Qt: fix time shift

Add a timeShifted signal to TimeShiftDialog and use it to update the
packet list and model. Add drawCurrentPacket to PacketList so that we
can do a more thorough job of redrawing the current packet and tree.

Bug: 11575
Change-Id: I960d8cdbf6872e3f71007cb4d2bbd5457f268257
Reviewed-on: https://code.wireshark.org/review/11068
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Gerald Combs <gerald@wireshark.org>

ui/qt/main_window_slots.cpp

@@ -1972,6 +1972,7 @@ void MainWindow::on_actionEditTimeShift_triggered()
     TimeShiftDialog ts_dialog(this, capture_file_.capFile());
     connect(this, SIGNAL(setCaptureFile(capture_file*)),
             &ts_dialog, SLOT(setCaptureFile(capture_file*)));
+    connect(&ts_dialog, SIGNAL(timeShifted()), packet_list_, SLOT(applyTimeShift()));
     ts_dialog.exec();
 }
 

ui/qt/packet_list.cpp

@@ -615,18 +615,22 @@ void PacketList::initHeaderContextMenu()
     }
 }
 
+void PacketList::drawCurrentPacket()
+{
+    QModelIndex current_index = currentIndex();
+    setCurrentIndex(QModelIndex());
+    if (current_index.isValid()) {
+        setCurrentIndex(current_index);
+    }
+}
+
 // Redraw the packet list and detail. Called from many places.
 // XXX We previously re-selected the packet here, but that seems to cause
 // automatic scrolling problems.
 void PacketList::redrawVisiblePackets() {
-    if (!cap_file_) return;
-
-    if (cap_file_->edt && cap_file_->edt->tree) {
-        proto_tree_->fillProtocolTree(cap_file_->edt->tree);
-    }
-
     update();
     header()->update();
+    drawCurrentPacket();
 }
 
 // prefs.col_list has changed.
@@ -1067,6 +1071,13 @@ void PacketList::unsetAllTimeReferences()
     create_far_overlay_ = true;
 }
 
+void PacketList::applyTimeShift()
+{
+    packet_list_model_->applyTimeShift();
+    redrawVisiblePackets();
+    // XXX emit packetDissectionChanged(); ?
+}
+
 void PacketList::showHeaderMenu(QPoint pos)
 {
     header_ctx_column_ = header()->logicalIndexAt(pos);

ui/qt/packet_list.h

@@ -122,6 +122,7 @@ private:
     void setColumnVisibility();
     int sizeHintForColumn(int column) const;
     void initHeaderContextMenu();
+    void drawCurrentPacket();
 
 signals:
     void packetDissectionChanged();
@@ -147,6 +148,7 @@ public slots:
     void ignoreAllDisplayedFrames(bool set);
     void setTimeReference();
     void unsetAllTimeReferences();
+    void applyTimeShift();
     void redrawVisiblePackets();
     void columnsChanged();
     void fieldsChanged(capture_file *cf);

ui/qt/packet_list_model.cpp

@@ -244,6 +244,12 @@ void PacketListModel::unsetAllFrameRefTime()
     dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
 }
 
+void PacketListModel::applyTimeShift()
+{
+    resetColumns();
+    dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
+}
+
 void PacketListModel::setMaximiumRowHeight(int height)
 {
     max_row_height_ = height;

ui/qt/packet_list_model.h

@@ -72,6 +72,7 @@ public:
     void setDisplayedFrameIgnore(gboolean set);
     void toggleFrameRefTime(const QModelIndex &rt_index);
     void unsetAllFrameRefTime();
+    void applyTimeShift();
 
     void setMaximiumRowHeight(int height);
 

ui/qt/time_shift_dialog.cpp

@@ -262,7 +262,13 @@ void TimeShiftDialog::applyTimeShift()
     } else if (ts_ui_->unshiftAllButton->isChecked()) {
         err_str = time_shift_undo(cap_file_);
     }
-    if (err_str) syntax_err_ = err_str;
+
+    if (err_str) {
+        syntax_err_ = err_str;
+    } else {
+        emit timeShifted();
+    }
+
     enableWidgets();
 }
 

ui/qt/time_shift_dialog.h

@@ -48,6 +48,9 @@ public:
 public slots:
     void setCaptureFile(capture_file *cf) { cap_file_ = cf; }
 
+signals:
+    void timeShifted();
+
 private:
     Ui::TimeShiftDialog *ts_ui_;
     capture_file *cap_file_;