src/treeviewsidebarpage.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "treeviewsidebarpage.h"
  21
  22 #include "bookmarkselector.h"
  23 #include "dolphinmainwindow.h"
  24 #include "dolphinsortfilterproxymodel.h"
  25 #include "dolphinview.h"
  26 #include "sidebartreeview.h"
  27
  28 #include <kdirlister.h>
  29 #include <kdirmodel.h>
  30 #include <kfileitem.h>
  31
  32 #include <QHeaderView>
  33 #include <QItemSelectionModel>
  34 #include <QTreeView>
  35 #include <QVBoxLayout>
  36
  37 // TODO: currently when using a proxy model the strange effect occurs
  38 // that items get duplicated. Activate the following define to have the proxy
  39 // model:
  40 //#define USE_PROXY_MODEL
  41
  42 TreeViewSidebarPage::TreeViewSidebarPage(DolphinMainWindow* mainWindow,
  43                                          QWidget* parent) :
  44     SidebarPage(mainWindow, parent),
  45     m_dirLister(0),
  46     m_dirModel(0),
  47     m_proxyModel(0),
  48     m_treeView(0),
  49     m_selectedUrl()
  50 {
  51     Q_ASSERT(mainWindow != 0);
  52
  53     m_dirLister = new KDirLister();
  54     m_dirLister->setDirOnlyMode(true);
  55     m_dirLister->setAutoUpdate(true);
  56     m_dirLister->setMainWindow(this);
  57     m_dirLister->setDelayedMimeTypes(true);
  58     m_dirLister->setAutoErrorHandlingEnabled(false, this);
  59
  60     m_dirModel = new KDirModel();
  61     m_dirModel->setDirLister(m_dirLister);
  62     m_dirModel->setDropsAllowed(KDirModel::DropOnDirectory);
  63
  64
  65 #if defined(USE_PROXY_MODEL)
  66     m_proxyModel = new DolphinSortFilterProxyModel(this);
  67     m_proxyModel->setSourceModel(m_dirModel);
  68
  69     m_treeView = new SidebarTreeView(mainWindow, this);
  70     m_treeView->setModel(m_proxyModel);
  71
  72     m_proxyModel->setSorting(DolphinView::SortByName);
  73     m_proxyModel->setSortOrder(Qt::Ascending);
  74 #else
  75     m_treeView = new SidebarTreeView(mainWindow, this);
  76     m_treeView->setModel(m_dirModel);
  77 #endif
  78
  79     connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
  80             this, SLOT(updateActiveView(const QModelIndex&)));
  81     connect(m_treeView, SIGNAL(doubleClicked(const QModelIndex&)),
  82             this, SLOT(slotDoubleClicked(const QModelIndex&)));
  83
  84     QVBoxLayout* layout = new QVBoxLayout(this);
  85     layout->addWidget(m_treeView);
  86 }
  87
  88 TreeViewSidebarPage::~TreeViewSidebarPage()
  89 {
  90     delete m_dirLister;
  91     m_dirLister = 0;
  92 }
  93
  94 void TreeViewSidebarPage::activeViewChanged()
  95 {
  96     connectToActiveView();
  97 }
  98
  99 void TreeViewSidebarPage::showEvent(QShowEvent* event)
 100 {
 101     SidebarPage::showEvent(event);
 102     connectToActiveView();
 103 }
 104
 105 void TreeViewSidebarPage::updateSelection(const KUrl& url)
 106 {
 107     if (!url.isValid() || (url == m_selectedUrl)) {
 108         return;
 109     }
 110
 111     m_selectedUrl = url;
 112
 113     // adjust the root of the tree to the base bookmark
 114     const KUrl baseUrl = BookmarkSelector::baseBookmark(url).url();
 115     if (m_dirLister->url() != baseUrl) {
 116         m_dirLister->stop();
 117         m_dirLister->openUrl(baseUrl);
 118     }
 119
 120     // select the folder which contains the given URL
 121     QItemSelectionModel* selModel = m_treeView->selectionModel();
 122     selModel->clearSelection();
 123
 124     const KFileItem item(S_IFDIR, KFileItem::Unknown, url);
 125
 126     const QModelIndex index = m_dirModel->indexForItem(item);
 127     if (index.isValid()) {
 128 #if defined(USE_PROXY_MODEL)
 129         // the item with the given URL is already part of the model
 130         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(index);
 131         m_treeView->scrollTo(proxyIndex);
 132         selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::Select);
 133 #else
 134         m_treeView->scrollTo(index);
 135         selModel->setCurrentIndex(index, QItemSelectionModel::Select);
 136 #endif
 137     }
 138     else {
 139         // The item with the given URL is not loaded by the model yet. Iterate
 140         // backward to the base URL and trigger the loading of the items for
 141         // each hierarchy level.
