path: root/modules/calendar/e-task-shell-backend.c

/*
 * e-task-shell-backend.c
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation.
 *
 * 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 Lesser General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-task-shell-backend.h"

#include <string.h>
#include <glib/gi18n.h>
#include <libecal/libecal.h>

#include "shell/e-shell.h"
#include "shell/e-shell-backend.h"
#include "shell/e-shell-window.h"

#include "calendar/gui/comp-util.h"
#include "calendar/gui/dialogs/task-editor.h"

#include "e-task-shell-content.h"
#include "e-task-shell-migrate.h"
#include "e-task-shell-sidebar.h"
#include "e-task-shell-view.h"

#define E_TASK_SHELL_BACKEND_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_TASK_SHELL_BACKEND, ETaskShellBackendPrivate))

struct _ETaskShellBackendPrivate {
    gint placeholder;
};

G_DEFINE_DYNAMIC_TYPE (
    ETaskShellBackend,
    e_task_shell_backend,
    E_TYPE_SHELL_BACKEND)

static void
task_shell_backend_new_task (ECalClient *cal_client,
                             EShell *shell,
                             CompEditorFlags flags)
{
    ECalComponent *comp;
    CompEditor *editor;

    editor = task_editor_new (cal_client, shell, flags);
    comp = cal_comp_task_new_with_defaults (cal_client);
    comp_editor_edit_comp (editor, comp);

    gtk_window_present (GTK_WINDOW (editor));

    g_object_unref (comp);
}

static void
task_shell_backend_task_new_cb (GObject *source_object,
                                GAsyncResult *result,
                                gpointer user_data)
{
    EShell *shell = user_data;
    EClient *client;
    CompEditorFlags flags = 0;
    GError *error = NULL;

    flags |= COMP_EDITOR_NEW_ITEM;

    client = e_client_cache_get_client_finish (
        E_CLIENT_CACHE (source_object), result, &error);

    /* Sanity check. */
    g_return_if_fail (
        ((client != NULL) && (error == NULL)) ||
        ((client == NULL) && (error != NULL)));

    if (client != NULL) {
        task_shell_backend_new_task (
            E_CAL_CLIENT (client), shell, flags);
        g_object_unref (client);
    } else {
        /* XXX Handle errors better. */
        g_warning ("%s: %s", G_STRFUNC, error->message);
        g_error_free (error);
    }

    g_object_unref (shell);
}

static void
task_shell_backend_task_assigned_new_cb (GObject *source_object,
                                         GAsyncResult *result,
                                         gpointer user_data)
{
    EShell *shell = E_SHELL (user_data);
    EClient *client;
    CompEditorFlags flags = 0;
    GError *error = NULL;

    flags |= COMP_EDITOR_NEW_ITEM;
    flags |= COMP_EDITOR_IS_ASSIGNED;
    flags |= COMP_EDITOR_USER_ORG;

    client = e_client_cache_get_client_finish (
        E_CLIENT_CACHE (source_object), result, &error);

    /* Sanity check. */
    g_return_if_fail (
        ((client != NULL) && (error == NULL)) ||
        ((client == NULL) && (error != NULL)));

    if (client != NULL) {
        task_shell_backend_new_task (
            E_CAL_CLIENT (client), shell, flags);
        g_object_unref (client);
    } else {
        /* XXX Handle errors better. */
        g_warning ("%s: %s", G_STRFUNC, error->message);
        g_error_free (error);
    }

    g_object_unref (shell);
}

static void
action_task_new_cb (GtkAction *action,
                    EShellWindow *shell_window)
{
    EShell *shell;
    ESource *source;
    ESourceRegistry *registry;
    EClientCache *client_cache;
    const gchar *action_name;

    /* This callback is used for both tasks and assigned tasks. */

    shell = e_shell_window_get_shell (shell_window);
    client_cache = e_shell_get_client_cache (shell);

    registry = e_shell_get_registry (shell);
    source = e_source_registry_ref_default_task_list (registry);

