/*
   GNUstep ProjectCenter - http://www.gnustep.org/experience/ProjectCenter.html

   Copyright (C) 2000-2014 Free Software Foundation

   Authors: Philippe C.D. Robert
            Serg Stoyan

   This file is part of GNUstep.

   This application 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 2 of the License, or (at your option) any later version.

   This application 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
   Library General Public License for more details.

   You should have received a copy of the GNU General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
*/

#import <ProjectCenter/PCDefines.h>
#import <ProjectCenter/PCButton.h>

#import <ProjectCenter/PCProjectManager.h>
#import <ProjectCenter/PCProject.h>

#import <ProjectCenter/PCProjectWindow.h>
#import <ProjectCenter/PCProjectBrowser.h>
#import <ProjectCenter/PCProjectEditor.h>
#import <ProjectCenter/PCProjectBuilder.h>
#import <ProjectCenter/PCProjectLauncher.h>
#import <ProjectCenter/PCProjectLoadedFiles.h>
#import <ProjectCenter/PCProjectInspector.h>

#import <Protocols/Preferences.h>
#import <Protocols/CodeEditorView.h>
#import <ProjectCenter/PCLogController.h>

#import "Modules/Preferences/Misc/PCMiscPrefs.h"


#import <math.h>

@implementation PCProjectWindow

// ============================================================================
// ==== Intialization & deallocation
// ============================================================================

- (void)_createCustomView
{
  customView = [[NSBox alloc] initWithFrame:NSMakeRect(-1,-1,562,252)];
  [customView setTitlePosition:NSNoTitle];
  [customView setBorderType:NSNoBorder];
  [customView setContentViewMargins:NSMakeSize(0.0,0.0)];
  [customView setAutoresizingMask: NSViewWidthSizable | NSViewHeightSizable];

  // Editor in the Box
  [customView setContentView:[[project projectEditor] componentView]];

  [h_split addSubview:customView];
  RELEASE(customView);
  [h_split adjustSubviews];
}

- (void)awakeFromNib
{
  id <PCPreferences> prefs = [[project projectManager] prefController];
  NSRect rect;

  [buildButton setToolTip:@"Project Builder"];
  [buildButton setImage:IMAGE(@"Build")];

  [launchButton setToolTip:@"Project Launcher"];
  [launchButton setImage:IMAGE(@"Run")];
  if (![project isExecutable])
    {
      [launchButton setEnabled:NO];
    }

  [loadedFilesButton setToolTip:@"Loaded Files"];
  [loadedFilesButton setImage:IMAGE(@"Files")];
  if (![prefs boolForKey:UseTearOffWindows])
    {
      [loadedFilesButton setEnabled:NO];
    }

  [findButton setToolTip:@"Project Finder"];
  [findButton setImage:IMAGE(@"Find")];

  [inspectorButton setToolTip:@"Project Inspector"];
  [inspectorButton setImage:IMAGE(@"Inspector")];

  [fileIcon setFileNameField:fileIconTitle];
  [fileIcon setDelegate:[project projectBrowser]];
  [fileIcon updateIcon];

  [statusLine setStringValue:@""];
    
  /*
   * Horizontal split view
   */
  rect = [[projectWindow contentView] frame];
  rect.size.height -= 62;
  rect.size.width -= 16;
  rect.origin.x += 8;
  rect.origin.y = -2;
  [h_split setDelegate:self];

  /*
   * Vertical split view
   */
  rect = [[projectWindow contentView] frame];
  if (h_split)
    {
      rect.size.height = 185;
    }
  v_split = [[NSSplitView alloc] initWithFrame:rect];
  [v_split setAutoresizingMask:(NSViewWidthSizable | NSViewHeightSizable)];
  [v_split setVertical:YES];
  [v_split setDelegate:self];

  /*
   * File Browser
   */
  browserView = [[project projectBrowser] view];
  [v_split addSubview:browserView];
  
  /*
   * LoadedFiles
   */
  if (![prefs boolForKey:UseTearOffWindows])
    {
      [self showProjectLoadedFiles:self];
    }

  [h_split addSubview:v_split];
  RELEASE(v_split);

