mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 08:15:55 +01:00
1299a6f596
- Split the Lazarus demos directory into "Lazarus_Windows" and "Lazarus_Linux". - Added OSRExternalPumpBrowser and TinyBrowser2 demos to "Lazarus_Linux". - Set TBufferPanel.GetScreenScale as virtual. - Added DevTools to the SchemeRegistrationBrowser demo. - Modified the SchemeRegistrationBrowser demo to receive XMLHttpRequest requests from JavaScript.
579 lines
21 KiB
ObjectPascal
579 lines
21 KiB
ObjectPascal
// ************************************************************************
|
|
// ***************************** CEF4Delphi *******************************
|
|
// ************************************************************************
|
|
//
|
|
// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
|
|
// browser in Delphi applications.
|
|
//
|
|
// The original license of DCEF3 still applies to CEF4Delphi.
|
|
//
|
|
// For more information about CEF4Delphi visit :
|
|
// https://www.briskbard.com/index.php?lang=en&pageid=cef
|
|
//
|
|
// Copyright © 2020 Salvador Diaz Fau. All rights reserved.
|
|
//
|
|
// ************************************************************************
|
|
// ************ vvvv Original license and comments below vvvv *************
|
|
// ************************************************************************
|
|
(*
|
|
* Delphi Chromium Embedded 3
|
|
*
|
|
* Usage allowed under the restrictions of the Lesser GNU General Public License
|
|
* or alternatively the restrictions of the Mozilla Public License 1.1
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
|
|
* the specific language governing rights and limitations under the License.
|
|
*
|
|
* Unit owner : Henri Gourvest <hgourvest@gmail.com>
|
|
* Web site : http://www.progdigy.com
|
|
* Repository : http://code.google.com/p/delphichromiumembedded/
|
|
* Group : http://groups.google.com/group/delphichromiumembedded
|
|
*
|
|
* Embarcadero Technologies, Inc is not permitted to use or redistribute
|
|
* this source code without explicit permission.
|
|
*
|
|
*)
|
|
|
|
unit uJSEval;
|
|
|
|
{$MODE Delphi}
|
|
|
|
{$I cef.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
LCLIntf, LCLType, LMessages, Messages, SysUtils, Variants, Classes, Graphics, Menus,
|
|
Controls, Forms, Dialogs, StdCtrls, ExtCtrls, Types, ComCtrls, ClipBrd, base64,
|
|
uCEFChromium, uCEFWindowParent, uCEFInterfaces, uCEFApplication, uCEFTypes, uCEFConstants,
|
|
uCEFWinControl, uCEFSentinel;
|
|
|
|
const
|
|
MINIBROWSER_SHOWTEXTVIEWER = WM_APP + $101;
|
|
MINIBROWSER_EVALJSCODE = WM_APP + $102;
|
|
MINIBROWSER_JSBINPARAM = WM_APP + $103;
|
|
MINIBROWSER_GETSCROLLPOS = WM_APP + $104;
|
|
|
|
MINIBROWSER_CONTEXTMENU_EVALJSCODE = MENU_ID_USER_FIRST + 1;
|
|
MINIBROWSER_CONTEXTMENU_JSBINPARAM = MENU_ID_USER_FIRST + 2;
|
|
MINIBROWSER_CONTEXTMENU_GETSCROLLPOS = MENU_ID_USER_FIRST + 3;
|
|
|
|
EVAL_JS = 'JSContextEvalDemo';
|
|
BINARY_PARAM_JS = 'JSBinaryParameter';
|
|
|
|
type
|
|
|
|
{ TJSEvalFrm }
|
|
|
|
TJSEvalFrm = class(TForm)
|
|
CEFWindowParent1: TCEFWindowParent;
|
|
Chromium1: TChromium;
|
|
AddressBarPnl: TPanel;
|
|
GoBtn: TButton;
|
|
AddressEdt: TEdit;
|
|
Timer1: TTimer;
|
|
procedure CEFSentinel1Close(Sender: TObject);
|
|
procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
|
|
procedure GoBtnClick(Sender: TObject);
|
|
procedure FormShow(Sender: TObject);
|
|
|
|
procedure Chromium1ProcessMessageReceived(Sender: TObject;
|
|
const browser: ICefBrowser; const frame: ICefFrame; sourceProcess: TCefProcessId;
|
|
const message: ICefProcessMessage; out Result: Boolean);
|
|
procedure Chromium1BeforeContextMenu(Sender: TObject;
|
|
const browser: ICefBrowser; const frame: ICefFrame;
|
|
