231 lines
8.3 KiB
HTML
231 lines
8.3 KiB
HTML
|
<!doctype html>
|
||
|
|
|
||
|
|
<title>CodeMirror: Version 3 upgrade guide</title>
|
||
|
|
<meta charset="utf-8"/>
|
||
|
|
<link rel=stylesheet href="docs.css">
|
||
|
|
<script src="../lib/codemirror.js"></script>
|
||
|
|
<link rel="stylesheet" href="../lib/codemirror.css">
|
||
|
|
<script src="../addon/runmode/runmode.js"></script>
|
||
|
|
<script src="../addon/runmode/colorize.js"></script>
|
||
|
|
<script src="../mode/javascript/javascript.js"></script>
|
||
|
|
<script src="../mode/xml/xml.js"></script>
|
||
|
|
<script src="../mode/css/css.js"></script>
|
||
|
|
<script src="../mode/htmlmixed/htmlmixed.js"></script>
|
||
|
|
<script src="activebookmark.js"></script>
|
||
|
|
|
||
|
|
<div id=nav>
|
||
|
|
<a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="logo.png"></a>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><a href="../index.html">Home</a>
|
||
|
|
<li><a href="manual.html">Manual</a>
|
||
|
|
<li><a href="https://github.com/codemirror/codemirror">Code</a>
|
||
|
|
</ul>
|
||
|
|
<ul>
|
||
|
|
<li><a class=active href="#upgrade">Upgrade guide</a>
|
||
|
|
<li><a href="#dom">DOM structure</a></li>
|
||
|
|
<li><a href="#gutters">Gutter model</a></li>
|
||
|
|
<li><a href="#events">Event handling</a></li>
|
||
|
|
<li><a href="#marktext">markText method arguments</a></li>
|
||
|
|
<li><a href="#folding">Line folding</a></li>
|
||
|
|
<li><a href="#lineclass">Line CSS classes</a></li>
|
||
|
|
<li><a href="#positions">Position properties</a></li>
|
||
|
|
<li><a href="#matchbrackets">Bracket matching</a></li>
|
||
|
|
<li><a href="#modes">Mode management</a></li>
|
||
|
|
<li><a href="#new">New features</a></li>
|
||
|
|
</ul>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<article>
|
||
|
|
|
||
|
|
<h2 id=upgrade>Upgrading to version 3</h2>
|
||
|
|
|
||
|
|
<p>Version 3 does not depart too much from 2.x API, and sites that use
|
||
|
|
CodeMirror in a very simple way might be able to upgrade without
|
||
|
|
trouble. But it does introduce a number of incompatibilities. Please
|
||
|
|
at least skim this text before upgrading.</p>
|
||
|
|
|
||
|
|
<p>Note that <strong>version 3 drops full support for Internet
|
||
|
|
Explorer 7</strong>. The editor will mostly work on that browser, but
|
||
|
|
it'll be significantly glitchy.</p>
|
||
|
|
|
||
|
|
<section id=dom>
|
||
|
|
<h2>DOM structure</h2>
|
||
|
|
|
||
|
|
<p>This one is the most likely to cause problems. The internal
|
||
|
|
structure of the editor has changed quite a lot, mostly to implement a
|
||
|
|
new scrolling model.</p>
|
||
|
|
|
||
|
|
<p>Editor height is now set on the outer wrapper element (CSS
|
||
|
|
class <code>CodeMirror</code>), not on the scroller element
|
||
|
|
(<code>CodeMirror-scroll</code>).</p>
|
||
|
|
|
||
|
|
<p>Other nodes were moved, dropped, and added. If you have any code
|
||
|
|
that makes assumptions about the internal DOM structure of the editor,
|
||
|
|
you'll have to re-test it and probably update it to work with v3.</p>
|
||
|
|
|
||
|
|
<p>See the <a href="manual.html#styling">styling section</a> of the
|
||
|
|
manual for more information.</p>
|
||
|
|
</section>
|
||
|
|
<section id=gutters>
|
||
|
|
<h2>Gutter model</h2>
|
||
|
|
|
||
|
|
<p>In CodeMirror 2.x, there was a single gutter, and line markers
|
||
|
|
created with <code>setMarker</code> would have to somehow coexist with
|
||
|
|
the line numbers (if present). Version 3 allows you to specify an
|
||
|
|
array of gutters, <a href="manual.html#option_gutters">by class
|
||
|
|
name</a>,
|
||
|
|
use <a href="manual.html#setGutterMarker"><code>setGutterMarker</code></a>
|
||
|
|
to add or remove markers in individual gutters, and clear whole
|
||
|
|
gutters
|
||
|
|
with <a href="manual.html#clearGutter"><code>clearGutter</code></a>.
