The {\em search} set of widgets are used to create a simple search filter to apply
117: to the directory.
118:
119: Only a single filter item can be specified, and only string types can be
120: searched for.
121:
122: The attribute type is selected with the ``type'' toggle widget, and the type
123: of match with the ``match'' toggle widget.
124: The search value is entered into the ``value'' dialog
125: (If a value is specified with a {\em present} match, the value is ignored).
126:
127: The Distinguished names of entries found to match the filter are
128: displayed. The attribute data form the is cached, so that it can be looked at using the
129: read set of widgets.
130:
131:
132: \subsection {Modify}
133:
134: Modify is similar to search !!! That is you specify the type and value
135: required, and the type of operation. With modify, the type widget is a
136: dialog widget, not a toggle widget.
137:
138: The operations recognised are: {\em modify}, {\em add}, {\em remove}, {\em add value} and
139: {\em remove value}.
140: The {\em add value} and {\em remove value} options
141: are used to manipulate multi valued
142: attributes, attempts to remove the last value, or add a value to a
143: non-existing attribute result in an error (as defined by the standards)
144:
145: \subsection {Quitting}
146:
147: There are a final set of widgets to quit the program.
148: They give you the option of saving the cache, then quitting, or just quitting.
149:
150: When you leave the program, an ``unbind'' operation will be sent to the DSA
151: on your behalf.
152:
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