Code to allow drag and drop parsing of headers.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/apps/gorm/trunk@21146 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,14 @@
+2005-04-23 02:50 Gregory John Casamento <greg_casamento@yahoo.com>
+
+	* GormCore/GormClassEditor.m: Implementation of editor/dragging
+	methods.
+	* GormCore/GormDocument.m: Uncommented the section of the
+	changeToTopLevelEditorAcceptingTypes: method which switches to the
+	classes view.
+	* GormCore/GormGenericEditor.m: Added implementation for
+	fileTypes.
+	* GormCore/GormPrivate.h: Added declaration of fileTypes. 
+
 2005-04-22 17:15 Gregory John Casamento <greg_casamento@yahoo.com>
 
 	* GormCore/GormDocument.h: Changed signature.

GormCore/GormClassEditor.m

@@ -49,8 +49,11 @@ NSString *GormClassPboardType = @"GormClassPboardType";
 		 alpha: 1.0 ];
       NSTableColumn  *tableColumn;
 
-      document = doc; // loose connection
+      // weak connections...
+      document = doc; 
       classManager = [doc classManager];
+
+      // set up the outline view...
       [self setDataSource: self];
       [self setDelegate: self];  
       [self setAutoresizesAllColumnsToFit: YES];
@@ -61,7 +64,8 @@ NSString *GormClassPboardType = @"GormClassPboardType";
       [self setIndentationPerLevel: 10];
       [self setAttributeOffset: 30];
       [self setRowHeight: 18];
-      [self registerForDraggedTypes: [NSArray arrayWithObjects: NSFilenamesPboardType, nil]];
+      [self registerForDraggedTypes: [NSArray arrayWithObjects: NSFilenamesPboardType, 
+					      GormLinkPboardType, nil]];
       [self setMenu: [(id<Gorm>)NSApp classMenu]]; 
       [self setBackgroundColor: salmonColor ];
 
@@ -95,6 +99,11 @@ NSString *GormClassPboardType = @"GormClassPboardType";
 
       // expand all of the items in the classesView...
       [self expandItem: @"NSObject"];
+
+      // register for types...
+      [self registerForDraggedTypes: [NSArray arrayWithObjects: GormLinkPboardType, 
+					      NSFilenamesPboardType, 
+					      nil]];
     }
   return self;
 }
@@ -513,6 +522,171 @@ NSString *GormClassPboardType = @"GormClassPboardType";
     }  
 }
 */
+
+/*
+ *	Dragging source protocol implementation
+ */
+- (void) draggedImage: (NSImage*)i endedAt: (NSPoint)p deposited: (BOOL)f
+{
+  // no image.
+}
+
+- (unsigned) draggingEntered: (id<NSDraggingInfo>)sender
+{
+  NSPasteboard *pb = [sender draggingPasteboard];
+  NSArray *pbTypes = [pb types];
+  unsigned int oper = NSDragOperationNone;
+  NSString *ext = nil;
+
+  // Get the resource manager first, if nil don't bother calling the rest...
+  if([pbTypes containsObject: NSFilenamesPboardType] == YES)
+    {
+      NSArray *types = [self fileTypes];
+      NSArray *data = [pb propertyListForType: NSFilenamesPboardType];
+      NSString *fileName = nil;
+      NSEnumerator *en = [data objectEnumerator];
+
+      while((fileName = [en nextObject]) != nil)
+	{
+	  ext = [fileName pathExtension];
+	  if([types containsObject: ext])
+	    {
+	      oper = NSDragOperationCopy;
+	      break;
+	    }
+	  else
+	    {
+	      oper = NSDragOperationNone;
+	      break;
+	    }
+	}
+    }
+
+  if(oper == NSDragOperationNone)
+    {      
+      [(GormDocument *)document changeToTopLevelEditorAcceptingTypes: pbTypes 
+		       andFileType: ext];
+    }
+
+  return oper;
+}
+
+- (unsigned) draggingUpdate: (id<NSDraggingInfo>)sender
+{
+  return [self draggingEntered: sender]; 
+}
+
+- (BOOL) performDragOperation: (id<NSDraggingInfo>)sender
+{ 
+  NSPasteboard *pb = [sender draggingPasteboard];
+  NSArray *types = [pb types];
+
+  if ([types containsObject: NSFilenamesPboardType])
+    {
+      NSArray *data;
+      NSEnumerator *en = nil;
+      NSString *fileName = nil;
+
+      data = [pb propertyListForType: NSFilenamesPboardType];
+      if(data != nil)
+	{
+	  en = [data objectEnumerator];
+	  while((fileName = [en nextObject]) != nil)
+	    {
+	      [classManager parseHeader: fileName];
+	    }
+	  return YES;
+	}
+      else
+	{
+	  return NO;
+	}
+    }
+
+  return NO;
+}
+
+- (BOOL) prepareForDragOperation: (id<NSDraggingInfo>)sender
+{
+  return YES;
+}
+
+// IBEditor protocol
+
+- (BOOL) acceptsTypeFromArray: (NSArray*)types
+{
+  return [types containsObject: NSFilenamesPboardType];
+}
+
+- (BOOL) activate
+{
+  return YES;
+}
+
+- (id) initWithObject: (id)anObject inDocument: (id/*<IBDocuments>*/)aDocument
+{
+  return [self initWithDocument: aDocument];
+}
+
+- (void) close
+{
+  // does nothing.
+}
+
+- (void) closeSubeditors
+{
+  // does nothing.
+}
+
+- (void) deactivate
+{
+  // does nothing.
+}
+
+- (id /*<IBDocuments>*/) document
+{
+  return document;
+}
+
+- (id) editedObject
+{
+  return selectedClass;
+}
+
+- (void) orderFront
+{
+  [[self window] orderFront: self];
+}
+
+- (id<IBEditors>) openSubeditorForObject: (id)object
+{
+  return nil;
+}
+
+- (void) resetObject: (id)anObject
+{
+  // does nothing.
+}
+
+- (BOOL) wantsSelection
+{
+  return NO;
+}
+
+- (void) validateEditing
+{
+  // does nothing.
+}
+
+- (NSWindow *) window
+{
+  return [super window];
+}
+
+- (NSArray *) fileTypes
+{
+  return [NSArray arrayWithObject: @"h"];
+}
 @end
 
