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CEF4Delphi/demos/Delphi_VCL/MiniBrowser/uMiniBrowser.pas

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// ************************************************************************
// ***************************** 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 © 2021 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 uMiniBrowser;
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants,
System.Classes, Vcl.Graphics, Vcl.Menus, Vcl.Controls, Vcl.Forms, Vcl.Dialogs,
Vcl.StdCtrls, Vcl.ExtCtrls, System.Types, Vcl.ComCtrls, Vcl.ClipBrd,
System.UITypes, Vcl.AppEvnts, Winapi.ActiveX, Winapi.ShlObj,
System.NetEncoding,
{$ELSE}
Windows, Messages, SysUtils, Variants, Classes, Graphics, Menus,
Controls, Forms, Dialogs, StdCtrls, ExtCtrls, Types, ComCtrls, ClipBrd,
AppEvnts, ActiveX, ShlObj, NetEncoding,
{$ENDIF}
uCEFChromium, uCEFWindowParent, uCEFInterfaces, uCEFApplication, uCEFTypes,
uCEFConstants, uCEFWinControl, uCEFSentinel, uCEFChromiumCore;
const
MINIBROWSER_SHOWDEVTOOLS = WM_APP + $101;
MINIBROWSER_HIDEDEVTOOLS = WM_APP + $102;
MINIBROWSER_COPYHTML = WM_APP + $103;
MINIBROWSER_SHOWRESPONSE = WM_APP + $104;
MINIBROWSER_COPYFRAMEIDS = WM_APP + $105;
MINIBROWSER_COPYFRAMENAMES = WM_APP + $106;
MINIBROWSER_SAVEPREFERENCES = WM_APP + $107;
MINIBROWSER_COPYALLTEXT = WM_APP + $108;
MINIBROWSER_TAKESNAPSHOT = WM_APP + $109;
MINIBROWSER_SHOWNAVIGATION = WM_APP + $10A;
MINIBROWSER_COOKIESFLUSHED = WM_APP + $10B;
MINIBROWSER_PDFPRINT_END = WM_APP + $10C;
MINIBROWSER_PREFS_AVLBL = WM_APP + $10D;
MINIBROWSER_DTDATA_AVLBL = WM_APP + $10E;
MINIBROWSER_HOMEPAGE = 'https://www.google.com';
MINIBROWSER_CONTEXTMENU_SHOWDEVTOOLS = MENU_ID_USER_FIRST + 1;
MINIBROWSER_CONTEXTMENU_HIDEDEVTOOLS = MENU_ID_USER_FIRST + 2;
MINIBROWSER_CONTEXTMENU_COPYHTML = MENU_ID_USER_FIRST + 3;
MINIBROWSER_CONTEXTMENU_JSWRITEDOC = MENU_ID_USER_FIRST + 4;
MINIBROWSER_CONTEXTMENU_JSPRINTDOC = MENU_ID_USER_FIRST + 5;
MINIBROWSER_CONTEXTMENU_SHOWRESPONSE = MENU_ID_USER_FIRST + 6;
MINIBROWSER_CONTEXTMENU_COPYFRAMEIDS = MENU_ID_USER_FIRST + 7;
MINIBROWSER_CONTEXTMENU_COPYFRAMENAMES = MENU_ID_USER_FIRST + 8;
MINIBROWSER_CONTEXTMENU_SAVEPREFERENCES = MENU_ID_USER_FIRST + 9;
MINIBROWSER_CONTEXTMENU_COPYALLTEXT = MENU_ID_USER_FIRST + 10;
MINIBROWSER_CONTEXTMENU_TAKESNAPSHOT = MENU_ID_USER_FIRST + 11;
MINIBROWSER_CONTEXTMENU_GETNAVIGATION = MENU_ID_USER_FIRST + 12;
MINIBROWSER_CONTEXTMENU_MUTEAUDIO = MENU_ID_USER_FIRST + 13;
MINIBROWSER_CONTEXTMENU_UNMUTEAUDIO = MENU_ID_USER_FIRST + 14;
type
TMiniBrowserFrm = class(TForm)
NavControlPnl: TPanel;
NavButtonPnl: TPanel;
URLEditPnl: TPanel;
BackBtn: TButton;
ForwardBtn: TButton;
ReloadBtn: TButton;
CEFWindowParent1: TCEFWindowParent;
Chromium1: TChromium;
StopBtn: TButton;
DevTools: TCEFWindowParent;
Splitter1: TSplitter;
StatusBar1: TStatusBar;
URLCbx: TComboBox;
ConfigPnl: TPanel;
ConfigBtn: TButton;
PopupMenu1: TPopupMenu;
DevTools1: TMenuItem;
N1: TMenuItem;
Preferences1: TMenuItem;
GoBtn: TButton;
N2: TMenuItem;
PrintinPDF1: TMenuItem;
Print1: TMenuItem;
N3: TMenuItem;
Zoom1: TMenuItem;
Inczoom1: TMenuItem;
Deczoom1: TMenuItem;
Resetzoom1: TMenuItem;
SaveDialog1: TSaveDialog;
ApplicationEvents1: TApplicationEvents;
OpenDialog1: TOpenDialog;
N4: TMenuItem;
Openfile1: TMenuItem;
Resolvehost1: TMenuItem;
Timer1: TTimer;
OpenfilewithaDAT1: TMenuItem;
N5: TMenuItem;
Memoryinfo1: TMenuItem;
Downloadimage1: TMenuItem;
Simulatekeyboardpresses1: TMenuItem;
Flushcookies1: TMenuItem;
Acceptlanguage1: TMenuItem;
FindText1: TMenuItem;
Clearcache1: TMenuItem;
akescreenshot1: TMenuItem;
Useragent1: TMenuItem;
ClearallstorageforcurrentURL1: TMenuItem;
CEFinfo1: TMenuItem;
SaveasMHTML1: TMenuItem;
procedure FormShow(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
procedure ApplicationEvents1Message(var Msg: tagMSG; var Handled: Boolean);
procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
procedure Chromium1LoadingStateChange(Sender: TObject; const browser: ICefBrowser; isLoading, canGoBack, canGoForward: Boolean);
procedure Chromium1TitleChange(Sender: TObject; const browser: ICefBrowser; const title: ustring);
procedure Chromium1AddressChange(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const url: ustring);
procedure Chromium1BeforeContextMenu(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const params: ICefContextMenuParams; const model: ICefMenuModel);
procedure Chromium1StatusMessage(Sender: TObject; const browser: ICefBrowser; const value: ustring);
procedure Chromium1TextResultAvailable(Sender: TObject; const aText: ustring);
procedure Chromium1FullScreenModeChange(Sender: TObject; const browser: ICefBrowser; fullscreen: Boolean);
procedure Chromium1PreKeyEvent(Sender: TObject; const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle; out isKeyboardShortcut, Result: Boolean);
procedure Chromium1KeyEvent(Sender: TObject; const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle; out Result: Boolean);
procedure Chromium1ContextMenuCommand(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const params: ICefContextMenuParams; commandId: Integer; eventFlags: Cardinal; out Result: Boolean);
procedure Chromium1PdfPrintFinished(Sender: TObject; aResultOK: Boolean);
procedure Chromium1ResourceResponse(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const request: ICefRequest; const response: ICefResponse; out Result: Boolean);
procedure Chromium1ResolvedHostAvailable(Sender: TObject; result: Integer; const resolvedIps: TStrings);
procedure Chromium1PrefsAvailable(Sender: TObject; aResultOK: Boolean);
procedure Chromium1BeforeDownload(Sender: TObject; const browser: ICefBrowser; const downloadItem: ICefDownloadItem; const suggestedName: ustring; const callback: ICefBeforeDownloadCallback);
procedure Chromium1DownloadUpdated(Sender: TObject; const browser: ICefBrowser; const downloadItem: ICefDownloadItem; const callback: ICefDownloadItemCallback);
procedure Chromium1BeforeResourceLoad(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const request: ICefRequest; const callback: ICefRequestCallback; out Result: TCefReturnValue);
procedure Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction : TCefCloseBrowserAction);
procedure Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
procedure Chromium1RenderCompMsg(Sender: TObject; var aMessage : TMessage; var aHandled: Boolean);
procedure Chromium1LoadingProgressChange(Sender: TObject; const browser: ICefBrowser; const progress: Double);
procedure Chromium1LoadEnd(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; httpStatusCode: Integer);
