blob: efa0346910686029cfe20e5248176f46abc25f3e (
plain)
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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/***************************************************************************
begin : 2004/03/12
copyright : (C) Mark Kretschmann
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "plugin.h"
#include "pluginmanager.h"
#include <vector>
#include <tqfile.h>
#include <tqstring.h>
#include <klibloader.h>
#include <kdebug.h>
#include <klocale.h>
#include <kmessagebox.h>
using std::vector;
using Akregator::Plugin;
namespace Akregator {
vector<PluginManager::StoreItem>
PluginManager::m_store;
/////////////////////////////////////////////////////////////////////////////////////
// PUBLIC INTERFACE
/////////////////////////////////////////////////////////////////////////////////////
KTrader::OfferList
PluginManager::query( const TQString& constraint )
{
// Add versioning constraint
TQString
str = "[X-TDE-akregator-framework-version] == ";
str += TQString::number( FrameworkVersion );
str += " and ";
if (!constraint.stripWhiteSpace().isEmpty())
str += constraint + " and ";
str += "[X-TDE-akregator-rank] > 0";
kdDebug() << "Plugin trader constraint: " << str << endl;
return KTrader::self()->query( "Akregator/Plugin", str );
}
Plugin*
PluginManager::createFromQuery( const TQString &constraint )
{
KTrader::OfferList offers = query( constraint );
if ( offers.isEmpty() ) {
kdWarning() << k_funcinfo << "No matching plugin found.\n";
return 0;
}
// Select plugin with highest rank
int rank = 0;
uint current = 0;
for ( uint i = 0; i < offers.count(); i++ ) {
if ( offers[i]->property( "X-TDE-akregator-rank" ).toInt() > rank )
current = i;
}
return createFromService( offers[current] );
}
Plugin*
PluginManager::createFromService( const KService::Ptr service )
{
kdDebug() << "Trying to load: " << service->library() << endl;
//get the library loader instance
KLibLoader *loader = KLibLoader::self();
//try to load the specified library
KLibrary *lib = loader->globalLibrary( TQFile::encodeName( service->library() ) );
if ( !lib ) {
KMessageBox::error( 0, i18n( "<p>KLibLoader could not load the plugin:<br/><i>%1</i></p>"
"<p>Error message:<br/><i>%2</i></p>" )
.arg( service->library() )
.arg( loader->lastErrorMessage() ) );
return 0;
}
//look up address of init function and cast it to pointer-to-function
Plugin* (*create_plugin)() = ( Plugin* (*)() ) lib->symbol( "create_plugin" );
if ( !create_plugin ) {
kdWarning() << k_funcinfo << "create_plugin == NULL\n";
return 0;
}
//create plugin on the heap
Plugin* plugin = create_plugin();
//put plugin into store
StoreItem item;
item.plugin = plugin;
item.library = lib;
item.service = service;
m_store.push_back( item );
dump( service );
return plugin;
}
void
PluginManager::unload( Plugin* plugin )
{
vector<StoreItem>::iterator iter = lookupPlugin( plugin );
if ( iter != m_store.end() ) {
delete (*iter).plugin;
kdDebug() << "Unloading library: "<< (*iter).service->library() << endl;
(*iter).library->unload();
m_store.erase( iter );
}
else
kdWarning() << k_funcinfo << "Could not unload plugin (not found in store).\n";
}
KService::Ptr
PluginManager::getService( const Plugin* plugin )
{
if ( !plugin ) {
kdWarning() << k_funcinfo << "pointer == NULL\n";
return 0;
}
//search plugin in store
vector<StoreItem>::const_iterator iter = lookupPlugin( plugin );
if ( iter == m_store.end() )
kdWarning() << k_funcinfo << "Plugin not found in store.\n";
return (*iter).service;
}
void
PluginManager::showAbout( const TQString &constraint )
{
KTrader::OfferList offers = query( constraint );
if ( offers.isEmpty() )
return;
KService::Ptr s = offers.front();
const TQString body = "<tr><td>%1</td><td>%2</td></tr>";
TQString str = "<html><body><table width=\"100%\" border=\"1\">";
str += body.arg( i18n( "Name" ), s->name() );
str += body.arg( i18n( "Library" ), s->library() );
str += body.arg( i18n( "Authors" ), s->property( "X-TDE-akregator-authors" ).toStringList().join( "\n" ) );
str += body.arg( i18n( "Email" ), s->property( "X-TDE-akregator-email" ).toStringList().join( "\n" ) );
str += body.arg( i18n( "Version" ), s->property( "X-TDE-akregator-version" ).toString() );
str += body.arg( i18n( "Framework Version" ), s->property( "X-TDE-akregator-framework-version" ).toString() );
str += "</table></body></html>";
KMessageBox::information( 0, str, i18n( "Plugin Information" ) );
}
void
PluginManager::dump( const KService::Ptr service )
{
kdDebug()
<< "PluginManager Service Info:" << endl
<< "---------------------------" << endl
<< "name : " << service->name() << endl
<< "library : " << service->library() << endl
<< "desktopEntryPath : " << service->desktopEntryPath() << endl
<< "X-TDE-akregator-plugintype : " << service->property( "X-TDE-akregator-plugintype" ).toString() << endl
<< "X-TDE-akregator-name : " << service->property( "X-TDE-akregator-name" ).toString() << endl
<< "X-TDE-akregator-authors : " << service->property( "X-TDE-akregator-authors" ).toStringList() << endl
<< "X-TDE-akregator-rank : " << service->property( "X-TDE-akregator-rank" ).toString() << endl
<< "X-TDE-akregator-version : " << service->property( "X-TDE-akregator-version" ).toString() << endl
<< "X-TDE-akregator-framework-version: " << service->property( "X-TDE-akregator-framework-version" ).toString()
<< endl;
}
/////////////////////////////////////////////////////////////////////////////////////
// PRIVATE INTERFACE
/////////////////////////////////////////////////////////////////////////////////////
vector<PluginManager::StoreItem>::iterator
PluginManager::lookupPlugin( const Plugin* plugin )
{
vector<StoreItem>::iterator iter;
//search plugin pointer in store
vector<StoreItem>::const_iterator end;
for ( iter = m_store.begin(); iter != end; ++iter ) {
if ( (*iter).plugin == plugin )
break;
}
return iter;
}
} // namespace Akregator
|
