The R Project SVN R-packages

/*
 *  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
{
    if (!file) return;
    if (!topic) topic=@"<unknown>";
    NSString *url = [NSString stringWithFormat:@"file://%@",file];
    SLog(@"HelpManager.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;
    if (!topic) return; /* should we issue an error? This happens only if the encoding is wrong */
    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