1 /*
2 Copyright (C) 1996 Scott W. Sadler
3 All rights reserved.
4 */
5
6 /*
7 XsComponent.C
8
9 History
10 03-Mar-96 1.0; Scott W. Sadler (ssadler@cisco.com)
11 Created
12 */
13
14 // Includes
15
16 #ifndef NDEBUG
17 #include <iostream.h>
18 #endif
19
20 #include <assert.h>
21 #include <stdio.h>
22 #include <string.h>
23 #include <Xm/Xm.h>
24 #include "XsComponent.h"
25
26 // Constructor
27
XsComponent(const char * name)28 XsComponent::XsComponent (const char *name)
29 {
30 assert (name != 0);
31
32 // Initialize
33
34 _base = 0;
35
36 // Copy component name
37
38 int len = strlen (name);
39 _name = new char [len + 1];
40 strcpy (_name, name);
41 }
42
43 // Destructor
44
~XsComponent()45 XsComponent::~XsComponent ( )
46 {
47
48 // Destroy the widget
49
50 if (_base != 0)
51 {
52 _removeDestroyHandler ( );
53 XtDestroyWidget (_base);
54 }
55
56 delete [] _name;
57 }
58
59 // show
60
show()61 void XsComponent::show ( )
62 {
63
64 #ifndef NDEBUG
65 // if (XtIsManaged (_base))
66 // cout << "Re-managing a widget:" << _name << endl;
67 #endif
68
69 // Make sure the _destroyHandler was installed
70
71 assert (XtHasCallbacks (_base, XmNdestroyCallback) == XtCallbackHasSome);
72
73 assert (_base != 0);
74 XtManageChild (_base);
75 }
76
77 // hide
78
hide()79 void XsComponent::hide ( )
80 {
81
82 #ifndef NDEBUG
83 // if (!XtIsManaged (_base))
84 // cout << "Re-unmanaging a widget:" << _name << endl;
85 #endif
86
87 assert (_base != 0);
88 XtUnmanageChild (_base);
89 }
90
91 // Conversion operator
92
Widget()93 XsComponent::operator Widget ( ) const
94 {
95 assert (_base != 0);
96 return (_base);
97 }
98
99 // operator ==
100
101 Boolean XsComponent::operator == (const XsComponent& rval)
102 {
103 return (_base == rval._base);
104 }
105
106 // className
107
className()108 const char* XsComponent::className ( ) const
109 {
110 return ("XsComponent");
111 }
112
113 // _installDestroyHandler
114
_installDestroyHandler()115 void XsComponent::_installDestroyHandler ( )
116 {
117 assert (_base != 0);
118
119 // Install the destroy handler
120
121 XtAddCallback (_base, XmNdestroyCallback, _componentDestroyedCallback, (XtPointer)this);
122 }
123
124 // _removeDestroyHandler
125
_removeDestroyHandler()126 void XsComponent::_removeDestroyHandler ( )
127 {
128 assert (_base != 0);
129
130 // Remove the destroy handler
131
132 XtRemoveCallback (_base, XmNdestroyCallback, _componentDestroyedCallback, (XtPointer)this);
133 }
134
135 // _componentDestroyed
136
_componentDestroyed()137 void XsComponent::_componentDestroyed ( )
138 {
139 _base = 0;
140 }
141
142 // _componentDestroyedCallback
143
_componentDestroyedCallback(Widget,XtPointer clientData,XtPointer)144 void XsComponent::_componentDestroyedCallback (Widget, XtPointer clientData, XtPointer)
145 {
146 XsComponent *obj = (XsComponent*)clientData;
147 obj->_componentDestroyed ( );
148 }
149
150 // _setResources
151
_setResources(Widget w,const String * resources)152 void XsComponent::_setResources (Widget w, const String *resources)
153 {
154 assert (w != 0);
155
156 XrmDatabase rdb = 0;
157 const int bufSize = 200;
158 char buffer[bufSize];
159 int loop;
160
161 // Create an empty resource database
162
163 rdb = XrmGetStringDatabase ("");
164
165 // Add the component resources
166
167 loop = 0;
168 while (resources[loop] != 0)
169 {
170 sprintf (buffer, "*%s%s\n", _name, resources[loop++]);
171 assert (strlen (buffer) < bufSize);
172 XrmPutLineResource (&rdb, buffer);
173 }
174
175 // Merge these resources into the database
176
177 if (rdb != 0)
178 {
179 XrmDatabase db = XtDatabase (XtDisplay (w));
180 XrmCombineDatabase (rdb, &db, FALSE);
181 }
182 }
183
184 // _getResources
185
_getResources(const XtResourceList resources,int num)186 void XsComponent::_getResources (const XtResourceList resources, int num)
187 {
188 assert (_base != 0);
189 assert (resources != 0);
190
191 // Validate input
192
193 if (num <= 0)
194 return;
195
196 // Get the subresources
197
198 XtGetSubresources (XtParent (_base), (XtPointer)this, _name,
199 className ( ), resources, num, 0, 0);
200 }
201
202