fpicker/source/office/breadcrumb.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <tools/urlobj.hxx>
  11 #include <vcl/svapp.hxx>
  12 #include "breadcrumb.hxx"
  13
  14 Breadcrumb::Breadcrumb(weld::Container* pParent)
  15     : m_pParent(pParent)
  16     , m_nMaxWidth(m_pParent->get_preferred_size().Width())
  17 {
  18     m_pParent->connect_size_allocate(LINK(this, Breadcrumb, SizeAllocHdl));
  19     m_eMode = SvtBreadcrumbMode::ONLY_CURRENT_PATH;
  20     appendField(); // root
  21 }
  22
  23 IMPL_LINK(Breadcrumb, SizeAllocHdl, const Size&, rSize, void)
  24 {
  25     m_nMaxWidth = rSize.Width();
  26 }
  27
  28 Breadcrumb::~Breadcrumb()
  29 {
  30     m_pParent->connect_size_allocate(Link<const Size&, void>());
  31 }
  32
  33 void Breadcrumb::EnableFields( bool bEnable )
  34 {
  35     if( bEnable )
  36     {
  37         INetURLObject aURL( m_aCurrentURL );
  38         int nSegments = aURL.getSegmentCount();
  39         m_aSegments[nSegments]->m_xLink->set_sensitive(false);
  40     }
  41 }
  42
  43 void Breadcrumb::connect_clicked( const Link<Breadcrumb*,bool>& rLink )
  44 {
  45     m_aClickHdl = rLink;
  46 }
  47
  48 const OUString& Breadcrumb::GetHdlURL() const
  49 {
  50     return m_sClickedURL;
  51 }
  52
  53 void Breadcrumb::SetRootName( const OUString& rURL )
  54 {
  55     m_sRootName = rURL;
  56
  57     // we changed root - clear all fields
  58     for (size_t i = 1; i < m_aSegments.size(); ++i)
  59     {
  60         m_aSegments[i]->m_xLink->set_label("");
  61
  62         m_aSegments[i]->m_xLink->hide();
  63         m_aSegments[i]->m_xSeparator->hide();
  64         m_aSegments[i]->m_xLink->set_sensitive(true);
  65     }
  66 }
  67
  68 void Breadcrumb::SetURL( const OUString& rURL )
  69 {
  70     m_aCurrentURL = rURL;
  71     INetURLObject aURL(rURL);
  72     aURL.setFinalSlash();
  73
  74     bool bClear = m_eMode == SvtBreadcrumbMode::ONLY_CURRENT_PATH;
  75
  76     int nSegments = aURL.getSegmentCount();
  77
  78     size_t nVecSizeRequired = nSegments + 1;
  79
  80     while (m_aSegments.size() < nVecSizeRequired)
  81         appendField();
  82
  83     // fill the fields under root
  84     for (int i = nSegments; i; --i)
  85     {
  86         OUString sLabel = aURL.getName(INetURLObject::LAST_SEGMENT, true, INetURLObject::DecodeMechanism::WithCharset);
  87         OUString sLink = aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE);
  88
  89         if (m_eMode == SvtBreadcrumbMode::ALL_VISITED)
  90         {
  91             if( m_aSegments[i]->m_xLink->get_label() != sLabel )
  92                 bClear = true;
  93         }
  94
  95         m_aSegments[i]->m_xLink->hide();
  96         m_aSegments[i]->m_xLink->set_label(sLabel);
  97         m_aSegments[i]->m_xLink->set_sensitive(true);
  98         m_aSegments[i]->m_xLink->set_uri(sLink);
  99         m_aUris[m_aSegments[i]->m_xLink.get()] = sLink;
 100
 101         m_aSegments[i]->m_xSeparator->hide();
 102
 103         aURL.removeSegment();
 104     }
 105
 106     OUString sRootPath = aURL.GetMainURL(INetURLObject::DecodeMechanism::WithCharset);
 107
 108     // root field
 109     m_aSegments[0]->m_xLink->set_label( m_sRootName );
 110     m_aSegments[0]->m_xLink->set_sensitive(true);
 111     m_aSegments[0]->m_xLink->set_uri(sRootPath);
 112     m_aUris[m_aSegments[0]->m_xLink.get()] = sRootPath;
 113
 114     // clear unused fields
 115     for (size_t i = nSegments + 1; i < m_aSegments.size(); i++ )
 116     {
 117         if( bClear )
 118             m_aSegments[i]->m_xLink->set_label( "" );
 119
 120         m_aSegments[i]->m_xLink->hide();
 121         m_aSegments[i]->m_xSeparator->hide();
 122         m_aSegments[i]->m_xLink->set_sensitive(true);
 123     }
 124
 125     // show fields
 126     unsigned int nSeparatorWidth = m_aSegments[0]->m_xSeparator->get_preferred_size().Width();
 127     unsigned int nCurrentWidth = 0;
