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/***************************************************************************
* Copyright (C) 2006 by Peter Penz <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#include "treeviewsidebarpage.h"
#include "dolphinmainwindow.h"
#include "dolphinsortfilterproxymodel.h"
#include "dolphinview.h"
#include "dolphinsettings.h"
#include "sidebartreeview.h"
#include "treeviewcontextmenu.h"
#include <kfileplacesmodel.h>
#include <kdirlister.h>
#include <kdirmodel.h>
#include <kfileitem.h>
#include <QtGui/QHeaderView>
#include <QtGui/QItemSelection>
#include <QtGui/QTreeView>
#include <QtGui/QBoxLayout>
TreeViewSidebarPage::TreeViewSidebarPage(QWidget* parent) :
SidebarPage(parent),
m_dirLister(0),
m_dirModel(0),
m_proxyModel(0),
m_treeView(0)
{
}
TreeViewSidebarPage::~TreeViewSidebarPage()
{
delete m_dirLister;
m_dirLister = 0;
}
QSize TreeViewSidebarPage::sizeHint() const
{
QSize size = SidebarPage::sizeHint();
size.setWidth(200);
return size;
}
void TreeViewSidebarPage::setUrl(const KUrl& url)
{
if (!url.isValid() || (url == SidebarPage::url())) {
return;
}
SidebarPage::setUrl(url);
if (m_dirLister != 0) {
loadTree(url);
}
}
void TreeViewSidebarPage::showEvent(QShowEvent* event)
{
if (event->spontaneous()) {
SidebarPage::showEvent(event);
return;
}
if (m_dirLister == 0) {
// Postpone the creating of the dir lister to the first show event.
// This assures that no performance and memory overhead is given when the TreeView is not
// used at all (see TreeViewSidebarPage::setUrl()).
m_dirLister = new KDirLister();
m_dirLister->setDirOnlyMode(true);
m_dirLister->setAutoUpdate(true);
m_dirLister->setMainWindow(this);
m_dirLister->setDelayedMimeTypes(true);
m_dirLister->setAutoErrorHandlingEnabled(false, this);
Q_ASSERT(m_dirModel == 0);
m_dirModel = new KDirModel(this);
m_dirModel->setDirLister(m_dirLister);
m_dirModel->setDropsAllowed(KDirModel::DropOnDirectory);
Q_ASSERT(m_proxyModel == 0);
m_proxyModel = new DolphinSortFilterProxyModel(this);
m_proxyModel->setSourceModel(m_dirModel);
Q_ASSERT(m_treeView == 0);
m_treeView = new SidebarTreeView(this);
m_treeView->setModel(m_proxyModel);
m_proxyModel->setSorting(DolphinView::SortByName);
m_proxyModel->setSortOrder(Qt::AscendingOrder);
connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
this, SLOT(updateActiveView(const QModelIndex&)));
connect(m_treeView, SIGNAL(urlsDropped(const KUrl::List&, const QModelIndex&)),
this, SLOT(dropUrls(const KUrl::List&, const QModelIndex&)));
QVBoxLayout* layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->addWidget(m_treeView);
}
loadTree(url());
SidebarPage::showEvent(event);
}
void TreeViewSidebarPage::contextMenuEvent(QContextMenuEvent* event)
{
SidebarPage::contextMenuEvent(event);
const QModelIndex index = m_treeView->indexAt(event->pos());
if (!index.isValid()) {
// only open a context menu above a directory item
return;
}
const QModelIndex dirModelIndex = m_proxyModel->mapToSource(index);
KFileItem* item = m_dirModel->itemForIndex(dirModelIndex);
emit changeSelection(KFileItemList());
TreeViewContextMenu contextMenu(this, item);
contextMenu.open();
}
void TreeViewSidebarPage::expandSelectionParent()
{
disconnect(m_dirLister, SIGNAL(completed()),
this, SLOT(expandSelectionParent()));
// expand the parent folder of the selected item
KUrl parentUrl = url().upUrl();
if (!m_dirLister->url().isParentOf(parentUrl)) {
return;
}
QModelIndex index = m_dirModel->indexForUrl(parentUrl);
if (index.isValid()) {
QModelIndex proxyIndex = m_proxyModel->mapFromSource(index);
m_treeView->setExpanded(proxyIndex, true);
// select the item and assure that the item is visible
index = m_dirModel->indexForUrl(url());
if (index.isValid()) {
proxyIndex = m_proxyModel->mapFromSource(index);
m_treeView->scrollTo(proxyIndex);
QItemSelectionModel* selModel = m_treeView->selectionModel();
selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::Select);
}
}
}
void TreeViewSidebarPage::updateActiveView(const QModelIndex& index)
{
const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
const KFileItem* item = m_dirModel->itemForIndex(dirIndex);
if (item != 0) {
const KUrl& url = item->url();
emit changeUrl(url);
}
}
void TreeViewSidebarPage::dropUrls(const KUrl::List& urls,
const QModelIndex& index)
{
if (index.isValid()) {
const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
KFileItem* item = m_dirModel->itemForIndex(dirIndex);
Q_ASSERT(item != 0);
if (item->isDir()) {
emit urlsDropped(urls, item->url());
}
}
}
void TreeViewSidebarPage::loadTree(const KUrl& url)
{
Q_ASSERT(m_dirLister != 0);
// adjust the root of the tree to the base bookmark
KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
KUrl baseUrl = placesModel->url(placesModel->closestItem(url));
if (!baseUrl.isValid()) {
// it's possible that no closest item is available and hence an
// empty URL is returned
baseUrl = url;
}
if (m_dirLister->url() != baseUrl) {
m_dirLister->stop();
m_dirLister->openUrl(baseUrl);
}
// select the folder which contains the given URL
QItemSelectionModel* selModel = m_treeView->selectionModel();
selModel->clearSelection();
const QModelIndex index = m_dirModel->indexForUrl(url);
if (index.isValid()) {
// the item with the given URL is already part of the model
const QModelIndex proxyIndex = m_proxyModel->mapFromSource(index);
m_treeView->scrollTo(proxyIndex);
selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::Select);
} else {
// The item with the given URL is not loaded by the model yet. Iterate
// backward to the base URL and trigger the loading of the items for
// each hierarchy level.
connect(m_dirLister, SIGNAL(completed()),
this, SLOT(expandSelectionParent()));
// Implementation note: It is important to remove the trailing slash from
// the parent URL, as the directories from the dir lister (KDirLister::directories())
// don't have a trailing slash and hence KUrl::List::contains() would fail...
KUrl parentUrl = url.upUrl();
parentUrl.adjustPath(KUrl::RemoveTrailingSlash);
while (!parentUrl.isParentOf(baseUrl)) {
if (m_dirLister->directories().contains(parentUrl)) {
m_dirLister->updateDirectory(parentUrl);
} else {
m_dirLister->openUrl(parentUrl, true, false);
}
parentUrl = parentUrl.upUrl();
parentUrl.adjustPath(KUrl::RemoveTrailingSlash);
}
}
}
#include "treeviewsidebarpage.moc"
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