如何将editor.md的图片上传改成七牛?

摘要：之前的编辑器一直用的是但是问题也不少之后觉得换成编辑器首选当然就是主要原因就是界面美观功能全面但是问题也有比如图片上传不知道为什么作者会用那么蛋疼的表单上传难道只是为了兼容看了上的维护时间最后一次维护差不多半年了想让作者来改可能性是不大了那

之前的编辑器一直用的是simditor, 但是问题也不少, 之后觉得换成markdown编辑器, 首选当然就是editor.md, 主要原因就是界面美观, 功能全面...

但是editor.md问题也有, 比如图片上传, 不知道为什么作者会用那么蛋疼的表单上传, 难道只是为了兼容IE8? 看了github上的维护时间, 最后一次维护差不多半年了, 想让作者来改, 可能性是不大了, 那么就只能自己来了...

editor.md的图片上传是以插件的形式存在的, 文件在./plugins/image-dialog/image-dialog.js, 我们就拿这个文件开刀.

另外, editor.md添加图片后, 不设置alt, 会自动跳到第二行, 只需要把cm.setCursor(cursor.line, cursor.ch + 2)注释了即可, 没有搞明白作者这段代码的用意是什么...

exports.fn.imageDialog = function () {
    var cm = this.cm
    var lang = this.lang
    var editor = this.editor
    var settings = this.settings
    var cursor = cm.getCursor()
    var selection = cm.getSelection()
    var imageLang = lang.dialog.image
    var classPrefix = this.classPrefix
    var iframeName = classPrefix + "image-iframe"
    var dialogName = classPrefix + pluginName,
        dialog
    cm.focus()
    var loading = function (show) {
        var _loading = dialog.find("." + classPrefix + "dialog-mask")
        _loading[(show) ? "show" : "hide"]()
    }
    if (editor.find("." + dialogName).length < 1) {
        var guid = new Date().getTime()
        var action = settings.imageUploadURL + (settings.imageUploadURL.indexOf("?") >= 0 ? "&" : "?") + "guid=" + guid
        if (settings.crossDomainUpload) {
            action += "&callback=" + settings.uploadCallbackURL + "&dialog_id=editormd-image-dialog-" + guid
        }
        var dialogContent = ((settings.imageUpload) ? "
" : "
") +
            "" + imageLang.url + "" +
            "" + (function () {
                return (settings.imageUpload) ? "
" +
                "" +
                "" +
                "
" : ""
            })() +
            "
" +
            "" + imageLang.alt + "" +
            "" +
            "
" +
            "" + imageLang.link + "" +
            "" +
            "
" +
            ((settings.imageUpload) ? "" : "
")
        dialog = this.createDialog({
            title: imageLang.title,
            width: (settings.imageUpload) ? 465 : 380,
            height: 254,
            name: dialogName,
            content: dialogContent,
            mask: settings.dialogShowMask,
            drag: settings.dialogDraggable,
            lockScreen: settings.dialogLockScreen,
            maskStyle: {
                opacity: settings.dialogMaskOpacity,
                backgroundColor: settings.dialogMaskBgColor
            },
            buttons: {
                enter: [lang.buttons.enter, function () {
                    var url = this.find("[data-url]").val()
                    var alt = this.find("[data-alt]").val()
                    var link = this.find("[data-link]").val()
                    if (url === "") {
                        alert(imageLang.imageURLEmpty)
                        return false
                    }
                    var altAttr = (alt !== "") ? " "" + alt + """ : ""
                    var arr_url = url.split("$$")
                    var text = ""
                    for (var i = 0, length = arr_url.length; i < length; i++) {
                        if (link === "" || link === "http://") {
                            text = text + "![" + alt + "](" + arr_url[i] + altAttr + ")

"
                        } else {
                            text = text + "[![" + alt + "](" + arr_url[i] + altAttr + ")](" + link + altAttr + ")

"
                        }
                    }
                    cm.replaceSelection(text)
                    if (alt === "") {
                        // cm.setCursor(cursor.line, cursor.ch + 2)
                    }
                    this.hide().lockScreen(false).hideMask()
                    return false
                }],
                cancel: [lang.buttons.cancel, function () {
                    this.hide().lockScreen(false).hideMask()
                    return false
                }]
            }
        })
        dialog.attr("id", classPrefix + "image-dialog-" + guid)
        if (!settings.imageUpload) {
            return
        }
        var Qiniu_upload = function(files, length, i) {
            if (length > i) {
                var formdata = new FormData()
                formdata.append("file", files[i])
                formdata.append("key", new Date().getTime() + ".jpg")
                formdata.append("token", "七牛账号对应的token")
                $.ajax({
                    type: "POST",
                    url: "http://up.qiniu.com/",
                    data: formdata,
                    dataType: "json",
                    contentType: false,
                    processData: false
                }).then(function(json) {
                    var oldurl = $("[data-url]").val()
                    if (oldurl === "") {
                        $("[data-url]").val("七牛图片服务器的域名/" + json.key)
                    } else {
                        oldurl = oldurl + "$$七牛图片服务器的域名/" + json.key
                        $("[data-url]").val(oldurl)
                    }
                    i++
                    Qiniu_upload(files, length, i)
                }, function (err) {
                    console.log(err)
                })
            } else {
                $("[name="file"]").val("")
                loading(false)
            }
        }
        var submitHandler = function() {
            var files = $("[name="file"]")[0].files
            if (files.length > 0) {
                Qiniu_upload(files, files.length, 0)
            }
            return false
        }
        var fileInput = dialog.find("[name="file"]")
        fileInput.off("change").on("change", function() {
            var fileName = fileInput.val()
            var isImage = new RegExp("(.(" + settings.imageFormats.join("|") + "))$") // /(.(webp|jpg|jpeg|gif|bmp|png))$/
            if (fileName === "") {
                alert(imageLang.uploadFileEmpty)
                return false
            }
            if (!isImage.test(fileName)) {
                alert(imageLang.formatNotAllowed + settings.imageFormats.join(", "))
                return false
            }
            loading(true)
            dialog.find("[type="submit"]").off("click").on("click", submitHandler).trigger("click")
        })
    }
    dialog = editor.find("." + dialogName)
    dialog.find("[type="text"]").val("")
    dialog.find("[type="file"]").val("")
    dialog.find("[data-link]").val("http://")
    this.dialogShowMask(dialog)
    this.dialogLockScreen()
    dialog.show()
}