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1
2# Classes responsible for drawing signs in the Vim user interface.
3
4import vim
5
6class VimSign(object):
7  SIGN_TEXT_BREAKPOINT_RESOLVED = "B>"
8  SIGN_TEXT_BREAKPOINT_UNRESOLVED = "b>"
9  SIGN_TEXT_PC = "->"
10  SIGN_HIGHLIGHT_COLOUR_PC = 'darkblue'
11
12  # unique sign id (for ':[sign/highlight] define)
13  sign_id = 1
14
15  # unique name id (for ':sign place')
16  name_id = 1
17
18  # Map of {(sign_text, highlight_colour) --> sign_name}
19  defined_signs = {}
20
21  def __init__(self, sign_text, buffer, line_number, highlight_colour=None):
22    """ Define the sign and highlight (if applicable) and show the sign. """
23
24    # Get the sign name, either by defining it, or looking it up in the map of defined signs
25    key = (sign_text, highlight_colour)
26    if not key in VimSign.defined_signs:
27      name = self.define(sign_text, highlight_colour)
28    else:
29      name = VimSign.defined_signs[key]
30
31    self.show(name, buffer.number, line_number)
32    pass
33
34  def define(self, sign_text, highlight_colour):
35    """ Defines sign and highlight (if highlight_colour is not None). """
36    sign_name = "sign%d" % VimSign.name_id
37    if highlight_colour is None:
38      vim.command("sign define %s text=%s" % (sign_name, sign_text))
39    else:
40      self.highlight_name = "highlight%d" % VimSign.name_id
41      vim.command("highlight %s ctermbg=%s guibg=%s" % (self.highlight_name,
42                                                        highlight_colour,
43                                                        highlight_colour))
44      vim.command("sign define %s text=%s linehl=%s texthl=%s" % (sign_name,
45                                                                  sign_text,
46                                                                  self.highlight_name,
47                                                                  self.highlight_name))
48    VimSign.defined_signs[(sign_text, highlight_colour)] = sign_name
49    VimSign.name_id += 1
50    return sign_name
51
52
53  def show(self, name, buffer_number, line_number):
54    self.id = VimSign.sign_id
55    VimSign.sign_id += 1
56    vim.command("sign place %d name=%s line=%d buffer=%s" % (self.id, name, line_number, buffer_number))
57    pass
58
59  def hide(self):
60    vim.command("sign unplace %d" % self.id)
61    pass
62
63class BreakpointSign(VimSign):
64  def __init__(self, buffer, line_number, is_resolved):
65    txt = VimSign.SIGN_TEXT_BREAKPOINT_RESOLVED if is_resolved else VimSign.SIGN_TEXT_BREAKPOINT_UNRESOLVED
66    super(BreakpointSign, self).__init__(txt, buffer, line_number)
67
68class PCSign(VimSign):
69  def __init__(self, buffer, line_number, is_selected_thread):
70    super(PCSign, self).__init__(VimSign.SIGN_TEXT_PC,
71                                 buffer,
72                                 line_number,
73                                 VimSign.SIGN_HIGHLIGHT_COLOUR_PC if is_selected_thread else None)
74