1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_sc.hxx"
26
27
28
29 #include <com/sun/star/util/XModifyListener.hpp>
30 #include <tools/debug.hxx>
31
32 #include "listenercalls.hxx"
33
34 using namespace com::sun::star;
35
36 //------------------------------------------------------------------------
37
ScUnoListenerCalls()38 ScUnoListenerCalls::ScUnoListenerCalls()
39 {
40 }
41
~ScUnoListenerCalls()42 ScUnoListenerCalls::~ScUnoListenerCalls()
43 {
44 DBG_ASSERT( aEntries.empty(), "unhandled listener calls remaining" );
45 }
46
Add(const uno::Reference<util::XModifyListener> & rListener,const lang::EventObject & rEvent)47 void ScUnoListenerCalls::Add( const uno::Reference<util::XModifyListener>& rListener,
48 const lang::EventObject& rEvent )
49 {
50 if ( rListener.is() )
51 aEntries.push_back( ScUnoListenerEntry( rListener, rEvent ) );
52 }
53
ExecuteAndClear()54 void ScUnoListenerCalls::ExecuteAndClear()
55 {
56 // Execute all stored calls and remove them from the list.
57 // During each modified() call, Add may be called again.
58 // These new calls are executed here, too.
59
60 if (!aEntries.empty())
61 {
62 std::list<ScUnoListenerEntry>::iterator aItr(aEntries.begin());
63 std::list<ScUnoListenerEntry>::iterator aEndItr(aEntries.end());
64 while ( aItr != aEndItr )
65 {
66 ScUnoListenerEntry aEntry = *aItr;
67 try
68 {
69 aEntry.xListener->modified( aEntry.aEvent );
70 }
71 catch ( uno::RuntimeException )
72 {
73 // the listener is an external object and may throw a RuntimeException
74 // for reasons we don't know
75 }
76
77 // New calls that are added during the modified() call are appended to the end
78 // of aEntries, so the loop will catch them, too (as long as erase happens
79 // after modified).
80
81 aItr = aEntries.erase(aItr);
82 }
83 }
84 }
85
86