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Java > Open Source Codes > org > apache > directory > ldapstudio > browser > common > filtereditor > FilterTextHover


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one
3  * or more contributor license agreements. See the NOTICE file
4  * distributed with this work for additional information
5  * regarding copyright ownership. The ASF licenses this file
6  * to you under the Apache License, Version 2.0 (the
7  * "License"); you may not use this file except in compliance
8  * with the License. You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing,
13  * software distributed under the License is distributed on an
14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15  * KIND, either express or implied. See the License for the
16  * specific language governing permissions and limitations
17  * under the License.
18  *
19  */

20
21 package org.apache.directory.ldapstudio.browser.common.filtereditor;
22
23
24 import org.apache.directory.ldapstudio.browser.core.model.filter.LdapFilter;
25 import org.apache.directory.ldapstudio.browser.core.model.filter.parser.LdapFilterParser;
26 import org.apache.directory.ldapstudio.browser.core.model.filter.parser.LdapFilterToken;
27
28 import org.eclipse.jface.text.IRegion;
29 import org.eclipse.jface.text.ITextHover;
30 import org.eclipse.jface.text.ITextViewer;
31 import org.eclipse.jface.text.Region;
32 import org.eclipse.jface.text.source.ISourceViewer;
33
34
35 public class FilterTextHover implements ITextHover
36 {
37
38     private ISourceViewer sourceViewer;
39
40     private LdapFilterParser parser;
41
42
43     public FilterTextHover( ISourceViewer sourceViewer, LdapFilterParser parser )
44     {
45         super();
46         this.sourceViewer = sourceViewer;
47         this.parser = parser;
48     }
49
50
51     public String JavaDoc getHoverInfo( ITextViewer textViewer, IRegion hoverRegion )
52     {
53         LdapFilter[] invalidFilters = this.parser.getModel().getInvalidFilters();
54         for ( int i = 0; i < invalidFilters.length; i++ )
55         {
56             if ( invalidFilters[i].getStartToken() != null )
57             {
58                 int start = invalidFilters[i].getStartToken().getOffset();
59                 int stop = invalidFilters[i].getStopToken() != null ? invalidFilters[i].getStopToken().getOffset()
60                     + invalidFilters[i].getStopToken().getLength() : start
61                     + invalidFilters[i].getStartToken().getLength();
62                 if ( start <= hoverRegion.getOffset() && hoverRegion.getOffset() < stop )
63                 {
64                     return invalidFilters[i].getInvalidCause();
65                 }
66             }
67         }
68
69         LdapFilterToken[] tokens = this.parser.getModel().getTokens();
70         for ( int i = 0; i < tokens.length; i++ )
71         {
72             if ( tokens[i].getType() == LdapFilterToken.ERROR )
73             {
74
75                 int start = tokens[i].getOffset();
76                 int stop = start + tokens[i].getLength();
77                 if ( start <= hoverRegion.getOffset() && hoverRegion.getOffset() < stop )
78                 {
79                     return "Invalid characters";
80                 }
81             }
82         }
83         return null;
84     }
85
86
87     public IRegion getHoverRegion( ITextViewer textViewer, int offset )
88     {
89         return new Region( offset, 1 );
90     }
91
92 }
93
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