Class: TerminalNotes::FileList

Inherits:
Widget
  • Object
show all
Defined in:
lib/terminal-notes/file_list.rb

Constant Summary collapse

WIDTH = 
1
EXTENSIONS = 
['.md', '.txt']
DEFAULT_EDITOR = 
"nano"
CONTENT_PADDING = 
2
FILE_INDICATOR = 
"❯ "
INTER_COL_GAP = 
"  "
MATCHERS = 
[:regex, :fuzzy]

Constants inherited from Widget

Widget::TITLE_PADDING

Instance Attribute Summary

Attributes inherited from Widget

#height, #width, #window

Instance Method Summary collapse

Methods inherited from Widget

#redraw, #resize

Constructor Details

#initialize(parent:, height:, y:, directory:, extensions: EXTENSIONS) ⇒ FileList

Returns a new instance of FileList.



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# File 'lib/terminal-notes/file_list.rb', line 16

def initialize(parent:, height:, y:, directory:,
               extensions: EXTENSIONS)
    super(parent: parent, title: "Files",
          width: WIDTH, height: height, y: y)

    @content_start = Cursor.new(x: 0, y: CONTENT_PADDING)

    # Find all the files that match specified extensions
    @all_files = Dir.glob("#{directory}/*")
    @all_files = @all_files.find_all do |f|
        f.match /(#{EXTENSIONS.join("|")})$/
    end
    @all_files = @all_files.map do |f|
        {
            name: f.gsub("#{directory}/", ''),
            path: f,
            date: "Jun 24, 2012",
            time: "05:32pm"
        }
    end
    @filtered_files = @all_files

    @fuzzy_matcher = FuzzyMatch.new(@all_files, read: :name)
    @curr_matcher  = 0

    @current_line = 0
    @has_focus    = false

    @on_file_opened_delegates = []

    draw
end

Instance Method Details

#draw ⇒ Object 



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# File 'lib/terminal-notes/file_list.rb', line 60

def draw
    super do
        # Calculate where to start drawing the table
        #
        table_width = 0

        # Calculate NAME col width
        longest_file = @all_files.max { |a, b| a[:name].size <=> b[:name].size }
        if longest_file.nil?
            name_col_width = 10
        else
            name_col_width = 2 + longest_file[:name].size
        end

        # Calculate DATE col width, e.g. Jun 24, 2012
        date_col_width = 12

        # Calculate TIME col width, e.g. 05:24pm
        time_col_width = 7

        table_width += name_col_width + INTER_COL_GAP.size
        table_width += date_col_width + INTER_COL_GAP.size
        table_width += time_col_width

        # Move cursor to center the table
        cursor = @content_start.dup
        cursor.moveTo(x: (@parent.size[:columns] - table_width) / 2)
        @window.move_cursor(cursor)

        # Start actually drawing
        #

        # Draw header
        line  = "NAME".ljust(name_col_width) + INTER_COL_GAP
        line += "DATE".ljust(date_col_width) + INTER_COL_GAP
        line += "TIME".ljust(time_col_width)
        @window.draw_string(line)

        # Move cursor back to accomodate the file indicator
        cursor.moveBy(-FILE_INDICATOR.size, 1)
        @window.move_cursor(cursor)

        no_indicator = " " * FILE_INDICATOR.size

        index = 0
        @filtered_files.each do |file|
            line  = no_indicator
            line += file[:name].ljust(name_col_width) + INTER_COL_GAP
            line += file[:date].rjust(date_col_width) + INTER_COL_GAP
            line += file[:time].rjust(time_col_width)

            @window.draw_string(line)

            # Draw the arrow
            if @has_focus && index == @current_line
                @window.move_cursor(cursor)
                @window.draw_string(FILE_INDICATOR)
            end

            cursor.moveBy(0, 1)
            @window.move_cursor(cursor)

            index += 1
        end

        clear_line = no_indicator + " " * table_width
        while index < @all_files.size
            @window.draw_string(clear_line)
            cursor.moveBy(0, 1)
            @window.move_cursor(cursor)

            index += 1
        end

    end
end

#filter(pattern) ⇒ Object 



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# File 'lib/terminal-notes/file_list.rb', line 153

def filter pattern
    old_file_list = @filtered_files

    if pattern.empty?
        @filtered_files = @all_files
    else
        matcher_type = MATCHERS[@curr_matcher]
        case matcher_type
        when :regex
            @filtered_files = @all_files.find_all do |f|
                f[:name].match /#{pattern}/
            end
        when :fuzzy
            @filtered_files = @fuzzy_matcher.find_all(pattern)
        else
            raise "Unknown Matcher! '#{matcher_type}'"
        end
    end

    # If the file list has changed, reset current line marker
    @current_line = 0 unless old_file_list == @filtered_files

    draw
end

#focus ⇒ Object

TODO



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# File 'lib/terminal-notes/file_list.rb', line 50

def focus
    @has_focus = true
    draw
end

#notify_file_opened(file) ⇒ Object 



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# File 'lib/terminal-notes/file_list.rb', line 187

def notify_file_opened(file)
    @on_file_opened_delegates.each do |delegate|
        delegate.call(file)
    end
end

#on_file_opened(&block) ⇒ Object 



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# File 'lib/terminal-notes/file_list.rb', line 183

def on_file_opened &block
    @on_file_opened_delegates << block
end

#on_key(key) ⇒ Object 



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# File 'lib/terminal-notes/file_list.rb', line 137

def on_key key
    return unless @has_focus

    case key
    when "j"
        scroll_down
    when "k"
        scroll_up
    when :ENTER
        open_current
    else
    end

    draw
end

#toggle_matcher ⇒ Object 



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# File 'lib/terminal-notes/file_list.rb', line 178

def toggle_matcher
    @curr_matcher += 1
    @curr_matcher  = 0 if @curr_matcher >= MATCHERS.size
end

#unfocus ⇒ Object 



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# File 'lib/terminal-notes/file_list.rb', line 55

def unfocus
    @has_focus = false
    draw
end