//////////////////////////////////////////////////////////////////////
//                                                                  //
// observerWatchList.pas: Watch list observer                       //
//                                                                  //
// The contents of this file are subject to the Bottled Light       //
// Public License Version 1.0 (the "License"); you may not use this //
// file except in compliance with the License. You may obtain a     //
// copy of the License at http://www.bottledlight.com/BLPL/         //
//                                                                  //
// Software distributed under the License is distributed on an      //
// "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or   //
// implied. See the License for the specific language governing     //
// rights and limitations under the License.                        //
//                                                                  //
// The Original Code is the Mappy VM User Interface, released       //
// April 1st, 2003. The Initial Developer of the Original Code is   //
// Bottled Light, Inc. Portions created by Bottled Light, Inc. are  //
// Copyright (C) 2001-2003 Bottled Light, Inc. All Rights Reserved. //
//                                                                  //
// Author(s):                                                       //
//   Michael Noland (joat), michael@bottledlight.com                //
//                                                                  //
// Changelog:                                                       //
//   1.0: First public release (April 1st, 2003)                    //
//                                                                  //
// Notes:                                                           //
//   None at present.                                               //
//                                                                  //
//////////////////////////////////////////////////////////////////////

//////////////////////////////////////////////////////////////////////
unit observerWatchList; //////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////

//////////////////////////////////////////////////////////////////////
interface ////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
  Dialogs, Menus, ComCtrls, cpuObservers, nexus;

//////////////////////////////////////////////////////////////////////

type
  TdbgWatchList = class(TCpuObserver)
    contextMenu: TPopupMenu;
    mEditWatch: TMenuItem;
    mAddWatch: TMenuItem;
    N1: TMenuItem;
    mEnabled: TMenuItem;
    mDeleteWatch: TMenuItem;
    N2: TMenuItem;
    mEnableAllWatches: TMenuItem;
    mDisableAllWatches: TMenuItem;
    mDeleteAllWatches: TMenuItem;
    list: TListView;
    procedure ToggleEnabled(Sender: TObject);
    procedure EditWatch(Sender: TObject);
    procedure AddAWatch(Sender: TObject);
    procedure DeleteAWatch(Sender: TObject);
    procedure EnableAllWatches(Sender: TObject);
    procedure DisableAllWatches(Sender: TObject);
    procedure DeleteAllWatches(Sender: TObject);
    procedure contextMenuPopup(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure listAdvancedCustomDrawItem(Sender: TCustomListView;
      Item: TListItem; State: TCustomDrawState; Stage: TCustomDrawStage;
      var DefaultDraw: Boolean);
  public
    procedure UpdateObserver; override;
    class function OCaption: string; override;
  end;

//////////////////////////////////////////////////////////////////////

var
  dbgWatchList: TdbgWatchList;

//////////////////////////////////////////////////////////////////////
implementation ///////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////

uses
  dbgWatches, debugWatchProperties;

//////////////////////////////////////////////////////////////////////

{$R *.DFM}

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.UpdateObserver;
var
  i: integer;
  item: TListItem;
  watch: TWatch;
begin
  list.Items.Clear;
  for i := 0 to watches.Count - 1 do begin
    watch := watches.Items[i] as TWatch;

    // Add the breakpoint info to the list
    item := list.Items.Add;
    item.Data := watch;
//    item.Checked := watch.enabled;
    item.Caption := watch.expression;
    item.SubItems.Add(watch.Evaluate);
  end;
end;

//////////////////////////////////////////////////////////////////////

class function TdbgWatchList.OCaption: string;
begin
  Result := 'Watches';
end;

//////////////////////////////////////////////////////////////////////
// Context Menu //////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.contextMenuPopup(Sender: TObject);
var
  itemSelected: boolean;
begin
  itemSelected := list.Selected <> nil;
  mEnabled.visible := itemSelected;
  mEditWatch.visible := itemSelected;
  N1.visible := itemSelected;
  mDeleteWatch.visible := itemSelected;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.ToggleEnabled(Sender: TObject);
begin
  if list.Selected <> nil then begin
    TWatch(list.Selected.data).enabled := not TWatch(list.Selected.data).enabled;
    UpdateObservers;
  end;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.EditWatch(Sender: TObject);
var
  watchProperties: TdbgWatchProperties;
begin
  if list.Selected <> nil then begin
    Application.CreateForm(TdbgWatchProperties, watchProperties);
    watchProperties.watch := TWatch(list.Selected.data);
    watchProperties.Show;
    UpdateObservers;
  end;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.AddAWatch(Sender: TObject);
var
  watchProperties: TdbgWatchProperties;
begin
  Application.CreateForm(TdbgWatchProperties, watchProperties);
  watchProperties.watch := TWatch.Create;
  AddWatch(watchProperties.watch);
  watchProperties.Show;
  UpdateObservers;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.DeleteAWatch(Sender: TObject);
begin
  if list.Selected <> nil then begin
    RemoveWatch(TWatch(list.Selected.data));
    list.Items.Delete(list.Items.IndexOf(list.Selected));
    UpdateObservers;
  end;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.EnableAllWatches(Sender: TObject);
var
  i: integer;
begin
  for i := 0 to watches.Count - 1 do
    TWatch(watches.items[i]).enabled := true;
  UpdateObservers;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.DisableAllWatches(Sender: TObject);
var
  i: integer;
begin
  for i := 0 to watches.Count - 1 do
    TWatch(watches.items[i]).enabled := false;
  UpdateObservers;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.DeleteAllWatches(Sender: TObject);
begin
  ClearWatches;
  UpdateObservers;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.FormCreate(Sender: TObject);
begin
  HelpContext := LinkHelp('watches.html');
  list.DoubleBuffered := true;
end;

//////////////////////////////////////////////////////////////////////

procedure TdbgWatchList.listAdvancedCustomDrawItem(Sender: TCustomListView; Item: TListItem; State: TCustomDrawState; Stage: TCustomDrawStage; var DefaultDraw: Boolean);
begin
  DefaultDraw := true;
  if TWatch(item.Data).enabled then
    list.Font.Color := clBtnText
  else
    list.Font.Color := clGrayText;
end;

//////////////////////////////////////////////////////////////////////

initialization
  RegisterViewer(TdbgWatchList);
end.

//////////////////////////////////////////////////////////////////////