 142         connect(m_dirLister, SIGNAL(completed()),
 143                 this, SLOT(expandSelectionParent()));
 144
 145         KUrl parentUrl = url.upUrl();
 146         while (!parentUrl.isParentOf(baseUrl)) {
 147             m_dirLister->openUrl(parentUrl, true, false);
 148             parentUrl = parentUrl.upUrl();
 149         }
 150     }
 151 }
 152
 153 void TreeViewSidebarPage::expandSelectionParent()
 154 {
 155     disconnect(m_dirLister, SIGNAL(completed()),
 156                this, SLOT(expandSelectionParent()));
 157
 158     // expand the parent folder of the selected item
 159     const KFileItem parentItem(S_IFDIR, KFileItem::Unknown, m_selectedUrl.upUrl());
 160     QModelIndex index = m_dirModel->indexForItem(parentItem);
 161     if (index.isValid()) {
 162 #if defined(USE_PROXY_MODEL)
 163         QModelIndex proxyIndex = m_proxyModel->mapFromSource(index);
 164         m_treeView->setExpanded(proxyIndex, true);
 165 #else
 166         m_treeView->setExpanded(index, true);
 167 #endif
 168
 169         // select the item and assure that the item is visible
 170         const KFileItem selectedItem(S_IFDIR, KFileItem::Unknown, m_selectedUrl);
 171         index = m_dirModel->indexForItem(selectedItem);
 172         if (index.isValid()) {
 173 #if defined(USE_PROXY_MODEL)
 174             proxyIndex = m_proxyModel->mapFromSource(index);
 175             m_treeView->scrollTo(proxyIndex);
 176
 177             QItemSelectionModel* selModel = m_treeView->selectionModel();
 178             selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::Select);
 179 #else
 180             m_treeView->scrollTo(index);
 181
 182             QItemSelectionModel* selModel = m_treeView->selectionModel();
 183             selModel->setCurrentIndex(index, QItemSelectionModel::Select);
 184 #endif
 185
 186         }
 187     }
 188 }
 189
 190 void TreeViewSidebarPage::updateActiveView(const QModelIndex& index)
 191 {
 192 #if defined(USE_PROXY_MODEL)
 193     const QModelIndex& dirIndex = m_proxyModel->mapToSource(index);
 194     const KFileItem* item = m_dirModel->itemForIndex(dirIndex);
 195 #else
 196     const KFileItem* item = m_dirModel->itemForIndex(index);
 197 #endif
 198     if (item != 0) {
 199         const KUrl& url = item->url();
 200         mainWindow()->activeView()->setUrl(url);
 201     }
 202 }
 203
 204 void TreeViewSidebarPage::connectToActiveView()
 205 {
 206     const QWidget* parent = parentWidget();
 207     if ((parent == 0) || parent->isHidden()) {
 208         return;
 209     }
 210
 211     const DolphinView* view = mainWindow()->activeView();
 212     const KUrl& url = view->url();
 213
 214     connect(view, SIGNAL(urlChanged(const KUrl&)),
 215             this, SLOT(updateSelection(const KUrl&)));
 216
 217     updateSelection(url);
 218 }
 219
 220 #include "treeviewsidebarpage.moc"