undo: minimize undo api dependencies between core and ui

DeaDBeeF-Player · Feb 2, 2024 · b29732a · b29732a
1 parent 04885c4
commit b29732a
Show file tree

Hide file tree

Showing 22 changed files with 337 additions and 151 deletions.
diff --git a/include/deadbeef/deadbeef.h b/include/deadbeef/deadbeef.h
@@ -835,9 +835,18 @@ struct ddb_undobuffer_s;
 
 typedef struct {
     size_t _size;
-    void (*initialize)(struct ddb_undomanager_s *undomanager);
-    int (*process_action)(struct ddb_undobuffer_s *undobuffer, const char *action_name);
+    void (*group_begin)(void);
+    void (*group_end)(void);
+    void (*set_action_name)(const char *action_name);
+    void (*free_buffer)(struct ddb_undobuffer_s *undobuffer);
+    void (*execute_buffer)(struct ddb_undobuffer_s *undobuffer);
 } ddb_undo_interface_t;
+
+typedef struct {
+    size_t _size;
+    void (*initialize)(ddb_undo_interface_t *interface);
+    int (*process_action)(struct ddb_undobuffer_s *undobuffer, const char *action_name);
+} ddb_undo_hooks_t;
 #endif
 
 // forward decl for plugin struct
@@ -1735,10 +1744,10 @@ typedef struct {
     void (*undo_process)(void);
 
     /// Allow UI plugin to declare Undo support, and register for receiving undo events.
-    /// Calling this function will enable Undo system, and will use the interface functions
+    /// Calling this function will enable Undo system, and will use the hooks functions
     /// for communicating with UI plugin.
     /// This function can be called only once per session, usually by the UI plugin's start method.
-    void (*register_for_undo) (ddb_undo_interface_t *interface);
+    void (*register_for_undo) (ddb_undo_hooks_t *interface);
 #endif
 } DB_functions_t;
 

