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The JSExtensionWithFunction demo now sends a text message back to the main process

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This commit is contained in:
Salvador Díaz Fau
2018-03-21 11:21:41 +01:00
parent 7242c181a4
commit 665957e132
3 changed files with 42 additions and 2 deletions
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17
demos/JavaScript/JSExtensionWithFunction/uJSExtensionWithFunction.dfm
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@ -56,11 +56,26 @@ object JSExtensionWithFunctionFrm: TJSExtensionWithFunctionFrm
Left = 0
Top = 30
Width = 978
Height = 559
Height = 540
Align = alClient
TabOrder = 1
ExplicitHeight = 559
end
object StatusBar1: TStatusBar
Left = 0
Top = 570
Width = 978
Height = 19
Panels = <
item
Width = 500
end>
ExplicitLeft = 336
ExplicitTop = 544
ExplicitWidth = 0
end
object Chromium1: TChromium
OnProcessMessageReceived = Chromium1ProcessMessageReceived
OnBeforePopup = Chromium1BeforePopup
OnAfterCreated = Chromium1AfterCreated
Left = 32

16
demos/JavaScript/JSExtensionWithFunction/uJSExtensionWithFunction.pas
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@ -59,6 +59,7 @@ type
CEFWindowParent1: TCEFWindowParent;
Chromium1: TChromium;
Timer1: TTimer;
StatusBar1: TStatusBar;
procedure FormShow(Sender: TObject);
procedure GoBtnClick(Sender: TObject);
procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
@ -70,6 +71,9 @@ type
var popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo;
var client: ICefClient; var settings: TCefBrowserSettings;
var noJavascriptAccess: Boolean; out Result: Boolean);
procedure Chromium1ProcessMessageReceived(Sender: TObject;
const browser: ICefBrowser; sourceProcess: TCefProcessId;
const message: ICefProcessMessage; out Result: Boolean);
protected
procedure BrowserCreatedMsg(var aMessage : TMessage); message CEF_AFTERCREATED;
procedure WMMove(var aMessage : TWMMove); message WM_MOVE;
@ -143,6 +147,18 @@ begin
Result := (targetDisposition in [WOD_NEW_FOREGROUND_TAB, WOD_NEW_BACKGROUND_TAB, WOD_NEW_POPUP, WOD_NEW_WINDOW]);
end;
procedure TJSExtensionWithFunctionFrm.Chromium1ProcessMessageReceived(
Sender: TObject; const browser: ICefBrowser;
sourceProcess: TCefProcessId; const message: ICefProcessMessage;
out Result: Boolean);
begin
if (message.Name = TEST_MESSAGE_NAME) then
begin
StatusBar1.Panels[0].Text := DateTimeToStr(now) + ' - ' + message.ArgumentList.GetString(0); // this doesn't create/destroy components
Result := True;
end
end;
procedure TJSExtensionWithFunctionFrm.FormShow(Sender: TObject);
begin
// GlobalCEFApp.GlobalContextInitialized has to be TRUE before creating any browser

11
demos/JavaScript/JSExtensionWithFunction/uMyV8Handler.pas
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@ -42,7 +42,10 @@ unit uMyV8Handler;
interface
uses
uCEFTypes, uCEFInterfaces, uCEFv8Value, uCEFv8Handler;
uCEFTypes, uCEFInterfaces, uCEFv8Value, uCEFProcessMessage, uCEFv8Handler, uCEFv8Context;
const
TEST_MESSAGE_NAME = 'test_message';
type
TMyV8Handler = class(TCefv8HandlerOwn)
@ -57,9 +60,15 @@ function TMyV8Handler.Execute(const name : ustring;
const arguments : TCefv8ValueArray;
var retval : ICefv8Value;
var exception : ustring): Boolean;
var
msg: ICefProcessMessage;
begin
if (name = 'myfunc') then
begin
msg := TCefProcessMessageRef.New(TEST_MESSAGE_NAME);
msg.ArgumentList.SetString(0, 'Message received!');
TCefv8ContextRef.Current.Browser.SendProcessMessage(PID_BROWSER, msg);
retval := TCefv8ValueRef.NewString('My Value!');
Result := True;
end