Alexandre Lision | 83180df | 2016-01-18 11:32:20 -0500 | [diff] [blame] | 1 | // |
| 2 | // INDSequentialTextSelectionManager.m |
| 3 | // INDSequentialTextSelectionManager |
| 4 | // |
| 5 | // Created by Indragie Karunaratne on 2014-03-02. |
| 6 | // Copyright (c) 2014 Indragie Karunaratne. All rights reserved. |
| 7 | // |
| 8 | |
| 9 | #import "INDSequentialTextSelectionManager.h" |
| 10 | #import <objc/runtime.h> |
| 11 | |
| 12 | static NSUInteger INDCharacterIndexForTextViewEvent(NSEvent *event, NSTextView *textView) |
| 13 | { |
| 14 | NSView *contentView = event.window.contentView; |
| 15 | NSPoint point = [contentView convertPoint:event.locationInWindow fromView:nil]; |
| 16 | NSPoint textPoint = [textView convertPoint:point fromView:contentView]; |
| 17 | return [textView characterIndexForInsertionAtPoint:textPoint]; |
| 18 | } |
| 19 | |
| 20 | static NSRange INDForwardRangeForIndices(NSUInteger idx1, NSUInteger idx2) { |
| 21 | NSRange range; |
| 22 | if (idx2 >= idx1) { |
| 23 | range = NSMakeRange(idx1, idx2 - idx1); |
| 24 | } else if (idx2 < idx1) { |
| 25 | range = NSMakeRange(idx2, idx1 - idx2); |
| 26 | } else { |
| 27 | range = NSMakeRange(NSNotFound, 0); |
| 28 | } |
| 29 | return range; |
| 30 | } |
| 31 | |
| 32 | static void * INDUniqueIdentifierKey = &INDUniqueIdentifierKey; |
| 33 | |
| 34 | @interface NSTextView (INDUniqueIdentifiers) |
| 35 | @property (nonatomic, copy) NSString *ind_uniqueIdentifier; |
| 36 | @end |
| 37 | |
| 38 | @implementation NSTextView (INDUniqueIdentifiers) |
| 39 | |
| 40 | - (void)setInd_uniqueIdentifier:(NSString *)ind_uniqueIdentifier |
| 41 | { |
| 42 | objc_setAssociatedObject(self, INDUniqueIdentifierKey, ind_uniqueIdentifier, OBJC_ASSOCIATION_COPY_NONATOMIC); |
| 43 | } |
| 44 | |
| 45 | - (NSString *)ind_uniqueIdentifier |
| 46 | { |
| 47 | return objc_getAssociatedObject(self, INDUniqueIdentifierKey); |
| 48 | } |
| 49 | |
| 50 | @end |
| 51 | |
| 52 | @interface INDAttributeRange : NSObject |
| 53 | @property (nonatomic, copy, readonly) NSString *attribute; |
| 54 | @property (nonatomic, strong, readonly) id value; |
| 55 | @property (nonatomic, assign, readonly) NSRange range; |
| 56 | - (id)initWithAttribute:(NSString *)attribute value:(id)value range:(NSRange)range; |
| 57 | @end |
| 58 | |
| 59 | @implementation INDAttributeRange |
| 60 | |
| 61 | - (id)initWithAttribute:(NSString *)attribute value:(id)value range:(NSRange)range |
| 62 | { |
| 63 | if ((self = [super init])) { |
| 64 | _attribute = [attribute copy]; |
| 65 | _value = value; |
| 66 | _range = range; |
| 67 | } |
| 68 | return self; |
| 69 | } |
| 70 | |
| 71 | @end |
| 72 | |
| 73 | static void * INDBackgroundColorRangesKey = &INDBackgroundColorRangesKey; |
| 74 | static void * INDHighlightedRangeKey = &INDHighlightedRangeKey; |
| 75 | |
| 76 | #define IND_DISABLED_SELECTED_TEXT_BG_COLOR [NSColor colorWithDeviceRed:0.83 green:0.83 blue:0.83 alpha:1.0] |
| 77 | |
| 78 | @interface NSTextView (INDSelectionHighlight) |
| 79 | @property (nonatomic, strong) NSArray *ind_backgroundColorRanges; |
| 80 | @property (nonatomic, assign) NSRange ind_highlightedRange; |
| 81 | @end |
| 82 | |
| 83 | @implementation NSTextView (INDSelectionHighlight) |