 128     unsigned int nLastVisible = nSegments;
 129
 130     bool bRight = ( m_eMode == SvtBreadcrumbMode::ALL_VISITED );
 131     bool bLeft = true;
 132
 133     int i = 0;
 134
 135     while( bLeft || bRight )
 136     {
 137         if( nSegments - i == -1 )
 138             bLeft = false;
 139
 140         if( bLeft )
 141         {
 142             unsigned int nIndex = nSegments - i;
 143
 144             if( showField( nIndex, m_nMaxWidth - nCurrentWidth ) )
 145             {
 146                 nCurrentWidth += m_aSegments[nIndex]->m_xLink->get_preferred_size().Width()
 147                                 + nSeparatorWidth + 2*SPACING;
 148             }
 149             else
 150             {
 151                 // label is too long
 152                 if( nSegments != 0 )
 153                 {
 154                     m_aSegments[0]->m_xLink->set_label("...");
 155                     m_aSegments[0]->m_xLink->set_sensitive(false);
 156                 }
 157                 bLeft = false;
 158             }
 159         }
 160
 161         if( nSegments + i == static_cast<int>(m_aSegments.size()) )
 162             bRight = false;
 163
 164         if( i != 0 && bRight )
 165         {
 166             unsigned int nIndex = nSegments + i;
 167
 168             if( m_aSegments[nIndex]->m_xLink->get_label().isEmpty() )
 169             {
 170                 bRight = false;
 171             }
 172             else if( showField( nIndex, m_nMaxWidth - nCurrentWidth ) )
 173             {
 174                 nCurrentWidth += m_aSegments[nIndex]->m_xLink->get_preferred_size().Width()
 175                                 + nSeparatorWidth + 3*SPACING;
 176                 nLastVisible = nIndex;
 177             }
 178             else
 179             {
 180                 bRight = false;
 181             }
 182         }
 183
 184         i++;
 185     }
 186
 187     // current dir should be inactive
 188     m_aSegments[nSegments]->m_xLink->set_sensitive(false);
 189
 190     // hide last separator
 191     m_aSegments[nLastVisible]->m_xSeparator->hide();
 192 }
 193
 194 void Breadcrumb::SetMode( SvtBreadcrumbMode eMode )
 195 {
 196     m_eMode = eMode;
 197 }
 198
 199 void Breadcrumb::appendField()
 200 {
 201     m_aSegments.emplace_back(std::make_unique<BreadcrumbPath>(m_pParent));
 202     size_t nIndex = m_aSegments.size() - 1;
 203     m_aSegments[nIndex]->m_xLink->hide();
 204     m_aSegments[nIndex]->m_xLink->connect_activate_link(LINK(this, Breadcrumb, ClickLinkHdl));
 205     m_aSegments[nIndex]->m_xSeparator->set_label( ">" );
 206     m_aSegments[nIndex]->m_xSeparator->hide();
 207 }
 208
 209 bool Breadcrumb::showField( unsigned int nIndex, unsigned int nWidthMax )
 210 {
 211     m_aSegments[nIndex]->m_xLink->show();
 212     m_aSegments[nIndex]->m_xSeparator->show();
 213
 214     unsigned int nSeparatorWidth = m_aSegments[0]->m_xSeparator->get_preferred_size().Width();
 215     unsigned int nWidth = m_aSegments[nIndex]->m_xLink->get_preferred_size().Width()
 216             + nSeparatorWidth + 3*SPACING;
 217
 218     if( nWidth > nWidthMax )
 219     {
 220         if( nIndex != 0 )
 221         {
 222             m_aSegments[nIndex]->m_xLink->hide();
 223             m_aSegments[nIndex]->m_xSeparator->hide();
 224         }
 225
 226         return false;
 227     }
 228
 229     return true;
 230 }
 231
 232 IMPL_LINK(Breadcrumb, ClickLinkHdl, weld::LinkButton&, rLink, bool)
 233 {
 234     m_sClickedURL = m_aUris[&rLink];
 235     return m_aClickHdl.Call(this);
 236 }
 237
 238 BreadcrumbPath::BreadcrumbPath(weld::Container* pContainer)
 239     : m_xBuilder(Application::CreateBuilder(pContainer, "fps/ui/breadcrumb.ui"))
 240     , m_xContainer(m_xBuilder->weld_container("container"))
 241     , m_xLink(m_xBuilder->weld_link_button("link"))
 242     , m_xSeparator(m_xBuilder->weld_label("label"))
 243 {
 244 }
 245
 246 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */