diff options
Diffstat (limited to 'app/assets/javascripts/line_highlighter.js.coffee')
| -rw-r--r-- | app/assets/javascripts/line_highlighter.js.coffee | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/app/assets/javascripts/line_highlighter.js.coffee b/app/assets/javascripts/line_highlighter.js.coffee deleted file mode 100644 index 2254a3f91ae..00000000000 --- a/app/assets/javascripts/line_highlighter.js.coffee +++ /dev/null @@ -1,148 +0,0 @@ -# LineHighlighter -# -# Handles single- and multi-line selection and highlight for blob views. -# -#= require jquery.scrollTo -# -# ### Example Markup -# -# <div id="blob-content-holder"> -# <div class="file-content"> -# <div class="line-numbers"> -# <a href="#L1" id="L1" data-line-number="1">1</a> -# <a href="#L2" id="L2" data-line-number="2">2</a> -# <a href="#L3" id="L3" data-line-number="3">3</a> -# <a href="#L4" id="L4" data-line-number="4">4</a> -# <a href="#L5" id="L5" data-line-number="5">5</a> -# </div> -# <pre class="code highlight"> -# <code> -# <span id="LC1" class="line">...</span> -# <span id="LC2" class="line">...</span> -# <span id="LC3" class="line">...</span> -# <span id="LC4" class="line">...</span> -# <span id="LC5" class="line">...</span> -# </code> -# </pre> -# </div> -# </div> -# -class @LineHighlighter - # CSS class applied to highlighted lines - highlightClass: 'hll' - - # Internal copy of location.hash so we're not dependent on `location` in tests - _hash: '' - - # Initialize a LineHighlighter object - # - # hash - String URL hash for dependency injection in tests - constructor: (hash = location.hash) -> - @_hash = hash - - @bindEvents() - - unless hash == '' - range = @hashToRange(hash) - - if range[0] - @highlightRange(range) - - # Scroll to the first highlighted line on initial load - # Offset -50 for the sticky top bar, and another -100 for some context - $.scrollTo("#L#{range[0]}", offset: -150) - - bindEvents: -> - $('#blob-content-holder').on 'mousedown', 'a[data-line-number]', @clickHandler - - # While it may seem odd to bind to the mousedown event and then throw away - # the click event, there is a method to our madness. - # - # If not done this way, the line number anchor will sometimes keep its - # active state even when the event is cancelled, resulting in an ugly border - # around the link and/or a persisted underline text decoration. - - $('#blob-content-holder').on 'click', 'a[data-line-number]', (event) -> - event.preventDefault() - - clickHandler: (event) => - event.preventDefault() - - @clearHighlight() - - lineNumber = $(event.target).closest('a').data('line-number') - current = @hashToRange(@_hash) - - unless current[0] && event.shiftKey - # If there's no current selection, or there is but Shift wasn't held, - # treat this like a single-line selection. - @setHash(lineNumber) - @highlightLine(lineNumber) - else if event.shiftKey - if lineNumber < current[0] - range = [lineNumber, current[0]] - else - range = [current[0], lineNumber] - - @setHash(range[0], range[1]) - @highlightRange(range) - - # Unhighlight previously highlighted lines - clearHighlight: -> - $(".#{@highlightClass}").removeClass(@highlightClass) - - # Convert a URL hash String into line numbers - # - # hash - Hash String - # - # Examples: - # - # hashToRange('#L5') # => [5, null] - # hashToRange('#L5-15') # => [5, 15] - # hashToRange('#foo') # => [null, null] - # - # Returns an Array - hashToRange: (hash) -> - matches = hash.match(/^#?L(\d+)(?:-(\d+))?$/) - - if matches && matches.length - first = parseInt(matches[1]) - last = if matches[2] then parseInt(matches[2]) else null - - [first, last] - else - [null, null] - - # Highlight a single line - # - # lineNumber - Line number to highlight - highlightLine: (lineNumber) => - $("#LC#{lineNumber}").addClass(@highlightClass) - - # Highlight all lines within a range - # - # range - Array containing the starting and ending line numbers - highlightRange: (range) -> - if range[1] - for lineNumber in [range[0]..range[1]] - @highlightLine(lineNumber) - else - @highlightLine(range[0]) - - # Set the URL hash string - setHash: (firstLineNumber, lastLineNumber) => - if lastLineNumber - hash = "#L#{firstLineNumber}-#{lastLineNumber}" - else - hash = "#L#{firstLineNumber}" - - @_hash = hash - @__setLocationHash__(hash) - - # Make the actual hash change in the browser - # - # This method is stubbed in tests. - __setLocationHash__: (value) -> - # We're using pushState instead of assigning location.hash directly to - # prevent the page from scrolling on the hashchange event - history.pushState({turbolinks: false, url: value}, document.title, value) |