Question

我做了一个扩展HTMLEditor的自定义htmleditor。我删除了一些按钮，并添加了一些。

现在，我想添加几个按钮，以将键入的文本更改为1种特定颜色。但是我找不到在按钮的setOnAction中更改文本颜色的方法。我尝试了几种方法。

1：我在光标位置插入的html

2：设置htmleditor颜色的颜色选择器

（jsCodeInsertHtml字符串允许在光标处显示html）

    String jsCodeInsertHtml = "function insertHtmlAtCursor(html) {\n" +
            "    var range, node;\n" +
            "    if (window.getSelection && window.getSelection().getRangeAt) {\n" +
            "        range = window.getSelection().getRangeAt(0);\n" +
            "        node = range.createContextualFragment(html);\n" +
            "        range.insertNode(node);\n" +
            "    } else if (document.selection && document.selection.createRange) {\n" +
            "        document.selection.createRange().pasteHTML(html);\n" +
            "    }\n" +
            "}insertHtmlAtCursor('####html####')";



          // add a custom button to the top toolbar.
            Node nodetop = editor.lookup(".top-toolbar");
            if (nodetop instanceof ToolBar) {
                ToolBar topbar = (ToolBar) nodetop;



                //var1 color
                ImageView graphic = new ImageView(var1pic);
                Button colorVar1Button = new Button("", graphic);
                colorVar1Button.setFocusTraversable(false);
                colorVar1Button.setOnAction(new EventHandler<ActionEvent>() {
                    @Override
                    public void handle(ActionEvent arg0) {
                        WebView webView=(WebView)editor.lookup("WebView");
                        WebEngine engine= webView.getEngine();

                        //try 1
                        engine.executeScript(jsCodeInsertHtml.replace("####html####","<p><span style=\"color: rgb(200, 200, 200); caret-color: rgb(200, 200, 200);\">"));
                         //the HTML is inserted , but no colorchange. i tryed some htmlvariants aswel


                        //try 2
                        Node color = editor.lookup(".html-editor-foreground");
                        ((ColorPicker)color).setValue(Color.rgb(200,200,200));
                        // i notice the button change in the colorpicker ,
                        // but no change in color happens

                topbar.getItems().addAll(colorVar1Button);

Answer 1

找到了解决方案。我只需要触发Collorpicker的actionevent使其起作用

                colorVar1Button.setOnAction(new EventHandler<ActionEvent>() {
                    @Override
                    public void handle(ActionEvent arg0) {
                        Node color = editor.lookup(".html-editor-foreground");

                        ((ColorPicker)color).setValue(Color.HOTPINK);
                        color.fireEvent(new ActionEvent());
                    }
                });

            topbar.getItems().addAll(colorVar1Button);

如何使用代码更改颜色HTMLeditor？

1 个答案: