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Diffstat (limited to 'tqt/tqextscintilladocument.cpp')
-rw-r--r-- | tqt/tqextscintilladocument.cpp | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/tqt/tqextscintilladocument.cpp b/tqt/tqextscintilladocument.cpp new file mode 100644 index 0000000..a8394b6 --- /dev/null +++ b/tqt/tqextscintilladocument.cpp @@ -0,0 +1,142 @@ +// This module implements the TQextScintillaDocument class. +// +// Copyright (c) 2006 +// Riverbank Computing Limited <info@riverbankcomputing.co.uk> +// +// This file is part of TQScintilla. +// +// This copy of TQScintilla 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 2, or (at your option) any +// later version. +// +// TQScintilla is supplied 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 +// TQScintilla; see the file LICENSE. If not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "tqextscintilladocument.h" +#include "tqextscintillabase.h" + + +// This internal class encapsulates the underlying document and is shared by +// TQextScintillaDocument instances. +class TQextScintillaDocumentP +{ +public: + TQextScintillaDocumentP() : doc(0), nr_displays(0), nr_attaches(1) {} + + long doc; // The Scintilla document. + int nr_displays; // The number of displays. + int nr_attaches; // The number of attaches. +}; + + +// The ctor. +TQextScintillaDocument::TQextScintillaDocument() +{ + pdoc = new TQextScintillaDocumentP(); +} + + +// The dtor. +TQextScintillaDocument::~TQextScintillaDocument() +{ + detach(); +} + + +// The copy ctor. +TQextScintillaDocument::TQextScintillaDocument(const TQextScintillaDocument &that) +{ + attach(that); +} + + +// The assignment operator. +TQextScintillaDocument &TQextScintillaDocument::operator=(const TQextScintillaDocument &that) +{ + if (pdoc != that.pdoc) + { + detach(); + attach(that); + } + + return *this; +} + + +// Attach an existing document to this one. +void TQextScintillaDocument::attach(const TQextScintillaDocument &that) +{ + ++that.pdoc -> nr_attaches; + pdoc = that.pdoc; +} + + +// Detach the underlying document. +void TQextScintillaDocument::detach() +{ + if (!pdoc) + return; + + if (--pdoc -> nr_attaches == 0) + { + if (pdoc -> doc && pdoc -> nr_displays == 0) + { + TQextScintillaBase *tqsb = TQextScintillaBase::pool(); + + // Release the explicit reference to the document. If + // the pool is empty then we just accept the memory + // leak. + if (tqsb) + tqsb -> SendScintilla(TQextScintillaBase::SCI_RELEASEDOCUMENT,0,pdoc -> doc); + } + + delete pdoc; + } + + pdoc = 0; +} + + +// Undisplay and detach the underlying document. +void TQextScintillaDocument::undisplay(TQextScintillaBase *tqsb) +{ + if (--pdoc -> nr_attaches == 0) + delete pdoc; + else if (--pdoc -> nr_displays == 0) + { + // Create an explicit reference to the document to keep it + // alive. + tqsb -> SendScintilla(TQextScintillaBase::SCI_ADDREFDOCUMENT,0,pdoc -> doc); + } + + pdoc = 0; +} + + +// Display the underlying document. +void TQextScintillaDocument::display(TQextScintillaBase *tqsb,const TQextScintillaDocument *from) +{ + long ndoc; + + if (from) + { + ndoc = from -> pdoc -> doc; + tqsb -> SendScintilla(TQextScintillaBase::SCI_SETDOCPOINTER,0,ndoc); + } + else + ndoc = tqsb -> SendScintilla(TQextScintillaBase::SCI_GETDOCPOINTER); + + pdoc -> doc = ndoc; + ++pdoc -> nr_displays; +} |