next unless c
bm.erase_flash
- unless bm.handle_input(c)
- x = global_keymap.action_for c
- case x
- when :quit
- break if bm.kill_all_buffers_safely
- when :help
- curmode = bm.focus_buf.mode
- bm.spawn_unless_exists("<help for #{curmode.name}>") { HelpMode.new curmode, global_keymap }
- when :roll_buffers
- bm.roll_buffers
- when :roll_buffers_backwards
- bm.roll_buffers_backwards
- when :kill_buffer
- bm.kill_buffer_safely bm.focus_buf
- when :list_buffers
- bm.spawn_unless_exists("Buffer List") { BufferListMode.new }
- when :list_contacts
- b, new = bm.spawn_unless_exists("Contact List") { ContactListMode.new }
- b.mode.load_in_background if new
- when :search
- query = BufferManager.ask :search, "search all messages: "
- next unless query && query !~ /^\s*$/
- SearchResultsMode.spawn_from_query query
- when :list_labels
- labels = LabelManager.listable_labels.map { |l| LabelManager.string_for l }
- user_label = bm.ask_with_completions :label, "Show threads with label (enter for listing): ", labels
- unless user_label.nil?
- if user_label.empty?
- bm.spawn_unless_exists("Label list") { LabelListMode.new } if user_label && user_label.empty?
- else
- LabelSearchResultsMode.spawn_nicely user_label
- end
+ action =
+ begin
+ if bm.handle_input c
+ :nothing
+ else
+ bm.resolve_input_with_keymap c, global_keymap
end
- when :compose
- ComposeMode.spawn_nicely
- when :poll
- reporting_thread("user-invoked poll") { PollManager.poll }
- when :recall_draft
- case Index.num_results_for :label => :draft
- when 0
- bm.flash "No draft messages."
- when 1
- m = nil
- Index.each_id_by_date(:label => :draft) { |mid, builder| m = builder.call }
- r = ResumeMode.new(m)
- BufferManager.spawn "Edit message", r
- r.edit_message
+ rescue InputSequenceAborted
+ :nothing
+ end
+
+ case action
+ when :quit
+ break if bm.kill_all_buffers_safely
+ when :help
+ curmode = bm.focus_buf.mode
+ bm.spawn_unless_exists("<help for #{curmode.name}>") { HelpMode.new curmode, global_keymap }
+ when :roll_buffers
+ bm.roll_buffers
+ when :roll_buffers_backwards
+ bm.roll_buffers_backwards
+ when :kill_buffer
+ bm.kill_buffer_safely bm.focus_buf
+ when :list_buffers
+ bm.spawn_unless_exists("Buffer List") { BufferListMode.new }
+ when :list_contacts
+ b, new = bm.spawn_unless_exists("Contact List") { ContactListMode.new }
+ b.mode.load_in_background if new
+ when :search
+ query = BufferManager.ask :search, "search all messages: "
+ next unless query && query !~ /^\s*$/
+ SearchResultsMode.spawn_from_query query
+ when :list_labels
+ labels = LabelManager.listable_labels.map { |l| LabelManager.string_for l }
+ user_label = bm.ask_with_completions :label, "Show threads with label (enter for listing): ", labels
+ unless user_label.nil?
+ if user_label.empty?
+ bm.spawn_unless_exists("Label list") { LabelListMode.new } if user_label && user_label.empty?
else
- b, new = BufferManager.spawn_unless_exists("All drafts") { LabelSearchResultsMode.new [:draft] }
- b.mode.load_threads :num => b.content_height if new
+ LabelSearchResultsMode.spawn_nicely user_label
end
- when :nothing
- when :redraw
- bm.completely_redraw_screen
+ end
+ when :compose
+ ComposeMode.spawn_nicely
+ when :poll
+ reporting_thread("user-invoked poll") { PollManager.poll }
+ when :recall_draft
+ case Index.num_results_for :label => :draft
+ when 0
+ bm.flash "No draft messages."
+ when 1
+ m = nil
+ Index.each_id_by_date(:label => :draft) { |mid, builder| m = builder.call }
+ r = ResumeMode.new(m)
+ BufferManager.spawn "Edit message", r
+ r.edit_message
else
- bm.flash "Unknown keypress '#{c.to_character}' for #{bm.focus_buf.mode.name}."