const params: ICefContextMenuParams; const model: ICefMenuModel);
|
|
procedure Chromium1ContextMenuCommand(Sender: TObject;
|
|
const browser: ICefBrowser; const frame: ICefFrame;
|
|
const params: ICefContextMenuParams; commandId: Integer;
|
|
eventFlags: Cardinal; out Result: Boolean);
|
|
procedure Timer1Timer(Sender: TObject);
|
|
procedure Chromium1BeforePopup(Sender: TObject;
|
|
const browser: ICefBrowser; const frame: ICefFrame; const targetUrl,
|
|
targetFrameName: ustring;
|
|
targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean;
|
|
const popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo;
|
|
var client: ICefClient; var settings: TCefBrowserSettings;
|
|
var extra_info: ICefDictionaryValue;
|
|
var noJavascriptAccess: Boolean; var Result: Boolean);
|
|
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
procedure Chromium1Close(Sender: TObject; const browser: ICefBrowser;
|
|
var aAction : TCefCloseBrowserAction);
|
|
procedure Chromium1BeforeClose(Sender: TObject;
|
|
const browser: ICefBrowser);
|
|
|
|
private
|
|
{ Private declarations }
|
|
|
|
protected
|
|
FText : string;
|
|
// Variables to control when can we destroy the form safely
|
|
FCanClose : boolean; // Set to True in TChromium.OnBeforeClose
|
|
FClosing : boolean; // Set to True in the CloseQuery event.
|
|
|
|
procedure BrowserCreatedMsg(var aMessage : TMessage); message CEF_AFTERCREATED;
|
|
procedure BrowserDestroyMsg(var aMessage : TMessage); message CEF_DESTROY;
|
|
procedure ShowTextViewerMsg(var aMessage : TMessage); message MINIBROWSER_SHOWTEXTVIEWER;
|
|
procedure EvalJSCodeMsg(var aMessage : TMessage); message MINIBROWSER_EVALJSCODE;
|
|
procedure GetScrollPosMsg(var aMessage : TMessage); message MINIBROWSER_GETSCROLLPOS;
|
|
procedure EvalJSBinParamMsg(var aMessage : TMessage); message MINIBROWSER_JSBINPARAM;
|
|
procedure WMMove(var aMessage : TWMMove); message WM_MOVE;
|
|
procedure WMMoving(var aMessage : TMessage); message WM_MOVING;
|
|
procedure WMEnterMenuLoop(var aMessage: TMessage); message WM_ENTERMENULOOP;
|
|
procedure WMExitMenuLoop(var aMessage: TMessage); message WM_EXITMENULOOP;
|
|
end;
|
|
|
|
var
|
|
JSEvalFrm: TJSEvalFrm;
|
|
|
|
procedure CreateGlobalCEFApp;
|
|
|
|
implementation
|
|
|
|
{$R *.lfm}
|
|
|
|
uses
|
|
uSimpleTextViewer, uCEFProcessMessage, uCEFBinaryValue, uCEFMiscFunctions;
|
|
|
|
// 99.9% of the code in this demo was created by xpert13 and shared in the CEF4Delphi forum.
|
|
|
|
// Steps to evaluate some JavaScript code using the V8Context
|
|
// ----------------------------------------------------------
|
|
// 1. Set GlobalCEFApp.OnProcessMessageReceived to RenderProcessHandler_OnProcessMessageReceivedEvent.
|
|
// 2. To get the Javascript code in this demo we use a context menu that sends a MINIBROWSER_EVALJSCODE to the form.
|
|
// 3. The EvalJSCodeMsg asks for the Javascript code and sends it to the renderer using a process message.
|
|
// 4. RenderProcessHandler_OnProcessMessageReceivedEvent receives the process message and calls ParseEvalJsAnswer
|
|
// to evaluate the code.
|
|
// 5. ParseEvalJsAnswer evaluates the code and sends a message with the results to the browser process using a
|
|
// process message.
|
|
// 6. Chromium1ProcessMessageReceived receives the message, stores the results and sends a
|
|
// MINIBROWSER_SHOWTEXTVIEWER message to the form.
|
|
// 7. ShowTextViewerMsg shows the results safely using a SimpleTextViewer.
|
|
|
|
|
|
// This demo also has an example of binary parameters in process messages
|
|
// ----------------------------------------------------------------------
|
|
// 1. Set GlobalCEFApp.OnProcessMessageReceived to RenderProcessHandler_OnProcessMessageReceivedEvent.
|
|
// 2. The context menu has a 'Send JPEG image' option that sends a MINIBROWSER_JSBINPARAM message to the form.
|
|
// 3. EvalJSBinParamMsg asks for a JPEG image and sends a process message with a ICefBinaryValue parameter to the
|
|
// renderer process.
|
|
// 4. The renderer process parses the binary parameter in the ParseBinaryValue function and sends back the image
|
|
// size and encoded image data to the browser process.
|
|
// 5. Chromium1ProcessMessageReceived receives the message, stores the results and sends a
|
|
// MINIBROWSER_SHOWTEXTVIEWER message to the form.
|
|
// 6. ShowTextViewerMsg shows the results safely using a SimpleTextViewer.
|
|
|
|
|
|
// About binary parameters
|
|
// -----------------------
|
|
// There is a size limit in the binary parameters of only a few kilobytes.
|
|
// For more info and alternatives read this thread in the official CEF forum :
|
|
// http://www.magpcss.org/ceforum/viewtopic.php?f=6&t=10590
|
|
//
|
|
// Compress the binary data if necessary!
|
|
|
|
|
|
// Destruction steps
|
|
// =================
|
|
// 1. FormCloseQuery sets CanClose to FALSE calls TChromium.CloseBrowser which triggers the TChromium.OnClose event.
|
|
// 2. TChromium.OnClose sends a CEFBROWSER_DESTROY message to destroy CEFWindowParent1 in the main thread, which triggers the TChromium.OnBeforeClose event.
|
|
// 3. TChromium.OnBeforeClose sets FCanClose := True and sends WM_CLOSE to the form.
|
|
|
|
procedure TJSEvalFrm.Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
|
|
begin
|
|
PostMessage(Handle, CEF_AFTERCREATED, 0, 0);
|
|
end;
|
|
|
|
procedure TJSEvalFrm.CEFSentinel1Close(Sender: TObject);
|
|
begin
|
|
|
|
end;
|
|
|
|
procedure TJSEvalFrm.Chromium1BeforeClose(Sender: TObject;
|
|
const browser: ICefBrowser);
|
|
begin
|
|
FCanClose := True;
|
|
PostMessage(Handle, WM_CLOSE, 0, 0);
|
|
end;
|
|
|
|
procedure TJSEvalFrm.Chromium1BeforeContextMenu(Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
const frame : ICefFrame;
|
|
const params : ICefContextMenuParams;
|
|
const model : ICefMenuModel);
|
|
begin
|
|
model.AddItem(MINIBROWSER_CONTEXTMENU_EVALJSCODE, 'Evaluate JavaScript code...');
|
|
model.AddItem(MINIBROWSER_CONTEXTMENU_GETSCROLLPOS, 'Get vertical scroll position...');
|
|
// TODO: Fix bug in creating a TCefBinaryValueRef
|
|
model.AddItem(MINIBROWSER_CONTEXTMENU_JSBINPARAM, 'Send JPEG image...');
|
|
end;
|
|
|
|
procedure TJSEvalFrm.Chromium1BeforePopup(Sender: TObject;
|
|
const browser: ICefBrowser; const frame: ICefFrame; const targetUrl,
|
|
targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition;
|
|
userGesture: Boolean; const popupFeatures: TCefPopupFeatures;
|
|
var windowInfo: TCefWindowInfo; var client: ICefClient;
|
|
var settings: TCefBrowserSettings;
|
|
var extra_info: ICefDictionaryValue;
|
|
var noJavascriptAccess: Boolean;
|
|
var Result: Boolean);
|
|
begin
|
|
// For simplicity, this demo blocks all popup windows and new tabs
|
|
Result := (targetDisposition in [WOD_NEW_FOREGROUND_TAB, WOD_NEW_BACKGROUND_TAB, WOD_NEW_POPUP, WOD_NEW_WINDOW]);
|
|
end;
|
|
|
|
procedure TJSEvalFrm.Chromium1Close(Sender: TObject;
|
|
const browser: ICefBrowser; var aAction : TCefCloseBrowserAction);
|
|
begin
|
|
PostMessage(Handle, CEF_DESTROY, 0, 0);
|
|
aAction := cbaDelay;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.Chromium1ContextMenuCommand(Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
const frame : ICefFrame;
|
|
const params : ICefContextMenuParams;
|
|
commandId : Integer;
|
|
eventFlags : Cardinal;
|
|
out Result : Boolean);
|
|
begin
|
|
Result := False;
|
|
|
|
case commandId of
|
|
MINIBROWSER_CONTEXTMENU_EVALJSCODE : PostMessage(Handle, MINIBROWSER_EVALJSCODE, 0, 0);
|
|
MINIBROWSER_CONTEXTMENU_JSBINPARAM : PostMessage(Handle, MINIBROWSER_JSBINPARAM, 0, 0);
|
|
MINIBROWSER_CONTEXTMENU_GETSCROLLPOS : PostMessage(Handle, MINIBROWSER_GETSCROLLPOS, 0, 0);
|
|
end;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
begin
|
|
CanClose := FCanClose;
|
|
|
|
if not(FClosing) then
|
|
begin
|
|
FClosing := True;
|
|
Visible := False;
|
|
Chromium1.CloseBrowser(True);
|
|
end;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.FormShow(Sender: TObject);
|
|
begin
|
|
// GlobalCEFApp.GlobalContextInitialized has to be TRUE before creating any browser
|
|
// If it's not initialized yet, we use a simple timer to create the browser later.
