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-rw-r--r--libkonq/konq_undo.cpp667
1 files changed, 667 insertions, 0 deletions
diff --git a/libkonq/konq_undo.cpp b/libkonq/konq_undo.cpp
new file mode 100644
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+++ b/libkonq/konq_undo.cpp
@@ -0,0 +1,667 @@
+/* This file is part of the KDE project
+ Copyright (C) 2000 Simon Hausmann <hausmann@kde.org>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+
+#include "konq_undo.h"
+
+#undef Always
+
+#include <tdeio/uiserver_stub.h>
+#include "konq_operations.h"
+
+#include <assert.h>
+
+#include <dcopclient.h>
+#include <dcopref.h>
+
+#include <tdeapplication.h>
+#include <kdatastream.h>
+#include <kdebug.h>
+#include <tdelocale.h>
+#include <tdeglobalsettings.h>
+#include <tdeconfig.h>
+#include <kipc.h>
+
+#include <tdeio/job.h>
+#include <kdirnotify_stub.h>
+
+inline const char *dcopTypeName( const KonqCommand & ) { return "KonqCommand"; }
+inline const char *dcopTypeName( const KonqCommand::Stack & ) { return "KonqCommand::Stack"; }
+
+/**
+ * checklist:
+ * copy dir -> overwrite -> works
+ * move dir -> overwrite -> works
+ * copy dir -> rename -> works
+ * move dir -> rename -> works
+ *
+ * copy dir -> works
+ * move dir -> works
+ *
+ * copy files -> works
+ * move files -> works (TODO: optimize (change FileCopyJob to use the renamed arg for copyingDone)
+ *
+ * copy files -> overwrite -> works
+ * move files -> overwrite -> works
+ *
+ * copy files -> rename -> works
+ * move files -> rename -> works
+ */
+
+class KonqUndoJob : public TDEIO::Job
+{
+public:
+ KonqUndoJob() : TDEIO::Job( true ) { KonqUndoManager::incRef(); };
+ virtual ~KonqUndoJob() { KonqUndoManager::decRef(); }
+
+ virtual void kill( bool q) { KonqUndoManager::self()->stopUndo( true ); TDEIO::Job::kill( q ); }
+};
+
+class KonqCommandRecorder::KonqCommandRecorderPrivate
+{
+public:
+ KonqCommandRecorderPrivate()
+ {
+ }
+ ~KonqCommandRecorderPrivate()
+ {
+ }
+
+ KonqCommand m_cmd;
+};
+
+KonqCommandRecorder::KonqCommandRecorder( KonqCommand::Type op, const KURL::List &src, const KURL &dst, TDEIO::Job *job )
+ : TQObject( job, "konqcmdrecorder" )
+{
+ d = new KonqCommandRecorderPrivate;
+ d->m_cmd.m_type = op;
+ d->m_cmd.m_valid = true;
+ d->m_cmd.m_src = src;
+ d->m_cmd.m_dst = dst;
+ connect( job, TQT_SIGNAL( result( TDEIO::Job * ) ),
+ this, TQT_SLOT( slotResult( TDEIO::Job * ) ) );
+
+ if ( op != KonqCommand::MKDIR ) {
+ connect( job, TQT_SIGNAL( copyingDone( TDEIO::Job *, const KURL &, const KURL &, bool, bool ) ),
+ this, TQT_SLOT( slotCopyingDone( TDEIO::Job *, const KURL &, const KURL &, bool, bool ) ) );
+ connect( job, TQT_SIGNAL( copyingLinkDone( TDEIO::Job *, const KURL &, const TQString &, const KURL & ) ),
