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 "SearchTable.h"
#import "RController.h"
#import <WebKit/WebKit.h>
#import <WebKit/WebFrame.h>
#import "RegexKitLite.h"

static id sharedHSController;

@implementation SearchTable

- (id)init
{
    self = [super init];
    if (self) {
        sharedHSController = self;
        windowTitle = nil;
        dataSource = [[SortableDataSource alloc] init];
    }
    
    return self;
}

- (void) awakeFromNib
{
    [topicsDataSource setTarget: self];
    [topicsDataSource setDataSource: dataSource];
    [TopicHelpView setFrameLoadDelegate:self];
}

- (void)dealloc {
    [super dealloc];
}

- (void) updateHelpSearch: (int) count withTopics: (char**) topics packages: (char**) pkgs descriptions: (char**) descs urls: (char**) urls title: (char*) title
{
    [dataSource reset];
    [dataSource addColumnOfLength:count withUTF8Strings:topics name:@"topic"];
    [dataSource addColumnOfLength:count withUTF8Strings:pkgs name:@"package"];
    [dataSource addColumnOfLength:count withUTF8Strings:descs name:@"description"];
    [dataSource addColumnOfLength:count withUTF8Strings:urls name:@"URL"];
    if (windowTitle) [windowTitle release];
    windowTitle = [[NSString alloc] initWithUTF8String: title];
    [self show];
}

- (int) count
{
    return [dataSource count];
}

- (void) show
{
    [topicsDataSource reloadData];
    [searchTableWindow setTitle:(windowTitle)?windowTitle:NLS(@"<unknown>")];
    [searchTableWindow makeKeyAndOrderFront:self];
    [topicsDataSource deselectAll:nil];
}

#pragma mark -
#pragma mark TableView notifications

- (void)tableViewSelectionDidChange:(NSNotification *)aNotification
{
    // Check our notification object is our table
    if ([aNotification object] != topicsDataSource) return;

    // Update Info delayed
    [NSObject cancelPreviousPerformRequestsWithTarget:self 
                            selector:@selector(showInfo:) 
                            object:topicsDataSource];

    [self performSelector:@selector(showInfo:) withObject:topicsDataSource afterDelay:0.5];
    
}

#pragma mark -

- (IBAction) showInfo:(id)sender
{
    int row = [sender selectedRow];
    if(row < 0) return;
    NSString *urlText = [dataSource objectAtColumn:@"URL" row:row];
    SLog(@"showInfo: URL='%@'", urlText);
    if (![urlText hasPrefix:@"http://"]) {
        NSString *home = [[RController sharedController] home];
        int port = [[RController sharedController] helpServerPort];
        if (port == 0)
            urlText = [NSString stringWithFormat:@"file://%@", urlText];
        else {
            if ([urlText hasPrefix:home]) urlText = [urlText substringFromIndex:[home length]];
            urlText = [NSString stringWithFormat:@"http://127.0.0.1:%d%@", port, urlText];
        }
    }
    SLog(@" - invoking help sub-panel with %@", urlText);
    [[TopicHelpView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlText]]];
}


- (id) window
{
    return searchTableWindow;
}

+ (id) sharedController{
    return sharedHSController;
}

- (void)sheetDidEnd:(id)sheet returnCode:(int)returnCode contextInfo:(NSString *)contextInfo
{
    [searchTableWindow makeKeyAndOrderFront:nil];
}

- (IBAction)executeSelection:(id)sender
{
    DOMRange *dr = [TopicHelpView selectedDOMRange];
    if (dr) { /* we don't do line-exec since we don't get the text outside the selection */
        NSString *stx = [dr markupString];
        // Ok, some simple processing here - it may not work in all cases
        stx = [stx stringByReplacingOccurrencesOfRegex:@"(?i)<br[^>]*?>" withString:@"\n"];
        stx = [stx stringByReplacingOccurrencesOfRegex:@"<[^>]*?>" withString:@""];
        stx = [stx stringByReplacingOccurrencesOfString:@"&lt;" withString:@"<"];
        stx = [stx stringByReplacingOccurrencesOfString:@"&gt;" withString:@">"];
        stx = [stx stringByReplacingOccurrencesOfString:@"&amp;" withString:@"&"];
        [[RController sharedController] sendInput:stx];
    }
}

- (IBAction)printDocument:(id)sender
{

    [NSObject cancelPreviousPerformRequestsWithTarget:self 
                            selector:@selector(showInfo:) 
                            object:topicsDataSource];

    NSPrintInfo *printInfo;
    NSPrintOperation *printOp;
    
    printInfo = [NSPrintInfo sharedPrintInfo];
    [printInfo setHorizontalPagination: NSFitPagination];
    [printInfo setVerticalPagination: NSAutoPagination];
    [printInfo setVerticallyCentered:NO];
    
    printOp = [NSPrintOperation printOperationWithView:[[[TopicHelpView mainFrame] frameView] documentView] 
                                             printInfo:printInfo];
    [printOp setShowPanels:YES];
    [printOp runOperationModalForWindow:[self window] 
                               delegate:self 
                         didRunSelector:@selector(sheetDidEnd:returnCode:contextInfo:) 
                            contextInfo:@""];
}

- (void)supportsWebViewSwipingInHistory
{
    return;
}

- (void)supportsWebViewMagnifying
{
    return;
}

- (WebView*)webView
{
    return TopicHelpView;
}

- (BOOL)validateMenuItem:(NSMenuItem *)menuItem
{
    if ([menuItem action] == @selector(executeSelection:)) {
        return ([TopicHelpView selectedDOMRange] == nil) ? NO : YES;
    }

    return YES;
}

@end