diff --git a/osx/deadbeef.xcodeproj/project.pbxproj b/osx/deadbeef.xcodeproj/project.pbxproj
@@ -876,10 +876,6 @@
 		2D2C515A2B6BE15900EAC44E /* undo.h in Headers */ = {isa = PBXBuildFile; fileRef = 2D2C51572B6BE15800EAC44E /* undo.h */; };
 		2D2C515B2B6BE15900EAC44E /* undo.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D2C51582B6BE15900EAC44E /* undo.c */; };
 		2D2C515C2B6BE15900EAC44E /* undo.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D2C51582B6BE15900EAC44E /* undo.c */; };
-		2D2C515E2B6BE21500EAC44E /* undomanager.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D7387D429BE5DA1003E3126 /* undomanager.c */; };
-		2D2C515F2B6BE21500EAC44E /* undobuffer.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D7387D529BE5DA1003E3126 /* undobuffer.c */; };
-		2D2C51612B6BE21500EAC44E /* undomanager.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D7387D429BE5DA1003E3126 /* undomanager.c */; };
-		2D2C51622B6BE21500EAC44E /* undobuffer.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D7387D529BE5DA1003E3126 /* undobuffer.c */; };
 		2D30D0B425E2A5DD0023A299 /* DesignModeState.h in Headers */ = {isa = PBXBuildFile; fileRef = 2D30D0B225E2A5DD0023A299 /* DesignModeState.h */; };
 		2D30D0B525E2A5DD0023A299 /* DesignModeState.m in Sources */ = {isa = PBXBuildFile; fileRef = 2D30D0B325E2A5DD0023A299 /* DesignModeState.m */; };
 		2D30D20C25E2A8930023A299 /* WidgetTopLevelView.h in Headers */ = {isa = PBXBuildFile; fileRef = 2D30D20A25E2A8930023A299 /* WidgetTopLevelView.h */; };
@@ -1650,6 +1646,12 @@
 		2D92D33C29B9323600218F1D /* analyzer.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D92D21C29B92DF900218F1D /* analyzer.c */; };
 		2D92D33D29B9324A00218F1D /* tftintutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D92D1F329B92DF900218F1D /* tftintutil.c */; };
 		2D92D33E29B9324A00218F1D /* pluginsettings.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D92D21729B92DF900218F1D /* pluginsettings.c */; };
+		2D92F37C2B6D226F00BD07E8 /* UndoIntegration.h in Headers */ = {isa = PBXBuildFile; fileRef = 2D92F37A2B6D226F00BD07E8 /* UndoIntegration.h */; };
+		2D92F37D2B6D226F00BD07E8 /* UndoIntegration.m in Sources */ = {isa = PBXBuildFile; fileRef = 2D92F37B2B6D226F00BD07E8 /* UndoIntegration.m */; };
+		2D92F3822B6D250D00BD07E8 /* undointegration.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D92F37F2B6D23FF00BD07E8 /* undointegration.c */; };
+		2D92F3832B6D250E00BD07E8 /* undointegration.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D92F37F2B6D23FF00BD07E8 /* undointegration.c */; };
+		2D92F3842B6D25C400BD07E8 /* undointegration.h in Headers */ = {isa = PBXBuildFile; fileRef = 2D92F37E2B6D23FE00BD07E8 /* undointegration.h */; };
+		2D92F3852B6D25C400BD07E8 /* undointegration.h in Headers */ = {isa = PBXBuildFile; fileRef = 2D92F37E2B6D23FE00BD07E8 /* undointegration.h */; };
 		2D95F6B72939283D002D8499 /* libogglib.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = 2D7C37EC1B2C40520029DE0A /* libogglib.dylib */; };
 		2D95F6BA29392884002D8499 /* artwork_ogg.h in Headers */ = {isa = PBXBuildFile; fileRef = 2D95F6B829392884002D8499 /* artwork_ogg.h */; };
 		2D95F6BB29392884002D8499 /* artwork_ogg.c in Sources */ = {isa = PBXBuildFile; fileRef = 2D95F6B929392884002D8499 /* artwork_ogg.c */; };
@@ -6235,6 +6237,10 @@
