]> cloud.milkyroute.net Git - dolphin.git/blobdiff - src/panels/information/informationpanel.cpp
dolphin: convert panels/ and filterbar to qt signal/slot syntax
[dolphin.git] / src / panels / information / informationpanel.cpp
index f15cf05d51cd8fc149d6d84ac86e26626fdbbbe3..4ad1276a52dbdf498d11230c85ee9847f8cfb167 100644 (file)
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2006-2009 by Peter Penz <peter.penz@gmx.at>             *
+ *   Copyright (C) 2006-2009 by Peter Penz <peter.penz19@gmail.com>        *
  *                                                                         *
  *   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  *
  ***************************************************************************/
 
 #include "informationpanel.h"
-#include <kdirnotify.h>
+
+#include "informationpanelcontent.h"
+#include <KIO/Job>
+#include <KIO/JobUiDelegate>
+#include <KJobWidgets>
+#include <KDirNotify>
+#include <QApplication>
 #include <QShowEvent>
 #include <QVBoxLayout>
-#include "informationpanelcontent.h"
+#include <QTimer>
 
 InformationPanel::InformationPanel(QWidget* parent) :
     Panel(parent),
@@ -34,6 +40,7 @@ InformationPanel::InformationPanel(QWidget* parent) :
     m_invalidUrlCandidate(),
     m_fileItem(),
     m_selection(),
+    m_folderStatJob(0),
     m_content(0)
 {
 }
@@ -42,48 +49,15 @@ InformationPanel::~InformationPanel()
 {
 }
 
-QSize InformationPanel::sizeHint() const
-{
-    QSize size = Panel::sizeHint();
-    size.setWidth(minimumSizeHint().width());
-    return size;
-}
-
-void InformationPanel::setUrl(const KUrl& url)
-{
-    Panel::setUrl(url);
-    if (url.isValid() && !isEqualToShownUrl(url)) {
-        if (isVisible()) {
-            cancelRequest();
-            m_shownUrl = url;
-            // Update the content with a delay. This gives
-            // the directory lister the chance to show the content
-            // before expensive operations are done to show
-            // meta information.
-            m_urlChangedTimer->start();
-        } else {
-            m_shownUrl = url;
-        }
-    }
-}
-
 void InformationPanel::setSelection(const KFileItemList& selection)
 {
-    if (!isVisible()) {
-        return;
-    }
+    m_selection = selection;
+    m_fileItem = KFileItem();
 
-    if ((selection.count() == 0) && (m_selection.count() == 0)) {
-        // The selection has not really changed, only the current index.
-        // QItemSelectionModel emits a signal in this case and it is less
-        // expensive doing the check this way instead of patching
-        // DolphinView::emitSelectionChanged().
+    if (!isVisible()) {
         return;
     }
 
-    m_selection = selection;
-    m_fileItem = KFileItem();
-
     const int count = selection.count();
     if (count == 0) {
         if (!isEqualToShownUrl(url())) {
@@ -100,29 +74,60 @@ void InformationPanel::setSelection(const KFileItemList& selection)
 
 void InformationPanel::requestDelayedItemInfo(const KFileItem& item)
 {
-    if (!isVisible()) {
+    if (!isVisible() || (item.isNull() && m_fileItem.isNull())) {
+        return;
+    }
+
+    if (QApplication::mouseButtons() & Qt::LeftButton) {
+        // Ignore the request of an item information when a rubberband
+        // selection is ongoing.
         return;
     }
 
     cancelRequest();
 
-    m_fileItem = KFileItem();
     if (item.isNull()) {
         // The cursor is above the viewport. If files are selected,
         // show information regarding the selection.
         if (m_selection.size() > 0) {
+            m_fileItem = KFileItem();
             m_infoTimer->start();
         }
-    } else {
-        const KUrl url = item.url();
-        if (url.isValid() && !isEqualToShownUrl(url)) {
-            m_urlCandidate = item.url();
-            m_fileItem = item;
-            m_infoTimer->start();
-        }
+    } else if (item.url().isValid() && !isEqualToShownUrl(item.url())) {
+        // The cursor is above an item that is not shown currently
+        m_urlCandidate = item.url();
+        m_fileItem = item;
+        m_infoTimer->start();
     }
 }
 
