Mercurial > ldforge / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/history.cc	Fri Dec 13 20:01:49 2013 +0200
@@ -0,0 +1,183 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 Santeri Piippo
+ *
+ *  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/>.
+ */
+
+#include "history.h"
+#include "ldtypes.h"
+#include "document.h"
+#include "misc.h"
+#include "gui.h"
+#include "gldraw.h"
+
+bool g_fullRefresh = false;
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+History::History() :
+	m_Position (-1) {}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void History::undo()
+{	if (m_changesets.isEmpty() || getPosition() == -1)
+		return;
+
+	const Changeset& set = getChangeset (getPosition());
+	g_fullRefresh = false;
+
+	// Iterate the list in reverse and undo all actions
+	for (auto it = set.end() - 1; it != set.begin(); --it)
+		(*it)->undo();
+
+	decreasePosition();
+
+	if (!g_fullRefresh)
+		g_win->refresh();
+	else
+		g_win->doFullRefresh();
+
+	g_win->updateActions();
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void History::redo()
+{	if (getPosition() == (long) m_changesets.size())
+		return;
+
+	const Changeset& set = getChangeset (getPosition() + 1);
+	g_fullRefresh = false;
+
+	// Redo things - in the order as they were done in the first place
+	for (const AbstractHistoryEntry* change : set)
+		change->redo();
+
+	setPosition (getPosition() + 1);
+
+	if (!g_fullRefresh)
+		g_win->refresh();
+	else
+		g_win->doFullRefresh();
+
+	g_win->updateActions();
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void History::clear()
+{	for (Changeset set : m_changesets)
+		for (AbstractHistoryEntry* change : set)
+			delete change;
+
+	m_changesets.clear();
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void History::addStep()
+{	if (m_currentChangeset.isEmpty())
+		return;
+
+	while (getPosition() < getSize() - 1)
+		m_changesets.removeLast();
+
+	m_changesets << m_currentChangeset;
+	m_currentChangeset.clear();
+	setPosition (getPosition() + 1);
+	g_win->updateActions();
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void History::add (AbstractHistoryEntry* entry)
+{	if (isIgnoring())
+	{	delete entry;
+		return;
+	}
+
+	entry->setParent (this);
+	m_currentChangeset << entry;
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void AddHistory::undo() const
+{	LDDocument* f = getParent()->getFile();
+	LDObject* obj = f->getObject (getIndex());
+	f->forgetObject (obj);
+	delete obj;
+
+	g_fullRefresh = true;
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void AddHistory::redo() const
+{	LDDocument* f = getParent()->getFile();
+	LDObject* obj = parseLine (getCode());
+	f->insertObj (getIndex(), obj);
+	g_win->R()->compileObject (obj);
+}
+
+// =============================================================================
+// heh
+// -----------------------------------------------------------------------------
+void DelHistory::undo() const
+{	LDDocument* f = getParent()->getFile();
+	LDObject* obj = parseLine (getCode());
+	f->insertObj (getIndex(), obj);
+	g_win->R()->compileObject (obj);
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void DelHistory::redo() const
+{	LDDocument* f = getParent()->getFile();
+	LDObject* obj = f->getObject (getIndex());
+	f->forgetObject (obj);
+	delete obj;
+
+	g_fullRefresh = true;
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void EditHistory::undo() const
+{	LDObject* obj = getCurrentDocument()->getObject (getIndex());
+	LDObject* newobj = parseLine (getOldCode());
+	obj->replace (newobj);
+	g_win->R()->compileObject (newobj);
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void EditHistory::redo() const
+{	LDObject* obj = getCurrentDocument()->getObject (getIndex());
+	LDObject* newobj = parseLine (getNewCode());
+	obj->replace (newobj);
+	g_win->R()->compileObject (newobj);
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+void SwapHistory::undo() const
+{	LDObject::fromID (a)->swap (LDObject::fromID (b));
+}
+
+void SwapHistory::redo() const
+{	undo(); // :v
+}
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