x2cl/Packages/X2CLMenuBarEditor.pas

678 lines
16 KiB
ObjectPascal

unit X2CLMenuBarEditor;
interface
uses
ActnList,
Classes,
ComCtrls,
Controls,
DesignIntf,
DesignWindows,
Forms,
ImgList,
ToolWin,
X2CLMenuBar;
type
TfrmMenuBarEditor = class(TDesignWindow, IX2MenuBarDesigner)
actAddGroup: TAction;
actAddItem: TAction;
actDelete: TAction;
actMoveDown: TAction;
actMoveUp: TAction;
alMenu: TActionList;
ilsActions: TImageList;
sbStatus: TStatusBar;
tbAddGroup: TToolButton;
tbAddItem: TToolButton;
tbDelete: TToolButton;
tbMenu: TToolBar;
tbMoveDown: TToolButton;
tbMoveUp: TToolButton;
tbSep1: TToolButton;
tvMenu: TTreeView;
procedure actDeleteExecute(Sender: TObject);
procedure actAddItemExecute(Sender: TObject);
procedure actAddGroupExecute(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure FormDestroy(Sender: TObject);
procedure tvMenuChange(Sender: TObject; Node: TTreeNode);
procedure FormActivate(Sender: TObject);
procedure actMoveUpExecute(Sender: TObject);
procedure actMoveDownExecute(Sender: TObject);
procedure tvMenuKeyPress(Sender: TObject; var Key: Char);
private
FMenuBar: TX2CustomMenuBar;
FDesignerAttached: Boolean;
FMoving: Boolean;
procedure SetMenuBar(const Value: TX2CustomMenuBar);
procedure AttachDesigner();
procedure DetachDesigner();
function GetSelectedItem(): TX2CustomMenuBarItem;
function GetItemNode(AItem: TX2CustomMenuBarItem): TTreeNode;
procedure MoveSelectedItem(ADown: Boolean);
protected
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
procedure ItemAdded(AItem: TX2CustomMenuBarItem);
procedure ItemModified(AItem: TX2CustomMenuBarItem);
procedure ItemDeleting(AItem: TX2CustomMenuBarItem);
protected
procedure RefreshMenu();
function AddGroup(AGroup: TX2MenuBarGroup): TTreeNode;
function AddItem(ANode: TTreeNode; AItem: TX2MenuBarItem): TTreeNode;
procedure UpdateNode(ANode: TTreeNode);
procedure UpdateUI();
procedure Modified();
property MenuBar: TX2CustomMenuBar read FMenuBar write SetMenuBar;
public
class procedure Execute(AMenuBar: TX2CustomMenuBar; ADesigner: IDesigner);
end;
implementation
uses
Contnrs,
SysUtils, Dialogs;
var
GEditors: TObjectBucketList;
{$R *.dfm}
{ TfrmMenuBarEditor }
class procedure TfrmMenuBarEditor.Execute(AMenuBar: TX2CustomMenuBar; ADesigner: IDesigner);
var
editorForm: TfrmMenuBarEditor;
begin
if not Assigned(GEditors) then
GEditors := TObjectBucketList.Create();
editorForm := nil;
if GEditors.Exists(AMenuBar) then
editorForm := TfrmMenuBarEditor(GEditors.Data[AMenuBar]);
if not Assigned(editorForm) then
begin
editorForm := TfrmMenuBarEditor.Create(Application);
editorForm.MenuBar := AMenuBar;
editorForm.Designer := ADesigner;
GEditors.Add(AMenuBar, editorForm);
end;
editorForm.Show();
end;
procedure TfrmMenuBarEditor.FormCreate(Sender: TObject);
begin
{$IF CompilerVersion >= 18}
// Delphi (BDS) 2006
tbMenu.EdgeBorders := [];
tbMenu.DrawingStyle := dsGradient;
{$ELSE}
tbMenu.Flat := True;
{$IFEND}
end;
procedure TfrmMenuBarEditor.FormActivate(Sender: TObject);
var
item: TX2CustomMenuBarItem;
begin
if Assigned(tvMenu.Selected) then
begin
item := TX2CustomMenuBarItem(tvMenu.Selected.Data);
if Assigned(Designer) then
Designer.SelectComponent(item);
end;
UpdateUI();
end;
