path: root/shell/e-shell-view.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
 * e-shell-view.c
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU 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 General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "e-shell-view.h"

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

#include "e-util/e-util.h"

#include "e-shell-content.h"
#include "e-shell-module.h"
#include "e-shell-sidebar.h"
#include "e-shell-taskbar.h"
#include "e-shell-window.h"
#include "e-shell-window-actions.h"

#define E_SHELL_VIEW_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_SHELL_VIEW, EShellViewPrivate))

struct _EShellViewPrivate {

    gpointer shell_window;  /* weak pointer */

    gchar *title;
    gchar *view_id;
    gint page_num;
    guint merge_id;

    GtkAction *action;
    GtkSizeGroup *size_group;
    GtkWidget *shell_content;
    GtkWidget *shell_sidebar;
    GtkWidget *shell_taskbar;
};

enum {
    PROP_0,
    PROP_ACTION,
    PROP_PAGE_NUM,
    PROP_TITLE,
    PROP_SHELL_CONTENT,
    PROP_SHELL_SIDEBAR,
    PROP_SHELL_TASKBAR,
    PROP_SHELL_WINDOW,
    PROP_VIEW_ID
};

enum {
    TOGGLED,
    UPDATE_ACTIONS,
    LAST_SIGNAL
};

static gpointer parent_class;
static gulong signals[LAST_SIGNAL];

static void
shell_view_init_view_collection (EShellViewClass *shell_view_class)
{
    EShellModule *shell_module;
    const gchar *base_dir;
    const gchar *module_name;
    gchar *system_dir;
    gchar *local_dir;

    shell_module = E_SHELL_MODULE (shell_view_class->type_module);
    module_name = shell_view_class->type_module->name;

    base_dir = EVOLUTION_GALVIEWSDIR;
    system_dir = g_build_filename (base_dir, module_name, NULL);

    base_dir = e_shell_module_get_data_dir (shell_module);
    local_dir = g_build_filename (base_dir, "views", NULL);

    /* The view collection is never destroyed. */
    shell_view_class->view_collection = gal_view_collection_new ();

    gal_view_collection_set_title (
        shell_view_class->view_collection,
        shell_view_class->label);

    gal_view_collection_set_storage_directories (
        shell_view_class->view_collection,
        system_dir, local_dir);

    g_free (system_dir);
    g_free (local_dir);

    /* This is all we can do.  It's up to the subclasses to
     * add the appropriate factories to the view collection. */
}

static void
shell_view_emit_toggled (EShellView *shell_view)
{
    g_signal_emit (shell_view, signals[TOGGLED], 0);
}

static void
shell_view_set_action (EShellView *shell_view,
                       GtkAction *action)
{
    gchar *label;

    g_return_if_fail (shell_view->priv->action == NULL);

    shell_view->priv->action = g_object_ref (action);

    g_object_get (action, "label", &label, NULL);
    e_shell_view_set_title (shell_view, label);
    g_free (label);

    g_signal_connect_swapped (
        action, "toggled",
        G_CALLBACK (shell_view_emit_toggled), shell_view);
}

static void
shell_view_set_page_num (EShellView *shell_view,
                         gint page_num)
{
    shell_view->priv->page_num = page_num;
}

static void
shell_view_set_shell_window (EShellView *shell_view,
                             GtkWidget *shell_window)
{
    g_return_if_fail (shell_view->priv->shell_window == NULL);

    shell_view->priv->shell_window = shell_window;

    g_object_add_weak_pointer (
        G_OBJECT (shell_window),
        &shell_view->priv->shell_window);
}

static void
shell_view_set_property (GObject *object,
                         guint property_id,
                         const GValue *value,
                         GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_ACTION:
            shell_view_set_action (
                E_SHELL_VIEW (object),
                g_value_get_object (value));
            return;

        case PROP_PAGE_NUM:
            shell_view_set_page_num (
                E_SHELL_VIEW (object),
                g_value_get_int (value));
            return;

        case PROP_TITLE:
            e_shell_view_set_title (
                E_SHELL_VIEW (object),
                g_value_get_string (value));
            return;

        case PROP_SHELL_WINDOW:
            shell_view_set_shell_window (
                E_SHELL_VIEW (object),
                g_value_get_object (value));
            return;

        case PROP_VIEW_ID:
            e_shell_view_set_view_id (
                E_SHELL_VIEW (object),
                g_value_get_string (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
shell_view_get_property (GObject *object,
                         guint property_id,
                         GValue *value,
                         GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_ACTION:
            g_value_set_object (
                value, e_shell_view_get_action (
                E_SHELL_VIEW (object)));
            return;