+ this, TQT_SLOT( slotCopyingLinkDone( TDEIO::Job *, const KURL &, const TQString &, const KURL & ) ) );
+ }
+
+ KonqUndoManager::incRef();
+}
+
+KonqCommandRecorder::~KonqCommandRecorder()
+{
+ KonqUndoManager::decRef();
+ delete d;
+}
+
+void KonqCommandRecorder::slotResult( TDEIO::Job *job )
+{
+ if ( job->error() )
+ return;
+
+ KonqUndoManager::self()->addCommand( d->m_cmd );
+}
+
+void KonqCommandRecorder::slotCopyingDone( TDEIO::Job *job, const KURL &from, const KURL &to, bool directory, bool renamed )
+{
+ KonqBasicOperation op;
+ op.m_valid = true;
+ op.m_directory = directory;
+ op.m_renamed = renamed;
+ op.m_src = from;
+ op.m_dst = to;
+ op.m_link = false;
+
+ if ( d->m_cmd.m_type == KonqCommand::TRASH )
+ {
+ Q_ASSERT( from.isLocalFile() );
+ Q_ASSERT( to.protocol() == "trash" );
+ TQMap<TQString, TQString> metaData = job->metaData();
+ TQMap<TQString, TQString>::ConstIterator it = metaData.find( "trashURL-" + from.path() );
+ if ( it != metaData.end() ) {
+ // Update URL
+ op.m_dst = it.data();
+ }
+ }
+
+ d->m_cmd.m_opStack.prepend( op );
+}
+
+void KonqCommandRecorder::slotCopyingLinkDone( TDEIO::Job *, const KURL &from, const TQString &target, const KURL &to )
+{
+ KonqBasicOperation op;
+ op.m_valid = true;
+ op.m_directory = false;
+ op.m_renamed = false;
+ op.m_src = from;
+ op.m_target = target;
+ op.m_dst = to;
+ op.m_link = true;
+ d->m_cmd.m_opStack.prepend( op );
+}
+
+KonqUndoManager *KonqUndoManager::s_self = 0;
+unsigned long KonqUndoManager::s_refCnt = 0;
+
+class KonqUndoManager::KonqUndoManagerPrivate
+{
+public:
+ KonqUndoManagerPrivate()
+ {
+ m_uiserver = new UIServer_stub( "tdeio_uiserver", "UIServer" );
+ m_undoJob = 0;
+ }
+ ~KonqUndoManagerPrivate()
+ {
+ delete m_uiserver;
+ }
+
+ bool m_syncronized;
+
+ KonqCommand::Stack m_commands;
+
+ KonqCommand m_current;
+ TDEIO::Job *m_currentJob;
+ UndoState m_undoState;
+ TQValueStack<KURL> m_dirStack;
+ TQValueStack<KURL> m_dirCleanupStack;
+ TQValueStack<KURL> m_fileCleanupStack;
+ TQValueList<KURL> m_dirsToUpdate;
+
+ bool m_lock;
+
+ UIServer_stub *m_uiserver;
+ int m_uiserverJobId;
+
+ KonqUndoJob *m_undoJob;
+};
+
+KonqUndoManager::KonqUndoManager()
+: DCOPObject( "KonqUndoManager" )
+{
+ if ( !kapp->dcopClient()->isAttached() )
+ kapp->dcopClient()->attach();
+
+ d = new KonqUndoManagerPrivate;
+ d->m_syncronized = initializeFromKDesky();
+ d->m_lock = false;
+ d->m_currentJob = 0;
+}
+
+KonqUndoManager::~KonqUndoManager()
+{
+ delete d;
+}
+
+void KonqUndoManager::incRef()
+{
+ s_refCnt++;
+}
+
+void KonqUndoManager::decRef()
+{
+ s_refCnt--;
+ if ( s_refCnt == 0 && s_self )
+ {
+ delete s_self;
+ s_self = 0;
+ }
+}
+
+KonqUndoManager *KonqUndoManager::self()
