You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
libreoffice/0001-Resolves-rhbz-842292-c...

145 lines
5.7 KiB

From c29af1572ad15ac5199a09e5812fb8354c165329 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
Date: Wed, 22 Aug 2012 14:20:32 +0100
Subject: [PATCH] Resolves: rhbz#842292 crash in calling callback whose
instance was deleted
Change-Id: I4cc04d59f48b42cc105703daa9983dd7c9f7af62
---
.../controller/SlsDragAndDropContext.cxx | 6 +++--
.../slidesorter/controller/SlsScrollBarManager.cxx | 8 ++++---
.../controller/SlsSelectionFunction.cxx | 26 ++++++++++++++++++----
.../inc/controller/SlsScrollBarManager.hxx | 2 ++
4 files changed, 33 insertions(+), 9 deletions(-)
diff --git a/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.cxx b/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.cxx
index b8234b5..c1bf497 100644
--- a/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.cxx
+++ b/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.cxx
@@ -100,11 +100,13 @@ void DragAndDropContext::UpdatePosition (
::boost::shared_ptr<InsertionIndicatorHandler> pInsertionIndicatorHandler (
mpTargetSlideSorter->GetController().GetInsertionIndicatorHandler());
- if ( ! (bAllowAutoScroll
+ bool bDoAutoScroll = bAllowAutoScroll
&& mpTargetSlideSorter->GetController().GetScrollBarManager().AutoScroll(
rMousePosition,
::boost::bind(
- &DragAndDropContext::UpdatePosition, this, rMousePosition, eMode, false))))
+ &DragAndDropContext::UpdatePosition, this, rMousePosition, eMode, false));
+
+ if (!bDoAutoScroll)
{
pInsertionIndicatorHandler->UpdatePosition(aMouseModelPosition, eMode);
diff --git a/sd/source/ui/slidesorter/controller/SlsScrollBarManager.cxx b/sd/source/ui/slidesorter/controller/SlsScrollBarManager.cxx
index a45f640..4a2d808 100644
--- a/sd/source/ui/slidesorter/controller/SlsScrollBarManager.cxx
+++ b/sd/source/ui/slidesorter/controller/SlsScrollBarManager.cxx
@@ -617,13 +617,15 @@
}
}
- maAutoScrollFunctor = ::boost::function<void(void)>();
+ clearAutoScrollFunctor();
mbIsAutoScrollActive = false;
return false;
}
-
-
+void ScrollBarManager::clearAutoScrollFunctor()
+{
+ maAutoScrollFunctor = ::boost::function<void(void)>();
+}
IMPL_LINK_NOARG(ScrollBarManager, AutoScrollTimeoutHandler)
{
diff --git a/sd/source/ui/slidesorter/controller/SlsSelectionFunction.cxx b/sd/source/ui/slidesorter/controller/SlsSelectionFunction.cxx
index 6217c07..16c23ad 100644
--- a/sd/source/ui/slidesorter/controller/SlsSelectionFunction.cxx
+++ b/sd/source/ui/slidesorter/controller/SlsSelectionFunction.cxx
@@ -273,6 +273,7 @@ private:
SelectionMode meSelectionMode;
Point maSecondCorner;
Pointer maSavedPointer;
+ bool mbAutoScrollInstalled;
sal_Int32 mnAnchorIndex;
sal_Int32 mnSecondIndex;
view::ButtonBar::Lock maButtonBarLock;
@@ -1503,6 +1504,7 @@ MultiSelectionModeHandler::MultiSelectionModeHandler (
meSelectionMode(SM_Normal),
maSecondCorner(rMouseModelPosition),
maSavedPointer(mrSlideSorter.GetContentWindow()->GetPointer()),
+ mbAutoScrollInstalled(false),
mnAnchorIndex(-1),
mnSecondIndex(-1),
maButtonBarLock(rSlideSorter)
@@ -1523,6 +1525,12 @@ void MultiSelectionModeHandler::Initialize(const sal_uInt32 nEventCode)
MultiSelectionModeHandler::~MultiSelectionModeHandler (void)
{
+ if (mbAutoScrollInstalled)
+ {
+ //a call to this handler's MultiSelectionModeHandler::UpdatePosition
+ //may be still waiting to be called back
+ mrSlideSorter.GetController().GetScrollBarManager().clearAutoScrollFunctor();
+ }
mrSlideSorter.GetContentWindow()->SetPointer(maSavedPointer);
}
@@ -1564,6 +1572,14 @@ void MultiSelectionModeHandler::ProcessEvent (
bool MultiSelectionModeHandler::ProcessButtonUpEvent (
SelectionFunction::EventDescriptor& rDescriptor)
{
+ if (mbAutoScrollInstalled)
+ {
+ //a call to this handler's MultiSelectionModeHandler::UpdatePosition
+ //may be still waiting to be called back
+ mrSlideSorter.GetController().GetScrollBarManager().clearAutoScrollFunctor();
+ mbAutoScrollInstalled = false;
+ }
+
if (Match(rDescriptor.mnEventCode, BUTTON_UP | LEFT_BUTTON | SINGLE_CLICK))
{
mrSelectionFunction.SwitchToNormalMode();
@@ -1620,16 +1636,18 @@ void MultiSelectionModeHandler::UpdatePosition (
SharedSdWindow pWindow (mrSlideSorter.GetContentWindow());
const Point aMouseModelPosition (pWindow->PixelToLogic(rMousePosition));
- if ( ! (bAllowAutoScroll && mrSlideSorter.GetController().GetScrollBarManager().AutoScroll(
+ bool bDoAutoScroll = bAllowAutoScroll && mrSlideSorter.GetController().GetScrollBarManager().AutoScroll(
rMousePosition,
::boost::bind(
&MultiSelectionModeHandler::UpdatePosition,
this,
rMousePosition,
- false))))
- {
+ false));
+
+ if (!bDoAutoScroll)
UpdateModelPosition(aMouseModelPosition);
- }
+
+ mbAutoScrollInstalled |= bDoAutoScroll;
}
diff --git a/sd/source/ui/slidesorter/inc/controller/SlsScrollBarManager.hxx b/sd/source/ui/slidesorter/inc/controller/SlsScrollBarManager.hxx
index 18807c1..41f3bde 100644
--- a/sd/source/ui/slidesorter/inc/controller/SlsScrollBarManager.hxx
+++ b/sd/source/ui/slidesorter/inc/controller/SlsScrollBarManager.hxx
@@ -172,6 +172,8 @@ public:
void StopAutoScroll (void);
+ void clearAutoScrollFunctor();
+
enum Orientation { Orientation_Horizontal, Orientation_Vertical };
enum Unit { Unit_Pixel, Unit_Slide };
/** Scroll the slide sorter by setting the thumbs of the scroll bars and
--
1.7.11.2