content: /*
   * Copyright (C) 2006 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
   *
   * 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 android.text.style;
  
  import android.annotation.IntRange;
  import android.annotation.Px;
  
  /**
   * Paragraph affecting span that changes the position of the tab with respect to
   * the leading margin of the line. <code>TabStopSpan</code> will only affect the first tab
   * encountered on the first line of the text.
   */
  public interface TabStopSpan extends ParagraphStyle {
  
      /**
       * Returns the offset of the tab stop from the leading margin of the line, in pixels.
       *
       * @return the offset, in pixels
       */
      int getTabStop();
  
      /**
       * The default implementation of TabStopSpan that allows setting the offset of the tab stop
       * from the leading margin of the first line of text.
       * <p>
       * Let's consider that we have the following text: <i>"\tParagraph text beginning with tab."</i>
       * and we want to move the tab stop with 100px. This can be achieved like this:
       * <pre>
       * SpannableString string = new SpannableString("\tParagraph text beginning with tab.");
       * string.setSpan(new TabStopSpan.Standard(100), 0, string.length(),
       * Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);</pre>
       * <img src="{@docRoot}reference/android/images/text/style/tabstopspan.png" />
       * <figcaption>Text with a tab stop and a <code>TabStopSpan</code></figcaption>
       */
      class Standard implements TabStopSpan {
  
          @Px
          private int mTabOffset;
  
          /**
           * Constructs a {@link TabStopSpan.Standard} based on an offset.
           *
           * @param offset the offset of the tab stop from the leading margin of
           *               the line, in pixels
           */
          public Standard(@IntRange(from = 0) int offset) {
              mTabOffset = offset;
          }
  
          @Override
          public int getTabStop() {
              return mTabOffset;
          }
      }
  }
  