Class ContentChangeEvent

java.lang.Object

java.util.EventObject

com.vaadin.flow.component.ComponentEvent<VaadinCKEditor>

com.wontlost.ckeditor.event.ContentChangeEvent

All Implemented Interfaces:

Serializable

public class ContentChangeEvent
extends com.vaadin.flow.component.ComponentEvent<VaadinCKEditor>

Content change event. Fired when the editor content changes, providing the content before and after the change.

Usage example:

editor.addContentChangeListener(event -> {
    // Calculate difference
    int charDiff = event.getNewContent().length() - event.getOldContent().length();
    updateCharacterCount(charDiff);

    // Mark as unsaved
    markAsUnsaved();
});

Note: This event differs from Vaadin's ValueChangeListener:

• ContentChangeEvent - fires on every content change (real-time)
• ValueChangeListener - fires on blur or sync

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ContentChangeEvent.ChangeSource	Content change source.

Field Summary

Fields inherited from class EventObject

source

Constructor Summary

Constructors

Constructor	Description
ContentChangeEvent(VaadinCKEditor source, boolean fromClient, String oldContent, String newContent, ContentChangeEvent.ChangeSource changeSource)	Create a content change event.

Method Summary

Modifier and Type	Method	Description
ContentChangeEvent.ChangeSource	getChangeSource()	Get the source of the change.
int	getLengthDelta()	Get the content length delta.
String	getNewContent()	Get the content after the change.
String	getOldContent()	Get the content before the change.
boolean	hasChanged()	Check whether the content has actually changed.

Methods inherited from class com.vaadin.flow.component.ComponentEvent

getSource, isFromClient, unregisterListener

Methods inherited from class EventObject

toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

ContentChangeEvent

public ContentChangeEvent(VaadinCKEditor source,
 boolean fromClient,
 String oldContent,
 String newContent,
 ContentChangeEvent.ChangeSource changeSource)

Create a content change event.

Parameters:

source - the editor component that fired the event

fromClient - whether the event originated from the client

oldContent - the content before the change

newContent - the content after the change

changeSource - the source of the change

Method Details

getOldContent

public String getOldContent()

Get the content before the change.

Returns:

the old content

getNewContent

public String getNewContent()

Get the content after the change.

Returns:

the new content

getChangeSource

public ContentChangeEvent.ChangeSource getChangeSource()

Get the source of the change.

Returns:

the change source type

hasChanged

public boolean hasChanged()

Check whether the content has actually changed.

Returns:

true if the content is different

getLengthDelta

public int getLengthDelta()

Get the content length delta.

Returns:

character count change (positive means increase, negative means decrease)