github/electron
1
1
Fork 0
mirror of https://github.com/electron/electron.git synced 2026-02-06 05:05:16 -05:00
Code Issues Packages Projects Releases Wiki Activity

Fix crash that happens when the PDF viewer is refreshed.

Browse Source 
The root cause is the PdfViewerHandler instanceis destroyed but not removed from the list of observer in WebContentsZoomController
This commit is contained in:
Ahmed Mohamed Ali
2017-10-19 16:27:08 +02:00
parent 44f91e12e1
commit 9f3cfa2dbd
2 changed files with 19 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
atom/browser/ui/webui/pdf_viewer_handler.cc
View File

@@ -58,7 +58,9 @@ void PopulateStreamInfo(base::DictionaryValue* stream_info,
PdfViewerHandler::PdfViewerHandler(const std::string& src)
: stream_(nullptr), original_url_(src) {}
PdfViewerHandler::~PdfViewerHandler() {}
PdfViewerHandler::~PdfViewerHandler() {
RemoveObserver();
}
void PdfViewerHandler::SetPdfResourceStream(content::StreamInfo* stream) {
stream_ = stream;
@@ -90,15 +92,11 @@ void PdfViewerHandler::RegisterMessages() {
}
void PdfViewerHandler::OnJavascriptAllowed() {
auto zoom_controller = WebContentsZoomController::FromWebContents(
web_ui()->GetWebContents());
zoom_controller->AddObserver(this);
AddObserver();
}
void PdfViewerHandler::OnJavascriptDisallowed() {
auto zoom_controller = WebContentsZoomController::FromWebContents(
web_ui()->GetWebContents());
zoom_controller->RemoveObserver(this);
RemoveObserver();
}
void PdfViewerHandler::Initialize(const base::ListValue* args) {
@@ -214,4 +212,16 @@ void PdfViewerHandler::OnZoomLevelChanged(content::WebContents* web_contents,
}
}
void PdfViewerHandler::AddObserver() {
auto zoom_controller =
WebContentsZoomController::FromWebContents(web_ui()->GetWebContents());
zoom_controller->AddObserver(this);
}
void PdfViewerHandler::RemoveObserver() {
auto zoom_controller =
WebContentsZoomController::FromWebContents(web_ui()->GetWebContents());
zoom_controller->RemoveObserver(this);
}
} // namespace atom

3
atom/browser/ui/webui/pdf_viewer_handler.h
View File

@@ -45,7 +45,8 @@ class PdfViewerHandler : public content::WebUIMessageHandler,
void Reload(const base::ListValue* args);
void OnZoomLevelChanged(content::WebContents* web_contents, double level,
bool is_temporary);
void AddObserver();
void RemoveObserver();
std::unique_ptr<base::Value> initialize_callback_id_;
content::StreamInfo* stream_;
std::string original_url_;