TinyMCE - Writing plugin that insert content on top

I am trying to write a plugin for TinyMCE with a feature to add content to the beginning of the content. I know the following command which will insert content at the current locati开发者_JAVA百科on of the cursor. How do I force it to insert it at the beginning of the content?

tinyMCEPopup.editor.execCommand('mceInsertRawHTML', false, "halo world");
tinyMCEPopup.editor.execCommand('mceInsertContent', false, "halo world");

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For this you will need to set the cursor location to the beginning of the editor content. you may use the function setCursorLocation:

 ed.selection.setCursorLocation(ed.getBody().firstChild, 0); // node to set the cursor to, second param is offset

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The setCursorLocation will move the cursor to the position of the first html element's first content character. This means that if your current html content looks like: <div>abcd</div> then the setCursorLocation will move the cursor between the <div> and the abcd. In some cases this is not acceptable. So another solution would be: ed.setContent('yourText' + ed.getContent()).