summaryrefslogtreecommitdiff
path: root/fpdfsdk/pwl
diff options
context:
space:
mode:
Diffstat (limited to 'fpdfsdk/pwl')
-rw-r--r--fpdfsdk/pwl/cpwl_caret.cpp15
-rw-r--r--fpdfsdk/pwl/cpwl_edit.cpp12
-rw-r--r--fpdfsdk/pwl/cpwl_wnd.cpp20
3 files changed, 36 insertions, 11 deletions
diff --git a/fpdfsdk/pwl/cpwl_caret.cpp b/fpdfsdk/pwl/cpwl_caret.cpp
index b1040bc2e3..99d2e2ece7 100644
--- a/fpdfsdk/pwl/cpwl_caret.cpp
+++ b/fpdfsdk/pwl/cpwl_caret.cpp
@@ -59,6 +59,8 @@ void CPWL_Caret::TimerProc() {
} else {
m_bFlash = !m_bFlash;
InvalidateRect(nullptr);
+ // Note, |this| may no longer be viable at this point. If more work needs
+ // to be done, add an observer.
}
}
@@ -77,15 +79,24 @@ void CPWL_Caret::SetCaret(bool bVisible,
m_ptFoot = ptFoot;
m_bFlash = true;
Move(m_rcInvalid, false, true);
+ // Note, |this| may no longer be viable at this point. If more work
+ // needs to be done, add an observer.
}
} else {
m_ptHead = ptHead;
m_ptFoot = ptFoot;
EndTimer();
BeginTimer(PWL_CARET_FLASHINTERVAL);
+
+ ObservedPtr observer(this);
CPWL_Wnd::SetVisible(true);
+ if (!observer)
+ return;
+
m_bFlash = true;
Move(m_rcInvalid, false, true);
+ // Note, |this| may no longer be viable at this point. If more work needs
+ // to be done, add an observer.
}
} else {
m_ptHead = CFX_PointF();
@@ -94,6 +105,8 @@ void CPWL_Caret::SetCaret(bool bVisible,
if (IsVisible()) {
EndTimer();
CPWL_Wnd::SetVisible(false);
+ // Note, |this| may no longer be viable at this point. If more work needs
+ // to be done, add an observer.
}
}
}
@@ -111,4 +124,6 @@ void CPWL_Caret::InvalidateRect(CFX_FloatRect* pRect) {
} else {
CPWL_Wnd::InvalidateRect(pRect);
}
+ // Note, |this| may no longer be viable at this point. If more work needs
+ // to be done, add an observer.
}
diff --git a/fpdfsdk/pwl/cpwl_edit.cpp b/fpdfsdk/pwl/cpwl_edit.cpp
index c71dbe4be0..0b74a1896e 100644
--- a/fpdfsdk/pwl/cpwl_edit.cpp
+++ b/fpdfsdk/pwl/cpwl_edit.cpp
@@ -331,16 +331,24 @@ bool CPWL_Edit::OnRButtonUp(const CFX_PointF& point, uint32_t nFlag) {
}
void CPWL_Edit::OnSetFocus() {
+ ObservedPtr observed_ptr(this);
SetEditCaret(true);
+ if (!observed_ptr)
+ return;
+
if (!IsReadOnly()) {
- if (CPWL_Wnd::FocusHandlerIface* pFocusHandler = GetFocusHandler())
+ if (CPWL_Wnd::FocusHandlerIface* pFocusHandler = GetFocusHandler()) {
pFocusHandler->OnSetFocus(this);
+ if (!observed_ptr)
+ return;
+ }
}
m_bFocus = true;
}
void CPWL_Edit::OnKillFocus() {
- ObservedPtr observed_ptr = ObservedPtr(this);
+ ObservedPtr observed_ptr(this);
+
CPWL_ScrollBar* pScroll = GetVScrollBar();
if (pScroll && pScroll->IsVisible()) {
pScroll->SetVisible(false);
diff --git a/fpdfsdk/pwl/cpwl_wnd.cpp b/fpdfsdk/pwl/cpwl_wnd.cpp
index 1c1512e296..4e4abd2017 100644
--- a/fpdfsdk/pwl/cpwl_wnd.cpp
+++ b/fpdfsdk/pwl/cpwl_wnd.cpp
@@ -86,19 +86,21 @@ class CPWL_MsgControl : public CFX_Observable<CPWL_MsgControl> {
void SetFocus(CPWL_Wnd* pWnd) {
m_aKeyboardPath.clear();
- if (pWnd) {
- m_pMainKeyboardWnd = pWnd;
- CPWL_Wnd* pParent = pWnd;
- while (pParent) {
- m_aKeyboardPath.push_back(pParent);
- pParent = pParent->GetParentWindow();
- }
- pWnd->OnSetFocus();
+ if (!pWnd)
+ return;
+
+ m_pMainKeyboardWnd = pWnd;
+ CPWL_Wnd* pParent = pWnd;
+ while (pParent) {
+ m_aKeyboardPath.push_back(pParent);
+ pParent = pParent->GetParentWindow();
}
+ // Note, pWnd may get destroyed in the OnSetFocus call.
+ pWnd->OnSetFocus();
}
void KillFocus() {
- ObservedPtr observed_ptr = ObservedPtr(this);
+ ObservedPtr observed_ptr(this);
if (!m_aKeyboardPath.empty())
if (CPWL_Wnd* pWnd = m_aKeyboardPath[0])
pWnd->OnKillFocus();