+{
+ if ( !s_self )
+ {
+ if ( s_refCnt == 0 )
+ s_refCnt++; // someone forgot to call incRef
+ s_self = new KonqUndoManager;
+ }
+ return s_self;
+}
+
+void KonqUndoManager::addCommand( const KonqCommand &cmd )
+{
+ broadcastPush( cmd );
+}
+
+bool KonqUndoManager::undoAvailable() const
+{
+ return ( d->m_commands.count() > 0 ) && !d->m_lock;
+}
+
+TQString KonqUndoManager::undoText() const
+{
+ if ( d->m_commands.count() == 0 )
+ return i18n( "Und&o" );
+
+ KonqCommand::Type t = d->m_commands.top().m_type;
+ if ( t == KonqCommand::COPY )
+ return i18n( "Und&o: Copy" );
+ else if ( t == KonqCommand::LINK )
+ return i18n( "Und&o: Link" );
+ else if ( t == KonqCommand::MOVE )
+ return i18n( "Und&o: Move" );
+ else if ( t == KonqCommand::TRASH )
+ return i18n( "Und&o: Trash" );
+ else if ( t == KonqCommand::MKDIR )
+ return i18n( "Und&o: Create Folder" );
+ else
+ assert( false );
+ /* NOTREACHED */
+ return TQString::null;
+}
+
+void KonqUndoManager::undo()
+{
+ KonqCommand cmd = d->m_commands.top();
+ assert( cmd.m_valid );
+
+ d->m_current = cmd;
+
+ TQValueList<KonqBasicOperation>& opStack = d->m_current.m_opStack;
+
+ // Let's first ask for confirmation if we need to delete any file (#99898)
+ KURL::List fileCleanupStack;
+ TQValueList<KonqBasicOperation>::Iterator it = opStack.begin();
+ for ( ; it != opStack.end() ; ++it ) {
+ if ( !(*it).m_directory && !(*it).m_link && d->m_current.m_type == KonqCommand::COPY ) {
+ fileCleanupStack.append( (*it).m_dst );
+ }
+ }
+ if ( !fileCleanupStack.isEmpty() ) {
+ // Because undo can happen with an accidental Ctrl-Z, we want to always confirm.
+ if ( !KonqOperations::askDeleteConfirmation( fileCleanupStack, KonqOperations::DEL,
+ KonqOperations::FORCE_CONFIRMATION,
+ 0 /* TODO parent */ ) )
+ return;
+ }
+
+ d->m_dirCleanupStack.clear();
+ d->m_dirStack.clear();
+ d->m_dirsToUpdate.clear();
+
+ d->m_undoState = MOVINGFILES;
+
+ broadcastPop();
+ broadcastLock();
+
+ it = opStack.begin();
+ TQValueList<KonqBasicOperation>::Iterator end = opStack.end();
+ while ( it != end )
+ {
+ if ( (*it).m_directory && !(*it).m_renamed )
+ {
+ d->m_dirStack.push( (*it).m_src );
+ d->m_dirCleanupStack.prepend( (*it).m_dst );
+ it = d->m_current.m_opStack.remove( it );
+ d->m_undoState = MAKINGDIRS;
+ kdDebug(1203) << "KonqUndoManager::undo MAKINGDIRS" << endl;
+ }
+ else if ( (*it).m_link )
+ {
+ if ( !d->m_fileCleanupStack.contains( (*it).m_dst ) )
+ d->m_fileCleanupStack.prepend( (*it).m_dst );
+
+ if ( d->m_current.m_type != KonqCommand::MOVE )
+ it = d->m_current.m_opStack.remove( it );
+ else
+ ++it;
+ }
+ else
+ ++it;
+ }
+
+ /* this shouldn't be necessary at all:
+ * 1) the source list may contain files, we don't want to
