Fixed bad behaviour of QWebPage on leaveEvent.

- when leaving web widget, QWebPagePrivate generates fake
  mouse move event, but unfortunately with bad coordinates.
  So sometimes it just hovered a link and the link's url got
  stuck in status bar message.

src/lib/3rdparty/lineedit.cpp

@@ -162,7 +162,7 @@ void LineEdit::updateTextMargins()
     else {
         left = m_leftMargin;
     }
-    int right = textMargin(LineEdit::RightSide);
+    int right = textMargin(LineEdit::RightSide) + 3;
     int top = 0;
     int bottom = 0;
     setTextMargins(left, top, right, bottom);

src/lib/3rdparty/lineedit.h

@@ -71,13 +71,13 @@ public:
 
     void setLeftMargin(int margin);
 
+public slots:
+    void updateTextMargins();
+
 protected:
     void resizeEvent(QResizeEvent* event);
     bool event(QEvent* event);
 
-protected slots:
-    void updateTextMargins();
-
 private:
     void init();
     void updateSideWidgetLocations();

src/lib/navigation/locationbar.cpp

@@ -150,6 +150,8 @@ void LocationBar::showGoButton()
     m_bookmarkIcon->hide();
     m_rssIcon->hide();
     m_goIcon->show();
+
+    updateTextMargins();
 }
 
 void LocationBar::hideGoButton()
@@ -161,6 +163,8 @@ void LocationBar::hideGoButton()
     m_rssIcon->setVisible(m_rssIconVisible);
     m_bookmarkIcon->show();
     m_goIcon->hide();
+
+    updateTextMargins();
 }
 
 void LocationBar::showMostVisited()
@@ -172,6 +176,7 @@ void LocationBar::showMostVisited()
         QKeyEvent event(QEvent::KeyPress, Qt::Key_unknown, Qt::NoModifier, QString(" "));
         keyPressEvent(&event);
     }
+
     m_locationCompleter->showMostVisited();
 }
 
@@ -196,6 +201,8 @@ void LocationBar::rssIconClicked()
 void LocationBar::showRSSIcon(bool state)
 {
     m_rssIcon->setVisible(state);
+
+    updateTextMargins();
 }
 
 void LocationBar::showUrl(const QUrl &url)

src/lib/other/sourceviewer.cpp

@@ -31,12 +31,12 @@
 #include <QMessageBox>
 #include <QInputDialog>
 #include <QWebFrame>
-
-#include <QTextEdit>
+#include <QTimer>
 
 SourceViewer::SourceViewer(QWebFrame* frame, const QString &selectedHtml)
     : QWidget(0)
     , m_frame(frame)
+    , m_selectedHtml(selectedHtml)
 {
     setAttribute(Qt::WA_DeleteOnClose);
     setWindowTitle(tr("Source of ") + frame->url().toString());
@@ -72,13 +72,12 @@ SourceViewer::SourceViewer(QWebFrame* frame, const QString &selectedHtml)
     menuBar->addMenu(menuFile);
 
     QMenu* menuEdit = new QMenu(tr("Edit"));
-    menuEdit->addAction(QIcon::fromTheme("edit-undo"), tr("Undo"), m_sourceEdit, SLOT(undo()))->setShortcut(QKeySequence("Ctrl+Z"));
-    menuEdit->addAction(QIcon::fromTheme("edit-redo"), tr("Redo"), m_sourceEdit, SLOT(redo()))->setShortcut(QKeySequence("Ctrl+Shift+Z"));
+    m_actionUndo = menuEdit->addAction(QIcon::fromTheme("edit-undo"), tr("Undo"), m_sourceEdit, SLOT(undo()));
+    m_actionRedo = menuEdit->addAction(QIcon::fromTheme("edit-redo"), tr("Redo"), m_sourceEdit, SLOT(redo()));
     menuEdit->addSeparator();
-    menuEdit->addAction(QIcon::fromTheme("edit-cut"), tr("Cut"), m_sourceEdit, SLOT(cut()))->setShortcut(QKeySequence("Ctrl+X"));
-    menuEdit->addAction(QIcon::fromTheme("edit-copy"), tr("Copy"), m_sourceEdit, SLOT(copy()))->setShortcut(QKeySequence("Ctrl+C"));
-    menuEdit->addAction(QIcon::fromTheme("edit-paste"), tr("Paste"), m_sourceEdit, SLOT(paste()))->setShortcut(QKeySequence("Ctrl+V"));
-    menuEdit->addAction(QIcon::fromTheme("edit-delete"), tr("Delete"))->setShortcut(QKeySequence("Del"));
+    m_actionCut = menuEdit->addAction(QIcon::fromTheme("edit-cut"), tr("Cut"), m_sourceEdit, SLOT(cut()));
+    m_actionCopy = menuEdit->addAction(QIcon::fromTheme("edit-copy"), tr("Copy"), m_sourceEdit, SLOT(copy()));
+    m_actionPaste = menuEdit->addAction(QIcon::fromTheme("edit-paste"), tr("Paste"), m_sourceEdit, SLOT(paste()));
     menuEdit->addSeparator();
     menuEdit->addAction(QIcon::fromTheme("edit-select-all"), tr("Select All"), m_sourceEdit, SLOT(selectAll()))->setShortcut(QKeySequence("Ctrl+A"));
     menuEdit->addAction(QIcon::fromTheme("edit-find"), tr("Find"), this, SLOT(findText()))->setShortcut(QKeySequence("Ctrl+F"));
@@ -86,6 +85,12 @@ SourceViewer::SourceViewer(QWebFrame* frame, const QString &selectedHtml)
     menuEdit->addAction(QIcon::fromTheme("go-jump"), tr("Go to Line..."), this, SLOT(goToLine()))->setShortcut(QKeySequence("Ctrl+L"));
     menuBar->addMenu(menuEdit);
 