| 84 | |
| 85 | - (void)ind_highlightSelectedTextInRange:(NSRange)range drawActive:(BOOL)active |
| 86 | { |
| 87 | if (self.ind_backgroundColorRanges == nil) { |
| 88 | [self ind_backupBackgroundColorState]; |
| 89 | } |
| 90 | self.ind_highlightedRange = range; |
| 91 | |
| 92 | NSColor *selectedColor = nil; |
| 93 | if (active) { |
| 94 | selectedColor = self.selectedTextAttributes[NSBackgroundColorAttributeName] ?: NSColor.selectedTextBackgroundColor; |
| 95 | } else { |
| 96 | selectedColor = IND_DISABLED_SELECTED_TEXT_BG_COLOR; |
| 97 | } |
| 98 | [self.textStorage beginEditing]; |
| 99 | [self.textStorage removeAttribute:NSBackgroundColorAttributeName range:NSMakeRange(0, self.textStorage.length)]; |
| 100 | [self.textStorage addAttribute:NSBackgroundColorAttributeName value:selectedColor range:range]; |
| 101 | [self.textStorage endEditing]; |
| 102 | [self setNeedsDisplay:YES]; |
| 103 | } |
| 104 | |
| 105 | - (void)ind_backupBackgroundColorState |
| 106 | { |
| 107 | NSMutableArray *ranges = [NSMutableArray array]; |
| 108 | NSString *attribute = NSBackgroundColorAttributeName; |
| 109 | [self.textStorage enumerateAttribute:attribute inRange:NSMakeRange(0, self.textStorage.length) options:0 usingBlock:^(id value, NSRange range, BOOL *stop) { |
| 110 | if (value == nil) return; |
| 111 | INDAttributeRange *attrRange = [[INDAttributeRange alloc] initWithAttribute:attribute value:value range:range]; |
| 112 | [ranges addObject:attrRange]; |
| 113 | }]; |
| 114 | self.ind_backgroundColorRanges = ranges; |
| 115 | } |
| 116 | |
| 117 | - (void)ind_deselectHighlightedText |
| 118 | { |
| 119 | [self.textStorage beginEditing]; |
| 120 | [self.textStorage removeAttribute:NSBackgroundColorAttributeName range:NSMakeRange(0, self.string.length)]; |
| 121 | NSArray *ranges = self.ind_backgroundColorRanges; |
| 122 | for (INDAttributeRange *range in ranges) { |
| 123 | [self.textStorage addAttribute:range.attribute value:range.value range:range.range]; |
| 124 | } |
| 125 | [self.textStorage endEditing]; |
| 126 | [self setNeedsDisplay:YES]; |
| 127 | |
| 128 | self.ind_backgroundColorRanges = nil; |
| 129 | self.ind_highlightedRange = NSMakeRange(0, 0); |
| 130 | } |
| 131 | |
| 132 | - (void)setInd_backgroundColorRanges:(NSArray *)ind_backgroundColorRanges |
| 133 | { |
| 134 | objc_setAssociatedObject(self, INDBackgroundColorRangesKey, ind_backgroundColorRanges, OBJC_ASSOCIATION_RETAIN_NONATOMIC); |
| 135 | } |
| 136 | |
| 137 | - (NSArray *)ind_backgroundColorRanges |
| 138 | { |
| 139 | return objc_getAssociatedObject(self, INDBackgroundColorRangesKey); |
| 140 | } |
| 141 | |
| 142 | - (void)setInd_highlightedRange:(NSRange)ind_highlightedRange |
| 143 | { |
| 144 | objc_setAssociatedObject(self, INDHighlightedRangeKey, [NSValue valueWithRange:ind_highlightedRange], OBJC_ASSOCIATION_RETAIN_NONATOMIC); |
| 145 | } |
| 146 | |
| 147 | - (NSRange)ind_highlightedRange |
| 148 | { |
| 149 | return [objc_getAssociatedObject(self, INDHighlightedRangeKey) rangeValue]; |
| 150 | } |
| 151 | |
| 152 | @end |
| 153 | |
| 154 | @interface INDTextViewSelectionRange : NSObject |
| 155 | @property (nonatomic, copy, readonly) NSString *textViewIdentifier; |
