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{
*****************************************************************************
* WinCEWSDialogs.pp *
* ----------------- *
* *
* *
*****************************************************************************
*****************************************************************************
This file is part of the Lazarus Component Library (LCL)
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
}
unit WinCEWSDialogs;
{$mode delphi}
interface
uses
// RTL, FCL
SysUtils, Classes,
Windows,
// LCL
ShellCtrls, Forms, Dialogs, FileCtrl, Controls, ComCtrls,
LResources, ExtCtrls, Buttons, Graphics, StdCtrls,
LCLStrConsts, FileUtil, lazdialogs,
// Widgetset
WSDialogs, WSLCLClasses, InterfaceBase;
type
{ TWinCEWSCommonDialog }
TWinCEWSCommonDialog = class(TWSCommonDialog)
published
// class function CreateHandle(const ACommonDialog: TCommonDialog): THandle; override;
// class procedure DestroyHandle(const ACommonDialog: TCommonDialog); override;
end;
{ TWinCEWSFileDialog }
TWinCEWSFileDialog = class(TWSFileDialog)
published
class function CreateHandle(const ACommonDialog: TCommonDialog): THandle; override;
class procedure DestroyHandle(const ACommonDialog: TCommonDialog); override;
class procedure ShowModal(const ACommonDialog: TCommonDialog); override;
end;
{ TWinCEWSOpenDialog }
TWinCEWSOpenDialog = class(TWSOpenDialog)
published
// class function CreateHandle(const ACommonDialog: TCommonDialog): THandle; override;
// class procedure DestroyHandle(const ACommonDialog: TCommonDialog); override;
// class procedure ShowModal(const ACommonDialog: TCommonDialog); override;
end;
{ TWinCEWSSaveDialog }
TWinCEWSSaveDialog = class(TWSSaveDialog)
published
// class procedure ShowModal(const ACommonDialog: TCommonDialog); override;
end;
{ TWinCEWSSelectDirectoryDialog }
TWinCEWSSelectDirectoryDialog = class(TWSSelectDirectoryDialog)
published
class function CreateHandle(const ACommonDialog: TCommonDialog): THandle; override;
class procedure DestroyHandle(const ACommonDialog: TCommonDialog); override;
class procedure ShowModal(const ACommonDialog: TCommonDialog); override;
end;
{ TWinCEWSColorDialog }
TWinCEWSColorDialog = class(TWSColorDialog)
published
// class function CreateHandle(const ACommonDialog: TCommonDialog): THandle; override;
// class procedure ShowModal(const ACommonDialog: TCommonDialog); override;
// class procedure DestroyHandle(const ACommonDialog: TCommonDialog); override;
end;
{ TWinCEWSColorButton }
TWinCEWSColorButton = class(TWSColorButton)
published
end;
{ TWinCEWSFontDialog }
TWinCEWSFontDialog = class(TWSFontDialog)
published
// class function CreateHandle(const ACommonDialog: TCommonDialog): THandle; override;
end;
implementation
{$R wincedialogs.res}
type
{ TWinCEFileDialogForm }
TWinCEFileDialogForm = class(TForm)
private
procedure SetFilter();
public
// User interface
ShellTreeView: TShellTreeView;
ShellListView: TShellListView;
Panel: TPanel;
OkButton: TBitBtn;
CancelButton: TBitBtn;
SaveEdit: TEdit;
FilterComboBox: TFilterComboBox;
// Communication fields
LCLDialog: TFileDialog;
constructor Create(AOwner: TComponent; ALCLDialog: TFileDialog);
procedure HandleOkClick(ASender: TObject);
procedure HandleCancelClick(ASender: TObject);
procedure HandleCloseQuery(Sender : TObject; var CanClose : boolean);
procedure HandleEditChange(ASender: TObject);
procedure HandleSelectItem(Sender: TObject;
Item: TListItem; Selected: Boolean);
end;
{ TWinCEFileDialogForm }
procedure TWinCEFileDialogForm.SetFilter();
begin
if LCLDialog.Filter = '' then
FilterComboBox.Filter := Format(rsAllFiles,[GetAllFilesMask, GetAllFilesMask,''])
else
FilterComboBox.Filter := LCLDialog.Filter;
end;
{
The size of the window is determined only when creating the
handle, so any reference to TForm.Width and TForm.Height
here doesnt correspond to the final value.
