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ymacs-keymap-emacs.js
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ymacs-keymap-emacs.js
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//> This file is part of Ymacs, an Emacs-like editor for the Web
//> http://www.ymacs.org/
//>
//> Copyright (c) 2009-2012, Mihai Bazon, Dynarch.com. All rights reserved.
//>
//> Redistribution and use in source and binary forms, with or without
//> modification, are permitted provided that the following conditions are
//> met:
//>
//> * Redistributions of source code must retain the above copyright
//> notice, this list of conditions and the following disclaimer.
//>
//> * 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.
//>
//> * Neither the name of Dynarch.com nor the names of its contributors
//> may be used to endorse or promote products derived from this
//> software without specific prior written permission.
//>
//> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “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 HOLDER 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 ymacs-keymap.js
// This is the default keymap, as configured in
// Ymacs_Buffer::makeDefaultKeymap. It follows closely the standard
// Emacs keybindings, with some small deviations that match my taste
// (search for "my stuff" below).
// It would be nice to have more options, such as an Eclipse keymap,
// or Visual Studio -- but I'm not familiar with any of them.
// Contributions welcome.
// A keymap inherits from Ymacs_Keymap and should define its bindings
// in D.KEYS. They can also define a defaultHandler property to take
// whatever action they consider necessary -- for example the Isearch
// keymap will, by default, print the entered character in the
// minibuffer and trigger a search action. Isearch mode is almost
// completely defined in a keymap -- with the minor note that
// isearch_forward and isearch_backward are assigned below to key
// combinations; once pressed, they will push the Isearch keymap onto
// the buffer's keymap stack, and it will be used until isearch is
// ended.
/* KEY DEFINITIONS. A key is generally defined in standard Emacs
notation, with the following notes:
- it is possible to define multiple keys at once for the same
operation, by using the "&&" combination (separate with spaces
from the actual keys)
- some special characters are named literally; their names contain
more than one character. The available names are defined in
DlKeyboard (see keyboard.js in DynarchLIB). Examples:
ARROW_RIGHT, PAGE_UP, etc. but also SPACE and DASH.
Normally you would define commands using Ymacs_Buffer.newCommands
(see ymacs-commands.js) and specify the command name for key
bindings, but you can specify a function as well, if you want:
"C-8": function() {
alert("You pressed CTRL-8");
}
It is advised to define commands for more than simple cases, for
two reasons:
1. they can be used for "non-interactive" calls too
2. the command name is saved in this.currentCommand /
this.previousCommand, which is useful in a number of cases.
*/
DEFINE_SINGLETON("Ymacs_Keymap_Emacs", Ymacs_Keymap, function(D, P){
var TMPL_INFO = String.template(
"<table>",
"<tr><td style='text-align: right; font-weight: bold'>Char:</td><td><tt> $ch </tt></td></tr>",
"<tr><td style='text-align: right; font-weight: bold'>Char code:</td><td> $code / 0x$codeHex </td></tr>",
"<tr><td style='text-align: right; font-weight: bold'>Position:</td><td> $point </td></tr>",
"<tr><td style='text-align: right; font-weight: bold'>Mark:</td><td> $mark </td></tr>",
"<tr><td style='text-align: right; font-weight: bold'>Buffer size:</td><td> $sizeKB </td></tr>",
"</table>"
);
D.KEYS = {
// movement
"ARROW_UP && C-p" : "backward_line",
"ARROW_DOWN && C-n" : "forward_line",
"ARROW_LEFT && C-b" : "backward_char",
"ARROW_RIGHT && C-f" : "forward_char",
"HOME" : "beginning_of_indentation_or_line",
"END && C-e" : "end_of_line",
"C-a" : "beginning_of_line",
"C-HOME && M-<" : "beginning_of_buffer",
"C-END && M->" : "end_of_buffer",
"C-ARROW_RIGHT && M-f" : "forward_word",
"C-ARROW_LEFT && M-b" : "backward_word",
"C-ARROW_DOWN" : "forward_paragraph",
"C-ARROW_UP" : "backward_paragraph",
