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 "dolphinview.h"
  25
  26 #include "kdirlister.h"
  27 #include "kdirmodel.h"
  28
  29 #include <QHeaderView>
  30 #include <QItemSelectionModel>
  31 #include <QTreeView>
  32 #include <QVBoxLayout>
  33
  34 TreeViewSidebarPage::TreeViewSidebarPage(DolphinMainWindow* mainWindow,
  35                                          QWidget* parent) :
  36     SidebarPage(mainWindow, parent),
  37     m_dirLister(0),
  38     m_dirModel(0),
  39     m_treeView(0),
  40     m_selectedUrl()
  41 {
  42     Q_ASSERT(mainWindow != 0);
  43
  44     m_dirLister = new KDirLister();
  45     m_dirLister->setDirOnlyMode(true);
  46     m_dirLister->setAutoUpdate(true);
  47     m_dirLister->setMainWindow(this);
  48     m_dirLister->setDelayedMimeTypes(true);
  49     m_dirLister->setAutoErrorHandlingEnabled(false, this);
  50
  51     m_dirModel = new KDirModel();
  52     m_dirModel->setDirLister(m_dirLister);
  53
  54     m_treeView = new QTreeView(this);
  55     m_treeView->setModel(m_dirModel);
  56     m_treeView->setSelectionMode(QAbstractItemView::SingleSelection);
  57     m_treeView->setEditTriggers(QAbstractItemView::NoEditTriggers);
  58
  59     // hide all columns except of the 'Name' column
  60     m_treeView->hideColumn(KDirModel::Size);
  61     m_treeView->hideColumn(KDirModel::ModifiedTime);
  62     m_treeView->hideColumn(KDirModel::Permissions);
  63     m_treeView->hideColumn(KDirModel::Owner);
  64     m_treeView->hideColumn(KDirModel::Group);
  65     m_treeView->header()->hide();
  66
  67     connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
  68             this, SLOT(updateActiveView(const QModelIndex&)));
  69     connect(m_treeView, SIGNAL(doubleClicked(const QModelIndex&)),
  70             this, SLOT(slotDoubleClicked(const QModelIndex&)));
  71
  72     QVBoxLayout* layout = new QVBoxLayout(this);
  73     layout->addWidget(m_treeView);
  74 }
  75
  76 TreeViewSidebarPage::~TreeViewSidebarPage()
  77 {
  78     delete m_dirLister;
  79     m_dirLister = 0;
  80 }
  81
  82 void TreeViewSidebarPage::activeViewChanged()
  83 {
  84     connectToActiveView();
  85 }
  86
  87 void TreeViewSidebarPage::showEvent(QShowEvent* event)
  88 {
  89     SidebarPage::showEvent(event);
  90     connectToActiveView();
  91 }
  92
  93 void TreeViewSidebarPage::updateSelection(const KUrl& url)
  94 {
  95     if (!url.isValid() || (url == m_selectedUrl)) {
  96         return;
  97     }
  98
  99     m_selectedUrl = url;
 100
 101     // adjust the root of the tree to the base bookmark
 102     const KUrl baseUrl = BookmarkSelector::baseBookmark(url).url();
 103     if (m_dirLister->url() != baseUrl) {
 104         m_dirLister->stop();
 105         m_dirLister->openUrl(baseUrl);
 106     }
 107
 108     // select the folder which contains the given URL
 109     QItemSelectionModel* selModel = m_treeView->selectionModel();
 110     selModel->clearSelection();
 111
 112     const KFileItem item(S_IFDIR, KFileItem::Unknown, url);
 113     const QModelIndex index = m_dirModel->indexForItem(item);
 114     if (index.isValid()) {
 115         // the item with the given URL is already part of the model
 116         m_treeView->scrollTo(index);
 117         selModel->setCurrentIndex(index, QItemSelectionModel::Select);
 118     }
 119     else {
 120         // The item with the given URL is not loaded by the model yet. Iterate
 121         // backward to the base URL and trigger the loading of the items for
 122         // each hierarchy level.
 123         connect(m_dirLister, SIGNAL(completed()),
 124                 this, SLOT(expandSelectionParent()));
 125
 126         KUrl parentUrl = url.upUrl();
 127         while (parentUrl != baseUrl) {
 128             m_dirLister->openUrl(parentUrl, true, false);
 129             parentUrl = parentUrl.upUrl();
 130         }
 131     }
 132 }
 133
 134 void TreeViewSidebarPage::expandSelectionParent()
 135 {
 136     disconnect(m_dirLister, SIGNAL(completed()),
 137                this, SLOT(expandSelectionParent()));
 138
 139     // expand the parent folder of the selected item
 140     const KFileItem parentItem(S_IFDIR, KFileItem::Unknown, m_selectedUrl.upUrl());
 141     QModelIndex index = m_dirModel->indexForItem(parentItem);
 142     if (index.isValid()) {
 143         m_treeView->setExpanded(index, true);
 144
 145         // select the item and assure that the item is visible
 146         const KFileItem selectedItem(S_IFDIR, KFileItem::Unknown, m_selectedUrl);
 147         index = m_dirModel->indexForItem(selectedItem);
 148         if (index.isValid()) {
 149             m_treeView->scrollTo(index);
 150
 151             QItemSelectionModel* selModel = m_treeView->selectionModel();
 152             selModel->setCurrentIndex(index, QItemSelectionModel::Select);
 153         }
 154     }
 155 }
 156
 157 void TreeViewSidebarPage::updateActiveView(const QModelIndex& index)
 158 {
 159     const KFileItem* item = m_dirModel->itemForIndex(index);
 160     if (item != 0) {
 161         const KUrl& url = item->url();
 162         mainWindow()->activeView()->setUrl(url);
 163     }
 164 }
 165
 166 void TreeViewSidebarPage::connectToActiveView()
 167 {
 168     const QWidget* parent = parentWidget();
 169     if ((parent == 0) || parent->isHidden()) {
 170         return;
 171     }
 172
 173     const DolphinView* view = mainWindow()->activeView();
 174     const KUrl& url = view->url();
 175
 176     connect(view, SIGNAL(urlChanged(const KUrl&)),
 177             this, SLOT(updateSelection(const KUrl&)));
 178
 179     updateSelection(url);
 180 }
 181
 182 #include "treeviewsidebarpage.moc"