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kfileplacesselector.cpp

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00001 /***************************************************************************
00002  *   Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at)                  *
00003  *   Copyright (C) 2007 by Kevin Ottens (ervin@kde.org)                    *
00004  *                                                                         *
00005  *   This library is free software; you can redistribute it and/or         *
00006  *   modify it under the terms of the GNU Lesser General Public            *
00007  *   License as published by the Free Software Foundation; either          *
00008  *   version 2 of the License, or (at your option) any later version.      *
00009  *                                                                         *
00010  *   This library is distributed in the hope that it will be useful,       *
00011  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00012  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00013  *   Lesser General Public License for more details.                       *
00014  *                                                                         *
00015  *   You should have received a copy of the GNU Lesser General Public      *
00016  *   License along with this library; if not, write to the                 *
00017  *   Free Software Foundation, Inc.,                                       *
00018  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
00019  ***************************************************************************/
00020 
00021 #include "kfileplacesselector_p.h"
00022 
00023 #include "kurlnavigator.h"
00024 
00025 #include <kiconloader.h>
00026 #include <kglobalsettings.h>
00027 #include <kfileplacesmodel.h>
00028 #include <kmenu.h>
00029 #include <kmimetype.h>
00030 #include <kdebug.h>
00031 
00032 #include <QtGui/QDragEnterEvent>
00033 #include <QtGui/QDragLeaveEvent>
00034 #include <QtGui/QDropEvent>
00035 #include <QtGui/QPainter>
00036 #include <QtGui/QPixmap>
00037 #include <kicon.h>
00038 
00039 KFilePlacesSelector::KFilePlacesSelector(KUrlNavigator* parent, KFilePlacesModel* placesModel) :
00040     KUrlButton(parent),
00041     m_selectedItem(-1),
00042     m_placesModel(placesModel)
00043 {
00044     setFocusPolicy(Qt::NoFocus);
00045 
00046     m_placesMenu = new KMenu(this);
00047 
00048     updateMenu();
00049 
00050     connect(m_placesModel, SIGNAL(rowsInserted(const QModelIndex&, int, int)),
00051             this, SLOT(updateMenu()));
00052     connect(m_placesModel, SIGNAL(rowsRemoved(const QModelIndex&, int, int)),
00053             this, SLOT(updateMenu()));
00054     connect(m_placesModel, SIGNAL(dataChanged(const QModelIndex&, const QModelIndex&)),
00055             this, SLOT(updateMenu()));
00056     connect(m_placesMenu, SIGNAL(triggered(QAction*)),
00057             this, SLOT(activatePlace(QAction*)));
00058 
00059     setMenu(m_placesMenu);
00060 
00061     setAcceptDrops(true);
00062 }
00063 
00064 KFilePlacesSelector::~KFilePlacesSelector()
00065 {
00066 }
00067 
00068 void KFilePlacesSelector::updateMenu()
00069 {
00070     m_placesMenu->clear();
00071 
00072     updateSelection(m_selectedUrl);
00073     const int rowCount = m_placesModel->rowCount();
00074     for (int i = 0; i < rowCount; ++i) {
00075         QModelIndex index = m_placesModel->index(i, 0);
00076         QAction* action = new QAction(m_placesModel->icon(index),
00077                                       m_placesModel->text(index),
00078                                       m_placesMenu);
00079         m_placesMenu->addAction(action);
00080         action->setData(i);
00081         if (i == m_selectedItem) {
00082             setIcon(m_placesModel->icon(index));
00083         }
00084     }
00085 
00086     updateTeardownAction();
00087 }
00088 
00089 void KFilePlacesSelector::updateTeardownAction()
00090 {
00091     const int rowCount = m_placesModel->rowCount();
00092     if (m_placesMenu->actions().size()==rowCount+2) {
00093         // remove teardown action
00094         QAction *action = m_placesMenu->actions().at(rowCount+1);
00095         m_placesMenu->removeAction(action);
00096         delete action;
00097 
00098         // remove separator
00099         action = m_placesMenu->actions().at(rowCount);
00100         m_placesMenu->removeAction(action);
00101         delete action;
00102     }
00103 
00104     const QModelIndex index = m_placesModel->index(m_selectedItem, 0);
00105     QAction *teardown = m_placesModel->teardownActionForIndex(index);
00106     if (teardown!=0) {
