mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
150 lines
4.6 KiB
ObjectPascal
150 lines
4.6 KiB
ObjectPascal
// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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// browser in Delphi applications.
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//
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// The original license of DCEF3 still applies to CEF4Delphi.
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//
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// For more information about CEF4Delphi visit :
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// https://www.briskbard.com/index.php?lang=en&pageid=cef
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//
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// Copyright © 2021 Salvador Diaz Fau. All rights reserved.
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//
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// ************************************************************************
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// ************ vvvv Original license and comments below vvvv *************
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// ************************************************************************
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(*
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* Delphi Chromium Embedded 3
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*
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* Usage allowed under the restrictions of the Lesser GNU General Public License
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* or alternatively the restrictions of the Mozilla Public License 1.1
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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* the specific language governing rights and limitations under the License.
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*
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* Unit owner : Henri Gourvest <hgourvest@gmail.com>
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* Web site : http://www.progdigy.com
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* Repository : http://code.google.com/p/delphichromiumembedded/
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* Group : http://groups.google.com/group/delphichromiumembedded
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*
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* Embarcadero Technologies, Inc is not permitted to use or redistribute
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* this source code without explicit permission.
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*
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*)
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unit uBrowserTab;
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{$MODE Delphi}
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{$I cef.inc}
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interface
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uses
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LCLIntf, LCLType, LMessages, Classes, Messages, ComCtrls, Controls,
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Forms,
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uBrowserFrame;
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type
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TBrowserTab = class(TTabSheet)
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protected
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FBrowserFrame : TBrowserFrame;
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FTabID : cardinal;
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function GetParentForm : TCustomForm;
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function PostFormMessage(aMsg : cardinal; aWParam : WPARAM = 0; aLParam : LPARAM = 0) : boolean;
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procedure BrowserFrame_OnBrowserDestroyed(Sender: TObject);
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procedure BrowserFrame_OnBrowserTitleChange(Sender: TObject; const aTitle : string);
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property ParentForm : TCustomForm read GetParentForm;
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public
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constructor Create(AOwner: TComponent; aTabID : cardinal; const aCaption : string); reintroduce;
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procedure NotifyMoveOrResizeStarted;
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procedure CreateBrowser(const aHomepage : string);
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procedure CloseBrowser;
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property TabID : cardinal read FTabID;
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end;
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implementation
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uses
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uMainForm;
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constructor TBrowserTab.Create(AOwner: TComponent; aTabID : cardinal; const aCaption : string);
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begin
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inherited Create(AOwner);
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FTabID := aTabID;
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Caption := aCaption;
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FBrowserFrame := nil;
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end;
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function TBrowserTab.GetParentForm : TCustomForm;
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var
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TempParent : TWinControl;
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begin
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TempParent := Parent;
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while (TempParent <> nil) and not(TempParent is TCustomForm) do
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TempParent := TempParent.Parent;
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if (TempParent <> nil) and (TempParent is TCustomForm) then
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Result := TCustomForm(TempParent)
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else
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Result := nil;
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end;
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function TBrowserTab.PostFormMessage(aMsg : cardinal; aWParam : WPARAM; aLParam : LPARAM) : boolean;
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var
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TempForm : TCustomForm;
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begin
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TempForm := ParentForm;
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Result := (TempForm <> nil) and
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TempForm.HandleAllocated and
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PostMessage(TempForm.Handle, aMsg, aWParam, aLParam);
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end;
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procedure TBrowserTab.NotifyMoveOrResizeStarted;
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begin
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FBrowserFrame.NotifyMoveOrResizeStarted;
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end;
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procedure TBrowserTab.CreateBrowser(const aHomepage : string);
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begin
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FBrowserFrame := TBrowserFrame.Create(self);
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FBrowserFrame.Parent := self;
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FBrowserFrame.Align := alClient;
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FBrowserFrame.Visible := True;
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FBrowserFrame.Homepage := aHomepage;
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FBrowserFrame.OnBrowserDestroyed := BrowserFrame_OnBrowserDestroyed;
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FBrowserFrame.OnBrowserTitleChange := BrowserFrame_OnBrowserTitleChange;
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FBrowserFrame.CreateBrowser;
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end;
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procedure TBrowserTab.CloseBrowser;
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begin
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if (FBrowserFrame <> nil) then FBrowserFrame.CloseBrowser;
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end;
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procedure TBrowserTab.BrowserFrame_OnBrowserDestroyed(Sender: TObject);
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begin
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// This event is executed in a CEF thread so we have to send a message to
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// destroy the tab in the main application thread.
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PostFormMessage(CEF_DESTROYTAB, TabID);
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end;
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procedure TBrowserTab.BrowserFrame_OnBrowserTitleChange(Sender: TObject; const aTitle : string);
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begin
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Caption := aTitle;
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end;
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end.
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