tcreating new process when opening new window if possible. - surf - customized build of surf, the suckless webkit browser
 (HTM) git clone git://src.adamsgaard.dk/surf
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       ---
 (DIR) commit 17bbc1a3cc50a96d873f3d2064c2f05008d42922
 (DIR) parent 533c8e5b35e09541f264b7ac8626832eb7e5f076
 (HTM) Author: Enno Boland (tox) <tox@s01.de>
       Date:   Thu, 15 Oct 2009 16:31:49 +0200
       
       creating new process when opening new window if possible.
       Diffstat:
         M surf.c                              |     103 +++++++++++++++++++++++++++----
       
       1 file changed, 90 insertions(+), 13 deletions(-)
       ---
 (DIR) diff --git a/surf.c b/surf.c
       t@@ -2,6 +2,7 @@
         *
         * To understand surf, start reading main().
         */
       +#include <signal.h>
        #include <X11/X.h>
        #include <X11/Xatom.h>
        #include <gtk/gtk.h>
       t@@ -9,6 +10,8 @@
        #include <gdk/gdk.h>
        #include <gdk/gdkkeysyms.h>
        #include <string.h>
       +#include <sys/types.h>
       +#include <sys/wait.h>
        #include <unistd.h>
        #include <stdlib.h>
        #include <stdio.h>
       t@@ -67,11 +70,14 @@ static Client *clients = NULL;
        static GdkNativeWindow embed = 0;
        static gboolean showxid = FALSE;
        static gboolean ignore_once = FALSE;
       +static gchar winid[64];
       +static gchar *progname;
        
        static gchar *buildpath(const gchar *path);
        static void cleanup(void);
        static void clipboard(Client *c, const Arg *arg);
        static gchar *copystr(gchar **str, const gchar *src);
       +static gboolean decidewindow(WebKitWebView *view, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c);
        static void destroyclient(Client *c);
        static void destroywin(GtkWidget* w, Client *c);
        static void die(char *str);
       t@@ -89,7 +95,8 @@ static void loadstart(WebKitWebView *view, WebKitWebFrame *f, Client *c);
        static void loaduri(Client *c, const Arg *arg);
        static void navigate(Client *c, const Arg *arg);
        static Client *newclient(void);
       -static WebKitWebView *newwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c);
       +static void newproc(const gchar *url);
       +static WebKitWebView *createwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c);
        static void pasteurl(GtkClipboard *clipboard, const gchar *text, gpointer d);
        static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer d);
        static void print(Client *c, const Arg *arg);
       t@@ -98,8 +105,10 @@ static void progresschange(WebKitWebView *view, gint p, Client *c);
        static void request(SoupSession *s, SoupMessage *m, Client *c);
        static void reload(Client *c, const Arg *arg);
        static void rereadcookies(void);
       +static void sigchld(int unused);
        static void setcookie(char *name, char *val, char *dom, char *path, long exp);
        static void setup(void);
       +static void spawn(Client *c, const Arg *arg);
        static void titlechange(WebKitWebView* view, WebKitWebFrame* frame, const gchar* title, Client *c);
        static void scroll(Client *c, const Arg *arg);
        static void searchtext(Client *c, const Arg *arg);
       t@@ -111,6 +120,7 @@ static void titlechange(WebKitWebView* view, WebKitWebFrame* frame, const gchar*
        static gboolean unfocusbar(GtkWidget *w, GdkEventFocus *e, Client *c);
        static void usage(void);
        static void update(Client *c);
       +static void updatewinid(Client *c);
        static void windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c);
        static void zoom(Client *c, const Arg *arg);
        
       t@@ -190,6 +200,16 @@ destroyclient(Client *c) {
                        gtk_main_quit();
        }
        
       +gboolean
       +decidewindow(WebKitWebView *view, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c) {
       +        if(webkit_web_navigation_action_get_reason(n) == WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
       +                webkit_web_policy_decision_ignore(p);
       +                newproc(webkit_network_request_get_uri(r));
       +                return TRUE;
       +        }
       +        return FALSE;
       +}
       +
        void
        destroywin(GtkWidget* w, Client *c) {
                destroyclient(c);
       t@@ -300,6 +320,7 @@ keypress(GtkWidget* w, GdkEventKey *ev, Client *c) {
                        focus = UrlBar;
                else
                        focus = Browser;
       +        updatewinid(c);
                for(i = 0; i < LENGTH(keys); i++) {
                        if(focus & keys[i].focus
                                        && gdk_keyval_to_lower(ev->keyval) == keys[i].keyval
       t@@ -393,7 +414,8 @@ newclient(void) {
                g_signal_connect(G_OBJECT(c->view), "load-committed", G_CALLBACK(loadcommit), c);
                g_signal_connect(G_OBJECT(c->view), "load-started", G_CALLBACK(loadstart), c);
                g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
       -        g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(newwindow), c);
       +        g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(createwindow), c);
       +        g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
                g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(initdownload), c);
                g_signal_connect(G_OBJECT(c->view), "window-object-cleared", G_CALLBACK(windowobjectcleared), c);
                g_signal_connect_after(session, "request-started", G_CALLBACK(request), c);
       t@@ -456,8 +478,32 @@ newclient(void) {
                return c;
        }
        
