Changed launcher to only add/remove icons/tabs that have changed when removable

media is mounted/unmounted. A card insert on my machine used to take 7500ms.
It now takes 548ms. Same with card removal.
Old code has been left as is an can be re-enabled with a simple comment.

2 files changed, 91 insertions, 2 deletions

diff --git a/core/launcher/documentlist.cpp b/core/launcher/documentlist.cpp
index 92b8c25..59dd721 100644
--- a/core/launcher/documentlist.cpp
+++ b/core/launcher/documentlist.cpp
@@ -284,102 +284,190 @@ void DocumentList::linkChanged( QString arg )
 
         const QList<DocLnk> &list = d->dls.children();
         QListIterator<DocLnk> it( list );
         while ( it.current() ) {
             DocLnk *doc = it.current();
             ++it;
             if ( ( doc->linkFileKnown() && doc->linkFile() == arg )
                 || ( doc->fileKnown() && doc->file() == arg ) ) {
         //odebug << "found old link" << oendl;
                 DocLnk* dl = new DocLnk( arg );
                 // add new one if it exists and matches the mimetype
                 if ( d->store( dl ) ) {
                     // Existing link has been changed, send old link ref and a ref
                     // to the new link
             //odebug << "change case" << oendl;
                     if ( d->serverGui )
                         d->serverGui->documentChanged( *doc, *dl );
 
                 } else {
                     // Link has been removed or doesn't match the mimetypes any more
                     // so we aren't interested in it, so take it away from the list
             //odebug << "removal case" << oendl;
                     if ( d->serverGui )
                         d->serverGui->documentRemoved( *doc );
 
                 }
                 d->dls.remove( doc ); // remove old link from docLnkSet
                 delete doc;
                 return;
             }
         }
         // Didn't find existing link, must be new
         DocLnk* dl = new DocLnk( arg );
         if ( d->store( dl ) ) {
             // Add if it's a link we are interested in
         //odebug << "add case" << oendl;
             add( *dl );
         }
 
     }
 }
 
 void DocumentList::restoreDone()
 {
     reloadAppLnks();
     reloadDocLnks();
 }
 
+void DocumentList::DiffAppLnks()
+{
+    static AppLnkSet *appLnkSet2;
+
+    appLnkSet2 = new AppLnkSet( MimeType::appsFolderName() );
+
+    if ( d->sendAppLnks && d->serverGui ) {
+        static QStringList prevTypeList = appLnkSet->types();
+        QStringList types = appLnkSet2->types();
+        for ( QStringList::Iterator ittypes=types.begin(); ittypes!=types.end(); ++ittypes) {
+            if ( !(*ittypes).isEmpty() ) {
+                if ( !prevTypeList.contains(*ittypes) ) {
+                    QString name = appLnkSet2->typeName(*ittypes);
+                    QPixmap pm = appLnkSet2->typePixmap(*ittypes);
+                    QPixmap bgPm = appLnkSet2->typeBigPixmap(*ittypes);
+
+                    if (pm.isNull()) {
+                        QImage img( Resource::loadImage( "UnknownDocument" ) );
+                        pm = img.smoothScale( AppLnk::smallIconSize(), AppLnk::smallIconSize() );
+                        bgPm = img.smoothScale( AppLnk::bigIconSize(), AppLnk::bigIconSize() );
+                    }
+
+            odebug << "adding type " << (*ittypes) << "" << oendl;
+
+                    // ### our current launcher expects docs tab to be last
+                    d->serverGui->typeAdded( *ittypes, name.isNull() ? (*ittypes) : name, pm, bgPm );
+                }
+                prevTypeList.remove(*ittypes);
+            }
+        }
+        for ( QStringList::Iterator ittypes=prevTypeList.begin(); ittypes!=prevTypeList.end(); ++ittypes) {
+        odebug << "removing type " << (*ittypes) << "" << oendl;
+            d->serverGui->typeRemoved(*ittypes);
+        }
+        prevTypeList = types;
+    }
+
+
+    QListIterator<AppLnk> it1( appLnkSet->children() );
+    QListIterator<AppLnk> it2( appLnkSet2->children() );
+
+    AppLnk *i;
+    AppLnk *j;
+    bool found;
+
+    while ( (j=it2.current()) ) {
+        it1 = appLnkSet->children();
+        found = false;
+        while ( (i=it1.current()) ){
+            if (strcmp(i->name().ascii(),j->name().ascii()) == 0)
+                found = true;
+            ++it1;
+        }
+        if (!found) {
+            qDebug("Item %s needs to be added",j->name().ascii() );
+            d->serverGui->applicationAdded( j->type(), *j );
+                }           
+            ++it2; 
+    }
+
+    it1 = appLnkSet->children();
+     while ( (i=it1.current()) ) {
+        it2 = appLnkSet2->children();
+        found = false;
+        while ( (j=it2.current()) ){
+            if (strcmp(i->name().ascii(),j->name().ascii()) == 0)
+                found = true;
+            ++it2;
+        }
+        if (!found) {
+            qDebug("Item %s needs to be removed",i->name().ascii() );
+            d->serverGui->applicationRemoved( i->type(), *i );
+        }
+                    
+            ++it1; 
+    }
+    
+    delete appLnkSet;
+    appLnkSet = appLnkSet2;
+
+}
 void DocumentList::storageChanged()
 {
+    QTime t;
     // ### can implement better
-    reloadAppLnks();
+
+    t.start();
+    DiffAppLnks();
+//    reloadAppLnks();
+    qDebug("Reload App links took %i ms",t.elapsed() );
     reloadDocLnks();
-    // ### Optimization opportunity
+//    odebug << "Reload links took " << t.elapsed() << " ms " << oendl;
+    qDebug("Reload All links took %i ms",t.elapsed() );
+// ### Optimization opportunity
     // Could be a bit more intelligent and somehow work out which
     // mtab entry has changed and then only scan that and add and remove
     // links appropriately.
 //    rescan();
 }
 
