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

/*
 * e-task-shell-content.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; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>  
 *
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include <glib/gi18n.h>

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

#include "calendar/gui/calendar-config.h"
#include "calendar/gui/e-calendar-table.h"
#include "calendar/gui/e-calendar-table-config.h"

#include "widgets/menus/gal-view-etable.h"

#define E_TASK_SHELL_CONTENT_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_TASK_SHELL_CONTENT, ETaskShellContentPrivate))

#define E_CALENDAR_TABLE_DEFAULT_STATE \
    "<?xml version=\"1.0\"?>" \
    "<ETableState>" \
    "  <column source=\"13\"/>" \
    "  <column source=\"14\"/>" \
    "  <column source=\"9\"/>" \
    "  <column source=\"5\"/>" \
    "  <grouping/>" \
    "</ETableState>"

struct _ETaskShellContentPrivate {
    GtkWidget *paned;
    GtkWidget *task_table;
    GtkWidget *task_preview;

    ECalendarTableConfig *table_config;
    GalViewInstance *view_instance;

    gchar *current_uid;
};

enum {
    PROP_0,
    PROP_PREVIEW_VISIBLE
};

enum {
    TARGET_VCALENDAR
};

static GtkTargetEntry drag_types[] = {
    { "text/calendar", 0, TARGET_VCALENDAR },
    { "text/x-calendar", 0, TARGET_VCALENDAR }
};

static gpointer parent_class;

static void
task_shell_content_changed_cb (ETaskShellContent *task_shell_content,
                               GalViewInstance *view_instance)
{
    EShellView *shell_view;
    EShellContent *shell_content;
    gchar *view_id;

    shell_content = E_SHELL_CONTENT (task_shell_content);
    shell_view = e_shell_content_get_shell_view (shell_content);
    view_id = gal_view_instance_get_current_view_id (view_instance);
    e_shell_view_set_view_id (shell_view, view_id);
    g_free (view_id);
}

static void
task_shell_content_display_view_cb (ETaskShellContent *task_shell_content,
                                    GalView *gal_view)
{
    ECalendarTable *task_table;
    ETable *table;

    if (!GAL_IS_VIEW_ETABLE (gal_view))
        return;

    task_table = E_CALENDAR_TABLE (task_shell_content->priv->task_table);
    table = e_calendar_table_get_table (task_table);

    gal_view_etable_attach_table (GAL_VIEW_ETABLE (gal_view), table);
}

static void
task_shell_content_table_drag_data_get_cb (ETaskShellContent *task_shell_content,
                                           gint row,
                                           gint col,
                                           GdkDragContext *context,
                                           GtkSelectionData *selection_data,
                                           guint info,
                                           guint time)
{
    /* FIXME */
}

static void
task_shell_content_table_drag_data_delete_cb (ETaskShellContent *task_shell_content,
                                              gint row,
                                              gint col,
                                              GdkDragContext *context)
{
    /* Moved components are deleted from source immediately when moved,
     * because some of them can be part of destination source, and we
     * don't want to delete not-moved tasks.  There is no such information
     * which event has been moved and which not, so skip this method. */
}

static void
task_shell_content_cursor_change_cb (ETaskShellContent *task_shell_content,
                                     gint row,
                                     ETable *table)
{
    ECalComponentPreview *task_preview;
    ECalendarTable *task_table;
    ECalModel *model;
    ECalModelComponent *comp_data;
    ECalComponent *comp;
    const gchar *uid;

    task_preview = E_CAL_COMPONENT_PREVIEW (
        task_shell_content->priv->task_preview);
    task_table = E_CALENDAR_TABLE (task_shell_content->priv->task_table);

    if (e_table_selected_count (table) != 1) {
        e_cal_component_preview_clear (task_preview);
        return;
    }

    model = e_calendar_table_get_model (task_table);
    row = e_table_get_cursor_row (table);
    comp_data = e_cal_model_get_component_at (model, row);

    comp = e_cal_component_new ();
    e_cal_component_set_icalcomponent (
        comp, icalcomponent_new_clone (comp_data->icalcomp));
    e_cal_component_preview_display (
        task_preview, comp_data->client, comp);

    e_cal_component_get_uid (comp, &uid);
    g_free (task_shell_content->priv->current_uid);
    task_shell_content->priv->current_uid = g_strdup (uid);

    g_object_unref (comp);
}

static void
task_shell_content_selection_change_cb (ETaskShellContent *task_shell_content,
                                        ETable *table)
{
    ECalComponentPreview *task_preview;

    task_preview = E_CAL_COMPONENT_PREVIEW (
        task_shell_content->priv->task_preview);