|
|
if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) then Timer1.Enabled := True;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.GoBtnClick(Sender: TObject);
|
|
begin
|
|
Chromium1.LoadURL(AddressEdt.Text);
|
|
end;
|
|
|
|
procedure TJSEvalFrm.BrowserCreatedMsg(var aMessage : TMessage);
|
|
begin
|
|
CEFWindowParent1.UpdateSize;
|
|
AddressBarPnl.Enabled := True;
|
|
GoBtn.Click;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.BrowserDestroyMsg(var aMessage : TMessage);
|
|
begin
|
|
CEFWindowParent1.Free;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.ShowTextViewerMsg(var aMessage : TMessage);
|
|
begin
|
|
SimpleTextViewerFrm.Memo1.Lines.Text := FText;
|
|
SimpleTextViewerFrm.ShowModal;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.Timer1Timer(Sender: TObject);
|
|
begin
|
|
Timer1.Enabled := False;
|
|
if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) and not(Chromium1.Initialized) then
|
|
Timer1.Enabled := True;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.WMMove(var aMessage : TWMMove);
|
|
begin
|
|
inherited;
|
|
|
|
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.WMMoving(var aMessage : TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.WMEnterMenuLoop(var aMessage: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := True;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.WMExitMenuLoop(var aMessage: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := False;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.EvalJSCodeMsg(var aMessage : TMessage);
|
|
var
|
|
TempMsg : ICefProcessMessage;
|
|
TempScript : string;
|
|
begin
|
|
TempScript := InputBox('JSEval demo', 'Please type some JavaScript code', 'document.title;');
|
|
|
|
if (length(TempScript) > 0) then
|
|
begin
|
|
TempMsg := TCefProcessMessageRef.New(EVAL_JS);
|
|
|
|
if TempMsg.ArgumentList.SetString(0, TempScript) then
|
|
Chromium1.SendProcessMessage(PID_RENDERER, TempMsg);
|
|
end;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.GetScrollPosMsg(var aMessage : TMessage);
|
|
var
|
|
TempMsg : ICefProcessMessage;
|
|
begin
|
|
TempMsg := TCefProcessMessageRef.New(EVAL_JS);
|
|
|
|
if TempMsg.ArgumentList.SetString(0, 'window.pageYOffset') then
|
|
Chromium1.SendProcessMessage(PID_RENDERER, TempMsg);
|
|
end;
|
|
|
|
procedure TJSEvalFrm.EvalJSBinParamMsg(var aMessage : TMessage);
|
|
var
|
|
TempMsg : ICefProcessMessage;
|
|
TempOpenDialog : TOpenDialog;
|
|
TempStream : TFileStream;
|
|
TempBinValue : ICefBinaryValue;
|
|
TempBuffer : TBytes;
|
|
TempSize : NativeUInt;
|
|
TempPointer : pointer;
|
|
begin
|
|
TempOpenDialog := nil;
|
|
TempStream := nil;
|
|
|
|
try
|
|
try
|
|
TempOpenDialog := TOpenDialog.Create(nil);
|
|
TempOpenDialog.Options := TempOpenDialog.Options + [ofFileMustExist];
|
|
TempOpenDialog.Filter := 'JPEG files (*.jpg)|*.JPG';
|
|
|
|
if TempOpenDialog.Execute then
|
|
begin
|
|
TempStream := TFileStream.Create(TempOpenDialog.FileName, fmOpenRead);
|
|
TempSize := TempStream.Size;
|
|
|
|
if (TempSize > 0) then
|
|
begin
|
|
SetLength(TempBuffer, TempSize);