}
constructor TWinCEFileDialogForm.Create(AOwner: TComponent; ALCLDialog: TFileDialog);
var
AImage: TPortableNetworkGraphic;
begin
inherited CreateNew(AOwner,1);
LCLDialog := ALCLDialog;
{$ifdef VerboseWinCE}
DebugLn(':>TWinCEFileDialogForm.Create Width=', Width,
' Height=', Height);
{$endif}
// Add the Panel to the dialog (Toolbar didn't work well)
Panel := TPanel.Create(Self);
Panel.Parent := Self;
Panel.Left := 0;
Panel.Height := 20;
Panel.Top := Height - Panel.Height;
Panel.Width := Width;
Panel.Align := alBottom;
AImage := TPortableNetworkGraphic.Create;
// ok button
OkButton := TBitBtn.Create(Panel);
OkButton.Parent := Panel;
OkButton.Height := 17;
OkButton.Width := 17;
AImage.LoadFromResourceName(hInstance, 'wincedialog_ok');
OkButton.Glyph.Assign(AImage);
OkButton.OnClick := HandleOkClick;
OkButton.Left := 0;
// cancel button
CancelButton := TBitBtn.Create(Panel);
CancelButton.Parent := Panel;
CancelButton.Height := 17;
CancelButton.Width := 17;
AImage.LoadFromResourceName(hInstance, 'wincedialog_cancel');
CancelButton.Glyph.Assign(AImage);
CancelButton.OnClick := HandleCancelClick;
CancelButton.Left := 20;
// dialog images
// the wincedialogs.lrs image is compiled with the script at
// lcl/images/wince/build.bat
//ToolBar.Images := TImageList.Create(Self);
//ToolBar.Images.AddLazarusResource('wincedialog_ok');
//ToolBar.Images.AddLazarusResource('wincedialog_cancel');
AImage.Free;
// Add the ShellTreeView to the dialog
ShellTreeView := TShellTreeView.Create(Self);
ShellTreeView.Parent := Self;
ShellTreeView.Left := 0;
ShellTreeView.Top := 0;
ShellTreeView.Width := Width;
ShellTreeView.Height := 100;
ShellTreeView.Align := alTop;
// Add the ShellListView to the dialog
ShellListView := TShellListView.Create(Self);
ShellListView.Parent := Self;
ShellListView.Left := 0;
ShellListView.Top := ShellTreeView.Height;
ShellListView.Width := Width;
ShellListView.Height := Height - ShellTreeView.Height - Panel.Height;
ShellListView.Align := alClient;
ShellListView.ShellTreeView := ShellTreeView;
ShellListView.ScrollBars := ssVertical;
ShellListView.OnSelectItem := HandleSelectItem;
// TEdit for save dialog
if LCLDialog is TSaveDialog then
begin
SaveEdit := TEdit.Create(Self);
SaveEdit.Parent := Self;
SaveEdit.Left := 0;
SaveEdit.Height := 20;
SaveEdit.Top := Height - Panel.Height - SaveEdit.Height;
SaveEdit.Width := Width;
SaveEdit.Align := alBottom;
SaveEdit.Text := SysUtils.ExtractFileName(LCLDialog.FileName);
SaveEdit.OnChange := HandleEditChange;
end;
// TFilterComboBox
FilterComboBox := TFilterComboBox.Create(Self);
FilterComboBox.Parent := Self;
FilterComboBox.Left := 0;
FilterComboBox.Height := 20;
FilterComboBox.Top := Height - Panel.Height - FilterComboBox.Height;
if SaveEdit <> nil then
FilterComboBox.Top := FilterComboBox.Top - SaveEdit.Height;
FilterComboBox.Width := Width;
FilterComboBox.Align := alBottom;
SetFilter();
FilterComboBox.ShellListView := ShellListView;
// In the save dialog it is enabled when there is a text in the TEdit
if (LCLDialog is TSaveDialog) then
OkButton.Enabled := SaveEdit.Text <> ''
// In a TOpenDialog the Ok button is only enabled when a file is selected
else
OkButton.Enabled := False;
// Form events
OnCloseQuery := HandleCloseQuery;
end;
// The Ok button code should be only a simple mrOk,
// because there is the dialog Ok button, which will
// always be active and will set the ModalResult to mrOk
// so the code needs to affect it too, and this can be
// done in CloseQuery
procedure TWinCEFileDialogForm.HandleOkClick(ASender: TObject);
begin
ModalResult := mrOk;
end;
procedure TWinCEFileDialogForm.HandleCancelClick(ASender: TObject);
begin
ModalResult := mrCancel;
end;
procedure TWinCEFileDialogForm.HandleCloseQuery(Sender: TObject;
var CanClose: boolean);
begin
if ModalResult = mrCancel then
begin
CanClose := True;
Exit;
end;
CanClose := False;
if (LCLDialog is TSaveDialog) then
begin
if SaveEdit.Text = '' then Exit;
LCLDialog.FileName := ShellTreeView.GetPathFromNode(ShellTreeView.Selected);
LCLDialog.FileName := IncludeTrailingPathDelimiter(LCLDialog.FileName);
LCLDialog.FileName := LCLDialog.FileName + SaveEdit.Text;
CanClose := True;
end
else
begin
if ShellListView.Selected = nil then Exit;
LCLDialog.FileName := ShellListView.GetPathFromItem(ShellListView.Selected);
CanClose := True;
end;
end;
procedure TWinCEFileDialogForm.HandleEditChange(ASender: TObject);
begin
OkButton.Enabled := SaveEdit.Text <> '';
end;
procedure TWinCEFileDialogForm.HandleSelectItem(Sender: TObject;
Item: TListItem; Selected: Boolean);
begin
// Selecting an item changes the filename in the TEdit
// in save dialogs
if (LCLDialog is TSaveDialog) and Selected then
begin
SaveEdit.Text := Item.Caption;
end
// In the OpenDialog the state of the Ok button is dependent
// on the selection of an item
else
begin
OkButton.Enabled := Selected;
end;
end;
{ TWinCEWSFileDialog }
class function TWinCEWSFileDialog.CreateHandle(const ACommonDialog: TCommonDialog): THandle;
var
ResultForm: TWinCEFileDialogForm absolute Result;
begin
Result := THandle(TWinCEFileDialogForm.Create(Application,
TFileDialog(ACommonDialog)));
end;
class procedure TWinCEWSFileDialog.DestroyHandle(const ACommonDialog: TCommonDialog);
var
ResultForm: TWinCEFileDialogForm;
begin
ResultForm := TWinCEFileDialogForm(ACommonDialog.Handle);
ResultForm.Free;
end;
class procedure TWinCEWSFileDialog.ShowModal(const ACommonDialog: TCommonDialog);
var
ResultForm: TWinCEFileDialogForm;
begin
ResultForm := TWinCEFileDialogForm(ACommonDialog.Handle);
ResultForm.ShowModal;
// Without setting UserChoice the app will be locked
ACommonDialog.UserChoice := ResultForm.ModalResult;
end;
{ TWinCEWSSelectDirectoryDialog }
class function TWinCEWSSelectDirectoryDialog.CreateHandle(
const ACommonDialog: TCommonDialog): THandle;
begin
Result := THandle(TLazSelectDirectoryDialog.Create(nil));
end;
class procedure TWinCEWSSelectDirectoryDialog.DestroyHandle(
const ACommonDialog: TCommonDialog);
var
Handle: TLazSelectDirectoryDialog;
begin
Handle := TLazSelectDirectoryDialog(ACommonDialog.Handle);
Handle.Free;
end;
class procedure TWinCEWSSelectDirectoryDialog.ShowModal(
const ACommonDialog: TCommonDialog);
var
Handle: TLazSelectDirectoryDialog;
OpenDialog: TOpenDialog absolute ACommonDialog;
begin
Handle := TLazSelectDirectoryDialog(ACommonDialog.Handle);
Handle.InitialDir := OpenDialog.InitialDir;
// Without setting UserChoice the app will be locked
if Handle.Execute then ACommonDialog.UserChoice := mrOk
else ACommonDialog.UserChoice := mrCancel;
OpenDialog.FileName := Handle.FileName;
end;
end.
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