1 files changed, 124 insertions, 6 deletions

diff --git a/st.c b/st.c
index 5d5ac30..e636b63 100644
--- a/st.c
+++ b/st.c
@@ -17,6 +17,7 @@
 #include <sys/wait.h>
 #include <unistd.h>
 #include <X11/Xlib.h>
+#include <X11/Xatom.h>
 #include <X11/keysym.h>
 #include <X11/Xutil.h>
 
@@ -199,7 +200,8 @@ static void focus(XEvent *);
 static void brelease(XEvent *);
 static void bpress(XEvent *);
 static void bmotion(XEvent *);
-
+static void selection_notify(XEvent *);
+static void selection_request(XEvent *);
 
 static void (*handler[LASTEvent])(XEvent *) = {
         [KeyPress] = kpress,
@@ -212,6 +214,8 @@ static void (*handler[LASTEvent])(XEvent *) = {
         [MotionNotify] = bmotion,
         [ButtonPress] = bpress,
         [ButtonRelease] = brelease,
+        [SelectionNotify] = selection_notify,
+        [SelectionRequest] = selection_request,
 };
 
 /* Globals */
@@ -278,15 +282,129 @@ static char *getseltext() {
         return str;
 }
 
-/* TODO: use X11 clipboard */
+static void selection_notify(XEvent *e) {
+        unsigned long nitems;
+        unsigned long length;
+        int format, res;
+        unsigned char *data;
+        Atom type;
+
+        res = XGetWindowProperty(xw.dis, xw.win, XA_PRIMARY, 0, 0, False, 
+                                AnyPropertyType, &type, &format, &nitems, &length, &data);
+        switch(res) {
+                case BadAtom:
+                case BadValue:
+                case BadWindow:
+                        fprintf(stderr, "Invalid paste, XGetWindowProperty0");
+                        return;
+        }
+
+        res = XGetWindowProperty(xw.dis, xw.win, XA_PRIMARY, 0, length, False,
+                                AnyPropertyType, &type, &format, &nitems, &length, &data);
+        switch(res) {
+                case BadAtom:
+                case BadValue:
+                case BadWindow:
+                        fprintf(stderr, "Invalid paste, XGetWindowProperty0");
+                        return;
+        }
+
+        if(data) {
+                ttywrite((const char *) data, nitems * format / 8);
+                XFree(data);
+        }
+}
+
+static void selpaste() {
+        XConvertSelection(xw.dis, XA_PRIMARY, XA_STRING, XA_PRIMARY, xw.win, CurrentTime);
+}
+
+static void selection_request(XEvent *e)
+{
+        XSelectionRequestEvent *xsre;
+        XSelectionEvent xev;
+        int res;
+        Atom xa_targets;
+
+        xsre = (XSelectionRequestEvent *) e;
+        xev.type = SelectionNotify;
+        xev.requestor = xsre->requestor;
+        xev.selection = xsre->selection;
+        xev.target = xsre->target;
+        xev.time = xsre->time;
+        /* reject */
+        xev.property = None;
+
+        xa_targets = XInternAtom(xw.dis, "TARGETS", 0);
+        if(xsre->target == xa_targets) {
+                /* respond with the supported type */
+                Atom string = XA_STRING;
+                res = XChangeProperty(xsre->display, xsre->requestor, xsre->property, XA_ATOM, 32,
+                                PropModeReplace, (unsigned char *) &string, 1);
+                switch(res) {
+                        case BadAlloc:
+                        case BadAtom:
+                        case BadMatch:
+                        case BadValue:
+                        case BadWindow:
+                                fprintf(stderr, "Error in selection_request, TARGETS");
+                                break;
+                        default:
+                                xev.property = xsre->property;
+                }
+        } else if(xsre->target == XA_STRING) {
+                res = XChangeProperty(xsre->display, xsre->requestor, xsre->property,
+                                xsre->target, 8, PropModeReplace, (unsigned char *) sel.clip,
+                                strlen(sel.clip));
+                switch(res) {
+                        case BadAlloc:
+                        case BadAtom:
+                        case BadMatch:
+                        case BadValue:
+                        case BadWindow:
+                                fprintf(stderr, "Error in selection_request, XA_STRING");
+                                break;
+                        default:
+                         xev.property = xsre->property;
+                }
+        }
+
+        /* all done, send a notification to the listener */
+        res = XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev);
+        switch(res) {
+                case 0:
+                case BadValue:
+                case BadWindow:
+                        fprintf(stderr, "Error in selection_requested, XSendEvent");
+        }
+}
+
 static void selcopy(char *str) {
+        /* register the selection for both the clipboard and the primary */
+        Atom clipboard;
+        int res;
+
         free(sel.clip);
         sel.clip = str;
-}
 
-static void selpaste() {
-        if(sel.clip)
-                ttywrite(sel.clip, strlen(sel.clip));
+        res = XSetSelectionOwner(xw.dis, XA_PRIMARY, xw.win, CurrentTime);
+        switch(res) {
+                case BadAtom:
+                case BadWindow:
+                        fprintf(stderr, "Invalid copy, XSetSelectionOwner");
+                        return;
+        }
+
+        clipboard = XInternAtom(xw.dis, "CLIPBOARD", 0);
+        res = XSetSelectionOwner(xw.dis, clipboard, xw.win, CurrentTime);
+        switch(res) {
+                case BadAtom:
+                case BadWindow:
+                        fprintf(stderr, "Invalid copy, XSetSelectionOwner");
+                        return;
+        }
+
+        XFlush(xw.dis);
 }
 
 /* TODO: doubleclick to select word */