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# Copyright 2010-2011 Wincent Colaiuta. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
require 'command-t/finder/buffer_finder'
require 'command-t/finder/jump_finder'
require 'command-t/finder/file_finder'
require 'command-t/match_window'
require 'command-t/prompt'
require 'command-t/vim/path_utilities'
module CommandT
class Controller
include VIM::PathUtilities
def initialize
@prompt = Prompt.new
end
def show_buffer_finder
@path = VIM::pwd
@active_finder = buffer_finder
show
end
def show_jump_finder
@path = VIM::pwd
@active_finder = jump_finder
show
end
def show_file_finder
# optional parameter will be desired starting directory, or ""
@path = File.expand_path(::VIM::evaluate('a:arg'), VIM::pwd)
@active_finder = file_finder
file_finder.path = @path
show
rescue Errno::ENOENT
# probably a problem with the optional parameter
@match_window.print_no_such_file_or_directory
end
def hide
@match_window.close
if VIM::Window.select @initial_window
if @initial_buffer.number == 0
# upstream bug: buffer number misreported as 0
# see: https://wincent.com/issues/1617
::VIM::command "silent b #{@initial_buffer.name}"
else
::VIM::command "silent b #{@initial_buffer.number}"
end
end
end
def flush
@max_height = nil
@file_finder = nil
end
def handle_key
key = ::VIM::evaluate('a:arg').to_i.chr
if @focus == @prompt
@prompt.add! key
list_matches
else
@match_window.find key
end
end
def backspace
if @focus == @prompt
@prompt.backspace!
list_matches
end
end
def delete
if @focus == @prompt
@prompt.delete!
list_matches
end
end
def accept_selection options = {}
selection = @match_window.selection
hide
open_selection(selection, options) unless selection.nil?
end
def toggle_focus
@focus.unfocus # old focus
@focus = @focus == @prompt ? @match_window : @prompt
@focus.focus # new focus
end
def cancel
hide
end
def select_next
@match_window.select_next
end
def select_prev
@match_window.select_prev
end
def clear
@prompt.clear!
list_matches
end
def cursor_left
@prompt.cursor_left if @focus == @prompt
end
def cursor_right
@prompt.cursor_right if @focus == @prompt
end
def cursor_end
@prompt.cursor_end if @focus == @prompt
end
def cursor_start
@prompt.cursor_start if @focus == @prompt
end
def leave
@match_window.leave
end
def unload
@match_window.unload
end
private
def show
@initial_window = $curwin
@initial_buffer = $curbuf
@match_window = MatchWindow.new \
:prompt => @prompt,
:match_window_at_top => get_bool('g:CommandTMatchWindowAtTop'),
:match_window_reverse => get_bool('g:CommandTMatchWindowReverse')
@focus = @prompt
@prompt.focus
register_for_key_presses
clear # clears prompt and lists matches
end
def max_height
@max_height ||= get_number('g:CommandTMaxHeight') || 0
end
def exists? name
::VIM::evaluate("exists(\"#{name}\")").to_i != 0
end
def get_number name
exists?(name) ? ::VIM::evaluate("#{name}").to_i : nil
end
def get_bool name
exists?(name) ? ::VIM::evaluate("#{name}").to_i != 0 : nil
end
def get_string name
exists?(name) ? ::VIM::evaluate("#{name}").to_s : nil
end
# expect a string or a list of strings
def get_list_or_string name
return nil unless exists?(name)
list_or_string = ::VIM::evaluate("#{name}")
if list_or_string.kind_of?(Array)