    /* XXX Old code emits a "selection-changed" signal here. */

    if (e_table_selected_count (table) != 1)
        e_cal_component_preview_clear (task_preview);
}

static void
task_shell_content_model_row_changed_cb (ETaskShellContent *task_shell_content,
                                         gint row,
                                         ETableModel *model)
{
    ECalModelComponent *comp_data;
    ECalendarTable *task_table;
    ETable *table;
    const gchar *current_uid;
    const gchar *uid;

    current_uid = task_shell_content->priv->current_uid;
    if (current_uid == NULL)
        return;

    comp_data = e_cal_model_get_component_at (E_CAL_MODEL (model), row);
    if (comp_data == NULL)
        return;

    uid = icalcomponent_get_uid (comp_data->icalcomp);
    if (g_strcmp0 (uid, current_uid) != 0)
        return;

    task_table = E_CALENDAR_TABLE (task_shell_content->priv->task_table);
    table = e_calendar_table_get_table (task_table);

    task_shell_content_cursor_change_cb (task_shell_content, 0, table);
}

static void
task_shell_content_set_property (GObject *object,
                                 guint property_id,
                                 const GValue *value,
                                 GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_PREVIEW_VISIBLE:
            e_task_shell_content_set_preview_visible (
                E_TASK_SHELL_CONTENT (object),
                g_value_get_boolean (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
task_shell_content_get_property (GObject *object,
                                 guint property_id,
                                 GValue *value,
                                 GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_PREVIEW_VISIBLE:
            g_value_set_boolean (
                value, e_task_shell_content_get_preview_visible (
                E_TASK_SHELL_CONTENT (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
task_shell_content_dispose (GObject *object)
{
    ETaskShellContentPrivate *priv;

    priv = E_TASK_SHELL_CONTENT_GET_PRIVATE (object);

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

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

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

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

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

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

static void
task_shell_content_finalize (GObject *object)
{
    ETaskShellContentPrivate *priv;

    priv = E_TASK_SHELL_CONTENT_GET_PRIVATE (object);

    g_free (priv->current_uid);

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

static void
task_shell_content_constructed (GObject *object)
{
    ETaskShellContentPrivate *priv;
    EShellContent *shell_content;
    EShellView *shell_view;
    EShellViewClass *shell_view_class;
    GalViewCollection *view_collection;
    GalViewInstance *view_instance;
    ECalModel *model;
    ETable *table;
    GConfBridge *bridge;
    GtkWidget *container;
    GtkWidget *widget;
    const gchar *key;

    priv = E_TASK_SHELL_CONTENT_GET_PRIVATE (object);

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

    shell_content = E_SHELL_CONTENT (object);
    shell_view = e_shell_content_get_shell_view (shell_content);
    shell_view_class = E_SHELL_VIEW_GET_CLASS (shell_view);
    view_collection = shell_view_class->view_collection;

    /* Build content widgets. */

    container = GTK_WIDGET (object);

    widget = gtk_vpaned_new ();
    gtk_container_add (GTK_CONTAINER (container), widget);
    priv->paned = g_object_ref (widget);
    gtk_widget_show (widget);

    container = widget;

    widget = e_calendar_table_new (shell_view);
    gtk_paned_add1 (GTK_PANED (container), widget);
    priv->task_table = g_object_ref (widget);
    gtk_widget_show (widget);

    widget = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (
        GTK_SCROLLED_WINDOW (widget),
        GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_scrolled_window_set_shadow_type (
        GTK_SCROLLED_WINDOW (widget), GTK_SHADOW_IN);
    gtk_paned_add2 (GTK_PANED (container), widget);
    gtk_widget_show (widget);

    container = widget;

    widget = e_cal_component_preview_new ();
    e_cal_component_preview_set_default_timezone (
        E_CAL_COMPONENT_PREVIEW (widget),
        calendar_config_get_icaltimezone ());
    gtk_container_add (GTK_CONTAINER (container), widget);
    priv->task_preview = g_object_ref (widget);
    gtk_widget_show (widget);

