From fe2054a73c74b4462c1c528750223b01a6df5f9d Mon Sep 17 00:00:00 2001
From: Christian Klinger
Date: Wed, 1 Jun 2016 10:33:41 +0200
Subject: left/right buttons work globally.

---
 src/dialog.cpp | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 51 insertions(+), 5 deletions(-)

(limited to 'src/dialog.cpp')

diff --git a/src/dialog.cpp b/src/dialog.cpp
index 0b7fa48..0a34f6c 100644
--- a/src/dialog.cpp
+++ b/src/dialog.cpp
@@ -20,6 +20,8 @@
 #include "vsession.h"
 #include "choosersettings.h"
 
+#define UNUSED(x) (void)(x)
+
 Dialog::Dialog(int defaultTab, QWidget *parent)
     : QDialog(parent), ui(new Ui::Dialog) {
     model_[0] = new SessionTreeModel(parent);
@@ -70,6 +72,8 @@ Dialog::Dialog(int defaultTab, QWidget *parent)
     ui->buttonBugReport->setEnabled(false);
     QObject::connect(SessionsIconHolder::get(), SIGNAL(iconDownloaded(const QUrl&, const QIcon&)),
             this, SLOT(iconDownloaded(const QUrl&, const QIcon&)));
+
+    ui->treeView->installEventFilter(this);
 }
 
 Dialog::~Dialog() {
@@ -465,10 +469,14 @@ void Dialog::onTabButtonChanged(int tab) {
     // load the new list
     setListModel(model_[tab]);
     this->activeTab_ = tab;
-    ui->treeView->selectionModel()->clear();
-    ui->treeView->selectionModel()->clearSelection();
-    ui->treeView->selectionModel()->select(ui->treeView->model()->index(0, 0, ui->treeView->rootIndex()), QItemSelectionModel::Select);
-    ui->treeView->selectionModel()->setCurrentIndex(ui->treeView->model()->index(0, 0, ui->treeView->rootIndex()), QItemSelectionModel::Select);
+
+    /* get the first element ad select it */
+    QModelIndex root(ui->treeView->rootIndex());
+    QModelIndex section(model_[tab]->index(0, 0, root));
+    QModelIndex element(model_[tab]->index(0, 0, section));
+    ui->treeView->selectionModel()->setCurrentIndex(element, QItemSelectionModel::Select);
+    ui->treeView->setFocus(Qt::OtherFocusReason);
+
 }
 
 void Dialog::on_filterEdit_textEdited() {
@@ -658,11 +666,13 @@ void Dialog::addHelpAfterDownload(QNetworkReply* reply) {
 }
 
 void Dialog::keyPressEvent(QKeyEvent* event) {
+    qDebug() << "key pressed: " << event;
     switch(event->key()) {
     case Qt::Key_Return:    this->on_pushButtonStart_clicked(); break;
     case Qt::Key_Escape:    this->on_pushButtonAbort_clicked(); break;
-    case Qt::Key_H:        this->on_helpNewsButton_clicked(); break;
+    case Qt::Key_H:         this->on_helpNewsButton_clicked(); break;
     }
+    QDialog::keyPressEvent(event);
 }
 
 void Dialog::iconDownloaded(const QUrl& url, const QIcon&) {
@@ -672,3 +682,39 @@ void Dialog::iconDownloaded(const QUrl& url, const QIcon&) {
     model_[TAB_ALL_VMS]->updateView();
 }
 
+void Dialog::on_leftButton() {
+    qDebug() << "Left Button";
+    int i = activeTab_;
+    do {
+        i = (i - 1 + TAB_COUNT) % TAB_COUNT;
+    } while (!tabs_[i]->isEnabled());
+    onTabButtonChanged(i);
+}
+
+void Dialog::on_rightButton() {
+    qDebug() << "Right Button";
+    int i = activeTab_;
+    do {
+        i = (i + 1) % TAB_COUNT;
+    } while (!tabs_[i]->isEnabled());
+    onTabButtonChanged(i);
+}
+
+/* install this event filter to the treeView to receive Left/Right button
+ * presses. (Usually treeView consumes left/right to use them as collapse/expand
+ * shortcuts */
+bool Dialog::eventFilter(QObject* target, QEvent *event) {
+     if (event->type() == QEvent::KeyPress) {
+            QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
+            if (keyEvent->key() == Qt::Key_Left) {
+                on_leftButton();
+                return true; /* drop this event */
+            } else if (keyEvent->key() == Qt::Key_Right) {
+                on_rightButton();
+                return true;
+            } else if (keyEvent->key() == Qt::Key_Space) {
+                qDebug() << "space button";
+            }
+     }
+     return QDialog::eventFilter(target, event);
+}
-- 
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