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/*
* Copyright (C) 2012 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;
import static com.android.SdkConstants.ANDROID_URI;
import static com.android.SdkConstants.ATTR_ID;
import static com.android.SdkConstants.ATTR_LAYOUT;
import static com.android.SdkConstants.ATTR_NAME;
import static com.android.SdkConstants.ATTR_SRC;
import static com.android.SdkConstants.ATTR_TEXT;
import static com.android.SdkConstants.DRAWABLE_PREFIX;
import static com.android.SdkConstants.LAYOUT_RESOURCE_PREFIX;
import static com.android.SdkConstants.VIEW;
import static com.android.SdkConstants.VIEW_TAG;
import org.eclipse.swt.graphics.Image;
import org.eclipse.wst.xml.ui.internal.contentoutline.JFaceNodeLabelProvider;
import org.w3c.dom.DOMException;
import org.w3c.dom.Element;
/**
* Label provider for the XML outlines and quick outlines: Use our own icons,
* when available, and and include the most important attribute (id, name, or
* text)
*/
@SuppressWarnings("restriction")
// XML UI API
class OutlineLabelProvider extends JFaceNodeLabelProvider {
@Override
public Image getImage(Object element) {
if (element instanceof Element) {
Element e = (Element) element;
String tagName = e.getTagName();
if (VIEW_TAG.equals(tagName)) {
// Can't have both view.png and View.png; issues on case sensitive vs
// case insensitive file systems
tagName = VIEW;
}
IconFactory factory = IconFactory.getInstance();
Image img = factory.getIcon(tagName, null);
if (img != null) {
return img;
}
}
return super.getImage(element);
}
@Override
public String getText(Object element) {
String text = super.getText(element);
if (element instanceof Element) {
Element e = (Element) element;
String id = getAttributeNS(e, ANDROID_URI, ATTR_ID);
if (id == null || id.length() == 0) {
id = getAttributeNS(e, ANDROID_URI, ATTR_NAME);
if (id == null || id.length() == 0) {
id = e.getAttribute(ATTR_NAME);
if (id == null || id.length() == 0) {
id = getAttributeNS(e, ANDROID_URI, ATTR_TEXT);
if (id != null && id.length() > 15) {
id = id.substring(0, 12) + "...";
}
if (id == null || id.length() == 0) {
id = getAttributeNS(e, ANDROID_URI, ATTR_SRC);
if (id != null && id.length() > 0) {
if (id.startsWith(DRAWABLE_PREFIX)) {
id = id.substring(DRAWABLE_PREFIX.length());
}
} else {
id = e.getAttribute(ATTR_LAYOUT);
if (id != null && id.length() > 0) {
if (id.startsWith(LAYOUT_RESOURCE_PREFIX)) {
id = id.substring(LAYOUT_RESOURCE_PREFIX.length());
}
}
}
}
}
}
}
if (id != null && id.length() > 0) {
return text + ": " + id; //$NON-NLS-1$
}
}
return text;
}
/**
* Wrapper around {@link Element#getAttributeNS(String, String)}.
* <p/>
* The implementation used in Eclipse's XML editor sometimes internally
* throws an NPE instead of politely returning null.
*
* @see Element#getAttributeNS(String, String)
*/
private String getAttributeNS(Element e, String uri, String name) throws DOMException {
try {
return e.getAttributeNS(uri, name);
} catch (NullPointerException ignore) {
return null;
}
}
}
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