|
||
|
|
Gutter markers are now specified as DOM nodes, rather than HTML
|
||
|
|
snippets.</p>
|
||
|
|
|
||
|
|
<p>The gutters no longer horizontally scrolls along with the content.
|
||
|
|
The <code>fixedGutter</code> option was removed (since it is now the
|
||
|
|
only behavior).</p>
|
||
|
|
|
||
|
|
<pre data-lang="text/html">
|
||
|
|
<style>
|
||
|
|
/* Define a gutter style */
|
||
|
|
.note-gutter { width: 3em; background: cyan; }
|
||
|
|
</style>
|
||
|
|
<script>
|
||
|
|
// Create an instance with two gutters -- line numbers and notes
|
||
|
|
var cm = new CodeMirror(document.body, {
|
||
|
|
gutters: ["note-gutter", "CodeMirror-linenumbers"],
|
||
|
|
lineNumbers: true
|
||
|
|
});
|
||
|
|
// Add a note to line 0
|
||
|
|
cm.setGutterMarker(0, "note-gutter", document.createTextNode("hi"));
|
||
|
|
</script>
|
||
|
|
</pre>
|
||
|
|
</section>
|
||
|
|
<section id=events>
|
||
|
|
<h2>Event handling</h2>
|
||
|
|
|
||
|
|
<p>Most of the <code>onXYZ</code> options have been removed. The same
|
||
|
|
effect is now obtained by calling
|
||
|
|
the <a href="manual.html#on"><code>on</code></a> method with a string
|
||
|
|
identifying the event type. Multiple handlers can now be registered
|
||
|
|
(and individually unregistered) for an event, and objects such as line
|
||
|
|
handlers now also expose events. See <a href="manual.html#events">the
|
||
|
|
full list here</a>.</p>
|
||
|
|
|
||
|
|
<p>(The <code>onKeyEvent</code> and <code>onDragEvent</code> options,
|
||
|
|
which act more as hooks than as event handlers, are still there in
|
||
|
|
their old form.)</p>
|
||
|
|
|
||
|
|
<pre data-lang="javascript">
|
||
|
|
cm.on("change", function(cm, change) {
|
||
|
|
console.log("something changed! (" + change.origin + ")");
|
||
|
|
});
|
||
|
|
</pre>
|
||
|
|
</section>
|
||
|
|
<section id=marktext>
|
||
|
|
<h2>markText method arguments</h2>
|
||
|
|
|
||
|
|
<p>The <a href="manual.html#markText"><code>markText</code></a> method
|
||
|
|
(which has gained some interesting new features, such as creating
|
||
|
|
atomic and read-only spans, or replacing spans with widgets) no longer
|
||
|
|
takes the CSS class name as a separate argument, but makes it an
|
||
|
|
optional field in the options object instead.</p>
|
||
|
|
|
||
|
|
<pre data-lang="javascript">
|
||
|
|
// Style first ten lines, and forbid the cursor from entering them
|
||
|
|
cm.markText({line: 0, ch: 0}, {line: 10, ch: 0}, {
|
||
|
|
className: "magic-text",
|
||
|
|
inclusiveLeft: true,
|
||
|
|
atomic: true
|
||
|
|
});
|
||
|
|
</pre>
|
||
|
|
</section>
|
||
|
|
<section id=folding>
|
||
|
|
<h2>Line folding</h2>
|
||
|
|
|
||
|
|
<p>The interface for hiding lines has been
|
||
|
|
removed. <a href="manual.html#markText"><code>markText</code></a> can
|
||
|
|
now be used to do the same in a more flexible and powerful way.</p>
|
||
|
|
|
||
|
|
<p>The <a href="../demo/folding.html">folding script</a> has been
|
||
|
|
updated to use the new interface, and should now be more robust.</p>
|
||
|
|
|
||
|
|
<pre data-lang="javascript">
|
||
|
|
// Fold a range, replacing it with the text "??"
