[NETBEANS-722] Code Folding should respect mouse -click location

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Duplicate
• Affects Version/s: 9.0, 11.1, 11.2
• Component/s: editor - Code folding
• Labels: Regression cursor cursor-location edit-location

Environment

Product Version: Apache NetBeans IDE Dev (Build incubator-netbeans-release-205-on-20180202)
Java: 10; Java HotSpot(TM) 64-Bit Server VM 10+46
Runtime: Java(TM) SE Runtime Environment 10+46
System: Windows 10 version 10.0 running on amd64; Cp1252; en_AU (nb)
User directory: Z:\tmp\.other\user\netbeans\v09.00-beta\FourAbs
Cache directory: Z:\tmp\.other\cache\netbeans\FourAbs-09
Plugins:

• Netbeans Gradle plugin v1.4.3

• Assignee: Unassigned
• Reporter: aplatypus
• Created: 24/Apr/18 04:58
• Updated: 05/Mar/20 12:04
• Resolved: 05/Mar/20 12:04

Description

context

• Editing Java source code
• Most Java method signatures are folded (with the code-folding feature)
• Scroll back or forward from the current editing line (previous cursor position)
• The previous position has moved off the visible line of code

expected / desirable

Based in Netbeans 8.2 behaviour

• Click on [*+*] icon to expand a method

   [+] void abcd() { } 

• Expand method body to this

   [+]
        void abcd() { 
  
          // something something
        } 
  

• Cursor STAYS on the or near-by the abcd() method

actual

• Cursor appears to Jump rapidly to the last edit line "previous cursor position"
• this is extremely disconcerting every time.
• It has become extremely annoying in a very short time
• The place – Line of code or method – the user is actually interested in has vanished from the screen

Impact

• I have not yet thrown my screen out the window
• this requires NOT only going back to the place in the code you need.
• You must also remember to click the mouse on that new position line someplace or
  • You will lose your place again
• It may have taken several minutes to find the specific few lines or method you are seeking
• One may need to scan 1,000-s of lines in collapsed code
• All these effects are time wasting, unattractive, and off-putting
• In addition time is money – My bosses won't like Netbeans becoming less productive.

Furthermore...

• At least in the current Netbeans 9, the ALT-LeftArrow and ALT-RightArrow don't alwasy jump to the context in the current file.
• They often skip about throudh recently edited files
  • Which is Largely the function of the ALT-Tab imho.
• In any case these arrow key functions don't look at were the mouse click for code-unfolding / code-folding happened.

Issue Links

• duplicates: NETBEANS-2082 Scroll to the caret position when code fold feature is run
• is duplicated by: NETBEANS-940 Expanding code block resets caret position