Question

我有一个CodeMirror实例，它有一些内容/文本和一些标记来突出显示某些区域。我想将所有内容（包括标记）保存到某些后端服务中。然后，我想恢复内容和标记，使恢复的文档看起来像原始文件（包括标记）。

最好的方法是什么？

Answer 1

一种简单的方法（假设您使用的是版本3.x）将调用cm.getDoc()并将结果缓存到某处，而不是在新编辑器上使用cm.swapDoc(doc: CodeMirror.Doc)。

来自docs：

每个编辑器都与CodeMirror.Doc的实例相关联文献。文档代表编辑器内容，加上选择，撤消历史记录和模式。文档只能与a关联一次编辑。您可以通过调用来创建新文档 CodeMirror.Doc(text, mode, firstLineNumber)构造函数。

Answer 2

你可以查看我的代码。我以前做过这个。

http://jsfiddle.net/aljordan82/4ewe9/

<html>
<head>
<style>
    .bg {
        background:#CCC;
    }
</style>
<script>
    $(document).ready(function() {
        var strSavedMarkers = $("#savedMarkers").val(); // get markers from textarea
        var arrMarkers = JSON.parse(strSavedMarkers)
        $("#markerStyle").html(".bg{background:#AAAAAA;}")
        var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
            mode: "text/html",
            lineNumbers: true,
            onCursorActivity: function() {}
        });
        //get content from textarea 
        editor.setValue($("#savedContent").val());
        applyMarkers();
        $("#mark").click(function() {
            // Marked selected text
            var marker = editor.markText(editor.getCursor(true), editor.getCursor(false), {
                className: "bg"
            });
            // get values of marker. [ch , line , ch ,  line]
            var tempArray = [marker.find().from.ch, marker.find().from.line, marker.find().to.ch, marker.find().to.line]
            // we push this array to arrMarkers
            arrMarkers.push(tempArray)
        });

        // when done editing 
        $("#save").click(function() {
            JSON.stringify(arrMarkers)
            $("#savedMarkers").val(JSON.stringify(arrMarkers))

        });

        function applyMarkers() {
            var strSavedMarkers = $("#savedMarkers").val(); // get markers from textarea
            var arrSavedMarkers = JSON.parse(strSavedMarkers)
            for (x in arrSavedMarkers) {
                var marker = arrSavedMarkers[x]
                editor.markText({
                    'ch': marker[0],
                        'line': marker[1]
                }, {
                    'ch': marker[2],
                        'line': marker[3]
                }, {
                    className: "bg"
                });
            }
        }
    });
</script>
<head>
<body>

    <p>we need two textareas, one to store array of markers and the other is so store the content.</p>
    <p></p>
    <textarea id="savedMarkers">[[20,3,40,3],[12,8,90,8]]</textarea>
    <textarea id="savedContent">
        <title>hidden textarea, poplate from back end</title>
        <catalog>
            <book id="bk101">
                <author>Gambardella, Matthew</author>
                <title>XML Developer's Guide</title>
                <genre>Computer</genre>
                <price>44.95</price>
                <publish_date>2000-10-01</publish_date>
                <description>An in-depth look at creating applications with XML.</description>
            </book>
            <book id="bk102">
                <author>Ralls, Kim</author>
                <title>Midnight Rain</title>
                <genre>Fantasy</genre>
                <price>5.95</price>
                <publish_date>2000-12-16</publish_date>
                <description>A former architect battles corporate zombies, an evil sorceress, and her own childhood to become queen of the world.</description>
            </book>
            <book id="bk103">
                <author>Corets, Eva</author>
                <title>Maeve Ascendant</title>
                <genre>Fantasy</genre>
                <price>5.95</price>
                <publish_date>2000-11-17</publish_date>
                <description>After the collapse of a nanotechnology society in England, the young survivors lay the foundation for a new society.</description>
            </book>
            <catalog>
    </textarea>
    <form>
        <br/>
        <textarea id="code" name="code"></textarea>
    </form>
    <button id="mark">Mark Selection</button>
    <button id="save">Save Markers and Content</button>
</body>

如何使用标记保存和恢复内容？

2 个答案: