snakinglistview.cpp

UIQ symbian平台

/*****************************************************************************

 COPYRIGHT All rights reserved Sony Ericsson Mobile Communications AB 2005.



 The software is the copyrighted work of Sony Ericsson Mobile Communications AB.

 The use of the software is subject to the terms of the end-user license

 agreement which accompanies or is included with the software. The software is

 provided "as is" and Sony Ericsson specifically disclaim any warranty or

 condition whatsoever regarding merchantability or fitness for a specific

 purpose, title or non-infringement. No warranty of any kind is made in

 relation to the condition, suitability, availability, accuracy, reliability,

 merchantability and/or non-infringement of the software provided herein.



 *****************************************************************************/

// SnakingListViews.cpp
//
//

#include "ListViews.h"
#include "ListViews_Application.h"  // KUidListViews
#include "SnakingListView.h"

#include <eiktxlbm.h>
#include <eikclbd.h>
#include <quartzkeys.h>             // EQuartzKeyXxx
#include <eikmenub.h>               // CEikMenuBar
#include <w32std.h>                 // RWindow
#include <gulicon.h>                // CGulIcon


CSnakingListView* CSnakingListView::NewL(const TRect& aRect)
  {
  CSnakingListView * self = new(ELeave) CSnakingListView;
  CleanupStack::PushL(self);
  self->ConstructL(aRect);
  CleanupStack::Pop();
  return self;
  }
  
CSnakingListView::~CSnakingListView()
  {
  delete iTextListEmpty;
  if(iListBox)
    delete iListBox;
  }

void CSnakingListView::ConstructL(const TRect& aRect)
  {
  iListBox = 0;
  iDisplayList = EFalse;

  iViewId.iViewUid = TUid::Uid(EListViewsCmdSnakingListView);
  iViewId.iAppUid = KUidListViews;

  CreateWindowL();
  SetRect(aRect);

    // initiate iTextListEmpty - Fetch the text from the resource file.
  iTextListEmpty = iEikonEnv->AllocReadResourceL(R_LISTVIEWS_LIST_EMPTY);

  CreateList(EListViewsCmdColumnOpt1);

    // Get the array of text items held by the list box's model
  CDesCArray* array = ((CDesCArray *)iListBox->Model()->ItemTextArray());
    // populate it with text items - contacts names
  PopulateList(array);

    // Handle the addition of items to the list box model. 
  iListBox->HandleItemAdditionL(); // This also redraws the list box.

    // Set the item at index 0
  iListBox->SetCurrentItemIndex(0);

  // Set the list box control with a focus - this gives the blue highlighting
  // effect shown in the pictures above.
  iListBox->SetFocus(ETrue);

  iListBox->ActivateL();
  }

TKeyResponse CSnakingListView::OfferKeyEventL(const TKeyEvent& aKeyEvent,
                                              TEventCode aType)
  {
  if (aType == EEventKey)
    {
    if (aKeyEvent.iCode == EQuartzKeyTwoWayDown)
      {
      iListBox->View()->MoveCursorL( CListBoxView::ECursorNextItem,
                                     CListBoxView::ENoSelection);
      iListBox->UpdateScrollBarsL();
      return EKeyWasConsumed;
      }
    else if (aKeyEvent.iCode == EQuartzKeyTwoWayUp)
      {
      iListBox->View()->MoveCursorL( CListBoxView::ECursorPreviousItem,
                                     CListBoxView::ENoSelection );
      iListBox->UpdateScrollBarsL();
      return EKeyWasConsumed;
      }
    }
  return iListBox->OfferKeyEventL(aKeyEvent, aType);
  }

void CSnakingListView::HandlePointerEventL(const TPointerEvent& aPointerEvent)
  {
  if (aPointerEvent.iType == TPointerEvent::EButton1Down)
    {
    TPoint penXY = aPointerEvent.iPosition;
    int yMod = (int)( ((penXY.iY-6) / iListBox->ItemHeight()) +
                      iListBox->View()->TopItemIndex() );
    if (yMod < 0)
      yMod = 0;
    if ((yMod <= iListBox->View()->BottomItemIndex()) && (yMod < 236))
      {
      iListBox->View()->VerticalMoveToItemL(yMod,
                                            CListBoxView::EDisjointSelection);
      iListBox->UpdateScrollBarsL();
      }
    }
  }

void CSnakingListView::HandleCommandL(TInt aCommand)
  {
  delete iListBox;

  CreateList(aCommand);

    // Get the array of text items held by the list box's model
  CDesCArray* array = ((CDesCArray *)iListBox->Model()->ItemTextArray());
    // populate it with text items - contacts names
  PopulateList(array);

    // Handle the addition of items to the list box model. 
  iListBox->HandleItemAdditionL(); // This also redraws the list box.
  
