gitlabhq/vendor/assets/javascripts/ace-src-noconflict/keybinding-emacs.js

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2012-10-09 19:11:49 +02:00
/* ***** BEGIN LICENSE BLOCK *****
* Distributed under the BSD license:
*
* Copyright (c) 2010, Ajax.org B.V.
* 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 Ajax.org B.V. 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 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 AJAX.ORG B.V. 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.
*
* ***** END LICENSE BLOCK ***** */
ace.define('ace/keyboard/emacs', ['require', 'exports', 'module' , 'ace/lib/dom', 'ace/keyboard/hash_handler', 'ace/lib/keys'], function(require, exports, module) {
var dom = require("../lib/dom");
var screenToTextBlockCoordinates = function(pageX, pageY) {
var canvasPos = this.scroller.getBoundingClientRect();
var col = Math.floor(
(pageX + this.scrollLeft - canvasPos.left - this.$padding - dom.getPageScrollLeft()) / this.characterWidth
);
var row = Math.floor(
(pageY + this.scrollTop - canvasPos.top - dom.getPageScrollTop()) / this.lineHeight
);
return this.session.screenToDocumentPosition(row, col);
};
var HashHandler = require("./hash_handler").HashHandler;
exports.handler = new HashHandler();
var initialized = false;
exports.handler.attach = function(editor) {
if (!initialized) {
initialized = true;
dom.importCssString('\
.emacs-mode .ace_cursor{\
border: 2px rgba(50,250,50,0.8) solid!important;\
-moz-box-sizing: border-box!important;\
box-sizing: border-box!important;\
background-color: rgba(0,250,0,0.9);\
opacity: 0.5;\
}\
.emacs-mode .ace_cursor.ace_hidden{\
opacity: 1;\
background-color: transparent;\
}\
.emacs-mode .ace_cursor.ace_overwrite {\
opacity: 1;\
background-color: transparent;\
border-width: 0 0 2px 2px !important;\
}\
.emacs-mode .ace_text-layer {\
z-index: 4\
}\
.emacs-mode .ace_cursor-layer {\
z-index: 2\
}', 'emacsMode'
);
}
editor.renderer.screenToTextCoordinates = screenToTextBlockCoordinates;
editor.setStyle("emacs-mode");
};
exports.handler.detach = function(editor) {
delete editor.renderer.screenToTextCoordinates;
editor.unsetStyle("emacs-mode");
};
var keys = require("../lib/keys").KEY_MODS;
var eMods = {
C: "ctrl", S: "shift", M: "alt"
};
["S-C-M", "S-C", "S-M", "C-M", "S", "C", "M"].forEach(function(c) {
var hashId = 0;
c.split("-").forEach(function(c){
hashId = hashId | keys[eMods[c]];
});
eMods[hashId] = c.toLowerCase() + "-";
});
exports.handler.bindKey = function(key, command) {
if (!key)
return;
var ckb = this.commmandKeyBinding;
key.split("|").forEach(function(keyPart) {
keyPart = keyPart.toLowerCase();
ckb[keyPart] = command;
keyPart = keyPart.split(" ")[0];
if (!ckb[keyPart])
ckb[keyPart] = "null";
}, this);
};
exports.handler.handleKeyboard = function(data, hashId, key, keyCode) {
if (hashId == -1) {
if (data.count) {
var str = Array(data.count + 1).join(key);
data.count = null;
return {command: "insertstring", args: str};
}
}
if (key == "\x00")
return;
var modifier = eMods[hashId];
if (modifier == "c-" || data.universalArgument) {
var count = parseInt(key[key.length - 1]);
if (count) {
data.count = count;
return {command: "null"};
}
}
data.universalArgument = false;
if (modifier)
key = modifier + key;
if (data.keyChain)
key = data.keyChain += " " + key;
var command = this.commmandKeyBinding[key];
data.keyChain = command == "null" ? key : "";
if (!command)
return;
if (command == "null")
return {command: "null"};
if (command == "universalArgument") {
data.universalArgument = true;
return {command: "null"};
}
if (typeof command != "string") {
var args = command.args;
command = command.command;
}
if (typeof command == "string") {
command = this.commands[command] || data.editor.commands.commands[command];
}
if (!command.readonly && !command.isYank)
data.lastCommand = null;
if (data.count) {
var count = data.count;
data.count = 0;
return {
args: args,
command: {
exec: function(editor, args) {
for (var i = 0; i < count; i++)
command.exec(editor, args);
}
}
};
}
return {command: command, args: args};
};
exports.emacsKeys = {
// movement
"Up|C-p" : "golineup",
"Down|C-n" : "golinedown",
"Left|C-b" : "gotoleft",
"Right|C-f" : "gotoright",
