gistfile1.j

// ContextualMenuTableView.j Created by mason on 2010/07/26. This source code is in the public domain.

// NOTES: This subclass adds simple right-click contextual menu support to CPTableView. 

// It does not work with Cappuccino 0.8.1, but it works with the latest master branch as of 
// 2010-07-27. To use it, just have your table's delegate implement -tableView:contextualMenuForRows:. 

// The table view handles updating the selection before invoking the delegate method. This doesn't 
// support the cool modern Mac OS X 10.6 style of contextual menus that don't destructively change 
// the user selection (discussed by me in this thread:  http://groups.google.com/group/objectivej/browse_thread/thread/129dca07459d9325 ),
// because that is not easily done with CPTableView as it currently exists.  So if you right click 
// inside the selected rows, you get a context menu for the selected rows. If you right click 
// outside of the selected rows, the current selection is discarded, the right-clicked row is 
// selected, and you get a contextual menu for just that row. However, someday I hope to support 
// that more sophisticated style of contextual menu, which is why the delegate method has the 
// affectedRows parameter. (Currently affectedRows is always the same as the table's -selectedRowIndexes.)

// I don't think it is yet known exactly how Cappuccino's CPTableView will eventually implement 
// support for contextual menus.

@import <AppKit/CPTableView.j>

@implementation ContextualMenuTableView : CPTableView
{
}

- (void)rightMouseDown:(CPEvent)anEvent
{    
    var mouseDownPoint = [self convertPoint:[anEvent locationInWindow] fromView:nil];
    var clickedRow = [self rowAtPoint:mouseDownPoint];
    var selectedRows = [self selectedRowIndexes];
    
    var affectedRows = [CPIndexSet indexSetWithIndex:clickedRow];
    if ([selectedRows containsIndex:clickedRow])
    {
        affectedRows = selectedRows;
    }
    
    var contextualMenu = [self tableView:self contextualMenuForRows:affectedRows];
    if (contextualMenu)
    {
        [self selectRowIndexes:affectedRows byExtendingSelection:NO];
        [CPMenu popUpContextMenu:contextualMenu withEvent:anEvent forView:self];
    }
    else
    {
        [super rightMouseDown:anEvent];
    }
}

- (CPMenu)tableView:(CPTableView)aTableView contextualMenuForRows:(CPIndexSet)affectedRows
{
    var del = [self delegate];
    if ([del respondsToSelector:@selector(tableView:contextualMenuForRows:)])
    {
        return [del tableView:self contextualMenuForRows:affectedRows];
    }

    var testMenu = [[CPMenu alloc] initWithTitle:@"test context menu"];
    [testMenu addItemWithTitle:@"contextual menus" action:nil keyEquivalent:@""];
    [testMenu addItemWithTitle:@"are not yet" action:nil keyEquivalent:@""];
    [testMenu addItemWithTitle:@"implemented! wh00!" action:nil keyEquivalent:@""];
    [testMenu addItemWithTitle:@" \\(^_^)/" action:nil keyEquivalent:@""];
    return testMenu;
}

@end