 void DocumentList::sendAllDocLinks()
 {
     if ( d->tid != 0 ) {
         // We are in the middle of scanning, set a flag so
         // we do this when we finish our scanning
         d->needToSendAllDocLinks = true;
         return;
     }
 
     QString contents;
     Categories cats;
     for ( QListIterator<DocLnk> it( d->dls.children() ); it.current(); ++it ) {
         DocLnk *doc = it.current();
         QFileInfo fi( doc->file() );
         if ( !fi.exists() )
             continue;
 
         bool fake = !doc->linkFileKnown();
         if ( !fake ) {
             QFile f( doc->linkFile() );
             if ( f.open( IO_ReadOnly ) ) {
                 QTextStream ts( &f );
                 ts.setEncoding( QTextStream::UnicodeUTF8 );
                 contents += ts.read();
                 f.close();
             } else
                 fake = TRUE;
         }
         if (fake) {
             contents += "[Desktop Entry]\n"; // No tr
             contents += "Categories = " + // No tr
                 cats.labels("Document View",doc->categories()).join(";") + "\n"; // No tr
             contents += "Name = "+doc->name()+"\n"; // No tr
             contents += "Type = "+doc->type()+"\n"; // No tr
         }
         contents += "File = "+doc->file()+"\n"; // No tr // (resolves path)
         contents += QString("Size = %1\n").arg( fi.size() ); // No tr
     }
 
     //odebug << "sending length " << contents.length() << "" << oendl;
 #ifndef QT_NO_COP
     QCopEnvelope e( "QPE/Desktop", "docLinks(QString)" );
diff --git a/core/launcher/documentlist.h b/core/launcher/documentlist.h
index bd5c031..232bb6a 100644
--- a/core/launcher/documentlist.h
+++ b/core/launcher/documentlist.h
@@ -1,77 +1,78 @@
 /**********************************************************************
 ** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
 **
 ** This file is part of the Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 #ifndef DOCUMENT_LIST_H
 #define DOCUMENT_LIST_H
 
 
 #include <qobject.h>
 #include <qtopia/applnk.h>
 
 
 class DocumentListPrivate;
 class ServerInterface;
 
 class DocumentList : public QObject {
     Q_OBJECT
 public:
     DocumentList( ServerInterface *serverGui, bool scanDocs = TRUE,
                   QObject *parent = 0, const char *name = 0 );
     ~DocumentList();
 
     void linkChanged( QString link );
     void restoreDone();
     void storageChanged();
     void sendAllDocLinks();
 
     void reloadAppLnks();
     void reloadDocLnks();
+    void DiffAppLnks();
 
 // Orig DocList stuff
     void start();
     void pause();
     void resume();
     void rescan();
 
     static AppLnkSet *appLnkSet;
 
 /*
     void resend();
 signals:
     void added( const DocLnk& doc );
     void removed( const DocLnk& doc );
     void changed( const DocLnk& oldDoc, const DocLnk& newDoc );
     void allRemoved();
     void doneForNow();
 private slots:
    void resendWorker();
 */
 private slots:
     void startInitialScan();
 protected:
     void timerEvent( QTimerEvent *te );
 private:
     void add( const DocLnk& doc );
     DocumentListPrivate *d;
 
 };
 
 
 #endif