"C-Left|M-b" : "gotowordleft",
"C-Right|M-f" : "gotowordright",
"Home|C-a" : "gotolinestart",
"End|C-e" : "gotolineend",
"C-Home|S-M-,": "gotostart",
"C-End|S-M-." : "gotoend",
// selection
"S-Up|S-C-p" : "selectup",
"S-Down|S-C-n" : "selectdown",
"S-Left|S-C-b" : "selectleft",
"S-Right|S-C-f" : "selectright",
"S-C-Left|S-M-b" : "selectwordleft",
"S-C-Right|S-M-f" : "selectwordright",
"S-Home|S-C-a" : "selecttolinestart",
"S-End|S-C-e" : "selecttolineend",
"S-C-Home" : "selecttostart",
"S-C-End" : "selecttoend",
"C-l" : "recenterTopBottom",
"M-s" : "centerselection",
"M-g": "gotoline",
"C-x C-p": "selectall",
// todo fix these
"C-Down": "gotopagedown",
"C-Up": "gotopageup",
"PageDown|C-v": "gotopagedown",
"PageUp|M-v": "gotopageup",
"S-C-Down": "selectpagedown",
"S-C-Up": "selectpageup",
"C-s": "findnext",
"C-r": "findprevious",
"M-C-s": "findnext",
"M-C-r": "findprevious",
"S-M-5": "replace",
// basic editing
"Backspace": "backspace",
"Delete|C-d": "del",
"Return|C-m": {command: "insertstring", args: "\n"}, // "newline"
"C-o": "splitline",
"M-d|C-Delete": {command: "killWord", args: "right"},
"C-Backspace|M-Backspace|M-Delete": {command: "killWord", args: "left"},
"C-k": "killLine",
"C-y|S-Delete": "yank",
"M-y": "yankRotate",
"C-g": "keyboardQuit",
"C-w": "killRegion",
"M-w": "killRingSave",
"C-Space": "setMark",
"C-x C-x": "exchangePointAndMark",
"C-t": "transposeletters",
"M-u": "touppercase",
"M-l": "tolowercase",
"M-/": "autocomplete",
"C-u": "universalArgument",
"M-;": "togglecomment",
"C-/|C-x u|S-C--|C-z": "undo",
"S-C-/|S-C-x u|C--|S-C-z": "redo", //infinite undo?
// vertical editing
"C-x r": "selectRectangularRegion"
// todo
// "M-x" "C-x C-t" "M-t" "M-c" "F11" "C-M- "M-q"
};
exports.handler.bindKeys(exports.emacsKeys);
exports.handler.addCommands({
recenterTopBottom: function(editor) {
var renderer = editor.renderer;
var pos = renderer.$cursorLayer.getPixelPosition();
var h = renderer.$size.scrollerHeight - renderer.lineHeight;
var scrollTop = renderer.scrollTop;
if (Math.abs(pos.top - scrollTop) < 2) {
scrollTop = pos.top - h;
} else if (Math.abs(pos.top - scrollTop - h * 0.5) < 2) {
scrollTop = pos.top;
} else {
scrollTop = pos.top - h * 0.5;
}
editor.session.setScrollTop(scrollTop);
},
selectRectangularRegion: function(editor) {
editor.multiSelect.toggleBlockSelection();
},
setMark: function() {
},
exchangePointAndMark: {
exec: function(editor) {
var range = editor.selection.getRange();
editor.selection.setSelectionRange(range, !editor.selection.isBackwards());
},
readonly: true,
multiselectAction: "forEach"
},
killWord: {
exec: function(editor, dir) {
editor.clearSelection();
if (dir == "left")
editor.selection.selectWordLeft();
else
editor.selection.selectWordRight();
var range = editor.getSelectionRange();
var text = editor.session.getTextRange(range);
exports.killRing.add(text);
editor.session.remove(range);
editor.clearSelection();
},
multiselectAction: "forEach"
},
killLine: function(editor) {
editor.selection.selectLine();
var range = editor.getSelectionRange();
var text = editor.session.getTextRange(range);
exports.killRing.add(text);
editor.session.remove(range);
editor.clearSelection();
},
yank: function(editor) {
editor.onPaste(exports.killRing.get());
editor.keyBinding.$data.lastCommand = "yank";
},
yankRotate: function(editor) {
if (editor.keyBinding.$data.lastCommand != "yank")
return;
editor.undo();
editor.onPaste(exports.killRing.rotate());
editor.keyBinding.$data.lastCommand = "yank";
},
killRegion: function(editor) {
exports.killRing.add(editor.getCopyText());
editor.commands.byName.cut.exec(editor);
},
killRingSave: function(editor) {
exports.killRing.add(editor.getCopyText());
}
});
var commands = exports.handler.commands;
commands.yank.isYank = true;
commands.yankRotate.isYank = true;
exports.killRing = {
$data: [],
add: function(str) {
str && this.$data.push(str);
if (this.$data.length > 30)
this.$data.shift();
},
get: function() {
return this.$data[this.$data.length - 1] || "";
},
pop: function() {
if (this.$data.length > 1)
this.$data.pop();
return this.get();
},
rotate: function() {
this.$data.unshift(this.$data.pop());
return this.get();
}
};
});