+ * create those as... directories
+ * 2) all directories that need creation should already be in the
+ * directory stack
+ if ( d->m_undoState == MAKINGDIRS )
+ {
+ KURL::List::ConstIterator it = d->m_current.m_src.begin();
+ KURL::List::ConstIterator end = d->m_current.m_src.end();
+ for (; it != end; ++it )
+ if ( !d->m_dirStack.contains( *it) )
+ d->m_dirStack.push( *it );
+ }
+ */
+
+ if ( d->m_current.m_type != KonqCommand::MOVE )
+ d->m_dirStack.clear();
+
+ d->m_undoJob = new KonqUndoJob;
+ d->m_uiserverJobId = d->m_undoJob->progressId();
+ undoStep();
+}
+
+void KonqUndoManager::stopUndo( bool step )
+{
+ d->m_current.m_opStack.clear();
+ d->m_dirCleanupStack.clear();
+ d->m_fileCleanupStack.clear();
+ d->m_undoState = REMOVINGDIRS;
+ d->m_undoJob = 0;
+
+ if ( d->m_currentJob )
+ d->m_currentJob->kill( true );
+
+ d->m_currentJob = 0;
+
+ if ( step )
+ undoStep();
+}
+
+void KonqUndoManager::slotResult( TDEIO::Job *job )
+{
+ d->m_uiserver->jobFinished( d->m_uiserverJobId );
+ if ( job->error() )
+ {
+ job->showErrorDialog( 0L );
+ d->m_currentJob = 0;
+ stopUndo( false );
+ if ( d->m_undoJob )
+ {
+ delete d->m_undoJob;
+ d->m_undoJob = 0;
+ }
+ }
+
+ undoStep();
+}
+
+
+void KonqUndoManager::addDirToUpdate( const KURL& url )
+{
+ if ( d->m_dirsToUpdate.find( url ) == d->m_dirsToUpdate.end() )
+ d->m_dirsToUpdate.prepend( url );
+}
+
+void KonqUndoManager::undoStep()
+{
+ d->m_currentJob = 0;
+
+ if ( d->m_undoState == MAKINGDIRS )
+ undoMakingDirectories();
+
+ if ( d->m_undoState == MOVINGFILES )
+ undoMovingFiles();
+
+ if ( d->m_undoState == REMOVINGFILES )
+ undoRemovingFiles();
+
+ if ( d->m_undoState == REMOVINGDIRS )
+ undoRemovingDirectories();
+
+ if ( d->m_currentJob )
+ connect( d->m_currentJob, TQT_SIGNAL( result( TDEIO::Job * ) ),
+ this, TQT_SLOT( slotResult( TDEIO::Job * ) ) );
+}
+
+void KonqUndoManager::undoMakingDirectories()
+{
+ if ( !d->m_dirStack.isEmpty() ) {
+ KURL dir = d->m_dirStack.pop();
+ kdDebug(1203) << "KonqUndoManager::undoStep creatingDir " << dir.prettyURL() << endl;
+ d->m_currentJob = TDEIO::mkdir( dir );
+ d->m_uiserver->creatingDir( d->m_uiserverJobId, dir );
+ }
+ else
+ d->m_undoState = MOVINGFILES;
+}
+
+void KonqUndoManager::undoMovingFiles()
+{
+ if ( !d->m_current.m_opStack.isEmpty() )
+ {
+ KonqBasicOperation op = d->m_current.m_opStack.pop();
+
+ assert( op.m_valid );
+ if ( op.m_directory )
+ {
+ if ( op.m_renamed )
+ {
+ kdDebug(1203) << "KonqUndoManager::undoStep rename " << op.m_dst.prettyURL() << " " << op.m_src.prettyURL() << endl;
+ d->m_currentJob = TDEIO::rename( op.m_dst, op.m_src, false );
+ d->m_uiserver->moving( d->m_uiserverJobId, op.m_dst, op.m_src );
+ }
+ else
+ assert( 0 ); // this should not happen!
