void TextCaretCache::fill( TextRangeSet& selection)
{
clear();
// qlog_info() << "[CACHE:fill]";
for( int i=0,cnt=selection.rangeCount(); i<cnt; ++i ) {
TextRange& range = selection.range(i);
add( range.caret() );
if( range.hasSelection() ) {
add( range.anchor() );
}
}
// dump();
}
/// execute the given selection command
/// @param controller the controller to execute the selection for
void SelectionCommand::execute( TextEditorController* controller )
{
// save the selection state
TextDocument* document = controller->textDocument();
TextRangeSet* currentSelection = dynamic_cast<TextRangeSet*>( controller->textSelection() );
TextRangeSet* sel = new TextRangeSet(*currentSelection); // start with the current selection
bool resetAnchors = !keepSelection_;
// handle the select operation
switch( unit_ ) {
// character movement
case MoveCaretByCharacter:
sel->moveCarets(amount_);
break;
// This results in clearing the selection if a selection is present or it results in a movement of the caret.
// When clearing a selection the caret is placed next to the selection (which side depends on the direction)
case MoveCaretsOrDeselect:
if( keepSelection_ ) {
sel->moveCarets(amount_);
} else {
sel->moveCaretsOrDeselect(amount_);
}
break;
case MoveCaretByWord:
sel->moveCaretsByCharGroup(amount_, document->config()->whitespaceWithoutNewline(), document->config()->charGroups() );
break;
case MoveCaretByLine:
TextSelection::moveCaretsByLine( controller, sel, amount_ );
break;
case MoveCaretToLineBoundary:
sel->moveCaretsToLineBoundary( amount_, document->config()->whitespaceWithoutNewline() );
break;
case MoveCaretToDocumentBegin:
sel->toSingleRange();
sel->range(0).setCaret(0);
break;
case MoveCaretToDocumentEnd:
sel->toSingleRange();
sel->range(0).setCaret( controller->textDocument()->length() );
break;
case MoveCaretByPage:
{
// make sure the first line of the window is scrolled
TextRenderer* renderer = controller->textRenderer();
TextEditorWidget* widget = controller->widget();
int firstVisibleLine = renderer->firstVisibleLine();
int linesPerPage = renderer->viewHeightInLines();
sel->beginChanges();
TextSelection::moveCaretsByPage( controller, sel, amount_ );
if( !keepSelection_ ) {
sel->resetAnchors(); // we must reset anchors here because de process-changes will merge carets
}
sel->endChanges();
firstVisibleLine += linesPerPage * amount_;
widget->scrollTopToLine( firstVisibleLine );
break;
}
case MoveCaretToExactOffset:
sel->toSingleRange();
sel->range(0).setCaret(amount_);
break;
case SelectAll:
sel->toSingleRange();
sel->setRange(0, document->buffer()->length() );
resetAnchors = false; // do not reset the anchors
break;
case SelectWord:
sel->expandToWords(document->config()->whitespaces(), document->config()->charGroups());
resetAnchors = false; // do not reset the anchors
break;
case SelectWordAt:
sel->selectWordAt( amount_, document->config()->whitespaces(), document->config()->charGroups() );
resetAnchors = false;
break;
case ToggleWordSelectionAt:
sel->toggleWordSelectionAt( amount_, document->config()->whitespaces(), document->config()->charGroups() );
resetAnchors = false;
break;
case SelectFullLine:
sel->expandToFullLines( amount_);
resetAnchors = false;
break;
case AddCaretAtOffset:
sel->addRange( amount_, amount_ );
resetAnchors = false; // do not reset the anchors
break;
case AddCaretByLine:
TextSelection::addRangesByLine( controller, sel, amount_ );
break;
case ResetSelection:
// when there's a selection ESCAPE clears the selection
if( sel->hasSelection() ) {
sel->clearSelection();
} else if( sel->rangeCount() > 1 ) {
sel->toSingleRange();
}
resetAnchors = false; // keep selection
break;
}
if( resetAnchors ) {
sel->resetAnchors();
}
// no change?
if( currentSelection->equals( *sel ) ) {
delete sel;
return; // 0
}
controller->changeAndGiveTextSelection( sel, commandId() );
}