+bool InformationPanel::urlChanged()
+{
+    if (!url().isValid()) {
+        return false;
+    }
+
+    if (!isVisible()) {
+        return true;
+    }
+
+    cancelRequest();
+    m_selection.clear();
+
+    if (!isEqualToShownUrl(url())) {
+        m_shownUrl = url();
+        m_fileItem = KFileItem();
+
+        // Update the content with a delay. This gives
+        // the directory lister the chance to show the content
+        // before expensive operations are done to show
+        // meta information.
+        m_urlChangedTimer->start();
+    }
+
+    return true;
+}
+
 void InformationPanel::showEvent(QShowEvent* event)
 {
     Panel::showEvent(event);
@@ -133,6 +138,8 @@ void InformationPanel::showEvent(QShowEvent* event)
             // Information Panel
             init();
         }
+
+        m_shownUrl = url();
         showItemInfo();
     }
 }
@@ -148,7 +155,8 @@ void InformationPanel::resizeEvent(QResizeEvent* event)
 
 void InformationPanel::contextMenuEvent(QContextMenuEvent* event)
 {
-    m_content->configureSettings();
+    // TODO: Move code from InformationPanelContent::configureSettings() here
+    m_content->configureSettings(customContextMenuActions());
     Panel::contextMenuEvent(event);
 }
 
@@ -160,30 +168,45 @@ void InformationPanel::showItemInfo()
 
     cancelRequest();
 
-    if (showMultipleSelectionInfo()) {
+    if (m_fileItem.isNull() && (m_selection.count() > 1)) {
+        // The information for a selection of items should be shown
         m_content->showItems(m_selection);
-        m_shownUrl = KUrl();
     } else {
+        // The information for exactly one item should be shown
         KFileItem item;
         if (!m_fileItem.isNull()) {
             item = m_fileItem;
         } else if (!m_selection.isEmpty()) {
             Q_ASSERT(m_selection.count() == 1);
             item = m_selection.first();
-        } else {
-            // no item is hovered and no selection has been done: provide
-            // an item for the directory represented by m_shownUrl
-            item = KFileItem(KFileItem::Unknown, KFileItem::Unknown, m_shownUrl);
-            item.refresh();
         }
 
-        m_content->showItem(item);
+        if (item.isNull()) {
+            // No item is hovered and no selection has been done: provide
+            // an item for the currently shown directory.
+            m_folderStatJob = KIO::stat(url(), KIO::HideProgressInfo);
+            if (m_folderStatJob->ui()) {
+                KJobWidgets::setWindow(m_folderStatJob, this);
+            }
+            connect(m_folderStatJob, &KIO::Job::result,
+                    this, &InformationPanel::slotFolderStatFinished);
+        } else {
+            m_content->showItem(item);
+        }
     }
 }
 
+void InformationPanel::slotFolderStatFinished(KJob* job)
+{
+    m_folderStatJob = 0;
+    const KIO::UDSEntry entry = static_cast<KIO::StatJob*>(job)->statResult();
+    m_content->showItem(KFileItem(entry, m_shownUrl));
+}
+
 void InformationPanel::slotInfoTimeout()
 {
     m_shownUrl = m_urlCandidate;
+    m_urlCandidate.clear();
     showItemInfo();
 }
 
@@ -272,12 +295,17 @@ void InformationPanel::slotLeftDirectory(const QString& directory)
 
 void InformationPanel::cancelRequest()
 {
+    delete m_folderStatJob;
+    m_folderStatJob = 0;
+
     m_infoTimer->stop();
-}
+    m_resetUrlTimer->stop();
+    // Don't reset m_urlChangedTimer. As it is assured that the timeout of m_urlChangedTimer
+    // has the smallest interval (see init()), it is not possible that the exceeded timer
+    // would overwrite an information provided by a selection or hovering.
 