+ }
+ else if ( op.m_link )
+ {
+ kdDebug(1203) << "KonqUndoManager::undoStep symlink " << op.m_target << " " << op.m_src.prettyURL() << endl;
+ d->m_currentJob = TDEIO::symlink( op.m_target, op.m_src, true, false );
+ }
+ else if ( d->m_current.m_type == KonqCommand::COPY )
+ {
+ kdDebug(1203) << "KonqUndoManager::undoStep file_delete " << op.m_dst.prettyURL() << endl;
+ d->m_currentJob = TDEIO::file_delete( op.m_dst );
+ d->m_uiserver->deleting( d->m_uiserverJobId, op.m_dst );
+ }
+ else if ( d->m_current.m_type == KonqCommand::MOVE
+ || d->m_current.m_type == KonqCommand::TRASH )
+ {
+ kdDebug(1203) << "KonqUndoManager::undoStep file_move " << op.m_dst.prettyURL() << " " << op.m_src.prettyURL() << endl;
+ d->m_currentJob = TDEIO::file_move( op.m_dst, op.m_src, -1, true );
+ d->m_uiserver->moving( d->m_uiserverJobId, op.m_dst, op.m_src );
+ }
+
+ // The above TDEIO jobs are lowlevel, they don't trigger KDirNotify notification
+ // So we need to do it ourselves (but schedule it to the end of the undo, to compress them)
+ KURL url( op.m_dst );
+ url.setPath( url.directory() );
+ addDirToUpdate( url );
+
+ url = op.m_src;
+ url.setPath( url.directory() );
+ addDirToUpdate( url );
+ }
+ else
+ d->m_undoState = REMOVINGFILES;
+}
+
+void KonqUndoManager::undoRemovingFiles()
+{
+ kdDebug(1203) << "KonqUndoManager::undoStep REMOVINGFILES" << endl;
+ if ( !d->m_fileCleanupStack.isEmpty() )
+ {
+ KURL file = d->m_fileCleanupStack.pop();
+ kdDebug(1203) << "KonqUndoManager::undoStep file_delete " << file.prettyURL() << endl;
+ d->m_currentJob = TDEIO::file_delete( file );
+ d->m_uiserver->deleting( d->m_uiserverJobId, file );
+
+ KURL url( file );
+ url.setPath( url.directory() );
+ addDirToUpdate( url );
+ }
+ else
+ {
+ d->m_undoState = REMOVINGDIRS;
+
+ if ( d->m_dirCleanupStack.isEmpty() && d->m_current.m_type == KonqCommand::MKDIR )
+ d->m_dirCleanupStack << d->m_current.m_dst;
+ }
+}
+
+void KonqUndoManager::undoRemovingDirectories()
+{
+ if ( !d->m_dirCleanupStack.isEmpty() )
+ {
+ KURL dir = d->m_dirCleanupStack.pop();
+ kdDebug(1203) << "KonqUndoManager::undoStep rmdir " << dir.prettyURL() << endl;
+ d->m_currentJob = TDEIO::rmdir( dir );
+ d->m_uiserver->deleting( d->m_uiserverJobId, dir );
+ addDirToUpdate( dir );
+ }
+ else
+ {
+ d->m_current.m_valid = false;
+ d->m_currentJob = 0;
+ if ( d->m_undoJob )
+ {
+ kdDebug(1203) << "KonqUndoManager::undoStep deleting undojob" << endl;
+ d->m_uiserver->jobFinished( d->m_uiserverJobId );
+ delete d->m_undoJob;
+ d->m_undoJob = 0;
+ }
+ KDirNotify_stub allDirNotify( "*", "KDirNotify*" );
+ TQValueList<KURL>::ConstIterator it = d->m_dirsToUpdate.begin();
+ for( ; it != d->m_dirsToUpdate.end(); ++it ) {
+ kdDebug() << "Notifying FilesAdded for " << *it << endl;
+ allDirNotify.FilesAdded( *it );
+ }
+ broadcastUnlock();
+ }
+}
+
+void KonqUndoManager::push( const KonqCommand &cmd )
+{
+ d->m_commands.push( cmd );
+ emit undoAvailable( true );
+ emit undoTextChanged( undoText() );
+}
+
+void KonqUndoManager::pop()
+{
+ d->m_commands.pop();