  /*
   * Custom view
   * View where non-separated Builder, Launcher, Editor goes.
   */ 
  [self _createCustomView];
}

- (id)initWithProject:(PCProject *)owner 
{
  if ((self = [super init]))
    {
      NSDictionary *pcWindows;
      NSString     *windowFrame;

      project = owner;
      _isToolbarVisible = YES;
      _splitViewsRestored = NO;

      if (projectWindow == nil)
	{
	  if ([NSBundle loadNibNamed:@"ProjectWindow" owner:self] == NO)
	    {
	      PCLogError(self, @"error loading ProjectWindow NIB file!");
	      return nil;
	    }
	}
      [self setTitle];
      
      // Window
      [projectWindow setFrameAutosaveName:@"ProjectWindow"];

      pcWindows = [[project projectDict] objectForKey:PCWindows];
      windowFrame = [pcWindows objectForKey:@"ProjectWindow"];
//      PCLogInfo(self, @"window frame %@", windowFrame);
      if (windowFrame != nil)
	{
	  PCLogStatus(self, @"PCProjectWindow: set frame from project");
	  [projectWindow setFrameFromString:windowFrame];
	}
      else if (![projectWindow setFrameUsingName: @"ProjectWindow"])
	{
	  [projectWindow center];
	}
	
      // Toolbar
      if ([[pcWindows objectForKey:@"ShowToolbar"] isEqualToString:@"NO"])
	{
	  [self toggleToolbar];
	}

      // Project dictionary
      [[NSNotificationCenter defaultCenter] 
	addObserver:self
	   selector:@selector(projectDictDidChange:)
	       name:PCProjectDictDidChangeNotification
	     object:nil];

      [[NSNotificationCenter defaultCenter] 
	addObserver:self
	   selector:@selector(projectDictDidSave:)
	       name:PCProjectDictDidSaveNotification
	     object:nil];

      // Active project changing
      [[NSNotificationCenter defaultCenter] 
	addObserver:self
	   selector:@selector(activeProjectDidChange:)
	       name:PCActiveProjectDidChangeNotification
	     object:nil];
	     
      // ProjectCenter preferences
      [[NSNotificationCenter defaultCenter] 
	addObserver:self
	   selector:@selector(preferencesDidChange:)
	       name:PCPreferencesDidChangeNotification
	     object:nil];
	     
      // Track Browser selection changes for file icon updates
      [[NSNotificationCenter defaultCenter] 
	addObserver:self
	   selector:@selector (browserDidSetPath:)
	       name:PCBrowserDidSetPathNotification
	     object:[project projectBrowser]];

      // Editor changes
      [[NSNotificationCenter defaultCenter] 
	addObserver:self
	   selector:@selector (editorDidChange:)
	       name:PCEditorDidChangeNotification
	     object:nil];
      [[NSNotificationCenter defaultCenter] 
	addObserver:self
	   selector:@selector (editorDidSave:)
	       name:PCEditorDidSaveNotification
	     object:nil];
      [[NSNotificationCenter defaultCenter] 
	addObserver:self
	   selector:@selector (editorDidRevert:)
	       name:PCEditorDidRevertNotification
	     object:nil];
    }
  
  return self;
}

- (void)setTitle
{
  NSString *name = [project projectName];
  NSString *path = [[project projectPath] stringByAbbreviatingWithTildeInPath];
  NSString *language = [[project projectDict] objectForKey:PCLanguage];

  [projectWindow 
    setTitle:[NSString stringWithFormat:@"%@ - %@ [%@]",name,path,language]];
}

- (void)dealloc
{
  [[NSNotificationCenter defaultCenter] removeObserver:self];
  [projectWindow close];

  [super dealloc];
}

// ============================================================================
// ==== Accessory methods
// ============================================================================

// TODO: Should be removed when two modes will be implemented:
// Build, Launch and Loaded Files are tear-off and tear-on.
// Custom view is always shown because editor always opened on
// one click in Browser. External editor will be opened only on
// double click.
- (NSView *)customContentView
{
  return [customView contentView];
}

- (void)setCustomContentView:(NSView *)subview
{
  if (!customView)
    {
      return;
    }

  [customView setContentView:subview];
  [customView display];
}

- (void)updateStatusLineWithText:(NSString *)text
{
  [statusLine setStringValue:text];
}

