/**
 * Declaration of the native Cocoa View that serves as container for the scintilla parts.
 *
 * Created by Mike Lischke.
 *
 * Copyright 2011, 2013, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2009, 2011 Sun Microsystems, Inc. All rights reserved.
 * This file is dual licensed under LGPL v2.1 and the Scintilla license (http://www.scintilla.org/License.txt).
 */

#import <Cocoa/Cocoa.h>

#import "Scintilla.h"
#import "SciLexer.h"

#import "InfoBarCommunicator.h"

/**
 * Scintilla sends these two messages to the notify handler. Please refer
 * to the Windows API doc for details about the message format.
 */
#define WM_COMMAND 1001
#define WM_NOTIFY 1002

namespace Scintilla {
/**
 * On the Mac, there is no WM_COMMAND or WM_NOTIFY message that can be sent
 * back to the parent. Therefore, there must be a callback handler that acts
 * like a Windows WndProc, where Scintilla can send notifications to. Use
 * ScintillaView registerNotifyCallback() to register such a handler.
 * Message format is:
 * <br>
 * WM_COMMAND: HIWORD (wParam) = notification code, LOWORD (wParam) = control ID, lParam = ScintillaCocoa*
 * <br>
 * WM_NOTIFY: wParam = control ID, lParam = ptr to SCNotification structure, with hwndFrom set to ScintillaCocoa*
 */
typedef void(*SciNotifyFunc) (intptr_t windowid, unsigned int iMessage, uintptr_t wParam, uintptr_t lParam);

class ScintillaCocoa;
}

@class ScintillaView;

extern NSString *const SCIUpdateUINotification;

@protocol ScintillaNotificationProtocol
- (void)notification: (Scintilla::SCNotification*)notification;
@end

/**
 * SCIMarginView draws line numbers and other margins next to the text view.
 */
@interface SCIMarginView : NSRulerView
{
@private
  int marginWidth;
  ScintillaView *owner;
  NSMutableArray *currentCursors;
}

@property (assign) int marginWidth;
@property (assign) ScintillaView *owner;

- (id)initWithScrollView:(NSScrollView *)aScrollView;

@end

/**
 * SCIContentView is the Cocoa interface to the Scintilla backend. It handles text input and
 * provides a canvas for painting the output.
 */
@interface SCIContentView : NSView <
  NSTextInputClient,
  NSUserInterfaceValidations,
  NSDraggingSource,
  NSDraggingDestination>
{
@private
  ScintillaView* mOwner;
  NSCursor* mCurrentCursor;
  NSTrackingArea *trackingArea;

  // Set when we are in composition mode and partial input is displayed.
  NSRange mMarkedTextRange;
}

@property (nonatomic, assign) ScintillaView* owner;

- (void) setCursor: (int) cursor;

- (BOOL) canUndo;
- (BOOL) canRedo;

@end

@interface ScintillaView : NSView <InfoBarCommunicator, ScintillaNotificationProtocol>
{
@private
  // The back end is kind of a controller and model in one.
  // It uses the content view for display.
  Scintilla::ScintillaCocoa* mBackend;

  // This is the actual content to which the backend renders itself.
  SCIContentView* mContent;

  NSScrollView *scrollView;
  SCIMarginView *marginView;

  CGFloat zoomDelta;

  // Area to display additional controls (e.g. zoom info, caret position, status info).
  NSView <InfoBarCommunicator>* mInfoBar;
  BOOL mInfoBarAtTop;

  id<ScintillaNotificationProtocol> mDelegate;
}

@property (nonatomic, readonly) Scintilla::ScintillaCocoa* backend;
@property (nonatomic, assign) id<ScintillaNotificationProtocol> delegate;
@property (nonatomic, readonly) NSScrollView *scrollView;

+ (Class) contentViewClass;

- (void) notify: (NotificationType) type message: (NSString*) message location: (NSPoint) location
          value: (float) value;
- (void) setCallback: (id <InfoBarCommunicator>) callback;

- (void) suspendDrawing: (BOOL) suspend;
- (void) notification: (Scintilla::SCNotification*) notification;

// Scroller handling
- (void) setMarginWidth: (int) width;
- (SCIContentView*) content;
- (void) updateMarginCursors;

// NSTextView compatibility layer.
- (NSString*) string;
- (void) setString: (NSString*) aString;
- (void) insertText: (id) aString;
- (void) setEditable: (BOOL) editable;
- (BOOL) isEditable;
- (NSRange) selectedRange;

- (NSString*) selectedString;

- (void) deleteRange: (NSRange) range;

- (void)setFontName: (NSString*) font
               size: (int) size
               bold: (BOOL) bold
             italic: (BOOL) italic;

// Native call through to the backend.
+ (sptr_t) directCall: (ScintillaView*) sender message: (unsigned int) message wParam: (uptr_t) wParam
               lParam: (sptr_t) lParam;
- (sptr_t) message: (unsigned int) message wParam: (uptr_t) wParam lParam: (sptr_t) lParam;
- (sptr_t) message: (unsigned int) message wParam: (uptr_t) wParam;
- (sptr_t) message: (unsigned int) message;

// Back end properties getters and setters.
- (void) setGeneralProperty: (int) property parameter: (long) parameter value: (long) value;
- (void) setGeneralProperty: (int) property value: (long) value;

- (long) getGeneralProperty: (int) property;
- (long) getGeneralProperty: (int) property parameter: (long) parameter;
- (long) getGeneralProperty: (int) property parameter: (long) parameter extra: (long) extra;
- (long) getGeneralProperty: (int) property ref: (const void*) ref;
- (void) setColorProperty: (int) property parameter: (long) parameter value: (NSColor*) value;
- (void) setColorProperty: (int) property parameter: (long) parameter fromHTML: (NSString*) fromHTML;
- (NSColor*) getColorProperty: (int) property parameter: (long) parameter;
- (void) setReferenceProperty: (int) property parameter: (long) parameter value: (const void*) value;
- (const void*) getReferenceProperty: (int) property parameter: (long) parameter;
- (void) setStringProperty: (int) property parameter: (long) parameter value: (NSString*) value;
- (NSString*) getStringProperty: (int) property parameter: (long) parameter;
- (void) setLexerProperty: (NSString*) name value: (NSString*) value;
- (NSString*) getLexerProperty: (NSString*) name;

// The delegate property should be used instead of registerNotifyCallback which is deprecated.
- (void) registerNotifyCallback: (intptr_t) windowid value: (Scintilla::SciNotifyFunc) callback __attribute__((deprecated));

- (void) setInfoBar: (NSView <InfoBarCommunicator>*) aView top: (BOOL) top;
- (void) setStatusText: (NSString*) text;

- (BOOL) findAndHighlightText: (NSString*) searchText
                    matchCase: (BOOL) matchCase
                    wholeWord: (BOOL) wholeWord
                     scrollTo: (BOOL) scrollTo
                         wrap: (BOOL) wrap;

- (BOOL) findAndHighlightText: (NSString*) searchText
                    matchCase: (BOOL) matchCase
                    wholeWord: (BOOL) wholeWord
                     scrollTo: (BOOL) scrollTo
                         wrap: (BOOL) wrap
                    backwards: (BOOL) backwards;

- (int) findAndReplaceText: (NSString*) searchText
                    byText: (NSString*) newText
                 matchCase: (BOOL) matchCase
                 wholeWord: (BOOL) wholeWord
                     doAll: (BOOL) doAll;

@end