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 "dolphincontextmenu.h"
  24 #include "dolphinmainwindow.h"
  25 #include "dolphinsortfilterproxymodel.h"
  26 #include "dolphinview.h"
  27 #include "sidebartreeview.h"
  28
  29 #include <kdirlister.h>
  30 #include <kdirmodel.h>
  31 #include <kfileitem.h>
  32
  33 #include <QHeaderView>
  34 #include <QItemSelectionModel>
  35 #include <QTreeView>
  36 #include <QVBoxLayout>
  37
  38 // TODO: currently when using a proxy model the strange effect occurs
  39 // that items get duplicated. Activate the following define to have the proxy
  40 // model:
  41 //#define USE_PROXY_MODEL
  42
  43 TreeViewSidebarPage::TreeViewSidebarPage(DolphinMainWindow* mainWindow,
  44                                          QWidget* parent) :
  45     SidebarPage(mainWindow, parent),
  46     m_dirLister(0),
  47     m_dirModel(0),
  48     m_proxyModel(0),
  49     m_treeView(0),
  50     m_selectedUrl()
  51 {
  52     Q_ASSERT(mainWindow != 0);
  53
  54     m_dirLister = new KDirLister();
  55     m_dirLister->setDirOnlyMode(true);
  56     m_dirLister->setAutoUpdate(true);
  57     m_dirLister->setMainWindow(this);
  58     m_dirLister->setDelayedMimeTypes(true);
  59     m_dirLister->setAutoErrorHandlingEnabled(false, this);
  60
  61     m_dirModel = new KDirModel();
  62     m_dirModel->setDirLister(m_dirLister);
  63     m_dirModel->setDropsAllowed(KDirModel::DropOnDirectory);
  64
  65
  66 #if defined(USE_PROXY_MODEL)
  67     m_proxyModel = new DolphinSortFilterProxyModel(this);
  68     m_proxyModel->setSourceModel(m_dirModel);
  69
  70     m_treeView = new SidebarTreeView(mainWindow, this);
  71     m_treeView->setModel(m_proxyModel);
  72
  73     m_proxyModel->setSorting(DolphinView::SortByName);
  74     m_proxyModel->setSortOrder(Qt::Ascending);
  75 #else
  76     m_treeView = new SidebarTreeView(mainWindow, this);
  77     m_treeView->setModel(m_dirModel);
  78 #endif
  79
  80     connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
  81             this, SLOT(updateActiveView(const QModelIndex&)));
  82     connect(m_treeView, SIGNAL(urlsDropped(const KUrl::List&, const QModelIndex&)),
  83             this, SLOT(dropUrls(const KUrl::List&, const QModelIndex&)));
  84
  85     QVBoxLayout* layout = new QVBoxLayout(this);
  86     layout->setMargin(0);
  87     layout->addWidget(m_treeView);
  88 }
  89
  90 TreeViewSidebarPage::~TreeViewSidebarPage()
  91 {
  92     delete m_dirLister;
  93     m_dirLister = 0;
  94 }
  95
  96 void TreeViewSidebarPage::activeViewChanged()
  97 {
  98     connectToActiveView();
  99 }
 100
 101 void TreeViewSidebarPage::showEvent(QShowEvent* event)
 102 {
 103     SidebarPage::showEvent(event);
 104     connectToActiveView();
 105 }
 106
 107 void TreeViewSidebarPage::contextMenuEvent(QContextMenuEvent* event)
 108 {
 109     SidebarPage::contextMenuEvent(event);
 110
 111     const QModelIndex index = m_treeView->indexAt(event->pos());
 112     if (!index.isValid()) {
 113         // only open a context menu above a directory item
 114         return;
 115     }
 116
 117 #if defined(USE_PROXY_MODEL)
 118     const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
 119     KFileItem* item = m_dirModel->itemForIndex(dirModelIndex);
 120 #else
 121     KFileItem* item = m_dirModel->itemForIndex(index);
 122 #endif
 123
 124     DolphinContextMenu contextMenu(mainWindow(),
 125                                    item,
 126                                    m_dirLister->url(),
 127                                    DolphinContextMenu::SidebarView);
 128     contextMenu.open();
 129 }
 130
 131 void TreeViewSidebarPage::updateSelection(const KUrl& url)
 132 {
 133     if (!url.isValid() || (url == m_selectedUrl)) {
 134         return;
 135     }
 136
 137     m_selectedUrl = url;
 138
 139     // adjust the root of the tree to the base bookmark
 140     const KUrl baseUrl = BookmarkSelector::baseBookmark(url).url();
 141     if (m_dirLister->url() != baseUrl) {
 142         m_dirLister->stop();
 143         m_dirLister->openUrl(baseUrl);
 144     }
 145
 146     // select the folder which contains the given URL
 147     QItemSelectionModel* selModel = m_treeView->selectionModel();
 148     selModel->clearSelection();
 149
 150     const KFileItem item(S_IFDIR, KFileItem::Unknown, url);
 151
 152     const QModelIndex index = m_dirModel->indexForItem(item);
 153     if (index.isValid()) {
 154 #if defined(USE_PROXY_MODEL)
 155         // the item with the given URL is already part of the model
 156         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(index);
 157         m_treeView->scrollTo(proxyIndex);
 158         selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::Select);
 159 #else
 160         m_treeView->scrollTo(index);
 161         selModel->setCurrentIndex(index, QItemSelectionModel::Select);
 162 #endif
 163     }
 164     else {
 165         // The item with the given URL is not loaded by the model yet. Iterate
 166         // backward to the base URL and trigger the loading of the items for
 167         // each hierarchy level.
