org.xwiki.gwt.wysiwyg.client.plugin.indent.exec
Class AbstractListExecutable

java.lang.Object
  org.xwiki.gwt.user.client.ui.rta.cmd.internal.AbstractRichTextAreaExecutable
      org.xwiki.gwt.user.client.ui.rta.cmd.internal.AbstractSelectionExecutable
          org.xwiki.gwt.wysiwyg.client.plugin.indent.exec.AbstractListExecutable

All Implemented Interfaces:

Executable

Direct Known Subclasses:

IndentExecutable, OutdentExecutable

public abstract class AbstractListExecutable
extends org.xwiki.gwt.user.client.ui.rta.cmd.internal.AbstractSelectionExecutable

Superclass for all the list executables, such as indent and outdent executables, to handle frequent list operations.

Version:

$Id: AbstractListExecutable.java 26786 2010-02-07 16:46:17Z mflorea $

Field Summary

protected static java.lang.String	LIST_ITEM_TAG List item element name.
protected static java.lang.String	ORDERED_LIST_TAG Ordered list element name.
protected static java.lang.String	UNORDERED_LIST_TAG Unordered list element name.

Fields inherited from class org.xwiki.gwt.user.client.ui.rta.cmd.internal.AbstractSelectionExecutable

cache, domUtils

Fields inherited from class org.xwiki.gwt.user.client.ui.rta.cmd.internal.AbstractRichTextAreaExecutable

rta

Constructor Summary

AbstractListExecutable(RichTextArea rta)
Creates a new executable to be executed on the specified rich text area.

Method Summary

protected boolean	canExecute(Element listItem) Checks if this command can be executed on a single list item.
protected abstract void	execute(Element listItem) Actually executes the operation on a single list item.
boolean	execute(java.lang.String param)
protected abstract boolean	executeOnMultipleItems(Range range, boolean perform) Executes this list operation on all items in the non-collapsed selection.
protected Element	getListItem(Range range)
boolean	isEnabled()
protected boolean	isList(com.google.gwt.dom.client.Node node) Checks if the passed node is a list node: either an ordered list or an unordered one.

Methods inherited from class org.xwiki.gwt.user.client.ui.rta.cmd.internal.AbstractSelectionExecutable

getParameter, hasValidSelection, isExecuted

Methods inherited from class org.xwiki.gwt.user.client.ui.rta.cmd.internal.AbstractRichTextAreaExecutable

isSupported

Methods inherited from class java.lang.Object

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

Field Detail

LIST_ITEM_TAG

protected static final java.lang.String LIST_ITEM_TAG

List item element name.

See Also:

Constant Field Values

UNORDERED_LIST_TAG

protected static final java.lang.String UNORDERED_LIST_TAG

Unordered list element name.

See Also:

Constant Field Values

ORDERED_LIST_TAG

protected static final java.lang.String ORDERED_LIST_TAG

Ordered list element name.

See Also:

Constant Field Values

Constructor Detail

AbstractListExecutable

public AbstractListExecutable(RichTextArea rta)

Creates a new executable to be executed on the specified rich text area.

Parameters:

rta - the execution target

Method Detail

getListItem

protected Element getListItem(Range range)

Parameters:

range - a DOM range

Returns:

the list item in which the given range is positioned, or null if no such thing exists

isList

protected boolean isList(com.google.gwt.dom.client.Node node)

Checks if the passed node is a list node: either an ordered list or an unordered one. If the passed node is null, false is returned.

Parameters:

node - the node to check if it's a list or not

Returns:

true if the passed node is a list node, false otherwise (including the case when the node is null).

execute

public boolean execute(java.lang.String param)

execute

protected abstract void execute(Element listItem)

Actually executes the operation on a single list item. This should be called only after canExecute(Element) on the same list item returns true.

Parameters:

listItem - the list item to execute the operation on

canExecute

protected boolean canExecute(Element listItem)

Checks if this command can be executed on a single list item.

Parameters:

listItem - the list item to check if the command can be executed on

Returns:

true if the command can be executed, false otherwise

executeOnMultipleItems

protected abstract boolean executeOnMultipleItems(Range range,
                                                  boolean perform)

Executes this list operation on all items in the non-collapsed selection. The perform parameter specifies if the operation is actually performed or just checked to be possible (while this kind of parameters are not good practice, it's the best way right now to make sure we use the same detection algorithm in the #execute(RichTextArea, String) and #isEnabled(RichTextArea) functions).

Parameters:

range - the current range to execute the operation on

perform - true if the operation is to be actually executed, false if it's only to be checked

Returns:

true if at least one of the items in the selection was affected, false otherwise.

isEnabled

public boolean isEnabled()

Specified by:

isEnabled in interface Executable

Overrides:

isEnabled in class org.xwiki.gwt.user.client.ui.rta.cmd.internal.AbstractSelectionExecutable

See Also:

isEnabled()