| 156 | @property (nonatomic, assign, readonly) NSRange range; |
| 157 | @property (nonatomic, copy, readonly) NSAttributedString *attributedText; |
| 158 | - (id)initWithTextView:(NSTextView *)textView selectedRange:(NSRange)range; |
| 159 | @end |
| 160 | |
| 161 | @implementation INDTextViewSelectionRange |
| 162 | |
| 163 | - (id)initWithTextView:(NSTextView *)textView selectedRange:(NSRange)range |
| 164 | { |
| 165 | if ((self = [super init])) { |
| 166 | _textViewIdentifier = [textView.ind_uniqueIdentifier copy]; |
| 167 | _range = range; |
| 168 | _attributedText = [[textView.attributedString attributedSubstringFromRange:range] copy]; |
| 169 | } |
| 170 | return self; |
| 171 | } |
| 172 | |
| 173 | @end |
| 174 | |
| 175 | @interface INDTextViewSelectionSession : NSObject |
| 176 | @property (nonatomic, copy, readonly) NSString *textViewIdentifier; |
| 177 | @property (nonatomic, assign, readonly) NSUInteger characterIndex; |
| 178 | @property (nonatomic, strong, readonly) NSDictionary *selectionRanges; |
| 179 | @property (nonatomic, assign) NSPoint windowPoint; |
| 180 | - (void)addSelectionRange:(INDTextViewSelectionRange *)range; |
| 181 | - (void)removeSelectionRangeForTextView:(NSTextView *)textView; |
| 182 | @end |
| 183 | |
| 184 | @implementation INDTextViewSelectionSession { |
| 185 | NSMutableDictionary *_selectionRanges; |
| 186 | } |
| 187 | @synthesize selectionRanges = _selectionRanges; |
| 188 | |
| 189 | - (id)initWithTextView:(NSTextView *)textView event:(NSEvent *)event |
| 190 | { |
| 191 | if ((self = [super init])) { |
| 192 | _textViewIdentifier = [textView.ind_uniqueIdentifier copy]; |
| 193 | _characterIndex = INDCharacterIndexForTextViewEvent(event, textView); |
| 194 | _selectionRanges = [NSMutableDictionary dictionary]; |
| 195 | _windowPoint = event.locationInWindow; |
| 196 | } |
| 197 | return self; |
| 198 | } |
| 199 | |
| 200 | - (void)addSelectionRange:(INDTextViewSelectionRange *)range |
| 201 | { |
| 202 | NSParameterAssert(range.textViewIdentifier); |
| 203 | _selectionRanges[range.textViewIdentifier] = range; |
| 204 | } |
| 205 | |
| 206 | - (void)removeSelectionRangeForTextView:(NSTextView *)textView |
| 207 | { |
| 208 | NSParameterAssert(textView.ind_uniqueIdentifier); |
| 209 | [_selectionRanges removeObjectForKey:textView.ind_uniqueIdentifier]; |
| 210 | } |
| 211 | |
| 212 | @end |
| 213 | |
| 214 | @interface INDTextViewMetadata : NSObject |
| 215 | @property (nonatomic, strong, readonly) NSTextView *textView; |
| 216 | @property (nonatomic, copy, readonly) INDAttributedTextTransformationBlock transformationBlock; |
| 217 | - (id)initWithTextView:(NSTextView *)textView transformationBlock:(INDAttributedTextTransformationBlock)transformationBlock; |
| 218 | @end |
| 219 | |
| 220 | @implementation INDTextViewMetadata |
| 221 | |
| 222 | - (id)initWithTextView:(NSTextView *)textView transformationBlock:(INDAttributedTextTransformationBlock)transformationBlock |
| 223 | { |
| 224 | if ((self = [super init])) { |
| 225 | _textView = textView; |
| 226 | _transformationBlock = [transformationBlock copy]; |
| 227 | } |
| 228 | return self; |
| 229 | } |
| 230 | |
| 231 | @end |
| 232 | |