        case PROP_PAGE_NUM:
            g_value_set_int (
                value, e_shell_view_get_page_num (
                E_SHELL_VIEW (object)));
            return;

        case PROP_TITLE:
            g_value_set_string (
                value, e_shell_view_get_title (
                E_SHELL_VIEW (object)));
            return;

        case PROP_SHELL_CONTENT:
            g_value_set_object (
                value, e_shell_view_get_shell_content (
                E_SHELL_VIEW (object)));
            return;

        case PROP_SHELL_SIDEBAR:
            g_value_set_object (
                value, e_shell_view_get_shell_sidebar (
                E_SHELL_VIEW (object)));
            return;

        case PROP_SHELL_TASKBAR:
            g_value_set_object (
                value, e_shell_view_get_shell_taskbar (
                E_SHELL_VIEW (object)));
            return;

        case PROP_SHELL_WINDOW:
            g_value_set_object (
                value, e_shell_view_get_shell_window (
                E_SHELL_VIEW (object)));
            return;

        case PROP_VIEW_ID:
            g_value_set_string (
                value, e_shell_view_get_view_id (
                E_SHELL_VIEW (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
shell_view_dispose (GObject *object)
{
    EShellViewPrivate *priv;

    priv = E_SHELL_VIEW_GET_PRIVATE (object);

    if (priv->shell_window != NULL) {
        g_object_remove_weak_pointer (
            G_OBJECT (priv->shell_window), &priv->shell_window);
        priv->shell_window = NULL;
    }

    if (priv->size_group != NULL) {
        g_object_unref (priv->size_group);
        priv->size_group = NULL;
    }

    if (priv->shell_content != NULL) {
        g_object_unref (priv->shell_content);
        priv->shell_content = NULL;
    }

    if (priv->shell_sidebar != NULL) {
        g_object_unref (priv->shell_sidebar);
        priv->shell_sidebar = NULL;
    }

    if (priv->shell_taskbar != NULL) {
        g_object_unref (priv->shell_taskbar);
        priv->shell_taskbar = NULL;
    }

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

static void
shell_view_finalize (GObject *object)
{
    EShellViewPrivate *priv;

    priv = E_SHELL_VIEW_GET_PRIVATE (object);

    g_free (priv->title);
    g_free (priv->view_id);

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

static void
shell_view_constructed (GObject *object)
{
    EShellView *shell_view;
    EShellViewClass *class;
    GtkWidget *widget;

    shell_view = E_SHELL_VIEW (object);
    class = E_SHELL_VIEW_GET_CLASS (object);

    /* Invoke factory methods. */

    widget = class->new_shell_content (shell_view);
    shell_view->priv->shell_content = g_object_ref_sink (widget);
    gtk_widget_show (widget);

    widget = class->new_shell_sidebar (shell_view);
    shell_view->priv->shell_sidebar = g_object_ref_sink (widget);
    gtk_widget_show (widget);

    widget = class->new_shell_taskbar (shell_view);
    shell_view->priv->shell_taskbar = g_object_ref_sink (widget);
    gtk_widget_show (widget);
}

static void
shell_view_toggled (EShellView *shell_view)
{
    EShellViewPrivate *priv = shell_view->priv;
    EShellViewClass *shell_view_class;
    EShellWindow *shell_window;
    GtkUIManager *ui_manager;
    const gchar *basename;

    shell_view_class = E_SHELL_VIEW_GET_CLASS (shell_view);
    shell_window = e_shell_view_get_shell_window (shell_view);
    ui_manager = e_shell_window_get_ui_manager (shell_window);
    basename = shell_view_class->ui_definition;

    if (e_shell_view_is_active (shell_view))
        priv->merge_id = e_load_ui_definition (ui_manager, basename);
    else
        gtk_ui_manager_remove_ui (ui_manager, priv->merge_id);

    gtk_ui_manager_ensure_update (ui_manager);
}

static void
shell_view_class_init (EShellViewClass *class)
{
    GObjectClass *object_class;

    parent_class = g_type_class_peek_parent (class);
    g_type_class_add_private (class, sizeof (EShellViewPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = shell_view_set_property;
    object_class->get_property = shell_view_get_property;
    object_class->dispose = shell_view_dispose;
    object_class->finalize = shell_view_finalize;
    object_class->constructed = shell_view_constructed;