 		2D92D21C29B92DF900218F1D /* analyzer.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = analyzer.c; sourceTree = "<group>"; };
 		2D92D21D29B92DF900218F1D /* growableBuffer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = growableBuffer.h; sourceTree = "<group>"; };
 		2D92D21E29B92DF900218F1D /* ctmap.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = ctmap.c; sourceTree = "<group>"; };
+		2D92F37A2B6D226F00BD07E8 /* UndoIntegration.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = UndoIntegration.h; sourceTree = "<group>"; };
+		2D92F37B2B6D226F00BD07E8 /* UndoIntegration.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = UndoIntegration.m; sourceTree = "<group>"; };
+		2D92F37E2B6D23FE00BD07E8 /* undointegration.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = undointegration.h; sourceTree = "<group>"; };
+		2D92F37F2B6D23FF00BD07E8 /* undointegration.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = undointegration.c; sourceTree = "<group>"; };
 		2D95F6B829392884002D8499 /* artwork_ogg.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = artwork_ogg.h; sourceTree = "<group>"; };
 		2D95F6B929392884002D8499 /* artwork_ogg.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = artwork_ogg.c; sourceTree = "<group>"; };
 		2D95F6BF29392F17002D8499 /* base64.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = base64.c; sourceTree = "<group>"; };
@@ -11025,6 +11031,8 @@
 				2D95F720293BA3B8002D8499 /* NSUndoManager+DdbUndoBuffer.m */,
 				2D95F727293BB295002D8499 /* DdbUndoBufferRetainer.h */,
 				2D95F728293BB295002D8499 /* DdbUndoBufferRetainer.m */,
+				2D92F37A2B6D226F00BD07E8 /* UndoIntegration.h */,
+				2D92F37B2B6D226F00BD07E8 /* UndoIntegration.m */,
 			);
 			path = Undo;
 			sourceTree = "<group>";
@@ -12214,6 +12222,8 @@
 				2D0AC9A92864E12600F6D56A /* selpropertieswidget.h */,
 				2D2C51572B6BE15800EAC44E /* undo.h */,
 				2D2C51582B6BE15900EAC44E /* undo.c */,
+				2D92F37E2B6D23FE00BD07E8 /* undointegration.h */,
+				2D92F37F2B6D23FF00BD07E8 /* undointegration.c */,
 			);
 			name = gtkui;
 			path = plugins/gtkui;
@@ -14215,6 +14225,7 @@
 				2D0AC9AC2864E12700F6D56A /* selpropertieswidget.h in Headers */,
 				2DC656862744289C00583E14 /* ddb_splitter_size_mode.h in Headers */,
 				2DC656872744289C00583E14 /* prefwinnetwork.h in Headers */,
+				2D92F3842B6D25C400BD07E8 /* undointegration.h in Headers */,
 				2DC656882744289C00583E14 /* support.h in Headers */,
 				2D60EAFE277235C800C28A44 /* playlistcontroller.h in Headers */,
 				2DC6568A2744289C00583E14 /* ctmapping.h in Headers */,
@@ -14300,6 +14311,7 @@
 				2D0AC9AD2864E12700F6D56A /* selpropertieswidget.h in Headers */,
 				2DE3B7FB2269BF3100AFF9AE /* ddb_splitter_size_mode.h in Headers */,
 				2D715C1A26C839020022A8F0 /* prefwinnetwork.h in Headers */,
+				2D92F3852B6D25C400BD07E8 /* undointegration.h in Headers */,
 				2DE3B80B2269BF3100AFF9AE /* support.h in Headers */,
 				2D60EAFF277235C800C28A44 /* playlistcontroller.h in Headers */,
 				2DE3B7E92269BF3100AFF9AE /* ctmapping.h in Headers */,
@@ -14687,6 +14699,7 @@
 				2DF55C292270F415002C44DC /* ScriptableSelectViewController.h in Headers */,
 				2D6DCB3E291B105D00D6ECE6 /* fastftoi.h in Headers */,
 				2D71C26A1DC88E5C00247CEF /* ScriptableTableDataSource.h in Headers */,
+				2D92F37C2B6D226F00BD07E8 /* UndoIntegration.h in Headers */,