// ============================================================================
// ==== Actions
// ============================================================================

- (void)showProjectBuild:(id)sender
{
  id <PCPreferences> prefs = [[project projectManager] prefController];
  NSView             *view = [[project projectBuilder] componentView];
  NSPanel            *buildPanel = [[project projectManager] buildPanel];
  PCProject          *rootActiveProject;

  rootActiveProject = [[project projectManager] rootActiveProject];
  
//  NSLog(@"ProjectWindow showProjectBuild: componentView RC:%i", 
//	[view retainCount]);

  if ([prefs boolForKey:UseTearOffWindows])
    {
      if ([customView contentView] == view)
	{
	  [self showProjectEditor:self];
	}
      if (rootActiveProject == project)
	{
	  [buildPanel orderFront:nil];
	}
    }
  else
    {
      if ((rootActiveProject == project) && [buildPanel isVisible])
	{
	  [buildPanel close];
	}
      [self setCustomContentView:view];
    }
}

- (void)showProjectLaunch:(id)sender
{
  id <PCPreferences> prefs = [[project projectManager] prefController];
  NSView             *view = nil;
  NSPanel            *launchPanel = nil;

  view = [[project projectLauncher] componentView];
  launchPanel = [[project projectManager] launchPanel];

  if ([prefs boolForKey:UseTearOffWindows])
    {
      if ([customView contentView] == view)
	{
	  [self showProjectEditor:self];
	}
      [launchPanel orderFront:nil];
    }
  else
    {
      if ([launchPanel isVisible])
	{
	  [launchPanel close];
	}
      [self setCustomContentView:view];
    }
}

- (void)showProjectLoadedFiles:(id)sender
{
  id <PCPreferences> prefs = [[project projectManager] prefController];
  NSPanel            *panel = [[project projectManager] loadedFilesPanel];
  PCProject          *rootActiveProject;
  NSScrollView       *componentView;

  rootActiveProject = [[project projectManager] rootActiveProject];
  componentView = (NSScrollView *)[[project projectLoadedFiles] componentView];
      
//  PCLogInfo(self, @"showProjectLoadedFiles");

  if ([prefs boolForKey:UseTearOffWindows])
    {
      [componentView setBorderType:NSNoBorder];
      [componentView removeFromSuperview];
      if (rootActiveProject == project)
	{
	  [panel orderFront:nil];
	}
      [v_split adjustSubviews];
    }
  else
    {
      if ((rootActiveProject == project) && panel && [panel isVisible])
	{
	  [panel close];
	}

      [componentView setBorderType:NSBezelBorder];
      // Preserve width of view in panel
//      [componentView setFrame:NSMakeRect(0,0,128,130)];
      [v_split addSubview:componentView];
      [v_split adjustSubviews];
    }
}

- (void)showProjectInspector:(id)sender
{
  [[project projectManager] showProjectInspector:sender];
}

- (void)showProjectEditor:(id)sender
{
  [self setCustomContentView:[[project projectEditor] componentView]];
  [self makeFirstResponder:firstResponder];
}

- (BOOL)isToolbarVisible
{
  return _isToolbarVisible;
}

- (void)toggleToolbar
{
  NSRect rect;
  NSView *cView = [projectWindow contentView];

  if (_isToolbarVisible)
    {
      RETAIN(toolbarView);
      [toolbarView removeFromSuperview];
      if (h_split)
	{
	  rect = [h_split frame];
	  rect.size.height += 48;

	  // Hack. NSBrowser resizes incorrectly without removing/adding
	  // from/to superview
	  RETAIN(h_split);
	  [h_split removeFromSuperview];
          rect = [cView centerScanRect: rect];
	  [h_split setFrame:rect];
	  [cView addSubview:h_split];
	  RELEASE(h_split);
	}
      else if (v_split)
	{
	  rect = [v_split frame];
	  rect.size.height += 48;

	  // Hack. See above
	  RETAIN(v_split);
	  [v_split removeFromSuperview];
	  [v_split setFrame:rect];
          rect = [cView centerScanRect: rect];
	  [cView addSubview:v_split];
	  RELEASE(v_split);
	}
      _isToolbarVisible = NO;
    }
  else
    {
      rect = [cView frame];
      rect.origin.x = 8;
      rect.origin.y = rect.size.height - 57;
      rect.size.width -= 16;
      rect.size.height = 48;
      [toolbarView setFrame:rect];