| 233 | @interface INDSequentialTextSelectionManager () |
| 234 | @property (nonatomic, strong, readonly) NSMutableDictionary *textViews; |
| 235 | @property (nonatomic, strong, readonly) NSMutableOrderedSet *sortedTextViews; |
| 236 | @property (nonatomic, strong) INDTextViewSelectionSession *currentSession; |
| 237 | @property (nonatomic, strong) NSAttributedString *cachedAttributedText; |
| 238 | @property (nonatomic, strong) id eventMonitor; |
| 239 | @property (nonatomic, assign, getter = isFirstResponder) BOOL firstResponder; |
| 240 | @end |
| 241 | |
| 242 | @implementation INDSequentialTextSelectionManager |
| 243 | |
| 244 | #pragma mark - Iniialization |
| 245 | |
| 246 | - (id)init |
| 247 | { |
| 248 | if ((self = [super init])) { |
| 249 | _textViews = [NSMutableDictionary dictionary]; |
| 250 | _sortedTextViews = [NSMutableOrderedSet orderedSet]; |
| 251 | _eventMonitor = [self addLocalEventMonitor]; |
| 252 | } |
| 253 | return self; |
| 254 | } |
| 255 | |
| 256 | #pragma mark - Cleanup |
| 257 | |
| 258 | - (void)dealloc |
| 259 | { |
| 260 | [NSEvent removeMonitor:_eventMonitor]; |
| 261 | } |
| 262 | |
| 263 | #pragma mark - Events |
| 264 | |
| 265 | - (BOOL)handleLeftMouseDown:(NSEvent *)event |
| 266 | { |
| 267 | // Allow for correct handling of double clicks on text views. |
| 268 | if (event.clickCount == 1) { |
| 269 | [self endSession]; |
| 270 | |
| 271 | NSTextView *textView = [self validTextViewForEvent:event]; |
| 272 | // Ignore if the text view is not "owned" by this manager, or if it is being |
| 273 | // edited at the time of this event. |
| 274 | if (textView && textView.window.firstResponder != textView) { |
| 275 | self.currentSession = [[INDTextViewSelectionSession alloc] initWithTextView:textView event:event]; |
| 276 | return YES; |
| 277 | } |
| 278 | } |
| 279 | return NO; |
| 280 | } |
| 281 | |
| 282 | - (BOOL)handleLeftMouseUp:(NSEvent *)event |
| 283 | { |
| 284 | if (self.currentSession == nil) return NO; |
| 285 | |
| 286 | [event.window makeFirstResponder:self]; |
| 287 | NSTextView *textView = [self validTextViewForEvent:event]; |
| 288 | if (textView != nil) { |
| 289 | // Handle link clicks properly. |
| 290 | NSUInteger index = INDCharacterIndexForTextViewEvent(event, textView); |
| 291 | if (index < textView.string.length) { |
| 292 | NSDictionary *attributes = [textView.attributedString attributesAtIndex:index effectiveRange:NULL]; |
| 293 | id link = attributes[NSLinkAttributeName]; |
| 294 | |
| 295 | // From documentation, NSLinkAttributeName could be either an NSString * or NSURL * |
| 296 | if (link != nil) { |
| 297 | [textView clickedOnLink:link atIndex:index]; |
| 298 | } |
| 299 | } |
| 300 | } |
| 301 | return YES; |
| 302 | } |
| 303 | |
| 304 | - (BOOL)handleLeftMouseDragged:(NSEvent *)event |
| 305 | { |
| 306 | if (self.currentSession == nil) return NO; |
| 307 | |
| 308 | NSTextView *textView = [self validTextViewForEvent:event]; |
| 309 | if (textView != nil) { |
| 310 | [textView.window makeFirstResponder:textView]; |
| 311 | NSSelectionAffinity affinity = (event.locationInWindow.y < self.currentSession.windowPoint.y) ? NSSelectionAffinityDownstream : NSSelectionAffinityUpstream; |