procedure Chromium1LoadError(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; errorCode: Integer; const errorText, failedUrl: ustring);
procedure Chromium1CertificateError(Sender: TObject; const browser: ICefBrowser; certError: Integer; const requestUrl: ustring; const sslInfo: ICefSslInfo; const callback: ICefRequestCallback; out Result: Boolean);
procedure Chromium1NavigationVisitorResultAvailable(Sender: TObject; const entry: ICefNavigationEntry; current: Boolean; index, total: Integer; var aResult: Boolean);
procedure Chromium1DownloadImageFinished(Sender: TObject; const imageUrl: ustring; httpStatusCode: Integer; const image: ICefImage);
procedure Chromium1CookiesFlushed(Sender: TObject);
procedure Chromium1BeforePluginLoad(Sender: TObject; const mimeType, pluginUrl: ustring; isMainFrame: Boolean; const topOriginUrl: ustring; const pluginInfo: ICefWebPluginInfo; var pluginPolicy: TCefPluginPolicy; var aResult: Boolean);
procedure Chromium1ZoomPctAvailable(Sender: TObject; const aZoomPct: Double);
procedure Chromium1DevToolsMethodResult(Sender: TObject; const browser: ICefBrowser; message_id: Integer; success: Boolean; const result: ICefValue);
procedure BackBtnClick(Sender: TObject);
procedure ForwardBtnClick(Sender: TObject);
procedure ReloadBtnClick(Sender: TObject);
procedure DevTools1Click(Sender: TObject);
procedure Preferences1Click(Sender: TObject);
procedure ConfigBtnClick(Sender: TObject);
procedure GoBtnClick(Sender: TObject);
procedure PrintinPDF1Click(Sender: TObject);
procedure Print1Click(Sender: TObject);
procedure Inczoom1Click(Sender: TObject);
procedure Deczoom1Click(Sender: TObject);
procedure Resetzoom1Click(Sender: TObject);
procedure Openfile1Click(Sender: TObject);
procedure StopBtnClick(Sender: TObject);
procedure Resolvehost1Click(Sender: TObject);
procedure OpenfilewithaDAT1Click(Sender: TObject);
procedure Memoryinfo1Click(Sender: TObject);
procedure Downloadimage1Click(Sender: TObject);
procedure Simulatekeyboardpresses1Click(Sender: TObject);
procedure Flushcookies1Click(Sender: TObject);
procedure Acceptlanguage1Click(Sender: TObject);
procedure PopupMenu1Popup(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
procedure FindText1Click(Sender: TObject);
procedure Clearcache1Click(Sender: TObject);
procedure akescreenshot1Click(Sender: TObject);
procedure Useragent1Click(Sender: TObject);
procedure ClearallstorageforcurrentURL1Click(Sender: TObject);
procedure CEFinfo1Click(Sender: TObject);
procedure SaveasMHTML1Click(Sender: TObject);
protected
FDevToolsMsgID : integer;
FScreenshotMsgID : integer;
FMHTMLMsgID : integer;
FDevToolsMsgValue : ustring;
FResponse : TStringList;
FRequest : TStringList;
FNavigation : TStringList;
// 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 AddURL(const aURL : string);
procedure ShowDevTools(aPoint : TPoint); overload;
procedure ShowDevTools; overload;
procedure HideDevTools;
procedure HandleKeyUp(const aMsg : TMsg; var aHandled : boolean);
procedure HandleKeyDown(const aMsg : TMsg; var aHandled : boolean);
procedure InspectRequest(const aRequest : ICefRequest);
procedure InspectResponse(const aResponse : ICefResponse);
procedure BrowserCreatedMsg(var aMessage : TMessage); message CEF_AFTERCREATED;
procedure BrowserDestroyMsg(var aMessage : TMessage); message CEF_DESTROY;
procedure ShowDevToolsMsg(var aMessage : TMessage); message MINIBROWSER_SHOWDEVTOOLS;
procedure HideDevToolsMsg(var aMessage : TMessage); message MINIBROWSER_HIDEDEVTOOLS;
procedure CopyAllTextMsg(var aMessage : TMessage); message MINIBROWSER_COPYALLTEXT;
procedure CopyHTMLMsg(var aMessage : TMessage); message MINIBROWSER_COPYHTML;
procedure CopyFramesIDsMsg(var aMessage : TMessage); message MINIBROWSER_COPYFRAMEIDS;
procedure CopyFramesNamesMsg(var aMessage : TMessage); message MINIBROWSER_COPYFRAMENAMES;
procedure ShowResponseMsg(var aMessage : TMessage); message MINIBROWSER_SHOWRESPONSE;
procedure ShowNavigationMsg(var aMessage : TMessage); message MINIBROWSER_SHOWNAVIGATION;
procedure SavePreferencesMsg(var aMessage : TMessage); message MINIBROWSER_SAVEPREFERENCES;
procedure TakeSnapshotMsg(var aMessage : TMessage); message MINIBROWSER_TAKESNAPSHOT;
procedure CookiesFlushedMsg(var aMessage : TMessage); message MINIBROWSER_COOKIESFLUSHED;
procedure PrintPDFEndMsg(var aMessage : TMessage); message MINIBROWSER_PDFPRINT_END;
procedure PreferencesAvailableMsg(var aMessage : TMessage); message MINIBROWSER_PREFS_AVLBL;
procedure DevToolsDataAvailableMsg(var aMessage : TMessage); message MINIBROWSER_DTDATA_AVLBL;
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;
public
procedure ShowStatusText(const aText : string);
end;
var
MiniBrowserFrm : TMiniBrowserFrm;
procedure CreateGlobalCEFApp;
implementation
{$R *.dfm}
uses
uPreferences, uCefStringMultimap, uCEFMiscFunctions, uSimpleTextViewer,
uCEFClient, uFindFrm, uCEFDictionaryValue;
// 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 CreateGlobalCEFApp;
begin
GlobalCEFApp := TCefApplication.Create;
GlobalCEFApp.LogFile := 'debug.log';
GlobalCEFApp.LogSeverity := LOGSEVERITY_INFO;
GlobalCEFApp.cache := 'cache';
GlobalCEFApp.EnablePrintPreview := True;
// This is a workaround for the CEF4Delphi issue #324 :
// https://github.com/salvadordf/CEF4Delphi/issues/324
GlobalCEFApp.DisableFeatures := 'WinUseBrowserSpellChecker';
end;
procedure TMiniBrowserFrm.BackBtnClick(Sender: TObject);
begin
Chromium1.GoBack;
end;
procedure TMiniBrowserFrm.ForwardBtnClick(Sender: TObject);
begin
Chromium1.GoForward;
end;
procedure TMiniBrowserFrm.GoBtnClick(Sender: TObject);
begin
Chromium1.LoadURL(URLCbx.Text);
end;
procedure TMiniBrowserFrm.ReloadBtnClick(Sender: TObject);
begin
Chromium1.Reload;
end;
procedure TMiniBrowserFrm.Resetzoom1Click(Sender: TObject);
begin
Chromium1.ResetZoomStep;
end;
procedure TMiniBrowserFrm.Resolvehost1Click(Sender: TObject);
var
TempURL : string;
begin
TempURL := inputbox('Resolve host', 'URL :', 'http://google.com');
if (length(TempURL) > 0) then Chromium1.ResolveHost(TempURL);
end;
procedure TMiniBrowserFrm.CEFinfo1Click(Sender: TObject);
var
TempInfo : string;
begin
TempInfo := 'libcef.dll : ' + CRLF + GlobalCEFApp.LibCefVersion + CRLF + CRLF +
'chrome_elf.dll : ' + CRLF + GlobalCEFApp.ChromeVersion + CRLF + CRLF +
'Universal API hash : ' + CRLF + GlobalCEFApp.ApiHashUniversal + CRLF + CRLF +
'Platform API hash : ' + CRLF + GlobalCEFApp.ApiHashPlatform + CRLF + CRLF +
'Commit API hash : ' + CRLF + GlobalCEFApp.ApiHashCommit;
showmessage(TempInfo);
end;
procedure TMiniBrowserFrm.Chromium1AddressChange(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame; const url: ustring);