 @implementation GormClassEditor (NSOutlineViewDataSource)

GormCore/GormDocument.m

@@ -829,13 +829,11 @@ static NSImage  *fileImage = nil;
     {
       [self changeToViewWithTag: 2];
     }
-  /*
   else if([classesView acceptsTypeFromArray: types] &&
 	  [[classesView fileTypes] containsObject: fileType])
     {
       [self changeToViewWithTag: 3];
     }
-  */
 }
 
 /**

GormCore/GormGenericEditor.m

@@ -362,4 +362,9 @@
 {
   // does nothing.
 }
+
+- (NSArray *)fileTypes
+{
+  return nil;
+}
 @end

GormCore/GormPrivate.h

@@ -82,7 +82,7 @@ extern NSString *GormResizeCellNotification;
 - (NSString*) sizeInspectorClassName;
 @end
 
-@interface GormClassEditor : GormOutlineView <IBSelectionOwners>
+@interface GormClassEditor : GormOutlineView <IBEditors, IBSelectionOwners>
 {
   GormDocument          *document;
   GormClassManager      *classManager;
@@ -101,6 +101,7 @@ extern NSString *GormResizeCellNotification;
 - (void) createSubclass;
 - (void) addAttributeToClass;
 - (void) deleteSelection;
+- (NSArray *) fileTypes;
 @end
 
 @interface	GormGenericEditor : NSMatrix <IBEditors, IBSelectionOwners>
@@ -143,6 +144,7 @@ extern NSString *GormResizeCellNotification;
 
 - (NSArray *) objects;
 - (BOOL) isOpened;
+- (NSArray *) fileTypes;
 @end
 
 // private methods...
@@ -174,7 +176,6 @@ extern NSString *GormResizeCellNotification;
 - (unsigned int) draggingSourceOperationMaskForLocal: (BOOL)flag;
 - (void) refreshCells;
 - (id) placeHolderWithPath: (NSString *)path;
-- (NSArray *) fileTypes;
 - (NSArray *) pbTypes;
 - (NSString *) resourceType;
 - (void) addSystemResources;