Desktop
/* $Id: dirtree.c,v 1.13 2012/01/05 23:47:27 khorben Exp $ */
/* Copyright (c) 2012 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Browser */
/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <System.h>
#include <dirent.h>
#include <stdlib.h>
#include <string.h>
#include <libintl.h>
#include "Browser.h"
#define _(string) gettext(string)
#define N_(string) (string)
/* Dirtree */
/* private */
/* types */
typedef struct _BrowserPlugin
{
BrowserPluginHelper * helper;
GtkWidget * widget;
guint source;
gboolean expanding;
GdkPixbuf * folder;
GtkTreeStore * store;
GtkTreeModel * sorted;
GtkWidget * view;
} Dirtree;
enum _DirtreeColumn
{
DC_ICON,
DC_NAME,
DC_PATH,
DC_UPDATED
} DirtreeColumn;
#define DC_LAST DC_UPDATED
#define DC_COUNT (DC_LAST + 1)
/* prototypes */
static Dirtree * _dirtree_init(BrowserPluginHelper * helper);
static void _dirtree_destroy(Dirtree * dirtree);
static GtkWidget * _dirtree_get_widget(Dirtree * dirtree);
static void _dirtree_refresh(Dirtree * dirtree, char const * path);
static gboolean _dirtree_refresh_folder(Dirtree * dirtree, GtkTreeIter * parent,
char const * path, char const * basename, gboolean recurse);
/* callbacks */
static gboolean _dirtree_on_idle(gpointer data);
static void _dirtree_on_row_activated(GtkTreeView * view, GtkTreePath * path,
GtkTreeViewColumn * column, gpointer data);
static void _dirtree_on_row_expanded(GtkTreeView * view, GtkTreeIter * iter,
GtkTreePath * path, gpointer data);
/* public */
/* variables */
BrowserPluginDefinition plugin =
{
N_("Directory tree"),
"stock_folder",
NULL,
_dirtree_init,
_dirtree_destroy,
_dirtree_get_widget,
_dirtree_refresh
};
/* private */
/* functions */
/* dirtree_init */
static Dirtree * _dirtree_init(BrowserPluginHelper * helper)
{
Dirtree * dirtree;
GtkIconTheme * icontheme;
GError * error = NULL;
GtkCellRenderer * renderer;
GtkTreeViewColumn * column;
GtkTreeSelection * treesel;
GtkTreeIter iter;
gint size;
if((dirtree = object_new(sizeof(*dirtree))) == NULL)
return NULL;
dirtree->helper = helper;
dirtree->source = 0;
dirtree->expanding = FALSE;
icontheme = gtk_icon_theme_get_default();
gtk_icon_size_lookup(GTK_ICON_SIZE_BUTTON, &size, &size);
dirtree->folder = gtk_icon_theme_load_icon(icontheme, "stock_folder",
size, GTK_ICON_LOOKUP_USE_BUILTIN, &error);
if(dirtree->folder == NULL)
{
helper->error(helper->browser, error->message, 1);
g_error_free(error);
}
dirtree->widget = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(dirtree->widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
/* backend store */
dirtree->store = gtk_tree_store_new(DC_COUNT, GDK_TYPE_PIXBUF,
G_TYPE_STRING, G_TYPE_STRING, G_TYPE_BOOLEAN);
gtk_tree_store_insert(dirtree->store, &iter, NULL, -1);
gtk_tree_store_set(dirtree->store, &iter, DC_ICON, dirtree->folder,
DC_NAME, "/", DC_PATH, "/", DC_UPDATED, TRUE, -1);
/* sorted store */
dirtree->sorted = gtk_tree_model_sort_new_with_model(GTK_TREE_MODEL(
dirtree->store));
gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(dirtree->sorted),
1, GTK_SORT_ASCENDING);
/* view */
dirtree->view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(
dirtree->sorted));
gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(dirtree->view), FALSE);
/* columns */
renderer = gtk_cell_renderer_pixbuf_new();
column = gtk_tree_view_column_new_with_attributes(NULL, renderer,
"pixbuf", 0, NULL);
gtk_tree_view_column_set_expand(column, FALSE);
gtk_tree_view_append_column(GTK_TREE_VIEW(dirtree->view), column);
renderer = gtk_cell_renderer_text_new();
