cgfileselect__define.pro
4.58 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
;+
; This method returns the object properties.
;-
PRO cgFileSelect::GetProperty, $
FILENAME=filename, $
LASTDIR=lastdir, $
PARENT=parent, $
TLB=tlb, $
UNAME=uname, $
UVALUE=uvalue
IF Arg_Present(filename) THEN filename = self.filename
IF Arg_Present(lastdir) THEN lastdir = self.lastdir
IF Arg_Present(parent) THEN parent = self.parent
IF Arg_Present(tlb) THEN tlb = self.tlb
IF Arg_Present(uname) THEN uname = self.uname
IF Arg_Present(uvalue) THEN IF Ptr_Valid(self.uvalue) THEN uvalue = *self.uvalue
END
;+
; This method sets the object properties.
;-
PRO cgFileSelect::SetProperty, $
FILENAME=filename, $
LASTDIR=lastdir, $
UVALUE=uvalue
IF N_Elements(filename) NE 0 THEN BEGIN
self.filename = filename
Widget_Control, self.textID, Set_Value=filename
ENDIF
IF N_Elements(lastdir) NE 0 THEN self.lastdir = lastdir
IF N_Elements(uvalue) NE 0 THEN IF Ptr_Valid(self.uvalue) $
THEN *self.uvalue = uvalue $
ELSE self.uvalue = Ptr_New(uvalue)
END
;+
; The class clean-up method.
;-
PRO cgFileSelect::CLEANUP
Ptr_Free, self.uvalue
END
;+
; The class initialization method.
;
; :Params:
; parent: in, optional
; The identifier of the parent widget. If not used, a top-level base widget
; will be created to hold the contents of the program.
;
; :Keywords:
;
;-
FUNCTION cgFileSelect::INIT, parent, $
FILENAME=filename, $
FRAME=frame, $
LABELSIZE=labelsize, $
NAMESIZE=namesize, $
TITLE=title, $
UNAME=uname, $
UVALUE=uvalue
Compile_Opt idl2
; Error handling for the program module.
Catch, theError
IF theError NE 0 THEN BEGIN
Catch, /Cancel
void = cgErrorMsg()
RETURN, 0
ENDIF
; Need a parent?
IF N_Elements(parent) EQ 0 THEN BEGIN
parent = Widget_Base()
createdParent = 1
ENDIF ELSE createdParent = 0
; Default keyword values.
SetDefaultValue, title, 'Filename: '
SetDefaultValue, filename, ""
SetDefaultValue, labelsize, !D.X_CH_SIZE * StrLen(title)
SetDefaultValue, namesize, 0
SetDefaultValue, uname, 'cgFileSelect'
IF filename EQ "" THEN BEGIN
CD, CURRENT=lastDir
ENDIF ELSE BEGIN
root = cgRootName(filename, DIRECTORY=lastDir)
ENDELSE
; Create the widgets for the program.
tlb = Widget_Base(parent, ROW=1, UVALUE=self, EVENT_PRO='cgFileSelect_Events', FRAME=frame)
labelID = Widget_Label(tlb, Value=title, SCR_XSIZE=labelsize)
IF namesize NE 0 THEN BEGIN
textID = Widget_Label(tlb, Value=filename, /SUNKEN_FRAME, SCR_XSIZE=namesize)
ENDIF ELSE BEGIN
textID = Widget_Label(tlb, Value=filename, /SUNKEN_FRAME, DYNAMIC_RESIZE=1)
ENDELSE
button = Widget_Button(tlb, Value='Browse', UVALUE=self)
; Need to realize the widgets?
IF createdParent THEN BEGIN
cgCenterTLB, parent
Widget_Control, parent, /REALIZE
ENDIF
; Populate the object.
self.filename = filename
self.lastDir = lastDir
self.parent = parent
self.tlb = tlb
self.textID = textID
self.labelID = labelID
self.uname = uname
IF N_Elements(uvalue) NE 0 THEN self.uvalue = Ptr_New(uvalue)
; Need to run the program?
IF createdParent THEN XManager, 'cgfileselect', parent, /No_Block
RETURN, 1
END
;+
; The class event handler. All program widget events come here to be processed.
;
; :Params:
; event: in, required
; The event structure from the widget causing the event.
;+
PRO cgFileSelect_Events, event
Widget_Control, event.id, GET_UVALUE=self
self -> GetProperty, LASTDIR=lastDir, FILENAME=filename, PARENT=parent, TLB=tlb
filename = Dialog_Pickfile(PATH=lastDir, /WRITE, Title='Select File...', $
FILE=cgRootName(filename))
IF filename NE "" THEN BEGIN
rootname = cgRootName(filename, DIRECTORY=lastDir)
self -> SetProperty, FILENAME=filename, LASTDIR=lastDir
ENDIF
END
;+
; The class definition module for the cgFileSelect object.
;
; :Params:
; class: out, optional, type=structure
; The structure definition for the cgFileSelect object class.
;-
PRO cgFileSelect__Define, class
class = { cgFileSelect, $
filename: "", $
labelID: 0L, $
lastDir: "", $
parent: 0L, $
tlb: 0L, $
textID: 0L, $
uname: "", $
uvalue: Ptr_New() $
}
END