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Java > Open Source Codes > com > google > gwt > user > client > ui > impl > TextBoxImpl


1 /*
2  * Copyright 2006 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5  * use this file except in compliance with the License. You may obtain a copy of
6  * 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, WITHOUT
12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13  * License for the specific language governing permissions and limitations under
14  * the License.
15  */
16 package com.google.gwt.user.client.ui.impl;
17
18 import com.google.gwt.user.client.Element;
19
20 /**
21  * Implementation class used by {@link com.google.gwt.user.client.ui.TextBox}.
22  */
23 public class TextBoxImpl {
24
25   public native int getCursorPos(Element elem) /*-{
26     // Guard needed for FireFox.
27      try{
28        return elem.selectionStart;
29      } catch (e) {
30        return 0;
31      }
32   }-*/;
33
34   public native int getSelectionLength(Element elem) /*-{
35     // Guard needed for FireFox.
36     try{
37       return elem.selectionEnd - elem.selectionStart;
38     } catch (e) {
39       return 0;
40     }
41   }-*/;
42
43   public int getTextAreaCursorPos(Element elem) {
44     return getCursorPos(elem);
45   }
46
47   public native void setSelectionRange(Element elem, int pos, int length) /*-{
48     elem.setSelectionRange(pos, pos + length);
49   }-*/;
50 }
51
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