+ b, new = BufferManager.spawn_unless_exists("All drafts") { LabelSearchResultsMode.new [:draft] }
+ b.mode.load_threads :num => b.content_height if new
end
+ when :nothing, InputSequenceAborted
+ when :redraw
+ bm.completely_redraw_screen
+ else
+ bm.flash "Unknown keypress '#{c.to_character}' for #{bm.focus_buf.mode.name}."
end
bm.draw_screen
module Redwood
+class InputSequenceAborted < StandardError; end
+
class Buffer
attr_reader :mode, :x, :y, :width, :height, :title
bool_reader :dirty
c = Ncurses.nonblocking_getch
next unless c # getch timeout
break if c == Ncurses::KEY_CANCEL
- mode.handle_input c
+ begin
+ mode.handle_input c
+ rescue InputSequenceAborted # do nothing
+ end
draw_screen
erase_flash
end
end
end
+ ## turns an input keystroke into an action symbol. returns the action
+ ## if found, nil if not found, and throws InputSequenceAborted if
+ ## the user aborted a multi-key sequence. (Because each of those cases
+ ## should be handled differently.)
+ ##
+ ## this is in BufferManager because multi-key sequences require prompting.
+ def resolve_input_with_keymap c, keymap
+ action, text = keymap.action_for c
+ while action.is_a? Keymap # multi-key commands, prompt
+ key = BufferManager.ask_getch text
+ unless key # user canceled, abort
+ erase_flash
+ raise InputSequenceAborted
+ end
+ action, text = action.action_for(key) if action.has_key?(key)
+ end
+ action
+ end
+
def minibuf_lines
@minibuf_mutex.synchronize do
[(@flash ? 1 : 0) +
yield self if block_given?
end
- def keysym_to_keycode k
+ def self.keysym_to_keycode k
case k
when :down: Curses::KEY_DOWN
when :up: Curses::KEY_UP
end
end
- def keysym_to_string k
+ def self.keysym_to_string k
case k
when :down: "<down arrow>"
when :up: "<up arrow>"
entry = [action, help, keys]
@order << entry
keys.each do |k|
- kc = keysym_to_keycode k
- raise ArgumentError, "key #{k} already defined (action #{action})" if @map.include? kc
+ kc = Keymap.keysym_to_keycode k
+ raise ArgumentError, "key '#{k}' already defined (action #{action})" if @map.include? kc
@map[kc] = entry
end
end
+ def add_multi prompt, key
+ submap = Keymap.new
+ add submap, prompt, key
+ yield submap
+ end
+
def action_for kc
action, help, keys = @map[kc]
- action
+ [action, help]
end
+ def has_key? k; @map[k] end
+
def keysyms; @map.values.map { |action, help, keys| keys }.flatten; end
- def help_text except_for={}
- lines = @order.map do |action, help, keys|
+ def help_lines except_for={}, prefix=""
+ lines = [] # :(
+ @order.each do |action, help, keys|
valid_keys = keys.select { |k| !except_for[k] }
next if valid_keys.empty?
- [valid_keys.map { |k| keysym_to_string k }.join(", "), help]
+ case action
+ when Symbol
+ lines << [valid_keys.map { |k| prefix + Keymap.keysym_to_string(k) }.join(", "), help]
+ when Keymap
+ lines += action.help_lines({}, prefix + Keymap.keysym_to_string(keys.first))
+ end
end.compact
+ lines
+ end
+
+ def help_text except_for={}
+ lines = help_lines except_for
llen = lines.max_of { |a, b| a.length }
lines.map { |a, b| sprintf " %#{llen}s : %s", a, b }.join("\n")
end
@buffer = nil
end
- ## turns an input keystroke into an action symbol
def resolve_input c
- ## try all keymaps in order of age
- action = nil
- klass = self.class
-
- ancestors.each do |klass|
- action = @@keymaps.member?(klass) && @@keymaps[klass].action_for(c)
+ ancestors.each do |klass| # try all keymaps in order of ancestry
+ next unless @@keymaps.member?(klass)
+ action = BufferManager.resolve_input_with_keymap c, @@keymaps[klass]
return action if action
end
-
nil
end
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