Cocoa mail archive

Getting pointer to NSWindowController

Nirias — Wed, 08 Oct 2008 05:00:29 +0100

I am very new to cocoa and am trying to understand key value coding. I have
a document app wherein the NSDocument creates the NSWindowController which
loads a NIB that contains a NSView inside an NSWindow. The NSWindow
contains the NSView and also a couple of NSTextFields bound to numerical
properties owned by the NSWindowController. I then display current mouse
coordinates by using the following code in the NSView's mouse move handler:

extern NSWindowController *wc;

NSPoint loc = [event locationInWindow];

loc.x -= [self frame].origin.x;

loc.y -= [self frame].origin.y;

[wc setValue:[NSNumber numberWithDouble:(double) loc.y] forKey:@"ypos"
];

[wc setValue:[NSNumber numberWithDouble:(double) loc.x] forKey:@"xpos"];

This works just fine when wc is a global pointer to the NSWindowController,
which I added out of desperation. But the following code, which I tried
first, doesnt work for getting wc:

NSWindow *w = [self window];

NSWindowController *wc = [w windowController];

produces NULL for wc

It seems I must be doing something wrong since the NSWindow class have a
property for NSWIndowController isnt documented to always return NULL. And
it is hard to believe that the architects of cocoa intended to require that
every bit of shared data be defined as global.

Any chance my overall approach is wrong? If so, what would be a more
conventional approach for having events processed by a view result in
updates to a control owned by the same window that owns the view?

Bottombar appearance

HAMILTON, Steven — Wed, 08 Oct 2008 03:18:56 +0100

Hi folks,
The Apple HIG describes bottombars but gives graphical examples that I can't achieve. They are using mainly iCalc as an example.

http://developer.apple.com/documentation/UserExperience/Conceptual/AppleHIGuidelines/XHIGWindows/chapter_18_section_4.html#//apple_ref/doc/uid/20000961-SW6

In iCalc, and iChat and probably many other Apple products the bottom bar and the toolbar has a black indentation line between the bar and the main content view giving a bas relief appearance to the main content. I've got a standard window, textured as per instructions with a Splitview in it (outlineView on left, tableView on right) but I can't get the same appearance. How is this done?

On a related point, why do Apple insist on demanding we implement interface elements that don't appear to be out-of-the-box or aren't adequately described how to be achieved?

Steven Hamilton | Solutions Designer | BT Infrastructure | Business Technology | Suncorp | Tel: 07 3135 4684
steven. | Level 27, Brisbane Square, 266 George Street, Brisbane

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How can I access full source of a WebView

Ömer Karda? — Tue, 07 Oct 2008 22:45:22 +0100

Hi

I am trying to send the contents of a webwiew with email. I have found
several ways to do that, but there are minor problems.

// get the attributes string of the webview
id res = (id )[[[myWebView mainFrame] frameView]
documentView];
NSAttributedString *p = [res attributedString];
NSPasteboard *pb = [NSPasteboard pasteboardWithName:@"PBtoMail"];

// init a private pastebord for data transfer, this time use
webarchive for transfer
[pb declareTypes:[NSArray arrayWithObject:NSRTFDPboardType]
owner:self];

// convert the attributed string to rtfd and place it on the private
pasteboard
NSRange range;
range.location = 0;
range.length = [p length];
[pb setData:(NSData *)[p RTFDFromRange:range documentAttributes:nil
forType:NSRTFDPboardType];

// open mail window using the rtfd data using services...
NSPerformService(@"Mail/Send Selection", pb);

This works, but quality is no so good. So I tried a different approach

// init a private pastebord for data transfer, this time use
webarchive for transfer
NSPasteboard *pb = [NSPasteboard pasteboardWithName:@"PBtoMail"];
[pb declareTypes:[NSArray arrayWithObject:WebArchivePboardType]
owner:self];

// get the webarchive and place it on pboard
[pb setData:[[[myWebView mainFrameDocument] webArchive] data]
forType:WebArchivePboardType];

NSPerformService(@"Mail/Send Selection", pb);

This works better. However external CSS code is not copied, which
makes the page look different. When I select all and copy from the
webview manualy and then paste it on a new mail window it works fine,
the external CSS is copied as well. Is there any way I get the full
source (including the external CSS) so that I can place it on the
pasteboard?

Thanks in advance.

Trouble with NSSplitView

Andre Masse — Tue, 07 Oct 2008 21:41:30 +0100

Hi,

I have set up in IB a window with 3 split views. The main split view
(with a vertical divider) contains 2 splits (horizontal divider):

**************************************
* * 3 *
* 1 ********************************
* * *
* * *
******* 4 *
* * *
* 2 * *
**************************************

I'm using an NSViewController subclass (with an associated nib) for
each of the views. In the - windowDidLoad: method of my
NSWindowController subclass, I set dividers positions and add each
view, resizing it according to the size available in each pane. I'm
testing this interface so all views contain dummy controls:

1- has only buttons
2- has only a Date picker in calendar form
3- has a multiline text view (with scroller) and 2 buttons.
4- has a NSTableView

At launch, everything is good and I've no problem changing the
splitter's position between pane 1 and 2 or with the vertical divider.
Now, if I change the splitter's position between pane 3 and 4 all the
way up or down and back, the header of the NSTableView and the top of
the text view, become hidden (under the divider). I've tried many
combinations of resize/lock for these views in IB, played various
constants with -setAutoresizingMask:. No luck. Either I'm missing the
good one, or I'm in the wrong track. This is driving me nuts, any
advice on getting the good combination?

