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Diffstat (limited to 'eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/manifest/model/UiManifestElementNode.java')
| -rw-r--r-- | eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/manifest/model/UiManifestElementNode.java | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/manifest/model/UiManifestElementNode.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/manifest/model/UiManifestElementNode.java new file mode 100644 index 000000000..0151d4d46 --- /dev/null +++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/manifest/model/UiManifestElementNode.java @@ -0,0 +1,132 @@ +/* + * 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.manifest.model; + +import com.android.SdkConstants; +import com.android.ide.eclipse.adt.internal.editors.descriptors.ElementDescriptor; +import com.android.ide.eclipse.adt.internal.editors.manifest.descriptors.AndroidManifestDescriptors; +import com.android.ide.eclipse.adt.internal.editors.manifest.descriptors.ManifestElementDescriptor; +import com.android.ide.eclipse.adt.internal.editors.uimodel.UiAttributeNode; +import com.android.ide.eclipse.adt.internal.editors.uimodel.UiElementNode; +import com.android.ide.eclipse.adt.internal.sdk.AndroidTargetData; + +import org.w3c.dom.Element; + +/** + * Represents an XML node that can be modified by the user interface in the XML editor. + * <p/> + * Each tree viewer used in the application page's parts needs to keep a model representing + * each underlying node in the tree. This interface represents the base type for such a node. + * <p/> + * Each node acts as an intermediary model between the actual XML model (the real data support) + * and the tree viewers or the corresponding page parts. + * <p/> + * Element nodes don't contain data per se. Their data is contained in their attributes + * as well as their children's attributes, see {@link UiAttributeNode}. + * <p/> + * The structure of a given {@link UiElementNode} is declared by a corresponding + * {@link ElementDescriptor}. + */ +public final class UiManifestElementNode extends UiElementNode { + + /** + * Creates a new {@link UiElementNode} described by a given {@link ElementDescriptor}. + * + * @param elementDescriptor The {@link ElementDescriptor} for the XML node. Cannot be null. + */ + public UiManifestElementNode(ManifestElementDescriptor elementDescriptor) { + super(elementDescriptor); + } + + /** + * Computes a short string describing the UI node suitable for tree views. + * Uses the element's attribute "android:name" if present, or the "android:label" one + * followed by the element's name if not repeated. + * + * @return A short string describing the UI node suitable for tree views. + */ + @Override + public String getShortDescription() { + AndroidTargetData target = getAndroidTarget(); + AndroidManifestDescriptors manifestDescriptors = null; + if (target != null) { + manifestDescriptors = target.getManifestDescriptors(); + } + + String name = getDescriptor().getUiName(); + + if (manifestDescriptors != null && + getXmlNode() != null && + getXmlNode() instanceof Element && + getXmlNode().hasAttributes()) { + + // Application and Manifest nodes have a special treatment: they are unique nodes + // so we don't bother trying to differentiate their strings and we fall back to + // just using the UI name below. + ElementDescriptor desc = getDescriptor(); + if (desc != manifestDescriptors.getManifestElement() && + desc != manifestDescriptors.getApplicationElement()) { + Element elem = (Element) getXmlNode(); + String attr = _Element_getAttributeNS(elem, + SdkConstants.NS_RESOURCES, + AndroidManifestDescriptors.ANDROID_NAME_ATTR); + if (attr == null || attr.length() == 0) { + attr = _Element_getAttributeNS(elem, + SdkConstants.NS_RESOURCES, + AndroidManifestDescriptors.ANDROID_LABEL_ATTR); + } + if (attr != null && attr.length() > 0) { + // If the ui name is repeated in the attribute value, don't use it. + // Typical case is to avoid ".pkg.MyActivity (Activity)". + if (attr.contains(name)) { + return attr; + } else { + return String.format("%1$s (%2$s)", attr, name); + } + } + } + } + + return String.format("%1$s", name); + } + + /** + * Retrieves an attribute value by local name and namespace URI. + * <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>] + * , applications must use the value <code>null</code> as the + * <code>namespaceURI</code> parameter for methods if they wish to have + * no namespace. + * <p/> + * Note: This is a wrapper around {@link Element#getAttributeNS(String, String)}. + * In some versions of webtools, the getAttributeNS implementation crashes with an NPE. + * This wrapper will return null instead. + * + * @see Element#getAttributeNS(String, String) + * @see <a href="https://bugs.eclipse.org/bugs/show_bug.cgi?id=318108">https://bugs.eclipse.org/bugs/show_bug.cgi?id=318108</a> + * @return The result from {@link Element#getAttributeNS(String, String)} or or an empty string. + */ + private String _Element_getAttributeNS(Element element, + String namespaceURI, + String localName) { + try { + return element.getAttributeNS(namespaceURI, localName); + } catch (Exception ignore) { + return ""; + } + } +} + |