    /* Default Factories */
    class->new_shell_content = e_shell_content_new;
    class->new_shell_sidebar = e_shell_sidebar_new;
    class->new_shell_taskbar = e_shell_taskbar_new;

    class->toggled = shell_view_toggled;

    g_object_class_install_property (
        object_class,
        PROP_ACTION,
        g_param_spec_object (
            "action",
            _("Switcher Action"),
            _("The switcher action for this shell view"),
            GTK_TYPE_RADIO_ACTION,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY));

    g_object_class_install_property (
        object_class,
        PROP_PAGE_NUM,
        g_param_spec_int (
            "page-num",
            _("Page Number"),
            _("The notebook page number of the shell view"),
            -1,
            G_MAXINT,
            -1,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY));

    g_object_class_install_property (
        object_class,
        PROP_TITLE,
        g_param_spec_string (
            "title",
            _("Title"),
            _("The title of the shell view"),
            NULL,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_SHELL_CONTENT,
        g_param_spec_object (
            "shell-content",
            _("Shell Content Widget"),
            _("The content widget appears in "
              "a shell window's right pane"),
            E_TYPE_SHELL_CONTENT,
            G_PARAM_READABLE));

    g_object_class_install_property (
        object_class,
        PROP_SHELL_SIDEBAR,
        g_param_spec_object (
            "shell-sidebar",
            _("Shell Sidebar Widget"),
            _("The sidebar widget appears in "
              "a shell window's left pane"),
            E_TYPE_SHELL_SIDEBAR,
            G_PARAM_READABLE));

    g_object_class_install_property (
        object_class,
        PROP_SHELL_TASKBAR,
        g_param_spec_object (
            "shell-taskbar",
            _("Shell Taskbar Widget"),
            _("The taskbar widget appears at "
              "the bottom of a shell window"),
            E_TYPE_SHELL_TASKBAR,
            G_PARAM_READABLE));

    g_object_class_install_property (
        object_class,
        PROP_SHELL_WINDOW,
        g_param_spec_object (
            "shell-window",
            _("Shell Window"),
            _("The window to which the shell view belongs"),
            E_TYPE_SHELL_WINDOW,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY));

    g_object_class_install_property (
        object_class,
        PROP_VIEW_ID,
        g_param_spec_string (
            "view-id",
            _("Current View ID"),
            _("The current GAL view ID"),
            NULL,
            G_PARAM_READWRITE));

    signals[TOGGLED] = g_signal_new (
        "toggled",
        G_OBJECT_CLASS_TYPE (object_class),
        G_SIGNAL_RUN_FIRST,
        G_STRUCT_OFFSET (EShellViewClass, toggled),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    signals[UPDATE_ACTIONS] = g_signal_new (
        "update-actions",
        G_OBJECT_CLASS_TYPE (object_class),
        G_SIGNAL_RUN_FIRST,
        G_STRUCT_OFFSET (EShellViewClass, update_actions),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);
}

static void
shell_view_init (EShellView *shell_view,
                 EShellViewClass *shell_view_class)
{
    GtkSizeGroup *size_group;

    size_group = gtk_size_group_new (GTK_SIZE_GROUP_VERTICAL);

    shell_view->priv = E_SHELL_VIEW_GET_PRIVATE (shell_view);
    shell_view->priv->size_group = size_group;

    if (shell_view_class->view_collection == NULL)
        shell_view_init_view_collection (shell_view_class);
}

GType
e_shell_view_get_type (void)
{
    static GType type = 0;

    if (G_UNLIKELY (type == 0)) {
        const GTypeInfo type_info = {
            sizeof (EShellViewClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) shell_view_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,  /* class_data */
            sizeof (EShellView),
            0,     /* n_preallocs */
            (GInstanceInitFunc) shell_view_init,
            NULL   /* value_table */
        };

        type = g_type_register_static (
            G_TYPE_OBJECT, "EShellView",
            &type_info, G_TYPE_FLAG_ABSTRACT);
    }

    return type;
}

const gchar *
e_shell_view_get_name (EShellView *shell_view)
{
    GtkAction *action;

    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    action = e_shell_view_get_action (shell_view);

    /* Switcher actions have a secret "view-name" data value.
     * This gets set in e_shell_window_create_switcher_actions(). */
    return g_object_get_data (G_OBJECT (action), "view-name");
}

