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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.eclipse.org/org/documents/epl-v10.php
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ide.eclipse.adt.internal.editors.values;
import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.android.ide.eclipse.adt.AdtConstants;
import com.android.ide.eclipse.adt.AdtPlugin;
import com.android.ide.eclipse.adt.internal.editors.common.CommonXmlDelegate;
import com.android.ide.eclipse.adt.internal.editors.common.CommonXmlEditor;
import com.android.ide.eclipse.adt.internal.editors.descriptors.ElementDescriptor;
import com.android.ide.eclipse.adt.internal.editors.values.descriptors.ValuesDescriptors;
import com.android.resources.ResourceFolderType;
import com.android.xml.AndroidXPathFactory;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.ui.PartInitException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
/**
* Multi-page form editor for /res/values XML files.
*/
public class ValuesEditorDelegate extends CommonXmlDelegate {
public static class Creator implements IDelegateCreator {
@Override
@SuppressWarnings("unchecked")
public ValuesEditorDelegate createForFile(
@NonNull CommonXmlEditor delegator,
@Nullable ResourceFolderType type) {
if (ResourceFolderType.VALUES == type) {
return new ValuesEditorDelegate(delegator);
}
return null;
}
}
/**
* Old standalone-editor ID.
* Use {@link CommonXmlEditor#ID} instead.
*/
public static final String LEGACY_EDITOR_ID =
AdtConstants.EDITORS_NAMESPACE + ".resources.ResourcesEditor"; //$NON-NLS-1$
/**
* Creates the form editor for resources XML files.
*/
private ValuesEditorDelegate(CommonXmlEditor editor) {
super(editor, new ValuesContentAssist());
editor.addDefaultTargetListener();
}
// ---- Base Class Overrides ----
/**
* Create the various form pages.
*/
@Override
public void delegateCreateFormPages() {
try {
getEditor().addPage(new ValuesTreePage(getEditor()));
} catch (PartInitException e) {
AdtPlugin.log(IStatus.ERROR, "Error creating nested page"); //$NON-NLS-1$
AdtPlugin.getDefault().getLog().log(e.getStatus());
}
}
/**
* Processes the new XML Model, which XML root node is given.
*
* @param xml_doc The XML document, if available, or null if none exists.
*/
@Override
public void delegateXmlModelChanged(Document xml_doc) {
// init the ui root on demand
delegateInitUiRootNode(false /*force*/);
getUiRootNode().setXmlDocument(xml_doc);
if (xml_doc != null) {
ElementDescriptor resources_desc =
ValuesDescriptors.getInstance().getElementDescriptor();
try {
XPath xpath = AndroidXPathFactory.newXPath();
Node node = (Node) xpath.evaluate("/" + resources_desc.getXmlName(), //$NON-NLS-1$
xml_doc,
XPathConstants.NODE);
// Node can be null _or_ it must be the element we searched for.
assert node == null || node.getNodeName().equals(resources_desc.getXmlName());
// Refresh the manifest UI node and all its descendants
getUiRootNode().loadFromXmlNode(node);
} catch (XPathExpressionException e) {
AdtPlugin.log(e, "XPath error when trying to find '%s' element in XML.", //$NON-NLS-1$
resources_desc.getXmlName());
}
}
}
/**
* Creates the initial UI Root Node, including the known mandatory elements.
* @param force if true, a new UiRootNode is recreated even if it already exists.
*/
@Override
public void delegateInitUiRootNode(boolean force) {
// The manifest UI node is always created, even if there's no corresponding XML node.
if (getUiRootNode() == null || force) {
ElementDescriptor resources_desc =
ValuesDescriptors.getInstance().getElementDescriptor();
setUiRootNode(resources_desc.createUiNode());
getUiRootNode().setEditor(getEditor());
onDescriptorsChanged();
}
}
// ---- Local methods ----
private void onDescriptorsChanged() {
// nothing to be done, as the descriptor are static for now.
// FIXME Update when the descriptors are not static
}
}
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