list_or_string.map { |item| item.to_s }
else
list_or_string.to_s
end
end
# Backslash-escape space, \, |, %, #, "
def sanitize_path_string str
# for details on escaping command-line mode arguments see: :h :
# (that is, help on ":") in the Vim documentation.
str.gsub(/[ \\|%#"]/, '\\\\\0')
end
def default_open_command
if !get_bool('&hidden') && get_bool('&modified')
'sp'
else
'e'
end
end
def ensure_appropriate_window_selection
# normally we try to open the selection in the current window, but there
# is one exception:
#
# - we don't touch any "unlisted" buffer with buftype "nofile" (such as
# NERDTree or MiniBufExplorer); this is to avoid things like the "Not
# enough room" error which occurs when trying to open in a split in a
# shallow (potentially 1-line) buffer like MiniBufExplorer is current
#
# Other "unlisted" buffers, such as those with buftype "help" are treated
# normally.
initial = $curwin
while true do
break unless ::VIM::evaluate('&buflisted').to_i == 0 &&
::VIM::evaluate('&buftype').to_s == 'nofile'
::VIM::command 'wincmd w' # try next window
break if $curwin == initial # have already tried all
end
end
def open_selection selection, options = {}
command = options[:command] || default_open_command
selection = File.expand_path selection, @path
selection = relative_path_under_working_directory selection
selection = sanitize_path_string selection
ensure_appropriate_window_selection
::VIM::command "silent #{command} #{selection}"
end
def map key, function, param = nil
::VIM::command "noremap <silent> <buffer> #{key} " \
":call CommandT#{function}(#{param})<CR>"
end
def xterm?
!!(::VIM::evaluate('&term') =~ /\Axterm/)
end
def vt100?
!!(::VIM::evaluate('&term') =~ /\Avt100/)
end
def register_for_key_presses
# "normal" keys (interpreted literally)
numbers = ('0'..'9').to_a.join
lowercase = ('a'..'z').to_a.join
uppercase = lowercase.upcase
punctuation = '<>`@#~!"$%&/()=+*-_.,;:?\\\'{}[] ' # and space
(numbers + lowercase + uppercase + punctuation).each_byte do |b|
map "<Char-#{b}>", 'HandleKey', b
end
# "special" keys (overridable by settings)
{ 'Backspace' => '<BS>',
'Delete' => '<Del>',
'AcceptSelection' => '<CR>',
'AcceptSelectionSplit' => ['<C-CR>', '<C-s>'],
'AcceptSelectionTab' => '<C-t>',
'AcceptSelectionVSplit' => '<C-v>',
'ToggleFocus' => '<Tab>',
'Cancel' => ['<C-c>', '<Esc>'],
'SelectNext' => ['<C-n>', '<C-j>', '<Down>'],
'SelectPrev' => ['<C-p>', '<C-k>', '<Up>'],
'Clear' => '<C-u>',
'CursorLeft' => ['<Left>', '<C-h>'],
'CursorRight' => ['<Right>', '<C-l>'],
'CursorEnd' => '<C-e>',
'CursorStart' => '<C-a>' }.each do |key, value|
if override = get_list_or_string("g:CommandT#{key}Map")
[override].flatten.each do |mapping|
map mapping, key
end
else
[value].flatten.each do |mapping|
map mapping, key unless mapping == '<Esc>' && (xterm? || vt100?)
end
end
end
end
# Returns the desired maximum number of matches, based on available
# vertical space and the g:CommandTMaxHeight option.
def match_limit
limit = VIM::Screen.lines - 5
limit = 1 if limit < 0
limit = [limit, max_height].min if max_height > 0
limit
end
def list_matches
matches = @active_finder.sorted_matches_for @prompt.abbrev, :limit => match_limit
@match_window.matches = matches
end
def buffer_finder
@buffer_finder ||= CommandT::BufferFinder.new
end
def file_finder
@file_finder ||= CommandT::FileFinder.new nil,
:max_depth => get_number('g:CommandTMaxDepth'),
:max_files => get_number('g:CommandTMaxFiles'),
:max_caches => get_number('g:CommandTMaxCachedDirectories'),
:always_show_dot_files => get_bool('g:CommandTAlwaysShowDotFiles'),
:never_show_dot_files => get_bool('g:CommandTNeverShowDotFiles'),
:scan_dot_directories => get_bool('g:CommandTScanDotDirectories'),
:cache_index_to_disk => get_bool('g:CommandTCacheIndexToDisk'),
:cache_filename => get_string('g:CommandTCacheFileName')
end
def jump_finder
@jump_finder ||= CommandT::JumpFinder.new
end
end # class Controller
end # module commandT
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