GtkAction *
e_shell_view_get_action (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->action;
}

const gchar *
e_shell_view_get_title (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->title;
}

void
e_shell_view_set_title (EShellView *shell_view,
                        const gchar *title)
{
    g_return_if_fail (E_IS_SHELL_VIEW (shell_view));

    if (title == NULL)
        title = E_SHELL_VIEW_GET_CLASS (shell_view)->label;

    if (g_strcmp0 (shell_view->priv->title, title) == 0)
        return;

    g_free (shell_view->priv->title);
    shell_view->priv->title = g_strdup (title);

    g_object_notify (G_OBJECT (shell_view), "title");
}

const gchar *
e_shell_view_get_view_id (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->view_id;
}

void
e_shell_view_set_view_id (EShellView *shell_view,
                          const gchar *view_id)
{
    g_return_if_fail (E_IS_SHELL_VIEW (shell_view));

    if (g_strcmp0 (shell_view->priv->view_id, view_id) == 0)
        return;

    g_free (shell_view->priv->view_id);
    shell_view->priv->view_id = g_strdup (view_id);

    g_object_notify (G_OBJECT (shell_view), "view-id");
}

EShellWindow *
e_shell_view_get_shell_window (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return E_SHELL_WINDOW (shell_view->priv->shell_window);
}

EShellModule *
e_shell_view_get_shell_module (EShellView *shell_view)
{
    EShellViewClass *shell_view_class;

    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    /* Calling this function during the shell view's instance
     * initialization function will return the wrong result,
     * so catch that and emit a warning. */
    shell_view_class = E_SHELL_VIEW_GET_CLASS (shell_view);
    g_return_val_if_fail (E_IS_SHELL_VIEW_CLASS (shell_view_class), NULL);

    return E_SHELL_MODULE (shell_view_class->type_module);
}

gboolean
e_shell_view_is_active (EShellView *shell_view)
{
    GtkAction *action;

    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), FALSE);

    action = e_shell_view_get_action (shell_view);

    return gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
}

void
e_shell_view_add_activity (EShellView *shell_view,
                           EActivity *activity)
{
    EShellModule *shell_module;

    g_return_if_fail (E_IS_SHELL_VIEW (shell_view));
    g_return_if_fail (E_IS_ACTIVITY (activity));

    shell_module = e_shell_view_get_shell_module (shell_view);
    e_shell_module_add_activity (shell_module, activity);
}

gint
e_shell_view_get_page_num (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), -1);

    return shell_view->priv->page_num;
}

GtkSizeGroup *
e_shell_view_get_size_group (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->size_group;
}

EShellContent *
e_shell_view_get_shell_content (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return E_SHELL_CONTENT (shell_view->priv->shell_content);
}

EShellSidebar *
e_shell_view_get_shell_sidebar (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return E_SHELL_SIDEBAR (shell_view->priv->shell_sidebar);
}

EShellTaskbar *
e_shell_view_get_shell_taskbar (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return E_SHELL_TASKBAR (shell_view->priv->shell_taskbar);
}

void
e_shell_view_update_actions (EShellView *shell_view)
{
    g_return_if_fail (E_IS_SHELL_VIEW (shell_view));

    g_signal_emit (shell_view, signals[UPDATE_ACTIONS], 0);
}

/**
 * e_shell_view_show_popup_menu:
 * @shell_view: an #EShellView
 * @widget_path: path in the UI definition
 * @event: a #GdkEventButton
 *
 * Displays a context-sensitive (or "popup") menu that is described in
 * the UI definition loaded into @shell_view<!-- -->'s user interface
 * manager.  The menu will be shown at the current mouse cursor position.
 *
 * The #EShellView::update-actions signal is emitted just prior to
 * showing the menu to give @shell_view and any plugins that extend
 * @shell_view a chance to update the menu's actions.
 **/
void
e_shell_view_show_popup_menu (EShellView *shell_view,
                              const gchar *widget_path,
                              GdkEventButton *event)
{
    EShellWindow *shell_window;
    GtkWidget *menu;

    g_return_if_fail (E_IS_SHELL_VIEW (shell_view));

    e_shell_view_update_actions (shell_view);

    shell_window = e_shell_view_get_shell_window (shell_view);
    menu = e_shell_window_get_managed_widget (shell_window, widget_path);
    g_return_if_fail (GTK_IS_MENU (menu));

    if (event != NULL)
        gtk_menu_popup (
            GTK_MENU (menu), NULL, NULL, NULL, NULL,
            event->button, event->time);
    else
        gtk_menu_popup (
            GTK_MENU (menu), NULL, NULL, NULL, NULL,
            0, gtk_get_current_event_time ());
}