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      1 /*
      2  * Copyright (C) 2011 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 package com.android.ide.eclipse.adt.internal.editors.layout.gre;
     17 
     18 import static com.android.SdkConstants.ANDROID_NS_NAME_PREFIX;
     19 import static com.android.SdkConstants.ANDROID_URI;
     20 
     21 import com.android.ide.eclipse.adt.internal.editors.IconFactory;
     22 import com.android.ide.eclipse.adt.internal.editors.layout.descriptors.ViewElementDescriptor;
     23 import com.android.ide.eclipse.adt.internal.editors.layout.gle2.SimpleAttribute;
     24 import com.android.ide.eclipse.adt.internal.editors.layout.gle2.SimpleElement;
     25 
     26 import org.eclipse.swt.graphics.Image;
     27 import org.w3c.dom.Element;
     28 
     29 /**
     30  * Special version of {@link ViewElementDescriptor} which is initialized by the palette
     31  * with specific metadata for how to instantiate particular variations of an existing
     32  * {@link ViewElementDescriptor} with initial values.
     33  */
     34 public class PaletteMetadataDescriptor extends ViewElementDescriptor {
     35     private String mInitString;
     36     private String mIconName;
     37 
     38     public PaletteMetadataDescriptor(ViewElementDescriptor descriptor, String displayName,
     39             String initString, String iconName) {
     40         super(descriptor.getXmlName(),
     41                 displayName,
     42                 descriptor.getFullClassName(),
     43                 descriptor.getTooltip(),
     44                 descriptor.getSdkUrl(),
     45                 descriptor.getAttributes(),
     46                 descriptor.getLayoutAttributes(),
     47                 descriptor.getChildren(), descriptor.getMandatory() == Mandatory.MANDATORY);
     48         mInitString = initString;
     49         mIconName = iconName;
     50         setSuperClass(descriptor.getSuperClassDesc());
     51     }
     52 
     53     /**
     54      * Returns a String which contains a comma separated list of name=value tokens,
     55      * where the name can start with "android:" to indicate a property in the android namespace,
     56      * or no prefix for plain attributes.
     57      *
     58      * @return the initialization string, which can be empty but never null
     59      */
     60     public String getInitializedAttributes() {
     61         return mInitString != null ? mInitString : ""; //$NON-NLS-1$
     62     }
     63 
     64     @Override
     65     public Image getGenericIcon() {
     66         if (mIconName != null) {
     67             IconFactory factory = IconFactory.getInstance();
     68             Image icon = factory.getIcon(mIconName);
     69             if (icon != null) {
     70                 return icon;
     71             }
     72         }
     73 
     74         return super.getGenericIcon();
     75     }
     76 
     77     /**
     78      * Initializes a new {@link SimpleElement} with the palette initialization
     79      * configuration
     80      *
     81      * @param element the new element to initialize
     82      */
     83     public void initializeNew(SimpleElement element) {
     84         initializeNew(element, null);
     85     }
     86 
     87     /**
     88      * Initializes a new {@link Element} with the palette initialization configuration
     89      *
     90      * @param element the new element to initialize
     91      */
     92     public void initializeNew(Element element) {
     93         initializeNew(null, element);
     94     }
     95 
     96     private void initializeNew(SimpleElement simpleElement, Element domElement) {
     97         String initializedAttributes = mInitString;
     98         if (initializedAttributes != null && initializedAttributes.length() > 0) {
     99             for (String s : initializedAttributes.split(",")) { //$NON-NLS-1$
    100                 String[] nameValue = s.split("="); //$NON-NLS-1$
    101                 String name = nameValue[0];
    102                 String value = nameValue[1];
    103                 String nameSpace = ""; //$NON-NLS-1$
    104                 if (name.startsWith(ANDROID_NS_NAME_PREFIX)) {
    105                     name = name.substring(ANDROID_NS_NAME_PREFIX.length());
    106                     nameSpace = ANDROID_URI;
    107                 }
    108 
    109                 if (simpleElement != null) {
    110                     SimpleAttribute attr = new SimpleAttribute(nameSpace, name, value);
    111                     simpleElement.addAttribute(attr);
    112                 }
    113 
    114                 if (domElement != null) {
    115                     domElement.setAttributeNS(nameSpace, name, value);
    116                 }
    117             }
    118         }
    119     }
    120 }
    121