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/*
 * Copyright 2006 Google Inc.
 * 
 * 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 com.google.gwt.user.client.ui.impl;

import com.google.gwt.dom.client.Element;

/**
 * Implementation class used by {@link com.google.gwt.user.client.ui.TextBox}.
 *
 * Deprecated, may be flattened into TextBox, as this has no subclasses.
 */
@Deprecated
public class TextBoxImpl {

  public native int getCursorPos(Element elem) /*-{
    // Guard needed for FireFox.
     try{
       return elem.selectionStart;
     } catch (e) {
       return 0;
     }
  }-*/;

  public native int getSelectionLength(Element elem) /*-{
    // Guard needed for FireFox.
    try{
      return elem.selectionEnd - elem.selectionStart;
    } catch (e) {
      return 0;
    }
  }-*/;

  public int getTextAreaCursorPos(Element elem) {
    return getCursorPos(elem);
  }

  public int getTextAreaSelectionLength(Element elem) {
    return getSelectionLength(elem);
  }

  public native void setSelectionRange(Element elem, int pos, int length) /*-{
    try {
      elem.setSelectionRange(pos, pos + length);
    } catch (e) {
      // Firefox throws exception if TextBox is not visible, even if attached
    }
  }-*/;
}