Highlight the line for current search result

[sandy081]

Find widget highlights the line for current find match. Allow the same behavior of Search.

[sandy081]

Implemented by 24743e8

[sandy081]

Verification:

Note: Line highlight used should be same as in Find / Go to line / Outline / Problems view

• Single click on the result -> Line highlight is shown.
• Type Space on the result -> Line highlight is shown.
• Toggle Search view -> Line highlight is also toggled.
• Click inside editor -> Line highlight is removed.
• Double click on the result -> No line highlight is shown.
• When Search view is hidden, no line highlights from Search view are shown.
• When results are cleared, line highlight is removed
• When new search is performed, line highlight is removed