column = gtk_tree_view_column_new_with_attributes(NULL, renderer,
"text", 1, NULL);
gtk_tree_view_column_set_sort_column_id(column, 1);
gtk_tree_view_append_column(GTK_TREE_VIEW(dirtree->view), column);
/* selection */
treesel = gtk_tree_view_get_selection(GTK_TREE_VIEW(dirtree->view));
gtk_tree_selection_set_mode(treesel, GTK_SELECTION_SINGLE);
/* signals */
g_signal_connect(dirtree->view, "row-activated", G_CALLBACK(
_dirtree_on_row_activated), dirtree);
g_signal_connect(dirtree->view, "row-expanded", G_CALLBACK(
_dirtree_on_row_expanded), dirtree);
gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(
dirtree->widget), dirtree->view);
gtk_widget_show_all(dirtree->widget);
/* populate the root folder */
dirtree->source = g_idle_add(_dirtree_on_idle, dirtree);
return dirtree;
}
/* dirtree_destroy */
static void _dirtree_destroy(Dirtree * dirtree)
{
if(dirtree->source != 0)
g_source_remove(dirtree->source);
g_object_unref(dirtree->folder);
object_delete(dirtree);
}
/* dirtree_get_widget */
static GtkWidget * _dirtree_get_widget(Dirtree * dirtree)
{
return dirtree->widget;
}
/* dirtree_refresh */
static void _dirtree_refresh(Dirtree * dirtree, char const * path)
{
GtkTreeModel * model = GTK_TREE_MODEL(dirtree->store);
GtkTreeIter iter;
GtkTreeIter siter;
GtkTreePath * q;
char * p;
gboolean valid;
size_t i;
size_t j;
char c;
/* only take care of the tree if this is the first invocation */
if(dirtree->source == 0 || path == NULL || (p = strdup(path)) == NULL)
return;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, path);
#endif
g_source_remove(dirtree->source);
dirtree->source = 0;
valid = gtk_tree_model_iter_children(model, &iter, NULL);
for(i = 0; valid == TRUE && p[i] != '\0'; i++)
{
if(p[i] != '/')
continue;
p[i] = '\0';
for(j = i + 1; p[j] != '\0' && p[j] != '/'; j++);
c = p[j];
p[j] = '\0';
valid = _dirtree_refresh_folder(dirtree, &iter, (i == 0)
? "/" : p, &p[i + 1], TRUE);
p[i] = '/';
p[j] = c;
}
free(p);
if(valid != TRUE)
return;
/* expand and scroll to the correct position */
gtk_tree_model_sort_convert_child_iter_to_iter(GTK_TREE_MODEL_SORT(
dirtree->sorted), &siter, &iter);
q = gtk_tree_model_get_path(GTK_TREE_MODEL(dirtree->sorted), &siter);
dirtree->expanding = TRUE;
gtk_tree_view_expand_to_path(GTK_TREE_VIEW(dirtree->view), q);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(dirtree->view), q, NULL,
TRUE, 1.0, 1.0);
dirtree->expanding = FALSE;
gtk_tree_path_free(q);
}
/* dirtree_refresh_folder */
static gboolean _dirtree_refresh_folder(Dirtree * dirtree, GtkTreeIter * parent,
char const * path, char const * basename, gboolean recurse)
{
gboolean ret = FALSE;
DIR * dir;
struct dirent * de;
GtkTreeModel * model = GTK_TREE_MODEL(dirtree->store);
GtkTreeIter iter;
GtkTreePath * s;
GtkTreeRowReference * t = NULL;
gboolean valid;
String * q;
gchar * r;
gboolean b;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(parent, \"%s\", \"%s\", %s)\n", __func__,
path, basename, recurse ? "TRUE" : "FALSE");
#endif
/* consider all the current nodes obsolete */
for(valid = gtk_tree_model_iter_children(model, &iter, parent);
valid == TRUE;
valid = gtk_tree_model_iter_next(model, &iter))
gtk_tree_store_set(dirtree->store, &iter, 3, FALSE, -1);
if((dir = opendir(path)) == NULL)
return FALSE;
if(strcmp(path, "/") == 0) /* XXX hack */
path = "";
while((de = readdir(dir)) != NULL)
{
/* skip hidden folders except if we traverse it */
if(basename != NULL && strcmp(de->d_name, basename) == 0)
ret = TRUE;
else if(de->d_name[0] == '.')