       +void
       +newproc(const gchar *url) {
       +        guint i = 0, urlindex;
       +        const gchar *cmd[7];
       +        const Arg arg = { .v = (void *)cmd };
       +        gchar tmp[64];
       +
       +        cmd[i++] = progname;
       +        if(embed) {
       +                cmd[i++] = "-e";
       +                snprintf(tmp, LENGTH(tmp), "%u\n", (int)embed);
       +                cmd[i++] = tmp;
       +        }
       +        if(showxid) {
       +                cmd[i++] = "-x";
       +        }
       +        cmd[i++] = "--";
       +        urlindex = i;
       +        if(url)
       +                cmd[i++] = url;
       +        cmd[i++] = NULL;
       +        spawn(NULL, &arg);
       +}
       +
        WebKitWebView *
       -newwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c) {
       +createwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c) {
                Client *n = newclient();
                return n->view;
        }
       t@@ -541,6 +587,7 @@ reload(Client *c, const Arg *arg) {
        
        void
        rereadcookies(void) {
       +
        }
        
        void
       t@@ -557,6 +604,13 @@ scroll(Client *c, const Arg *arg) {
        }
        
        void
       +sigchld(int unused) {
       +        if(signal(SIGCHLD, sigchld) == SIG_ERR)
       +                die("Can't install SIGCHLD handler");
       +        while(0 < waitpid(-1, NULL, WNOHANG));
       +}
       +
       +void
        setcookie(char *name, char *val, char *dom, char *path, long exp) {
        
        }
       t@@ -565,6 +619,8 @@ void
        setup(void) {
                SoupSession *s;
        
       +        /* clean up any zombies immediately */
       +        sigchld(0);
                gtk_init(NULL, NULL);
                if (!g_thread_supported())
                        g_thread_init(NULL);
       t@@ -604,12 +660,11 @@ source(Client *c, const Arg *arg) {
        
        void
        searchtext(Client *c, const Arg *arg) {
       +        const gchar *text;
                gboolean forward = *(gboolean *)arg;
       -        webkit_web_view_search_text(c->view,
       -                        gtk_entry_get_text(GTK_ENTRY(c->searchbar)),
       -                        FALSE,
       -                        forward,
       -                        TRUE);
       +        text = gtk_entry_get_text(GTK_ENTRY(c->searchbar));
       +        webkit_web_view_search_text(c->view, text, FALSE, forward, TRUE);
       +        webkit_web_view_mark_text_matches(c->view, text, FALSE, 0);
        }
        
        void
       t@@ -633,6 +688,19 @@ stop(Client *c, const Arg *arg) {
        }
        
        void
       +spawn(Client *c, const Arg *arg) {
       +        if(fork() == 0) {
       +                if(dpy)
       +                        close(ConnectionNumber(dpy));
       +                setsid();
       +                execvp(((char **)arg->v)[0], (char **)arg->v);
       +                fprintf(stderr, "tabbed: execvp %s", ((char **)arg->v)[0]);
       +                perror(" failed");
       +                exit(0);
       +        }
       +}
       +
       +void
        titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, Client *c) {
                c->title = copystr(&c->title, t);
                update(c);
       t@@ -666,6 +734,12 @@ update(Client *c) {
        }
        
        void
       +updatewinid(Client *c) {
       +        snprintf(winid, LENGTH(winid), "%u",
       +                        (int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
       +}
       +
       +void
        windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c) {
                JSStringRef jsscript;
                gchar *script;
       t@@ -692,8 +766,9 @@ int main(int argc, char *argv[]) {
                int i;
                Arg arg;
        
       +        progname = argv[0];
                /* command line args */
       -        for(i = 1, arg.v = NULL; i < argc; i++) {
       +        for(i = 1, arg.v = NULL; i < argc && argv[i][0] == '-'; i++) {
                        if(!strcmp(argv[i], "-x"))
                                showxid = TRUE;
                        else if(!strcmp(argv[i], "-e")) {
       t@@ -702,15 +777,17 @@ int main(int argc, char *argv[]) {
                                else
                                        usage();
                        }
       -                else if(!strcmp(argv[i], "--"))
       +                else if(!strcmp(argv[i], "--")) {
       +                        i++;
                                break;
       +                }
                        else if(!strcmp(argv[i], "-v"))
                                die("surf-"VERSION", © 2009 surf engineers, see LICENSE for details\n");
       -                else if(argv[i][0] == '-')
       -                        usage();
                        else
       -                        arg.v = argv[i];
       +                        usage();
                }
       +        if(i < argc)
       +                arg.v = argv[i];
                setup();
                newclient();
                if(arg.v) {