1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20 #include <com/sun/star/util/XModifyListener.hpp>
21 #include <osl/diagnose.h>
22
23 #include <listenercalls.hxx>
24
25 using namespace com::sun::star;
26
ScUnoListenerCalls()27 ScUnoListenerCalls::ScUnoListenerCalls() {}
28
~ScUnoListenerCalls()29 ScUnoListenerCalls::~ScUnoListenerCalls()
30 {
31 OSL_ENSURE(aEntries.empty(), "unhandled listener calls remaining");
32 }
33
Add(const uno::Reference<util::XModifyListener> & rListener,const lang::EventObject & rEvent)34 void ScUnoListenerCalls::Add(const uno::Reference<util::XModifyListener>& rListener,
35 const lang::EventObject& rEvent)
36 {
37 if (rListener.is())
38 aEntries.emplace_back(rListener, rEvent);
39 }
40
ExecuteAndClear()41 void ScUnoListenerCalls::ExecuteAndClear()
42 {
43 // Execute all stored calls and remove them from the list.
44 // During each modified() call, Add may be called again.
45 // These new calls are executed here, too.
46
47 std::vector<ScUnoListenerEntry>::iterator aItr(aEntries.begin());
48 while (aItr != aEntries.end())
49 {
50 ScUnoListenerEntry aEntry = *aItr;
51 try
52 {
53 aEntry.xListener->modified(aEntry.aEvent);
54 }
55 catch (const uno::RuntimeException&)
56 {
57 // the listener is an external object and may throw a RuntimeException
58 // for reasons we don't know
59 }
60
61 // New calls that are added during the modified() call are appended to the end
62 // of aEntries, so the loop will catch them, too (as long as erase happens
63 // after modified).
64
65 aItr = aEntries.erase(aItr);
66 }
67 }
68
69 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
70