"C-l" : "recenter_top_bottom",
"PAGE_UP && M-v" : "scroll_up",
"PAGE_DOWN && C-v" : "scroll_down",
// transient mark
"S-ARROW_UP && S-C-p" : "backward_line_mark",
"S-ARROW_DOWN && S-C-n" : "forward_line_mark",
"S-ARROW_LEFT && S-C-b" : "backward_char_mark",
"S-ARROW_RIGHT && S-C-f" : "forward_char_mark",
"S-C-ARROW_RIGHT && S-M-f" : "forward_word_mark",
"S-C-ARROW_LEFT && S-M-b" : "backward_word_mark",
"S-C-ARROW_DOWN" : "forward_paragraph_mark",
"S-C-ARROW_UP" : "backward_paragraph_mark",
"S-HOME" : "beginning_of_indentation_or_line_mark",
"S-C-a" : "beginning_of_line_mark",
"S-END" : "end_of_line_mark",
"S-C-HOME" : "beginning_of_buffer_mark",
"S-C-END" : "end_of_buffer_mark",
// basic editing
"BACKSPACE" : "backward_delete_char",
"DELETE && C-d" : "delete_char",
"ENTER && C-m" : "newline",
"M-d && C-DELETE" : "kill_word",
"C-BACKSPACE && M-BACKSPACE && M-DELETE" : "backward_kill_word",
"C-k" : "kill_line",
"C-y && S-INSERT" : "yank",
"M-y" : "yank_pop",
"C-SPACE" : "set_mark_command",
"C-x C-x" : "exchange_point_and_mark",
"C-w" : "kill_region",
"M-t" : "transpose_words",
"C-t" : "transpose_chars",
"C-x C-t" : "transpose_lines",
"M-w" : "copy_region_as_kill",
"M-c" : "capitalize_word",
"M-u" : "upcase_word",
"M-l" : "downcase_word",
"F11" : "nuke_trailing_whitespace",
"TAB" : "indent_line",
"C-M-\\" : "indent_region",
"M-q" : "fill_paragraph",
"C-/ && C-x u && C-_ && C-z" : "undo",
"INSERT" : "overwrite_mode",
"M-s" : "center_line",
"M-/" : "dabbrev_expand",
"C-s" : "isearch_forward",
"C-r" : "isearch_backward",
"M-C-s" : "isearch_forward_regexp",
"M-C-r" : "isearch_backward_regexp",
"C-u" : "universal_argument",
"M-g" : "goto_line",
"C-x h" : "mark_whole_buffer",
"C-g" : "keyboard_quit",
"M-^" : "delete_indentation",
// vertical editing
"C-x r t" : "string_rectangle",
"C-x r c" : "clear_rectangle",
"C-x r k" : "kill_rectangle",
"C-x r y" : "yank_rectangle",
// buffers
"C-x C-ARROW_RIGHT && C-x ARROW_RIGHT && C-TAB" : "next_buffer",
"C-x C-ARROW_LEFT && C-x ARROW_LEFT && C-S-TAB" : "previous_buffer",
"C-x b" : "switch_to_buffer",
"C-x k" : "kill_buffer",
// frames
"C-x 0" : "delete_frame",
"C-x 1" : "delete_other_frames",
"C-x 2" : "split_frame_vertically",
"C-x 3" : "split_frame_horizontally",
"C-x o" : "other_frame",
"C-x l" : "toggle_line_numbers",
// eval
"M-x" : "execute_extended_command",
// necessary evil
"C-S-y" : "yank_from_operating_system",
"M-S-w" : "copy_for_operating_system",
"C-S-w" : "kill_for_operating_system",
// my stuff, sorry if these have different meanings in the standard Emacs keys
"M-S-y" : "yank_shift", // that's the reverse of yank_shift
"C-c /" : "close_last_xml_tag",
"S-BACKSPACE" : "backward_delete_whitespace",
"S-DELETE" : "delete_whitespace",
"C-M-d" : "delete_region_or_line",
"M-ENTER" : "start_next_paragraph",
"M-S-q" : "fill_paragraph_no_prefix",
"C-M-|" : "cperl_lineup",
"C-F4" : "kill_buffer",
"M-ARROW_LEFT" : [ "windmove", "left" ],
"M-ARROW_RIGHT" : [ "windmove", "right" ],
"M-ARROW_UP" : [ "windmove", "up" ],
"M-ARROW_DOWN" : [ "windmove", "down" ],
// others
"C-x =": function() {
var ch = this.charAt(), chname = ch;
if (ch == " ")
chname = "<SPACE>";
else if (ch == "\n")
chname = "<NEWLINE>";
else if (ch == "-")
chname = "<DASH>";
this.signalInfo(TMPL_INFO({
ch : chname.htmlEscape(),
code : ch.charCodeAt(0),
codeHex : ch.charCodeAt().hex(),
point : this.point(),
mark : this.markMarker.getPosition(),
size : this.getCodeSize(),
sizeKB : this.getCodeSize().formatBytes(2)
}), true);
}
};
P.defaultHandler = [ "self_insert_command" ];
});
DEFINE_SINGLETON("Ymacs_Keymap_UniversalArgument", Ymacs_Keymap, function(D, P){
P.defaultHandler = [ Ymacs_Interactive("^", function(){
var ev = this.interactiveEvent(),
ch = String.fromCharCode(ev.charCode),
prefix = this.getPrefixArg(true);
if (ev.charCode && (/^[0-9]$/.test(ch) || (ch === "-" && prefix === "")) && !ev.altKey && !ev.ctrlKey) {
prefix += ch;
this.setPrefixArg(prefix);
if (!this.isMinibuffer) {
this.whenMinibuffer(function(mb){
mb.cmd("insert", " ", ch);
});
}
return true;
}
this.popKeymap(Ymacs_Keymap_UniversalArgument());
return false;
}) ];
P.attached = function(buffer) {
buffer.setPrefixArg("");
};
});