React to externally left and joined rooms, and add "leave room" button in room menu (#75)

* Initial "join room" feature.
* React correctly to remotely joined rooms.
* Leaving rooms implemented both locally using the room menu
   in nheko, and reacting properly when leaving a room remotely 
   from another client.

1 files changed, 44 insertions, 0 deletions

diff --git a/src/LeaveRoomDialog.cc b/src/LeaveRoomDialog.cc
new file mode 100644

index 00000000..f7669f0d
--- /dev/null
+++ b/src/LeaveRoomDialog.cc
@@ -0,0 +1,44 @@
+#include <QLabel>
+#include <QVBoxLayout>
+
+#include "Config.h"
+#include "LeaveRoomDialog.h"
+#include "Theme.h"
+
+LeaveRoomDialog::LeaveRoomDialog(QWidget *parent)
+  : QFrame(parent)
+{
+        setMaximumSize(400, 400);
+        setStyleSheet("background-color: #fff");
+
+        auto layout = new QVBoxLayout(this);
+        layout->setSpacing(30);
+        layout->setMargin(20);
+
+        auto buttonLayout = new QHBoxLayout();
+        buttonLayout->setSpacing(0);
+        buttonLayout->setMargin(0);
+
+        confirmBtn_ = new FlatButton("LEAVE", this);
+        confirmBtn_->setFontSize(conf::btn::fontSize);
+
+        cancelBtn_ = new FlatButton(tr("CANCEL"), this);
+        cancelBtn_->setFontSize(conf::btn::fontSize);
+
+        buttonLayout->addStretch(1);
+        buttonLayout->addWidget(confirmBtn_);
+        buttonLayout->addWidget(cancelBtn_);
+
+        QFont font;
+        font.setPixelSize(conf::headerFontSize);
+
+        auto label = new QLabel(tr("Are you sure you want to leave?"), this);
+        label->setFont(font);
+        label->setStyleSheet("color: #333333");
+
+        layout->addWidget(label);
+        layout->addLayout(buttonLayout);
+
+        connect(confirmBtn_, &QPushButton::clicked, [=]() { emit closing(true); });
+        connect(cancelBtn_, &QPushButton::clicked, [=]() { emit closing(false); });
+}