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[dolphin.git] / src / dolphindetailsview.cpp
index 15f108dbb174fc975c5952a30f9c6b8536b19761..55851dc95da294b3f030b6fc2373f7adb1df3399 100644 (file)
 #include "dolphincontroller.h"
 #include "dolphinsettings.h"
 #include "dolphinsortfilterproxymodel.h"
+#include "draganddrophelper.h"
 #include "viewproperties.h"
 
 #include "dolphin_detailsmodesettings.h"
 
+#include <kdirmodel.h>
 #include <klocale.h>
 #include <kmenu.h>
 
+#include <QAbstractProxyModel>
 #include <QAction>
 #include <QApplication>
 #include <QHeaderView>
@@ -41,6 +44,7 @@
 DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* controller) :
     QTreeView(parent),
     m_controller(controller),
+    m_clearAdditionalInfo(false),
     m_dragging(false),
     m_showElasticBand(false),
     m_elasticBandOrigin(),
@@ -82,10 +86,10 @@ DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* contr
     // RETURN-key in keyPressEvent().
     if (KGlobalSettings::singleClick()) {
         connect(this, SIGNAL(clicked(const QModelIndex&)),
-                this, SLOT(slotItemActivated(const QModelIndex&)));
+                this, SLOT(triggerItem(const QModelIndex&)));
     } else {
         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
-                this, SLOT(slotItemActivated(const QModelIndex&)));
+                this, SLOT(triggerItem(const QModelIndex&)));
     }
     connect(this, SIGNAL(entered(const QModelIndex&)),
             this, SLOT(slotEntered(const QModelIndex&)));
@@ -95,6 +99,8 @@ DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* contr
             this, SLOT(zoomIn()));
     connect(controller, SIGNAL(zoomOut()),
             this, SLOT(zoomOut()));
+    connect(controller->dolphinView(), SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
+            this, SLOT(updateColumnVisibility()));
 
     // apply the details mode settings to the widget
     const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
@@ -118,6 +124,8 @@ DolphinDetailsView::DolphinDetailsView(QWidget* parent, DolphinController* contr
 #endif
 
     updateDecorationSize();
+
+    setFocus();
 }
 
 DolphinDetailsView::~DolphinDetailsView()
@@ -127,37 +135,11 @@ DolphinDetailsView::~DolphinDetailsView()
 bool DolphinDetailsView::event(QEvent* event)
 {
     if (event->type() == QEvent::Polish) {
-        // Assure that by respecting the available width that:
-        // - the 'Name' column is stretched as large as possible
-        // - the remaining columns are as small as possible
         QHeaderView* headerView = header();
-        headerView->setStretchLastSection(false);
-        headerView->setResizeMode(QHeaderView::ResizeToContents);
-        headerView->setResizeMode(0, QHeaderView::Stretch);
+        headerView->setResizeMode(QHeaderView::Fixed);
         headerView->setMovable(false);
 
-        // hide columns if this is indicated by the settings
-        const DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
-        Q_ASSERT(settings != 0);
-        if (!settings->showDate()) {
-            hideColumn(DolphinModel::ModifiedTime);
-        }
-
-        if (!settings->showPermissions()) {
-            hideColumn(DolphinModel::Permissions);
-        }
-
-        if (!settings->showOwner()) {
-            hideColumn(DolphinModel::Owner);
-        }
-
-        if (!settings->showGroup()) {
-            hideColumn(DolphinModel::Group);
-        }
-
-        if (!settings->showType()) {
-            hideColumn(DolphinModel::Type);
-        }
+        updateColumnVisibility();
 
         hideColumn(DolphinModel::Rating);
         hideColumn(DolphinModel::Tags);
@@ -191,7 +173,7 @@ void DolphinDetailsView::contextMenuEvent(QContextMenuEvent* event)
 
 void DolphinDetailsView::mousePressEvent(QMouseEvent* event)
 {
-    m_controller->triggerActivation();
+    m_controller->requestActivation();
 
     QTreeView::mousePressEvent(event);
 
@@ -231,6 +213,11 @@ void DolphinDetailsView::mouseReleaseEvent(QMouseEvent* event)
     }
 }
 
