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      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.ui.tree;
     18 
     19 import com.android.ide.eclipse.adt.AdtPlugin;
     20 import com.android.ide.eclipse.adt.internal.editors.IconFactory;
     21 import com.android.ide.eclipse.adt.internal.editors.descriptors.ElementDescriptor;
     22 import com.android.ide.eclipse.adt.internal.editors.uimodel.UiElementNode;
     23 
     24 import org.eclipse.jface.viewers.ILabelProvider;
     25 import org.eclipse.jface.viewers.ILabelProviderListener;
     26 import org.eclipse.swt.graphics.Image;
     27 
     28 /**
     29  * UiModelTreeLabelProvider is a trivial implementation of {@link ILabelProvider}
     30  * where elements are expected to derive from {@link UiElementNode} or
     31  * from {@link ElementDescriptor}.
     32  *
     33  * It is used by both the master tree viewer and by the list in the Add... selection dialog.
     34  */
     35 public class UiModelTreeLabelProvider implements ILabelProvider {
     36 
     37     public UiModelTreeLabelProvider() {
     38     }
     39 
     40     /**
     41      * Returns the element's logo with a fallback on the android logo.
     42      */
     43     @Override
     44     public Image getImage(Object element) {
     45         ElementDescriptor desc = null;
     46         UiElementNode node = null;
     47 
     48         if (element instanceof ElementDescriptor) {
     49             desc = (ElementDescriptor) element;
     50         } else if (element instanceof UiElementNode) {
     51             node = (UiElementNode) element;
     52             desc = node.getDescriptor();
     53         }
     54 
     55         if (desc != null) {
     56             Image img = desc.getCustomizedIcon();
     57             if (img != null) {
     58                 if (node != null && node.hasError()) {
     59                     return IconFactory.getInstance().addErrorIcon(img);
     60                 } else {
     61                     return img;
     62                 }
     63             }
     64         }
     65 
     66         return AdtPlugin.getAndroidLogo();
     67     }
     68 
     69     /**
     70      * Uses UiElementNode.shortDescription for the label for this tree item.
     71      */
     72     @Override
     73     public String getText(Object element) {
     74         if (element instanceof ElementDescriptor) {
     75             ElementDescriptor desc = (ElementDescriptor) element;
     76             return desc.getUiName();
     77         } else if (element instanceof UiElementNode) {
     78             UiElementNode node = (UiElementNode) element;
     79             return node.getShortDescription();
     80         }
     81         return element.toString();
     82     }
     83 
     84     @Override
     85     public void addListener(ILabelProviderListener listener) {
     86         // pass
     87     }
     88 
     89     @Override
     90     public void dispose() {
     91         // pass
     92     }
     93 
     94     @Override
     95     public boolean isLabelProperty(Object element, String property) {
     96         // pass
     97         return false;
     98     }
     99 
    100     @Override
    101     public void removeListener(ILabelProviderListener listener) {
    102         // pass
    103     }
    104 }
    105 
    106 
    107