Source/BSSourceView.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2007 - 2008, Blue Static <http://www.bluestatic.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
   6  * General Public License as published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
  10  * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with this program; if not,
  14  * write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  15  */
  16
  17 #import "BSSourceView.h"
  18
  19 @interface BSSourceView (Private)
  20 - (void)setupViews;
  21 - (void)errorHighlightingFile:(NSNotification *)notif;
  22 @end
  23
  24 @implementation BSSourceView
  25
  26 @synthesize numberView, textView, scrollView, markedLine, delegate, file;
  27
  28 /**
  29  * Initializes the source view with the path of a file
  30  */
  31 - (id)initWithFrame:(NSRect)frame
  32 {
  33         if (self = [super initWithFrame:frame])
  34         {
  35                 [self setupViews];
  36                 [[NSNotificationCenter defaultCenter] addObserver:self
  37                                                                                                  selector:@selector(errorHighlightingFile:)
  38                                                                                                          name:NSFileHandleReadToEndOfFileCompletionNotification
  39                                                                                                    object:nil];
  40         }
  41         return self;
  42 }
  43
  44 /**
  45  * Dealloc
  46  */
  47 - (void)dealloc
  48 {
  49         [file release];
  50
  51         [numberView removeFromSuperview];
  52         [scrollView removeFromSuperview];
  53         [textView removeFromSuperview];
  54
  55         [super dealloc];
  56 }
  57
  58 /**
  59  * Sets the file name as well as the text of the source view
  60  */
  61 - (void)setFile:(NSString *)f
  62 {
  63         if (file != f)
  64         {
  65                 [file release];
  66                 file = [f retain];
  67         }
  68
  69         if (![[NSFileManager defaultManager] fileExistsAtPath:f])
  70         {
  71                 [textView setString:@""];
  72                 return;
  73         }
  74
  75         @try
  76         {
  77                 // Attempt to use the PHP CLI to highlight the source file as HTML
  78                 NSPipe *outPipe = [NSPipe pipe];
  79                 NSPipe *errPipe = [NSPipe pipe];
  80                 NSTask *task = [[NSTask new] autorelease];
  81
  82                 [task setLaunchPath:@"/usr/bin/php"]; // This is the path to the default Leopard PHP executable
  83                 [task setArguments:[NSArray arrayWithObjects:@"-s", f, nil]];
  84                 [task setStandardOutput:outPipe];
  85                 [task setStandardError:errPipe];
  86                 [task launch];
  87
  88                 [[errPipe fileHandleForReading] readToEndOfFileInBackgroundAndNotify];
  89
  90                 NSData *data               = [[outPipe fileHandleForReading] readDataToEndOfFile];
  91                 NSAttributedString *source = [[NSAttributedString alloc] initWithHTML:data documentAttributes:NULL];
  92                 [[textView textStorage] setAttributedString:source];
  93                 [source release];
  94         }
  95         @catch (NSException *exception)
  96         {
  97                 // If the PHP executable is not available then the NSTask will throw an exception
  98                 [textView setString:[NSString stringWithContentsOfFile:f]];
  99         }
 100 }
 101
 102 /**
 103  * If an error occurs in reading the highlighted PHP source, this will merely set the string
 104  */
 105 - (void)errorHighlightingFile:(NSNotification *)notif
 106 {
 107         NSData *data = [[notif userInfo] objectForKey:NSFileHandleNotificationDataItem];
 108         if ([data length] > 0) // there's something on stderr, so the PHP CLI failed
 109                 [textView setString:[NSString stringWithContentsOfFile:file]];
 110 }
 111
 112 /**
 113  * Flip the coordinates
 114  */
 115 - (BOOL)isFlipped
 116 {
 117         return YES;
 118 }
 119
 120 /**
 121  * Tells the text view to scroll to a certain line
 122  */
 123 - (void)scrollToLine:(int)line
 124 {
 125         if (![[NSFileManager defaultManager] fileExistsAtPath:file])
 126                 return;
 127
 128         // go through the document until we find the NSRange for the line we want
 129         int rangeIndex = 0;
 130         for (int i = 0; i < line; i++)
 131         {
 132                 rangeIndex = NSMaxRange([[textView string] lineRangeForRange:NSMakeRange(rangeIndex, 0)]);
 133         }
 134
 135         // now get the true start/end markers for it
 136         unsigned lineStart, lineEnd;
 137         [[textView string] getLineStart:&lineStart end:NULL contentsEnd:&lineEnd forRange:NSMakeRange(rangeIndex - 1, 0)];
 138         [textView scrollRangeToVisible:[[textView string] lineRangeForRange:NSMakeRange(lineStart, lineEnd - lineStart)]];
 139 }
 140
 141 /**
 142  * Setup all the subviews for the source metaview
 143  */
 144 - (void)setupViews
 145 {
 146         int gutterWidth = 30;
 147
 148         // setup the line number view
 149         NSRect numberFrame = [self bounds];
 150         numberFrame.origin = NSMakePoint(0.0, 0.0);
 151         numberFrame.size.width = gutterWidth;
 152         numberView = [[BSLineNumberView alloc] initWithFrame:numberFrame];
 153         [numberView setAutoresizingMask:NSViewHeightSizable];
 154         [numberView setSourceView:self];
 155         [self addSubview:numberView];
 156
 157         // create the scroll view
 158         NSRect scrollFrame = [self bounds];
 159         scrollFrame.origin.x = gutterWidth;
 160         scrollFrame.size.width = scrollFrame.size.width - gutterWidth;
 161         scrollView = [[NSScrollView alloc] initWithFrame:scrollFrame];
 162         [scrollView setHasHorizontalScroller:YES];
 163         [scrollView setHasVerticalScroller:YES];
 164         [scrollView setAutohidesScrollers:YES];
 165         [scrollView setBorderType:NSBezelBorder];
 166         [scrollView setAutoresizingMask:(NSViewWidthSizable | NSViewHeightSizable)];
 167         [[scrollView contentView] setAutoresizesSubviews:YES];
 168         [self addSubview:scrollView];
 169
 170         // add the text view to the scroll view
 171         NSRect textFrame;
 172         textFrame.origin = NSMakePoint(0.0, 0.0);
 173         textFrame.size = [scrollView contentSize];
 174         textView = [[BSSourceViewTextView alloc] initWithFrame:textFrame];
 175         [textView setSourceView:self];
 176         [textView setEditable:NO];
 177         [textView setFont:[NSFont fontWithName:@"Monaco" size:10.0]];
 178         [textView setHorizontallyResizable:YES];
 179         [textView setVerticallyResizable:YES];
 180         [textView setMinSize:textFrame.size];
 181         [textView setMaxSize:NSMakeSize(FLT_MAX, FLT_MAX)];
 182         [[textView textContainer] setContainerSize:NSMakeSize(FLT_MAX, FLT_MAX)];
 183         [[textView textContainer] setWidthTracksTextView:NO];
 184         [[textView textContainer] setHeightTracksTextView:NO];
 185         [textView setAutoresizingMask:NSViewNotSizable];
 186         [scrollView setDocumentView:textView];
 187 }
 188
 189 @end