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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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5
demos/Delphi_VCL/JavaScript/JSWindowBindingSubProcess/uJSSimpleWindowBinding.dfm
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@ -76,4 +76,9 @@ object JSSimpleWindowBindingFrm: TJSSimpleWindowBindingFrm
Left = 32
Top = 288
end
object CEFSentinel1: TCEFSentinel
OnClose = CEFSentinel1Close
Left = 32
Top = 352
end
end

16
demos/Delphi_VCL/JavaScript/JSWindowBindingSubProcess/uJSSimpleWindowBinding.pas
View File

@ -50,7 +50,7 @@ uses
Controls, Forms, Dialogs, StdCtrls, ExtCtrls, ComCtrls,
{$ENDIF}
uCEFChromium, uCEFWindowParent, uCEFInterfaces, uCEFApplication, uCEFTypes,
uCEFConstants, uCEFv8Value, uCEFWinControl;
uCEFConstants, uCEFv8Value, uCEFWinControl, uCEFSentinel;
type
TJSSimpleWindowBindingFrm = class(TForm)
@ -60,6 +60,7 @@ type
CEFWindowParent1: TCEFWindowParent;
Chromium1: TChromium;
Timer1: TTimer;
CEFSentinel1: TCEFSentinel;
procedure FormShow(Sender: TObject);
procedure GoBtnClick(Sender: TObject);
procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
@ -78,6 +79,7 @@ type
var aAction : TCefCloseBrowserAction);
procedure Chromium1BeforeClose(Sender: TObject;
const browser: ICefBrowser);
procedure CEFSentinel1Close(Sender: TObject);
protected
FText : string;
// Variables to control when can we destroy the form safely
@ -113,7 +115,8 @@ implementation
// =================
// 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.
// 3. TChromium.OnBeforeClose calls TCEFSentinel.Start, which will trigger TCEFSentinel.OnClose when the renderer processes are closed.
// 4. TCEFSentinel.OnClose sets FCanClose := True and sends WM_CLOSE to the form.
procedure CreateGlobalCEFApp;
begin
@ -138,6 +141,12 @@ begin
Chromium1.LoadURL(Edit1.Text);
end;
procedure TJSSimpleWindowBindingFrm.CEFSentinel1Close(Sender: TObject);
begin
FCanClose := True;
PostMessage(Handle, WM_CLOSE, 0, 0);
end;
procedure TJSSimpleWindowBindingFrm.Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
begin
PostMessage(Handle, CEF_AFTERCREATED, 0, 0);
@ -209,8 +218,7 @@ end;
procedure TJSSimpleWindowBindingFrm.Chromium1BeforeClose(
Sender: TObject; const browser: ICefBrowser);
begin
FCanClose := True;
PostMessage(Handle, WM_CLOSE, 0, 0);
CEFSentinel1.Start;
end;
procedure TJSSimpleWindowBindingFrm.Chromium1Close(