 				2DB951CB26B1E05300602876 /* SpectrumAnalyzerSettings.h in Headers */,
 				2DAB1A3026A5FB9C00EA8B8F /* PreferencesPluginEntry.h in Headers */,
 				2D60108D1A9CDF06000136AF /* SearchWindowController.h in Headers */,
@@ -17983,6 +17996,7 @@
 				2DC656A12744289C00583E14 /* fileman.c in Sources */,
 				2DC656A22744289C00583E14 /* prefwinsound.c in Sources */,
 				2D9793ED276E894E0062585E /* gobjcache.c in Sources */,
+				2D92F3822B6D250D00BD07E8 /* undointegration.c in Sources */,
 				2D92D31D29B92F8D00218F1D /* eqpreset.c in Sources */,
 				2DC656A42744289C00583E14 /* eq.c in Sources */,
 				2DC656A52744289C00583E14 /* deadbeefapp.c in Sources */,
@@ -18009,7 +18023,6 @@
 				2DC656B72744289C00583E14 /* actions.c in Sources */,
 				2DC656B82744289C00583E14 /* hotkeys.c in Sources */,
 				2DC656B92744289C00583E14 /* callbacks.c in Sources */,
-				2D2C515F2B6BE21500EAC44E /* undobuffer.c in Sources */,
 				2D0AC9AA2864E12700F6D56A /* selpropertieswidget.c in Sources */,
 				2DC656BA2744289C00583E14 /* pltmenu.c in Sources */,
 				2DC656BB2744289C00583E14 /* ddbcellrenderertextmultiline.c in Sources */,
@@ -18038,7 +18051,6 @@
 				2DC656CE2744289C00583E14 /* dspconfig.c in Sources */,
 				2DC656CF2744289C00583E14 /* widgets.c in Sources */,
 				2D56580D2AEE64200014443E /* gtkScriptable.c in Sources */,
-				2D2C515E2B6BE21500EAC44E /* undomanager.c in Sources */,
 				2DC656D02744289C00583E14 /* pluginconf.c in Sources */,
 				2DC656D12744289C00583E14 /* trkproperties.c in Sources */,
 				2DC656D22744289C00583E14 /* ctmapping.c in Sources */,
@@ -18092,6 +18104,7 @@
 				2DE3B7FA2269BF3100AFF9AE /* fileman.c in Sources */,
 				2D715C0B26C833570022A8F0 /* prefwinsound.c in Sources */,
 				2D9793EE276E894F0062585E /* gobjcache.c in Sources */,
+				2D92F3832B6D250E00BD07E8 /* undointegration.c in Sources */,
 				2D92D31F29B92F8D00218F1D /* eqpreset.c in Sources */,
 				2DE3B7C02269BF1300AFF9AE /* eq.c in Sources */,
 				2DE3B8022269BF3100AFF9AE /* deadbeefapp.c in Sources */,
@@ -18118,7 +18131,6 @@
 				2DE3B7F62269BF3100AFF9AE /* actions.c in Sources */,
 				2DE3B8002269BF3100AFF9AE /* hotkeys.c in Sources */,
 				2DE3B8012269BF3100AFF9AE /* callbacks.c in Sources */,
-				2D2C51622B6BE21500EAC44E /* undobuffer.c in Sources */,
 				2D0AC9AB2864E12700F6D56A /* selpropertieswidget.c in Sources */,
 				2DE3B7C72269BF1300AFF9AE /* pltmenu.c in Sources */,
 				2DE3B7C32269BF1300AFF9AE /* ddbcellrenderertextmultiline.c in Sources */,
@@ -18147,7 +18159,6 @@
 				2DE3B7DD2269BF3100AFF9AE /* dspconfig.c in Sources */,
 				2DE3B80A2269BF3100AFF9AE /* widgets.c in Sources */,
 				2D56580E2AEE64210014443E /* gtkScriptable.c in Sources */,
-				2D2C51612B6BE21500EAC44E /* undomanager.c in Sources */,
 				2DE3B7D92269BF1700AFF9AE /* pluginconf.c in Sources */,
 				2DE3B7EA2269BF3100AFF9AE /* trkproperties.c in Sources */,
 				2DE3B7CB2269BF1300AFF9AE /* ctmapping.c in Sources */,
@@ -18382,6 +18393,7 @@
 				2DC657E4274A5F6000583E14 /* PlaylistBrowserWidget.m in Sources */,
 				2D95F726293BA3DA002D8499 /* DdbUndoBuffer.m in Sources */,
 				2D9EBAAD25E44A0700255592 /* WidgetSerializer.m in Sources */,
+				2D92F37D2B6D226F00BD07E8 /* UndoIntegration.m in Sources */,
 				2D92D32129B92F9100218F1D /* pluginsettings.c in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;

