BigW Consortium Gitlab

preview_markdown.js 4.61 KB
Newer Older
Fatih Acet committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
(function() {
  var lastTextareaPreviewed, markdownPreview, previewButtonSelector, writeButtonSelector;

  this.MarkdownPreview = (function() {
    function MarkdownPreview() {}

    MarkdownPreview.prototype.referenceThreshold = 10;

    MarkdownPreview.prototype.ajaxCache = {};

    MarkdownPreview.prototype.showPreview = function(form) {
      var mdText, preview;
      preview = form.find('.js-md-preview');
      mdText = form.find('textarea.markdown-area').val();
      if (mdText.trim().length === 0) {
        preview.text('Nothing to preview.');
        return this.hideReferencedUsers(form);
      } else {
        preview.text('Loading...');
        return this.renderMarkdown(mdText, (function(_this) {
          return function(response) {
            preview.html(response.body);
            preview.syntaxHighlight();
            return _this.renderReferencedUsers(response.references.users, form);
          };
        })(this));
      }
    };

    MarkdownPreview.prototype.renderMarkdown = function(text, success) {
31
      if (!window.preview_markdown_path) {
Fatih Acet committed
32 33 34 35 36 37 38
        return;
      }
      if (text === this.ajaxCache.text) {
        return success(this.ajaxCache.response);
      }
      return $.ajax({
        type: 'POST',
39
        url: window.preview_markdown_path,
Fatih Acet committed
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150
        data: {
          text: text
        },
        dataType: 'json',
        success: (function(_this) {
          return function(response) {
            _this.ajaxCache = {
              text: text,
              response: response
            };
            return success(response);
          };
        })(this)
      });
    };

    MarkdownPreview.prototype.hideReferencedUsers = function(form) {
      var referencedUsers;
      referencedUsers = form.find('.referenced-users');
      return referencedUsers.hide();
    };

    MarkdownPreview.prototype.renderReferencedUsers = function(users, form) {
      var referencedUsers;
      referencedUsers = form.find('.referenced-users');
      if (referencedUsers.length) {
        if (users.length >= this.referenceThreshold) {
          referencedUsers.show();
          return referencedUsers.find('.js-referenced-users-count').text(users.length);
        } else {
          return referencedUsers.hide();
        }
      }
    };

    return MarkdownPreview;

  })();

  markdownPreview = new MarkdownPreview();

  previewButtonSelector = '.js-md-preview-button';

  writeButtonSelector = '.js-md-write-button';

  lastTextareaPreviewed = null;

  $.fn.setupMarkdownPreview = function() {
    var $form, form_textarea;
    $form = $(this);
    form_textarea = $form.find('textarea.markdown-area');
    form_textarea.on('input', function() {
      return markdownPreview.hideReferencedUsers($form);
    });
    return form_textarea.on('blur', function() {
      return markdownPreview.showPreview($form);
    });
  };

  $(document).on('markdown-preview:show', function(e, $form) {
    if (!$form) {
      return;
    }
    lastTextareaPreviewed = $form.find('textarea.markdown-area');
    $form.find(writeButtonSelector).parent().removeClass('active');
    $form.find(previewButtonSelector).parent().addClass('active');
    $form.find('.md-write-holder').hide();
    $form.find('.md-preview-holder').show();
    return markdownPreview.showPreview($form);
  });

  $(document).on('markdown-preview:hide', function(e, $form) {
    if (!$form) {
      return;
    }
    lastTextareaPreviewed = null;
    $form.find(writeButtonSelector).parent().addClass('active');
    $form.find(previewButtonSelector).parent().removeClass('active');
    $form.find('.md-write-holder').show();
    $form.find('textarea.markdown-area').focus();
    return $form.find('.md-preview-holder').hide();
  });

  $(document).on('markdown-preview:toggle', function(e, keyboardEvent) {
    var $target;
    $target = $(keyboardEvent.target);
    if ($target.is('textarea.markdown-area')) {
      $(document).triggerHandler('markdown-preview:show', [$target.closest('form')]);
      return keyboardEvent.preventDefault();
    } else if (lastTextareaPreviewed) {
      $target = lastTextareaPreviewed;
      $(document).triggerHandler('markdown-preview:hide', [$target.closest('form')]);
      return keyboardEvent.preventDefault();
    }
  });

  $(document).on('click', previewButtonSelector, function(e) {
    var $form;
    e.preventDefault();
    $form = $(this).closest('form');
    return $(document).triggerHandler('markdown-preview:show', [$form]);
  });

  $(document).on('click', writeButtonSelector, function(e) {
    var $form;
    e.preventDefault();
    $form = $(this).closest('form');
    return $(document).triggerHandler('markdown-preview:hide', [$form]);
  });

}).call(this);