    /* Configure the task table. */

    widget = E_CALENDAR_TABLE (priv->task_table)->etable;
    table = e_table_scrolled_get_table (E_TABLE_SCROLLED (widget));
    model = e_calendar_table_get_model (E_CALENDAR_TABLE (priv->task_table));

    priv->table_config = e_calendar_table_config_new (
        E_CALENDAR_TABLE (priv->task_table));

    e_table_set_state (table, E_CALENDAR_TABLE_DEFAULT_STATE);

    e_table_drag_source_set (
        table, GDK_BUTTON1_MASK,
        drag_types, G_N_ELEMENTS (drag_types),
        GDK_ACTION_MOVE | GDK_ACTION_COPY | GDK_ACTION_ASK);

    g_signal_connect_swapped (
        table, "table-drag-data-get",
        G_CALLBACK (task_shell_content_table_drag_data_get_cb),
        object);

    g_signal_connect_swapped (
        table, "table-drag-data-delete",
        G_CALLBACK (task_shell_content_table_drag_data_delete_cb),
        object);

    g_signal_connect_swapped (
        table, "cursor-change",
        G_CALLBACK (task_shell_content_cursor_change_cb),
        object);

    g_signal_connect_swapped (
        table, "selection-change",
        G_CALLBACK (task_shell_content_selection_change_cb),
        object);

    g_signal_connect_swapped (
        model, "model-row-changed",
        G_CALLBACK (task_shell_content_model_row_changed_cb),
        object);

    /* Load the view instance. */

    view_instance = gal_view_instance_new (view_collection, NULL);
    g_signal_connect_swapped (
        view_instance, "changed",
        G_CALLBACK (task_shell_content_changed_cb),
        object);
    g_signal_connect_swapped (
        view_instance, "display-view",
        G_CALLBACK (task_shell_content_display_view_cb),
        object);
    gal_view_instance_load (view_instance);
    priv->view_instance = view_instance;

    /* Bind GObject properties to GConf keys. */

    bridge = gconf_bridge_get ();

    object = G_OBJECT (priv->paned);
    key = "/apps/evolution/calendar/display/task_vpane_position";
    gconf_bridge_bind_property_delayed (bridge, key, object, "position");
}

static guint32
task_shell_content_check_state (EShellContent *shell_content)
{
    ETaskShellContent *task_shell_content;
    ECalendarTable *task_table;
    ETable *table;
    GSList *list, *iter;
    gboolean assignable = TRUE;
    gboolean editable = TRUE;
    gboolean has_url = FALSE;
    gint n_selected;
    gint n_complete = 0;
    gint n_incomplete = 0;
    guint32 state = 0;

    task_shell_content = E_TASK_SHELL_CONTENT (shell_content);
    task_table = e_task_shell_content_get_task_table (task_shell_content);

    table = e_calendar_table_get_table (task_table);
    n_selected = e_table_selected_count (table);

    list = e_calendar_table_get_selected (task_table);
    for (iter = list; iter != NULL; iter = iter->next) {
        ECalModelComponent *comp_data = iter->data;
        icalproperty *prop;
        const gchar *cap;
        gboolean read_only;

        e_cal_is_read_only (comp_data->client, &read_only, NULL);
        editable &= !read_only;

        cap = CAL_STATIC_CAPABILITY_NO_TASK_ASSIGNMENT;
        if (e_cal_get_static_capability (comp_data->client, cap))
            assignable = FALSE;