| 312 | self.currentSession.windowPoint = event.locationInWindow; |
| 313 | |
| 314 | NSUInteger current; |
| 315 | NSString *identifier = self.currentSession.textViewIdentifier; |
| 316 | if ([textView.ind_uniqueIdentifier isEqualTo:identifier]) { |
| 317 | current = self.currentSession.characterIndex; |
| 318 | } else { |
| 319 | INDTextViewMetadata *meta = self.textViews[identifier]; |
| 320 | NSUInteger start = [self.sortedTextViews indexOfObject:meta.textView]; |
| 321 | NSUInteger end = [self.sortedTextViews indexOfObject:textView]; |
| 322 | current = (end >= start) ? 0 : textView.string.length; |
| 323 | } |
| 324 | NSUInteger index = INDCharacterIndexForTextViewEvent(event, textView); |
| 325 | NSRange range = INDForwardRangeForIndices(index, current); |
| 326 | [self setSelectionRangeForTextView:textView withRange:range]; |
| 327 | [self processCompleteSelectionsForTargetTextView:textView affinity:affinity]; |
| 328 | } |
| 329 | return YES; |
| 330 | } |
| 331 | |
| 332 | - (BOOL)handleRightMouseDown:(NSEvent *)event |
| 333 | { |
| 334 | if (self.currentSession == nil) return NO; |
| 335 | |
| 336 | [event.window makeFirstResponder:self]; |
| 337 | NSTextView *textView = [self validTextViewForEvent:event]; |
| 338 | if (textView != nil) { |
| 339 | NSMenu *menu = [self menuForEvent:event]; |
| 340 | [NSMenu popUpContextMenu:menu withEvent:event forView:textView]; |
| 341 | } |
| 342 | return YES; |
| 343 | } |
| 344 | |
| 345 | - (id)addLocalEventMonitor |
| 346 | { |
| 347 | return [NSEvent addLocalMonitorForEventsMatchingMask:NSLeftMouseDownMask | NSLeftMouseDraggedMask | NSLeftMouseUpMask | NSRightMouseDownMask handler:^NSEvent *(NSEvent *event) { |
| 348 | switch (event.type) { |
| 349 | case NSLeftMouseDown: |
| 350 | return [self handleLeftMouseDown:event] ? nil : event; |
| 351 | case NSLeftMouseDragged: |
| 352 | return [self handleLeftMouseDragged:event] ? nil : event; |
| 353 | case NSLeftMouseUp: |
| 354 | return [self handleLeftMouseUp:event] ? nil : event; |
| 355 | case NSRightMouseDown: |
| 356 | return [self handleRightMouseDown:event] ? nil : event; |
| 357 | default: |
| 358 | return event; |
| 359 | } |
| 360 | }]; |
| 361 | } |
| 362 | |
| 363 | - (NSTextView *)validTextViewForEvent:(NSEvent *)event |
| 364 | { |
| 365 | NSView *contentView = event.window.contentView; |
| 366 | NSPoint point = [contentView convertPoint:event.locationInWindow fromView:nil]; |
| 367 | NSView *view = [contentView hitTest:point]; |
| 368 | if ([view isKindOfClass:NSTextView.class]) { |
| 369 | NSTextView *textView = (NSTextView *)view; |
| 370 | NSString *identifier = textView.ind_uniqueIdentifier; |
| 371 | return (textView.isSelectable && identifier && self.textViews[identifier]) ? textView : nil; |
| 372 | } |
| 373 | return nil; |
| 374 | } |
| 375 | |
| 376 | #pragma mark - NSResponder |
| 377 | |
| 378 | - (NSAttributedString *)cachedAttributedText |
| 379 | { |
| 380 | if (_cachedAttributedText == nil) { |
| 381 | _cachedAttributedText = [self buildAttributedStringForCurrentSession]; |
| 382 | } |
| 383 | return _cachedAttributedText; |
| 384 | } |
| 385 | |
| 386 | - (void)copy:(id)sender |
| 387 | { |
| 388 | NSPasteboard *pboard = NSPasteboard.generalPasteboard; |