|
|
TempSize := TempStream.Read(TempBuffer[0], TempSize);
|
|
|
|
if (TempSize > 0) then
|
|
begin
|
|
TempPointer := @TempBuffer[0];
|
|
TempBinValue := TCefBinaryValueRef.New(TempPointer, TempSize);
|
|
TempMsg := TCefProcessMessageRef.New(BINARY_PARAM_JS);
|
|
|
|
if TempMsg.ArgumentList.SetBinary(0, TempBinValue) then
|
|
Chromium1.SendProcessMessage(PID_RENDERER, TempMsg);
|
|
end;
|
|
end;
|
|
end;
|
|
except
|
|
on e : exception do
|
|
if CustomExceptionHandler('TJSEvalFrm.EvalJSBinParamMsg', e) then raise;
|
|
end;
|
|
finally
|
|
if (TempOpenDialog <> nil) then FreeAndNil(TempOpenDialog);
|
|
if (TempStream <> nil) then FreeAndNil(TempStream);
|
|
SetLength(TempBuffer, 0);
|
|
end;
|
|
end;
|
|
|
|
procedure ParseEvalJsAnswer(const pMessage : ICefProcessMessage;
|
|
const pBrowser : ICefBrowser;
|
|
const pFrame : ICefFrame;
|
|
const pReturnValue : ICefv8Value;
|
|
const pException : ICefV8Exception);
|
|
var
|
|
pAnswer : ICefProcessMessage;
|
|
strResult : String;
|
|
bGoodDataType : Boolean;
|
|
begin
|
|
pAnswer := TCefProcessMessageRef.New(EVAL_JS);
|
|
|
|
if (pReturnValue = nil) or not(pReturnValue.IsValid) then
|
|
begin
|
|
pAnswer.ArgumentList.SetBool(0, false);
|
|
pAnswer.ArgumentList.SetString(1, pException.Message);
|
|
end
|
|
else
|
|
begin
|
|
bGoodDataType := True;
|
|
|
|
if pReturnValue.IsString then strResult := pReturnValue.GetStringValue
|
|
else if pReturnValue.IsBool then strResult := BoolToStr(pReturnValue.GetBoolValue)
|
|
else if pReturnValue.IsInt then strResult := IntToStr(pReturnValue.GetIntValue)
|
|
else if pReturnValue.IsUInt then strResult := IntToStr(pReturnValue.GetUIntValue)
|
|
else if pReturnValue.IsDouble then strResult := FloatToStr(pReturnValue.GetDoubleValue)
|
|
else bGoodDataType := False;
|
|
|
|
if bGoodDataType then
|
|
begin
|
|
pAnswer.ArgumentList.SetBool(0, true);
|
|
pAnswer.ArgumentList.SetString(1, strResult);
|
|
end
|
|
else
|
|
begin
|
|
pAnswer.ArgumentList.SetBool(0, false);
|
|
pAnswer.ArgumentList.SetString(1, 'Result data type need to be string, int, uint or double!');
|
|
end;
|
|
end;
|
|
|
|
if (pFrame <> nil) and pFrame.IsValid then
|
|
pFrame.SendProcessMessage(PID_BROWSER, pAnswer);
|
|
end;
|
|
|
|
procedure ParseBinaryValue(const pBrowser : ICefBrowser; const pFrame: ICefFrame; const aBinaryValue : ICefBinaryValue);
|
|
var
|
|
pAnswer : ICefProcessMessage;
|
|
TempBuffer : TBytes;
|
|
TempPointer : pointer;
|
|
TempSize : NativeUInt;
|
|
TempString : string;
|
|
TempDecodedStream : TBytesStream;
|
|
TempEncodedStream : TStringStream;
|
|
TempEncoder : TBase64EncodingStream;
|
|
begin
|
|
TempDecodedStream := nil;
|
|
TempEncodedStream := nil;
|
|
TempEncoder := nil;
|
|
|
|
if (aBinaryValue = nil) then exit;
|
|
|
|
try
|
|
try
|
|
TempSize := aBinaryValue.GetSize;
|
|
|
|
if (TempSize > 0) then
|
|
begin
|
|
SetLength(TempBuffer, TempSize);
|
|
TempPointer := @TempBuffer[0];
|
|
TempSize := aBinaryValue.GetData(TempPointer, TempSize, 0);
|
|
|
|
if (TempSize > 0) then
|
|
begin
|
|
TempDecodedStream := TBytesStream.Create(TempBuffer);
|
|
|
|
TempEncodedStream := TStringStream.Create('');
|
|
TempEncoder := TBase64EncodingStream.Create(TempEncodedStream);
|
|
TempEncoder.CopyFrom(TempDecodedStream, TempDecodedStream.Size);
|
|
|
|
pAnswer := TCefProcessMessageRef.New(BINARY_PARAM_JS);
|
|
TempString := 'Image size : ' + inttostr(TempSize) + #13 + #10 +
|
|
'Encoded image : ' + TempEncodedStream.DataString;
|
|
|
|
if (pFrame <> nil) and pFrame.IsValid and pAnswer.ArgumentList.SetString(0, TempString) then
|
|
pFrame.SendProcessMessage(PID_BROWSER, pAnswer);
|
|
end;
|
|
end;
|
|
except
|
|
on e : exception do
|
|
if CustomExceptionHandler('ParseBinaryValue', e) then raise;
|
|
end;
|
|
finally
|
|
if (TempDecodedStream <> nil) then FreeAndnil(TempDecodedStream);
|
|
if (TempEncodedStream <> nil) then FreeAndnil(TempEncodedStream);
|
|
if (TempEncoder <> nil) then FreeAndnil(TempEncoder);
|
|
SetLength(TempBuffer, 0);
|
|
end;
|
|
end;
|
|
|
|
procedure RenderProcessHandler_OnProcessMessageReceivedEvent(const pBrowser : ICefBrowser;
|
|
const pFrame : ICefFrame;
|
|
uSourceProcess : TCefProcessId;
|
|
const pMessage : ICefProcessMessage;
|
|
var aHandled : boolean);
|
|
var
|
|
pV8Context : ICefv8Context;
|
|
pReturnValue : ICefv8Value;
|
|
pException : ICefV8Exception;
|
|
TempScript : string;
|
|
TempBinValue : ICefBinaryValue;
|
|
begin
|
|
aHandled := False;
|
|
|
|
if (pMessage = nil) or (pMessage.ArgumentList = nil) then exit;
|
|
|
|
if (pMessage.Name = EVAL_JS) then
|
|
begin
|
|
TempScript := pMessage.ArgumentList.GetString(0);
|
|
|
|
if (length(TempScript) > 0) and (pFrame <> nil) and pFrame.IsValid then
|
|
begin
|
|
pV8Context := pFrame.GetV8Context;
|
|
|
|
if pV8Context.Enter then
|
|
begin
|
|
pV8Context.Eval(TempScript, '', 1, pReturnValue, pException);
|
|
ParseEvalJsAnswer(pMessage, pBrowser, pFrame, pReturnValue, pException);
|
|
pV8Context.Exit;
|
|
end;
|
|
end;
|
|
|
|
aHandled := True;
|
|
end
|
|
else
|
|
if (pMessage.Name = BINARY_PARAM_JS) then
|
|
begin
|
|
TempBinValue := pMessage.ArgumentList.GetBinary(0);
|
|
ParseBinaryValue(pBrowser, pFrame, TempBinValue);
|
|
aHandled := True;
|
|
end;
|
|
end;
|
|
|
|
procedure CreateGlobalCEFApp;
|
|
begin
|
|
GlobalCEFApp := TCefApplication.Create;
|
|
GlobalCEFApp.OnProcessMessageReceived := RenderProcessHandler_OnProcessMessageReceivedEvent;
|
|
end;
|
|
|
|
procedure TJSEvalFrm.Chromium1ProcessMessageReceived(Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
const frame : ICefFrame;
|
|
sourceProcess : TCefProcessId;
|
|
const message : ICefProcessMessage;
|
|
out Result : Boolean);
|
|
begin
|
|
Result := False;
|
|
|
|
if (message = nil) or (message.ArgumentList = nil) then exit;
|
|
|
|
if (message.Name = EVAL_JS) then
|
|
begin
|
|
FText := message.ArgumentList.GetString(1);
|
|
PostMessage(Handle, MINIBROWSER_SHOWTEXTVIEWER, 0, 0);
|
|
Result := True;
|
|
end
|
|
else
|
|
if (message.Name = BINARY_PARAM_JS) then
|
|
begin
|
|
FText := message.ArgumentList.GetString(0);
|
|
PostMessage(Handle, MINIBROWSER_SHOWTEXTVIEWER, 0, 0);
|
|
Result := True;
|
|
end;
|
|
end;
|
|
|
|
end.
|