Implement a mount manager mode

diff --git a/README.txt b/README.txt
index 9bdd562a61ea8ba3f4ec32adc158aaddc6deb640..cb9946831223794de9cf88a6afa7b62c49bd2181 100644 (file)
--- a/README.txt
+++ b/README.txt
@@ -18,6 +18,10 @@ In addition, there are some command-line switches:
     manager.  The command is run without arguments in the directory where the
     device was mounted.
 
+  -m
+    Start a persistent mount manager window from which devices can be both
+    mounted and unmounted.
+
   -h
     Displays a summary of options.
 

diff --git a/main.c b/main.c
index 5aa961130cd80890b732ea6be857b1a23547c8a1..24b87fc5994ee8e5c70a4e4a58822eff14b38117 100644 (file)
--- a/main.c
+++ b/main.c
@@ -30,8 +30,15 @@ typedef struct sDevice
        time_t time;
 } Device;
 
+typedef struct sGuiContext
+{
+       int manager;
+       GtkWidget *list;
+       GtkWidget *button;
+       char *post_mount_command;
+} GuiContext;
+
 int verbosity = 0;
-char *post_mount_command = NULL;
 
 /**
 Parses a string of the form name=value and places the components in a Property
@@ -759,12 +766,29 @@ int toggle_device(Device *device, char *out_buf, int out_size)
        return 0;
 }
 
+/**
+Callback for selection in the device list changing.  Updates the action button
+label according to device status.
+*/
+void selection_changed(GtkTreeSelection *selection, gpointer user_data)
+{
+       GuiContext *context = (GuiContext *)user_data;
+       GtkTreeIter iter;
+       GtkTreeModel *model;
+       Device *device;
+
+       gtk_tree_selection_get_selected(selection, &model, &iter);
+       gtk_tree_model_get(model, &iter, 1, &device, -1);
+       gtk_button_set_label(GTK_BUTTON(context->button), (device->mount_point ? "Unmount" : "Mount"));
+}
+
 /**
 Callback for activating a row in the device list.  Mounts or unmounts the
 device depending on operating mode.
 */
 void row_activated(GtkTreeView *list, GtkTreePath *path, GtkTreeViewColumn *column, gpointer user_data)
 {
+       GuiContext *context = (GuiContext *)user_data;
        GtkTreeModel *model;
        GtkTreeIter iter;
        Device *device;
@@ -786,23 +810,36 @@ void row_activated(GtkTreeView *list, GtkTreePath *path, GtkTreeViewColumn *colu
                /* Pmount terminated with nonzero status or a signal.  Display an
                error to the user. */
                dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, "%s", output);
-               g_signal_connect(dialog, "response", &gtk_main_quit, NULL);
+               if(context->manager)
+                       g_signal_connect(dialog, "response", G_CALLBACK(&gtk_widget_destroy), dialog);
+               else
+                       g_signal_connect(dialog, "response", G_CALLBACK(&gtk_main_quit), NULL);
                gtk_widget_show_all(dialog);
                return;
        }
 
-       gtk_main_quit();
+       if(context->manager)
+       {
+               gtk_list_store_set(GTK_LIST_STORE(model), &iter,
+                       2, !!device->mount_point,
+                       3, device->mount_point,
+                       -1);
+
+               gtk_button_set_label(GTK_BUTTON(context->button), (device->mount_point ? "Unmount" : "Mount"));
+       }
+       else
+               gtk_main_quit();
 
-       if(post_mount_command && device->mount_point)
+       if(context->post_mount_command && device->mount_point)
        {
                if(verbosity>=1)
-                       printf("Running %s in %s\n", post_mount_command, device->mount_point);
+                       printf("Running %s in %s\n", context->post_mount_command, device->mount_point);
 
                pid = fork();
                if(pid==0)
                {
                        chdir(device->mount_point);
-                       execlp(post_mount_command, post_mount_command, NULL);
+                       execlp(context->post_mount_command, context->post_mount_command, NULL);
                        _exit(1);
                }
        }
@@ -817,16 +854,18 @@ list to be activated.
 */
 void button_clicked(GtkButton *button, gpointer user_data)
 {
-       GtkWidget *list = (GtkWidget *)user_data;
+       GuiContext *context = (GuiContext *)user_data;
        GtkTreeSelection *selection;
        GtkTreeIter iter;
        GtkTreeModel *model;
        GtkTreePath *path;
+       GtkTreeViewColumn *column;
 
-       selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(list));
+       selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(context->list));
        gtk_tree_selection_get_selected(selection, &model, &iter);
        path = gtk_tree_model_get_path(model, &iter);
-       gtk_tree_view_row_activated(GTK_TREE_VIEW(list), path, gtk_tree_view_get_column(GTK_TREE_VIEW(list), 0));
+       column = gtk_tree_view_get_column(GTK_TREE_VIEW(context->list), 0);
+       gtk_tree_view_row_activated(GTK_TREE_VIEW(context->list), path, column);
        gtk_tree_path_free(path);
 