procedure TfrmMenuBarEditor.FormClose(Sender: TObject; var Action: TCloseAction);
begin
if Assigned(Designer) and Assigned(MenuBar) then
Designer.SelectComponent(MenuBar);
Action := caFree;
end;
procedure TfrmMenuBarEditor.FormDestroy(Sender: TObject);
begin
if Assigned(MenuBar) then
begin
DetachDesigner();
if GEditors.Exists(MenuBar) then
GEditors.Remove(MenuBar);
end;
end;
procedure TfrmMenuBarEditor.tvMenuChange(Sender: TObject; Node: TTreeNode);
var
item: TX2CustomMenuBarItem;
begin
if Assigned(Node) then
begin
item := TX2CustomMenuBarItem(Node.Data);
if Assigned(Designer) then
Designer.SelectComponent(item);
end;
UpdateUI();
end;
procedure TfrmMenuBarEditor.tvMenuKeyPress(Sender: TObject; var Key: Char);
begin
ActivateInspector(Key);
end;
procedure TfrmMenuBarEditor.RefreshMenu();
var
groupIndex: Integer;
begin
tvMenu.Items.BeginUpdate();
try
tvMenu.Items.Clear();
if Assigned(MenuBar) then
for groupIndex := 0 to Pred(MenuBar.Groups.Count) do
AddGroup(MenuBar.Groups[groupIndex]);
finally
tvMenu.Items.EndUpdate();
UpdateUI();
end;
end;
procedure TfrmMenuBarEditor.actAddGroupExecute(Sender: TObject);
begin
MenuBar.Groups.Add();
Modified();
end;
procedure TfrmMenuBarEditor.actAddItemExecute(Sender: TObject);
var
menuItem: TX2CustomMenuBarItem;
group: TX2MenuBarGroup;
begin
menuItem := GetSelectedItem();
if Assigned(menuItem) then
begin
group := nil;
if menuItem is TX2MenuBarGroup then
group := TX2MenuBarGroup(menuItem)
else if menuItem is TX2MenuBarItem then
group := TX2MenuBarItem(menuItem).Group;
if Assigned(group) then
begin
group.Items.Add();
if group.Items.Count = 1 then
group.Expanded := True;
Modified();
end;
end;
end;
procedure TfrmMenuBarEditor.actDeleteExecute(Sender: TObject);
var
menuItem: TX2CustomMenuBarItem;
begin
menuItem := GetSelectedItem();
if Assigned(menuItem) and Assigned(menuItem.Collection) then
begin
menuItem.Collection.Delete(menuItem.Index);
Modified();
end;
end;
procedure TfrmMenuBarEditor.actMoveUpExecute(Sender: TObject);
begin
MoveSelectedItem(False);
end;
procedure TfrmMenuBarEditor.actMoveDownExecute(Sender: TObject);
begin
MoveSelectedItem(True);
end;
function TfrmMenuBarEditor.AddGroup(AGroup: TX2MenuBarGroup): TTreeNode;
var
itemIndex: Integer;
siblingGroup: TX2MenuBarGroup;
siblingNode: TTreeNode;
groupNode: TTreeNode;
begin
tvMenu.Items.BeginUpdate();
try
siblingGroup := nil;
siblingNode := nil;
{ Make sure the group is inserted in the correct position by searching
for it's sibling group. Note: do NOT use Items[x] in a loop; TTreeView
emulates this by using GetFirst/GetNext. }
if AGroup.Index < Pred(AGroup.Collection.Count) then
siblingGroup := TX2MenuBarGroup(AGroup.Collection.Items[Succ(AGroup.Index)]);
if Assigned(siblingGroup) then
begin
siblingNode := tvMenu.Items.GetFirstNode();
while Assigned(siblingNode) do
begin
if siblingNode.Data = siblingGroup then
break;
siblingNode := siblingNode.GetNextSibling();
end;
end;
if Assigned(siblingNode) then
groupNode := tvMenu.Items.AddNode(nil, siblingNode, '', nil, naInsert)
else
groupNode := tvMenu.Items.Add(nil, '');
groupNode.Data := AGroup;
UpdateNode(groupNode);
{ Add items }
for itemIndex := 0 to Pred(AGroup.Items.Count) do
AddItem(groupNode, AGroup.Items[itemIndex]);
groupNode.Expand(False);
