Class: GitSpelunk::UI

Inherits:
Object
  • Object
show all
Defined in:
lib/git_spelunk/ui.rb,
lib/git_spelunk/ui/repo.rb,
lib/git_spelunk/ui/pager.rb,
lib/git_spelunk/ui/status.rb,
lib/git_spelunk/ui/window.rb

Defined Under Namespace

Classes: PagerWindow, RepoWindow, StatusWindow, Window

Instance Method Summary collapse

Constructor Details

#initialize(file_context) ⇒ UI

Returns a new instance of UI.



9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
# File 'lib/git_spelunk/ui.rb', line 9

def initialize(file_context)
  init_curses

  calculate_heights!
  @file_context = file_context
  @history = [file_context]

  @pager = PagerWindow.new(@pager_height)
  @pager.data = @file_context.get_blame

  @repo = RepoWindow.new(@repo_height, @pager_height)

  @status = StatusWindow.new(1, Curses.lines - 1)
end

Instance Method Details

#after_navigation ⇒ Object 



77
78
79
80
 
# File 'lib/git_spelunk/ui.rb', line 77

def after_navigation
  @pager.highlight_sha = true
  @status.exit_command_mode!
end

#calculate_heights! ⇒ Object 



37
38
39
40
41
 
# File 'lib/git_spelunk/ui.rb', line 37

def calculate_heights!
  @repo_height = (Curses.lines.to_f * 0.20).to_i
  @pager_height = Curses.lines  - @repo_height - 1
  @status_height = 1
end

#getline ⇒ Object

you’d really think there was a better way



162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
 
# File 'lib/git_spelunk/ui.rb', line 162

def getline
  while ch = Curses.getch
    case ch
    when Curses::KEY_CTRL_C
      @status.command_buffer = ''
      return
    when Curses::KEY_CTRL_M
      return @status.command_buffer[1..-1]
    when Curses::KEY_BACKSPACE, Curses::KEY_CTRL_H, 127
      if @status.command_buffer == "/"
        return
      end
      @status.command_buffer.chop!
    else
      if ch.is_a?(String)
        @status.command_buffer += ch
      end
    end
    @status.draw
  end
end

#handle_key(key) ⇒ Object 



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
151
152
153
154
155
156
157
158
159
 
# File 'lib/git_spelunk/ui.rb', line 82

def handle_key(key)
  @heartbeat = Time.now
  case key
  when Curses::KEY_DOWN, 'j'
    @pager.cursordown
    after_navigation
  when Curses::KEY_UP, '-', 'k'
    @pager.cursorup
    after_navigation
  when Curses::KEY_CTRL_D, ' '
    @pager.pagedown
    after_navigation
  when Curses::KEY_CTRL_U
    @pager.pageup
    after_navigation
  when *(0..9).to_a.map(&:to_s)
    @status.command_buffer += key
  when Curses::KEY_CTRL_M
    if @status.command_buffer != ''
      @pager.go_to(@status.command_buffer.to_i)
    end
    after_navigation
  when 'G'
    if @status.command_buffer != ''
      @pager.go_to(@status.command_buffer.to_i)
    else
      @pager.go_bottom
    end
    after_navigation
  when '['
    goto = @file_context.get_line_for_sha_parent(@pager.cursor)
    if goto
      @file_context.line_number = @pager.cursor
      @history.push(@file_context)

      @file_context = @file_context.clone_for_parent_sha(@pager.cursor)
      @pager.data = @file_context.get_blame
      @pager.go_to(goto)

      # force commit info update
      @last_line = nil
    end
  when ']'
    if @history.last
      @file_context = @history.pop
      @pager.data = @file_context.get_blame
      @pager.go_to(@file_context.line_number)
      @pager.draw
      @status.draw

      # force commit info update
      @last_line = nil
    end
  when 's'
    @heartbeat = nil
    sha = @file_context.sha_for_line(@pager.cursor)
    Curses.close_screen
    system("git -p --git-dir='#{@file_context.repo.path}' show #{sha} | less")
    Curses.stdscr.refresh
    [@pager, @repo, @status].each(&:draw)
  when '/'
    @heartbeat = nil
    @status.command_buffer = '/'
    @status.draw

    line = getline
    if line
      @search_string = line
      @pager.search(@search_string, false)
    end
    @status.exit_command_mode!
  when 'n'
    @pager.search(@search_string, true)
    after_navigation
  when 'q'
    exit
  end
end

#heartbeat_expired? ⇒ Boolean

Returns:

  • (Boolean) 


73
74
75
 
# File 'lib/git_spelunk/ui.rb', line 73

def heartbeat_expired?
  @heartbeat && (Time.now - @heartbeat).to_f > 0.30
end

#init_curses ⇒ Object 



24
25
26
27
28
29
30
31
32
33
34
35
 
# File 'lib/git_spelunk/ui.rb', line 24

def init_curses
  Curses.init_screen
  Curses.start_color
  Curses.raw
  Curses.nonl
  Curses.noecho
  Curses.curs_set(0)
  screen = Curses.stdscr
  screen.refresh
  screen.keypad(1)
  Curses.init_pair(ACTIVE_SHA_COLOR, Curses::COLOR_GREEN, Curses::COLOR_BLACK)
end

#pause_thread ⇒ Object 



52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
 
# File 'lib/git_spelunk/ui.rb', line 52

def pause_thread
  Thread.abort_on_exception = true
  Thread.new do
    while true
      if heartbeat_expired? && @last_line != @pager.cursor
        current_line = @pager.cursor
        content = @file_context.get_line_commit_info(current_line)
        if heartbeat_expired? && @pager.cursor == current_line
          @repo.content = content
          @repo.draw
          @status.draw
          @last_line = current_line
        else
          @heartbeat = Time.now
        end
      end
      sleep 0.05
    end
  end
end

#run ⇒ Object 



43
44
45
46
47
48
49
50
 
# File 'lib/git_spelunk/ui.rb', line 43

def run
  @repo.content = @file_context.get_line_commit_info(@pager.cursor)
  pause_thread
  begin
    [@pager, @repo, @status].each(&:draw)
    handle_key(Curses.getch)
  end while true
end