+ emit undoAvailable( undoAvailable() );
+ emit undoTextChanged( undoText() );
+}
+
+void KonqUndoManager::lock()
+{
+// assert( !d->m_lock );
+ d->m_lock = true;
+ emit undoAvailable( undoAvailable() );
+}
+
+void KonqUndoManager::unlock()
+{
+// assert( d->m_lock );
+ d->m_lock = false;
+ emit undoAvailable( undoAvailable() );
+}
+
+KonqCommand::Stack KonqUndoManager::get() const
+{
+ return d->m_commands;
+}
+
+void KonqUndoManager::broadcastPush( const KonqCommand &cmd )
+{
+ if ( !d->m_syncronized )
+ {
+ push( cmd );
+ return;
+ }
+
+ DCOPRef( "kdesktop", "KonqUndoManager" ).send( "push", cmd );
+ DCOPRef( "konqueror*", "KonqUndoManager" ).send( "push", cmd );
+}
+
+void KonqUndoManager::broadcastPop()
+{
+ if ( !d->m_syncronized )
+ {
+ pop();
+ return;
+ }
+ DCOPRef( "kdesktop", "KonqUndoManager" ).send( "pop" );
+ DCOPRef( "konqueror*", "KonqUndoManager" ).send( "pop" );
+}
+
+void KonqUndoManager::broadcastLock()
+{
+// assert( !d->m_lock );
+
+ if ( !d->m_syncronized )
+ {
+ lock();
+ return;
+ }
+ DCOPRef( "kdesktop", "KonqUndoManager" ).send( "lock" );
+ DCOPRef( "konqueror*", "KonqUndoManager" ).send( "lock" );
+}
+
+void KonqUndoManager::broadcastUnlock()
+{
+// assert( d->m_lock );
+
+ if ( !d->m_syncronized )
+ {
+ unlock();
+ return;
+ }
+ DCOPRef( "kdesktop", "KonqUndoManager" ).send( "unlock" );
+ DCOPRef( "konqueror*", "KonqUndoManager" ).send( "unlock" );
+}
+
+bool KonqUndoManager::initializeFromKDesky()
+{
+ // ### workaround for dcop problem and upcoming 2.1 release:
+ // in case of huge io operations the amount of data sent over
+ // dcop (containing undo information broadcasted for global undo
+ // to all konqueror instances) can easily exceed the 64kb limit
+ // of dcop. In order not to run into trouble we disable global
+ // undo for now! (Simon)
+ // ### FIXME: post 2.1
+ return false;
+
+ DCOPClient *client = kapp->dcopClient();
+
+ if ( client->appId() == "kdesktop" ) // we are master :)
+ return true;
+
+ if ( !client->isApplicationRegistered( "kdesktop" ) )
+ return false;
+
+ d->m_commands = DCOPRef( "kdesktop", "KonqUndoManager" ).call( "get" );
+ return true;
+}
+
+TQDataStream &operator<<( TQDataStream &stream, const KonqBasicOperation &op )
+{
+ stream << op.m_valid << op.m_directory << op.m_renamed << op.m_link
+ << op.m_src << op.m_dst << op.m_target;
+ return stream;
+}
+TQDataStream &operator>>( TQDataStream &stream, KonqBasicOperation &op )
+{
+ stream >> op.m_valid >> op.m_directory >> op.m_renamed >> op.m_link
+ >> op.m_src >> op.m_dst >> op.m_target;
+ return stream;
+}
+
+TQDataStream &operator<<( TQDataStream &stream, const KonqCommand &cmd )
+{
+ stream << cmd.m_valid << (TQ_INT8)cmd.m_type << cmd.m_opStack << cmd.m_src << cmd.m_dst;
+ return stream;
+}
+
+TQDataStream &operator>>( TQDataStream &stream, KonqCommand &cmd )
+{
+ TQ_INT8 type;
+ stream >> cmd.m_valid >> type >> cmd.m_opStack >> cmd.m_src >> cmd.m_dst;
+ cmd.m_type = static_cast<KonqCommand::Type>( type );
+ return stream;
+}
+
+#include "konq_undo.moc"