Result := groupNode;
finally
tvMenu.Items.EndUpdate();
end;
end;
function TfrmMenuBarEditor.AddItem(ANode: TTreeNode; AItem: TX2MenuBarItem): TTreeNode;
var
siblingItem: TX2MenuBarItem;
siblingNode: TTreeNode;
itemNode: TTreeNode;
begin
tvMenu.Items.BeginUpdate();
try
siblingItem := nil;
siblingNode := nil;
{ See AddGroup }
if AItem.Index < Pred(AItem.Collection.Count) then
siblingItem := TX2MenuBarItem(AItem.Collection.Items[Succ(AItem.Index)]);
if Assigned(siblingItem) then
begin
siblingNode := ANode.GetFirstChild();
while Assigned(siblingNode) do
begin
if siblingNode.Data = siblingItem then
break;
siblingNode := siblingNode.GetNextSibling();
end;
end;
if Assigned(siblingNode) then
itemNode := tvMenu.Items.AddNode(nil, siblingNode, '', nil, naInsert)
else
itemNode := tvMenu.Items.AddChild(ANode, '');
itemNode.Data := AItem;
UpdateNode(itemNode);
Result := itemNode;
finally
tvMenu.Items.EndUpdate();
end;
end;
procedure TfrmMenuBarEditor.UpdateNode(ANode: TTreeNode);
var
menuItem: TX2CustomMenuBarItem;
begin
menuItem := TX2CustomMenuBarItem(ANode.Data);
ANode.Text := menuItem.Caption;
ANode.ImageIndex := menuItem.ImageIndex;
ANode.SelectedIndex := ANode.ImageIndex;
end;
procedure TfrmMenuBarEditor.UpdateUI();
var
canMoveDown: Boolean;
canMoveUp: Boolean;
itemSelected: Boolean;
menuItem: TX2CustomMenuBarItem;
group: TX2MenuBarGroup;
begin
itemSelected := Assigned(tvMenu.Selected);
actAddGroup.Enabled := Assigned(MenuBar);
actAddItem.Enabled := itemSelected;
actDelete.Enabled := itemSelected;
canMoveUp := False;
canMoveDown := False;
if itemSelected then
begin
menuItem := GetSelectedItem();
if Assigned(menuItem.Collection) then
begin
canMoveUp := (menuItem.Index > 0);
canMoveDown := (menuItem.Index < Pred(menuItem.Collection.Count));
if menuItem is TX2MenuBarItem then
begin
group := TX2MenuBarItem(menuItem).Group;
if Assigned(group) then
begin
canMoveUp := canMoveUp or (group.Index > 0);
canMoveDown := canMoveDown or (group.Index < Pred(MenuBar.Groups.Count));
end;
end;
end;
end;
actMoveUp.Enabled := canMoveUp;
actMoveDown.Enabled := canMoveDown;
end;
procedure TfrmMenuBarEditor.Modified();
begin
if Assigned(Designer) then
Designer.Modified();
UpdateUI();
end;
procedure TfrmMenuBarEditor.Notification(AComponent: TComponent; Operation: TOperation);
begin
if (Operation = opRemove) and (AComponent = MenuBar) then
begin
DetachDesigner();
Release();
end;
inherited;
end;
procedure TfrmMenuBarEditor.ItemAdded(AItem: TX2CustomMenuBarItem);
var
group: TX2MenuBarGroup;
groupNode: TTreeNode;
treeNode: TTreeNode;
begin
if FMoving then
Exit;
treeNode := nil;
if AItem is TX2MenuBarGroup then
treeNode := AddGroup(TX2MenuBarGroup(AItem))
else if AItem is TX2MenuBarItem then
begin
group := TX2MenuBarItem(AItem).Group;
groupNode := nil;
if Assigned(group) then
groupNode := GetItemNode(group);
if Assigned(groupNode) then
treeNode := AddItem(groupNode, TX2MenuBarItem(AItem));
end;
if Assigned(treeNode) then
tvMenu.Selected := treeNode;
end;
procedure TfrmMenuBarEditor.ItemModified(AItem: TX2CustomMenuBarItem);
var
treeNode: TTreeNode;
begin
if FMoving then
Exit;
tvMenu.Items.BeginUpdate();
try
treeNode := tvMenu.Items.GetFirstNode();
while Assigned(treeNode) do
begin
