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merge.html
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<!doctype html>
<title>CodeMirror: merge view demo</title>
<meta charset="utf-8"/>
<link rel=stylesheet href="../doc/docs.css">
<link rel=stylesheet href="../lib/codemirror.css">
<link rel=stylesheet href="../addon/merge/merge.css">
<script src="../lib/codemirror.js"></script>
<script src="../mode/xml/xml.js"></script>
<script src="../mode/css/css.js"></script>
<script src="../mode/javascript/javascript.js"></script>
<script src="../mode/htmlmixed/htmlmixed.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/diff_match_patch/20121119/diff_match_patch.js"></script>
<script src="../addon/merge/merge.js"></script>
<style>
.CodeMirror { line-height: 1.2; }
@media screen and (min-width: 1300px) {
article { max-width: 1000px; }
#nav { border-right: 499px solid transparent; }
}
span.clicky {
cursor: pointer;
background: #d70;
color: white;
padding: 0 3px;
border-radius: 3px;
}
</style>
<div id=nav>
<a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>
<ul>
<li><a href="../index.html">Home</a>
<li><a href="../doc/manual.html">Manual</a>
<li><a href="https://github.com/codemirror/codemirror">Code</a>
</ul>
<ul>
<li><a class=active href="#">merge view</a>
</ul>
</div>
<article>
<h2>merge view demo</h2>
<div id=view></div>
<p>The <a href="../doc/manual.html#addon_merge"><code>merge</code></a>
addon provides an interface for displaying and merging diffs,
either <span class=clicky onclick="panes = 2; initUI()">two-way</span>
or <span class=clicky onclick="panes = 3; initUI()">three-way</span>.
The left (or center) pane is editable, and the differences with the
other pane(s) are <span class=clicky
onclick="toggleDifferences()">optionally</span> shown live as you edit
it. In the two-way configuration, there are also options to pad changed
sections to <span class=clicky onclick="connect = connect ? null :
'align'; initUI()">align</span> them, and to <span class=clicky
onclick="collapse = !collapse; initUI()">collapse</span> unchanged
stretches of text.</p>
<p>This addon depends on
the <a href="https://code.google.com/p/google-diff-match-patch/">google-diff-match-patch</a>
library to compute the diffs.</p>
<script>
var value, orig1, orig2, dv, panes = 2, highlight = true, connect = "align", collapse = false;
function initUI() {
if (value == null) return;
var target = document.getElementById("view");
target.innerHTML = "";
dv = CodeMirror.MergeView(target, {
value: value,
origLeft: panes == 3 ? orig1 : null,
orig: orig2,
lineNumbers: true,
mode: "text/html",
highlightDifferences: highlight,
connect: connect,
collapseIdentical: collapse
});
}
function toggleDifferences() {
dv.setShowDifferences(highlight = !highlight);
}
window.onload = function() {
value = document.documentElement.innerHTML;
orig1 = "<!doctype html>\n\n" + value.replace(/\.\.\//g, "codemirror/").replace("yellow", "orange");
orig2 = value.replace(/\u003cscript/g, "\u003cscript type=text/javascript ")
.replace("white", "purple;\n font: comic sans;\n text-decoration: underline;\n height: 15em");
initUI();
let d = document.createElement("div"); d.style.cssText = "width: 50px; margin: 7px; height: 14px"; dv.editor().addLineWidget(57, d)
};
function mergeViewHeight(mergeView) {
function editorHeight(editor) {
if (!editor) return 0;
return editor.getScrollInfo().height;
}
return Math.max(editorHeight(mergeView.leftOriginal()),
editorHeight(mergeView.editor()),
editorHeight(mergeView.rightOriginal()));
}
function resize(mergeView) {
var height = mergeViewHeight(mergeView);
for(;;) {
if (mergeView.leftOriginal())
mergeView.leftOriginal().setSize(null, height);
mergeView.editor().setSize(null, height);
if (mergeView.rightOriginal())
mergeView.rightOriginal().setSize(null, height);
var newHeight = mergeViewHeight(mergeView);
if (newHeight >= height) break;
else height = newHeight;
}
mergeView.wrap.style.height = height + "px";
}
</script>
</article>