begin
if Chromium1.IsSameBrowser(browser) then AddURL(url);
end;
procedure TMiniBrowserFrm.Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
begin
if Chromium1.IsSameBrowser(browser) then
PostMessage(Handle, CEF_AFTERCREATED, 0, 0)
else
SendMessage(browser.Host.WindowHandle, WM_SETICON, 1, application.Icon.Handle); // Use the same icon in the popup window
end;
procedure TMiniBrowserFrm.Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
begin
// The main browser is being destroyed
if (Chromium1.BrowserId = 0) then
begin
FCanClose := True;
PostMessage(Handle, WM_CLOSE, 0, 0);
end;
end;
procedure TMiniBrowserFrm.Chromium1BeforeContextMenu(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
const params: ICefContextMenuParams; const model: ICefMenuModel);
begin
if Chromium1.IsSameBrowser(browser) then
begin
model.AddSeparator;
model.AddItem(MINIBROWSER_CONTEXTMENU_TAKESNAPSHOT, 'Take snapshot...');
model.AddItem(MINIBROWSER_CONTEXTMENU_GETNAVIGATION, 'Get navigation entries');
model.AddSeparator;
model.AddItem(MINIBROWSER_CONTEXTMENU_COPYALLTEXT, 'Copy displayed text to clipboard');
model.AddItem(MINIBROWSER_CONTEXTMENU_COPYHTML, 'Copy HTML to clipboard');
model.AddItem(MINIBROWSER_CONTEXTMENU_COPYFRAMEIDS, 'Copy HTML frame identifiers to clipboard');
model.AddItem(MINIBROWSER_CONTEXTMENU_COPYFRAMENAMES, 'Copy HTML frame names to clipboard');
model.AddSeparator;
model.AddItem(MINIBROWSER_CONTEXTMENU_SAVEPREFERENCES, 'Save preferences as...');
model.AddSeparator;
model.AddItem(MINIBROWSER_CONTEXTMENU_JSWRITEDOC, 'Modify HTML document');
model.AddItem(MINIBROWSER_CONTEXTMENU_JSPRINTDOC, 'Print using Javascript');
model.AddItem(MINIBROWSER_CONTEXTMENU_SHOWRESPONSE, 'Show server headers');
if DevTools.Visible then
model.AddItem(MINIBROWSER_CONTEXTMENU_HIDEDEVTOOLS, 'Hide DevTools')
else
model.AddItem(MINIBROWSER_CONTEXTMENU_SHOWDEVTOOLS, 'Show DevTools');
if Chromium1.AudioMuted then
model.AddItem(MINIBROWSER_CONTEXTMENU_UNMUTEAUDIO, 'Unmute audio')
else
model.AddItem(MINIBROWSER_CONTEXTMENU_MUTEAUDIO, 'Mute audio');
end
else
model.AddItem(MINIBROWSER_CONTEXTMENU_SHOWDEVTOOLS, 'Show DevTools');
end;
function PathToMyDocuments : string;
var
Allocator : IMalloc;
Path : pchar;
idList : PItemIDList;
begin
Result := '';
Path := nil;
idList := nil;
try
if (SHGetMalloc(Allocator) = S_OK) then
begin
GetMem(Path, MAX_PATH);
if (SHGetSpecialFolderLocation(0, CSIDL_PERSONAL, idList) = S_OK) and
SHGetPathFromIDList(idList, Path) then
Result := string(Path);
end;
finally
if (Path <> nil) then FreeMem(Path);
if (idList <> nil) then Allocator.Free(idList);
end;
end;
procedure TMiniBrowserFrm.Chromium1BeforeDownload(Sender: TObject;
const browser: ICefBrowser; const downloadItem: ICefDownloadItem;
const suggestedName: ustring;
const callback: ICefBeforeDownloadCallback);
var
TempMyDocuments, TempFullPath, TempName : string;
begin
if not(Chromium1.IsSameBrowser(browser)) or
(downloadItem = nil) or
not(downloadItem.IsValid) then
exit;
TempMyDocuments := PathToMyDocuments;
if (length(suggestedName) > 0) then
TempName := suggestedName
else
TempName := 'DownloadedFile';
if (length(TempMyDocuments) > 0) then
TempFullPath := IncludeTrailingPathDelimiter(TempMyDocuments) + TempName
else
TempFullPath := TempName;
callback.cont(TempFullPath, True);
end;
procedure TMiniBrowserFrm.Chromium1BeforePluginLoad(Sender: TObject;
const mimeType, pluginUrl: ustring; isMainFrame: Boolean;
const topOriginUrl: ustring; const pluginInfo: ICefWebPluginInfo;
var pluginPolicy: TCefPluginPolicy; var aResult: Boolean);
begin
// Always allow the PDF plugin to load.
if (pluginPolicy <> PLUGIN_POLICY_ALLOW) and
(CompareText(mimeType, 'application/pdf') = 0) then
begin
pluginPolicy := PLUGIN_POLICY_ALLOW;
aResult := True;
end
else
aResult := False;
end;
procedure TMiniBrowserFrm.Chromium1BeforeResourceLoad(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
const request: ICefRequest; const callback: ICefRequestCallback;
out Result: TCefReturnValue);
begin
Result := RV_CONTINUE;
if Chromium1.IsSameBrowser(browser) and
(frame <> nil) and
frame.IsMain and
frame.IsValid then
InspectRequest(request);
end;
procedure TMiniBrowserFrm.Chromium1CertificateError(Sender: TObject;
const browser: ICefBrowser; certError: Integer;
const requestUrl: ustring; const sslInfo: ICefSslInfo;
const callback: ICefRequestCallback; out Result: Boolean);
begin
CefDebugLog('Certificate error code:' + inttostr(certError) +
' - URL:' + requestUrl, CEF_LOG_SEVERITY_ERROR);
Result := False;
end;
procedure TMiniBrowserFrm.Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction : TCefCloseBrowserAction);
begin
if (browser <> nil) and
(Chromium1.BrowserId = browser.Identifier) and
(CEFWindowParent1 <> nil) then
begin
PostMessage(Handle, CEF_DESTROY, 0, 0);
aAction := cbaDelay;
end;
end;
procedure TMiniBrowserFrm.Chromium1ContextMenuCommand(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
const params: ICefContextMenuParams; commandId: Integer;
eventFlags: Cardinal; out Result: Boolean);
var
TempParam : WParam;
TempInfo : TCefWindowInfo;
TempClient : ICefClient;
TempSettings : TCefBrowserSettings;
begin
Result := False;
if Chromium1.IsSameBrowser(browser) then
case commandId of
MINIBROWSER_CONTEXTMENU_HIDEDEVTOOLS :
PostMessage(Handle, MINIBROWSER_HIDEDEVTOOLS, 0, 0);
MINIBROWSER_CONTEXTMENU_SHOWDEVTOOLS :
begin
TempParam := ((params.XCoord and $FFFF) shl 16) or (params.YCoord and $FFFF);
PostMessage(Handle, MINIBROWSER_SHOWDEVTOOLS, TempParam, 0);
end;
MINIBROWSER_CONTEXTMENU_COPYALLTEXT :
PostMessage(Handle, MINIBROWSER_COPYALLTEXT, 0, 0);
MINIBROWSER_CONTEXTMENU_COPYHTML :
PostMessage(Handle, MINIBROWSER_COPYHTML, 0, 0);
MINIBROWSER_CONTEXTMENU_COPYFRAMEIDS :
PostMessage(Handle, MINIBROWSER_COPYFRAMEIDS, 0, 0);
MINIBROWSER_CONTEXTMENU_COPYFRAMENAMES :
PostMessage(Handle, MINIBROWSER_COPYFRAMENAMES, 0, 0);
MINIBROWSER_CONTEXTMENU_SHOWRESPONSE :
PostMessage(Handle, MINIBROWSER_SHOWRESPONSE, 0, 0);
MINIBROWSER_CONTEXTMENU_SAVEPREFERENCES :
PostMessage(Handle, MINIBROWSER_SAVEPREFERENCES, 0, 0);
MINIBROWSER_CONTEXTMENU_TAKESNAPSHOT :
PostMessage(Handle, MINIBROWSER_TAKESNAPSHOT, 0, 0);
MINIBROWSER_CONTEXTMENU_GETNAVIGATION :
begin
FNavigation.Clear;
Chromium1.GetNavigationEntries(False);
end;
MINIBROWSER_CONTEXTMENU_JSWRITEDOC :
if (frame <> nil) and frame.IsValid then
frame.ExecuteJavaScript(
'var css = ' + chr(39) + '@page {size: A4; margin: 0;} @media print {html, body {width: 210mm; height: 297mm;}}' + chr(39) + '; ' +
'var style = document.createElement(' + chr(39) + 'style' + chr(39) + '); ' +
