How can I retrieve the element that the user is currently typing in within a designMode iframe?

I have a situation where I have an iframe that allows users to type and edit various divs within it. However, there is one specific div that should not be editable by the user. I have tried to prevent users from clicking on the div using JavaScript:

document.getElementById('mydiv').addEventListener('mousedown', function(event) {
  event.preventDefault();
  return false;
}, true);

Unfortunately, this method does not fully restrict users from editing the content as they can still navigate to the div using keyboard arrow keys. I attempted to handle focus events on the div:

document.getElementById('mydiv').addEventListener('focus', function(event) {
  ...
}, true);

However, this approach did not work as expected. I then tried to prevent keypress events on the div:

document.getElementById('mydiv').addEventListener('keydown', function(event) {
  event.preventDefault();
  return false;
}, true);

Once again, this method did not provide the desired outcome. I even explored attaching the callback to the document itself:

document.addEventListener('keydown', function(event) {
  ...
}, true);

This worked for triggering the callback, but I need a way to specifically cancel the event only when the target element is the problematic div.

If anyone has any suggestions or ideas on how to achieve this goal, please feel free to share them.

Answer №1

To simplify your approach and avoid issues with older browsers like Firefox 2, consider using contentEditable instead of designMode. Apply contentEditable to each editable <div> element, while leaving the non-editable <div> elements as is.

<div contenteditable="true">Editable content here</div>

<div>Non-editable content here</div>

<div contenteditable="true">More editable content here</div>

This strategy will help you avoid unnecessary compatibility issues and work with browser behavior rather than against it.

Answer №2

To make elements editable, simply add the 'editable' class and remove it when editing is not allowed.

YUI offers an easy way to check if an element has the 'editable' class: YAHOO.util.Dom.hasClass( yourEl, 'editable' );

In your event handler, if the target element does not have the 'editable' class, take appropriate action such as canceling the event or preventing its default behavior.

-d

For more information, you can visit this link: http://developer.yahoo.com/yui/examples/event/event-delegation.html

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