    /* Use a callback function appropriate for the action. */
    action_name = gtk_action_get_name (action);
    if (strcmp (action_name, "task-assigned-new") == 0)
        e_client_cache_get_client (
            client_cache, source,
            E_SOURCE_EXTENSION_TASK_LIST,
            NULL,
            task_shell_backend_task_assigned_new_cb,
            g_object_ref (shell));
    else
        e_client_cache_get_client (
            client_cache, source,
            E_SOURCE_EXTENSION_TASK_LIST,
            NULL,
            task_shell_backend_task_new_cb,
            g_object_ref (shell));

    g_object_unref (source);
}

static void
action_task_list_new_cb (GtkAction *action,
                         EShellWindow *shell_window)
{
    EShell *shell;
    ESourceRegistry *registry;
    ECalClientSourceType source_type;
    GtkWidget *config;
    GtkWidget *dialog;
    const gchar *icon_name;

    shell = e_shell_window_get_shell (shell_window);

    registry = e_shell_get_registry (shell);
    source_type = E_CAL_CLIENT_SOURCE_TYPE_TASKS;
    config = e_cal_source_config_new (registry, NULL, source_type);

    dialog = e_source_config_dialog_new (E_SOURCE_CONFIG (config));

    gtk_window_set_transient_for (
        GTK_WINDOW (dialog), GTK_WINDOW (shell_window));

    icon_name = gtk_action_get_icon_name (action);
    gtk_window_set_icon_name (GTK_WINDOW (dialog), icon_name);

    gtk_window_set_title (GTK_WINDOW (dialog), _("New Task List"));

    gtk_widget_show (dialog);
}

static GtkActionEntry item_entries[] = {

    { "task-new",
      "stock_task",
      NC_("New", "_Task"),
      "<Shift><Control>t",
      N_("Create a new task"),
      G_CALLBACK (action_task_new_cb) },

    { "task-assigned-new",
      "stock_task",
      NC_("New", "Assigne_d Task"),
      NULL,
      N_("Create a new assigned task"),
      G_CALLBACK (action_task_new_cb) }
};

static GtkActionEntry source_entries[] = {

    { "task-list-new",
      "stock_todo",
      NC_("New", "Tas_k List"),
      NULL,
      N_("Create a new task list"),
      G_CALLBACK (action_task_list_new_cb) }
};

static gboolean
task_shell_backend_handle_uri_cb (EShellBackend *shell_backend,
                                  const gchar *uri)
{
    EShell *shell;
    CompEditor *editor;
    CompEditorFlags flags = 0;
    EClient *client;
    EClientCache *client_cache;
    ECalComponent *comp;
    ESource *source;
    ESourceRegistry *registry;
    SoupURI *soup_uri;
    icalcomponent *icalcomp;
    icalproperty *icalprop;
    const gchar *cp;
    gchar *source_uid = NULL;
    gchar *comp_uid = NULL;
    gchar *comp_rid = NULL;
    gboolean handled = FALSE;
    GError *error = NULL;

    shell = e_shell_backend_get_shell (shell_backend);
    client_cache = e_shell_get_client_cache (shell);

    if (strncmp (uri, "task:", 5) != 0)
        return FALSE;

    soup_uri = soup_uri_new (uri);

    if (soup_uri == NULL)
        return FALSE;

    cp = soup_uri_get_query (soup_uri);
    if (cp == NULL)
        goto exit;

    while (*cp != '\0') {
        gchar *header;
        gchar *content;
        gsize header_len;
        gsize content_len;

        header_len = strcspn (cp, "=&");

        /* If it's malformed, give up. */
        if (cp[header_len] != '=')
            break;

        header = (gchar *) cp;
        header[header_len] = '\0';
        cp += header_len + 1;

        content_len = strcspn (cp, "&");

        content = g_strndup (cp, content_len);
        if (g_ascii_strcasecmp (header, "source-uid") == 0)
            source_uid = g_strdup (content);
        else if (g_ascii_strcasecmp (header, "comp-uid") == 0)
            comp_uid = g_strdup (content);
        else if (g_ascii_strcasecmp (header, "comp-rid") == 0)
            comp_rid = g_strdup (content);
        g_free (content);

        cp += content_len;
        if (*cp == '&') {
            cp++;
            if (strcmp (cp, "amp;") == 0)
                cp += 4;
        }
    }

    if (source_uid == NULL || comp_uid == NULL)
        goto exit;

    /* URI is valid, so consider it handled.  Whether
     * we successfully open it is another matter... */
    handled = TRUE;

    registry = e_shell_get_registry (shell);
    source = e_source_registry_ref_source (registry, source_uid);
    if (source == NULL) {
        g_printerr ("No source for UID '%s'\n", source_uid);
        goto exit;
    }

    client = e_client_cache_get_client_sync (
        client_cache, source,
        E_SOURCE_EXTENSION_TASK_LIST,
        NULL, &error);

    /* Sanity check. */
    g_return_val_if_fail (
        ((client != NULL) && (error == NULL)) ||
        ((client == NULL) && (error != NULL)), FALSE);

    if (error != NULL) {
        g_warning (
            "%s: Failed to create/open client: %s",
            G_STRFUNC, error->message);
        g_object_unref (source);
        g_error_free (error);
        goto exit;
    }

    g_object_unref (source);
    source = NULL;

