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How to customize the table styles in content editor webpart

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Requirement:

  • How to customize the table styles in content editor webpart

Attachment:

  1. The attachment contains Sample_Files zip which in turn contains 2 files for reference:
  2. sample.master file
  3. CustomHtmlEditorTableFormats.css

Steps to REPRO the OOB functionality:

  1. ADD Content Editor Webpart to your Webpart page
  2. Click on Rich text editor in the tool pane of the webpart
  3. Click on Insert table
  4. You will see the check box "Apply Table template"
    (Note: In case its disabled. Please follow instructions as per : https://support.microsoft.com/kb/948320)
  5. If its enabled, Click on the check box Apply Table template
  6. There are some predefined templates. Now, if we want to add our own table template, then how to do that? The resolution for the same is below

Resolution / WorkAround:

  1. Browse to the location: C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\LAYOUTS\1033\STYLES
  2. Make a copy of HtmlEditorTableFormats.css (Note: DO NOT make any changes in the OOB files without using SharePoint Designer. Changing any OOB Files using Visual Studio/ text editor is not supported & recommended. )
  3. Rename the copy to (say) CustomHtmlEditorTableFormats.css
  4. Now, open the CustomHtmlEditorTableFormats.css in any text editor
  5. Add your styles for table to it. Few very point points to take care:
    • It should be with the below prescribed format.
    • The whole set of below .css classes describes one single table format.
    • We cannot change the name of the .CSS classes except the highlighted number
    • The highlighted number “10” in all the below classes can be any other number. Make sure it is numeric only
  6. Add the following bunch of .css classes in the custom css file (as created in POINT NO. 3) as per the instructions mentioned in the POINT NO. 5
    .ms-rteTable-10   {
              border-width: 0px;
              border-style: none;
              border-collapse: collapse;
              font-family: Tahoma; 
    }
    .ms-rteTable-10 tr.ms-rteTableHeaderRow-10      {
              margin: 10px;
              padding: 10px;
              color: #3F4D6B;
              background: #D6E8FF;
              text-align: left;
              font-size: 10pt; 
              font-style: normal;
              font-family: Tahoma; 
              text-transform: capitalize;
              font-weight: bold;
              border-spacing: 10px;
              line-height: 14pt;
              vertical-align: top;
    }
    .ms-rteTable-10 td.ms-rteTableHeaderFirstCol-10    {
              padding: 0in 5.4pt 0in 5.4pt;
              color: #3a4663;
              line-height: 14pt;
    }
    .ms-rteTable-10 td.ms-rteTableHeaderLastCol-10  {
              padding: 0in 5.4pt 0in 5.4pt;
              color: #3a4663;
              line-height: 14pt;
    }
    .ms-rteTable-10 td.ms-rteTableHeaderOddCol-10 {
              padding:0in 5.4pt 0in 5.4pt;
              color: #3a4663;
              line-height: 14pt;
    }
    .ms-rteTable-10 td.ms-rteTableHeaderEvenCol-10
    {
              padding:0in 5.4pt 0in 5.4pt; color: #3a4663;
              line-height: 14pt;
    }
    .ms-rteTable-10 tr.ms-rteTableOddRow-10  {
              color: #666666;
              background-color: #F2F3F4;
              font-size: 10pt;  
              vertical-align: top;
    }
    .ms-rteTable-10 tr.ms-rteTableEvenRow-10   {
              color: #666666;
              background-color: #E7EBF7;
              font-size: 10pt;  
              vertical-align: top;
    }
    .ms-rteTable-10 td.ms-rteTableFirstCol-10  {
              padding: 0in 5.4pt 0in 5.4pt;
    }
    .ms-rteTable-10 td.ms-rteTableLastCol-10 {padding:0in 5.4pt 0in 5.4pt;}
    .ms-rteTable-10 td.ms-rteTableOddCol-10  {
              padding: 0in 5.4pt 0in 5.4pt;
    }
    .ms-rteTable-10 td.ms-rteTableEvenCol-10 {
              padding:0in 5.4pt 0in 5.4pt;
    }
    .ms-rteTable-10 tr.ms-rteTableFooterRow-10     {
              background-color: #D6E8FF;
              color: #4A5A80;
              font-weight: 500;
              font-size: 10pt; 
              font-family: Tahoma; 
              line-height: 11pt;
    }
    .ms-rteTable-10 td.ms-rteTableFooterFirstCol-10  {
              padding: 0in 5.4pt 0in 5.4pt;
              border-top: solid gray 1.0pt;
              text-align: left;
    }
    .ms-rteTable-10 td.ms-rteTableFooterLastCol-10 {
              padding:0in 5.4pt 0in 5.4pt;
              border-top:solid gray 1.0pt;
              text-align:left;
    }
    .ms-rteTable-10 td.ms-rteTableFooterOddCol-10  {
              padding: 0in 5.4pt 0in 5.4pt;
              text-align: left;
              border-top: solid gray 1.0pt;
    }
    .ms-rteTable-10 td.ms-rteTableFooterEvenCol-10  {
              padding: 0in 5.4pt 0in 5.4pt;
              text-align: left;
              border-top: solid gray 1.0pt;
    }
  7. Open the respective master page for the site, if default.master (open in SharePoint Designer) and if a custom master page (open either in SharePoint Designer or Visual Studio or any text editor) (Note: In case, the site is using default.master, then please make changes using SharePoint designer only. Changing default.master using Visual Studio is not supported & recommended. In case wanted to make changes using Visual Studio, then make copy of default.master and name it as (say) custom.master and now make changes
  8. If there is any URL specific for HtmlEditorTableFormats.css, remove the link from master page. And now, attach the URL for the stylesheet CustomHtmlEditorTableFormats.css to the respective master page.
  9. Upload the changed master page to the respective site and thereby publish & approve the changed one.
  10. Check the table formats now in the content editor webpart.
  11. The name of the custom table format will be: "Table Format [the number given]". In our case it will be "Table Format 10"