diff --git a/plugins/cocoaui/AppDelegate.m b/plugins/cocoaui/AppDelegate.m
@@ -41,7 +41,7 @@
 #import "ReplayGainScannerController.h"
 #import "TrackPropertiesManager.h"
 #import "streamer.h"
-#import "undomanager.h"
+#import "UndoIntegration.h"
 
 extern DB_functions_t *deadbeef;
 
@@ -457,7 +457,7 @@ - (void)openFiles:(BOOL)clear play:(BOOL)play {
                 if (!fileadd_cancelled) {
                     dispatch_async(dispatch_get_main_queue(), ^{
                         ddb_playItem_t *tail = deadbeef->plt_get_tail_item(plt_curr, PL_MAIN);
-                        ddb_undomanager_set_action_name (ddb_undomanager_shared(), "Add Files");
+                        ddb_undo->set_action_name ("Add Files");
                         deadbeef->plt_move_all_items(plt_curr, plt, tail);
                         if (tail != NULL) {
                             deadbeef->pl_item_unref (tail);
@@ -520,7 +520,7 @@ - (IBAction)addFoldersAction:(id)sender {
                             deadbeef->pl_item_unref (tail);
                         }
                         deadbeef->pl_save_current();
-                        ddb_undomanager_set_action_name (ddb_undomanager_shared(), "Add Folders");
+                        ddb_undo->set_action_name ("Add Folders");
                         deadbeef->plt_add_files_end (plt, 0);
                         deadbeef->plt_unref (plt);
                         deadbeef->plt_unref (plt_curr);
@@ -560,7 +560,7 @@ - (IBAction)addLocationAction:(id)sender {
                     deadbeef->pl_save_current ();
 
                     dispatch_async(dispatch_get_main_queue(), ^{
-                        ddb_undomanager_set_action_name (ddb_undomanager_shared(), "Add Location");
+                        ddb_undo->set_action_name ("Add Location");
                         deadbeef->plt_add_files_end (plt, 0);
                         deadbeef->plt_unref (plt);
                         deadbeef->plt_unref (plt_curr);

diff --git a/plugins/cocoaui/MediaLibrary/MediaLibraryOutlineViewController.m b/plugins/cocoaui/MediaLibrary/MediaLibraryOutlineViewController.m
@@ -18,8 +18,7 @@
 #import "MedialibItemDragDropHolder.h"
 #import "TrackContextMenu.h"
 #import "TrackPropertiesWindowController.h"
-#import "undo/undobuffer.h"
-#import "undo/undomanager.h"
+#import "UndoIntegration.h"
 
 extern DB_functions_t *deadbeef;
 
@@ -374,8 +373,7 @@ - (int)addSelectionToPlaylist:(ddb_playlist_t *)plt {
 
     int count = 0;
 
-    ddb_undobuffer_t *undobuffer = ddb_undomanager_get_buffer (ddb_undomanager_shared ());
-    ddb_undobuffer_group_begin (undobuffer);
+    ddb_undo->group_begin();
 
     ddb_playItem_t *prev = deadbeef->plt_get_last(plt, PL_MAIN);
     for (item in items) {
@@ -393,7 +391,7 @@ - (int)addSelectionToPlaylist:(ddb_playlist_t *)plt {
         count += 1;
     }
 
-    ddb_undobuffer_group_end (undobuffer);
+    ddb_undo->group_end ();
 
     if (prev != NULL) {
         deadbeef->pl_item_unref (prev);
@@ -423,7 +421,7 @@ - (void)outlineViewDoubleAction:(NSOutlineView *)sender {
 
     deadbeef->plt_unref (curr_plt);
 
-    ddb_undomanager_set_action_name (ddb_undomanager_shared(), "Add Files");
+    ddb_undo->set_action_name ("Add Files");
 
     deadbeef->sendmessage (DB_EV_PLAYLISTCHANGED, DDB_PLAYLIST_CHANGE_CONTENT, 0, 0);
     if (count > 0) {

diff --git a/plugins/cocoaui/Playlist/PlaylistContentView.m b/plugins/cocoaui/Playlist/PlaylistContentView.m
@@ -14,7 +14,7 @@
 #import "MedialibItemDragDropHolder.h"
 #import "PlaylistLocalDragDropHolder.h"
 #include <deadbeef/deadbeef.h>
-#import "undomanager.h"
+#import "UndoIntegration.h"
 
 extern DB_functions_t *deadbeef;
 
@@ -164,7 +164,7 @@ - (BOOL)performDragOperation:(id<NSDraggingInfo>)sender {
     }
 
 
-    ddb_undomanager_set_action_name (ddb_undomanager_shared(), "Drag & drop");
+    ddb_undo->set_action_name ("Drag & drop");
 
     if ([pboard.types containsObject:ddbPlaylistItemsUTIType]) {
         NSArray *classes = @[[PlaylistLocalDragDropHolder class]];

diff --git a/plugins/cocoaui/Undo/DdbUndoBuffer.h b/plugins/cocoaui/Undo/DdbUndoBuffer.h
@@ -22,13 +22,13 @@
 */
 
