Implementing an Edit Properties Handler for Author Mode
The EditPropertiesHandler extension point allows you to present a
specialized dialog box when the action of double-clicking an element tag is intercepted
in
Author mode. For example, you could use it to present a dialog box
that allows the user to editing the properties of an image.
How to Implement an EditPropertiesHandler
To implement your own EditPropertiesHandler, follow this procedure:
- Implement the
ro.sync.ecss.extensions.api.EditPropertiesHandlerinterface. - To instruct Oxygen XML Editor plugin to use this newly created implementation, use
either of the following methods:
- If you have configured an extensions bundle, you can return the
EditPropertiesHandlerimplementation using thero.sync.ecss.extensions.api.ExtensionsBundle.createEditPropertiesHandler()method. - Specify the
EditPropertiesHandlerin the Author edit properties handler individual extension in the Extensions tab of the Document Type configuration dialog box for your particular document type.
- If you have configured an extensions bundle, you can return the
Example
The following example illustrates an implementation for presenting a simple properties
editing dialog box when a user double-clicks an image tag in
Author mode (with tags displayed from the 
Tags display mode
drop-down menu):
public class CustomEditPropertiesHandler implements EditPropertiesHandler {
/**
* @see ro.sync.ecss.extensions.api.Extension#getDescription()
*/
@Override
public String getDescription() {
return "Sample implementation that handles properties for a table element.";
}
/**
* @see ro.sync.ecss.extensions.api.EditPropertiesHandler#canEditProperties
(ro.sync.ecss.extensions.api.node.AuthorNode)
*/
@Override
public boolean canEditProperties(AuthorNode authorNode) {
// If this node is an image element we can edit its properties.
return "image".equals(authorNode.getDisplayName());
}
/**
* @see ro.sync.ecss.extensions.api.EditPropertiesHandler#editProperties
(ro.sync.ecss.extensions.api.node.AuthorNode,
ro.sync.ecss.extensions.api.AuthorAccess)
*/
@Override
public void editProperties(AuthorNode authorNode, AuthorAccess authorAccess) {
// If we receive this call then it surely an image.
AuthorElement imageElement = (AuthorElement) authorNode;
String currentValue = "";
AttrValue altValue = imageElement.getAttribute("alt");
if (altValue != null) {
currentValue = altValue.getValue();
}
String newValue = JOptionPane.showInputDialog(
(Component) authorAccess.getWorkspaceAccess().getParentFrame(),
"Alternate text",
currentValue);
if (newValue != null) {
authorAccess.getDocumentController().setAttribute
("alt", new AttrValue(newValue), imageElement);
}
}
}
Example result: If a user were to double-click an image tag icon
(
) in Author mode, the
following dialog box would be displayed that allows the user to edit the alternate
text property for the image:
