fixed implementation of _NET_WM_STATE_MODAL

ChangeLog

@@ -1,6 +1,8 @@
  (Format: Year/Month/Day)
 Changes for 1.0.0:
 *07/06/30:
+   * Fixed implementation of _NET_WM_STATE_MODAL (Mark)
+     Ewmh.cc/hh WinClient.cc/hh Window.cc
    * Fixed the groups file, even though it's deprecated (Mark)
      Workspace.cc Screen.cc
    * Fix _NET_WM_STATE_DEMANDS_ATTENTION with tabbed windows, #1732392 (Mark)

src/Ewmh.cc

@@ -629,7 +629,7 @@ void Ewmh::updateState(FluxboxWindow &win) {
         state.push_back(m_net_wm_state_skip_taskbar);
     if (win.isFullscreen())
         state.push_back(m_net_wm_state_fullscreen);
-    if (win.winClient().isModal())
+    if (win.winClient().isStateModal())
         state.push_back(m_net_wm_state_modal);
 
     FluxboxWindow::ClientList::iterator it = win.clientList().begin();
@@ -1031,12 +1031,16 @@ void Ewmh::createAtoms() {
     utf8_string = XInternAtom(disp, "UTF8_STRING", False);
 }
 
-// wrapper for avoiding changing every AtomHandler to include an unnecessary
-// parameter, although we need it for _NET_WM_STATE_DEMANDS_ATTENTION
+// wrapper for real setState, since most operations don't need the client
 void Ewmh::setState(FluxboxWindow &win, Atom state, bool value) {
     setState(win, state, value, win.winClient());
 }
 
+// wrapper for real toggleState, since most operations don't need the client
+void Ewmh::toggleState(FluxboxWindow &win, Atom state) {
+    toggleState(win, state, win.winClient());
+}
+
 // set window state
 void Ewmh::setState(FluxboxWindow &win, Atom state, bool value,
                     WinClient &client) {
@@ -1084,13 +1088,14 @@ void Ewmh::setState(FluxboxWindow &win, Atom state, bool value,
             Fluxbox::instance()->attentionHandler().
                 update(&client.focusSig());
         }
+    } else if (state == m_net_wm_state_modal) {
+        client.setStateModal(value);
     }
 
-    // Note: state == net_wm_state_modal, We should not change it
 }
 
 // toggle window state
-void Ewmh::toggleState(FluxboxWindow &win, Atom state) {
+void Ewmh::toggleState(FluxboxWindow &win, Atom state, WinClient &client) {
     if (state == m_net_wm_state_sticky) { // sticky
         win.stick();
     } else if (state == m_net_wm_state_shaded){ // shaded
@@ -1119,6 +1124,8 @@ void Ewmh::toggleState(FluxboxWindow &win, Atom state) {
             win.moveToLayer(Layer::NORMAL);
         else
             win.moveToLayer(Layer::ABOVE_DOCK);
+    } else if (state == m_net_wm_state_modal) { // modal
+        client.setStateModal(!client.isStateModal());
     }
 
 }

src/Ewmh.hh

@@ -70,6 +70,7 @@ private:
     void setState(FluxboxWindow &win, Atom state, bool value,
                   WinClient &client);
     void toggleState(FluxboxWindow &win, Atom state);
+    void toggleState(FluxboxWindow &win, Atom state, WinClient &client);
     void createAtoms();
     void updateStrut(WinClient &winclient);
     void updateActions(FluxboxWindow &win);

src/WinClient.cc

@@ -76,7 +76,8 @@ WinClient::WinClient(Window win, BScreen &screen, FluxboxWindow *fbwin):FbTk::Fb
                      normal_hint_flags(0),
                      wm_hint_flags(0),
                      m_win(fbwin),
-                     m_modal(0),
+                     m_modal_count(0),
+                     m_modal(false),
                      send_focus_message(false),
                      send_close_message(false),
                      m_win_gravity(0),
@@ -136,13 +137,14 @@ WinClient::~WinClient() {
 
     Fluxbox *fluxbox = Fluxbox::instance();
 
-
     //
     // clear transients and transient_for
     //
     if (transient_for != 0) {
         assert(transient_for != this);
         transient_for->transientList().remove(this);
+        if (m_modal)
+            transient_for->removeModal();
         transient_for = 0;
     }
 
@@ -276,6 +278,8 @@ void WinClient::updateTransientInfo() {
     // remove this from parent
     if (transientFor() != 0) {
         transientFor()->transientList().remove(this);
+        if (m_modal)
+            transientFor()->removeModal();
     }
 
     transient_for = 0;
@@ -337,6 +341,8 @@ void WinClient::updateTransientInfo() {
         // we need to add ourself to the right client in
         // the transientFor() window so we search client
         transient_for->transientList().push_back(this);
+        if (m_modal)
+            transient_for->addModal();
     }
 
 }
@@ -663,16 +669,21 @@ bool WinClient::hasGroupLeftWindow() const {
     return false;
 }
 
-void WinClient::addModal() {
-    ++m_modal;
-    if (transient_for)
-        transient_for->addModal();
-}
+void WinClient::setStateModal(bool state) {
+    if (state == m_modal)
+        return;
 
-void WinClient::removeModal() {
-    --m_modal;
-    if (transient_for)
-        transient_for->removeModal();
+    m_modal = state;
+    if (transient_for) {
+        if (state)
+            transient_for->addModal();
+        else
+            transient_for->removeModal();
+    }
+
+    // TODO: we're not implementing the following part of EWMH spec:
+    // "if WM_TRANSIENT_FOR is not set or set to the root window the dialog is
+    //  modal for its window group."
 }
 
 bool WinClient::validateClient() const {

src/WinClient.hh

@@ -57,9 +57,6 @@ public:
     // not aware of anything that makes this false at present
     inline bool isClosable() const { return true; }
 
-    void addModal(); // some transient of ours (or us) is modal
-    void removeModal(); // some transient (or us) is no longer modal
-
     /// updates from wm class hints
     void updateWMClassHint();
     void updateWMProtocols();
@@ -127,7 +124,9 @@ public:
     inline const TransientList &transientList() const { return transients; }
     inline bool isTransient() const { return transient_for != 0; }
 
-    inline bool isModal() const { return m_modal > 0; }
+    inline bool isModal() const { return m_modal_count > 0; }
+    inline bool isStateModal() const { return m_modal; }
+    void setStateModal(bool state);
 
     const FbTk::FbPixmap &iconPixmap() const { return m_icon_pixmap; }
     const FbTk::FbPixmap &iconMask() const { return m_icon_mask; }
@@ -188,11 +187,16 @@ private:
     /// removes client from any waiting list and clears empty waiting lists
     void removeTransientFromWaitingList();
 
+    // some transient of ours (or us) is modal
+    void addModal() { ++m_modal_count; }
+    // some transient (or us) is no longer modal
+    void removeModal() { --m_modal_count; }
+
     FluxboxWindow *m_win;
 
     // number of transients which we are modal for
-    // or indicates that we are modal if don't have any transients
-    int m_modal;
+    int m_modal_count;
+    bool m_modal;
     bool send_focus_message, send_close_message;
 
     int m_win_gravity;

src/Window.cc

@@ -1372,11 +1372,14 @@ bool FluxboxWindow::setInputFocus() {
 #ifdef DEBUG
             cerr<<__FUNCTION__<<": transient 0x"<<(*it)<<endl;
 #endif // DEBUG
-            if ((*it)->isModal())
+            if ((*it)->isStateModal())
                 return (*it)->focus();
         }
     }
 
+    if (m_client->isModal())
+        return false;
+
     bool ret = false;
 
     if (m_client->getFocusMode() == WinClient::F_LOCALLYACTIVE ||