 #import <Foundation/Foundation.h>
-#include "undobuffer.h"
+#include <deadbeef/deadbeef.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
 @interface DdbUndoBuffer : NSObject
 
-- (instancetype)initWithUndoBuffer:(ddb_undobuffer_t *)buffer;
+- (instancetype)initWithUndoBuffer:(struct ddb_undobuffer_s *)buffer;
 - (void)apply;
 
 @end

diff --git a/plugins/cocoaui/Undo/DdbUndoBuffer.m b/plugins/cocoaui/Undo/DdbUndoBuffer.m
@@ -22,31 +22,31 @@
 */
 
 #import "DdbUndoBuffer.h"
-#include "undomanager.h"
-#include <deadbeef/deadbeef.h>
+#import <deadbeef/deadbeef.h>
+#import "UndoIntegration.h"
 
 extern DB_functions_t *deadbeef;
 
 @interface DdbUndoBuffer()
 
-@property (nonatomic) ddb_undobuffer_t *buffer;
+@property (nonatomic) struct ddb_undobuffer_s *buffer;
 
 @end
 
 @implementation DdbUndoBuffer
 
 - (void)dealloc {
-    ddb_undobuffer_free (_buffer);
+    ddb_undo->free_buffer (_buffer);
 }
 
-- (instancetype)initWithUndoBuffer:(ddb_undobuffer_t *)buffer {
+- (instancetype)initWithUndoBuffer:(struct ddb_undobuffer_s *)buffer {
     self = [super init];
     _buffer = buffer;
     return self;
 }
 
 - (void)apply {
-    ddb_undobuffer_execute(self.buffer, ddb_undomanager_get_buffer(ddb_undomanager_shared()));
+    ddb_undo->execute_buffer (self.buffer);
 
     deadbeef->sendmessage(DB_EV_PLAYLISTCHANGED, 0, 0, 0);
 }

diff --git a/plugins/cocoaui/Undo/NSUndoManager+DdbUndoBuffer.m b/plugins/cocoaui/Undo/NSUndoManager+DdbUndoBuffer.m
@@ -24,7 +24,9 @@
 #import "DdbUndoBuffer.h"
 #import "DdbUndoBufferRetainer.h"
 #import "NSUndoManager+DdbUndoBuffer.h"
-#include "undomanager.h"
+#import "UndoIntegration.h"
+
+extern DB_functions_t *deadbeef;
 
 @implementation NSUndoManager (DdbUndoBuffer)
 
@@ -41,9 +43,7 @@ - (void)registerUndoBuffer:(DdbUndoBuffer *)undoBuffer {
         [target apply];
         [DdbUndoBufferRetainer.shared releaseBuffer:target];
 
-        ddb_undobuffer_t *undobuffer = ddb_undomanager_consume_buffer(ddb_undomanager_shared());
-        DdbUndoBuffer *wrappedBuffer = [[DdbUndoBuffer alloc] initWithUndoBuffer:undobuffer];
-        [self registerUndoBuffer:wrappedBuffer];
+        deadbeef->undo_process();
     }];
 }
 

diff --git a/plugins/cocoaui/Undo/UndoIntegration.h b/plugins/cocoaui/Undo/UndoIntegration.h
@@ -0,0 +1,32 @@
+/*
+    DeaDBeeF -- the music player
+    Copyright (C) 2009-2024 Oleksiy Yakovenko and other contributors
+
+    This software is provided 'as-is', without any express or implied
+    warranty.  In no event will the authors be held liable for any damages
+    arising from the use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+
+    2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+
+    3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef UndoIntegration_h
+#define UndoIntegration_h
+
+#include <deadbeef/deadbeef.h>
+
+FOUNDATION_EXTERN ddb_undo_interface_t *ddb_undo;
+void UndoIntegrationInit(void);
+
+#endif /* UndoIntegration_h */