diff options
Diffstat (limited to 'karbon/commands/vcommand.cpp')
| -rw-r--r-- | karbon/commands/vcommand.cpp | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/karbon/commands/vcommand.cpp b/karbon/commands/vcommand.cpp new file mode 100644 index 000000000..fe5e9adaf --- /dev/null +++ b/karbon/commands/vcommand.cpp @@ -0,0 +1,384 @@ +/* This file is part of the KDE project + Copyright (C) 2001, The Karbon Developers + Copyright (C) 2002, The Karbon Developers + + 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 "tdeaction.h" +#include "tdelocale.h" + +#include "vcommand.h" +#include "karbon_part.h" + + +VCommandHistory::VCommandHistory( KarbonPart* part ) + : m_part( part ), m_undoLimit( 50 ), m_redoLimit( 30 ), m_savedPos( 0 ) +{ + m_commands.setAutoDelete( true ); + + m_undo = KStdAction::undo( this, TQT_SLOT( undo() ), m_part->actionCollection(), "koffice_undo" ); + m_redo = KStdAction::redo( this, TQT_SLOT( redo() ), m_part->actionCollection(), "koffice_redo" ); + + clear(); +} + +VCommandHistory::~VCommandHistory() +{ +} + +void +VCommandHistory::clear() +{ + if( m_savedPos != int( m_commands.count() - 1 ) ) + m_savedPos = -1; + else + m_savedPos = 0; + + m_commands.clear(); + + emit historyCleared(); + + if( m_undo != 0 ) + { + m_undo->setEnabled( false ); + m_undo->setText( i18n( "&Undo" ) ); + } + + if( m_redo != 0 ) + { + m_redo->setEnabled( false ); + m_redo->setText( i18n( "&Redo" ) ); + } +} + +void +VCommandHistory::addCommand( VCommand* command, bool execute ) +{ + if( command == 0L ) + return; + + if( !m_commands.isEmpty() ) + { + while( m_commands.last() && !m_commands.last()->success() ) + { + m_commands.removeLast(); + emit lastCommandRemoved(); + } + } + + m_commands.append( command ); + kdDebug(38000) << "History: new command: " << m_commands.findRef( command ) << endl; + + if( execute ) + { + command->execute(); + emit commandExecuted( command ); + } + + updateActions(); + + emit commandAdded( command ); +} + +void +VCommandHistory::setUndoLimit( unsigned int limit ) +{ + m_undoLimit = limit; + clipCommands(); +} + +void +VCommandHistory::setRedoLimit( unsigned int limit ) +{ + m_redoLimit = limit; + clipCommands(); +} + +void +VCommandHistory::undo() +{ + int i = m_commands.count() - 1; + + if( i == -1 ) + return; + + while( ( i >= 0 ) && !( m_commands.at( i )->success() ) ) + { + i--; + } + + if( i < 0 ) + return; + + VCommand* cmd = m_commands.at( i ); + + cmd->unexecute(); + + emit commandExecuted( cmd ); + + emit commandExecuted(); + + clipCommands(); + + updateActions(); + + m_part->repaintAllViews(); +} + +void +VCommandHistory::redo() +{ + int i = m_commands.count() - 1; + + if( i == -1 ) + return; + + while( ( i >= 0 ) && !( m_commands.at( i )->success() ) ) + { + i--; + } + + i++; + + if( i >= int( m_commands.count() ) ) + return; + + VCommand* cmd; + + if( ( cmd = m_commands.at( i ) ) == 0L ) + return; + + cmd->execute(); + + emit commandExecuted( cmd ); + emit commandExecuted(); + + updateActions(); + + m_part->repaintAllViews(); +} + +void +VCommandHistory::undo( VCommand* command ) +{ + if( ( m_commands.findRef( command ) == -1 ) || ( !command->success() ) ) + return; + + command->unexecute(); + + emit commandExecuted( command ); + emit commandExecuted(); + + updateActions(); + + m_part->repaintAllViews(); +} + +void +VCommandHistory::redo( VCommand* command ) +{ + if( ( m_commands.findRef( command ) == -1 ) || ( command->success() ) ) + return; + + command->execute(); + + emit commandExecuted( command ); + emit commandExecuted(); + + updateActions(); + + m_part->repaintAllViews(); +} + +void +VCommandHistory::undoAllTo( VCommand* command ) +{ + int to; + + if( ( to = m_commands.findRef( command ) ) == -1 ) + return; + + int i = m_commands.count() - 1; + + VCommand* cmd; + + while( i > to ) + { + cmd = m_commands.at( i-- ); + + if( cmd->success() ) + { + cmd->unexecute(); + emit commandExecuted( cmd ); + } + } + + emit commandExecuted(); + updateActions(); + + m_part->repaintAllViews(); +} + +void +VCommandHistory::redoAllTo( VCommand* command ) +{ + int to; + + if( ( to = m_commands.findRef( command ) ) == -1 ) + return; + + int i = 0; + + VCommand* cmd; + + while( i <= to ) + { + cmd = m_commands.at( i++ ); + + if( !cmd->success() ) + { + cmd->execute(); + emit commandExecuted( cmd ); + } + } + + emit commandExecuted(); + updateActions(); + + m_part->repaintAllViews(); +} + +void +VCommandHistory::documentSaved() +{ + // I don't know how to make this work... This is a temporary hack... + // Maybe remove all undone commands before the current one ? + int i = m_commands.count() - 1; + + while( ( i >= 0 ) && !( m_commands.at( i )->success() ) ) + { + i--; + } + + i++; + + m_savedPos = i; +} + +void +VCommandHistory::clipCommands() +{ + while( m_commands.count() > m_undoLimit ) + { + if( m_commands.removeFirst() ) + m_savedPos--, emit firstCommandRemoved(); + } + + int i = 0; + + int c = m_commands.count(); + + while( ( i < c ) && ( !m_commands.at( c - 1 - i )->success() ) ) + { + i++; + } + + i = i - m_redoLimit; + + for( int j = 0; j < i; j++ ) + { + if( m_commands.removeLast() ) + emit lastCommandRemoved(); + } +} + +void +VCommandHistory::updateActions() +{ + if( m_commands.count() == 0 ) + { + if( m_undo != 0 ) + { + m_undo->setEnabled( false ); + m_undo->setText( i18n( "&Undo" ) ); + } + + if( m_redo != 0 ) + { + m_redo->setEnabled( false ); + m_redo->setText( i18n( "&Redo" ) ); + } + + return; + } + + int i = m_commands.count() - 1; + + while( ( i >= 0 ) && !( m_commands.at( i )->success() ) ) + { + i--; + } + + if( m_undo != 0 ) + { + if( i < 0 ) + { + m_undo->setEnabled( false ); + m_undo->setText( i18n( "&Undo" ) ); + } + else + { + m_undo->setEnabled( true ); + m_undo->setText( i18n( "&Undo: " ) + m_commands.at( i )->name() ); + } + } + + if( m_redo != 0 ) + { + if( ++i == int( m_commands.count() ) ) + { + m_redo->setEnabled( false ); + m_redo->setText( i18n( "&Redo" ) ); + } + else + { + m_redo->setEnabled( true ); + m_redo->setText( i18n( "&Redo: " ) + m_commands.at( i )->name() ); + } + } + + if( m_savedPos >= 0 ) + { + for( i = 0; i < m_savedPos; i++ ) + { + if( !m_commands.at( i )->success() ) + return; + } + + for( i = m_savedPos; i < int( m_commands.count() ); i++ ) + { + if( m_commands.at( i )->success() ) + return; + } + + emit documentRestored(); + } +} + +#include "vcommand.moc" + |