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Added TCEFSentinel to more demos

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- Check that all frames are valid before using them
- Added an error page to MiniBrowser.
This commit is contained in:
Salvador Díaz Fau
2019-10-13 18:50:23 +02:00
parent 9391d68ee0
commit 77121dc510
89 changed files with 1097 additions and 522 deletions
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33
demos/Lazarus/JavaScript/JSExtensionWithFunction/uMyV8Handler.pas
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@ -1,4 +1,4 @@
// ************************************************************************
// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
@ -63,19 +63,28 @@ function TMyV8Handler.Execute(const name : ustring;
var retval : ICefv8Value;
var exception : ustring): Boolean;
var
msg: ICefProcessMessage;
TempMessage : ICefProcessMessage;
TempFrame : ICefFrame;
begin
if (name = 'myfunc') then
begin
msg := TCefProcessMessageRef.New(TEST_MESSAGE_NAME);
msg.ArgumentList.SetString(0, 'Message received!');
TCefv8ContextRef.Current.Browser.MainFrame.SendProcessMessage(PID_BROWSER, msg);
Result := False;
retval := TCefv8ValueRef.NewString('My Value!');
Result := True;
end
else
Result := False;
try
if (name = 'myfunc') then
begin
TempMessage := TCefProcessMessageRef.New(TEST_MESSAGE_NAME);
TempMessage.ArgumentList.SetString(0, 'Message received!');
TempFrame := TCefv8ContextRef.Current.Browser.MainFrame;
if (TempFrame <> nil) and TempFrame.IsValid then
TempFrame.SendProcessMessage(PID_BROWSER, TempMessage);
retval := TCefv8ValueRef.NewString('My Value!');
Result := True;
end;
finally
TempMessage := nil;
end;
end;