'style.type = ' + chr(39) + 'text/css' + chr(39) + '; ' +
'style.appendChild(document.createTextNode(css)); ' +
'document.head.appendChild(style);',
'about:blank', 0);
MINIBROWSER_CONTEXTMENU_JSPRINTDOC :
if (frame <> nil) and frame.IsValid then
frame.ExecuteJavaScript('window.print();', 'about:blank', 0);
MINIBROWSER_CONTEXTMENU_UNMUTEAUDIO :
Chromium1.AudioMuted := False;
MINIBROWSER_CONTEXTMENU_MUTEAUDIO :
Chromium1.AudioMuted := True;
end
else
case commandId of
MINIBROWSER_CONTEXTMENU_SHOWDEVTOOLS :
try
WindowInfoAsPopUp(TempInfo, browser.Host.WindowHandle, 'DevTools');
TempClient := TCustomClientHandler.Create(Chromium1, True);
FillChar(TempSettings, SizeOf(TCefBrowserSettings), 0);
browser.Host.ShowDevTools(@TempInfo, TempClient, @TempSettings, nil);
finally
TempClient := nil
end;
end;
end;
procedure TMiniBrowserFrm.Chromium1CookiesFlushed(Sender: TObject);
begin
PostMessage(Handle, MINIBROWSER_COOKIESFLUSHED, 0, 0);
end;
procedure TMiniBrowserFrm.CookiesFlushedMsg(var aMessage : TMessage);
begin
showmessage('The cookies were flushed successfully');
end;
procedure TMiniBrowserFrm.PrintPDFEndMsg(var aMessage : TMessage);
begin
if (aMessage.lParam <> 0) then
showmessage('The PDF file was generated successfully')
else
showmessage('There was a problem generating the PDF file.');
end;
procedure TMiniBrowserFrm.PreferencesAvailableMsg(var aMessage : TMessage);
begin
if (aMessage.lParam <> 0) then
showmessage('The preferences file was generated successfully')
else
showmessage('There was a problem generating the preferences file.');
end;
procedure TMiniBrowserFrm.Chromium1DownloadUpdated(Sender: TObject;
const browser: ICefBrowser; const downloadItem: ICefDownloadItem;
const callback: ICefDownloadItemCallback);
var
TempString : string;
begin
if not(Chromium1.IsSameBrowser(browser)) then exit;
if downloadItem.IsComplete then
ShowStatusText(downloadItem.FullPath + ' completed')
else
if downloadItem.IsCanceled then
ShowStatusText(downloadItem.FullPath + ' canceled')
else
if downloadItem.IsInProgress then
begin
if (downloadItem.PercentComplete >= 0) then
TempString := downloadItem.FullPath + ' : ' + inttostr(downloadItem.PercentComplete) + '%'
else
TempString := downloadItem.FullPath + ' : ' + inttostr(downloadItem.ReceivedBytes) + ' bytes received';
ShowStatusText(TempString);
end;
end;
procedure TMiniBrowserFrm.Chromium1FullScreenModeChange(Sender: TObject;
const browser: ICefBrowser; fullscreen: Boolean);
begin
if not(Chromium1.IsSameBrowser(browser)) then exit;
// This event is executed in a CEF thread and this can cause problems when
// you change the 'Enabled' and 'Visible' properties from VCL components.
// It's recommended to change the 'Enabled' and 'Visible' properties
// in the main application thread and not in a CEF thread.
// It's much safer to use PostMessage to send a message to the main form with
// all this information and update those properties in the procedure handling
// that message.
if fullscreen then
begin
NavControlPnl.Visible := False;
StatusBar1.Visible := False;
if (WindowState = wsMaximized) then WindowState := wsNormal;
BorderIcons := [];
BorderStyle := bsNone;
WindowState := wsMaximized;
end
else
begin
BorderIcons := [biSystemMenu, biMinimize, biMaximize];
BorderStyle := bsSizeable;
WindowState := wsNormal;
NavControlPnl.Visible := True;
StatusBar1.Visible := True;
end;
end;
procedure TMiniBrowserFrm.Chromium1KeyEvent(Sender: TObject;
const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle;
out Result: Boolean);
var
TempMsg : TMsg;
begin
Result := False;
if (event <> nil) and (osEvent <> nil) then
case osEvent.Message of
WM_KEYUP :
begin
TempMsg := osEvent^;
HandleKeyUp(TempMsg, Result);
end;
WM_KEYDOWN :
begin
TempMsg := osEvent^;
HandleKeyDown(TempMsg, Result);
end;
end;
end;
procedure TMiniBrowserFrm.ApplicationEvents1Message(var Msg: tagMSG;
var Handled: Boolean);
begin
case Msg.message of
WM_KEYUP : HandleKeyUp(Msg, Handled);
WM_KEYDOWN : HandleKeyDown(Msg, Handled);
end;
end;
procedure TMiniBrowserFrm.HandleKeyUp(const aMsg : TMsg; var aHandled : boolean);
var
TempMessage : TMessage;
TempKeyMsg : TWMKey;
begin
TempMessage.Msg := aMsg.message;
TempMessage.wParam := aMsg.wParam;
TempMessage.lParam := aMsg.lParam;
TempKeyMsg := TWMKey(TempMessage);
if (TempKeyMsg.CharCode = VK_F12) then
begin
aHandled := True;
if DevTools.Visible then
PostMessage(Handle, MINIBROWSER_HIDEDEVTOOLS, 0, 0)
else
PostMessage(Handle, MINIBROWSER_SHOWDEVTOOLS, 0, 0);
end;
end;
procedure TMiniBrowserFrm.HandleKeyDown(const aMsg : TMsg; var aHandled : boolean);
var
TempMessage : TMessage;
TempKeyMsg : TWMKey;
begin
TempMessage.Msg := aMsg.message;
TempMessage.wParam := aMsg.wParam;
TempMessage.lParam := aMsg.lParam;
TempKeyMsg := TWMKey(TempMessage);
if (TempKeyMsg.CharCode = VK_F12) then aHandled := True;
end;
procedure TMiniBrowserFrm.Chromium1LoadEnd(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
httpStatusCode: Integer);
var
TempHandle : THandle;
begin
if FClosing or (frame = nil) or not(frame.IsValid) or (browser = nil) then exit;
if Chromium1.IsSameBrowser(browser) then
begin
if frame.IsMain then
StatusBar1.Panels[1].Text := 'main frame loaded : ' + quotedstr(frame.name)
else
StatusBar1.Panels[1].Text := 'frame loaded : ' + quotedstr(frame.name);
end
else
begin
// This is a workaround for a focus issue in popup windows handled by CEF
TempHandle := WinApi.Windows.GetWindow(Browser.Host.WindowHandle, GW_OWNER);
if (TempHandle <> Handle) then
WinApi.Windows.SetFocus(TempHandle);
end;
end;
procedure TMiniBrowserFrm.Chromium1LoadError(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame; errorCode: Integer;
const errorText, failedUrl: ustring);
var
TempString : string;
begin
if (errorCode = ERR_ABORTED) then exit;
TempString := '<html><body bgcolor="white">' +
'<h2>Failed to load URL ' + failedUrl +
' with error ' + errorText +
' (' + inttostr(errorCode) + ').</h2></body></html>';
Chromium1.LoadString(TempString, frame);
end;
procedure TMiniBrowserFrm.Chromium1LoadingProgressChange(Sender: TObject;
const browser: ICefBrowser; const progress: Double);
begin
StatusBar1.Panels[0].Text := 'Loading... ' + FloatToStrF(progress * 100, ffFixed, 3, 0) + '%';
end;
procedure TMiniBrowserFrm.Chromium1LoadingStateChange(Sender: TObject;
const browser: ICefBrowser; isLoading, canGoBack, canGoForward: Boolean);
begin
if not(Chromium1.IsSameBrowser(browser)) or FClosing then exit;
// This event is executed in a CEF thread and this can cause problems when
// you change the 'Enabled' and 'Visible' properties from VCL components.