+void DolphinDetailsView::startDrag(Qt::DropActions supportedActions)
+{
+    DragAndDropHelper::startDrag(this, supportedActions);
+}
+
 void DolphinDetailsView::dragEnterEvent(QDragEnterEvent* event)
 {
     if (event->mimeData()->hasUrls()) {
@@ -264,7 +251,12 @@ void DolphinDetailsView::dragMoveEvent(QDragMoveEvent* event)
         m_dragging = false;
     } else {
         m_dragging = true;
-        m_dropRect = visualRect(index);
+        const KFileItem item = itemForIndex(index);
+        if (!item.isNull() && item.isDir()) {
+            m_dropRect = visualRect(index);
+        } else {
+            m_dropRect.setSize(QSize()); // set as invalid
+        }
         setDirtyRegion(m_dropRect);
     }
 }
@@ -274,10 +266,14 @@ void DolphinDetailsView::dropEvent(QDropEvent* event)
     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
     if (!urls.isEmpty()) {
         event->acceptProposedAction();
+        const QModelIndex index = indexAt(event->pos());
+        KFileItem item;
+        if (index.isValid() && (index.column() == DolphinModel::Name)) {
+            item = itemForIndex(index);
+        }
         m_controller->indicateDroppedUrls(urls,
                                           m_controller->url(),
-                                          indexAt(event->pos()),
-                                          event->source());
+                                          item);
     }
     QTreeView::dropEvent(event);
     m_dragging = false;
@@ -305,7 +301,7 @@ void DolphinDetailsView::paintEvent(QPaintEvent* event)
     // TODO: remove this code when the issue #160611 is solved in Qt 4.4
     if (m_dragging) {
         const QBrush& brush = m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight);
-        DolphinController::drawHoverIndication(viewport(), m_dropRect, brush);
+        DragAndDropHelper::drawHoverIndication(viewport(), m_dropRect, brush);
     }
 }
 
@@ -315,45 +311,32 @@ void DolphinDetailsView::keyPressEvent(QKeyEvent* event)
 
     const QItemSelectionModel* selModel = selectionModel();
     const QModelIndex currentIndex = selModel->currentIndex();
-    const bool triggerItem = currentIndex.isValid()
-                             && (event->key() == Qt::Key_Return)
-                             && (selModel->selectedIndexes().count() <= 1);
-    if (triggerItem) {
-        m_controller->triggerItem(currentIndex);
+    const bool trigger = currentIndex.isValid()
+                         && (event->key() == Qt::Key_Return)
+                         && (selModel->selectedIndexes().count() <= 1);
+    if (trigger) {
+        triggerItem(currentIndex);
     }
 }
 
 void DolphinDetailsView::resizeEvent(QResizeEvent* event)
 {
     QTreeView::resizeEvent(event);
+    resizeColumns();
+}
 
-    // assure that the width of the name-column does not get too small
-    const int minWidth = 120;
-    QHeaderView* headerView = header();
-    bool useFixedWidth = (headerView->sectionSize(KDirModel::Name) <= minWidth)
-                         && (headerView->resizeMode(0) != QHeaderView::Fixed);
-    if (useFixedWidth) {
-        // the current width of the name-column is too small, hence
-        // use a fixed size
-        headerView->setResizeMode(QHeaderView::Fixed);
-        headerView->setResizeMode(0, QHeaderView::Fixed);
-        headerView->resizeSection(KDirModel::Name, minWidth);
-    } else if (headerView->resizeMode(0) != QHeaderView::Stretch) {
-        // check whether there is enough available viewport width
-        // to automatically resize the columns
-        const int availableWidth = viewport()->width();
-
-        int headerWidth = 0;
-        const int count = headerView->count();
-        for (int i = 0; i < count; ++i) {
-            headerWidth += headerView->sectionSize(i);
-        }
-
-        if (headerWidth < availableWidth) {
-            headerView->setResizeMode(QHeaderView::ResizeToContents);
-            headerView->setResizeMode(0, QHeaderView::Stretch);
-        }
+void DolphinDetailsView::closeEvent(QCloseEvent* event)
+{
+    if (m_clearAdditionalInfo) {
+        disconnect(m_controller->dolphinView(), SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
+                this, SLOT(updateColumnVisibility()));
+
+        KFileItemDelegate::InformationList info;
+        info.append(KFileItemDelegate::NoInformation);
+        m_controller->indicateAdditionalInfoChange(info);
+        m_clearAdditionalInfo = false;
     }
+    QTreeView::closeEvent(event);
 }
 