| 389 | [pboard clearContents]; |
| 390 | [pboard writeObjects:@[self.cachedAttributedText]]; |
| 391 | } |
| 392 | |
| 393 | - (NSMenu *)buildSharingMenu |
| 394 | { |
| 395 | NSMenu *shareMenu = [[NSMenu alloc] initWithTitle:NSLocalizedString(@"Share", nil)]; |
| 396 | NSArray *services = [NSSharingService sharingServicesForItems:@[self.cachedAttributedText]]; |
| 397 | for (NSSharingService *service in services) { |
| 398 | NSMenuItem *item = [shareMenu addItemWithTitle:service.title action:@selector(share:) keyEquivalent:@""]; |
| 399 | item.target = self; |
| 400 | item.image = service.image; |
| 401 | item.representedObject = service; |
| 402 | } |
| 403 | return shareMenu; |
| 404 | } |
| 405 | |
| 406 | - (NSMenu *)menuForEvent:(NSEvent *)theEvent |
| 407 | { |
| 408 | NSMenu *menu = [[NSMenu alloc] initWithTitle:NSLocalizedString(@"Text Actions", nil)]; |
| 409 | NSMenuItem *copy = [menu addItemWithTitle:NSLocalizedString(@"Copy", nil) action:@selector(copy:) keyEquivalent:@""]; |
| 410 | copy.target = self; |
| 411 | [menu addItem:NSMenuItem.separatorItem]; |
| 412 | |
| 413 | NSMenuItem *share = [menu addItemWithTitle:NSLocalizedString(@"Share", nil) action:nil keyEquivalent:@""]; |
| 414 | share.submenu = [self buildSharingMenu]; |
| 415 | |
| 416 | return menu; |
| 417 | } |
| 418 | |
| 419 | - (void)share:(NSMenuItem *)item |
| 420 | { |
| 421 | NSSharingService *service = item.representedObject; |
| 422 | [service performWithItems:@[self.cachedAttributedText]]; |
| 423 | } |
| 424 | |
| 425 | - (void)rehighlightSelectedRangesAsActive:(BOOL)active |
| 426 | { |
| 427 | NSArray *ranges = self.currentSession.selectionRanges.allValues; |
| 428 | for (INDTextViewSelectionRange *range in ranges) { |
| 429 | INDTextViewMetadata *meta = self.textViews[range.textViewIdentifier]; |
| 430 | [meta.textView ind_highlightSelectedTextInRange:range.range drawActive:active]; |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | - (BOOL)resignFirstResponder |
| 435 | { |
| 436 | [self rehighlightSelectedRangesAsActive:NO]; |
| 437 | self.firstResponder = NO; |
| 438 | return YES; |
| 439 | } |
| 440 | |
| 441 | - (BOOL)becomeFirstResponder |
| 442 | { |
| 443 | [self rehighlightSelectedRangesAsActive:YES]; |
| 444 | self.firstResponder = YES; |
| 445 | return YES; |
| 446 | } |
| 447 | |
| 448 | #pragma mark - Selection |
| 449 | |
| 450 | - (void)setSelectionRangeForTextView:(NSTextView *)textView withRange:(NSRange)range |
| 451 | { |
| 452 | if (range.location == NSNotFound || NSMaxRange(range) == 0) { |
| 453 | [textView ind_deselectHighlightedText]; |
| 454 | [self.currentSession removeSelectionRangeForTextView:textView]; |
| 455 | } else { |
| 456 | INDTextViewSelectionRange *selRange = [[INDTextViewSelectionRange alloc] initWithTextView:textView selectedRange:range]; |
| 457 | [self.currentSession addSelectionRange:selRange]; |
| 458 | [textView ind_highlightSelectedTextInRange:range drawActive:YES]; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | - (void)processCompleteSelectionsForTargetTextView:(NSTextView *)textView affinity:(NSSelectionAffinity)affinity |
| 463 | { |
| 464 | if (self.currentSession == nil) return; |
| 465 | |
