From 180579d026ffae575a25e698c279c465dbd1bd6b Mon Sep 17 00:00:00 2001
From: rowanbeentje <rowan@beent.je>
Date: Fri, 24 Apr 2009 01:07:20 +0000
Subject:  - Add support for click and click-and-drag selection when the line
 number view receives mouse events.  Enables easy selection of lines.

---
 Source/NoodleLineNumberView.h |  3 ++
 Source/NoodleLineNumberView.m | 65 ++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 67 insertions(+), 1 deletion(-)

(limited to 'Source')

diff --git a/Source/NoodleLineNumberView.h b/Source/NoodleLineNumberView.h
index 7d12d47d..85316dd0 100644
--- a/Source/NoodleLineNumberView.h
+++ b/Source/NoodleLineNumberView.h
@@ -39,6 +39,9 @@
 	NSColor				*textColor;
 	NSColor				*alternateTextColor;
 	NSColor				*backgroundColor;
+
+	// Add support for selection by clicking/dragging
+	unsigned			dragSelectionStartLine;
 }
 
 - (id)initWithScrollView:(NSScrollView *)aScrollView;
diff --git a/Source/NoodleLineNumberView.m b/Source/NoodleLineNumberView.m
index d1ecbd96..a4383102 100644
--- a/Source/NoodleLineNumberView.m
+++ b/Source/NoodleLineNumberView.m
@@ -28,7 +28,7 @@
 //
 
 // This version of the NoodleLineNumberView for Sequel Pro removes marker
-// functionality.
+// functionality and adds selection by clicking on the ruler.
 
 #import "NoodleLineNumberView.h"
 
@@ -439,6 +439,69 @@
     }
 }
 
+- (void)mouseDown:(NSEvent *)theEvent
+{
+	NSPoint					location;
+	unsigned				line;
+	NSTextView				*view;
+	
+    if (![[self clientView] isKindOfClass:[NSTextView class]]) return;
+	view = (NSTextView *)[self clientView];
+	
+	location = [self convertPoint:[theEvent locationInWindow] fromView:nil];
+	line = [self lineNumberForLocation:location.y];
+	dragSelectionStartLine = line;
+	
+	if (line != NSNotFound)
+	{
+		unsigned int selectionStart, selectionEnd;
+		NSMutableArray *lines = [self lineIndices];
+
+		selectionStart = [[lines objectAtIndex:(line - 1)] unsignedIntValue];
+		if (line < [lines count]) {
+			selectionEnd = [[lines objectAtIndex:line] unsignedIntValue];
+		} else {
+			selectionEnd = [[view string] length];
+		}
+		[view setSelectedRange:NSMakeRange(selectionStart, selectionEnd - selectionStart)];
+	}
+}
+
+- (void)mouseDragged:(NSEvent *)theEvent
+{
+	NSPoint					location;
+	unsigned				line, startLine, endLine;
+	NSTextView				*view;
+	
+    if (![[self clientView] isKindOfClass:[NSTextView class]] || dragSelectionStartLine == NSNotFound) return;
+	view = (NSTextView *)[self clientView];
+	
+	location = [self convertPoint:[theEvent locationInWindow] fromView:nil];
+	line = [self lineNumberForLocation:location.y];
+
+	if (line != NSNotFound)
+	{
+		unsigned int selectionStart, selectionEnd;
+		NSMutableArray *lines = [self lineIndices];
+		if (line >= dragSelectionStartLine) {
+			startLine = dragSelectionStartLine;
+			endLine = line;
+		} else {
+			startLine = line;
+			endLine = dragSelectionStartLine;
+		}
+
+		selectionStart = [[lines objectAtIndex:(startLine - 1)] unsignedIntValue];
+		if (endLine < [lines count]) {
+			selectionEnd = [[lines objectAtIndex:endLine] unsignedIntValue];
+		} else {
+			selectionEnd = [[view string] length];
+		}
+		[view setSelectedRange:NSMakeRange(selectionStart, selectionEnd - selectionStart)];
+	}
+	
+	[view autoscroll:theEvent];
+}
 
 #pragma mark NSCoding methods
 
-- 
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