 void DolphinDetailsView::setSortIndicatorSection(DolphinView::Sorting sorting)
@@ -383,7 +366,7 @@ void DolphinDetailsView::slotEntered(const QModelIndex& index)
     const QPoint pos = viewport()->mapFromGlobal(QCursor::pos());
     const int nameColumnWidth = header()->sectionSize(DolphinModel::Name);
     if (pos.x() < nameColumnWidth) {
-        m_controller->emitItemEntered(index);
+        m_controller->emitItemEntered(itemForIndex(index));
     }
     else {
         m_controller->emitViewportEntered();
@@ -399,6 +382,13 @@ void DolphinDetailsView::updateElasticBand()
     setDirtyRegion(dirtyRegion);
 }
 
+QRect DolphinDetailsView::elasticBandRect() const
+{
+    const QPoint pos(contentsPos());
+    const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
+    return QRect(topLeft, m_elasticBandDestination).normalized();
+}
+
 void DolphinDetailsView::zoomIn()
 {
     if (isZoomInPossible()) {
@@ -425,13 +415,14 @@ void DolphinDetailsView::zoomOut()
     }
 }
 
-void DolphinDetailsView::slotItemActivated(const QModelIndex& index)
+void DolphinDetailsView::triggerItem(const QModelIndex& index)
 {
+    const KFileItem item = itemForIndex(index);
     if (index.isValid() && (index.column() == KDirModel::Name)) {
-        m_controller->triggerItem(index);
+        m_controller->triggerItem(item);
     } else {
         clearSelection();
-        m_controller->emitItemEntered(index);
+        m_controller->emitItemEntered(item);
     }
 }
 
@@ -441,7 +432,7 @@ void DolphinDetailsView::configureColumns(const QPoint& pos)
     popup.addTitle(i18nc("@title:menu", "Columns"));
 
     QHeaderView* headerView = header();
-    for (int i = DolphinModel::ModifiedTime; i <= DolphinModel::Type; ++i) {
+    for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
         const int logicalIndex = headerView->logicalIndex(i);
         const QString text = model()->headerData(i, Qt::Horizontal).toString();
         QAction* action = popup.addAction(text);
@@ -453,29 +444,53 @@ void DolphinDetailsView::configureColumns(const QPoint& pos)
     QAction* activatedAction = popup.exec(header()->mapToGlobal(pos));
     if (activatedAction != 0) {
         const bool show = activatedAction->isChecked();
-        DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
-        Q_ASSERT(settings != 0);
-
-        // remember the changed column visibility in the settings
         const int columnIndex = activatedAction->data().toInt();
-        switch (columnIndex) {
-        case DolphinModel::ModifiedTime: settings->setShowDate(show); break;
-        case DolphinModel::Permissions:  settings->setShowPermissions(show); break;
-        case DolphinModel::Owner:        settings->setShowOwner(show); break;
-        case DolphinModel::Group:        settings->setShowGroup(show); break;
-        case DolphinModel::Type:         settings->setShowType(show); break;
-        default: break;
-        }
 
-        // apply the changed column visibility
+        KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
+        const KFileItemDelegate::Information info = infoForColumn(columnIndex);
         if (show) {
-            showColumn(columnIndex);
+            Q_ASSERT(!list.contains(info));
+            list.append(info);
         } else {
-            hideColumn(columnIndex);
+            Q_ASSERT(list.contains(info));
+            const int index = list.indexOf(info);
+            list.removeAt(index);
         }
+
+        m_controller->indicateAdditionalInfoChange(list);
+        setColumnHidden(columnIndex, !show);
     }
 }
 