| 466 | INDTextViewMetadata *meta = self.textViews[self.currentSession.textViewIdentifier]; |
| 467 | NSUInteger start = [self.sortedTextViews indexOfObject:meta.textView]; |
| 468 | NSUInteger end = [self.sortedTextViews indexOfObject:textView]; |
| 469 | if (start == NSNotFound || end == NSNotFound) return; |
| 470 | |
| 471 | NSRange subrange = NSMakeRange(NSNotFound, 0); |
| 472 | BOOL select = NO; |
| 473 | NSUInteger count = self.sortedTextViews.count; |
| 474 | if (end > start) { |
| 475 | if (affinity == NSSelectionAffinityDownstream) { |
| 476 | subrange = NSMakeRange(start, end - start); |
| 477 | select = YES; |
| 478 | } else if (count > end + 1) { |
| 479 | subrange = NSMakeRange(end + 1, count - end - 1); |
| 480 | } |
| 481 | } else if (end < start) { |
| 482 | if (affinity == NSSelectionAffinityUpstream) { |
| 483 | subrange = NSMakeRange(end + 1, start - end); |
| 484 | select = YES; |
| 485 | } else { |
| 486 | subrange = NSMakeRange(0, end); |
| 487 | } |
| 488 | } |
| 489 | NSArray *subarray = nil; |
| 490 | if (subrange.location == NSNotFound) { |
| 491 | NSMutableOrderedSet *views = [self.sortedTextViews mutableCopy]; |
| 492 | [views removeObject:textView]; |
| 493 | subarray = views.array; |
| 494 | } else { |
| 495 | subarray = [self.sortedTextViews.array subarrayWithRange:subrange]; |
| 496 | } |
| 497 | for (NSTextView *tv in subarray) { |
| 498 | NSRange range; |
| 499 | if (select) { |
| 500 | NSRange currentRange = tv.ind_highlightedRange; |
| 501 | if (affinity == NSSelectionAffinityDownstream) { |
| 502 | range = NSMakeRange(currentRange.location, tv.string.length - currentRange.location); |
| 503 | } else { |
| 504 | range = NSMakeRange(0, NSMaxRange(currentRange) ?: tv.string.length); |
| 505 | } |
| 506 | } else { |
| 507 | range = NSMakeRange(0, 0); |
| 508 | } |
| 509 | [self setSelectionRangeForTextView:tv withRange:range]; |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | - (void)endSession |
| 514 | { |
| 515 | for (INDTextViewMetadata *meta in self.textViews.allValues) { |
| 516 | [meta.textView ind_deselectHighlightedText]; |
| 517 | } |
| 518 | self.currentSession = nil; |
| 519 | self.cachedAttributedText = nil; |
| 520 | } |
| 521 | |
| 522 | #pragma mark - Text |
| 523 | |
| 524 | - (NSAttributedString *)buildAttributedStringForCurrentSession |
| 525 | { |
| 526 | if (self.currentSession == nil) return nil; |
| 527 | |
| 528 | NSDictionary *ranges = self.currentSession.selectionRanges; |
| 529 | NSMutableArray *keys = [ranges.allKeys mutableCopy]; |
| 530 | NSComparator textViewComparator = self.textViewComparator; |
| 531 | [keys sortUsingComparator:^NSComparisonResult(NSString *obj1, NSString *obj2) { |
| 532 | INDTextViewMetadata *meta1 = self.textViews[obj1]; |
| 533 | INDTextViewMetadata *meta2 = self.textViews[obj2]; |
| 534 | return textViewComparator(meta1.textView, meta2.textView); |
| 535 | }]; |
| 536 | NSMutableAttributedString *string = [[NSMutableAttributedString alloc] init]; |
| 537 | [string beginEditing]; |
| 538 | [keys enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop) { |
| 539 | INDTextViewSelectionRange *range = ranges[key]; |
| 540 | INDTextViewMetadata *meta = self.textViews[range.textViewIdentifier]; |
