4 * Copyright (C) 1997-2011 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include "indexfile.h"
29 #include "mainindexes.h"
31 #include "mainsession.h"
34 #include "mwindowgui.h"
36 #include "undostack.h"
38 MainUndo::MainUndo(MWindow *mwindow)
40 this->mwindow = mwindow;
41 undo_stack = new UndoStack;
42 last_update = new Timer;
52 void MainUndo::update_undo_entry(const char *description,
59 mwindow->edl->save_xml(&file, "");
60 file.terminate_string();
61 if(changes_made) mwindow->session->changes_made = 1;
63 // Remove all entries after current and create new one
64 UndoStackItem *current = undo_stack->push();
66 current->set_flags(load_flags);
67 current->set_data(file.string());
68 current->set_description((char*)description);
69 current->set_creator(creator);
70 current->set_filename(mwindow->session->filename);
71 //printf("MainUndo::update_undo_entry %d %p %s\n", __LINE__, current, current->get_filename());
73 // Can't undo only 1 record.
74 if(undo_stack->total() > 1)
76 // mwindow->gui->lock_window("MainUndo::update_undo");
77 mwindow->gui->mainmenu->undo->update_caption(description);
78 mwindow->gui->mainmenu->redo->update_caption("");
79 // mwindow->gui->unlock_window();
83 last_update->update();
86 void MainUndo::update_undo_before(const char *description, void *creator)
88 //printf("MainUndo::update_undo_before %d\n", __LINE__);
89 if(undo_stack->current && !(undo_stack->number_of(undo_stack->current) % 2))
91 printf("MainUndo::update_undo_before %d \"%s\": must be on an after entry to do this. size=%d\n",
99 // Move up an entry to get back in sync
103 mwindow->commit_commercial();
105 // Discard if creator matches previous before entry and within a time limit
108 UndoStackItem *current = undo_stack->current;
109 // Currently on an after entry
115 // Now on a before entry
118 if(current->get_creator() == creator &&
119 !strcmp(current->get_description(), description) &&
120 last_update->get_difference() < UNDO_SPAN)
122 // Before entry has same creator within minimum time. Reuse it.
123 // Stack must point to the before entry
124 undo_stack->current = current;
130 // Append new entry after current position
131 update_undo_entry("", 0, creator, 0);
134 void MainUndo::update_undo_after(const char *description,
138 //printf("MainUndo::update_undo_after %d\n", __LINE__);
139 if(undo_stack->number_of(undo_stack->current) % 2)
141 printf("MainUndo::update_undo_after %d \"%s\": must be on a before entry to do this. size=%d\n",
144 undo_stack->total());
148 // Not getting any update_undo_before to get back in sync, so just append 1 here
152 update_undo_entry(description, load_flags, 0, changes_made);
154 // Update the before entry flags
155 UndoStackItem *current = undo_stack->last;
156 if(current) current = PREVIOUS;
159 current->set_flags(load_flags);
160 current->set_description((char*)description);
165 UndoStackItem *MainUndo::next_undo()
167 return undo_stack->get_current_undo();
170 UndoStackItem *MainUndo::next_redo()
172 return undo_stack->get_current_redo();
175 int MainUndo::undo_load_flags()
177 UndoStackItem *item = next_undo();
178 return item ? item->get_flags() : 0;
181 int MainUndo::redo_load_flags()
183 UndoStackItem *item = next_redo();
184 return item ? item->get_flags() : 0;
190 mwindow->gui->close_keyvalue_popup();
191 mwindow->undo_commercial();
193 UndoStackItem *current = undo_stack->current;
195 undo_stack->current = next_undo();
196 if( undo_stack->number_of(current) % 2 )
197 current = PREVIOUS; // Now have an even number
200 // Set the redo text to the current description
202 UndoStackItem *next = NEXT;