00107         teardown->setParent(m_placesMenu);
00108         teardown->setData("teardownAction");
00109 
00110         m_placesMenu->addSeparator();
00111         m_placesMenu->addAction(teardown);
00112     }
00113 }
00114 
00115 void KFilePlacesSelector::updateSelection(const KUrl& url)
00116 {
00117     const QModelIndex index = m_placesModel->closestItem(url);
00118     if (index.isValid()) {
00119         m_selectedItem = index.row();
00120         m_selectedUrl = url;
00121         setIcon(m_placesModel->icon(index));
00122     }
00123     else {
00124         m_selectedItem = -1;
00125         // No bookmark has been found which matches to the given Url. Show
00126         // a generic folder icon as pixmap for indication:
00127         setIcon(KIcon("folder"));
00128     }
00129     updateTeardownAction();
00130 }
00131 
00132 KUrl KFilePlacesSelector::selectedPlaceUrl() const
00133 {
00134     const QModelIndex index = m_placesModel->index(m_selectedItem, 0);
00135     return index.isValid() ? m_placesModel->url(index) : KUrl();
00136 }
00137 
00138 QString KFilePlacesSelector::selectedPlaceText() const
00139 {
00140     const QModelIndex index = m_placesModel->index(m_selectedItem, 0);
00141     return index.isValid() ? m_placesModel->text(index) : QString();
00142 }
00143 
00144 QSize KFilePlacesSelector::sizeHint() const
00145 {
00146     const int height = KUrlButton::sizeHint().height();
00147     return QSize(height, height);
00148 }
00149 
00150 void KFilePlacesSelector::paintEvent(QPaintEvent* event)
00151 {
00152     Q_UNUSED(event);
00153     QPainter painter(this);
00154     drawHoverBackground(&painter);
00155 
00156     // draw icon
00157     const QPixmap pixmap = icon().pixmap(QSize(22, 22), QIcon::Normal);
00158     const int x = (width() -  pixmap.width()) / 2;
00159     const int y = (height() - pixmap.height()) / 2;
00160     painter.drawPixmap(x, y, pixmap);
00161 }
00162 
00163 void KFilePlacesSelector::dragEnterEvent(QDragEnterEvent* event)
00164 {
00165     if (event->mimeData()->hasUrls()) {
00166         setDisplayHintEnabled(DraggedHint, true);
00167         event->acceptProposedAction();
00168 
00169         update();
00170     }
00171 }
00172 
00173 void KFilePlacesSelector::dragLeaveEvent(QDragLeaveEvent* event)
00174 {
00175     KUrlButton::dragLeaveEvent(event);
00176 
00177     setDisplayHintEnabled(DraggedHint, false);
00178     update();
00179 }
00180 
00181 void KFilePlacesSelector::dropEvent(QDropEvent* event)
00182 {
00183     setDisplayHintEnabled(DraggedHint, false);
00184     update();
00185 
00186     const KUrl::List urlList = KUrl::List::fromMimeData(event->mimeData());
00187     if (urlList.isEmpty()) {
00188         return;
00189     }
00190     foreach(const KUrl &url, urlList) {
00191         KMimeType::Ptr mimetype = KMimeType::findByUrl(url);
00192         if (mimetype->is("inode/directory")) {
00193             m_placesModel->addPlace(url.fileName(), url);
00194         }
00195     }
00196 }
00197 
00198 void KFilePlacesSelector::activatePlace(QAction* action)
00199 {
00200     Q_ASSERT(action != 0);
00201     if (action->data().toString()=="teardownAction") {
00202         QModelIndex index = m_placesModel->index(m_selectedItem, 0);
00203         m_placesModel->requestTeardown(index);
00204         return;
00205     }
00206 
00207     QModelIndex index = m_placesModel->index(action->data().toInt(), 0);
00208 
00209     m_lastClickedIndex = QPersistentModelIndex();
00210 
00211     if (m_placesModel->setupNeeded(index)) {
00212         connect(m_placesModel, SIGNAL(setupDone(const QModelIndex &, bool)),
00213                 this, SLOT(onStorageSetupDone(const QModelIndex &, bool)));
00214 
00215         m_lastClickedIndex = index;
00216         m_placesModel->requestSetup(index);
00217         return;
00218     }
00219     else if (index.isValid()) {
00220         m_selectedItem = index.row();
00221         setIcon(m_placesModel->icon(index));
00222         updateTeardownAction();
00223         emit placeActivated(m_placesModel->url(index));
00224     }
00225 }
00226 
00227 void KFilePlacesSelector::onStorageSetupDone(const QModelIndex &index, bool success)
00228 {
00229     if (m_lastClickedIndex==index)  {
00230         if (success) {
00231             m_selectedItem = index.row();
00232             setIcon(m_placesModel->icon(index));
00233             updateTeardownAction();
00234             emit placeActivated(m_placesModel->url(index));
00235         }
00236         m_lastClickedIndex = QPersistentModelIndex();
00237     }
00238 }
00239 
00240 #include "kfileplacesselector_p.moc"
00241 

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