Moved from Mate-Extra repository

1 files changed, 413 insertions, 0 deletions

diff --git a/logview/logview-manager.c b/logview/logview-manager.c
new file mode 100644
index 00000000..c9f460e7
--- /dev/null
+++ b/logview/logview-manager.c
@@ -0,0 +1,413 @@
+/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* logview-manager.c - manager for the opened log objects
+ *
+ * Copyright (C) 2008 Cosimo Cecchi <[email protected]>
+ *
+ * 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; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 551 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ */
+
+/* logview-manager.c */
+
+#include "logview-manager.h"
+
+#include <glib/gi18n.h>
+
+#include "logview-prefs.h"
+#include "logview-marshal.h"
+#include "logview-app.h"
+
+enum {
+  LOG_ADDED,
+  LOG_CLOSED,
+  ACTIVE_CHANGED,
+  LAST_SIGNAL
+};
+
+typedef struct {
+  LogviewManager *manager;
+  gboolean set_active;
+  gboolean is_multiple;
+  GFile *file;
+} CreateCBData;
+
+typedef struct {
+  int total;
+  int current;
+  GPtrArray *errors;
+} MultipleCreation;
+
+struct _LogviewManagerPrivate {
+  GHashTable *logs;
+  LogviewLog *active_log;
+};
+
+static LogviewManager *singleton = NULL;
+static MultipleCreation *op = NULL;
+static guint signals[LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (LogviewManager, logview_manager, G_TYPE_OBJECT);
+
+#define GET_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), LOGVIEW_TYPE_MANAGER, LogviewManagerPrivate))
+
+static void
+logview_manager_finalize (GObject *object)
+{
+  LogviewManager *manager;
+
+  manager = LOGVIEW_MANAGER (object);
+
+  if (manager->priv->active_log) {
+   g_object_unref (manager->priv->active_log);
+  }
+
+  g_hash_table_destroy (manager->priv->logs);
+
+  G_OBJECT_CLASS (logview_manager_parent_class)->finalize (object);
+}
+
+static void
+logview_manager_class_init (LogviewManagerClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = logview_manager_finalize;
+
+  signals[LOG_ADDED] = g_signal_new ("log-added",
+                                     G_OBJECT_CLASS_TYPE (object_class),
+                                     G_SIGNAL_RUN_LAST,
+                                     G_STRUCT_OFFSET (LogviewManagerClass, log_added),
+                                     NULL, NULL,
+                                     g_cclosure_marshal_VOID__OBJECT,
+                                     G_TYPE_NONE, 1,
+                                     LOGVIEW_TYPE_LOG);
+
+  signals[LOG_CLOSED] = g_signal_new ("log-closed",
+                                      G_OBJECT_CLASS_TYPE (object_class),
+                                      G_SIGNAL_RUN_LAST,
+                                      G_STRUCT_OFFSET (LogviewManagerClass, log_closed),
+                                      NULL, NULL,
+                                      g_cclosure_marshal_VOID__OBJECT,
+                                      G_TYPE_NONE, 1,
+                                      LOGVIEW_TYPE_LOG);
+
+  signals[ACTIVE_CHANGED] = g_signal_new ("active-changed",
+                                          G_OBJECT_CLASS_TYPE (object_class),
+                                          G_SIGNAL_RUN_LAST,
+                                          G_STRUCT_OFFSET (LogviewManagerClass, active_changed),
+                                          NULL, NULL,
+                                          logview_marshal_VOID__OBJECT_OBJECT,
+                                          G_TYPE_NONE, 2,
+                                          LOGVIEW_TYPE_LOG,
+                                          LOGVIEW_TYPE_LOG);
+
+  g_type_class_add_private (klass, sizeof (LogviewManagerPrivate));
+}
+
+static void
+logview_manager_init (LogviewManager *self)
+{
+  LogviewManagerPrivate *priv = self->priv = GET_PRIVATE (self);
+
+  priv->active_log = NULL;
+  priv->logs = g_hash_table_new_full (g_str_hash, g_str_equal, 
+                                      (GDestroyNotify) g_free, (GDestroyNotify) g_object_unref);
+}
+
+static MultipleCreation *
+multiple_creation_op_new (int total)
+{
+  MultipleCreation *retval;
+
+  retval = g_slice_new0 (MultipleCreation);
+  retval->total = total;
+  retval->current = 0;
+  retval->errors = g_ptr_array_new ();
+
+  return retval;
+}
+
+static void
+multiple_creation_op_free (MultipleCreation *mc)
+{
+  g_ptr_array_foreach (mc->errors, (GFunc) g_strfreev, NULL);
+  g_ptr_array_free (mc->errors, TRUE);
+
+  g_slice_free (MultipleCreation, mc);
+}
+
+static void
+create_log_cb (LogviewLog *log,
+               GError *error,
+               gpointer user_data)
+{
+  CreateCBData *data = user_data;
+
+  if (log) {
+    char *log_uri;
+    LogviewPrefs *prefs;
+    GFile *file;
+
+    log_uri = logview_log_get_uri (log);
+
+    /* creation went well, store the log and notify */
+    g_hash_table_insert (data->manager->priv->logs,
+                         log_uri, log);
+
+    prefs = logview_prefs_get ();
+    file = logview_log_get_gfile (log);
+    logview_prefs_store_log (prefs, file);
+
+    g_object_unref (file);
+
+    g_signal_emit (data->manager, signals[LOG_ADDED], 0, log, NULL);
+
+    if (data->set_active) {
+      logview_manager_set_active_log (data->manager, log);
+    }
+  } else {
+    char *path;
+
+    /* notify the error */
+    path = g_file_get_path (data->file);
+
+    if (!data->is_multiple) {
+      logview_app_add_error (logview_app_get (),
+                             path, error->message);
+    } else {
+      char **error_arr = g_new0 (char *, 3);
+
+      error_arr[0] = g_strdup (path);
+      error_arr[1] = g_strdup (error->message);
+      error_arr[2] = NULL;
+
+      g_ptr_array_add (op->errors, error_arr);
+    }
+
+    g_free (path);
+  }
+  
+  if (data->is_multiple) {
+    op->current++;
+
+    if (op->total == op->current) {
+      logview_app_add_errors (logview_app_get (), op->errors);
+      multiple_creation_op_free (op);
+      op = NULL;
+    }
+  }
+
+  g_object_unref (data->file);
+  g_slice_free (CreateCBData, data);
+}
+
+static void
+add_log_from_gfile_internal (LogviewManager *manager,
+                             GFile *file,
+                             gboolean set_active,
+                             gboolean is_multiple)
+{
+  char *file_uri;
+  LogviewLog *log;
+  CreateCBData *data;
+
+  file_uri = g_file_get_uri (file);
+
+  if (set_active == FALSE) {
+    /* if it's the first log being added, set it as active anyway */
+    set_active = (manager->priv->logs == NULL);
+  }
+
+  if ((log = g_hash_table_lookup (manager->priv->logs, file_uri)) != NULL) {
+    /* log already exists, don't load it */
+    if (set_active) {
+      logview_manager_set_active_log (manager, log);
+    }
+  } else {
+    data = g_slice_new0 (CreateCBData);
+    data->manager = manager;
+    data->set_active = set_active;
+    data->is_multiple = is_multiple;
+    data->file = g_object_ref (file);
+
+    logview_log_create_from_gfile (file, create_log_cb, data);
+  }
+
+  g_free (file_uri);
+}
+
+static void
+logview_manager_add_log_from_name (LogviewManager *manager,
+                                   const char *filename, gboolean set_active,
+                                   gboolean is_multiple)
+{
+  GFile *file;
+
+  file = g_file_new_for_path (filename);
+
+  add_log_from_gfile_internal (manager, file, set_active, is_multiple);
+
+  g_object_unref (file);
+}
+
+/* public methods */
+
+LogviewManager*
+logview_manager_get (void)
+{
+  if (!singleton) {
+    singleton = g_object_new (LOGVIEW_TYPE_MANAGER, NULL);
+  }
+
+  return singleton;
+}
+
+void
+logview_manager_set_active_log (LogviewManager *manager,
+                                LogviewLog *log)
+{
+  LogviewLog *old_log = NULL;
+
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+
+  if (manager->priv->active_log) {
+    old_log = manager->priv->active_log;
+  }
+
+  manager->priv->active_log = g_object_ref (log);
+
+  g_signal_emit (manager, signals[ACTIVE_CHANGED], 0, log, old_log, NULL);
+
+  if (old_log) {
+    g_object_unref (old_log);
+  }
+}
+
+LogviewLog *
+logview_manager_get_active_log (LogviewManager *manager)
+{
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+
+  return (manager->priv->active_log != NULL) ?
+    g_object_ref (manager->priv->active_log) :
+    NULL;
+}
+
+void
+logview_manager_add_log_from_gfile (LogviewManager *manager,
+                                    GFile *file,
+                                    gboolean set_active)
+{
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+
+  add_log_from_gfile_internal (manager, file, set_active, FALSE);
+}
+
+void
+logview_manager_add_logs_from_name_list (LogviewManager *manager,
+                                         GSList *names,
+                                         const char *active)
+{
+  GSList *l;
+
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+  g_assert (op == NULL);
+
+  op = multiple_creation_op_new (g_slist_length (names));
+
+  for (l = names; l; l = l->next) {
+    logview_manager_add_log_from_name (manager, l->data,
+                                       (g_ascii_strcasecmp (active, l->data) == 0),
+                                       TRUE);
+  }
+}
+
+void
+logview_manager_add_logs_from_names (LogviewManager *manager,
+                                     char ** names)
+{
+  int i;
+
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+  g_assert (op == NULL);
+
+  op = multiple_creation_op_new (G_N_ELEMENTS (names));
+
+  for (i = 0; names[i]; i++) {
+    logview_manager_add_log_from_name (manager, names[i], FALSE, TRUE);
+  }
+}
+
+int
+logview_manager_get_log_count (LogviewManager *manager)
+{
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+
+  return g_hash_table_size (manager->priv->logs);
+}
+
+LogviewLog *
+logview_manager_get_if_loaded (LogviewManager *manager, char *uri)
+{
+  LogviewLog *log;
+
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+
+  log = g_hash_table_lookup (manager->priv->logs, uri);
+
+  if (log != NULL) {
+    return g_object_ref (log);
+  }
+
+  return NULL;
+}
+
+void
+logview_manager_close_active_log (LogviewManager *manager)
+{
+  LogviewLog *active_log;
+  char *log_uri;
+  GFile *file;
+
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+
+  active_log = manager->priv->active_log;
+  log_uri = logview_log_get_uri (active_log);
+  file = logview_log_get_gfile (active_log);
+
+  g_signal_emit (manager, signals[LOG_CLOSED], 0, active_log, NULL);
+
+  logview_prefs_remove_stored_log (logview_prefs_get (), file);
+
+  g_object_unref (file);
+
+  /* we own two refs to the active log; one is inside the hash table */
+  g_object_unref (active_log);
+  g_hash_table_remove (manager->priv->logs, log_uri);
+
+  g_free (log_uri);
+
+  /* someone else will take care of setting the next active log to us */
+}
+
+gboolean
+logview_manager_log_is_active (LogviewManager *manager,
+                               LogviewLog *log)
+{
+  g_assert (LOGVIEW_IS_MANAGER (manager));
+
+  return (manager->priv->active_log == log);
+}