Problems faced while customizing NSTextFieldCell - cocoa

Question

I am trying to make cells in an outline view just like we have for users in Skype's message window.
For this I created a custom class:
IconNameCell.h
#interface IconNameCell : NSTextFieldCell {
//#private
NSImage *userImage; // size (17,17)
NSImage *statusIcon; // size (14,14)
NSString *cellText;
}
#property (readwrite, retain) NSImage *userImage;
#property (readwrite, retain) NSImage *statusIcon;
#property (readwrite, retain) NSString *cellText;
- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView;
#end
IconNameCell.m
#implementation IconNameCell
#synthesize userImage;
#synthesize statusIcon;
#synthesize cellText;
- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView{
#try{
// Inset the cell frame to give everything a little horizontal padding
NSRect anInsetRect = NSInsetRect(cellFrame,2.0,0);
//FIXME: flip coordinates and size can be set in accessor methods
// setting userImage and statusIcon in flipped coordinate
[userImage setFlipped:YES];
[statusIcon setFlipped:YES];
// setting size of image and icon
[userImage setSize:NSMakeSize(25.0, 25.0)];
[statusIcon setSize:NSMakeSize(15.0, 17.0)];
// setting attributes of cell text
NSMutableParagraphStyle *dParagraphStyle = [[NSMutableParagraphStyle alloc] init];
[dParagraphStyle setAlignment:NSLeftTextAlignment];
NSColor *colorOfText;
if ([self isHighlighted]) {
colorOfText = [NSColor whiteColor];
}
else {
colorOfText = [NSColor blackColor];
}
NSMutableDictionary * dTitleAttributes = [[NSMutableDictionary alloc] initWithObjectsAndKeys:
colorOfText,NSForegroundColorAttributeName,
[NSFont systemFontOfSize:11.0],NSFontAttributeName,
dParagraphStyle, NSParagraphStyleAttributeName,
nil];
// getting sizes
NSSize cellTextSize = [cellText sizeWithAttributes:dTitleAttributes];
NSSize userImageSize = [userImage size];
NSSize statusIconSize = [statusIcon size];
// making layout boxes for all elements
// vertical padding between the lines of text
float dVerticalPadding = 2.0;
// horizontal padding between two images
float padBtwnImgs = 4.0;
// horizontal padding between image and text
float padBtwnImgText = 6.0;
NSString *userImageName = [userImage name];
NSLog(#"userImageName - %# / cellText- %#",userImageName,cellText); // getting null for userImageName
//if ([userImageName isEqualToString:#"current_D.png"]) {
//FIXME: this is juggad and should be corrected
NSRange rangeOfComma = [cellText rangeOfString:#","];
if (rangeOfComma.length !=0 ) {
//<#statements#>
// userImage box: center the userImage vertically inside of the inset rect
NSRect cellTitleBox = NSMakeRect(anInsetRect.origin.x,
anInsetRect.origin.y + anInsetRect.size.height*.5 - cellTextSize.height*.5,
cellTextSize.width,
cellTextSize.height);
// drawing cell text
[cellText drawInRect:cellTitleBox withAttributes:dTitleAttributes];
}
else {
// userImage box: center the userImage vertically inside of the inset rect
NSRect userImageBox = NSMakeRect(anInsetRect.origin.x,
anInsetRect.origin.y + anInsetRect.size.height*.5 - userImageSize.height*.5,
userImageSize.width,
userImageSize.height);
// statusIcon box: center the statusIcon vertically inside of the inset rect
NSRect statusIconBox = NSMakeRect(userImageBox.origin.x + userImageBox.size.width + padBtwnImgs,
anInsetRect.origin.y + anInsetRect.size.height*.5 - statusIconSize.height*.5,
statusIconSize.width,
statusIconSize.height);
// cellTitleBox: vertically aligning text
NSRect cellTitleBox = NSMakeRect(statusIconBox.origin.x + statusIconBox.size.width + padBtwnImgText,
anInsetRect.origin.y + anInsetRect.size.height*.5 - cellTextSize.height*.5,
cellTextSize.width,
cellTextSize.height);
// drawing user image
[userImage drawInRect:userImageBox fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
// drawing user status
[statusIcon drawInRect:statusIconBox fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
// drawing cell text
[cellText drawInRect:cellTitleBox withAttributes:dTitleAttributes];
}
}
#catch (NSException *e) {
NSLog(#"IconNameCell -%#",e);
}
}
#end
2nd, I assigned text field cell for outline view the class: IconNameCell in IB
3rd, I used this code in delegate to set image, icon and name of user in custom cell-
- (void)outlineView:(NSOutlineView *)outlineView willDisplayCell:(id)cell forTableColumn:(NSTableColumn *)tableColumn item:(id)item{
if ([[tableColumn identifier] isEqualToString:#"userInfo"]) {
// some relevant code
if( [[item onlineStatus] intValue] == 0 ){
[cell setStatusIcon:[NSImage imageNamed:#"offline.png"]];
}
else{
[cell setStatusIcon:[NSImage imageNamed:#"online.png"]];
}
//similarly, setting attribute for userImage and cellText
}
I am facing two problems with it: 1. Application is frequently crashing when I am selecting one or the other row in outline view. Earlier when I had not taken the customized cell but three different columns for - user image, user status and user name it was working fine! 2. For the log: NSLog(#"userImageName - %# / cellText- %#",userImageName,cellText); I am getting (null) as userImageName, although I should get some string value for it.
Can anyone suggest me some solution for it??
Thanks,
Miraaj

Answer 1

Application is frequently crashing when I am selecting one or the other row in outline view.
Please edit your question to include the crash log.
2. For the log: NSLog(#"userImageName - %# / cellText- %#",userImageName,cellText); I am getting (null) as userImageName, although I should get some string value for it.
Have you set the image's name with setName: or obtained it from imageNamed:? Otherwise, it doesn't have one, and this output is correct.