// It's recommended to change the 'Enabled' and 'Visible' properties
// in the main application thread and not in a CEF thread.
// It's much safer to use PostMessage to send a message to the main form with
// all this information and update those properties in the procedure handling
// that message.
BackBtn.Enabled := canGoBack;
ForwardBtn.Enabled := canGoForward;
if isLoading then
begin
StatusBar1.Panels[0].Text := 'Loading...';
ReloadBtn.Enabled := False;
StopBtn.Enabled := True;
end
else
begin
StatusBar1.Panels[0].Text := 'Finished';
ReloadBtn.Enabled := True;
StopBtn.Enabled := False;
end;
end;
procedure TMiniBrowserFrm.Chromium1NavigationVisitorResultAvailable(Sender: TObject;
const entry: ICefNavigationEntry; current: Boolean; index, total: Integer;
var aResult: Boolean);
begin
if (entry <> nil) and entry.IsValid then FNavigation.Add(entry.Url);
if (index < pred(total)) then
aResult := True
else
begin
aResult := False;
PostMessage(Handle, MINIBROWSER_SHOWNAVIGATION, 0, 0);
end;
end;
procedure TMiniBrowserFrm.Chromium1PdfPrintFinished(Sender: TObject; aResultOK: Boolean);
begin
PostMessage(Handle, MINIBROWSER_PDFPRINT_END, 0, LPARAM(aResultOK));
end;
procedure TMiniBrowserFrm.Chromium1PrefsAvailable(Sender: TObject; aResultOK: Boolean);
begin
PostMessage(Handle, MINIBROWSER_PREFS_AVLBL, 0, LPARAM(aResultOK));
end;
procedure TMiniBrowserFrm.Chromium1PreKeyEvent(Sender: TObject;
const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle;
out isKeyboardShortcut, Result: Boolean);
begin
Result := False;
if (event <> nil) and
(event.kind in [KEYEVENT_KEYDOWN, KEYEVENT_KEYUP]) and
(event.windows_key_code = VK_F12) then
isKeyboardShortcut := True;
end;
procedure TMiniBrowserFrm.Chromium1RenderCompMsg(Sender: TObject; var aMessage : TMessage; var aHandled: Boolean);
begin
if not(FClosing) and (aMessage.Msg = WM_MOUSEMOVE) then
begin
StatusBar1.Panels[2].Text := 'x : ' + inttostr(aMessage.lParam and $FFFF);
StatusBar1.Panels[3].Text := 'y : ' + inttostr((aMessage.lParam and $FFFF0000) shr 16);
end;
end;
procedure TMiniBrowserFrm.Chromium1ResolvedHostAvailable(Sender: TObject;
result: Integer; const resolvedIps: TStrings);
begin
if (result = ERR_NONE) then
showmessage('Resolved IPs : ' + resolvedIps.CommaText)
else
showmessage('There was a problem resolving the host.' + CRLF +
'Error code : ' + inttostr(result));
end;
procedure TMiniBrowserFrm.InspectRequest(const aRequest : ICefRequest);
var
TempHeaderMap : ICefStringMultimap;
i, j : integer;
begin
if (aRequest <> nil) then
begin
FRequest.Clear;
TempHeaderMap := TCefStringMultimapOwn.Create;
aRequest.GetHeaderMap(TempHeaderMap);
i := 0;
j := TempHeaderMap.Size;
while (i < j) do
begin
FRequest.Add(TempHeaderMap.Key[i] + '=' + TempHeaderMap.Value[i]);
inc(i);
end;
end;
end;
procedure TMiniBrowserFrm.InspectResponse(const aResponse : ICefResponse);
var
TempHeaderMap : ICefStringMultimap;
i, j : integer;
begin
if (aResponse <> nil) then
begin
FResponse.Clear;
TempHeaderMap := TCefStringMultimapOwn.Create;
aResponse.GetHeaderMap(TempHeaderMap);
i := 0;
j := TempHeaderMap.Size;
while (i < j) do
begin
FResponse.Add(TempHeaderMap.Key[i] + '=' + TempHeaderMap.Value[i]);
inc(i);
end;
end;
end;
procedure TMiniBrowserFrm.Memoryinfo1Click(Sender: TObject);
const
BYTES_PER_MEGABYTE = 1024 * 1024;
var
TempMessage : string;
begin
TempMessage := 'Total memory used by this application : ' + inttostr(GlobalCEFApp.UsedMemory div BYTES_PER_MEGABYTE) + ' Mb' + CRLF +
'Total system memory : ' + inttostr(GlobalCEFApp.TotalSystemMemory div BYTES_PER_MEGABYTE) + ' Mb' + CRLF +
'Available physical memory : ' + inttostr(GlobalCEFApp.AvailableSystemMemory div BYTES_PER_MEGABYTE) + ' Mb' + CRLF +
'Memory load : ' + inttostr(GlobalCEFApp.SystemMemoryLoad) + ' %';
MessageDlg(TempMessage, mtInformation, [mbOK], 0);
end;
procedure TMiniBrowserFrm.Chromium1ResourceResponse(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
const request: ICefRequest; const response: ICefResponse;
out Result: Boolean);
begin
Result := False;
if Chromium1.IsSameBrowser(browser) and
(frame <> nil) and
frame.IsMain and
frame.IsValid then
InspectResponse(response);
end;
procedure TMiniBrowserFrm.ShowStatusText(const aText : string);
begin
if not(FClosing) then StatusBar1.Panels[1].Text := aText;
end;
procedure TMiniBrowserFrm.Simulatekeyboardpresses1Click(Sender: TObject);
const
SIMULATED_KEY_PRESSES = 'QWERTY';
var
i : integer;
TempKeyEvent : TCefKeyEvent;
begin
// This procedure is extremely simplified.
