etherpad-lite/static/js/ace.js

339 lines
11 KiB
JavaScript

/**
* This code is mostly from the old Etherpad. Please help us to comment this code.
* This helps other people to understand this code better and helps them to improve it.
* TL;DR COMMENTS ON THIS FILE ARE HIGHLY APPRECIATED
*/
/**
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// requires: top
// requires: plugins
// requires: undefined
Ace2Editor.registry = {
nextId: 1
};
var plugins = require('/plugins').plugins;
function Ace2Editor()
{
var ace2 = Ace2Editor;
var editor = {};
var info = {
editor: editor,
id: (ace2.registry.nextId++)
};
var loaded = false;
var actionsPendingInit = [];
function pendingInit(func, optDoNow)
{
return function()
{
var that = this;
var args = arguments;
var action = function()
{
func.apply(that, args);
}
if (optDoNow)
{
optDoNow.apply(that, args);
}
if (loaded)
{
action();
}
else
{
actionsPendingInit.push(action);
}
};
}
function doActionsPendingInit()
{
$.each(actionsPendingInit, function(i,fn){
fn()
});
actionsPendingInit = [];
}
ace2.registry[info.id] = info;
// The following functions (prefixed by 'ace_') are exposed by editor, but
// execution is delayed until init is complete
var aceFunctionsPendingInit = ['importText', 'importAText', 'focus',
'setEditable', 'getFormattedCode', 'setOnKeyPress', 'setOnKeyDown',
'setNotifyDirty', 'setProperty', 'setBaseText', 'setBaseAttributedText',
'applyChangesToBase', 'applyPreparedChangesetToBase',
'setUserChangeNotificationCallback', 'setAuthorInfo',
'setAuthorSelectionRange', 'callWithAce', 'execCommand', 'replaceRange'];
$.each(aceFunctionsPendingInit, function(i,fnName){
var prefix = 'ace_';
var name = prefix + fnName;
editor[fnName] = pendingInit(function(){
info[prefix + fnName].apply(this, arguments);
});
});
editor.exportText = function()
{
if (!loaded) return "(awaiting init)\n";
return info.ace_exportText();
};
editor.getFrame = function()
{
return info.frame || null;
};
editor.getDebugProperty = function(prop)
{
return info.ace_getDebugProperty(prop);
};
// prepareUserChangeset:
// Returns null if no new changes or ACE not ready. Otherwise, bundles up all user changes
// to the latest base text into a Changeset, which is returned (as a string if encodeAsString).
// If this method returns a truthy value, then applyPreparedChangesetToBase can be called
// at some later point to consider these changes part of the base, after which prepareUserChangeset
// must be called again before applyPreparedChangesetToBase. Multiple consecutive calls
// to prepareUserChangeset will return an updated changeset that takes into account the
// latest user changes, and modify the changeset to be applied by applyPreparedChangesetToBase
// accordingly.
editor.prepareUserChangeset = function()
{
if (!loaded) return null;
return info.ace_prepareUserChangeset();
};
editor.applyPreparedChangesetToBase = pendingInit(
function()
{
info.ace_applyPreparedChangesetToBase();
});
editor.setUserChangeNotificationCallback = pendingInit(function(callback)
{
info.ace_setUserChangeNotificationCallback(callback);
});
editor.setAuthorInfo = pendingInit(function(author, authorInfo)
{
info.ace_setAuthorInfo(author, authorInfo);
});
editor.setAuthorSelectionRange = pendingInit(function(author, start, end)
{
info.ace_setAuthorSelectionRange(author, start, end);
});
editor.getUnhandledErrors = function()
{
if (!loaded) return [];
// returns array of {error: <browser Error object>, time: +new Date()}
return info.ace_getUnhandledErrors();
};
editor.callWithAce = pendingInit(function(fn, callStack, normalize)
{
return info.ace_callWithAce(fn, callStack, normalize);
});
editor.execCommand = pendingInit(function(cmd, arg1)
{
info.ace_execCommand(cmd, arg1);
});
editor.replaceRange = pendingInit(function(start, end, text)
{
info.ace_replaceRange(start, end, text);
});
function sortFilesByEmbeded(files) {
var embededFiles = [];
var remoteFiles = [];
if (Ace2Editor.EMBEDED) {
for (var i = 0, ii = files.length; i < ii; i++) {
var file = files[i];
if (Object.prototype.hasOwnProperty.call(Ace2Editor.EMBEDED, file)) {
embededFiles.push(file);
} else {
remoteFiles.push(file);
}
}
} else {
remoteFiles = files;
}
return {embeded: embededFiles, remote: remoteFiles};
}
function pushRequireScriptTo(buffer) {
var KERNEL_SOURCE = '../static/js/require-kernel.js';
var KERNEL_BOOT = 'require.setRootURI("../minified/");\nrequire.setGlobalKeyPath("require");'
if (Ace2Editor.EMBEDED && Ace2Editor.EMBEDED[KERNEL_SOURCE]) {
buffer.push('<script type="text/javascript">');
buffer.push(Ace2Editor.EMBEDED[KERNEL_SOURCE]);
buffer.push(KERNEL_BOOT);
buffer.push('<\/script>');
}
}
function pushScriptsTo(buffer) {
/* Folling is for packaging regular expression. */
/* $$INCLUDE_JS("../static/js/ace2_inner.js"); */
var ACE_SOURCE = '../static/js/ace2_inner.js';
if (Ace2Editor.EMBEDED && Ace2Editor.EMBEDED[ACE_SOURCE]) {
buffer.push('<script type="text/javascript">');
buffer.push(Ace2Editor.EMBEDED[ACE_SOURCE]);
buffer.push('require("/ace2_inner");');
buffer.push('<\/script>');
} else {
file = ACE_SOURCE;
file = file.replace(/^\.\.\/static\/js\//, '../minified/');
buffer.push('<script type="application/javascript" src="' + file + '"><\/script>');
buffer.push('<script type="text/javascript">');
buffer.push('require("/ace2_inner");');
buffer.push('<\/script>');
}
}
function pushStyleTagsFor(buffer, files) {
var sorted = sortFilesByEmbeded(files);
var embededFiles = sorted.embeded;
var remoteFiles = sorted.remote;
if (embededFiles.length > 0) {
buffer.push('<style type="text/css">');
for (var i = 0, ii = embededFiles.length; i < ii; i++) {
var file = embededFiles[i];
buffer.push(Ace2Editor.EMBEDED[file].replace(/<\//g, '<\\/'));
}
buffer.push('<\/style>');
}
for (var i = 0, ii = remoteFiles.length; i < ii; i++) {
var file = remoteFiles[i];
buffer.push('<link rel="stylesheet" type="text/css" href="' + file + '"\/>');
}
}
editor.destroy = pendingInit(function()
{
info.ace_dispose();
info.frame.parentNode.removeChild(info.frame);
delete ace2.registry[info.id];
info = null; // prevent IE 6 closure memory leaks
});
editor.init = function(containerId, initialCode, doneFunc)
{
editor.importText(initialCode);
info.onEditorReady = function()
{
loaded = true;
doActionsPendingInit();
doneFunc();
};
(function()
{
var doctype = "<!doctype html>";
var iframeHTML = [];
iframeHTML.push(doctype);
iframeHTML.push("<html><head>");
// For compatability's sake transform in and out.
