Source/DebuggerWindowController.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2002 - 2007, 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 "DebuggerWindowController.h"
  18 #import "DebuggerConnection.h"
  19 #import "NSXMLElementAdditions.h"
  20
  21 @interface DebuggerWindowController (Private)
  22
  23 - (void)updateSourceViewer;
  24
  25 @end
  26
  27 @implementation DebuggerWindowController
  28
  29 /**
  30  * Initializes the window controller and sets the connection
  31  */
  32 - (id)initWithConnection: (DebuggerConnection *)cnx
  33 {
  34         if (self = [super initWithWindowNibName: @"Debugger"])
  35         {
  36                 _connection = [cnx retain];
  37         }
  38         return self;
  39 }
  40
  41 /**
  42  * Before the display get's comfortable, set up the NSTextView to scroll horizontally
  43  */
  44 - (void)awakeFromNib
  45 {
  46         // set up the scroller for the source viewer
  47         [_sourceViewer setMaxSize: NSMakeSize(FLT_MAX, FLT_MAX)];
  48         [[_sourceViewer textContainer] setContainerSize: NSMakeSize(FLT_MAX, FLT_MAX)];
  49         [[_sourceViewer textContainer] setWidthTracksTextView: NO];
  50         [_sourceViewer setHorizontallyResizable: YES];
  51         [_sourceViewerScroller setHasHorizontalScroller: YES];
  52         [_sourceViewerScroller display];
  53 }
  54
  55 /**
  56  * Release object members
  57  */
  58 - (void)dealloc
  59 {
  60         [_connection release];
  61
  62         [super dealloc];
  63 }
  64
  65 /**
  66  * Sets the status and clears any error message
  67  */
  68 - (void)setStatus: (NSString *)status
  69 {
  70         [_error setHidden: YES];
  71         [_status setStringValue: status];
  72         [[self window] setTitle: [NSString stringWithFormat: @"GDBp @ %@:%d/%@", [_connection remoteHost], [_connection port], [_connection session]]];
  73 }
  74
  75 /**
  76  * Sets the status to be "Error" and then displays the error message
  77  */
  78 - (void)setError: (NSString *)error
  79 {
  80         [_error setStringValue: error];
  81         [self setStatus: @"Error"];
  82         [_error setHidden: NO];
  83 }
  84
  85 /**
  86  * Sets the root node element of the stacktrace
  87  */
  88 - (void)setStack: (NSArray *)stack
  89 {
  90         if (_stack != nil)
  91         {
  92                 [_stack release];
  93         }
  94
  95         _stack = stack;
  96         [_stack retain];
  97         [self updateSourceViewer];
  98 }
  99
 100 /**
 101  * Sets the stack root element so that the NSOutlineView can display it
 102  */
 103 - (void)setRegister: (NSXMLElement *)elm
 104 {
 105         if (_register != nil)
 106         {
 107                 [_register release];
 108         }
 109
 110         _register = elm;
 111         [_register retain];
 112 }
 113
 114 /**
 115  * Forwards the message to run script execution to the connection
 116  */
 117 - (IBAction)run: (id)sender
 118 {
 119         [_connection run];
 120 }
 121
 122 /**
 123  * Forwards the message to "step in" to the connection
 124  */
 125 - (IBAction)stepIn: (id)sender
 126 {
 127         [_connection stepIn];
 128 }
 129
 130 /**
 131 * Forwards the message to "step out" to the connection
 132  */
 133 - (IBAction)stepOut: (id)sender
 134 {
 135         [_connection stepOut];
 136 }
 137
 138 /**
 139 * Forwards the message to "step over" to the connection
 140  */
 141 - (IBAction)stepOver: (id)sender
 142 {
 143         [_connection stepOver];
 144 }
 145
 146 /**
 147  * NSTableView delegate method that informs the controller that the stack selection did change and that
 148  * we should update the source viewer
 149  */
 150 - (void)tableViewSelectionDidChange: (NSNotification *)notif
 151 {
 152         NSLog(@"selection changed");
 153         [self updateSourceViewer];
 154 }
 155 /**
 156  * Does the actual updating of the source viewer by reading in the file
 157  */
 158 - (void)updateSourceViewer
 159 {
 160         int selection = [_stackController selectionIndex];
 161         if (selection == NSNotFound)
 162         {
 163                 [_sourceViewer setString: @""];
 164                 return;
 165         }
 166
 167         // get the filename and then set the text
 168         NSString *filename = [[_stack objectAtIndex: selection] valueForKey: @"filename"];
 169         filename = [[NSURL URLWithString: filename] path];
 170         NSString *text = [NSString stringWithContentsOfFile: filename];
 171         [_sourceViewer setString: text];
 172
 173         // go through the document until we find the NSRange for the line we want
 174         int destination = [[[_stack objectAtIndex: selection] valueForKey: @"lineno"] intValue];
 175         int rangeIndex = 0;
 176         for (int line = 0; line < destination; line++)
 177         {
 178                 rangeIndex = NSMaxRange([text lineRangeForRange: NSMakeRange(rangeIndex, 0)]);
 179         }
 180
 181         // now get the true start/end markers for it
 182         unsigned lineStart, lineEnd;
 183         [text getLineStart: &lineStart end: NULL contentsEnd: &lineEnd forRange: NSMakeRange(rangeIndex - 1, 0)];
 184         NSRange lineRange = NSMakeRange(lineStart, lineEnd - lineStart);
 185
 186         // colorize it so the user knows which line we're on in the stack
 187         [[_sourceViewer textStorage] setAttributes: [NSDictionary dictionaryWithObjects: [NSArray arrayWithObjects: [NSColor redColor], [NSColor yellowColor], nil]
 188                                                                                                                                                          forKeys: [NSArray arrayWithObjects: NSForegroundColorAttributeName, NSBackgroundColorAttributeName, nil]]
 189                                                                                  range: lineRange];
 190         [_sourceViewer scrollRangeToVisible: [text lineRangeForRange: NSMakeRange(lineStart, lineEnd - lineStart)]];
 191
 192         // make sure the font stays Monaco
 193         [_sourceViewer setFont: [NSFont fontWithName: @"Monaco" size: 10.0]];
 194 }
 195
 196 /**
 197  * Called whenver an item is expanded. This allows us to determine if we need to fetch deeper
 198  */
 199 - (void)outlineViewItemDidExpand: (NSNotification *)notif
 200 {
 201         // XXX: This very well may break because NSTreeController sends us a _NSArrayControllerTreeNode object
 202         //              which is presumably private, and thus this is not a reliable method for getting the object. But
 203         //              we damn well need it, so f!ck the rules and we're using it.
 204         NSXMLElement *obj = [[[notif userInfo] objectForKey: @"NSObject"] observedObject];
 205
 206         // hmm... we're not a leaf but have no children. this must be beyond our depth, so go make us
 207         // deeper
 208         if (![obj isLeaf] && [[obj children] count] < 1)
 209         {
 210                 // count upwards to see how deep we should go
 211                 int depth = 0;
 212                 NSXMLElement *elm = obj;
 213                 while (elm != nil)
 214                 {
 215                         depth++;
 216                         elm = (NSXMLElement *)[elm parent];
 217                 }
 218                 NSLog(@"let's go to depth %d for %@", depth, obj);
 219         }
 220 }
 221
 222 @end