// Use the SimpleOSRBrowser demo to log the real TCefKeyEvent values
// if you use anything different than uppercase letters.
for i := 1 to length(SIMULATED_KEY_PRESSES) do
begin
// WM_KEYDOWN
TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN;
TempKeyEvent.modifiers := 0;
TempKeyEvent.windows_key_code := ord(SIMULATED_KEY_PRESSES[i]);
TempKeyEvent.native_key_code := 0;
TempKeyEvent.is_system_key := ord(False);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium1.SendKeyEvent(@TempKeyEvent);
// WM_CHAR
TempKeyEvent.kind := KEYEVENT_CHAR;
Chromium1.SendKeyEvent(@TempKeyEvent);
// WM_KEYUP
TempKeyEvent.kind := KEYEVENT_KEYUP;
Chromium1.SendKeyEvent(@TempKeyEvent);
end;
end;
procedure TMiniBrowserFrm.StopBtnClick(Sender: TObject);
begin
Chromium1.StopLoad;
end;
procedure TMiniBrowserFrm.Chromium1StatusMessage(Sender: TObject;
const browser: ICefBrowser; const value: ustring);
begin
if Chromium1.IsSameBrowser(browser) then ShowStatusText(value);
end;
procedure TMiniBrowserFrm.Chromium1TextResultAvailable(Sender: TObject; const aText: ustring);
begin
clipboard.AsText := aText;
end;
procedure TMiniBrowserFrm.Chromium1TitleChange(Sender: TObject;
const browser: ICefBrowser; const title: ustring);
begin
if not(Chromium1.IsSameBrowser(browser)) then exit;
if (title <> '') then
caption := 'MiniBrowser - ' + title
else
caption := 'MiniBrowser';
end;
procedure TMiniBrowserFrm.Chromium1ZoomPctAvailable(Sender: TObject;
const aZoomPct: Double);
begin
ShowStatusText('Zoom : ' + floattostr(aZoomPct) + '%');
end;
procedure TMiniBrowserFrm.ClearallstorageforcurrentURL1Click(Sender: TObject);
begin
Chromium1.ClearDataForOrigin(URLCbx.Text);
end;
procedure TMiniBrowserFrm.Clearcache1Click(Sender: TObject);
begin
Chromium1.ClearCache;
end;
procedure TMiniBrowserFrm.FindText1Click(Sender: TObject);
begin
FindFrm.Show;
end;
procedure TMiniBrowserFrm.Flushcookies1Click(Sender: TObject);
begin
if not(Chromium1.FlushCookieStore(False)) then
showmessage('There was a problem flushing the cookies.');
end;
procedure TMiniBrowserFrm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
CanClose := FCanClose;
if not(FClosing) then
begin
FClosing := True;
Visible := False;
// if TChromium.MultiBrowserMode is enabled then we have to close all
// stored browsers and not only the main browser.
Chromium1.CloseAllBrowsers;
end;
end;
procedure TMiniBrowserFrm.FormCreate(Sender: TObject);
begin
FCanClose := False;
FClosing := False;
FResponse := TStringList.Create;
FRequest := TStringList.Create;
FNavigation := TStringList.Create;
FDevToolsMsgID := 0;
// The MultiBrowserMode store all the browser references in TChromium.
// The first browser reference is the browser in the main form.
// When MiniBrowser allows CEF to create child popup browsers it will also
// store their reference inside TChromium and you can use all the TChromium's
// methods and properties to manipulate those browsers.
// To do that call TChromium.SelectBrowser with the browser ID that will be
// used when you call any method or property in TChromium.
Chromium1.MultiBrowserMode := True;
Chromium1.DefaultURL := MINIBROWSER_HOMEPAGE;
end;
procedure TMiniBrowserFrm.FormDestroy(Sender: TObject);
begin
FResponse.Free;
FRequest.Free;
FNavigation.Free;
end;
procedure TMiniBrowserFrm.FormShow(Sender: TObject);
begin
ShowStatusText('Initializing browser. Please wait...');
// WebRTC's IP leaking can lowered/avoided by setting these preferences
// To test this go to https://www.browserleaks.com/webrtc
Chromium1.WebRTCIPHandlingPolicy := hpDisableNonProxiedUDP;
Chromium1.WebRTCMultipleRoutes := STATE_DISABLED;
Chromium1.WebRTCNonproxiedUDP := STATE_DISABLED;
// 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 TMiniBrowserFrm.Timer1Timer(Sender: TObject);
begin
Timer1.Enabled := False;
if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) and not(Chromium1.Initialized) then
Timer1.Enabled := True;
end;
procedure TMiniBrowserFrm.Useragent1Click(Sender: TObject);
var
TempUA : string;
begin
TempUA := inputbox('MiniBrowser demo', 'Set new user agent string', '');
if (length(TempUA) > 0) then
Chromium1.SetUserAgentOverride(TempUA);
end;
procedure TMiniBrowserFrm.BrowserCreatedMsg(var aMessage : TMessage);
begin
CEFWindowParent1.UpdateSize;
NavControlPnl.Enabled := True;
end;
procedure TMiniBrowserFrm.BrowserDestroyMsg(var aMessage : TMessage);
begin
FreeAndNil(CEFWindowParent1);
end;
procedure TMiniBrowserFrm.Acceptlanguage1Click(Sender: TObject);
var
TempLanguageList : ustring;
begin
TempLanguageList := Chromium1.AcceptLanguageList;
if (length(TempLanguageList) = 0) then TempLanguageList := Chromium1.Options.AcceptLanguageList;
if (length(TempLanguageList) = 0) then TempLanguageList := GlobalCEFApp.AcceptLanguageList;
Chromium1.AcceptLanguageList := InputBox('Language', 'Accept language list', TempLanguageList);
end;
procedure TMiniBrowserFrm.AddURL(const aURL : string);
begin
if (URLCbx.Items.IndexOf(aURL) < 0) then URLCbx.Items.Add(aURL);
URLCbx.Text := aURL;
end;
procedure TMiniBrowserFrm.akescreenshot1Click(Sender: TObject);
begin
inc(FDevToolsMsgID);
FScreenshotMsgID := FDevToolsMsgID;
Chromium1.ExecuteDevToolsMethod(FScreenshotMsgID, 'Page.captureScreenshot', nil);
end;
procedure TMiniBrowserFrm.Chromium1DevToolsMethodResult( Sender : TObject;
const browser : ICefBrowser;
message_id : Integer;
success : Boolean;
const result : ICefValue);
var
TempDict : ICefDictionaryValue;
TempValue : ICefValue;
TempResult : WPARAM;
TempCode : integer;
TempMessage : string;
begin
FDevToolsMsgValue := '';
TempResult := 0;
if success then
begin
TempResult := 1;
FDevToolsMsgValue := '';
if (result <> nil) then
begin
TempDict := result.GetDictionary;
if (TempDict <> nil) and (TempDict.GetSize > 0) then
begin
TempValue := TempDict.GetValue('data');
if (TempValue <> nil) and (TempValue.GetType = VTYPE_STRING) then
FDevToolsMsgValue := TempValue.GetString;
end;
end;
end
else
if (result <> nil) then
begin
TempDict := result.GetDictionary;
if (TempDict <> nil) then
begin
TempCode := 0;
TempMessage := '';
TempValue := TempDict.GetValue('code');
if (TempValue <> nil) and (TempValue.GetType = VTYPE_INT) then
TempCode := TempValue.GetInt;
TempValue := TempDict.GetValue('message');
if (TempValue <> nil) and (TempValue.GetType = VTYPE_STRING) then