+    m_actionUndo->setShortcut(QKeySequence("Ctrl+Z"));
+    m_actionRedo->setShortcut(QKeySequence("Ctrl+Shift+Z"));
+    m_actionCut->setShortcut(QKeySequence("Ctrl+X"));
+    m_actionCopy->setShortcut(QKeySequence("Ctrl+C"));
+    m_actionPaste->setShortcut(QKeySequence("Ctrl+V"));
+
     QMenu* menuView = new QMenu(tr("View"));
     menuView->addAction(IconProvider::standardIcon(QStyle::SP_BrowserReload), tr("Reload"), this, SLOT(reload()))->setShortcut(QKeySequence("F5"));
     menuView->addSeparator();
@@ -96,11 +101,48 @@ SourceViewer::SourceViewer(QWebFrame* frame, const QString &selectedHtml)
 
     qz_centerWidgetToParent(this, frame->page()->view());
 
-    m_sourceEdit->setPlainText(frame->toHtml());
+    connect(m_sourceEdit, SIGNAL(copyAvailable(bool)), this, SLOT(copyAvailable(bool)));
+    connect(m_sourceEdit, SIGNAL(redoAvailable(bool)), this, SLOT(redoAvailable(bool)));
+    connect(m_sourceEdit, SIGNAL(undoAvailable(bool)), this, SLOT(undoAvailable(bool)));
+    connect(menuEdit, SIGNAL(aboutToShow()), this, SLOT(pasteAvailable()));
+
+    QTimer::singleShot(0, this, SLOT(loadSource()));
+}
+
+void SourceViewer::copyAvailable(bool yes)
+{
+    m_actionCopy->setEnabled(yes);
+    m_actionCut->setEnabled(yes);
+}
+
+void SourceViewer::redoAvailable(bool available)
+{
+    m_actionRedo->setEnabled(available);
+}
+
+void SourceViewer::undoAvailable(bool available)
+{
+    m_actionUndo->setEnabled(available);
+}
+
+void SourceViewer::pasteAvailable()
+{
+    m_actionPaste->setEnabled(m_sourceEdit->canPaste());
+}
+
+void SourceViewer::loadSource()
+{
+    m_actionUndo->setEnabled(false);
+    m_actionRedo->setEnabled(false);
+    m_actionCut->setEnabled(false);
+    m_actionCopy->setEnabled(false);
+    m_actionPaste->setEnabled(false);
+
+    m_sourceEdit->setPlainText(m_frame.data()->toHtml());
 
     //Highlight selectedHtml
-    if (!selectedHtml.isEmpty()) {
-        m_sourceEdit->find(selectedHtml, QTextDocument::FindWholeWords);
+    if (!m_selectedHtml.isEmpty()) {
+        m_sourceEdit->find(m_selectedHtml, QTextDocument::FindWholeWords);
     }
     else {
         m_sourceEdit->moveCursor(QTextCursor::Start);

src/lib/other/sourceviewer.h

@@ -36,11 +36,13 @@ public:
     explicit SourceViewer(QWebFrame* frame, const QString &selectedHtml);
     PlainEditWithLines* sourceEdit() { return m_sourceEdit; }
 
