VuoWindowTextInternal.m

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#import "VuoWindowTextInternal.h"
#import "VuoWindow.h"
#import "VuoApp.h"
 
#include <dispatch/dispatch.h>
 
#include "module.h"
 
#ifdef VUO_COMPILER
VuoModuleMetadata({
                     "title" : "VuoWindowTextInternal",
                     "dependencies" : [
                        "AppKit.framework",
                        "VuoWindow"
                     ]
                 });
#endif
 
 
@implementation VuoWindowTextInternal
 
@synthesize textView;
@synthesize scrollView;
@synthesize textFont;
@synthesize editCopyMenuItem;
@synthesize editSelectAllMenuItem;
 
- (id)init
{
    NSRect frame = NSMakeRect(0, 0, 400, 600);
    NSUInteger styleMask = NSTitledWindowMask | NSMiniaturizableWindowMask | NSResizableWindowMask;
    NSRect contentRect = [NSWindow contentRectForFrameRect:frame styleMask:styleMask];
 
    if (self = [super initWithContentRect:contentRect
                                styleMask:styleMask
                                  backing:NSBackingStoreBuffered
                                    defer:NO])
    {
        triggersEnabled = NO;
        typedLine = NULL;
        typedWord = NULL;
        typedCharacter = NULL;
 
        self.delegate = self;
        self.releasedWhenClosed = NO;
 
        char *title = VuoApp_getName();
        [self setTitle:[NSString stringWithUTF8String:title]];
        free(title);
 
        NSFont *_textFont = [NSFont fontWithName:@"Monaco" size:0];
        self.textFont = _textFont;
 
        NSScrollView *_scrollView = [[NSScrollView alloc] initWithFrame:[[self contentView] frame]];
        self.scrollView = _scrollView;
        [_scrollView release];
        [scrollView setHasVerticalScroller:YES];
        [scrollView setAutohidesScrollers:NO];
        [scrollView setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable];
        [self setContentView:scrollView];
 
        NSTextView *_textView = [[NSTextView alloc] initWithFrame:[[scrollView contentView] frame]];
        self.textView = _textView;
        [_textView release];
        [textView setFont:textFont];
        [textView setEditable:YES];
        [textView setAllowsUndo:NO];
        [textView setAutoresizingMask:NSViewWidthSizable];
        [textView setAutomaticDashSubstitutionEnabled:NO];
        [textView setAutomaticDataDetectionEnabled:NO];
        [textView setAutomaticLinkDetectionEnabled:NO];
        [textView setAutomaticQuoteSubstitutionEnabled:NO];
        [textView setAutomaticSpellingCorrectionEnabled:NO];
        [textView setAutomaticTextReplacementEnabled:NO];
        [scrollView setDocumentView:textView];
 
        // Remove the "Cut" option from the context menu.
        NSMenu *textViewContextMenu = [textView menu];
        int cutItemIndex = [textViewContextMenu indexOfItemWithTitle: @"Cut"];
        if (cutItemIndex >= 0)
            [textViewContextMenu removeItemAtIndex: cutItemIndex];
 
        // Remove the "Paste" option from the context menu.
        int pasteItemIndex = [textViewContextMenu indexOfItemWithTitle: @"Paste"];
        if (pasteItemIndex >= 0)
            [textViewContextMenu removeItemAtIndex: pasteItemIndex];
 
        textView.delegate = self;
    }
    return self;
}
 
- (BOOL)textView:(NSTextView *)aTextView shouldChangeTextInRange:(NSRange)affectedCharRange replacementString:(NSString *)replacementString
{
    // Allow inserting multi-keystroke (e.g. accented) characters.
    NSUInteger markedTextLength = [aTextView markedRange].length;
 
    // Disallow inserting characters anywhere but at the end.
    if (affectedCharRange.location + markedTextLength != [[textView string] length])
        return NO;
 
    if (! triggersEnabled)
        return YES;  
 
    // Don't fire events for partial multi-keystroke characters.
    if ([aTextView hasMarkedText] && markedTextLength == 0)
        return YES;
 
    for (NSUInteger i = 0; i < [replacementString length]; ++i)
    {
        unichar charTyped = [replacementString characterAtIndex:i];
 
        // Fire event for character.
        VuoText charTypedAsText = VuoText_make([[NSString stringWithCharacters:&charTyped length:1] UTF8String]);
        typedCharacter(charTypedAsText);
 
        // If user typed whitespace...
        if ([[NSCharacterSet whitespaceAndNewlineCharacterSet] characterIsMember:charTyped])
        {
            // ... and if it ends a word, then fire event for word.
            NSRange previousWhitespaceOrNewline = [[textView string] rangeOfCharacterFromSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]
                                                                                              options:NSBackwardsSearch];
            NSUInteger previousWordStart = (previousWhitespaceOrNewline.location != NSNotFound ?
                                                                                           previousWhitespaceOrNewline.location + 1 :
                                                                                           0);
            if (previousWordStart < [[textView string] length])
            {
                NSString *wordTyped = [[textView string] substringFromIndex:previousWordStart];
                VuoText wordTypedAsText = VuoText_make([wordTyped UTF8String]);
                typedWord(wordTypedAsText);
            }
        }
 
        // If user typed a newline...
        if ([[NSCharacterSet newlineCharacterSet] characterIsMember:charTyped])
        {
            // ... and if it ends a line, then fire event for line.
            NSRange previousNewline = [[textView string] rangeOfCharacterFromSet:[NSCharacterSet newlineCharacterSet]
                                                                                  options:NSBackwardsSearch];
            NSUInteger previousLineStart = (previousNewline.location != NSNotFound ?
                                                                               previousNewline.location + 1 :
                                                                               0);
            if (previousLineStart < [[textView string] length])
            {
                NSString *lineTyped = [[textView string] substringFromIndex:previousLineStart];
                VuoText lineTypedAsText = VuoText_make([lineTyped UTF8String]);
                typedLine(lineTypedAsText);
            }
        }
    }
 
    return YES;
}
 
- (void)becomeMainWindow
{
    [super becomeMainWindow];
 
    NSMenu *editMenu = [[[NSMenu alloc] initWithTitle:@"Edit"] autorelease];
 
    // "Edit > Copy"
    self.editCopyMenuItem = [[[NSMenuItem alloc] initWithTitle:@"Copy" action:@selector(copyText) keyEquivalent:@"c"] autorelease];
    [self.editCopyMenuItem setKeyEquivalentModifierMask:NSCommandKeyMask];
    [editMenu addItem:self.editCopyMenuItem];
 
    // "Edit > Select All"
    self.editSelectAllMenuItem = [[[NSMenuItem alloc] initWithTitle:@"Select All" action:@selector(selectAllText) keyEquivalent:@"a"] autorelease];
    [self.editSelectAllMenuItem setKeyEquivalentModifierMask:NSCommandKeyMask];
    [editMenu addItem:self.editSelectAllMenuItem];
 
    NSMenuItem *editMenuItem = [[NSMenuItem new] autorelease];
    [editMenuItem setSubmenu:editMenu];
 
    NSMutableArray *windowMenuItems = [NSMutableArray arrayWithCapacity:2];
    [windowMenuItems addObject:editMenuItem];
    oldMenu = [(NSMenu *)VuoApp_setMenuItems(windowMenuItems) retain];
}
 
- (void)resignMainWindow
{
    [super resignMainWindow];
 
    VuoApp_setMenu(oldMenu);
    [oldMenu release];
    oldMenu = nil;
}
 
- (void)windowWillClose:(NSNotification *)notification
{
    [super resignMainWindow];
 
    VuoApp_setMenu(oldMenu);
    [oldMenu release];
    oldMenu = nil;
}
 
- (void)enableTriggersWithTypedLine:(void (*)(VuoText))_typedLine
                          typedWord:(void (*)(VuoText))_typedWord
                     typedCharacter:(void (*)(VuoText))_typedCharacter
{
    triggersEnabled = YES;
    typedLine = _typedLine;
    typedWord = _typedWord;
    typedCharacter = _typedCharacter;
}
 
- (void)disableTriggers
{
    triggersEnabled = NO;
    typedLine = NULL;
    typedWord = NULL;
    typedCharacter = NULL;
}
 
- (void)appendLine:(const char *)text
{
    // Autoscroll the window only if the viewport was already at the end.
    BOOL autoscroll = abs(NSMaxY(textView.visibleRect) - NSMaxY(textView.bounds)) < 1;
 
    NSString *line = [[NSString stringWithUTF8String:text] stringByAppendingString:@"\n"];
    NSDictionary *attributes = @{
        NSFontAttributeName: textFont,
        NSForegroundColorAttributeName: NSColor.textColor,
    };
    NSAttributedString *attributedLine = [[NSAttributedString alloc] initWithString:line attributes:attributes];
    [[textView textStorage] appendAttributedString:attributedLine];
    [attributedLine release];
 
    NSTextContainer *textContainer = [textView textContainer];
    NSLayoutManager *layoutManager = [textView layoutManager];
    [layoutManager ensureLayoutForTextContainer:textContainer];
    NSRect frameToFitText = [layoutManager usedRectForTextContainer:textContainer];
    [textView setFrame:frameToFitText];
 
    if (autoscroll)
        [textView scrollRangeToVisible:NSMakeRange([[textView string] length], 0)];
}
 
- (void)copyText
{
    bool hasSelectedText = ([textView selectedRange].length > 0);
    if (hasSelectedText)
        [self.textView copy:self];
}
 
- (void)selectAllText
{
    [self.textView selectAll:self];
}
 
- (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem
{
    SEL theAction = [anItem action];
    if (theAction == @selector(copyText)) {
 
        bool hasSelectedText = ([textView selectedRange].length > 0);
        return hasSelectedText;
    }
 
    return [super validateUserInterfaceItem:anItem];
}
 
@end