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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
      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 android.text.style;
     18 
     19 import android.text.TextPaint;
     20 import android.view.View;
     21 
     22 /**
     23  * If an object of this type is attached to the text of a TextView
     24  * with a movement method of LinkMovementMethod, the affected spans of
     25  * text can be selected.  If clicked, the {@link #onClick} method will
     26  * be called.
     27  */
     28 public abstract class ClickableSpan extends CharacterStyle implements UpdateAppearance {
     29 
     30     /**
     31      * Performs the click action associated with this span.
     32      */
     33     public abstract void onClick(View widget);
     34 
     35     /**
     36      * Makes the text underlined and in the link color.
     37      */
     38     @Override
     39     public void updateDrawState(TextPaint ds) {
     40         ds.setColor(ds.linkColor);
     41         ds.setUnderlineText(true);
     42     }
     43 }
     44