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- /*
- File: HelloController.m
-
- Description: This is the implementation file for the class that handles the interaction between the GUI
- and the Hello objects, allowing you to switch messages and receiver objects. Calling Help
- Viewer to display our help file is also handled here.
-
- Author: MCF
-
- Copyright: © Copyright 2000 Apple Computer, Inc. All rights reserved.
-
- Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
- ("Apple") in consideration of your agreement to the following terms, and your
- use, installation, modification or redistribution of this Apple software
- constitutes acceptance of these terms. If you do not agree with these terms,
- please do not use, install, modify or redistribute this Apple software.
-
- In consideration of your agreement to abide by the following terms, and subject
- to these terms, Apple grants you a personal, non-exclusive license, under Apple’s
- copyrights in this original Apple software (the "Apple Software"), to use,
- reproduce, modify and redistribute the Apple Software, with or without
- modifications, in source and/or binary forms; provided that if you redistribute
- the Apple Software in its entirety and without modifications, you must retain
- this notice and the following text and disclaimers in all such redistributions of
- the Apple Software. Neither the name, trademarks, service marks or logos of
- Apple Computer, Inc. may be used to endorse or promote products derived from the
- Apple Software without specific prior written permission from Apple. Except as
- expressly stated in this notice, no other rights or licenses, express or implied,
- are granted by Apple herein, including but not limited to any patent rights that
- may be infringed by your derivative works or by other works in which the Apple
- Software may be incorporated.
-
- The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
- WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
- WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
- COMBINATION WITH YOUR PRODUCTS.
-
- IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
- OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
- (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
- ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- Change History (most recent first):
-
- 09/2000 - MCF - initial version
-
- */
-
- //we use #import to make sure the header is only read in once
- #import "HelloController.h"
-
- @implementation HelloController
-
- //This method is called when the user picks a different message
- //to display by clicking a different radio button
- - (IBAction)switchMessage:(id)sender
- {
- //sender is the NSMatrix containing the radio buttons.
- //We ask the sender for which row (radio button) is selected and add one
- //to compensate for counting from zero.
- int which=[sender selectedRow]+1;
- //We now set our NSButton's action to be the message corresponding to the radio button selection.
- //+[NSString stringWithFormat:...] is used to concatenate "message" and the message number.
- //NSSelectorFromString converts the message name string to an actual message structure that
- //Objective-C can use.
- [helloButton setAction:NSSelectorFromString([NSString stringWithFormat:@"%@%d:",@"message",which])];
- }
-
- //This method is called when the user picks a different object to
- //receive messages using the PopUp menu
- - (IBAction)switchObject:(id)sender
- {
- //sender is the NSPopUpMenu containing Hello object choices.
- //We ask the sender for which menu item is selected and add one
- //to compensate for counting from zero.
- int which=[sender indexOfSelectedItem]+1;
-
- //Based on which menu item is selected, we set the target (the receiving object)
- //of the helloButton to point to either hello1 or hello2.
- if (which==1)
- [helloButton setTarget:hello1];
- else
- [helloButton setTarget:hello2];
- }
-
- //awakeFromNib is called when this object is done being unpacked from the nib file;
- //at this point, we can do any needed initialization before turning app control over to the user
- - (void)awakeFromNib
- {
- //Bring the window to the front and make it the receiving window for key events
- [[helloButton window] makeKeyAndOrderFront:self];
- }
-
- //This method is called when the user selects "HelloCocoa Help" from the Help menu
- - (IBAction)showHelp:(id)sender
- {
- //We call -[NSWorkspace openFile:withApplication:] to open our html file with the Help Viewer,
- //using -[NSBundle pathForResource:ofType:] to help us find our html file
- NSString *path = [[NSBundle mainBundle] pathForResource:@"ReadMe" ofType:@"html"];
- if (path) {
- [[NSWorkspace sharedWorkspace] openFile:path withApplication:@"Help Viewer"];
- }
- }
-
- @end
-