TempMessage := TempValue.GetString;
if (length(TempMessage) > 0) then
FDevToolsMsgValue := 'DevTools Error (' + inttostr(TempCode) + ') : ' + quotedstr(TempMessage);
end;
end;
PostMessage(Handle, MINIBROWSER_DTDATA_AVLBL, TempResult, message_id);
end;
procedure TMiniBrowserFrm.DevToolsDataAvailableMsg(var aMessage : TMessage);
var
TempData : TBytes;
TempFile : TFileStream;
TempLen : integer;
begin
if (aMessage.WParam <> 0) then
begin
if (length(FDevToolsMsgValue) > 0) then
begin
TempData := nil;
if (aMessage.LParam = FScreenshotMsgID) then
begin
SaveDialog1.DefaultExt := 'png';
SaveDialog1.Filter := 'PNG files (*.png)|*.PNG';
{$IFDEF DELPHI21_UP}
// TO-DO: TNetEncoding was a new feature in Delphi XE7. Replace
// TNetEncoding.Base64.DecodeStringToBytes with Soap.EncdDecd.DecodeBase64 for older Delphi versions
TempData := TNetEncoding.Base64.DecodeStringToBytes(FDevToolsMsgValue);
{$ENDIF}
end
else
if (aMessage.LParam = FMHTMLMsgID) then
begin
SaveDialog1.DefaultExt := 'mhtml';
SaveDialog1.Filter := 'MHTML files (*.mhtml)|*.MHTML';
TempData := BytesOf(FDevToolsMsgValue);
end
else
begin
SaveDialog1.DefaultExt := '';
SaveDialog1.Filter := 'All files (*.*)|*.*';
{$IFDEF DELPHI21_UP}
// TO-DO: TNetEncoding was a new feature in Delphi XE7. Replace
// TNetEncoding.Base64.DecodeStringToBytes with Soap.EncdDecd.DecodeBase64 for older Delphi versions
TempData := TNetEncoding.Base64.DecodeStringToBytes(FDevToolsMsgValue);
{$ENDIF}
end;
TempLen := length(TempData);
if (TempLen > 0) then
begin
TempFile := nil;
if SaveDialog1.Execute then
try
try
TempFile := TFileStream.Create(SaveDialog1.FileName, fmCreate);
TempFile.WriteBuffer(TempData[0], TempLen);
showmessage('File saved successfully');
except
showmessage('There was an error saving the file');
end;
finally
if (TempFile <> nil) then TempFile.Free;
end;
end
else
showmessage('There was an error decoding the data');
end
else
showmessage('DevTools method executed successfully!');
end
else
if (length(FDevToolsMsgValue) > 0) then
showmessage(FDevToolsMsgValue)
else
showmessage('There was an error in the DevTools method');
end;
procedure TMiniBrowserFrm.ShowDevToolsMsg(var aMessage : TMessage);
var
TempPoint : TPoint;
begin
TempPoint.x := (aMessage.wParam shr 16) and $FFFF;
TempPoint.y := aMessage.wParam and $FFFF;
ShowDevTools(TempPoint);
end;
procedure TMiniBrowserFrm.HideDevToolsMsg(var aMessage : TMessage);
begin
HideDevTools;
Chromium1.SetFocus(True);
end;
procedure TMiniBrowserFrm.Inczoom1Click(Sender: TObject);
begin
Chromium1.IncZoomStep;
end;
procedure TMiniBrowserFrm.Openfile1Click(Sender: TObject);
begin
OpenDialog1.Filter := 'Any file (*.*)|*.*';
if OpenDialog1.Execute then
begin
// This is a quick solution to load files. The file URL should be properly encoded.
Chromium1.LoadURL('file:///' + OpenDialog1.FileName);
end;
end;
procedure TMiniBrowserFrm.OpenfilewithaDAT1Click(Sender: TObject);
var
TempFile : TMemoryStream;
begin
TempFile := nil;
try
try
OpenDialog1.Filter := 'HTML files (*.html)|*.HTML;*.HTM|PDF files (*.pdf)|*.PDF';
if OpenDialog1.Execute then
begin
// Use TByteStream instead of TMemoryStream if your Delphi version supports it.
TempFile := TMemoryStream.Create;
TempFile.LoadFromFile(OpenDialog1.FileName);
if (OpenDialog1.FilterIndex = 1) then
Chromium1.LoadResource(TempFile, 'text/html', 'utf-8')
else
Chromium1.LoadResource(TempFile, 'application/pdf', 'utf-8');
end;
except
on e : exception do
if CustomExceptionHandler('TMiniBrowserFrm.OpenfilewithaDAT1Click', e) then raise;
end;
finally
if (TempFile <> nil) then FreeAndNil(TempFile);
end;
end;
procedure TMiniBrowserFrm.PopupMenu1Popup(Sender: TObject);
begin
if DevTools.Visible then
DevTools1.Caption := 'Hide DevTools'
else
DevTools1.Caption := 'Show DevTools';
end;
procedure TMiniBrowserFrm.Preferences1Click(Sender: TObject);
begin
case Chromium1.ProxyScheme of
psSOCKS4 : PreferencesFrm.ProxySchemeCb.ItemIndex := 1;
psSOCKS5 : PreferencesFrm.ProxySchemeCb.ItemIndex := 2;
else PreferencesFrm.ProxySchemeCb.ItemIndex := 0;
end;
PreferencesFrm.ProxyTypeCbx.ItemIndex := Chromium1.ProxyType;
PreferencesFrm.ProxyServerEdt.Text := Chromium1.ProxyServer;
PreferencesFrm.ProxyPortEdt.Text := inttostr(Chromium1.ProxyPort);
PreferencesFrm.ProxyUsernameEdt.Text := Chromium1.ProxyUsername;
PreferencesFrm.ProxyPasswordEdt.Text := Chromium1.ProxyPassword;
PreferencesFrm.ProxyScriptURLEdt.Text := Chromium1.ProxyScriptURL;
PreferencesFrm.ProxyByPassListEdt.Text := Chromium1.ProxyByPassList;
PreferencesFrm.HeaderNameEdt.Text := Chromium1.CustomHeaderName;
PreferencesFrm.HeaderValueEdt.Text := Chromium1.CustomHeaderValue;
PreferencesFrm.MaxConnectionsPerProxyEdt.Value := Chromium1.MaxConnectionsPerProxy;
if (PreferencesFrm.ShowModal = mrOk) then
begin
Chromium1.ProxyType := PreferencesFrm.ProxyTypeCbx.ItemIndex;
Chromium1.ProxyServer := PreferencesFrm.ProxyServerEdt.Text;
Chromium1.ProxyPort := strtoint(PreferencesFrm.ProxyPortEdt.Text);
Chromium1.ProxyUsername := PreferencesFrm.ProxyUsernameEdt.Text;
Chromium1.ProxyPassword := PreferencesFrm.ProxyPasswordEdt.Text;
Chromium1.ProxyScriptURL := PreferencesFrm.ProxyScriptURLEdt.Text;
Chromium1.ProxyByPassList := PreferencesFrm.ProxyByPassListEdt.Text;
Chromium1.CustomHeaderName := PreferencesFrm.HeaderNameEdt.Text;
Chromium1.CustomHeaderValue := PreferencesFrm.HeaderValueEdt.Text;
Chromium1.MaxConnectionsPerProxy := PreferencesFrm.MaxConnectionsPerProxyEdt.Value;
case PreferencesFrm.ProxySchemeCb.ItemIndex of
1 : Chromium1.ProxyScheme := psSOCKS4;
2 : Chromium1.ProxyScheme := psSOCKS5;
else Chromium1.ProxyScheme := psHTTP;
end;
Chromium1.UpdatePreferences;
end;
end;
procedure TMiniBrowserFrm.Print1Click(Sender: TObject);
begin
Chromium1.Print;
end;
procedure TMiniBrowserFrm.PrintinPDF1Click(Sender: TObject);
begin
SaveDialog1.DefaultExt := 'pdf';
SaveDialog1.Filter := 'PDF files (*.pdf)|*.PDF';
if SaveDialog1.Execute and (length(SaveDialog1.FileName) > 0) then
Chromium1.PrintToPDF(SaveDialog1.FileName, Chromium1.DocumentURL, Chromium1.DocumentURL);
end;
procedure TMiniBrowserFrm.ConfigBtnClick(Sender: TObject);
var
TempPoint : TPoint;
begin
TempPoint.x := ConfigBtn.left;
TempPoint.y := ConfigBtn.top + ConfigBtn.Height;
TempPoint := ConfigPnl.ClientToScreen(TempPoint);
PopupMenu1.Popup(TempPoint.x, TempPoint.y);
