1 /* 2 * Copyright (C) 2007 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.descriptors; 18 19 import com.android.ide.eclipse.adt.internal.editors.uimodel.UiAttributeNode; 20 import com.android.ide.eclipse.adt.internal.editors.uimodel.UiElementNode; 21 22 23 /** 24 * Describes an XMLNS attribute that is hidden. 25 * <p/> 26 * Such an attribute has no user interface and no corresponding {@link UiAttributeNode}. 27 * It also has a single constant default value. 28 * <p/> 29 * When loading an XML, we'll ignore this attribute. 30 * However when writing a new XML, we should always write this attribute. 31 * <p/> 32 * Currently this is used for the xmlns:android attribute in the manifest element. 33 */ 34 public final class XmlnsAttributeDescriptor extends AttributeDescriptor { 35 36 /** 37 * URI of the reserved "xmlns" prefix, as described in 38 * http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/namespaces-algorithms.html#normalizeDocumentAlgo 39 */ 40 public final static String XMLNS_URI = "http://www.w3.org/2000/xmlns/"; //$NON-NLS-1$ 41 42 /** The "xmlns" attribute name */ 43 public static final String XMLNS = "xmlns"; //$NON-NLS-1$ 44 45 /** The "xmlns:" attribute prefix used for namespace declarations */ 46 public static final String XMLNS_COLON = "xmlns:"; //$NON-NLS-1$ 47 48 private String mValue; 49 50 XmlnsAttributeDescriptor(String defaultPrefix, String value)51 public XmlnsAttributeDescriptor(String defaultPrefix, String value) { 52 super(defaultPrefix, XMLNS_URI, null /* info */); 53 mValue = value; 54 } 55 56 /** 57 * Returns the value of this specialized attribute descriptor, which is the URI associated 58 * to the declared namespace prefix. 59 */ getValue()60 public String getValue() { 61 return mValue; 62 } 63 64 /** 65 * Returns the "xmlns" prefix that is always used by this node for its namespace URI. 66 * This is defined by the XML specification. 67 */ getXmlNsPrefix()68 public String getXmlNsPrefix() { 69 return XmlnsAttributeDescriptor.XMLNS; 70 } 71 72 /** 73 * Returns the fully-qualified attribute name, namely "xmlns:xxx" where xxx is 74 * the defaultPrefix passed in the constructor. 75 */ getXmlNsName()76 public String getXmlNsName() { 77 return getXmlNsPrefix() + ":" + getXmlLocalName(); //$NON-NLS-1$ 78 } 79 80 /** 81 * @return Always returns null. {@link XmlnsAttributeDescriptor} has no user interface. 82 */ 83 @Override createUiNode(UiElementNode uiParent)84 public UiAttributeNode createUiNode(UiElementNode uiParent) { 85 return null; 86 } 87 } 88