| 541 | NSAttributedString *fragment = range.attributedText; |
| 542 | if (meta.transformationBlock != nil) { |
| 543 | fragment = meta.transformationBlock(fragment); |
| 544 | } |
| 545 | [string appendAttributedString:fragment]; |
| 546 | if (string.length && idx != keys.count - 1) { |
| 547 | NSDictionary *attributes = [string attributesAtIndex:string.length - 1 effectiveRange:NULL]; |
| 548 | NSAttributedString *newline = [[NSAttributedString alloc] initWithString:@"\n" attributes:attributes]; |
| 549 | [string appendAttributedString:newline]; |
| 550 | } |
| 551 | }]; |
| 552 | [string endEditing]; |
| 553 | return string; |
| 554 | } |
| 555 | |
| 556 | #pragma mark - Registration |
| 557 | |
| 558 | - (void)registerTextView:(NSTextView *)textView withUniqueIdentifier:(NSString *)identifier |
| 559 | { |
| 560 | [self registerTextView:textView withUniqueIdentifier:identifier transformationBlock:nil]; |
| 561 | } |
| 562 | |
| 563 | - (void)registerTextView:(NSTextView *)textView withUniqueIdentifier:(NSString *)identifier transformationBlock:(INDAttributedTextTransformationBlock)block |
| 564 | { |
| 565 | NSParameterAssert(identifier); |
| 566 | NSParameterAssert(textView); |
| 567 | |
| 568 | [self unregisterTextView:textView]; |
| 569 | textView.ind_uniqueIdentifier = identifier; |
| 570 | if (self.currentSession) { |
| 571 | INDTextViewSelectionRange *range = self.currentSession.selectionRanges[identifier]; |
| 572 | if (range) { |
| 573 | [textView ind_highlightSelectedTextInRange:range.range drawActive:self.firstResponder]; |
| 574 | } |
| 575 | } |
| 576 | self.textViews[identifier] = [[INDTextViewMetadata alloc] initWithTextView:textView transformationBlock:block]; |
| 577 | |
| 578 | [self.sortedTextViews addObject:textView]; |
| 579 | [self sortTextViews]; |
| 580 | } |
| 581 | |
| 582 | - (NSComparator)textViewComparator |
| 583 | { |
| 584 | return ^NSComparisonResult(NSTextView *obj1, NSTextView *obj2) { |
| 585 | // Convert to window coordinates to normalize coordinate flipped-ness |
| 586 | NSRect frame1 = [obj1 convertRect:obj1.bounds toView:nil]; |
| 587 | NSRect frame2 = [obj2 convertRect:obj2.bounds toView:nil]; |
| 588 | |
| 589 | CGFloat y1 = NSMinY(frame1); |
| 590 | CGFloat y2 = NSMinY(frame2); |
| 591 | |
| 592 | if (y1 > y2) { |
| 593 | return NSOrderedAscending; |
| 594 | } else if (y1 < y2) { |
| 595 | return NSOrderedDescending; |
| 596 | } else { |
| 597 | return NSOrderedSame; |
| 598 | } |
| 599 | }; |
| 600 | } |
| 601 | |
| 602 | - (void)sortTextViews |
| 603 | { |
| 604 | [self.sortedTextViews sortUsingComparator:self.textViewComparator]; |
| 605 | } |
| 606 | |
| 607 | - (void)unregisterTextView:(NSTextView *)textView |
| 608 | { |
| 609 | if (textView.ind_uniqueIdentifier == nil) return; |
| 610 | [self.textViews removeObjectForKey:textView.ind_uniqueIdentifier]; |
| 611 | [self.sortedTextViews removeObject:textView]; |
| 612 | [self sortTextViews]; |
| 613 | |
| 614 | textView.ind_uniqueIdentifier = nil; |
| 615 | } |
| 616 | |
| 617 | - (void)unregisterAllTextViews |
| 618 | { |
| 619 | [self.textViews removeAllObjects]; |
| 620 | [self.sortedTextViews removeAllObjects]; |
| 621 | } |
| 622 | |
| 623 | @end |