+void DolphinDetailsView::updateColumnVisibility()
+{
+    KFileItemDelegate::InformationList list = m_controller->dolphinView()->additionalInfo();
+    const bool useDefaultColumns = !isVisible() &&
+                                   (list.isEmpty() ||
+                                    list.contains(KFileItemDelegate::NoInformation));
+    if (useDefaultColumns) {
+        // Using the details view without any additional information (-> additional column)
+        // makes no sense and leads to a usability problem as no viewport area is available
+        // anymore. Hence as fallback provide at least a size and date column.
+        list.clear();
+        list.append(KFileItemDelegate::Size);
+        list.append(KFileItemDelegate::ModificationTime);
+        m_controller->indicateAdditionalInfoChange(list);
+        m_clearAdditionalInfo = true;
+    }
+
+    for (int i = DolphinModel::Size; i <= DolphinModel::Type; ++i) {
+        const KFileItemDelegate::Information info = infoForColumn(i);
+        const bool hide = !list.contains(info);
+        if (isColumnHidden(i) != hide) {
+            setColumnHidden(i, hide);
+            m_clearAdditionalInfo = false;
+        }
+    }
+
+    resizeColumns();
+}
+
 bool DolphinDetailsView::isZoomInPossible() const
 {
     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
@@ -518,16 +533,65 @@ QPoint DolphinDetailsView::contentsPos() const
     return QPoint(0, y);
 }
 
-QRect DolphinDetailsView::elasticBandRect() const
+KFileItem DolphinDetailsView::itemForIndex(const QModelIndex& index) const
 {
-    const QPoint pos(contentsPos());
-    const QPoint topLeft(m_elasticBandOrigin.x() - pos.x(), m_elasticBandOrigin.y() - pos.y());
-    return QRect(topLeft, m_elasticBandDestination).normalized();
+    QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(model());
+    KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
+    const QModelIndex dirIndex = proxyModel->mapToSource(index);
+    return dirModel->itemForIndex(dirIndex);
+}
+
+KFileItemDelegate::Information DolphinDetailsView::infoForColumn(int columnIndex) const
+{
+    KFileItemDelegate::Information info = KFileItemDelegate::NoInformation;
+
+    switch (columnIndex) {
+    case DolphinModel::Size:         info = KFileItemDelegate::Size; break;
+    case DolphinModel::ModifiedTime: info = KFileItemDelegate::ModificationTime; break;
+    case DolphinModel::Permissions:  info = KFileItemDelegate::Permissions; break;
+    case DolphinModel::Owner:        info = KFileItemDelegate::Owner; break;
+    case DolphinModel::Group:        info = KFileItemDelegate::OwnerAndGroup; break;
+    case DolphinModel::Type:         info = KFileItemDelegate::FriendlyMimeType; break;
+    default: break;
+    }
+
+    return info;
 }
 
-static bool isValidNameIndex(const QModelIndex& index)
+void DolphinDetailsView::resizeColumns()
 {
-    return index.isValid() && (index.column() == KDirModel::Name);
+    // Using the resize mode QHeaderView::ResizeToContents is too slow (it takes
+    // around 3 seconds for each (!) resize operation when having > 10000 items).
+    // This gets a problem especially when opening large directories, where several
+    // resize operations are received for showing the currently available items during
+    // loading (the application hangs around 20 seconds when loading > 10000 items).
+
+    QHeaderView* headerView = header();
+    QFontMetrics fontMetrics(viewport()->font());
+
+    int columnWidth[KDirModel::ColumnCount];
+    columnWidth[KDirModel::Size] = fontMetrics.width("00000 Items");
+    columnWidth[KDirModel::ModifiedTime] = fontMetrics.width("0000-00-00 00:00");
+    columnWidth[KDirModel::Permissions] = fontMetrics.width("xxxxxxxxxx");
+    columnWidth[KDirModel::Owner] = fontMetrics.width("xxxxxxxxxx");
+    columnWidth[KDirModel::Group] = fontMetrics.width("xxxxxxxxxx");
+    columnWidth[KDirModel::Type] = fontMetrics.width("XXXX Xxxxxxx");
+
+    int requiredWidth = 0;
+    for (int i = KDirModel::Size; i <= KDirModel::Type; ++i) {
+        if (!isColumnHidden(i)) {
+            columnWidth[i] += 20; // provide a default gap
+            requiredWidth += columnWidth[i];
+            headerView->resizeSection(i, columnWidth[i]);
+        }
+    }
+
+    // resize the name column in a way that the whole available width is used
+    columnWidth[KDirModel::Name] = viewport()->width() - requiredWidth;
+    if (columnWidth[KDirModel::Name] < 120) {
+        columnWidth[KDirModel::Name] = 120;
+    }
+    headerView->resizeSection(KDirModel::Name, columnWidth[KDirModel::Name]);
 }
 
 #include "dolphindetailsview.moc"