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/*

 *  R.app : a Cocoa front end to: "R A Computer Language for Statistical Data Analysis"

 *  

 *  R.app Copyright notes:

 *                     Copyright (C) 2004-5  The R Foundation

 *                     written by Stefano M. Iacus and Simon Urbanek

 *

 *                  

 *  R Copyright notes:

 *                     Copyright (C) 1995-1996   Robert Gentleman and Ross Ihaka

 *                     Copyright (C) 1998-2001   The R Development Core Team

 *                     Copyright (C) 2002-2004   The R Foundation

 *

 *  This program 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 program 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 General Public License for more details.

 *

 *  A copy of the GNU General Public License is available via WWW at

 *  http://www.gnu.org/copyleft/gpl.html.  You can also obtain it by

 *  writing to the Free Software Foundation, Inc., 59 Temple Place,

 *  Suite 330, Boston, MA  02111-1307  USA.

 */

#import "RGUI.h"

#import "HelpManager.h"

#import "RController.h"

#import "REngine/REngine.h"

static id sharedHMController;

@implementation HelpManager

- (id)init

{

    self = [super init];

    if (self) {

		sharedHMController = self;

	}

    return self;

}

- (void)dealloc {

	[super dealloc];

}

- (IBAction)runHelpSearch:(id)sender

{

	if([[sender stringValue] length]==0) 

		return;

	NSString *searchString;

	NSCharacterSet *charSet;

	charSet = [NSCharacterSet characterSetWithCharactersInString:@"'\""];

	searchString = [[sender stringValue] stringByTrimmingCharactersInSet:charSet];

	SLog(@"runHelpSearch: <%@>", searchString);

	//		[self sendInput:[NSString stringWithFormat:@"help(\"%@\")", searchString]];

	if(searchType == kFuzzyMatch){

		[[REngine mainEngine] executeString:[NSString stringWithFormat:@"print(help.search(\"%@\"))", searchString]];

			[sender setStringValue:@""];

	} else {

		[self showHelpFor: searchString];

	}

}

- (void)showHelpUsingFile: (NSString *)file topic: (NSString*) topic

{

	NSString *url = [NSString stringWithFormat:@"file://%@",file];

	// NSLog(@"showHelpUsingFile:\"%@\", topic=%@, URL=%@", file, topic, url);

	if(url != nil)

	 	[[HelpView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];

	[helpWindow makeKeyAndOrderFront:self];

}

- (void)showHelpFor:(NSString *)topic

{

	NSString *searchString;

	NSCharacterSet *charSet;

	charSet = [NSCharacterSet characterSetWithCharactersInString:@"'\""];

	searchString = [topic stringByTrimmingCharactersInSet:charSet];

//	NSLog(@"showHelpFor: <%@>", searchString);

	REngine *re = [REngine mainEngine];	

	RSEXP *x= [re evaluateString:[NSString stringWithFormat:@"as.character(help(\"%@\", htmlhelp=TRUE))",searchString]];

	if ((x==nil) || ([x string]==NULL)) {

		NSString *topicString = [[[NSString alloc] initWithString: @"Topic: "] stringByAppendingString:searchString];

		int res = NSRunInformationalAlertPanel(NLS(@"Can't find help for topic, would you like to expand the search?"), topicString, NLS(@"No"), NLS(@"Yes"), nil);

		if (!res)

			[[REngine mainEngine] executeString:[NSString stringWithFormat:@"print(help.search(\"%@\"))", searchString]];

		return;

	}

	NSString *url = [NSString stringWithFormat:@"file://%@",[x string]];

	if(url != nil)

	 	[[HelpView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];

	[helpWindow makeKeyAndOrderFront:self];

	[x release];

}

- (NSWindow*) window

{

	return helpWindow;

}

- (IBAction)showMainHelp:(id)sender

{

	 REngine *re = [REngine mainEngine];	

	 RSEXP *x = [re evaluateString:@"try(getOption(\"main.help.url\"))"];

	 if ((x==nil) | ([x string]==nil)){

		[re executeString:@"try(main.help.url())"];            

		[x release];

		x = [re evaluateString:@"try(getOption(\"main.help.url\"))"];

		if((x == nil) | ([x string]==nil)){

			[x release];	

			return;		

		}

	 }

	NSString *url = [x string];

	if(url != nil)

	 	[[HelpView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];

	[helpWindow makeKeyAndOrderFront:self];

	[x release];

}

- (IBAction)showRFAQ:(id)sender

{

	NSString *url = [[NSBundle mainBundle] resourcePath];

	if (!url) {

		REngine *re = [REngine mainEngine];	

		RSEXP *x= [re evaluateString:@"file.path(R.home(),\"RMacOSX-FAQ.html\")"];

		if(x==nil)

			return;

		url = [x string];

		[x release];

		if (url) url = [NSString stringWithFormat:@"file://%@", url];

	} else

		url = [NSString stringWithFormat:@"file://%@/RMacOSX-FAQ.html", url];

	if(url != nil) {

	 	[[HelpView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];

		[helpWindow makeKeyAndOrderFront:self];

	}

}

- (IBAction)whatsNew:(id)sender

{

	 REngine *re = [REngine mainEngine];	

	 RSEXP *x= [re evaluateString:@"file.show(file.path(R.home(),\"NEWS\"))"];

	 if(x==nil)

		return;

	[x release];

}

+ (id) sharedController{

	return sharedHMController;

}

- (IBAction)printDocument:(id)sender

{

	NSPrintInfo *printInfo;

	NSPrintInfo *sharedInfo;

	NSPrintOperation *printOp;

	NSMutableDictionary *printInfoDict;

	NSMutableDictionary *sharedDict;

	sharedInfo = [NSPrintInfo sharedPrintInfo];

	sharedDict = [sharedInfo dictionary];

	printInfoDict = [NSMutableDictionary dictionaryWithDictionary:

		sharedDict];

	printInfo = [[NSPrintInfo alloc] initWithDictionary: printInfoDict];

	[printInfo setHorizontalPagination: NSFitPagination];

	[printInfo setVerticalPagination: NSAutoPagination];

	[printInfo setVerticallyCentered:NO];

	printOp = [NSPrintOperation printOperationWithView:[[[HelpView mainFrame] frameView] documentView] 

											 printInfo:printInfo];

	[printOp setShowPanels:YES];

	[printOp runOperation];

}

- (void) setSearchType:(int) type

{

	if (type==kFuzzyMatch || type==kExactMatch) {

		NSMenu *m = [(NSSearchFieldCell*)searchField searchMenuTemplate];

		searchType = type;

		[[m itemWithTag:kFuzzyMatch] setState:(searchType==kFuzzyMatch)?NSOnState:NSOffState];

		[[m itemWithTag:kExactMatch] setState:(searchType==kExactMatch)?NSOnState:NSOffState];

		[(NSSearchFieldCell*)searchField setSearchMenuTemplate:m];

	}

}

- (void) awakeFromNib

{

	[self setSearchType:kExactMatch];

}

- (IBAction)changeSearchType:(id)sender

{

	[self setSearchType:[sender tag]];

}

- (void)webView:(WebView *)sender didStartProvisionalLoadForFrame:(WebFrame *)frame {

}

- (void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame {

	[back setEnabled: [sender canGoBack]];

	[forward setEnabled: [sender canGoForward]];

}

@end