Reworked notification code in system tray.

Added a base class and a possibility for the main dialogs and the plugins (derived from MainPage) to provide a notifier.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@5381 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/common/UserNotify.cpp

@@ -0,0 +1,94 @@
+#include <QMenu>
+#include "UserNotify.h"
+
+UserNotify::UserNotify(QObject *parent) :
+	QObject(parent)
+{
+	mMainIcon = NULL;
+	mTrayIcon = NULL;
+	mNotifyIcon = NULL;
+	newCount = 0;
+}
+
+void UserNotify::initialize(QAction *mainAction)
+{
+	mMainIcon = mainAction;
+}
+
+void UserNotify::createIcons(QMenu *notifyMenu)
+{
+#define DELETE_OBJECT(x) if (x) { delete(x); x = NULL; }
+
+	/* Create systray icons or actions */
+	if (notifyEnabled()) {
+		if (notifyCombined()) {
+			DELETE_OBJECT(mTrayIcon);
+
+			if (mNotifyIcon == NULL) {
+				mNotifyIcon = notifyMenu->addAction(getIcon(), "", this, SLOT(trayIconClicked()));
+				mNotifyIcon->setVisible(false);
+			}
+		} else if (mTrayIcon == NULL) {
+			/* Create the tray icon for messages */
+			mTrayIcon = new QSystemTrayIcon(this);
+			mTrayIcon->setIcon(getIcon());
+			connect(mTrayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)), this, SLOT(trayIconClicked(QSystemTrayIcon::ActivationReason)));
+		}
+	} else {
+		DELETE_OBJECT(mTrayIcon);
+		DELETE_OBJECT(mNotifyIcon);
+	}
+
+#undef DELETE_OBJECT
+}
+
+void UserNotify::updateIcon()
+{
+	unsigned int count = getNewCount();
+
+	if (mMainIcon) {
+		mMainIcon->setIcon(getMainIcon(count > 0));
+	}
+
+	if (mTrayIcon) {
+		if (count) {
+			mTrayIcon->setToolTip("RetroShare\n" + getTrayMessage(count > 1).arg(count));
+			mTrayIcon->show();
+		} else {
+			mTrayIcon->hide();
+		}
+	}
+
+	if (mNotifyIcon) {
+		mNotifyIcon->setData(count);
+		if (count) {
+			mNotifyIcon->setText(getNotifyMessage(count > 1).arg(count));
+			mNotifyIcon->setVisible(true);
+		} else {
+			mNotifyIcon->setVisible(false);
+		}
+	}
+
+	if (newCount != count) {
+		emit countChanged();
+	}
+
+	count = newCount;
+}
+
+QString UserNotify::getTrayMessage(bool plural)
+{
+	return plural ? tr("You have %1 new messages") : tr("You have %1 new message");
+}
+
+QString UserNotify::getNotifyMessage(bool plural)
+{
+	return plural ? tr("%1 new messages") : tr("%1 new message");
+}
+
+void UserNotify::trayIconClicked(QSystemTrayIcon::ActivationReason e)
+{
+	if (e == QSystemTrayIcon::Trigger || e == QSystemTrayIcon::DoubleClick) {
+		iconClicked();
+	}
+}