74 lines
2.5 KiB
Ruby
74 lines
2.5 KiB
Ruby
# frozen_string_literal: true
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# Finds the correct checkbox in the passed in markdown/html and toggles it's state,
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# returning the updated markdown/html.
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# We don't care if the text has changed above or below the specific checkbox, as long
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# the checkbox still exists at exactly the same line number and the text is equal.
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# If successful, new values are available in `updated_markdown` and `updated_markdown_html`
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class TaskListToggleService
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attr_reader :updated_markdown, :updated_markdown_html
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def initialize(markdown, markdown_html, line_source:, line_number:, toggle_as_checked:)
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@markdown = markdown
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@markdown_html = markdown_html
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@line_source = line_source
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@line_number = line_number
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@toggle_as_checked = toggle_as_checked
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@updated_markdown, @updated_markdown_html = nil
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end
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def execute
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return false unless markdown && markdown_html
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toggle_markdown && toggle_markdown_html
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end
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private
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attr_reader :markdown, :markdown_html, :toggle_as_checked
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attr_reader :line_source, :line_number
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def toggle_markdown
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source_lines = markdown.split("\n")
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source_line_index = line_number - 1
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markdown_task = source_lines[source_line_index]
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# The source in the DB could be using either \n or \r\n line endings
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return unless markdown_task.chomp == line_source
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return unless source_checkbox = Taskable::ITEM_PATTERN.match(markdown_task)
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currently_checked = TaskList::Item.new(source_checkbox[2]).complete?
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# Check `toggle_as_checked` to make sure we don't accidentally replace
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# any `[ ]` or `[x]` in the middle of the text
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if currently_checked
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markdown_task.sub!(Taskable::COMPLETE_PATTERN, '[ ]') unless toggle_as_checked
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elsif toggle_as_checked
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markdown_task.sub!(Taskable::INCOMPLETE_PATTERN, '[x]')
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end
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source_lines[source_line_index] = markdown_task
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@updated_markdown = source_lines.join("\n")
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end
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def toggle_markdown_html
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html = Nokogiri::HTML.fragment(markdown_html)
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html_checkbox = get_html_checkbox(html)
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return unless html_checkbox
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if toggle_as_checked
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html_checkbox[:checked] = 'checked'
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else
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html_checkbox.remove_attribute('checked')
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end
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@updated_markdown_html = html.to_html
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end
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# When using CommonMark, we should be able to use the embedded `sourcepos` attribute to
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# target the exact line in the DOM.
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def get_html_checkbox(html)
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html.css(".task-list-item[data-sourcepos^='#{line_number}:'] input.task-list-item-checkbox").first
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end
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end
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