src/apps/mediaconverter/MediaFileListView.cpp

   1 // Copyright 1999, Be Incorporated. All Rights Reserved.
   2 // Copyright 2000-2004, Jun Suzuki. All Rights Reserved.
   3 // Copyright 2007, 2009 Stephan Aßmus. All Rights Reserved.
   4 // This file may be used under the terms of the Be Sample Code License.
   5
   6
   7 #include "MediaFileListView.h"
   8
   9 #include <new>
  10
  11 #include <Application.h>
  12 #include <MediaFile.h>
  13 #include <Messenger.h>
  14
  15 #include "MediaConverterWindow.h"
  16 #include "MessageConstants.h"
  17
  18
  19 // #pragma mark - MediaFileListItem
  20
  21
  22 MediaFileListItem::MediaFileListItem(BMediaFile* file, const entry_ref& ref)
  23         :
  24         BStringItem(ref.name),
  25         fRef(ref),
  26         fMediaFile(file)
  27 {
  28 }
  29
  30
  31 MediaFileListItem::~MediaFileListItem()
  32 {
  33         delete fMediaFile;
  34 }
  35
  36
  37 // #pragma mark - MediaFileListView
  38
  39
  40 MediaFileListView::MediaFileListView()
  41         :
  42         BListView("MediaFileListView", B_SINGLE_SELECTION_LIST, B_WILL_DRAW
  43                         | B_NAVIGABLE | B_FRAME_EVENTS)
  44 {
  45         fEnabled = true;
  46 }
  47
  48
  49 MediaFileListView::~MediaFileListView()
  50 {
  51         BListItem *item;
  52         while ((item = RemoveItem((int32)0)) != NULL) {
  53                 delete item;
  54         }
  55 }
  56
  57
  58 void
  59 MediaFileListView::SetEnabled(bool enabled)
  60 {
  61         if (enabled == fEnabled)
  62                 return;
  63
  64         fEnabled = enabled;
  65         // TODO: visual indication of enabled status?
  66 }
  67
  68
  69 bool
  70 MediaFileListView::IsEnabled() const
  71 {
  72         return fEnabled;
  73 }
  74
  75
  76 bool
  77 MediaFileListView::AddMediaItem(BMediaFile* file, const entry_ref& ref)
  78 {
  79         MediaFileListItem* item = new(std::nothrow) MediaFileListItem(file, ref);
  80         if (item == NULL || !AddItem(item)) {
  81                 delete item;
  82                 return false;
  83         }
  84         be_app_messenger.SendMessage(FILE_LIST_CHANGE_MESSAGE);
  85         return true;
  86 }
  87
  88
  89 void
  90 MediaFileListView::KeyDown(const char *bytes, int32 numBytes)
  91 {
  92         switch (bytes[0]) {
  93                 case B_DELETE:
  94                         if (IsEnabled()) {
  95                                 int32 selection = CurrentSelection();
  96                                 if (selection >= 0) {
  97                                         delete RemoveItem(selection);
  98                                         // select the previous item
  99                                         int32 count = CountItems();
 100                                         if (selection >= count)
 101                                                 selection = count - 1;
 102                                         Select(selection);
 103                                         be_app_messenger.SendMessage(FILE_LIST_CHANGE_MESSAGE);
 104                                 }
 105                         }
 106                         break;
 107                 default:
 108                         BListView::KeyDown(bytes, numBytes);
 109         }
 110 }
 111
 112
 113 void
 114 MediaFileListView::SelectionChanged()
 115 {
 116         MediaConverterWindow* win = dynamic_cast<MediaConverterWindow*>(Window());
 117         if (win != NULL)
 118                 win->SourceFileSelectionChanged();
 119 }
 120