1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Eclipse Public License, Version 1.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.eclipse.org/org/documents/epl-v10.php 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.ide.eclipse.adt.internal.editors; 18 19 import static com.android.SdkConstants.ANDROID_URI; 20 import static com.android.SdkConstants.ATTR_ID; 21 import static com.android.SdkConstants.ATTR_LAYOUT; 22 import static com.android.SdkConstants.ATTR_NAME; 23 import static com.android.SdkConstants.ATTR_SRC; 24 import static com.android.SdkConstants.ATTR_TEXT; 25 import static com.android.SdkConstants.DRAWABLE_PREFIX; 26 import static com.android.SdkConstants.LAYOUT_RESOURCE_PREFIX; 27 28 import org.eclipse.swt.graphics.Image; 29 import org.eclipse.wst.xml.ui.internal.contentoutline.JFaceNodeLabelProvider; 30 import org.w3c.dom.DOMException; 31 import org.w3c.dom.Element; 32 33 /** 34 * Label provider for the XML outlines and quick outlines: Use our own icons, 35 * when available, and and include the most important attribute (id, name, or 36 * text) 37 */ 38 @SuppressWarnings("restriction") 39 // XML UI API 40 class OutlineLabelProvider extends JFaceNodeLabelProvider { 41 @Override getImage(Object element)42 public Image getImage(Object element) { 43 if (element instanceof Element) { 44 Element e = (Element) element; 45 String tagName = e.getTagName(); 46 IconFactory factory = IconFactory.getInstance(); 47 Image img = factory.getIcon(tagName, null); 48 if (img != null) { 49 return img; 50 } 51 } 52 return super.getImage(element); 53 } 54 55 @Override getText(Object element)56 public String getText(Object element) { 57 String text = super.getText(element); 58 if (element instanceof Element) { 59 Element e = (Element) element; 60 String id = getAttributeNS(e, ANDROID_URI, ATTR_ID); 61 if (id == null || id.length() == 0) { 62 id = getAttributeNS(e, ANDROID_URI, ATTR_NAME); 63 if (id == null || id.length() == 0) { 64 id = e.getAttribute(ATTR_NAME); 65 if (id == null || id.length() == 0) { 66 id = getAttributeNS(e, ANDROID_URI, ATTR_TEXT); 67 if (id != null && id.length() > 15) { 68 id = id.substring(0, 12) + "..."; 69 } 70 if (id == null || id.length() == 0) { 71 id = getAttributeNS(e, ANDROID_URI, ATTR_SRC); 72 if (id != null && id.length() > 0) { 73 if (id.startsWith(DRAWABLE_PREFIX)) { 74 id = id.substring(DRAWABLE_PREFIX.length()); 75 } 76 } else { 77 id = e.getAttribute(ATTR_LAYOUT); 78 if (id != null && id.length() > 0) { 79 if (id.startsWith(LAYOUT_RESOURCE_PREFIX)) { 80 id = id.substring(LAYOUT_RESOURCE_PREFIX.length()); 81 } 82 } 83 } 84 } 85 } 86 } 87 } 88 if (id != null && id.length() > 0) { 89 return text + ": " + id; //$NON-NLS-1$ 90 } 91 } 92 return text; 93 } 94 95 /** 96 * Wrapper around {@link Element#getAttributeNS(String, String)}. 97 * <p/> 98 * The implementation used in Eclipse's XML editor sometimes internally 99 * throws an NPE instead of politely returning null. 100 * 101 * @see Element#getAttributeNS(String, String) 102 */ getAttributeNS(Element e, String uri, String name)103 private String getAttributeNS(Element e, String uri, String name) throws DOMException { 104 try { 105 return e.getAttributeNS(uri, name); 106 } catch (NullPointerException ignore) { 107 return null; 108 } 109 } 110 } 111