Thanks,

Andre Masse

Cocoaheads Lake Forest (92630) meeting 10/8/2008 at 7 pm on "Parallel Processing with a ...

Scott Ellsworth — Tue, 07 Oct 2008 21:39:24 +0100

Hello, all,

CocoaHeads Lake Forest will be meeting on the second Wednesday in
October, 10/8, from 7 to 9 PM. We will meet in our usual location at
the Orange County Public Library (El Toro) community room, 24672
Raymond Way, Lake Forest, CA 92630. The A/C has been fixed, and there
is much rejoicing.

James Gregurich will be speaking on parallel processing with a Core Data store.

This will cover some of the basics of Core Data, such as setting up a
simple schema and displaying it in a table view, as well as how to
load data in multiple threads.

Bring your comments, your books, and your bugs, and we will leap right in.

As always, details can be found on the cocoaheads web site at
www.cocoaheads.org.

Thanks go to O'Reilly Media for providing us one of their books as a door prize.

Note: if you receive this directly from me, and no longer wish to,
please reply offlist, and I will pull you from future mailings.

Getting the values from the selected row of a table?

John Velman — Tue, 07 Oct 2008 18:55:21 +0100

I need to get the value of the primary key (shown in the table) of the
selected row of my table, no matter how the table is sorted interactively.

I'm able to get the selected row index, but this seems to give the
"geographic" index of the selected row in the table, as sorted.

So far, I've solved my problem by ensuring that the table source is sorted
by it's primary key, and blocking sorting in the table itself. This is not
too bad for my application (in it's current state, at least), but
eventually I'd like to be able to sort the table interactively and map the
selection back to the original data.

I'm using IB and key value binding, and registering a notification to get
the fact of selection did change.

Thanks,

John Velman

Next Key View doesn't "go to" pushbutton

John Velman — Tue, 07 Oct 2008 18:47:04 +0100

I've got a number of text boxes to be filled in by the user. Tab order
works fine using next key view in IB. After filing the last box, I'd like
the user to be able to tab to a "commit" button, but next key view doesn't
go there, even though the IB heads up boxes and inspector panes show that
it does.

Ideally, tabbing to the Commit button would bring it into focus, light its
focus ring, and the allow the user to press "enter" (or "return" :-). to
commit the data. Then the next key view would recycle to the first in the
sequence of text fields.

Seems that this should be possible to set up in IB, but dogon if I'm
seein' a way to do it (been watching too much campaign TV lately).

Related question: How can I (again in IB) set it so the return key follows
the next key view sequence as well as tab key does?

Neither Hillgass nor Anderson seem to cover these (I admit I read
impatiently and rely on the index a lot), and the Apple documentation (and
various archives) are so extensive I haven't been able to hit exactly the
key words to get to the answers.

Best,

John Velman

File's owner as target of button-action

Andreas Eriksson — Tue, 07 Oct 2008 18:34:21 +0100

I have a nib-file with the File's Owner class set to my own subclass of
NSViewController. The nib-file also contains a custom view with a button whose
target and action is set to a method in File's Owner.

The trouble is that I get EXC_BAD_ACCESS when I click the button and it tries
to call my action method.

I guess I have misunderstood something here. Is there something special about
File's Owner that prevents this from working?

Regards,

Andreas

Re: IKImageView and delegate callback/notification of image

Dave Jewell — Tue, 07 Oct 2008 16:34:37 +0100

> On Tue, 7 Oct 2008 at 09:38:01, Jim Turner said:
>
> Binding to my IKImageView's "image" property nets the following:
>
> [ addObserver:
> forKeyPath:@"image" options:0x7 context:0x1adc3c30] was sent to an
> object that is not KVC-compliant for the "image" property.
>
> Is "image" not the key to which I should be binding?
>

Hi Jim. I've also been fooling around with IKImageView and -- if
nothing else -- I have at least figured out what the delegate does and
what delegate methods get called under what circumstances.

If this is of any interest, let me know.
Dave

Appropriate use of bindings?

Karan, Cem (Civ, ARL/CISD) — Tue, 07 Oct 2008 16:31:10 +0100

I'm having a slight dilemma in deciding which I should use, notifications or bindings. Here is the background:

I have a bunch of C++ code that uses something akin to delegates; you derive from a base class, pass that into an instance of a server class, and the server class calls the delegate at appropriate times. I wanted to cleanly encapsulate all of this in Objective-C, so that the rest of my code can be pure Objective-C, so wrote wrappers for each base class. Now, I pass the internally wrapped C++ instance to the server, while the rest of my code will hook up to Objective-C wrapper.

My dilemma is how to do this hookup; I can use either notifications or bindings, but I can't decide which is better in this situation. Bindings seem to be simpler to use, but reading about them suggests that you are expected to use the MVC design pattern, and I'm not doing MVC here. Notifications are used anywhere you want, but require more (and more careful) work to get right. So, are bindings considered general purpose, or should they really be reserved for MVC situations (even though they can work anywhere)?

Thanks,
Cem Karan