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Annotation of Examples/AppKit/BusyBox/BusyBoxApp.m, revision 1.1

1.1     ! root        1: /*
        !             2:  * This subclass only adds a few responsibilities to the Application 
        !             3:  * class. It loads the info and preferences panels on demand, 
        !             4:  * and overrides sendEvent: to watch for control-mouseDown events
        !             5:  * which it vectors off to the help object.
        !             6:  *
        !             7:  * Author: Julie Zelenski, NeXT Developer Support
        !             8:  * You may freely copy, distribute and reuse the code in this example.  
        !             9:  * NeXT disclaims any warranty of any kind, expressed or implied, as to 
        !            10:  * its fitness for any particular use.
        !            11:  */
        !            12: 
        !            13: #import <appkit/appkit.h>
        !            14: #import "BusyBoxApp.h"
        !            15: #import "Help.h"
        !            16: #import <strings.h>
        !            17: #import <libc.h>               // for chdir, getwd
        !            18: 
        !            19: 
        !            20: @implementation BusyBoxApp
        !            21: 
        !            22: /* TARGET/ACTION METHODS */
        !            23: 
        !            24: - info:sender
        !            25: /*
        !            26:  * The info panel is a separate nib module and only loaded on demand.
        !            27:  */
        !            28: {
        !            29:     if (!infoPanel) {
        !            30:        if (![self loadNibSection:"InfoPanel.nib" owner:self withNames:NO]) {
        !            31:            NXLogError ("Could not load InfoPanel.nib");
        !            32:        }
        !            33:     }
        !            34:     [infoPanel makeKeyAndOrderFront:self];
        !            35:     return self;
        !            36: }
        !            37: 
        !            38: - preferences:sender
        !            39: /*
        !            40:  * The preferences panel is a separate nib module and only loaded on demand.
        !            41:  */
        !            42: {
        !            43:     if (!prefPanel) {
        !            44:        if (![self loadNibSection:"PrefPanel.nib" owner:self withNames:NO]) {
        !            45:            NXLogError ("Could not load PrefPanel.nib");
        !            46:        }
        !            47:     }
        !            48:     [prefPanel makeKeyAndOrderFront:self];
        !            49:     return self;
        !            50: }
        !            51: 
        !            52: 
        !            53: 
        !            54: - appDidInit:sender;
        !            55: /* Upon starting, app asks Help object to bring up help panel and display the
        !            56:  * general help information.
        !            57:  */
        !            58: {
        !            59:     [helpObject generalHelp:self];
        !            60:     return self;
        !            61: }
        !            62: 
        !            63: - sendEvent:(NXEvent *)event;
        !            64: /* I override sendEvent: so that I can snarf control-mouseDown events.
        !            65:  * When the user holds Control key down and clicks on something, this
        !            66:  * method will figure out which window received the click, finds the
        !            67:  * view which is directly under the mouse down, and passes that information
        !            68:  * to the help object who will display the appropriate help file.  If this
        !            69:  * isn't a control-mouseDown event, I just call the super Application 
        !            70:  * sendEvent: method to handle the event normally.
        !            71:  */
        !            72:  {    
        !            73:     id window,view;
        !            74: 
        !            75:     if ((event->type == NX_LMOUSEDOWN) && (event->flags & NX_CONTROLMASK)) {
        !            76:         window = [self findWindow:event->window];
        !            77:        view = [[window contentView] hitTest:&event->location];
        !            78:        if (view) [helpObject helpForView:view atPoint:&event->location];
        !            79:        else [helpObject helpForWindow:window];
        !            80:     }
        !            81:     else [super sendEvent:event];
        !            82:     return self;
        !            83: }
        !            84: 
        !            85: @end

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