continue;
/* XXX d_type is not portable */
else if(de->d_type != DT_DIR && de->d_type != DT_LNK)
continue;
q = string_new_append(path, "/", de->d_name, NULL);
/* FIXME check if the node already exists */
r = (q != NULL) ? g_filename_display_basename(q) : NULL;
gtk_tree_store_insert(dirtree->store, &iter, parent, -1);
gtk_tree_store_set(dirtree->store, &iter,
DC_ICON, dirtree->folder,
DC_NAME, (r != NULL) ? r : de->d_name,
DC_PATH, q, DC_UPDATED, TRUE, -1);
if(recurse)
_dirtree_refresh_folder(dirtree, &iter, q, NULL,
(basename != NULL) ? TRUE : FALSE);
g_free(r);
string_delete(q);
if(ret == TRUE && strcmp(de->d_name, basename) == 0)
{
s = gtk_tree_model_get_path(model, &iter);
t = gtk_tree_row_reference_new(model, s);
gtk_tree_path_free(s);
}
}
closedir(dir);
/* remove all the obsolete nodes */
for(valid = gtk_tree_model_iter_children(model, &iter, parent);
valid == TRUE; valid = (b == TRUE)
? gtk_tree_model_iter_next(model, &iter)
: gtk_tree_store_remove(dirtree->store, &iter))
gtk_tree_model_get(model, &iter, DC_UPDATED, &b, -1);
/* return the parent if appropriate */
if(t != NULL)
{
s = gtk_tree_row_reference_get_path(t);
gtk_tree_model_get_iter(model, parent, s);
gtk_tree_row_reference_free(t);
}
return ret;
}
/* callbacks */
/* dirtree_on_idle */
static gboolean _dirtree_on_idle(gpointer data)
{
Dirtree * dirtree = data;
GtkTreeModel * model = GTK_TREE_MODEL(dirtree->store);
GtkTreeIter iter;
dirtree->source = 0;
gtk_tree_model_iter_children(model, &iter, NULL);
_dirtree_refresh_folder(dirtree, &iter, "/", NULL, TRUE);
return FALSE;
}
/* dirtree_on_row_activated */
static void _dirtree_on_row_activated(GtkTreeView * view, GtkTreePath * path,
GtkTreeViewColumn * column, gpointer data)
{
Dirtree * dirtree = data;
GtkTreeModel * model = GTK_TREE_MODEL(dirtree->sorted);
GtkTreeIter iter;
gchar * location;
gtk_tree_view_expand_row(view, path, FALSE);
gtk_tree_model_get_iter(model, &iter, path);
gtk_tree_model_get(model, &iter, DC_PATH, &location, -1);
dirtree->helper->set_location(dirtree->helper->browser, location);
g_free(location);
}
/* dirtree_on_row_expanded */
static void _dirtree_on_row_expanded(GtkTreeView * view, GtkTreeIter * iter,
GtkTreePath * path, gpointer data)
{
Dirtree * dirtree = data;
GtkTreeModel * model = GTK_TREE_MODEL(dirtree->store);
GtkTreeIter child;
gchar * p;
if(dirtree->expanding == TRUE)
return;
gtk_tree_model_sort_convert_iter_to_child_iter(GTK_TREE_MODEL_SORT(
dirtree->sorted), &child, iter);
gtk_tree_model_get(model, &child, DC_PATH, &p, -1);
_dirtree_refresh_folder(dirtree, &child, p, NULL, TRUE);
g_free(p);
}