end;
procedure TMiniBrowserFrm.CopyHTMLMsg(var aMessage : TMessage);
begin
Chromium1.RetrieveHTML;
end;
procedure TMiniBrowserFrm.CopyAllTextMsg(var aMessage : TMessage);
var
TempName : string;
begin
TempName := InputBox('Frame name', 'Type the fame name or leave it blank to select the main frame :', '');
Chromium1.RetrieveText(TempName);
end;
procedure TMiniBrowserFrm.CopyFramesIDsMsg(var aMessage : TMessage);
var
i : NativeUInt;
TempCount : NativeUInt;
TempArray : TCefFrameIdentifierArray;
TempString : string;
begin
TempCount := Chromium1.FrameCount;
if Chromium1.GetFrameIdentifiers(TempCount, TempArray) then
begin
TempString := '';
i := 0;
while (i < TempCount) do
begin
TempString := TempString + inttostr(TempArray[i]) + CRLF;
inc(i);
end;
clipboard.AsText := TempString;
end;
end;
procedure TMiniBrowserFrm.CopyFramesNamesMsg(var aMessage : TMessage);
var
TempSL : TStringList;
begin
try
TempSL := TStringList.Create;
if Chromium1.GetFrameNames(TStrings(TempSL)) then clipboard.AsText := TempSL.Text;
finally
FreeAndNil(TempSL);
end;
end;
procedure TMiniBrowserFrm.ShowResponseMsg(var aMessage : TMessage);
begin
SimpleTextViewerFrm.Memo1.Lines.Clear;
SimpleTextViewerFrm.Memo1.Lines.Add('--------------------------');
SimpleTextViewerFrm.Memo1.Lines.Add('Request headers : ');
SimpleTextViewerFrm.Memo1.Lines.Add('--------------------------');
if (FRequest <> nil) then SimpleTextViewerFrm.Memo1.Lines.AddStrings(FRequest);
SimpleTextViewerFrm.Memo1.Lines.Add('');
SimpleTextViewerFrm.Memo1.Lines.Add('--------------------------');
SimpleTextViewerFrm.Memo1.Lines.Add('Response headers : ');
SimpleTextViewerFrm.Memo1.Lines.Add('--------------------------');
if (FResponse <> nil) then SimpleTextViewerFrm.Memo1.Lines.AddStrings(FResponse);
SimpleTextViewerFrm.ShowModal;
end;
procedure TMiniBrowserFrm.ShowNavigationMsg(var aMessage : TMessage);
begin
SimpleTextViewerFrm.Memo1.Lines.Clear;
SimpleTextViewerFrm.Memo1.Lines.AddStrings(FNavigation);
SimpleTextViewerFrm.ShowModal;
end;
procedure TMiniBrowserFrm.SaveasMHTML1Click(Sender: TObject);
var
TempParams : ICefDictionaryValue;
begin
try
inc(FDevToolsMsgID);
FMHTMLMsgID := FDevToolsMsgID;
TempParams := TCefDictionaryValueRef.New;
TempParams.SetString('format', 'mhtml');
Chromium1.ExecuteDevToolsMethod(FMHTMLMsgID, 'Page.captureSnapshot', TempParams);
finally
TempParams := nil;
end;
end;
procedure TMiniBrowserFrm.SavePreferencesMsg(var aMessage : TMessage);
begin
SaveDialog1.DefaultExt := 'txt';
SaveDialog1.Filter := 'Text files (*.txt)|*.TXT';
if SaveDialog1.Execute and (length(SaveDialog1.FileName) > 0) then
Chromium1.SavePreferences(SaveDialog1.FileName);
end;
procedure TMiniBrowserFrm.TakeSnapshotMsg(var aMessage : TMessage);
var
TempBitmap : TBitmap;
begin
TempBitmap := nil;
try
SaveDialog1.DefaultExt := 'bmp';
SaveDialog1.Filter := 'Bitmap files (*.bmp)|*.BMP';
if SaveDialog1.Execute and
(length(SaveDialog1.FileName) > 0) and
Chromium1.TakeSnapshot(TempBitmap) then
TempBitmap.SaveToFile(SaveDialog1.FileName);
finally
if (TempBitmap <> nil) then FreeAndNil(TempBitmap);
end;
end;
procedure TMiniBrowserFrm.WMMove(var aMessage : TWMMove);
begin
inherited;
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
end;
procedure TMiniBrowserFrm.WMMoving(var aMessage : TMessage);
begin
inherited;
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
end;
procedure TMiniBrowserFrm.WMEnterMenuLoop(var aMessage: TMessage);
begin
inherited;
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := True;
end;
procedure TMiniBrowserFrm.WMExitMenuLoop(var aMessage: TMessage);
begin
inherited;
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := False;
end;
procedure TMiniBrowserFrm.Deczoom1Click(Sender: TObject);
begin
Chromium1.DecZoomStep;
end;
procedure TMiniBrowserFrm.DevTools1Click(Sender: TObject);
begin
if DevTools.Visible then
HideDevTools
else
ShowDevTools;
end;
procedure TMiniBrowserFrm.Downloadimage1Click(Sender: TObject);
var
TempURL : string;
begin
TempURL := InputBox('Download Image', 'URL:', 'https://www.briskbard.com/images/logo.png');
if (length(TempURL) > 0) then
Chromium1.DownloadImage(TempURL, False, 0, False);
end;
procedure TMiniBrowserFrm.Chromium1DownloadImageFinished( Sender : TObject;
const imageUrl : ustring;
httpStatusCode : Integer;
const image : ICefImage);
var
TempBinValue : ICefBinaryValue;
TempWidth : integer;
TempHeight : integer;
TempBuffer : TBytes;
TempPointer : pointer;
TempSize : NativeUInt;
TempStream : TFileStream;
TempParts : TUrlParts;
i : integer;
begin
TempStream := nil;
try
try
if (httpStatusCode = 200) and (image <> nil) and not(image.IsEmpty) then
begin
TempBinValue := image.GetAsPng(1, True, TempWidth, TempHeight);
if (TempBinValue <> nil) and
TempBinValue.IsValid then
begin
TempSize := TempBinValue.Size;
SaveDialog1.DefaultExt := 'png';
SaveDialog1.Filter := 'PNG files (*.png)|*.PNG';
CefParseUrl(imageUrl, TempParts);
i := LastDelimiter('/', TempParts.path);
// TODO : The file name should be sanitized.
if (i > 0) then
SaveDialog1.FileName := copy(TempParts.path, succ(i), length(TempParts.path))
else
SaveDialog1.FileName := TempParts.path;
if (TempSize > 0) and
SaveDialog1.Execute and
(length(SaveDialog1.FileName) > 0) then
begin
SetLength(TempBuffer, TempSize);
TempPointer := @TempBuffer[0];
TempSize := TempBinValue.GetData(TempPointer, TempSize, 0);
if (TempSize > 0) then
begin
TempStream := TFileStream.Create(SaveDialog1.FileName, fmCreate);
TempStream.Write(TempBuffer, TempSize);
end;
end;
end;
end;
except
on e : exception do
if CustomExceptionHandler('Chromium1DownloadImageFinishedEvent', e) then raise;
end;
finally
if (TempStream <> nil) then FreeAndNil(TempStream);
SetLength(TempBuffer, 0);
end;
end;
procedure TMiniBrowserFrm.ShowDevTools(aPoint : TPoint);
begin
Splitter1.Visible := True;
DevTools.Visible := True;
DevTools.Width := Width div 4;
Chromium1.ShowDevTools(aPoint, DevTools);
end;
procedure TMiniBrowserFrm.ShowDevTools;
var
TempPoint : TPoint;
begin
TempPoint.x := low(integer);
TempPoint.y := low(integer);
ShowDevTools(TempPoint);
end;
procedure TMiniBrowserFrm.HideDevTools;
begin
Chromium1.CloseDevTools(DevTools);
Splitter1.Visible := False;
DevTools.Visible := False;
DevTools.Width := 0;
end;
end.
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