|
||
|
|
var range = cm.markText({line: 4, ch: 2}, {line: 8, ch: 1}, {
|
||
|
|
replacedWith: document.createTextNode("??"),
|
||
|
|
// Auto-unfold when cursor moves into the range
|
||
|
|
clearOnEnter: true
|
||
|
|
});
|
||
|
|
// Get notified when auto-unfolding
|
||
|
|
CodeMirror.on(range, "clear", function() {
|
||
|
|
console.log("boom");
|
||
|
|
});
|
||
|
|
</pre>
|
||
|
|
</section>
|
||
|
|
<section id=lineclass>
|
||
|
|
<h2>Line CSS classes</h2>
|
||
|
|
|
||
|
|
<p>The <code>setLineClass</code> method has been replaced
|
||
|
|
by <a href="manual.html#addLineClass"><code>addLineClass</code></a>
|
||
|
|
and <a href="manual.html#removeLineClass"><code>removeLineClass</code></a>,
|
||
|
|
which allow more modular control over the classes attached to a line.</p>
|
||
|
|
|
||
|
|
<pre data-lang="javascript">
|
||
|
|
var marked = cm.addLineClass(10, "background", "highlighted-line");
|
||
|
|
setTimeout(function() {
|
||
|
|
cm.removeLineClass(marked, "background", "highlighted-line");
|
||
|
|
});
|
||
|
|
</pre>
|
||
|
|
</section>
|
||
|
|
<section id=positions>
|
||
|
|
<h2>Position properties</h2>
|
||
|
|
|
||
|
|
<p>All methods that take or return objects that represent screen
|
||
|
|
positions now use <code>{left, top, bottom, right}</code> properties
|
||
|
|
(not always all of them) instead of the <code>{x, y, yBot}</code> used
|
||
|
|
by some methods in v2.x.</p>
|
||
|
|
|
||
|
|
<p>Affected methods
|
||
|
|
are <a href="manual.html#cursorCoords"><code>cursorCoords</code></a>, <a href="manual.html#charCoords"><code>charCoords</code></a>, <a href="manual.html#coordsChar"><code>coordsChar</code></a>,
|
||
|
|
and <a href="manual.html#getScrollInfo"><code>getScrollInfo</code></a>.</p>
|
||
|
|
</section>
|
||
|
|
<section id=matchbrackets>
|
||
|
|
<h2>Bracket matching no longer in core</h2>
|
||
|
|
|
||
|
|
<p>The <a href="manual.html#addon_matchbrackets"><code>matchBrackets</code></a>
|
||
|
|
option is no longer defined in the core editor.
|
||
|
|
Load <code>addon/edit/matchbrackets.js</code> to enable it.</p>
|
||
|
|
</section>
|
||
|
|
<section id=modes>
|
||
|
|
<h2>Mode management</h2>
|
||
|
|
|
||
|
|
<p>The <code>CodeMirror.listModes</code>
|
||
|
|
and <code>CodeMirror.listMIMEs</code> functions, used for listing
|
||
|
|
defined modes, are gone. You are now encouraged to simply
|
||
|
|
inspect <code>CodeMirror.modes</code> (mapping mode names to mode
|
||
|
|
constructors) and <code>CodeMirror.mimeModes</code> (mapping MIME
|
||
|
|
strings to mode specs).</p>
|
||
|
|
</section>
|
||
|
|
<section id=new>
|
||
|
|
<h2>New features</h2>
|
||
|
|
|
||
|
|
<p>Some more reasons to upgrade to version 3.</p>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li>Bi-directional text support. CodeMirror will now mostly do the
|
||
|
|
right thing when editing Arabic or Hebrew text.</li>
|
||
|
|
<li>Arbitrary line heights. Using fonts with different heights
|
||
|
|
inside the editor (whether off by one pixel or fifty) is now
|
||
|
|
supported and handled gracefully.</li>
|
||
|
|
<li>In-line widgets. See <a href="../demo/widget.html">the demo</a>
|
||
|
|
and <a href="manual.html#addLineWidget">the docs</a>.</li>
|
||
|
|
<li>Defining custom options
|
||
|
|
with <a href="manual.html#defineOption"><code>CodeMirror.defineOption</code></a>.</li>
|
||
|
|
</ul>
|
||
|
|
</section>
|
||
|
|
</article>
|
||
|
|
|
||
|
|
<script>setTimeout(function(){CodeMirror.colorize();}, 20);</script>
|