        (void)button;
@@ -858,18 +897,19 @@ void show_help(void)
                "  -v  Increase verbosity\n"
                "  -u  Unmount a device (default is mount)\n"
                "  -r  Run a command after mounting\n"
+               "  -m  Start a persistent mount manager\n"
                "  -h  Display this help\n");
 }
 
 int main(int argc, char **argv)
 {
+       GuiContext context;
        GtkWidget *window;
        GtkWidget *box;
        GtkWidget *viewport;
-       GtkWidget *list;
        GtkListStore *store;
        GtkTreeSelection *selection;
-       GtkWidget *button;
+       GtkCellRenderer *mounted_toggle;
        GtkTreeIter iter;
        Device *devices;
        int i;
@@ -878,9 +918,12 @@ int main(int argc, char **argv)
        int umount = 0;
        int n_listed;
 
+       context.manager = 0;
+       context.post_mount_command = NULL;
+
        gtk_init(&argc, &argv);
 
-       while((opt = getopt(argc, argv, "vur:h"))!=-1) switch(opt)
+       while((opt = getopt(argc, argv, "vur:mh"))!=-1) switch(opt)
        {
        case 'v':
                ++verbosity;
@@ -889,7 +932,10 @@ int main(int argc, char **argv)
                umount = 1;
                break;
        case 'r':
-               post_mount_command = optarg;
+               context.post_mount_command = optarg;
+               break;
+       case 'm':
+               context.manager = 1;
                break;
        case 'h':
                show_help();
@@ -908,20 +954,40 @@ int main(int argc, char **argv)
        gtk_viewport_set_shadow_type(GTK_VIEWPORT(viewport), GTK_SHADOW_IN);
        gtk_box_pack_start(GTK_BOX(box), viewport, TRUE, TRUE, 0);
 
-       list = gtk_tree_view_new();
-       gtk_container_add(GTK_CONTAINER(viewport), list);
-       g_signal_connect(list, "row-activated", G_CALLBACK(&row_activated), NULL);
+       context.list = gtk_tree_view_new();
+       gtk_container_add(GTK_CONTAINER(viewport), context.list);
+       g_signal_connect(context.list, "row-activated", G_CALLBACK(&row_activated), &context);
 
-       store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_POINTER);
-       gtk_tree_view_set_model(GTK_TREE_VIEW(list), GTK_TREE_MODEL(store));
-       gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(list),
+       store = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_BOOLEAN, G_TYPE_STRING);
+       gtk_tree_view_set_model(GTK_TREE_VIEW(context.list), GTK_TREE_MODEL(store));
+       gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(context.list),
                -1, "Device", gtk_cell_renderer_text_new(), "text", 0, NULL);
 
-       selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(list));
+       if(context.manager)
+       {
+               GtkTreeViewColumn *mounted_column;
+               GtkCellRenderer *mount_point_renderer;
+
+               mounted_column = gtk_tree_view_column_new();
+               gtk_tree_view_column_set_title(mounted_column, "Mounted");
+
+               mounted_toggle = gtk_cell_renderer_toggle_new();
+               gtk_tree_view_column_pack_start(mounted_column, mounted_toggle, FALSE);
+               gtk_tree_view_column_add_attribute(mounted_column, mounted_toggle, "active", 2);
+
+               mount_point_renderer = gtk_cell_renderer_text_new();
+               gtk_tree_view_column_pack_start(mounted_column, mount_point_renderer, TRUE);
+               gtk_tree_view_column_add_attribute(mounted_column, mount_point_renderer, "text", 3);
+
+               gtk_tree_view_insert_column(GTK_TREE_VIEW(context.list), mounted_column, -1);
+       }
+
+       selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(context.list));
+       g_signal_connect(selection, "changed", G_CALLBACK(&selection_changed), &context);
 
-       button = gtk_button_new_with_label(umount ? "Unmount" : "Mount");
-       g_signal_connect(button, "clicked", G_CALLBACK(&button_clicked), list);
-       gtk_box_pack_start(GTK_BOX(box), button, FALSE, TRUE, 0);
+       context.button = gtk_button_new_with_label(umount ? "Unmount" : "Mount");
+       g_signal_connect(context.button, "clicked", G_CALLBACK(&button_clicked), &context);
+       gtk_box_pack_start(GTK_BOX(box), context.button, FALSE, TRUE, 0);
 
        devices = get_devices();
        n_listed = 0;
@@ -930,10 +996,15 @@ int main(int argc, char **argv)
                /* Populate the list with devices in appropriate state. */
                latest = 0;
                for(i=0; devices[i].node; ++i)
-                       if(!devices[i].mount_point==!umount)
+                       if(!devices[i].mount_point==!umount || context.manager)
                        {
                                gtk_list_store_append(store, &iter);
-                               gtk_list_store_set(store, &iter, 0, devices[i].description, 1, &devices[i], -1);
+                               gtk_list_store_set(store, &iter,
+                                       0, devices[i].description,
+                                       1, &devices[i],
+                                       2, !!devices[i].mount_point,
+                                       3, devices[i].mount_point,
+                                       -1);
                                if(devices[i].time>latest)
                                {
                                        /* Pre-select the device that appeared on the system most recently. */
@@ -946,7 +1017,7 @@ int main(int argc, char **argv)
 
        }
 
-       if(n_listed)
+       if(n_listed || context.manager)
                gtk_widget_show_all(window);
        else
        {