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/*
* Copyright (C) 2010 Nicolas Bonnefon and other contributors
*
* This file is part of glogg.
*
* glogg 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 3 of the License, or
* (at your option) any later version.
*
* glogg 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with glogg. If not, see <http://www.gnu.org/licenses/>.
*/
// This file implements Selection.
// This class implements the selection handling. No check is made on
// the validity of the selection, it must be handled by the caller.
// There are three types of selection, only one type might be active
// at any time.
#include <QtGlobal>
#include "selection.h"
Selection::Selection()
{
selectedLine_ = -1;
selectedPartial_.line = -1;
selectedPartial_.startColumn = 0;
selectedPartial_.endColumn = 0;
selectedRange_.startLine = -1;
selectedRange_.endLine = 0;
}
void Selection::selectPortion( int line, int start_column, int end_column )
{
// First unselect any whole line or range
selectedLine_ = -1;
selectedRange_.startLine = -1;
selectedPartial_.line = line;
selectedPartial_.startColumn = qMin ( start_column, end_column );
selectedPartial_.endColumn = qMax ( start_column, end_column );
}
void Selection::selectRange( int start_line, int end_line )
{
// First unselect any whole line and portion
selectedLine_ = -1;
selectedPartial_.line = -1;
selectedRange_.startLine = qMin ( start_line, end_line );
selectedRange_.endLine = qMax ( start_line, end_line );
}
void Selection::crop( int last_line )
{
if ( selectedLine_ > last_line )
selectedLine_ = -1;
if ( selectedPartial_.line > last_line )
selectedPartial_.line = -1;
if ( selectedRange_.endLine > last_line )
selectedRange_.endLine = last_line;
if ( selectedRange_.startLine > last_line )
selectedRange_.startLine = last_line;
};
bool Selection::getPortionForLine( int line, int* start_column, int* end_column ) const
{
if ( selectedPartial_.line == line ) {
*start_column = selectedPartial_.startColumn;
*end_column = selectedPartial_.endColumn;
return true;
}
else {
return false;
}
}
bool Selection::isLineSelected( int line ) const
{
if ( line == selectedLine_ )
return true;
else if ( selectedRange_.startLine >= 0 )
return ( ( line >= selectedRange_.startLine )
&& ( line <= selectedRange_.endLine ) );
else
return false;
}
QList<int> Selection::getLines() const
{
QList<int> selection;
if ( selectedLine_ >= 0 )
selection.append( selectedLine_ );
else if ( selectedPartial_.line >= 0 )
selection.append( selectedPartial_.line );
else if ( selectedRange_.startLine >= 0 )
for ( int i = selectedRange_.startLine;
i <= selectedRange_.endLine; i++ )
selection.append( i );
return selection;
}
// The tab behaviour is a bit odd at the moment, full lines are not expanded
// but partials (part of line) are, they probably should not ideally.
QString Selection::getSelectedText( const AbstractLogData* logData ) const
{
QString text;
if ( selectedLine_ >= 0 ) {
text = logData->getLineString( selectedLine_ );
}
else if ( selectedPartial_.line >= 0 ) {
text = logData->getExpandedLineString( selectedPartial_.line ).
mid( selectedPartial_.startColumn, ( selectedPartial_.endColumn -
selectedPartial_.startColumn ) + 1 );
}
else if ( selectedRange_.startLine >= 0 ) {
QStringList list = logData->getLines( selectedRange_.startLine,
selectedRange_.endLine - selectedRange_.startLine + 1 );
text = list.join( "\n" );
}
return text;
}
void Selection::getNextPosition( int* line, int* column ) const
{
*line = 0;
*column = 0;
if ( selectedLine_ >= 0 ) {
*line = selectedLine_ + 1;
}
else if ( selectedRange_.startLine >= 0 ) {
*line = selectedRange_.endLine + 1;
}
else if ( selectedPartial_.line >= 0 ) {
*line = selectedPartial_.line;
*column = selectedPartial_.endColumn + 1;
}
}
void Selection::getPreviousPosition( int* line, int* column ) const
{
*line = 0;
*column = 0;
if ( selectedLine_ >= 0 ) {
*line = selectedLine_;
}
else if ( selectedRange_.startLine >= 0 ) {
*line = selectedRange_.startLine;
}
else if ( selectedPartial_.line >= 0 ) {
*line = selectedPartial_.line;
*column = qMax( selectedPartial_.startColumn - 1, 0 );
}
}
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