/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.validation.caret;
import java.util.Arrays;
import org.eclipse.jst.jsf.common.dom.TagIdentifier;
import org.eclipse.jst.jsf.core.internal.tld.ITLDConstants;
import org.eclipse.jst.pagedesigner.dom.EditModelQuery;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
/**
* Ensure the DnD of jsf component should be within f:view or f:subview.
*
* @author mengbo
*/
public class JSFRootContainerPositionRule extends DefaultPositionRule {
private final static int DEFAULT_MAX_DEPTH_SEARCH = 3;
/**
* TODO: this is not enough because it ignores the uri and keys on only
* the name of the tag.
*/
/*package*/ static final String[] JSF_ROOT_CONTAINERS = { "view", "subview" }; //$NON-NLS-1$ //$NON-NLS-2$
/**
* @param actionData
*/
public JSFRootContainerPositionRule(ActionData actionData) {
super(actionData);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.validation.caret.IPositionRule#hasEditableArea(org.eclipse.jst.pagedesigner.validation.caret.Target)
*/
public boolean hasEditableArea(Target target) {
Node node = target.getNode();
if (hasBasicContainers(EditModelQuery.getDocumentNode(node),DEFAULT_MAX_DEPTH_SEARCH)) {
ActionData actionData = getActionData();
if (actionData instanceof DropActionData) {
DropActionData dropActionData = (DropActionData) actionData;
TagIdentifier tagId =
(TagIdentifier) dropActionData.getDropData().getTagIdentifiers().get(0);
final String uri = tagId.getUri();
if (ITLDConstants.URI_JSF_HTML.equalsIgnoreCase(uri)
|| ITLDConstants.URI_JSF_CORE.equalsIgnoreCase(uri)) {
boolean result = EditModelQuery.isChild(
JSF_ROOT_CONTAINERS, node, true, false);
return result
|| EditModelQuery.getChild(node,
JSF_ROOT_CONTAINERS, 3, false) != null;
}
} else if (getActionData().getActionType() == ActionData.DATABINDING_DND) {
boolean result = EditModelQuery.isChild(JSF_ROOT_CONTAINERS,
node, true, false);
return result
|| EditModelQuery.getChild(node, JSF_ROOT_CONTAINERS, 3,
false) != null;
}
}
return super.isEditable(target);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.validation.caret.IPositionRule#isEditable(org.eclipse.jst.pagedesigner.validation.caret.Target)
*/
public boolean isEditable(Target target) {
boolean result = true;
Node node = target.getNode();
if (hasBasicContainers(EditModelQuery.getDocumentNode(node), DEFAULT_MAX_DEPTH_SEARCH)) {
ActionData actionData = getActionData();
if (actionData instanceof DropActionData) {
DropActionData dropActionData = (DropActionData) actionData;
TagIdentifier tagId =
(TagIdentifier) dropActionData.getDropData().getTagIdentifiers().get(0);
final String uri = tagId.getUri();
if (ITLDConstants.URI_JSF_HTML.equalsIgnoreCase(uri)
|| ITLDConstants.URI_JSF_CORE.equalsIgnoreCase(uri)) {
result = EditModelQuery.isChild(JSF_ROOT_CONTAINERS,
node, true, false);
}
} else if (getActionData().getActionType() == ActionData.DATABINDING_DND) {
result = EditModelQuery.isChild(JSF_ROOT_CONTAINERS, node,
true, false);
}
return result;
}
return super.isEditable(target);
}
/**
* @param document
* @param maxDepth
* @return the closest tag called "view" or "subview" to the root of document
* search to a maximum tag depth of maxDepth
*/
public static Node getBasicContainer(Document document, int maxDepth) {
Node node = EditModelQuery.getChild(document, JSF_ROOT_CONTAINERS, maxDepth,
false);
return node;
}
/**
* We need to see if body, view are there. and they should be at first or
* second level.
*
* @param document
* @param maxDepth
* @return true if document has a view and subview limited to a maximum search
* depth of maxDepth
*/
public static boolean hasBasicContainers(Document document, int maxDepth) {
return getBasicContainer(document, maxDepth) != null;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.validation.caret.IPositionRule#canReference(org.eclipse.jst.pagedesigner.validation.caret.Target,
* boolean)
*/
public boolean canReference(Target target, boolean atRight) {
Node node = target.getNode();
if (node.getLocalName() != null) {
// if the local name of the target is in the list of JSF root
// containers
if (Arrays.asList(JSF_ROOT_CONTAINERS).contains(
node.getLocalName().toLowerCase())) {
// verify that either the target is
return EditModelQuery.isChild(
RootContainerPositionRule.HTML_ROOT_CONTAINERS, node,
false, false)
|| EditModelQuery.isChild(JSF_ROOT_CONTAINERS, node,
false, false);
}
}
return super.canReference(target, atRight);
}
}