javascript – 使用CKEditor的动态正文颜色

2023年4月8日 169次阅读

我有一个关于CKEditor的情况,我想解决.我使用jQuery颜色选择器为DIV标签添加背景颜色.然后我允许用户使用CKEditor编辑Div标签内容.但是,我注意到没有一种简单的方法来获取div标签的背景颜色,然后在编辑器加载时将其作为CKEditor的背景颜色.

我已经阅读了bodyClass和bodyId,并不认为这些解决了我的问题.我没有类元素,但有一个内联样式声明

<div class="tp-header" style="background-color:#CCCCCC;">content</div>

我按如下方式调用CKEditor：

var editorId = 'editor1';
var instance = CKEDITOR.instances[editorId];
var color = $('.' + headerElementClass).css('background-color');
if (instance) { CKEDITOR.remove(instance); }
$('#' + editorId).ckeditor({ toolbar: 'BasicHtml', height: '100px', width: '500px', fullPage: false, bodyClass : 'background-color:' + color });
$('#' + editorId).val($('.' + headerElementClass).html());

注意bodyClass的使用失败.有没有办法做到这一点？我在网站上匆匆寻找答案,却找不到答案.我希望有人在这里有答案.

最佳答案 我正在考虑这个问题,我提出了一个更简单的解决方案.

我没有使用CKEditor jQuery适配器,因此您可能需要修改它以适合您的情况.

我使用标准的JavaScript集成方法测试了它.

快速概述：
设置变量.
创建编辑器实例.

插入此“addCss”函数调用：

CKEDITOR.instances[editorId].addCss( 'body { background-color: '+color+'; }' );

这里的所有都是它的.这是基于您的代码的示例：

// I added the "id" attribute:
<div id="editor1" class="tp-header" style="background-color:#CCCCCC;">content</div>

// Declare the variables, I added "headerElementClass".
var headerElementClass = "tp-header";
var color = $('.' + headerElementClass).css('background-color');
var editorId = 'editor1';

// Create the instance.
var instanceOne = CKEDITOR.replace( editorId,
{
  toolbar: 'Basic',
  height: '100px',
  width: '500px',
  fullPage: false,
  customConfig : 'yourCustomConfigFileIfUsed.js'
 });

// Insert the "addCss" function call:
instanceOne.addCss( 'body { background-color: '+color+'; }' );

如果您愿意,可以将addCss函数调用移动到您的配置文件(将其放在editorConfig函数之外).

好吧,
乔

离开更复杂的方法,有人可能会发现这些概念很有用.

您可以使用(bodyClass：’nameOfClass’),然后为该类的background-color属性赋值.但这很难,因为你有一个动态的背景颜色.

要动态分配背景颜色,您可以执行以下操作：
从您的代码开始并继续使用jQuery：

var editorId = 'editor1';
var instance = CKEDITOR.instances[editorId];
var color = $('.' + headerElementClass).css('background-color');

// Create a unique body id for this instance "editor1" ( bodyIdForeditor1 )
var idForBody = 'bodyIdFor' + editorId;

if (instance) { CKEDITOR.remove(instance); }

// Use bodyId instead of the original bodyClass assignment
$('#' + editorId).ckeditor({ 
  toolbar: 'BasicHtml', 
  height: '100px', 
  width: '500px', 
  fullPage: false, 
  bodyId : idForBody 
});

$('#' + editorId).val($('.' + headerElementClass).html());

// After both the document and editor instance are ready, 
// assign the background color to the body

// Wait for the document ready event
$(document).ready(function(){

  // Wait for the instanceReady event to fire for this (editor1) instance
  CKEDITOR.instances.editor1.on( 'instanceReady', 
    function( instanceReadyEventObj )
    {
      var currentEditorInstance = instanceReadyEventObj.editor;
      var iframeDoc=null;

      // Create a function because these steps will be repeated
      function setIframeBackground()
      {
        // The CKEditor content iframe doesn't have a Name, Id or Class
        // So, we'll assign an ID to the iframe 
        // it's inside a table data cell that does have an Id.
        // The Id of the data cell is "cke_contents_editor1" 
        // Note that the instance name is the last part of the Id
        // I'll follow this convention and use an Id of "cke_contents_iframe_editor1" 

        $("#cke_contents_editor1 iframe").attr("id", "cke_contents_iframe_editor1");

        // Now use the iframe Id to get the iframe document object
        // We'll need this to set the context and access items inside the iframe

        $('#cke_iframe_editor1').each( 
          function(){ iframeDoc=this.contentWindow.document;}
        );

        // Finally we can access the iframe body and set the background color.
        // We set the Id of the body when we created the instance (bodyId : idForBody).
        // We use the iframe document object (iframeDoc) to set the context.
        // We use the "color" variable created earlier

        $('#' + idForBody, iframeDoc).css("background-color", color);
      }

      // Call the function to set the color when the editor instance first loads
      setIframeBackground();

      // When the user switches to "source" view mode, the iframe is destroyed
      // So we need to set the color again when they switch back to "wysiwyg" mode

      // Watch for the "mode" event and check if we're in "wysiwyg" mode
      currentEditorInstance.on( 'mode', function()
      {
        if(currentEditorInstance.mode == 'wysiwyg')
          setIframeBackground();
      });
    }
  );
});

好吧,
乔

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