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-rw-r--r--src/document.h141
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diff --git a/src/document.h b/src/document.h
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-/*
- * Copyright (C) 2012-2017 Robin Haberkorn
- *
- * This program 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.
- *
- * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __DOCUMENT_H
-#define __DOCUMENT_H
-
-#include <glib.h>
-
-#include <Scintilla.h>
-
-#include "sciteco.h"
-#include "memory.h"
-#include "interface.h"
-#include "undo.h"
-
-namespace SciTECO {
-
-/*
- * Classes
- */
-
-class Document : public Object {
- typedef const void *SciDoc;
- SciDoc doc;
-
- /*
- * The so called "parameters".
- * Updated/restored only when required
- */
- gint anchor, dot;
- gint first_line, xoffset;
-
-public:
- Document() : doc(NULL)
- {
- reset();
- }
- virtual ~Document()
- {
- /*
- * Cannot release document here, since we must
- * do it on the same view that created it.
- * We also cannot call get_create_document_view()
- * since it is virtual.
- * So we must demand that deriving classes call
- * release_document() from their destructors.
- */
- g_assert(doc == NULL);
- }
-
- inline bool
- is_initialized(void)
- {
- return doc != NULL;
- }
-
- void edit(ViewCurrent &view);
- void undo_edit(ViewCurrent &view);
-
- void update(ViewCurrent &view);
- inline void
- update(const Document &from)
- {
- anchor = from.anchor;
- dot = from.dot;
- first_line = from.first_line;
- xoffset = from.xoffset;
- }
-
- inline void
- reset(void)
- {
- anchor = dot = 0;
- first_line = xoffset = 0;
- }
- inline void
- undo_reset(void)
- {
- undo.push_var(anchor);
- undo.push_var(dot);
- undo.push_var(first_line);
- undo.push_var(xoffset);
- }
-
- void exchange(Document &other);
- inline void
- undo_exchange(void)
- {
- undo.push_var(doc);
- undo_reset();
- }
-
-protected:
- inline void
- release_document(void)
- {
- if (is_initialized()) {
- ViewCurrent &view = get_create_document_view();
- view.ssm(SCI_RELEASEDOCUMENT, 0, (sptr_t)doc);
- doc = NULL;
- }
- }
-
-private:
- /*
- * Must be implemented by derived class.
- * Documents must be released on the same view
- * as they were created.
- * Since we do not want to save this view
- * per document, it must instead be returned by
- * this method.
- */
- virtual ViewCurrent &get_create_document_view(void) = 0;
-
- inline void
- maybe_create_document(void)
- {
- if (!is_initialized()) {
- ViewCurrent &view = get_create_document_view();
- doc = (SciDoc)view.ssm(SCI_CREATEDOCUMENT);
- }
- }
-};
-
-} /* namespace SciTECO */
-
-#endif