mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 08:15:55 +01:00
257 lines
8.6 KiB
ObjectPascal
257 lines
8.6 KiB
ObjectPascal
unit uChildForm;
|
|
|
|
{$mode objfpc}{$H+}
|
|
|
|
{$I ../../../source/cef.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, StdCtrls,
|
|
LMessages, SyncObjs,
|
|
uCEFChromium, uCEFTypes, uCEFInterfaces, uCEFConstants, uCEFWindowParent,
|
|
uCEFWinControl, uCEFLinkedWindowParent, uCEFChromiumEvents;
|
|
|
|
type
|
|
{ TChildForm }
|
|
TChildForm = class(TForm)
|
|
CEFLinkedWindowParent1: TCEFLinkedWindowParent;
|
|
Chromium1: TChromium;
|
|
|
|
procedure CEFLinkedWindowParent1Enter(Sender: TObject);
|
|
procedure CEFLinkedWindowParent1Exit(Sender: TObject);
|
|
|
|
procedure FormCreate(Sender: TObject);
|
|
procedure FormDestroy(Sender: TObject);
|
|
procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
|
|
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
|
|
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 Chromium1TitleChange(Sender: TObject; const browser: ICefBrowser; const title: ustring);
|
|
procedure Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction : TCefCloseBrowserAction);
|
|
procedure Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
|
|
procedure Chromium1GotFocus(Sender: TObject; const browser: ICefBrowser);
|
|
procedure FormShow(Sender: TObject);
|
|
|
|
protected
|
|
FCanClose : boolean;
|
|
FClosing : boolean;
|
|
FClientInitialized : boolean;
|
|
FPopupFeatures : TCefPopupFeatures;
|
|
FCaption : ustring;
|
|
|
|
procedure WMMove(var aMessage: TLMMove); message LM_MOVE;
|
|
procedure WMSize(var aMessage: TLMSize); message LM_SIZE;
|
|
procedure WMWindowPosChanged(var aMessage: TLMWindowPosChanged); message LM_WINDOWPOSCHANGED;
|
|
|
|
procedure BrowserCloseFormMsg(Data: PtrInt);
|
|
procedure BrowserSetFocusMsg(Data: PtrInt);
|
|
procedure BrowserTitleChangeMsg(Data: PtrInt);
|
|
|
|
public
|
|
procedure AfterConstruction; override;
|
|
function CreateClientHandler(var windowInfo : TCefWindowInfo; var client : ICefClient; const targetFrameName : string; const popupFeatures : TCefPopupFeatures) : boolean;
|
|
procedure ApplyPopupFeatures;
|
|
procedure SendCompMessage(aMsg : cardinal; aData : PtrInt = 0);
|
|
|
|
property ClientInitialized : boolean read FClientInitialized;
|
|
property Closing : boolean read FClosing;
|
|
end;
|
|
|
|
implementation
|
|
|
|
{$R *.dfm}
|
|
|
|
uses
|
|
Math,
|
|
uCEFMiscFunctions, uCEFApplication, uMainForm;
|
|
|
|
// 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 TChildForm.AfterConstruction;
|
|
begin
|
|
inherited AfterConstruction;
|
|
|
|
CreateHandle;
|
|
|
|
CEFLinkedWindowParent1.CreateHandle;
|
|
end;
|
|
|
|
function TChildForm.CreateClientHandler(var windowInfo : TCefWindowInfo;
|
|
var client : ICefClient;
|
|
const targetFrameName : string;
|
|
const popupFeatures : TCefPopupFeatures) : boolean;
|
|
var
|
|
TempRect : TRect;
|
|
begin
|
|
if Chromium1.CreateClientHandler(client, False) then
|
|
begin
|
|
Result := True;
|
|
FClientInitialized := True;
|
|
FPopupFeatures := popupFeatures;
|
|
TempRect := CEFLinkedWindowParent1.BoundsRect;
|
|
|
|
if (FPopupFeatures.widthset <> 0) then TempRect.Right := max(FPopupFeatures.width, 100);
|
|
if (FPopupFeatures.heightset <> 0) then TempRect.Bottom := max(FPopupFeatures.height, 100);
|
|
|
|
WindowInfoAsChild(windowInfo, CEFLinkedWindowParent1.Handle, TempRect, '');
|
|
end
|
|
else
|
|
Result := False;
|
|
end;
|
|
|
|
procedure TChildForm.ApplyPopupFeatures;
|
|
begin
|
|
if (FPopupFeatures.xset <> 0) then Chromium1.SetFormLeftTo(FPopupFeatures.x);
|
|
if (FPopupFeatures.yset <> 0) then Chromium1.SetFormTopTo(FPopupFeatures.y);
|
|
if (FPopupFeatures.widthset <> 0) then Chromium1.ResizeFormWidthTo(FPopupFeatures.width);
|
|
if (FPopupFeatures.heightset <> 0) then Chromium1.ResizeFormHeightTo(FPopupFeatures.height);
|
|
end;
|
|
|
|
procedure TChildForm.Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
|
|
begin
|
|
// We must wait until all browsers trigger the TChromium.OnBeforeClose event
|
|
// in order to close the application safely or we will have shutdown issues.
