--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/editHistory.cc Sat Mar 29 05:26:10 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 "ldDocument.h"
+#include "miscallenous.h"
+#include "mainWindow.h"
+#include "glRenderer.h"
+
+// =============================================================================
+//
+History::History() :
+ m_position (-1) {}
+
+// =============================================================================
+//
+void History::undo()
+{
+ if (m_changesets.isEmpty() || position() == -1)
+ return;
+
+ // Don't take the changes done here as actual edits to the document
+ setIgnoring (true);
+
+ const Changeset& set = getChangeset (position());
+
+ // Iterate the list in reverse and undo all actions
+ for (int i = set.size() - 1; i >= 0; --i)
+ {
+ AbstractHistoryEntry* change = set[i];
+ change->undo();
+ }
+
+ m_position--;
+ g_win->refresh();
+ g_win->updateActions();
+ dprint ("Position is now %1", position());
+ setIgnoring (false);
+}
+
+// =============================================================================
+//
+void History::redo()
+{
+ if (position() == m_changesets.size())
+ return;
+
+ setIgnoring (true);
+ const Changeset& set = getChangeset (position() + 1);
+
+ // Redo things - in the order as they were done in the first place
+ for (const AbstractHistoryEntry* change : set)
+ change->redo();
+
+ setPosition (position() + 1);
+ g_win->refresh();
+ g_win->updateActions();
+ dprint ("Position is now %1", position());
+ setIgnoring (false);
+}
+
+// =============================================================================
+//
+void History::clear()
+{
+ for (Changeset set : m_changesets)
+ for (AbstractHistoryEntry* change : set)
+ delete change;
+
+ m_changesets.clear();
+ dprint ("History: cleared");
+}
+
+// =============================================================================
+//
+void History::addStep()
+{
+ if (m_currentChangeset.isEmpty())
+ return;
+
+ while (position() < getSize() - 1)
+ {
+ Changeset last = m_changesets.last();
+
+ for (AbstractHistoryEntry* entry : last)
+ delete entry;
+
+ m_changesets.removeLast();
+ }
+
+ dprint ("History: step added (%1 changes)", m_currentChangeset.size());
+ m_changesets << m_currentChangeset;
+ m_currentChangeset.clear();
+ setPosition (position() + 1);
+ g_win->updateActions();
+}
+
+// =============================================================================
+//
+void History::add (AbstractHistoryEntry* entry)
+{
+ if (isIgnoring())
+ {
+ delete entry;
+ return;
+ }
+
+ entry->setParent (this);
+ m_currentChangeset << entry;
+ dprint ("History: added entry of type %1", entry->getTypeName());
+}
+
+// =============================================================================
+//
+void AddHistory::undo() const
+{
+ LDObject* obj = parent()->document()->getObject (index());
+ obj->destroy();
+}
+
+// =============================================================================
+//
+void AddHistory::redo() const
+{
+ LDObject* obj = parseLine (code());
+ parent()->document()->insertObj (index(), obj);
+ g_win->R()->compileObject (obj);
+}
+
+// =============================================================================
+//
+DelHistory::DelHistory (int idx, LDObject* obj) :
+ m_index (idx),
+ m_code (obj->asText()) {}
+
+// =============================================================================
+// heh
+//
+void DelHistory::undo() const
+{
+ LDObject* obj = parseLine (code());
+ parent()->document()->insertObj (index(), obj);
+ g_win->R()->compileObject (obj);
+}
+
+// =============================================================================
+//
+void DelHistory::redo() const
+{
+ LDObject* obj = parent()->document()->getObject (index());
+ obj->destroy();
+}
+
+// =============================================================================
+//
+void EditHistory::undo() const
+{
+ LDObject* obj = getCurrentDocument()->getObject (index());
+ LDObject* newobj = parseLine (oldCode());
+ obj->replace (newobj);
+ g_win->R()->compileObject (newobj);
+}
+
+// =============================================================================
+//
+void EditHistory::redo() const
+{
+ LDObject* obj = getCurrentDocument()->getObject (index());
+ LDObject* newobj = parseLine (newCode());
+ obj->replace (newobj);
+ g_win->R()->compileObject (newobj);
+}
+
+// =============================================================================
+//
+void SwapHistory::undo() const
+{
+ LDObject::fromID (a)->swap (LDObject::fromID (b));
+}
+
+// =============================================================================
+//
+void SwapHistory::redo() const
+{
+ undo();
+}
\ No newline at end of file