epist now handles -display on the command line, and gets the client list and act

ive window

1 files changed, 112 insertions, 0 deletions

diff --git a/util/epist/process.cc b/util/epist/process.cc
new file mode 100644
index 00000000..dab1f16d
--- /dev/null
+++ b/util/epist/process.cc
@@ -0,0 +1,112 @@
+// -*- mode: C++; indent-tabs-mode: nil; -*-
+// process.cc for Epistory - a key handler for NETWM/EWMH window managers.
+// Copyright (c) 2002 - 2002 Ben Jansens <ben at orodu.net>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#include "process.hh"
+#include "epist.hh"
+#include "window.hh"
+
+#ifdef    HAVE_CONFIG_H
+#  include "../../config.h"
+#endif // HAVE_CONFIG_H
+
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#include "../../src/XAtom.hh"
+
+WindowList _clients;
+WindowList::iterator _active = _clients.end();
+
+void processEvent(const XEvent &e) {
+  switch (e.type) {
+  case PropertyNotify:
+    if (e.xproperty.atom == _xatom->getAtom(XAtom::net_active_window))
+      updateActiveWindow();
+    if (e.xproperty.atom == _xatom->getAtom(XAtom::net_client_list))
+      updateClientList();
+    break;
+  }
+}
+
+
+void updateClientList() {
+  WindowList::iterator insert_point = _active;
+  if (insert_point != _clients.end())
+    ++insert_point; // get to the item client the focused client
+  
+  // get the client list from the root window
+  Window *rootclients = 0;
+  unsigned long num = (unsigned) -1;
+  if (! _xatom->getValue(_root, XAtom::net_client_list, XAtom::window, num,
+                         &rootclients)) {
+    _clients.clear(); // no clients left
+    if (rootclients) delete [] rootclients;
+    return;
+  }
+  
+  WindowList::iterator it, end = _clients.end();
+  unsigned long i;
+  
+  // insert new clients after the active window
+  for (i = 0; i < num; ++i) {
+    for (it = _clients.begin(); it != end; ++it)
+      if (*it == rootclients[i])
+        break;
+    if (it == end) {  // didn't already exist
+      _clients.insert(insert_point, rootclients[i]);
+      cout << "Added window: " << rootclients[i] << endl;
+    }
+  }
+
+  // remove clients that no longer exist
+  for (it = _clients.begin(); it != end;) {
+    WindowList::iterator it2 = it++;
+    for (i = 0; i < num; ++i)
+      if (*it2 == rootclients[i])
+        break;
+    if (i == num)  { // no longer exists
+      _clients.erase(it2);
+      cout << "Removed window: " << it2->window() << endl;
+    }
+  }
+
+  if (rootclients) delete [] rootclients;
+}
+
+
+void updateActiveWindow() {
+  Window a = None;
+  _xatom->getValue(_root, XAtom::net_active_window, XAtom::window, a);
+  
+  WindowList::iterator it, end = _clients.end();
+  for (it = _clients.begin(); it != end; ++it) {
+    if (*it == a)
+      break;
+  }
+  _active = it;
+
+  cout << "Active window is now: ";
+  if (_active == _clients.end()) cout << "None\n";
+  else cout << _active->window() << endl;
+}