make the iconloader in GuiUtils a stack

Fixes problems when the same program uses more than one okular part at once
BUGS: 231123

svn path=/trunk/KDE/kdegraphics/okular/; revision=1104494

part.cpp

@@ -256,7 +256,7 @@ m_cliPresentation(false), m_embedMode(detectEmbedMode(parentWidget, parent, args
     // we need an instance
     setComponentData(okularPartFactory::componentData());
 
-    GuiUtils::setIconLoader( iconLoader() );
+    GuiUtils::addIconLoader( iconLoader() );
 
     m_sidebar = new Sidebar( parentWidget );
     setWidget( m_sidebar );
@@ -623,6 +623,7 @@ m_cliPresentation(false), m_embedMode(detectEmbedMode(parentWidget, parent, args
 
 Part::~Part()
 {
+    GuiUtils::removeIconLoader( iconLoader() );
     m_document->removeObserver( this );
 
     if ( m_document->isOpened() )

ui/guiutils.cpp

@@ -29,13 +29,12 @@
 struct GuiUtilsHelper
 {
     GuiUtilsHelper()
-        : il( 0 )
     {
     }
 
     QSvgRenderer* svgStamps();
 
-    KIconLoader * il;
+    QList<KIconLoader *> il;
     std::auto_ptr< QSvgRenderer > svgStampFile;
 };
 
@@ -187,14 +186,19 @@ QPixmap loadStamp( const QString& _name, const QSize& size, int iconSize )
     return pixmap;
 }
 
-void setIconLoader( KIconLoader * loader )
+void addIconLoader( KIconLoader * loader )
 {
-    s_data->il = loader;
+    s_data->il.append( loader );
+}
+
+void removeIconLoader( KIconLoader * loader )
+{
+    s_data->il.removeAll( loader );
 }
 
 KIconLoader* iconLoader()
 {
-    return s_data->il ? s_data->il : KIconLoader::global();
+    return s_data->il.isEmpty() ? KIconLoader::global() : s_data->il.back();
 }
 
 void saveEmbeddedFile( Okular::EmbeddedFile *ef, QWidget *parent )

ui/guiutils.h

@@ -37,7 +37,8 @@ namespace GuiUtils
 
     QPixmap loadStamp( const QString& name, const QSize& size, int iconSize = 0 );
 
-    void setIconLoader( KIconLoader * loader );
+    void addIconLoader( KIconLoader * loader );
+    void removeIconLoader( KIconLoader * loader );
     KIconLoader* iconLoader();
 
     void saveEmbeddedFile( Okular::EmbeddedFile *ef, QWidget *parent );