Compositor, wl_shell: Maintain a list of all shellSurfaces

QWaylandShellSurface is added to a list of all shell surfaces. This list
can be convenient in a number of places, namely:

* Closing all popups
* Checking for protocol errors
* Other uses for iterating over all shell surfaces

Change-Id: I384b4e2170840e8db55ca01c49eccc0463f38863
Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/src/compositor/extensions/qwaylandwlshell.cpp b/src/compositor/extensions/qwaylandwlshell.cpp
index 90f591956..51c73fc64 100644
--- a/src/compositor/extensions/qwaylandwlshell.cpp
+++ b/src/compositor/extensions/qwaylandwlshell.cpp
@@ -86,9 +86,16 @@ void QWaylandWlShellPrivate::shell_get_shell_surface(Resource *resource, uint32_
         shellSurface = new QWaylandWlShellSurface(q, surface, shellSurfaceResource);
     }
 
+    m_shellSurfaces.append(shellSurface);
     emit q->shellSurfaceCreated(shellSurface);
 }
 
+void QWaylandWlShellPrivate::unregisterShellSurface(QWaylandWlShellSurface *shellSurface)
+{
+    if (!m_shellSurfaces.removeOne(shellSurface))
+        qWarning("Unexpected state. Can't find registered shell surface.");
+}
+
 QWaylandWlShellSurfacePrivate::QWaylandWlShellSurfacePrivate()
     : QWaylandCompositorExtensionPrivate()
     , wl_shell_surface()
@@ -308,6 +315,23 @@ void QWaylandWlShell::initialize()
     d->init(compositor->display(), 1);
 }
 
+QList<QWaylandWlShellSurface *> QWaylandWlShell::shellSurfaces() const
+{
+    Q_D(const QWaylandWlShell);
+    return d->m_shellSurfaces;
+}
+
+QList<QWaylandWlShellSurface *> QWaylandWlShell::shellSurfacesForClient(QWaylandClient *client) const
+{
+    Q_D(const QWaylandWlShell);
+    QList<QWaylandWlShellSurface *> surfsForClient;
+    Q_FOREACH (QWaylandWlShellSurface *shellSurface, d->m_shellSurfaces) {
+        if (shellSurface->surface()->client() == client)
+            surfsForClient.append(shellSurface);
+    }
+    return surfsForClient;
+}
+
 /*!
  * Returns the Wayland interface for the QWaylandWlShell.
  */
@@ -385,6 +409,12 @@ QWaylandWlShellSurface::QWaylandWlShellSurface(QWaylandWlShell *shell, QWaylandS
     initialize(shell, surface, res);
 }
 
+QWaylandWlShellSurface::~QWaylandWlShellSurface()
+{
+    Q_D(QWaylandWlShellSurface);
+    QWaylandWlShellPrivate::get(d->m_shell)->unregisterShellSurface(this);
+}
+
 /*!
  * \qmlmethod void QtWaylandCompositor::WlShellSurface::initialize(object shell, object surface, object client, int id)
  *