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Close #55. Use arrows to select column(s)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| // | ||
| // TTTableView.h | ||
| // Table Tool | ||
| // | ||
| // Created by Rob Warner on 10/7/19. | ||
| // Copyright © 2019 Egger Apps. All rights reserved. | ||
| // | ||
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| #import <Cocoa/Cocoa.h> | ||
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| NS_ASSUME_NONNULL_BEGIN | ||
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| @interface TTTableView : NSTableView<NSTableViewDelegate> | ||
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| -(void)resetAnchor; | ||
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| @end | ||
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| NS_ASSUME_NONNULL_END |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| // | ||
| // TTTableView.m | ||
| // Table Tool | ||
| // | ||
| // Created by Rob Warner on 10/7/19. | ||
| // Copyright © 2019 Egger Apps. All rights reserved. | ||
| // | ||
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| #import <math.h> | ||
| #import "TTTableView.h" | ||
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| const int NONE_SELECTED = -1; | ||
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| @implementation TTTableView | ||
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| NSInteger anchor = NONE_SELECTED; | ||
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| - (void)keyDown:(NSEvent *)event { | ||
| unichar character = [[event characters] characterAtIndex:0]; | ||
| if (character == NSLeftArrowFunctionKey || character == NSRightArrowFunctionKey) { | ||
| BOOL handled = (event.modifierFlags & NSShiftKeyMask) ? | ||
| [self selectMultipleColumns: character] : | ||
| [self selectSingleColumn: character]; | ||
| if (handled) { | ||
| return; | ||
| } | ||
| } | ||
| [super keyDown:event]; | ||
| } | ||
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| - (BOOL)selectMultipleColumns:(unichar)character { | ||
| NSInteger selected = self.selectedColumn; | ||
| if (anchor == NONE_SELECTED) { | ||
| anchor = selected; | ||
| } | ||
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| NSInteger newColumn = character == NSLeftArrowFunctionKey ? selected - 1 : selected + 1; | ||
| if (newColumn >= 0 && newColumn < self.numberOfColumns) { | ||
| if ((character == NSLeftArrowFunctionKey && newColumn >= anchor) || (character == NSRightArrowFunctionKey && newColumn <= anchor)) { | ||
| [self deselectColumn:selected]; | ||
| } | ||
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| [self selectColumnIndexes:[NSIndexSet indexSetWithIndex:newColumn] byExtendingSelection:YES]; | ||
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| return YES; | ||
| } | ||
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| return NO; | ||
| } | ||
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| - (BOOL)selectSingleColumn:(unichar)character { | ||
| [self resetAnchor]; | ||
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| NSInteger newColumn = character == NSLeftArrowFunctionKey ? self.selectedColumn - 1 : self.selectedColumn + 1; | ||
| if (newColumn >= 0 && newColumn < self.numberOfColumns) { | ||
| [self selectColumnIndexes:[NSIndexSet indexSetWithIndex:newColumn] byExtendingSelection:NO]; | ||
| return YES; | ||
| } | ||
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| return NO; | ||
| } | ||
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| - (void)resetAnchor { | ||
| anchor = NONE_SELECTED; | ||
| } | ||
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| @end |