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unit frm_bookmarks;
{$mode objfpc}{$H+}
interface
uses
SysUtils,
Classes,
fpg_base,
fpg_main,
fpg_form,
fpg_listbox,
fpg_button,
HelpBookmark;
type
TBookmarkCallback = procedure(Bookmark: TBookmark) of object;
TBookmarksForm = class(TfpgForm)
private
{@VFD_HEAD_BEGIN: BookmarksForm}
lbBookmarks: TfpgListBox;
btnRename: TfpgButton;
btnDelete: TfpgButton;
btnGoTo: TfpgButton;
btnHelp: TfpgButton;
btnClose: TfpgButton;
{@VFD_HEAD_END: BookmarksForm}
FBookmarkList: TList;
FOnBookmarksChanged: TNotifyEvent;
FOnGotoBookmark: TBookmarkCallback;
procedure lbBookmarksKeyPressed(Sender: TObject; var KeyCode: word; var ShiftState: TShiftState; var Consumed: boolean);
procedure FormShow(Sender: TObject);
procedure lbBookmarksDoubleClicked(Sender: TObject; AButton: TMouseButton; AShift: TShiftState; const AMousePos: TPoint);
procedure btnRenameClicked(Sender: TObject);
procedure btnDeleteClicked(Sender: TObject);
procedure btnGotoClicked(Sender: TObject);
procedure btnHelpClicked(Sender: TObject);
procedure btnCloseClicked(Sender: TObject);
function SelectedObject(ListBox: TfpgListBox): TObject;
procedure UpdateControls;
function GetSelectedBookmark: TBookmark;
procedure GotoSelectedBookmark;
public
procedure AfterCreate; override;
procedure RefreshList;
published
property BookmarkList: TList read FBookmarkList write FBookmarkList;
property OnBookmarksChanged: TNotifyEvent read FOnBookmarksChanged write FOnBookmarksChanged;
property OnGotoBookmark: TBookmarkCallback read FOnGotoBookmark write FOnGotoBookmark;
end;
{@VFD_NEWFORM_DECL}
implementation
uses
fpg_dialogs;
{@VFD_NEWFORM_IMPL}
procedure TBookmarksForm.lbBookmarksKeyPressed(Sender: TObject;
var KeyCode: word; var ShiftState: TShiftState; var Consumed: boolean);
begin
if (KeyCode = keyEnter) or (KeyCode = keyPEnter) then
begin
GotoSelectedBookmark;
Close;
end;
end;
procedure TBookmarksForm.FormShow(Sender: TObject);
begin
RefreshList;
lbBookmarks.SetFocus;
end;
procedure TBookmarksForm.lbBookmarksDoubleClicked(Sender: TObject;
AButton: TMouseButton; AShift: TShiftState; const AMousePos: TPoint);
begin
GotoSelectedBookmark;
Close;
end;
procedure TBookmarksForm.btnRenameClicked(Sender: TObject);
var
Bookmark: TBookmark;
lName: TfpgString;
begin
Bookmark := GetSelectedBookmark;
if Bookmark = nil then
exit;
lName := Bookmark.Name;
if fpgInputQuery( 'Rename Bookmark', 'Enter the new name of the bookmark', lName ) then
begin
Bookmark.Name := lName;
if Assigned(OnBookmarksChanged) then
OnBookmarksChanged(self);
// redisplay name in list
lbBookmarks.Items[lbBookmarks.FocusItem] := Bookmark.Name;
lbBookmarks.Invalidate;
end;
end;
procedure TBookmarksForm.btnDeleteClicked(Sender: TObject);
var
Bookmark: TBookmark;
BookmarkIndex: integer;
begin
Bookmark := GetSelectedBookmark;
if Bookmark = nil then
exit;
if TfpgMessageDialog.Question('Delete Bookmark',
Format('Delete the bookmark named "%s"?', [Bookmark.Name])) = mbYes then
begin
BookmarkIndex := BookmarkList.IndexOf( Bookmark );
lbBookmarks.Items.Delete( BookmarkIndex );
BookmarkList.Delete( BookmarkIndex );
if BookmarkIndex > BookmarkList.Count - 1 then
BookmarkIndex := BookmarkList.Count - 1;
lbBookmarks.FocusItem := BookmarkIndex;
Bookmark.Free;
if Assigned(OnBookmarksChanged) then
OnBookmarksChanged(self);
lbBookmarks.Invalidate;
UpdateControls;
end;
end;
procedure TBookmarksForm.btnGotoClicked(Sender: TObject);
