overleaf/services/web/public/js/ace/keyboard/vim.js

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2014-02-12 05:23:40 -05:00
/* ***** 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 ***** */
define(function(require, exports, module) {
"use strict";
var cmds = require("./vim/commands");
var coreCommands = cmds.coreCommands;
var util = require("./vim/maps/util");
var useragent = require("../lib/useragent");
var startCommands = {
"i": {
command: coreCommands.start
},
"I": {
command: coreCommands.startBeginning
},
"a": {
command: coreCommands.append
},
"A": {
command: coreCommands.appendEnd
},
"ctrl-f": {
command: "gotopagedown"
},
"ctrl-b": {
command: "gotopageup"
}
};
exports.handler = {
$id: "ace/keyboard/vim",
// workaround for j not repeating with `defaults write -g ApplePressAndHoldEnabled -bool true`
handleMacRepeat: function(data, hashId, key) {
if (hashId == -1) {
// record key
data.inputChar = key;
data.lastEvent = "input";
} else if (data.inputChar && data.$lastHash == hashId && data.$lastKey == key) {
// check for repeated keypress
if (data.lastEvent == "input") {
data.lastEvent = "input1";
} else if (data.lastEvent == "input1") {
// simulate textinput
return true;
}
} else {
// reset
data.$lastHash = hashId;
data.$lastKey = key;
data.lastEvent = "keypress";
}
},
// on mac, with some keyboard layouts (e.g swedish) ^ starts composition, we don't need it in normal mode
updateMacCompositionHandlers: function(editor, enable) {
var onCompositionUpdateOverride = function(text) {
if (util.currentMode !== "insert") {
var el = this.textInput.getElement();
el.blur();
el.focus();
el.value = text;
} else {
this.onCompositionUpdateOrig(text);
}
};
var onCompositionStartOverride = function(text) {
if (util.currentMode === "insert") {
this.onCompositionStartOrig(text);
}
}
if (enable) {
if (!editor.onCompositionUpdateOrig) {
editor.onCompositionUpdateOrig = editor.onCompositionUpdate;
editor.onCompositionUpdate = onCompositionUpdateOverride;
editor.onCompositionStartOrig = editor.onCompositionStart;
editor.onCompositionStart = onCompositionStartOverride;
}
} else {
if (editor.onCompositionUpdateOrig) {
editor.onCompositionUpdate = editor.onCompositionUpdateOrig;
editor.onCompositionUpdateOrig = null;
editor.onCompositionStart = editor.onCompositionStartOrig;
editor.onCompositionStartOrig = null;
}
}
},
handleKeyboard: function(data, hashId, key, keyCode, e) {
// ignore command keys (shift, ctrl etc.)
if (hashId != 0 && (key == "" || key == "\x00"))
return null;
var editor = data.editor;
if (hashId == 1)
key = "ctrl-" + key;
if (key == "ctrl-c") {
if (!useragent.isMac && editor.getCopyText()) {
editor.once("copy", function() {
if (data.state == "start")
coreCommands.stop.exec(editor);
else
editor.selection.clearSelection();
});
return {command: "null", passEvent: true};
}
return {command: coreCommands.stop};
} else if ((key == "esc" && hashId == 0) || key == "ctrl-[") {
return {command: coreCommands.stop};
} else if (data.state == "start") {
if (useragent.isMac && this.handleMacRepeat(data, hashId, key)) {
hashId = -1;
key = data.inputChar;
}
if (hashId == -1 || hashId == 1 || hashId == 0 && key.length > 1) {
if (cmds.inputBuffer.idle && startCommands[key])
return startCommands[key];
cmds.inputBuffer.push(editor, key);
return {command: "null", passEvent: false};
} // if no modifier || shift: wait for input.
else if (key.length == 1 && (hashId == 0 || hashId == 4)) {
return {command: "null", passEvent: true};
} else if (key == "esc" && hashId == 0) {
return {command: coreCommands.stop};
}
} else {
if (key == "ctrl-w") {
return {command: "removewordleft"};
}
}
},
attach: function(editor) {
editor.on("click", exports.onCursorMove);
if (util.currentMode !== "insert")
cmds.coreCommands.stop.exec(editor);
editor.$vimModeHandler = this;
this.updateMacCompositionHandlers(editor, true);
},
detach: function(editor) {
editor.removeListener("click", exports.onCursorMove);
util.noMode(editor);
util.currentMode = "normal";
this.updateMacCompositionHandlers(editor, false);
},
actions: cmds.actions,
getStatusText: function() {
if (util.currentMode == "insert")
return "INSERT";
if (util.onVisualMode)
return (util.onVisualLineMode ? "VISUAL LINE " : "VISUAL ") + cmds.inputBuffer.status;
return cmds.inputBuffer.status;
}
};
exports.onCursorMove = function(e) {
cmds.onCursorMove(e.editor, e);
exports.onCursorMove.scheduled = false;
};
});