      [cView addSubview:toolbarView];
      RELEASE(toolbarView);
      if (h_split)
	{
	  rect = [h_split frame];
	  rect.size.height -= 48;

	  // Hack. See above
	  RETAIN(h_split);
	  [h_split removeFromSuperview];
          rect = [cView centerScanRect: rect];
	  [h_split setFrame:rect];
	  [cView addSubview:h_split];
	  RELEASE(h_split);
	}
      else if (v_split)
	{
	  rect = [v_split frame];
	  rect.size.height -= 48;

	  // Hack. See above
	  RETAIN(v_split);
	  [v_split removeFromSuperview];
	  [v_split setFrame:rect];
	  [cView addSubview:v_split];
	  RELEASE(v_split);
	}
      _isToolbarVisible = YES;
    }
}

// ============================================================================
// ==== Notifications
// ============================================================================

- (void)projectDictDidChange:(NSNotification *)aNotif
{
  NSDictionary *notifObject = [aNotif object];
  PCProject    *changedProject = [notifObject objectForKey:@"Project"];

  if (changedProject != project 
      && changedProject != [project activeSubproject])
    {
      return;
    }
    
  [self setTitle];

  // TODO: if window isn't visible and "edited" attribute set, after ordering
  // front window doesn't show broken close button. Fix it in GNUstep.
  // Workaround is in windowDidBecomeKey.
  [projectWindow setDocumentEdited:YES];
}

- (void)projectDictDidSave:(NSNotification *)aNotif
{
  PCProject *savedProject = [aNotif object];
  
  if (savedProject != project 
      && savedProject != [project activeSubproject]
      && [savedProject superProject] != [project activeSubproject])
    {
      return;
    }

  [projectWindow setDocumentEdited:NO];
}

- (void)activeProjectDidChange:(NSNotification *)aNotif 
{
/*  PCProject *activeProject = [aNotif object];
  
  if (activeProject != project 
      && activeProject != [project activeSubproject]
      && [activeProject superProject] != [project activeSubproject])
    {
      return;
    }

  [self makeKeyWindow];*/
}

// TODO: Review determining of tear-off panels. Current implementation
// loads Build, Launch and Loaded Files to check visibility status.
// It is incorrect behaviour; Build. Launch and LoadedFiles initialized
// even if not in use.
- (void)preferencesDidChange:(NSNotification *)aNotif
{
  id <PCPreferences> prefs = [aNotif object];
 
  NSLog(@"ProjectWindow: Preferences did change");

/*  if ([[project projectManager] rootActiveProject] != project)
    {
      return;
    }*/

  if ([prefs boolForKey:UseTearOffWindows])
    {
      // Project Build 
      if ([[[project projectBuilder] componentView] window] == projectWindow)
	{
	  [self showProjectBuild:self];
	}
      // Project Launch
      if ([[[project projectLauncher] componentView] window] == projectWindow)
	{
	  [self showProjectLaunch:self];
	}
      // Loaded Files
      if ([[v_split subviews] count] == 2)
	{
	  [self showProjectLoadedFiles:self];
	}
      [loadedFilesButton setEnabled:YES];
    }
  else
    {
      NSPanel *buildPanel = [[project projectManager] buildPanel];
      NSPanel *launchPanel = [[project projectManager] launchPanel];
      
      // Project Build 
      if ([buildPanel isVisible] == YES)
	{
	  [self showProjectBuild:self];
	}
      // Project Launch
      if ([launchPanel isVisible] == YES)
	{
	  [self showProjectLaunch:self];
	}
      // Loaded Files
      if ([[v_split subviews] count] == 1)
	{
	  [self showProjectLoadedFiles:self];
	}
      [loadedFilesButton setEnabled:NO];
    }
}