    /* XXX Copied from e_task_shell_view_open_task().
     *     Clearly a new utility function is needed. */

    editor = comp_editor_find_instance (comp_uid);

    if (editor != NULL)
        goto present;

    e_cal_client_get_object_sync (
        E_CAL_CLIENT (client), comp_uid,
        comp_rid, &icalcomp, NULL, &error);

    if (error != NULL) {
        g_warning (
            "%s: Failed to get object: %s",
            G_STRFUNC, error->message);
        g_object_unref (client);
        g_error_free (error);
        goto exit;
    }

    comp = e_cal_component_new ();
    if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
        g_warning ("%s: Failed to set icalcomp to comp\n", G_STRFUNC);
        icalcomponent_free (icalcomp);
        icalcomp = NULL;
    }

    icalprop = icalcomp ? icalcomponent_get_first_property (
        icalcomp, ICAL_ATTENDEE_PROPERTY) : NULL;
    if (icalprop != NULL)
        flags |= COMP_EDITOR_IS_ASSIGNED;

    if (itip_organizer_is_user (registry, comp, E_CAL_CLIENT (client)))
        flags |= COMP_EDITOR_USER_ORG;

    if (!e_cal_component_has_attendees (comp))
        flags |= COMP_EDITOR_USER_ORG;

    editor = task_editor_new (E_CAL_CLIENT (client), shell, flags);
    comp_editor_edit_comp (editor, comp);

    g_object_unref (comp);

present:
    gtk_window_present (GTK_WINDOW (editor));

    g_object_unref (client);

exit:
    g_free (source_uid);
    g_free (comp_uid);
    g_free (comp_rid);

    soup_uri_free (soup_uri);

    return handled;
}

static void
task_shell_backend_window_added_cb (EShellBackend *shell_backend,
                                    GtkWindow *window)
{
    const gchar *module_name;

    if (!E_IS_SHELL_WINDOW (window))
        return;

    module_name = E_SHELL_BACKEND_GET_CLASS (shell_backend)->name;

    e_shell_window_register_new_item_actions (
        E_SHELL_WINDOW (window), module_name,
        item_entries, G_N_ELEMENTS (item_entries));

    e_shell_window_register_new_source_actions (
        E_SHELL_WINDOW (window), module_name,
        source_entries, G_N_ELEMENTS (source_entries));
}

static void
task_shell_backend_constructed (GObject *object)
{
    EShell *shell;
    EShellBackend *shell_backend;

    shell_backend = E_SHELL_BACKEND (object);
    shell = e_shell_backend_get_shell (shell_backend);

    g_signal_connect_swapped (
        shell, "handle-uri",
        G_CALLBACK (task_shell_backend_handle_uri_cb),
        shell_backend);

    g_signal_connect_swapped (
        shell, "window-added",
        G_CALLBACK (task_shell_backend_window_added_cb),
        shell_backend);

    /* Chain up to parent's constructed() method. */
    G_OBJECT_CLASS (e_task_shell_backend_parent_class)->constructed (object);
}

static void
e_task_shell_backend_class_init (ETaskShellBackendClass *class)
{
    GObjectClass *object_class;
    EShellBackendClass *shell_backend_class;

    g_type_class_add_private (class, sizeof (ETaskShellBackendPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->constructed = task_shell_backend_constructed;

    shell_backend_class = E_SHELL_BACKEND_CLASS (class);
    shell_backend_class->shell_view_type = E_TYPE_TASK_SHELL_VIEW;
    shell_backend_class->name = "tasks";
    shell_backend_class->aliases = "";
    shell_backend_class->schemes = "task";
    shell_backend_class->sort_order = 500;
    shell_backend_class->preferences_page = "calendar-and-tasks";
    shell_backend_class->start = NULL;
    shell_backend_class->migrate = e_task_shell_backend_migrate;
}

static void
e_task_shell_backend_class_finalize (ETaskShellBackendClass *class)
{
}

static void
e_task_shell_backend_init (ETaskShellBackend *task_shell_backend)
{
    task_shell_backend->priv =
        E_TASK_SHELL_BACKEND_GET_PRIVATE (task_shell_backend);
}

void
e_task_shell_backend_type_register (GTypeModule *type_module)
{
    /* XXX G_DEFINE_DYNAMIC_TYPE declares a static type registration
     *     function, so we have to wrap it with a public function in
     *     order to register types from a separate compilation unit. */
    e_task_shell_backend_register_type (type_module);
}