src/kits/interface/ListItem.cpp

   1 /*
   2  * Copyright 2001-2010 Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Ulrich Wimboeck
   7  *              Marc Flerackers (mflerackers@androme.be)
   8  *              Rene Gollent
   9  */
  10
  11
  12 #include <ListItem.h>
  13
  14 #include <Message.h>
  15 #include <View.h>
  16
  17
  18 BListItem::BListItem(uint32 level, bool expanded)
  19         :
  20         fTop(0.0),
  21         fTemporaryList(0),
  22         fWidth(0),
  23         fHeight(0),
  24         fLevel(level),
  25         fSelected(false),
  26         fEnabled(true),
  27         fExpanded(expanded),
  28         fHasSubitems(false),
  29         fVisible(true)
  30 {
  31 }
  32
  33
  34 BListItem::BListItem(BMessage* data)
  35         :
  36         BArchivable(data),
  37         fTop(0.0),
  38         fWidth(0),
  39         fHeight(0),
  40         fLevel(0),
  41         fSelected(false),
  42         fEnabled(true),
  43         fExpanded(false),
  44         fHasSubitems(false),
  45         fVisible(true)
  46 {
  47         data->FindBool("_sel", &fSelected);
  48
  49         if (data->FindBool("_disable", &fEnabled) != B_OK)
  50                 fEnabled = true;
  51         else
  52                 fEnabled = false;
  53
  54         data->FindBool("_li_expanded", &fExpanded);
  55         data->FindInt32("_li_outline_level", (int32*)&fLevel);
  56 }
  57
  58
  59 BListItem::~BListItem()
  60 {
  61 }
  62
  63
  64 status_t
  65 BListItem::Archive(BMessage* archive, bool deep) const
  66 {
  67         status_t status = BArchivable::Archive(archive, deep);
  68         if (status == B_OK && fSelected)
  69                 status = archive->AddBool("_sel", true);
  70
  71         if (status == B_OK && !fEnabled)
  72                 status = archive->AddBool("_disable", true);
  73
  74         if (status == B_OK && fExpanded)
  75                 status = archive->AddBool("_li_expanded", true);
  76
  77         if (status == B_OK && fLevel != 0)
  78                 status = archive->AddInt32("_li_outline_level", fLevel);
  79
  80         return status;
  81 }
  82
  83
  84 float
  85 BListItem::Height() const
  86 {
  87         return fHeight;
  88 }
  89
  90
  91 float
  92 BListItem::Width() const
  93 {
  94         return fWidth;
  95 }
  96
  97
  98 bool
  99 BListItem::IsSelected() const
 100 {
 101         return fSelected;
 102 }
 103
 104
 105 void
 106 BListItem::Select()
 107 {
 108         fSelected = true;
 109 }
 110
 111
 112 void
 113 BListItem::Deselect()
 114 {
 115         fSelected = false;
 116 }
 117
 118
 119 void
 120 BListItem::SetEnabled(bool on)
 121 {
 122         fEnabled = on;
 123 }
 124
 125
 126 bool
 127 BListItem::IsEnabled() const
 128 {
 129         return fEnabled;
 130 }
 131
 132
 133 void
 134 BListItem::SetHeight(float height)
 135 {
 136         fHeight = height;
 137 }
 138
 139
 140 void
 141 BListItem::SetWidth(float width)
 142 {
 143         fWidth = width;
 144 }
 145
 146
 147 void
 148 BListItem::Update(BView* owner, const BFont* font)
 149 {
 150         font_height fh;
 151         font->GetHeight(&fh);
 152
 153         SetWidth(owner->Bounds().Width());
 154         SetHeight(ceilf(fh.ascent + fh.descent + fh.leading));
 155 }
 156
 157
 158 status_t
 159 BListItem::Perform(perform_code d, void* arg)
 160 {
 161         return BArchivable::Perform(d, arg);
 162 }
 163
 164
 165 void
 166 BListItem::SetExpanded(bool expanded)
 167 {
 168         fExpanded = expanded;
 169 }
 170
 171
 172 bool
 173 BListItem::IsExpanded() const
 174 {
 175         return fExpanded;
 176 }
 177
 178
 179 uint32
 180 BListItem::OutlineLevel() const
 181 {
 182         return fLevel;
 183 }
 184
 185
 186 void
 187 BListItem::SetOutlineLevel(uint32 level)
 188 {
 189         fLevel = level;
 190 }
 191
 192
 193 bool
 194 BListItem::HasSubitems() const
 195 {
 196         return fHasSubitems;
 197 }
 198
 199
 200 void BListItem::_ReservedListItem1() {}
 201 void BListItem::_ReservedListItem2() {}
 202
 203
 204 bool
 205 BListItem::IsItemVisible() const
 206 {
 207         return fVisible;
 208 }
 209
 210
 211 void
 212 BListItem::SetTop(float top)
 213 {
 214         fTop = top;
 215 }
 216
 217
 218 void
 219 BListItem::SetItemVisible(bool visible)
 220 {
 221         fVisible = visible;
 222 }