begin
GotoSelectedBookmark;
end;
procedure TBookmarksForm.btnHelpClicked(Sender: TObject);
begin
InvokeHelp;
end;
procedure TBookmarksForm.btnCloseClicked(Sender: TObject);
begin
Close;
end;
function TBookmarksForm.SelectedObject(ListBox: TfpgListBox): TObject;
begin
if (ListBox.FocusItem >= 0) and (ListBox.FocusItem < ListBox.Items.Count) then
Result := ListBox.Items.Objects[ListBox.FocusItem]
else
Result := nil;
end;
procedure TBookmarksForm.UpdateControls;
var
Selected: Boolean;
begin
Selected := GetSelectedBookmark <> nil;
btnRename.Enabled := Selected;
btnDelete.Enabled := Selected;
btnGoto.Enabled := Selected;
if not btnGoto.Enabled then
btnGoto.Default := false;
end;
function TBookmarksForm.GetSelectedBookmark: TBookmark;
begin
if SelectedObject(lbBookmarks) = nil then
result := nil
else
result := SelectedObject(lbBookmarks) as TBookmark;
end;
procedure TBookmarksForm.GotoSelectedBookmark;
begin
if Assigned(FOnGotoBookmark) then
if GetSelectedBookmark <> nil then
FOnGotoBookmark(GetSelectedBookmark);
end;
procedure TBookmarksForm.AfterCreate;
begin
{%region 'Auto-generated GUI code' -fold}
{@VFD_BODY_BEGIN: BookmarksForm}
Name := 'BookmarksForm';
SetPosition(553, 246, 393, 247);
WindowTitle := 'Bookmarks';
Hint := '';
HelpType := htContext;
HelpContext := 8;
OnShow := @FormShow;
lbBookmarks := TfpgListBox.Create(self);
with lbBookmarks do
begin
Name := 'lbBookmarks';
SetPosition(8, 12, 272, 227);
Anchors := [anLeft,anRight,anTop,anBottom];
FontDesc := '#List';
Hint := '';
TabOrder := 1;
OnDoubleClick := @lbBookmarksDoubleClicked;
OnKeyPress := @lbBookmarksKeyPressed;
end;
btnRename := TfpgButton.Create(self);
with btnRename do
begin
Name := 'btnRename';
SetPosition(288, 16, 96, 23);
Anchors := [anRight,anTop];
Text := 'Rename...';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 2;
OnClick := @btnRenameClicked;
end;
btnDelete := TfpgButton.Create(self);
with btnDelete do
begin
Name := 'btnDelete';
SetPosition(288, 44, 96, 23);
Anchors := [anRight,anTop];
Text := 'Delete';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 3;
OnClick := @btnDeleteClicked;
end;
btnGoTo := TfpgButton.Create(self);
with btnGoTo do
begin
Name := 'btnGoTo';
SetPosition(288, 72, 96, 23);
Anchors := [anRight,anTop];
Text := 'Goto';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 4;
Default := True;
OnClick := @btnGotoClicked;
end;
btnHelp := TfpgButton.Create(self);
with btnHelp do
begin
Name := 'btnHelp';
SetPosition(288, 100, 96, 23);
Anchors := [anRight,anTop];
Text := 'Help';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 5;
OnClick := @btnHelpClicked;
end;
btnClose := TfpgButton.Create(self);
with btnClose do
begin
Name := 'btnClose';
SetPosition(288, 217, 96, 23);
Anchors := [anRight,anBottom];
Text := 'Close';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 6;
OnClick := @btnCloseClicked;
end;
{@VFD_BODY_END: BookmarksForm}
{%endregion}
end;
procedure TBookmarksForm.RefreshList;
var
i: integer;
Bookmark: TBookmark;
Begin
lbBookmarks.Items.BeginUpdate;
lbBookmarks.Items.Clear;
if not Assigned(BookmarkList) then
exit;
for i := 0 to BookmarkList.Count - 1 do
begin
Bookmark := TBookmark(BookmarkList[i]);
lbBookmarks.Items.AddObject(Bookmark.Name, Bookmark);
end;
if lbBookmarks.Items.Count > 0 then
lbBookmarks.FocusItem := 0;
lbBookmarks.Items.EndUpdate;
UpdateControls;
End;
end.
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