|
|
FCanClose := True;
|
|
SendCompMessage(CEF_BEFORECLOSE);
|
|
end;
|
|
|
|
procedure TChildForm.Chromium1Close(Sender: TObject; const browser: ICefBrowser; var aAction : TCefCloseBrowserAction);
|
|
begin
|
|
// continue closing the browser
|
|
aAction := cbaClose;
|
|
end;
|
|
|
|
procedure TChildForm.Chromium1TitleChange(Sender: TObject; const browser: ICefBrowser; const title: ustring);
|
|
begin
|
|
FCaption := title;
|
|
SendCompMessage(CEF_TITLECHANGE);
|
|
end;
|
|
|
|
procedure TChildForm.WMMove(var aMessage : TLMMove);
|
|
begin
|
|
inherited;
|
|
Chromium1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TChildForm.WMSize(var aMessage: TLMSize);
|
|
begin
|
|
inherited;
|
|
Chromium1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TChildForm.WMWindowPosChanged(var aMessage: TLMWindowPosChanged);
|
|
begin
|
|
inherited;
|
|
Chromium1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TChildForm.FormClose(Sender: TObject; var CloseAction: TCloseAction);
|
|
begin
|
|
CloseAction := caFree;
|
|
end;
|
|
|
|
procedure TChildForm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
begin
|
|
CanClose := FCanClose;
|
|
|
|
if not(FClosing) then
|
|
begin
|
|
FClosing := True;
|
|
Visible := False;
|
|
Chromium1.CloseBrowser(True);
|
|
end;
|
|
end;
|
|
|
|
procedure TChildForm.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
|
|
case targetDisposition of
|
|
WOD_NEW_FOREGROUND_TAB,
|
|
WOD_NEW_BACKGROUND_TAB,
|
|
WOD_NEW_WINDOW : Result := True; // For simplicity, this demo blocks new tabs and new windows.
|
|
|
|
WOD_NEW_POPUP : Result := not(TMainForm(Owner).CreateClientHandler(windowInfo, client, targetFrameName, popupFeatures));
|
|
|
|
else Result := False;
|
|
end;
|
|
end;
|
|
|
|
procedure TChildForm.FormCreate(Sender: TObject);
|
|
begin
|
|
FCanClose := False;
|
|
FClosing := False;
|
|
FClientInitialized := False;
|
|
end;
|
|
|
|
// This is a workaround for the CEF issue #2026
|
|
// https://bitbucket.org/chromiumembedded/cef/issues/2026/multiple-major-keyboard-focus-issues-on
|
|
// We use CEFLinkedWindowParent1.OnEnter, CEFLinkedWindowParent1.OnExit and
|
|
// TChromium.OnGotFocus to avoid most of the focus issues.
|
|
// CEFLinkedWindowParent1.TabStop must be TRUE.
|
|
procedure TChildForm.CEFLinkedWindowParent1Enter(Sender: TObject);
|
|
begin
|
|
if not(csDesigning in ComponentState) and
|
|
Chromium1.Initialized and
|
|
not(Chromium1.FrameIsFocused) then
|
|
Chromium1.SetFocus(True);
|
|
end;
|
|
|
|
procedure TChildForm.CEFLinkedWindowParent1Exit(Sender: TObject);
|
|
begin
|
|
if not(csDesigning in ComponentState) then
|
|
Chromium1.SendCaptureLostEvent;
|
|
end;
|
|
|
|
procedure TChildForm.Chromium1GotFocus(Sender: TObject;
|
|
const browser: ICefBrowser);
|
|
begin
|
|
SendCompMessage(CEF_SETFOCUS);
|
|
end;
|
|
|
|
procedure TChildForm.FormShow(Sender: TObject);
|
|
begin
|
|
|
|
end;
|
|
|
|
procedure TChildForm.FormDestroy(Sender: TObject);
|
|
begin
|
|
if FClientInitialized then
|
|
TMainForm(Owner).SendCompMessage(CEF_CHILDDESTROYED);
|
|
end;
|
|
|
|
procedure TChildForm.BrowserCloseFormMsg(Data: PtrInt);
|
|
begin
|
|
Close;
|
|
end;
|
|
|
|
procedure TChildForm.BrowserSetFocusMsg(Data: PtrInt);
|
|
begin
|
|
CEFLinkedWindowParent1.SetFocus;
|
|
end;
|
|
|
|
procedure TChildForm.BrowserTitleChangeMsg(Data: PtrInt);
|
|
begin
|
|
Caption := FCaption;
|
|
end;
|
|
|
|
procedure TChildForm.SendCompMessage(aMsg : cardinal; aData : PtrInt);
|
|
begin
|
|
case aMsg of
|
|
CEF_BEFORECLOSE : Application.QueueAsyncCall(@BrowserCloseFormMsg, aData);
|
|
CEF_SETFOCUS : Application.QueueAsyncCall(@BrowserSetFocusMsg, aData);
|
|
CEF_TITLECHANGE : Application.QueueAsyncCall(@BrowserTitleChangeMsg, aData);
|
|
end;
|
|
end;
|
|
|
|
end.
|