End Result:

Custom_TableStyles_ContentEditorWebpart

How this WORKS in SharePoint:

  1. In order to know as how the table styles are loaded for the Content Editor WebPart; best is to use Fiddler tool (found at
  2. https://www.fiddlertool.com
  3. )
  4. After we have click the RichText Editor; we are with the writ up space with many formatting options
  5. Click on the "Insert Table". A new window opens up with table format.
  6. This window is designed using RTE2ETable.aspx (located at ..\12\TEMPLATE\LAYOUTS)
  7. Now, if we look at the javascript files which are been added to this page; we find 4 files of which we will drill down 2
    • BForm.js (located at ..\12\TEMPLATE\LAYOUTS\1033)
    • HtmlEditor.js (located at ..\12\TEMPLATE\LAYOUTS\1033)
  8. Assumption: We clicked on "Insert Table" option & the Page: RTE2ETable.aspx opens. Now, how the table templates are build. They are build using javascript. Flow is below:
    1. Calls Method: RTE2_InsertTable, when page loads(File: HtmlEditor.js)
      Description:
      • This method calls the RTE2_GetReservedTableStyleRules method
    2. Method: RTE2_GetReservedTableStyleRules (File: HtmlEditor.js)
      Description:
      • This method calls RTE_GetReservedStyleRules
      • It passes the default css file for the table formats (i.e. HtmlEditorTableFormats.css) as the parameter
    3. Method: RTE_GetReservedStyleRules (File: BForm.js)
      Description:
      • It gets the collection of all the stylesheets and there by calls the method: RTE_GetReservedStyleRulesFromStyleSheet for each of them in a loop
    4. Method: RTE_GetReservedStyleRulesFromStyleSheet (File: BForm.js)
      Description:
      • This is the method which adds all the classes of the stylesheets into the array
      • Check out the conditional check for the prefix to be numeric in this method

Sample_Files.zip