UpdateNode(treeNode);
treeNode := treeNode.GetNext();
end;
finally
tvMenu.Items.EndUpdate();
end;
end;
procedure TfrmMenuBarEditor.ItemDeleting(AItem: TX2CustomMenuBarItem);
var
treeNode: TTreeNode;
begin
if FMoving then
Exit;
treeNode := GetItemNode(AItem);
if Assigned(treeNode) then
tvMenu.Items.Delete(treeNode);
end;
procedure TfrmMenuBarEditor.AttachDesigner();
begin
if FDesignerAttached or (not Assigned(MenuBar)) then
exit;
MenuBar.Designer := Self;
FDesignerAttached := True;
end;
procedure TfrmMenuBarEditor.DetachDesigner();
begin
if not FDesignerAttached then
exit;
FDesignerAttached := False;
if Assigned(MenuBar) then
MenuBar.Designer := nil;
end;
procedure TfrmMenuBarEditor.MoveSelectedItem(ADown: Boolean);
var
selectedItem: TX2CustomMenuBarItem;
group: TX2MenuBarGroup;
refresh: Boolean;
begin
if not Assigned(MenuBar) then
Exit;
selectedItem := GetSelectedItem();
if not Assigned(selectedItem) then
Exit;
refresh := False;
group := nil;
if selectedItem is TX2MenuBarItem then
group := TX2MenuBarItem(selectedItem).Group;
FMoving := True;
try
if ADown then
begin
if selectedItem.Index < Pred(selectedItem.Collection.Count) then
begin
selectedItem.Index := Succ(selectedItem.Index);
refresh := True;
end else if Assigned(group) then
begin
{ Move down to another group
The AddItem is triggered by moving between groups, no need
to add here. }
if group.Index < Pred(MenuBar.Groups.Count) then
begin
selectedItem.Collection := MenuBar.Groups[Succ(group.Index)].Items;
selectedItem.Index := 0;
refresh := True;
end;
end;
end else
begin
if selectedItem.Index > 0 then
begin
selectedItem.Index := Pred(selectedItem.Index);
refresh := True;
end else if Assigned(group) then
begin
{ Move up to another group }
if group.Index > 0 then
begin
selectedItem.Collection := MenuBar.Groups[Pred(group.Index)].Items;
refresh := True;
end;
end;
end;
finally
FMoving := False;
if refresh then
begin
ItemDeleting(selectedItem);
ItemAdded(selectedItem);
end;
end;
end;
function TfrmMenuBarEditor.GetSelectedItem(): TX2CustomMenuBarItem;
begin
Result := nil;
if Assigned(tvMenu.Selected) then
Result := TX2CustomMenuBarItem(tvMenu.Selected.Data);
end;
function TfrmMenuBarEditor.GetItemNode(AItem: TX2CustomMenuBarItem): TTreeNode;
var
treeNode: TTreeNode;
begin
Result := nil;
treeNode := tvMenu.Items.GetFirstNode();
while Assigned(treeNode) do
begin
if treeNode.Data = AItem then
begin
Result := treeNode;
break;
end;
treeNode := treeNode.GetNext();
end;
end;
procedure TfrmMenuBarEditor.SetMenuBar(const Value: TX2CustomMenuBar);
begin
if Value <> FMenuBar then
begin
if Assigned(FMenuBar) then
begin
DetachDesigner();
FMenuBar.RemoveFreeNotification(Self);
end;
FMenuBar := Value;
if Assigned(FMenuBar) then
begin
tvMenu.Images := FMenuBar.Images;
Self.Caption := 'Editing ' + FMenuBar.Name;
AttachDesigner();
FMenuBar.FreeNotification(Self);
end else
begin
Self.Caption := '';
tvMenu.Images := nil;
end;
RefreshMenu();
end;
end;
procedure FreeEditor(AInfo, AItem, AData: Pointer; out AContinue: Boolean);
begin
with (TObject(AData) as TfrmMenuBarEditor) do
begin
MenuBar := nil;
Free();
end;
end;
initialization
finalization
if Assigned(GEditors) then
GEditors.ForEach(FreeEditor);
FreeAndNil(GEditors);
end.