 168         connect(m_dirLister, SIGNAL(completed()),
 169                 this, SLOT(expandSelectionParent()));
 170
 171         KUrl parentUrl = url.upUrl();
 172         while (!parentUrl.isParentOf(baseUrl)) {
 173             m_dirLister->openUrl(parentUrl, true, false);
 174             parentUrl = parentUrl.upUrl();
 175         }
 176     }
 177 }
 178
 179 void TreeViewSidebarPage::expandSelectionParent()
 180 {
 181     disconnect(m_dirLister, SIGNAL(completed()),
 182                this, SLOT(expandSelectionParent()));
 183
 184     // expand the parent folder of the selected item
 185     const KFileItem parentItem(S_IFDIR, KFileItem::Unknown, m_selectedUrl.upUrl());
 186     QModelIndex index = m_dirModel->indexForItem(parentItem);
 187     if (index.isValid()) {
 188 #if defined(USE_PROXY_MODEL)
 189         QModelIndex proxyIndex = m_proxyModel->mapFromSource(index);
 190         m_treeView->setExpanded(proxyIndex, true);
 191 #else
 192         m_treeView->setExpanded(index, true);
 193 #endif
 194
 195         // select the item and assure that the item is visible
 196         const KFileItem selectedItem(S_IFDIR, KFileItem::Unknown, m_selectedUrl);
 197         index = m_dirModel->indexForItem(selectedItem);
 198         if (index.isValid()) {
 199 #if defined(USE_PROXY_MODEL)
 200             proxyIndex = m_proxyModel->mapFromSource(index);
 201             m_treeView->scrollTo(proxyIndex);
 202
 203             QItemSelectionModel* selModel = m_treeView->selectionModel();
 204             selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::Select);
 205 #else
 206             m_treeView->scrollTo(index);
 207
 208             QItemSelectionModel* selModel = m_treeView->selectionModel();
 209             selModel->setCurrentIndex(index, QItemSelectionModel::Select);
 210 #endif
 211
 212         }
 213     }
 214 }
 215
 216 void TreeViewSidebarPage::updateActiveView(const QModelIndex& index)
 217 {
 218 #if defined(USE_PROXY_MODEL)
 219     const QModelIndex& dirIndex = m_proxyModel->mapToSource(index);
 220     const KFileItem* item = m_dirModel->itemForIndex(dirIndex);
 221 #else
 222     const KFileItem* item = m_dirModel->itemForIndex(index);
 223 #endif
 224     if (item != 0) {
 225         const KUrl& url = item->url();
 226         mainWindow()->activeView()->setUrl(url);
 227     }
 228 }
 229
 230 void TreeViewSidebarPage::dropUrls(const KUrl::List& urls,
 231                                    const QModelIndex& index)
 232 {
 233     if (index.isValid()) {
 234 #if defined(USE_PROXY_MODEL)
 235         const QModelIndex& dirIndex = m_proxyModel->mapToSource(index);
 236         KFileItem* item = m_dirModel->itemForIndex(dirIndex);
 237 #else
 238         KFileItem* item = m_dirModel->itemForIndex(index);
 239 #endif
 240         Q_ASSERT(item != 0);
 241         if (item->isDir()) {
 242             mainWindow()->dropUrls(urls, item->url());
 243         }
 244     }
 245 }
 246
 247 void TreeViewSidebarPage::connectToActiveView()
 248 {
 249     const QWidget* parent = parentWidget();
 250     if ((parent == 0) || parent->isHidden()) {
 251         return;
 252     }
 253
 254     const DolphinView* view = mainWindow()->activeView();
 255     const KUrl& url = view->url();
 256
 257     connect(view, SIGNAL(urlChanged(const KUrl&)),
 258             this, SLOT(updateSelection(const KUrl&)));
 259
 260     updateSelection(url);
 261 }
 262
 263 #include "treeviewsidebarpage.moc"