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Web Browser project mostly exposes interfaces, hiding all of the CEF3 implementation and technically allowing us to slot in another web system if necessary. Normal process will be to request a browser window interface from the web browser singleton. There is also an implementation of ISlateViewport so that it can be displayed via an SViewport. The UnrealCEFSubProcess executable is needed for CEF3 to run additional processes for rendering etc. I don't expect this to change very often so it should hopefully just be built once and distributed, since we can't currently specify a program dependency for other modules. Added a CEF3Utils project to share .dll loading code between web browser and the separate sub process executable. [CL 2317298 by Matthew Griffin in Main branch]
116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
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#include "WebBrowserPrivatePCH.h"
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#include "WebBrowserHandler.h"
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#include "WebBrowserWindow.h"
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#include "WebBrowserSingleton.h"
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#define LOCTEXT_NAMESPACE "WebBrowserHandler"
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#if WITH_CEF3
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FWebBrowserHandler::FWebBrowserHandler()
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{
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}
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void FWebBrowserHandler::OnTitleChange(CefRefPtr<CefBrowser> Browser, const CefString& Title)
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{
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if (BrowserWindow.IsValid())
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{
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BrowserWindow.Pin()->SetTitle(Title);
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}
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}
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void FWebBrowserHandler::OnAfterCreated(CefRefPtr<CefBrowser> Browser)
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{
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if (BrowserWindow.IsValid())
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{
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BrowserWindow.Pin()->BindCefBrowser(Browser);
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}
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}
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void FWebBrowserHandler::OnBeforeClose(CefRefPtr<CefBrowser> Browser)
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{
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if (BrowserWindow.IsValid())
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{
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BrowserWindow.Pin()->BindCefBrowser(nullptr);
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}
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}
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void FWebBrowserHandler::OnLoadError(CefRefPtr<CefBrowser> Browser,
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CefRefPtr<CefFrame> Frame,
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CefLoadHandler::ErrorCode InErrorCode,
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const CefString& ErrorText,
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const CefString& FailedUrl)
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{
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// Don't display an error for downloaded files.
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if (InErrorCode == ERR_ABORTED)
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return;
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// Display a load error message.
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FFormatNamedArguments Args;
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Args.Add(TEXT("FailedUrl"), FText::FromString(FailedUrl.c_str()));
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Args.Add(TEXT("ErrorText"), FText::FromString(ErrorText.c_str()));
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Args.Add(TEXT("ErrorCode"), FText::AsNumber(InErrorCode));
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FText ErrorMsg = FText::Format(LOCTEXT("WebBrowserLoadError", "Failed to load URL {FailedUrl} with error {ErrorText} ({ErrorCode})."), Args);
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FString ErrorHTML = TEXT("<html><body bgcolor=\"white\"><h2>")
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+ ErrorMsg.ToString()
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+ TEXT("</h2></body></html>");
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Frame->LoadString(*ErrorHTML, FailedUrl);
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}
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bool FWebBrowserHandler::GetViewRect(CefRefPtr<CefBrowser> Browser, CefRect& Rect)
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{
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if (BrowserWindow.IsValid())
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{
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return BrowserWindow.Pin()->GetViewRect(Rect);
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}
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return false;
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}
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void FWebBrowserHandler::OnPaint(CefRefPtr<CefBrowser> Browser,
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PaintElementType Type,
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const RectList& DirtyRects,
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const void* Buffer,
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int Width, int Height)
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{
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if (BrowserWindow.IsValid())
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{
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BrowserWindow.Pin()->OnPaint(Type, DirtyRects, Buffer, Width, Height);
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}
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}
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void FWebBrowserHandler::OnCursorChange(CefRefPtr<CefBrowser> Browser, CefCursorHandle Cursor)
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{
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if (BrowserWindow.IsValid())
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{
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BrowserWindow.Pin()->OnCursorChange(Cursor);
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}
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}
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bool FWebBrowserHandler::OnBeforeResourceLoad(CefRefPtr<CefBrowser> Browser, CefRefPtr<CefFrame> Frame, CefRefPtr<CefRequest> Request)
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{
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const FString LanguageHeaderText(TEXT("Accept-Language"));
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const FString LocaleCode = FWebBrowserSingleton::GetCurrentLocaleCode();
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CefRequest::HeaderMap HeaderMap;
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Request->GetHeaderMap(HeaderMap);
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auto LanguageHeader = HeaderMap.find(*LanguageHeaderText);
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if (LanguageHeader != HeaderMap.end())
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{
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(*LanguageHeader).second = *LocaleCode;
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}
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else
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{
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HeaderMap.insert(std::pair<CefString, CefString>(*LanguageHeaderText, *LocaleCode));
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}
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Request->SetHeaderMap(HeaderMap);
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return false;
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}
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void FWebBrowserHandler::SetBrowserWindow(TSharedPtr<FWebBrowserWindow> InBrowserWindow)
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{
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BrowserWindow = InBrowserWindow;
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}
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#endif
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#undef LOCTEXT_NAMESPACE
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