-bool InformationPanel::showMultipleSelectionInfo() const
-{
-    return m_fileItem.isNull() && (m_selection.count() > 1);
+    m_invalidUrlCandidate.clear();
+    m_urlCandidate.clear();
 }
 
 bool InformationPanel::isEqualToShownUrl(const KUrl& url) const
@@ -293,39 +321,41 @@ void InformationPanel::markUrlAsInvalid()
 
 void InformationPanel::init()
 {
-    const int defaultDelay = 300;
-
     m_infoTimer = new QTimer(this);
-    m_infoTimer->setInterval(defaultDelay);
+    m_infoTimer->setInterval(300);
     m_infoTimer->setSingleShot(true);
-    connect(m_infoTimer, SIGNAL(timeout()),
-            this, SLOT(slotInfoTimeout()));
+    connect(m_infoTimer, &QTimer::timeout,
+            this, &InformationPanel::slotInfoTimeout);
 
     m_urlChangedTimer = new QTimer(this);
-    m_urlChangedTimer->setInterval(defaultDelay);
+    m_urlChangedTimer->setInterval(200);
     m_urlChangedTimer->setSingleShot(true);
-    connect(m_urlChangedTimer, SIGNAL(timeout()),
-            this, SLOT(showItemInfo()));
+    connect(m_urlChangedTimer, &QTimer::timeout,
+            this, &InformationPanel::showItemInfo);
 
     m_resetUrlTimer = new QTimer(this);
-    m_resetUrlTimer->setInterval(defaultDelay * 3);
+    m_resetUrlTimer->setInterval(1000);
     m_resetUrlTimer->setSingleShot(true);
-    connect(m_resetUrlTimer, SIGNAL(timeout()),
-            this, SLOT(reset()));
+    connect(m_resetUrlTimer, &QTimer::timeout,
+            this, &InformationPanel::reset);
+
+    Q_ASSERT(m_urlChangedTimer->interval() < m_infoTimer->interval());
+    Q_ASSERT(m_urlChangedTimer->interval() < m_resetUrlTimer->interval());
 
     org::kde::KDirNotify* dirNotify = new org::kde::KDirNotify(QString(), QString(),
                                                                QDBusConnection::sessionBus(), this);
-    connect(dirNotify, SIGNAL(FileRenamed(QString, QString)), SLOT(slotFileRenamed(QString, QString)));
-    connect(dirNotify, SIGNAL(FilesAdded(QString)), SLOT(slotFilesAdded(QString)));
-    connect(dirNotify, SIGNAL(FilesChanged(QStringList)), SLOT(slotFilesChanged(QStringList)));
-    connect(dirNotify, SIGNAL(FilesRemoved(QStringList)), SLOT(slotFilesRemoved(QStringList)));
-    connect(dirNotify, SIGNAL(enteredDirectory(QString)), SLOT(slotEnteredDirectory(QString)));
-    connect(dirNotify, SIGNAL(leftDirectory(QString)), SLOT(slotLeftDirectory(QString)));
+    connect(dirNotify, &OrgKdeKDirNotifyInterface::FileRenamed, this, &InformationPanel::slotFileRenamed);
+    connect(dirNotify, &OrgKdeKDirNotifyInterface::FilesAdded, this, &InformationPanel::slotFilesAdded);
+    connect(dirNotify, &OrgKdeKDirNotifyInterface::FilesChanged, this, &InformationPanel::slotFilesChanged);
+    connect(dirNotify, &OrgKdeKDirNotifyInterface::FilesRemoved, this, &InformationPanel::slotFilesRemoved);
+    connect(dirNotify, &OrgKdeKDirNotifyInterface::enteredDirectory, this, &InformationPanel::slotEnteredDirectory);
+    connect(dirNotify, &OrgKdeKDirNotifyInterface::leftDirectory, this, &InformationPanel::slotLeftDirectory);
 
     m_content = new InformationPanelContent(this);
-    connect(m_content, SIGNAL(urlActivated(KUrl)), this, SIGNAL(urlActivated(KUrl)));
-    
+    connect(m_content, &InformationPanelContent::urlActivated, this, &InformationPanel::urlActivated);
+
     QVBoxLayout* layout = new QVBoxLayout(this);
+    layout->setContentsMargins(0, 0, 0, 0);
     layout->addWidget(m_content);
 
     m_initialized = true;