Define ShellClient debug output

Summary:
Add a debug format for ShellClients, otherwise the output is always
empty. Also add the nospace qualifier to ShellClient's and Client's
debug output to present it correctly.

Test Plan: Manually.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D15560

client.cpp

@@ -1772,6 +1772,7 @@ void Client::updateAllowedActions(bool force)
 
 void Client::debug(QDebug& stream) const
 {
+    stream.nospace();
     print<QDebug>(stream);
 }
 

client.h

@@ -689,7 +689,7 @@ inline bool Client::hiddenPreview() const
 template <typename T>
 inline void Client::print(T &stream) const
 {
-    stream << "\'ID:" << window() << ";WMCLASS:" << resourceClass() << ":"
+    stream << "\'Client:" << window() << ";WMCLASS:" << resourceClass() << ":"
            << resourceName() << ";Caption:" << caption() << "\'";
 }
 

shell_client.cpp

@@ -425,8 +425,9 @@ QSize ShellClient::clientSize() const
 
 void ShellClient::debug(QDebug &stream) const
 {
-    // TODO: implement
-    Q_UNUSED(stream)
+    stream.nospace();
+    stream << "\'ShellClient:" << surface() << ";WMCLASS:" << resourceClass() << ":"
+           << resourceName() << ";Caption:" << caption() << "\'";
 }
 
 Layer ShellClient::layerForDock() const