for (var i = 0, ii = iframeHTML.length; i < ii; i++) {
iframeHTML[i] = JSON.stringify(iframeHTML[i]);
}
plugins.callHook("aceInitInnerdocbodyHead", {
iframeHTML: iframeHTML
});
for (var i = 0, ii = iframeHTML.length; i < ii; i++) {
iframeHTML[i] = JSON.parse(iframeHTML[i]);
}
// calls to these functions ($$INCLUDE_...) are replaced when this file is processed
// and compressed, putting the compressed code from the named file directly into the
// source here.
// these lines must conform to a specific format because they are passed by the build script:
var includedCSS = [];
var $$INCLUDE_CSS = function(filename) {includedCSS.push(filename)};
$$INCLUDE_CSS("../static/css/iframe_editor.css");
$$INCLUDE_CSS("../static/css/pad.css");
$$INCLUDE_CSS("../static/custom/pad.css");
pushStyleTagsFor(iframeHTML, includedCSS);
var includedJS = [];
var $$INCLUDE_JS = function(filename) {includedJS.push(filename)};
pushRequireScriptTo(iframeHTML);
// Inject my plugins into my child.
iframeHTML.push('\
<script type="text/javascript">\
require.define("/plugins", null);\n\
require.define("/plugins.js", function (require, exports, module) {\
module.exports = parent.parent.require("/plugins");\
});\
</script>\
');
pushScriptsTo(iframeHTML);
iframeHTML.push('<style type="text/css" title="dynamicsyntax"></style>');
iframeHTML.push('</head><body id="innerdocbody" class="syntax" spellcheck="false">&nbsp;</body></html>');
// Expose myself to global for my child frame.
var thisFunctionsName = "ChildAccessibleAce2Editor";
(function () {return this}())[thisFunctionsName] = Ace2Editor;
var outerScript = 'editorId = "' + info.id + '"; editorInfo = parent.' + thisFunctionsName + '.registry[editorId]; ' + 'window.onload = function() ' + '{ window.onload = null; setTimeout' + '(function() ' + '{ var iframe = document.createElement("IFRAME"); ' + 'iframe.scrolling = "no"; var outerdocbody = document.getElementById("outerdocbody"); ' + 'iframe.frameBorder = 0; iframe.allowTransparency = true; ' + // for IE
'outerdocbody.insertBefore(iframe, outerdocbody.firstChild); ' + 'iframe.ace_outerWin = window; ' + 'readyFunc = function() { editorInfo.onEditorReady(); readyFunc = null; editorInfo = null; }; ' + 'var doc = iframe.contentWindow.document; doc.open(); var text = (' + JSON.stringify(iframeHTML.join('\n')) + ');doc.write(text); doc.close(); ' + '}, 0); }';
var outerHTML = [doctype, '<html><head>']
var includedCSS = [];
var $$INCLUDE_CSS = function(filename) {includedCSS.push(filename)};
$$INCLUDE_CSS("../static/css/iframe_editor.css");
$$INCLUDE_CSS("../static/css/pad.css");
$$INCLUDE_CSS("../static/custom/pad.css");
pushStyleTagsFor(outerHTML, includedCSS);
// bizarrely, in FF2, a file with no "external" dependencies won't finish loading properly
// (throbs busy while typing)
outerHTML.push('<link rel="stylesheet" type="text/css" href="data:text/css,"/>', '\x3cscript>\n', outerScript.replace(/<\//g, '<\\/'), '\n\x3c/script>', '</head><body id="outerdocbody"><div id="sidediv"><!-- --></div><div id="linemetricsdiv">x</div><div id="overlaysdiv"><!-- --></div></body></html>');
var outerFrame = document.createElement("IFRAME");
outerFrame.frameBorder = 0; // for IE
info.frame = outerFrame;
document.getElementById(containerId).appendChild(outerFrame);
var editorDocument = outerFrame.contentWindow.document;
editorDocument.open();
editorDocument.write(outerHTML.join(''));
editorDocument.close();
})();
};
return editor;
}
exports.Ace2Editor = Ace2Editor;