org.xwiki.gwt.wysiwyg.client.plugin.link.exec
Class LinkExecutableUtils

java.lang.Object
  org.xwiki.gwt.wysiwyg.client.plugin.link.exec.LinkExecutableUtils

public class LinkExecutableUtils
extends Object

Utility class to perform functions associated to link executables, such as detecting the selected anchor. We have this as static function in a distinct class since there is no way to insert this on both the CreateLinkExecutable and UnlinkExecutable hierarchies.

Version:

$Id$

Field Summary

static String

ANCHOR_TAG_NAME The tag name of the anchor element.

Constructor Summary

protected

LinkExecutableUtils() Protected constructor.

Method Summary

static com.google.gwt.dom.client.AnchorElement

getSelectedAnchor(RichTextArea rta) Returns the currently selected anchor element in the passed RichTextArea, as the user perceives the selection.

Methods inherited from class java.lang.Object

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

Field Detail

ANCHOR_TAG_NAME

public static final String ANCHOR_TAG_NAME

The tag name of the anchor element.

See Also:

Constant Field Values

Constructor Detail

LinkExecutableUtils

protected LinkExecutableUtils()

Protected constructor.

Method Detail

getSelectedAnchor

public static com.google.gwt.dom.client.AnchorElement getSelectedAnchor(RichTextArea rta)

Returns the currently selected anchor element in the passed RichTextArea, as the user perceives the selection. The algorithm used is as follows:

• find anchor ancestor of the first leaf of the selection. If the first leaf is the selection start container and the offset is at the end, then eliminate this first leaf and analyze the second
• find anchor ancestor of the last leaf of the selection. If the last leaf is the end container and the selection starts at its very beginning, skip this and analyze the previous leaf
• is the two ancestor anchors are not null and are the same, this anchor is the selected anchor

Parameters:

rta - the rich text area whose selection to test

Returns:

the anchor in which the current selection is found