203 mwindow->gui->mainmenu->redo->
204 update_caption(next ? next->get_description() : "");
206 char *current_data = current->get_data();
209 file.read_from_string(current_data);
210 delete [] current_data;
211 load_from_undo(&file, current->get_flags());
212 //printf("MainUndo::undo %d %s\n", __LINE__, current->get_filename());
213 mwindow->set_filename(current->get_filename());
215 // Now update the menu with the after entry
216 UndoStackItem *prev = PREVIOUS;
217 mwindow->gui->mainmenu->undo->
218 update_caption(prev ? prev->get_description() : "");
223 mwindow->reset_caches();
230 mwindow->gui->close_keyvalue_popup();
231 UndoStackItem *current = next_redo();
233 undo_stack->current = current;
234 char *current_data = current->get_data();
236 mwindow->set_filename(current->get_filename());
238 file.read_from_string(current_data);
239 load_from_undo(&file, current->get_flags());
240 delete [] current_data;
242 mwindow->gui->mainmenu->undo->
243 update_caption(current->get_description());
244 // Get next after entry
245 if( (current=NEXT) ) current = NEXT;
246 mwindow->gui->mainmenu->redo->
247 update_caption(current ? current->get_description() : "");
251 mwindow->reset_caches();
257 // Here the master EDL loads
258 int MainUndo::load_from_undo(FileXML *file, uint32_t load_flags)
260 if( load_flags & LOAD_SESSION ) {
261 mwindow->gui->unlock_window();
262 mwindow->close_mixers();
263 mwindow->gui->lock_window("MainUndo::load_from_undo");
265 EDL *prev_edl = mwindow->edl;
266 if( (load_flags & LOAD_ALL) == LOAD_ALL )
268 mwindow->edl->load_xml(file, load_flags);
269 for( Asset *asset=mwindow->edl->assets->first; asset; asset=asset->next ) {
270 mwindow->mainindexes->add_indexable(asset);
272 if( prev_edl != mwindow->edl ) {
273 for( int i=0; i<mwindow->edl->nested_edls.size(); ++i ) {
274 EDL *nested_edl = mwindow->edl->nested_edls[i];
275 if( !nested_edl->path[0] ) continue;
276 int k = prev_edl->nested_edls.size();
277 while( --k >= 0 && // if nested edl was updated, force index rebuild
278 strcmp(nested_edl->path, prev_edl->nested_edls[k]->path) );
279 if( k >= 0 && prev_edl->nested_edls[k]->equivalent_output(nested_edl) >= 0 )
280 IndexFile::delete_index_files(mwindow->preferences, nested_edl);
281 mwindow->mainindexes->add_indexable(nested_edl);
283 prev_edl->remove_user();
285 mwindow->mainindexes->start_build();
286 mwindow->update_plugin_guis(1);
287 if( load_flags & LOAD_SESSION ) {
288 mwindow->gui->unlock_window();
289 mwindow->open_mixers();
290 mwindow->gui->lock_window("MainUndo::load_from_undo");
296 void MainUndo::reset_creators()
298 for( UndoStackItem *current=undo_stack->first; current; current=NEXT ) {
299 current->set_creator(0);
304 void MainUndo::dump(FILE *fp)
306 undo_stack->dump(fp);
309 void MainUndo::save(FILE *fp)
311 undo_stack->save(fp);
314 void MainUndo::load(FILE *fp)
316 undo_stack->load(fp);
317 UndoStackItem *current = undo_stack->current;
318 char *current_data = current ? current->get_data() : 0;
319 if( !current_data ) return;
320 mwindow->gui->lock_window("MainUndo::load");
321 UndoStackItem *next = current->next;
322 mwindow->gui->mainmenu->redo->
323 update_caption(next ? next->get_description() : "");
324 mwindow->set_filename(current->get_filename());
326 file.read_from_string(current_data);
327 load_from_undo(&file, LOAD_ALL);
328 delete [] current_data;
329 UndoStackItem *prev = current->previous;
330 mwindow->gui->mainmenu->undo->
331 update_caption(prev ? prev->get_description() : "");
332 mwindow->update_project(LOADMODE_REPLACE);
333 mwindow->gui->unlock_window();