    // Set the item at index 0
  iListBox->SetCurrentItemIndex(0);

  // Set the list box control with a focus - this gives the blue highlighting
  // effect shown in the pictures above.
  iListBox->SetFocus(ETrue);

  iListBox->ActivateL();
  iListBox->DrawNow();
  }

TVwsViewId CSnakingListView::ViewId() const
  {
  return iViewId;
  }

void CSnakingListView::Draw(const TRect& /*aRect*/) const
  {
    // Window graphics context
  CWindowGc& gc = SystemGc();
    // Start with a clear screen
  gc.Clear();
  TRect rect = Rect();

  const CFont* font = iEikonEnv->TitleFont();
  gc.UseFont(font);
  TInt baseline = rect.Height()/2 - font->AscentInPixels()/2;
  gc.DrawText(*iTextListEmpty, rect, baseline, CGraphicsContext::ECenter);
  gc.DiscardFont();
  }

TInt CSnakingListView::CountComponentControls() const
  {
  if(iListBox && iDisplayList)
    return 1;
  else
    return 0;
  }

CCoeControl* CSnakingListView::ComponentControl(TInt aIndex) const
  {
  switch (aIndex)
    {
    case 0:
      return iListBox;
    default:
        return 0;
    }
  }

void CSnakingListView::ViewActivatedL( const TVwsViewId& /*aPrevViewId*/,
                                      TUid /*aCustomMessageId*/,
                                      const TDesC8& /*aCustomMessage*/ )
  {
  ActivateL();

  MEikAppUiFactory* factory = iEikonEnv->AppUiFactory();
  factory->MenuBar()->ChangeMenuBarL(0,
                                     R_LISTVIEWS_MENUBAR_SNAKING_LISTBOX,
                                     EFalse);
  MakeVisible(ETrue);
  }

void CSnakingListView::ViewDeactivated()
  {
  MakeVisible(EFalse);
  }

void CSnakingListView::CreateList(TInt aFlag)
  {
  // Construct a list box
  iListBox = new (ELeave) CEikSnakingTextListBox;
  // flag can be different
  switch(aFlag)
    {
    case EListViewsCmdColumnOpt1 :
      iListBox->ConstructL(this, 0);
      break;

    case EListViewsCmdColumnOpt2 :
      iListBox->ConstructL(this, CEikListBox::EMultipleSelection);
      break;
    }
  // set this view as the parent of the control
  iListBox->SetContainerWindowL( *this );

  // set look and behaviour:
  // column can not be greater than avilable screen area
  iListBox->SetColumnWidth(Rect().Width()-30);

  // - set scrolling capabilities
  iListBox->CreateScrollBarFrameL();
  iListBox->ScrollBarFrame()->SetScrollBarVisibilityL(CEikScrollBarFrame::EAuto,
                                                      CEikScrollBarFrame::EAuto);
  // - set listbox bordes
  iListBox->SetBorder(TGulBorder::EDeepRaisedWithOutline); 

  // - set position
  TPoint p;
  TSize sz;
  p.iX = 0;
  p.iY = 0;
  sz.iWidth = 208;
  sz.iHeight = 240; // max 255
  iListBox->SetExtent(p, sz);
  }

// this function fills list with all contact names, sorted alphabetically
void CSnakingListView::PopulateList(CDesCArray *aArray)
  {
  // put names into array
  aArray->AppendL(_L("Jenny Annie"));
  aArray->AppendL(_L("Chris Stoll"));
  aArray->AppendL(_L("David Mine"));
  aArray->AppendL(_L("Johnny Longname"));
  aArray->AppendL(_L("Mike Henry"));
  aArray->AppendL(_L("Susan"));
  aArray->AppendL(_L("Gooch"));
  aArray->AppendL(_L("Steve"));
  aArray->AppendL(_L("Paul Hasverylongnameman"));
  aArray->AppendL(_L("Cindy Crawford"));
  aArray->AppendL(_L("Greg O'Hara"));
  aArray->AppendL(_L("Erik Rednose"));
  aArray->AppendL(_L("Kenny"));
  aArray->AppendL(_L("Kyle"));
  aArray->AppendL(_L("Bennet Mill"));
  aArray->AppendL(_L("Justin"));
  aArray->AppendL(_L("Ridiculously long test name used to see if my code works."));

  iDisplayList = ETrue;
  }