Mercurial > ldforge / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/EditHistory.cc	Tue Jan 21 02:03:27 2014 +0200
@@ -0,0 +1,202 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013, 2014 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 "EditHistory.h"
+#include "LDObject.h"
+#include "Document.h"
+#include "Misc.h"
+#include "MainWindow.h"
+#include "GLRenderer.h"
+
+// =============================================================================
+//
+History::History() :
+	m_Position (-1) {}
+
+// =============================================================================
+//
+void History::undo()
+{
+	if (m_changesets.isEmpty() || getPosition() == -1)
+		return;
+
+	// Don't take the changes done here as actual edits to the document
+	setIgnoring (true);
+
+	const Changeset& set = getChangeset (getPosition());
+
+	// Iterate the list in reverse and undo all actions
+	for (int i = set.size() - 1; i >= 0; --i)
+	{
+		AbstractHistoryEntry* change = set[i];
+		change->undo();
+	}
+
+	decreasePosition();
+	g_win->refresh();
+	g_win->updateActions();
+	dlog ("Position is now %1", getPosition());
+	setIgnoring (false);
+}
+
+// =============================================================================
+//
+void History::redo()
+{
+	if (getPosition() == m_changesets.size())
+		return;
+
+	setIgnoring (true);
+	const Changeset& set = getChangeset (getPosition() + 1);
+
+	// Redo things - in the order as they were done in the first place
+	for (const AbstractHistoryEntry* change : set)
+		change->redo();
+
+	setPosition (getPosition() + 1);
+	g_win->refresh();
+	g_win->updateActions();
+	dlog ("Position is now %1", getPosition());
+	setIgnoring (false);
+}
+
+// =============================================================================
+//
+void History::clear()
+{
+	for (Changeset set : m_changesets)
+		for (AbstractHistoryEntry* change : set)
+			delete change;
+
+	m_changesets.clear();
+	dlog ("History: cleared");
+}
+
+// =============================================================================
+//
+void History::addStep()
+{
+	if (m_currentChangeset.isEmpty())
+		return;
+
+	while (getPosition() < getSize() - 1)
+	{
+		Changeset last = m_changesets.last();
+
+		for (AbstractHistoryEntry* entry : last)
+			delete entry;
+
+		m_changesets.removeLast();
+	}
+
+	dlog ("History: step added (%1 changes)", m_currentChangeset.size());
+	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;
+	dlog ("History: added entry of type %1", entry->getTypeName());
+}
+
+// =============================================================================
+//
+void AddHistory::undo() const
+{
+	LDObject* obj = getParent()->getDocument()->getObject (getIndex());
+	obj->deleteSelf();
+}
+
+// =============================================================================
+//
+void AddHistory::redo() const
+{
+	LDObject* obj = parseLine (getCode());
+	getParent()->getDocument()->insertObj (getIndex(), obj);
+	g_win->R()->compileObject (obj);
+}
+
+// =============================================================================
+//
+DelHistory::DelHistory (int idx, LDObject* obj) :
+	m_Index (idx),
+	m_Code (obj->raw()) {}
+
+// =============================================================================
+// heh
+//
+void DelHistory::undo() const
+{
+	LDObject* obj = parseLine (getCode());
+	getParent()->getDocument()->insertObj (getIndex(), obj);
+	g_win->R()->compileObject (obj);
+}
+
+// =============================================================================
+//
+void DelHistory::redo() const
+{
+	LDObject* obj = getParent()->getDocument()->getObject (getIndex());
+	obj->deleteSelf();
+}
+
+// =============================================================================
+//
+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();
+}
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