-signals:
-
-public slots:
-
 private slots:
+    void copyAvailable(bool yes);
+    void redoAvailable(bool available);
+    void undoAvailable(bool available);
+    void pasteAvailable();
+
+    void loadSource();
     void save();
     void findText();
     void reload();
@@ -53,6 +55,14 @@ private:
     PlainEditWithLines* m_sourceEdit;
     QWeakPointer<QWebFrame> m_frame;
     QStatusBar* m_statusBar;
+
+    QString m_selectedHtml;
+
+    QAction* m_actionUndo;
+    QAction* m_actionRedo;
+    QAction* m_actionCut;
+    QAction* m_actionCopy;
+    QAction* m_actionPaste;
 };
 
 #endif // SOURCEVIEWER_H

src/lib/other/statusbarmessage.cpp

@@ -30,7 +30,6 @@
 
 TipLabel::TipLabel(QWidget* parent)
     : SqueezeLabelV1(parent)
-    , p_QupZilla(0)
     , m_connected(false)
 {
     setWindowFlags(Qt::ToolTip);
@@ -44,21 +43,6 @@ TipLabel::TipLabel(QWidget* parent)
     qApp->installEventFilter(this);
 }
 
-void TipLabel::setMainWindow(QupZilla* main)
-{
-    p_QupZilla = main;
-}
-
-void TipLabel::show()
-{
-    if (p_QupZilla && !m_connected) {
-        connect(p_QupZilla->tabWidget(), SIGNAL(currentChanged(int)), this, SLOT(hide()));
-        m_connected = true;
-    }
-
-    SqueezeLabelV1::show();
-}
-
 void TipLabel::paintEvent(QPaintEvent* ev)
 {
     QStylePainter p(this);
@@ -97,7 +81,6 @@ StatusBarMessage::StatusBarMessage(QupZilla* mainClass)
     : p_QupZilla(mainClass)
     , m_statusBarText(new TipLabel(mainClass))
 {
-    m_statusBarText->setMainWindow(p_QupZilla);
 }
 
 void StatusBarMessage::showMessage(const QString &message)
@@ -128,10 +111,8 @@ void StatusBarMessage::showMessage(const QString &message)
         m_statusBarText->setMaximumWidth(view->width() - verticalScrollSize);
         m_statusBarText->resize(m_statusBarText->sizeHint());
 
-        QPoint position;
-        position.setY(view->height() - horizontalScrollSize - m_statusBarText->height());
-
-        QRect statusRect = QRect(view->mapToGlobal(QPoint(0, position.y())), m_statusBarText->size());
+        QPoint position(0, view->height() - horizontalScrollSize - m_statusBarText->height());
+        const QRect &statusRect = QRect(view->mapToGlobal(QPoint(0, position.y())), m_statusBarText->size());
 
         if (statusRect.contains(QCursor::pos())) {
             position.setY(position.y() - m_statusBarText->height());

src/lib/other/statusbarmessage.h

@@ -31,10 +31,7 @@ class QT_QUPZILLA_EXPORT TipLabel : public SqueezeLabelV1
 public:
     TipLabel(QWidget* parent);
 
-    void setMainWindow(QupZilla* main);
-
     bool eventFilter(QObject* o, QEvent* e);
-    void show();
 
 private:
     void paintEvent(QPaintEvent* ev);

src/lib/webview/webpage.cpp

@@ -294,6 +294,30 @@ void WebPage::featurePermissionRequested(QWebFrame* frame, const QWebPage::Featu
 }
 #endif
 
+bool WebPage::event(QEvent *event)
+{
+    if (event->type() == QEvent::Leave) {
+        // QWebPagePrivate::leaveEvent():
+        // Fake a mouse move event just outside of the widget, since all
+        // the interesting mouse-out behavior like invalidating scrollbars
+        // is handled by the WebKit event handler's mouseMoved function.
+
+        // However, its implementation fake mouse move event on QCursor::pos()
+        // position that is in global screen coordinates. So instead of
+        // really faking it, it just creates mouse move event somewhere in
+        // page. It can for example focus a link, and then link url gets
+        // stuck in status bar message.
+
+        // So we are faking mouse move event with proper coordinates for
+        // so called "just outside of the widget" position
+
+        QMouseEvent fakeEvent(QEvent::MouseMove, QPoint(0, -1), Qt::NoButton, Qt::NoButton, Qt::NoModifier);
+        return QWebPage::event(&fakeEvent);
+    }
+
+    return QWebPage::event(event);
+}
+
 void WebPage::setSSLCertificate(const QSslCertificate &cert)
 {
     //    if (cert != m_SslCert)

src/lib/webview/webpage.h

@@ -95,6 +95,7 @@ private slots:
 #endif
 
 protected:
+    bool event(QEvent* event);
     QWebPage* createWindow(QWebPage::WebWindowType type);
 
 private: