diff options
Diffstat (limited to 'fpdfsdk/fsdk_baseform.cpp')
| -rw-r--r-- | fpdfsdk/fsdk_baseform.cpp | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/fpdfsdk/fsdk_baseform.cpp b/fpdfsdk/fsdk_baseform.cpp index 287c5cf17e..1b1d40b3a0 100644 --- a/fpdfsdk/fsdk_baseform.cpp +++ b/fpdfsdk/fsdk_baseform.cpp @@ -28,6 +28,7 @@ #include "fpdfsdk/javascript/ijs_context.h" #include "fpdfsdk/javascript/ijs_runtime.h" #include "fpdfsdk/pdfwindow/PWL_Utils.h" +#include "third_party/base/stl_util.h" #ifdef PDF_ENABLE_XFA #include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h" @@ -49,6 +50,22 @@ PDFSDK_FieldAction::PDFSDK_FieldAction() bFieldFull(FALSE), bRC(TRUE) {} +CPDFSDK_Widget::Observer::Observer(CPDFSDK_Widget** pWatchedPtr) + : m_pWatchedPtr(pWatchedPtr) { + (*m_pWatchedPtr)->AddObserver(this); +} + +CPDFSDK_Widget::Observer::~Observer() { + if (m_pWatchedPtr) + (*m_pWatchedPtr)->RemoveObserver(this); +} + +void CPDFSDK_Widget::Observer::OnWidgetDestroyed() { + ASSERT(m_pWatchedPtr); + *m_pWatchedPtr = nullptr; + m_pWatchedPtr = nullptr; +} + CPDFSDK_Widget::CPDFSDK_Widget(CPDF_Annot* pAnnot, CPDFSDK_PageView* pPageView, CPDFSDK_InterForm* pInterForm) @@ -64,7 +81,20 @@ CPDFSDK_Widget::CPDFSDK_Widget(CPDF_Annot* pAnnot, { } -CPDFSDK_Widget::~CPDFSDK_Widget() {} +CPDFSDK_Widget::~CPDFSDK_Widget() { + for (auto* pObserver : m_Observers) + pObserver->OnWidgetDestroyed(); +} + +void CPDFSDK_Widget::AddObserver(Observer* pObserver) { + ASSERT(!pdfium::ContainsKey(m_Observers, pObserver)); + m_Observers.insert(pObserver); +} + +void CPDFSDK_Widget::RemoveObserver(Observer* pObserver) { + ASSERT(pdfium::ContainsKey(m_Observers, pObserver)); + m_Observers.erase(pObserver); +} #ifdef PDF_ENABLE_XFA CXFA_FFWidget* CPDFSDK_Widget::GetMixXFAWidget() const { |