feat: htmlToMarkdown (#968)

conf/lang/en-us.ini

@@ -322,6 +322,7 @@ print_text = Enable Printing
 
 [doc]
 word_to_html = Word to HTML
+html_to_markdown = HTML to Markdown
 modify_doc = Modify Document
 comparison = Comparison
 save_merge = Save Merge

conf/lang/zh-cn.ini

@@ -322,6 +322,7 @@ print_text = 开启打印
 
 [doc]
 word_to_html = Word转笔记
+html_to_markdown = HTML转Markdown
 modify_doc = 修改文档
 comparison = 文档比较
 save_merge = 保存合并

static/js/cherry_markdown.js

@@ -152,6 +152,16 @@ $(function () {
                     })
                 }
             },
+            {
+                noIcon: true,
+                name: 'Htm转Markdown',
+                onclick: ()=>{
+                    let converter = new HtmlToMarkdownConverter();
+                    converter.handleFileSelect(function (response) {
+                        window.editor.insertValue(response);
+                    })
+                }
+            }
         ]
     });
 

static/js/html-to-markdown.js

@@ -0,0 +1,29 @@
+
+class HtmlToMarkdownConverter {
+
+    handleFileSelect(callback, accept = '.html,.htm') {
+        let input = document.createElement('input');
+        input.type = 'file';
+        input.accept = accept;
+        input.onchange = (e)=>{
+            let file = e.target.files[0];
+            if (!file) {
+                return;
+            }
+            let reader = new FileReader();
+            reader.onload = (e)=>{
+                let text = e.target.result;
+                let markdown = this.convertToMarkdown(text);
+                callback(markdown);
+            };
+            reader.readAsText(file);
+        };
+        input.click();
+    }
+
+
+    convertToMarkdown(html) {
+        let turndownService = new TurndownService()
+        return turndownService.turndown(html)
+    }
+}

static/js/markdown.js

@@ -446,9 +446,16 @@ $(function () {
                     layer.msg(messages);
                 }
                 converter.replaceHtmlBase64(response.value).then((html)=>{
-                    insertAndClearToMarkdown(html);
+                    let cm = window.editor.cm;
+                    cm.replaceSelection(html);
                 });
             })
+        } else if (name === 'htmlToMarkdown') {
+            let converter = new HtmlToMarkdownConverter();
+            converter.handleFileSelect(function (response) {
+                let cm = window.editor.cm;
+                cm.replaceSelection(response);
+            })
         } else {
             var action = window.editor.toolbarHandlers[name];