- (void)browserDidSetPath:(NSNotification *)aNotif
{
  PCProjectBrowser *browser = [aNotif object];

  if (browser != [project projectBrowser])
    {
      return;
    }
  
  [fileIcon updateIcon];
}

- (void)editorDidChange:(NSNotification *)aNotif
{
  id<CodeEditor> editor = [aNotif object];
  
  if ([editor editorManager] != [project projectEditor])
    {
      return;
    }

  [fileIcon updateIcon];
}

- (void)editorDidSave:(NSNotification *)aNotif
{
  id<CodeEditor> editor = [aNotif object];
  
  if ([editor editorManager] != [project projectEditor])
    {
      return;
    }

  [fileIcon updateIcon];
}

- (void)editorDidRevert:(NSNotification *)aNotif
{
  id<CodeEditor> editor = [aNotif object];
  
  if ([editor editorManager] != [project projectEditor])
    {
      return;
    }

  [fileIcon updateIcon];
}

// ============================================================================
// ==== Window delegate
// ============================================================================

- (NSString *)stringWithSavedFrame
{
  return [projectWindow stringWithSavedFrame];
}

- (void)makeKeyAndOrderFront:(id)sender
{
//  PCLogInfo(self, @"makeKeyAndOrderFront sender: %@", [sender className]);
  [projectWindow makeKeyAndOrderFront:nil];
}

- (void)makeKeyWindow
{
  [projectWindow makeKeyWindow];
}

- (void)orderFront:(id)sender
{
  if (projectWindow)
    {
      [projectWindow orderFront:sender];
    }
}

- (void)center
{
  [projectWindow center];
}

// [NSWindow close] doesn't send windowShouldClose
- (void)close
{
  [projectWindow close];
}

- (void)performClose:(id)sender
{
  [projectWindow performClose:sender];
}

- (BOOL)isDocumentEdited 
{
  return [projectWindow isDocumentEdited];
}

- (BOOL)isKeyWindow
{
  return [projectWindow isKeyWindow];
}

- (BOOL)makeFirstResponder:(NSResponder *)aResponder
{
  firstResponder = aResponder;
  [projectWindow makeFirstResponder:firstResponder];

  return YES;
}

- (void)windowDidBecomeKey:(NSNotification *)aNotification
{
  [projectWindow makeMainWindow];
//  [projectWindow makeFirstResponder:(NSResponder *)firstResponder];

/*  PCLogInfo(self, @"windowDidBecomeKey: activeSubproject %@",
	    [[project activeSubproject] projectName]);*/

  if ([[project projectManager] rootActiveProject] != project)
    {
      if ([project activeSubproject] != nil)
	{
	  [[project projectManager] 
	    setActiveProject:[project activeSubproject]];
	}
      else
	{
	  [[project projectManager] setActiveProject:project];
	}
    }

  // Workaround
  if ([projectWindow isDocumentEdited])
    {
      [projectWindow setDocumentEdited:NO];
      [projectWindow setDocumentEdited:YES];
    }
}

- (void)windowDidResignKey:(NSNotification *)aNotification
{
//  [projectWindow makeFirstResponder:nil];
}

- (void)windowDidBecomeMain:(NSNotification *)aNotification
{
}

- (BOOL)windowShouldClose:(id)sender
{
  return [project close:self];
}

- (void)windowWillClose:(NSNotification *)aNotification
{
}

- (NSUndoManager *)windowWillReturnUndoManager:(NSWindow *)window
{
  id responder;

  responder = [window firstResponder];
  if ([responder conformsToProtocol: @protocol(CodeEditorView)])
    {
      return [[responder editor] windowWillReturnUndoManager: window];
    }
  return nil;
}

// ============================================================================
// ==== SplitView delegate
// ============================================================================

// Subviews: browser and loaded files
- (void)resizeVerticalSubiewsWithOldSize:(NSSize)oldSize
{
  NSSize       splitSize = [v_split frame].size;
  NSDictionary *projectDict = nil;
  NSDictionary *windowsDict = nil;
  NSString     *browserString = nil;
  NSRect       browserRect = NSMakeRect(0,0,0,0);
  NSRect       boxRect;

//  NSLog(@"resizeVerticalSubiewsWithOldSize entered split view width: %f, height %f", splitSize.width, splitSize.height);

  boxRect = [v_split frame];
  [v_split setFrame:boxRect];

  if (splitSize.width == oldSize.width && splitSize.height == oldSize.height)
    {
      return;
    }

//  NSLog(@"resize vertical split view");
//  NSLog(@"v_split %@", NSStringFromRect([v_split frame]));

  if (!_splitViewsRestored)
    {
      projectDict = [project projectDict];
      windowsDict = [projectDict objectForKey:PCWindows];
      if (windowsDict != nil)
	{
	  browserString = [windowsDict objectForKey:@"ProjectBrowser"];
	  if (browserString != nil && ![browserString isEqualToString:@""])
	    {
	      browserRect = NSRectFromString(browserString);
	    }
	}
      // Unable to restore browser frame
      if (browserRect.size.width == 0 && browserRect.size.height == 0)
	{
	  browserRect = NSMakeRect(0, 0, splitSize.width, splitSize.height);
	}
      [browserView setFrame:browserRect];
    }

  // Use saved frame of ProjectBrowser only first time. Every time window is
  // resized use new size of subviews.
/*  if (_splitViewsRestored)
    {
      browserRect = [[[project projectBrowser] view] frame];
      browserRect.size.height = splitSize.height;
      if ([[prefs objectForKey:UseTearOffWindows] isEqualToString:@"YES"])
	{
	  browserRect.size.width = splitSize.width;
	}
    }

  // Browser
  NSLog(@"%@ browser %@",
	[project projectName], NSStringFromRect(browserRect));
  [browserView setFrame:browserRect];*/

  // Loaded Files 
/*  if ([[prefs objectForKey:UseTearOffWindows] isEqualToString:@"NO"])
    {
      boxRect.origin.x = browserRect.size.width + [v_split dividerThickness];
      boxRect.origin.y = 0;
      boxRect.size.width = [v_split frame].size.width - boxRect.origin.x;
      boxRect.size.height = [v_split frame].size.height;

      if (boxRect.size.width < 60)
	{
	  boxRect.size.width = 60;
	  boxRect.origin.x = [v_split frame].size.width - boxRect.size.width;
	}

      NSLog(@"%@ loadedFiles %@",
	    [project projectName], NSStringFromRect(boxRect));
      [[[project projectLoadedFiles] componentView] setFrame:boxRect];
    }*/

  [v_split adjustSubviews];

  _splitViewsRestored = YES;
}

// Subviews: vertical split view and custom view
- (void)resizeHorizontalSubiewsWithOldSize:(NSSize)oldSize
{
  NSSize splitSize = [h_split frame].size;
  NSSize hSplitSize;
  NSRect vSplitRect;
  NSRect boxRect;
  
//  NSLog(@"resizeHorizontalSubiewsWithOldSize entered split view width: %f, height %f", splitSize.width, splitSize.height);

  if (splitSize.width == oldSize.width && splitSize.height == oldSize.height)
    {
      return;
    }

//  NSLog(@"resize horizontal split view");

  hSplitSize = [h_split frame].size;
  
  // Vertical Split View
  vSplitRect = [browserView frame];
  vSplitRect.origin.x = 0;
  vSplitRect.origin.y = 0;
/*  if (![self hasCustomView])
    {
      vSplitRect.size = hSplitSize;
    }
  else
    {*/
      vSplitRect.size.width = hSplitSize.width;
/*    }*/
  vSplitRect = [browserView centerScanRect: vSplitRect];
  [v_split setFrame:vSplitRect];
  
  // Custom view (Editor|Builder|Launcher)
/*  if ([self hasCustomView])
    {*/
      boxRect.origin.x = 0;
      boxRect.origin.y = vSplitRect.size.height + [h_split dividerThickness];
      boxRect.size.width = hSplitSize.width;
      boxRect.size.height = hSplitSize.height - boxRect.origin.y;
      boxRect = [customView centerScanRect: boxRect];
      [customView setFrame:boxRect];
//    }
}

- (void)         splitView:(NSSplitView *)sender
 resizeSubviewsWithOldSize:(NSSize)oldSize
{
  if (sender == v_split)
    {
      [self resizeVerticalSubiewsWithOldSize:oldSize];
    }
  else
    {
      [self resizeHorizontalSubiewsWithOldSize:oldSize];
    }

  return;
}

@end