如何仅丢弃CKEditor撤消堆栈的最后一个元素? [英] How to discard only the last element of CKEditor undo stack?

问题描述

是否可以仅删除CKEditor撤消堆栈中的最后一个快照，或者可以将其替换为另一个快照.我应该自己实现吗?

Is there a way to remove only the last snapshot in the CKEditor undo stack or can i replace it with another.Should i implement it on my own?

示例:

第1步

第2步-应该删除并替换为第3步(在给定情况下)

Step 2 --should be removed and replaced with step 3 (On given situation)

第3步-应该成为第2步

Step 3 -- should become step 2

仅当发生特殊事件时，此功能才可用.

This feature should be available only if special event occurs.

推荐答案

如果您的撤消快照是用户操作的结果，请按照以下方式操作:

If your undo snapshots are a result of user actions, following this way:

1. 第1步.
2. 第2步.
3. CKEDITOR.instances.editor.fire( 'lockSnapshot' )
4. 第3步.
5. CKEDITOR.instances.editor.fire( 'unlockSnapshot' )

当然，您必须检测正在发生的事情并在正确的时间触发正确的事件.

Of course, you have to detect what's going on and fire the right event at the right time.

如果对内容的更改是通过代码完成的，则 editor#updateSnapshot 事件会更好:

If changes to the content are done from code, editor#updateSnapshot event would even be better:

function() {
    editor.fire( 'saveSnapshot' );
    editor.document.body.append(...);
    // Makes new changes following the last undo snapshot a part of it.
    editor.fire( 'updateSnapshot' );
    ..
}

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