        cap = CAL_STATIC_CAPABILITY_NO_CONV_TO_ASSIGN_TASK;
        if (e_cal_get_static_capability (comp_data->client, cap))
            assignable = FALSE;

        prop = icalcomponent_get_first_property (
            comp_data->icalcomp, ICAL_URL_PROPERTY);
        has_url |= (prop != NULL);

        prop = icalcomponent_get_first_property (
            comp_data->icalcomp, ICAL_COMPLETED_PROPERTY);
        if (prop != NULL)
            n_complete++;
        else
            n_incomplete++;
    }
    g_slist_free (list);

    if (n_selected == 1)
        state |= E_TASK_SHELL_CONTENT_SELECTION_SINGLE;
    if (n_selected > 1)
        state |= E_TASK_SHELL_CONTENT_SELECTION_MULTIPLE;
    if (assignable)
        state |= E_TASK_SHELL_CONTENT_SELECTION_CAN_ASSIGN;
    if (editable)
        state |= E_TASK_SHELL_CONTENT_SELECTION_CAN_EDIT;
    if (n_complete > 0)
        state |= E_TASK_SHELL_CONTENT_SELECTION_HAS_COMPLETE;
    if (n_incomplete > 0)
        state |= E_TASK_SHELL_CONTENT_SELECTION_HAS_INCOMPLETE;
    if (has_url)
        state |= E_TASK_SHELL_CONTENT_SELECTION_HAS_URL;

    return state;
}

static void
task_shell_content_class_init (ETaskShellContentClass *class)
{
    GObjectClass *object_class;
    EShellContentClass *shell_content_class;

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

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = task_shell_content_set_property;
    object_class->get_property = task_shell_content_get_property;
    object_class->dispose = task_shell_content_dispose;
    object_class->finalize = task_shell_content_finalize;
    object_class->constructed = task_shell_content_constructed;

    shell_content_class = E_SHELL_CONTENT_CLASS (class);
    shell_content_class->check_state = task_shell_content_check_state;

    g_object_class_install_property (
        object_class,
        PROP_PREVIEW_VISIBLE,
        g_param_spec_boolean (
            "preview-visible",
            _("Preview is Visible"),
            _("Whether the preview pane is visible"),
            TRUE,
            G_PARAM_READWRITE));
}

static void
task_shell_content_init (ETaskShellContent *task_shell_content)
{
    task_shell_content->priv =
        E_TASK_SHELL_CONTENT_GET_PRIVATE (task_shell_content);

    /* Postpone widget construction until we have a shell view. */
}

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

    if (G_UNLIKELY (type == 0)) {
        static const GTypeInfo type_info = {
            sizeof (ETaskShellContentClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) task_shell_content_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,  /* class_data */
            sizeof (ETaskShellContent),
            0,     /* n_preallocs */
            (GInstanceInitFunc) task_shell_content_init,
            NULL   /* value_table */
        };

        type = g_type_register_static (
            E_TYPE_SHELL_CONTENT, "ETaskShellContent",
            &type_info, 0);
    }

    return type;
}

GtkWidget *
e_task_shell_content_new (EShellView *shell_view)
{
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return g_object_new (
        E_TYPE_TASK_SHELL_CONTENT,
        "shell-view", shell_view, NULL);
}

ECalComponentPreview *
e_task_shell_content_get_task_preview (ETaskShellContent *task_shell_content)
{
    g_return_val_if_fail (
        E_IS_TASK_SHELL_CONTENT (task_shell_content), NULL);

    return E_CAL_COMPONENT_PREVIEW (
        task_shell_content->priv->task_preview);
}

ECalendarTable *
e_task_shell_content_get_task_table (ETaskShellContent *task_shell_content)
{
    g_return_val_if_fail (
        E_IS_TASK_SHELL_CONTENT (task_shell_content), NULL);

    return E_CALENDAR_TABLE (task_shell_content->priv->task_table);
}

GalViewInstance *
e_task_shell_content_get_view_instance (ETaskShellContent *task_shell_content)
{
    g_return_val_if_fail (
        E_IS_TASK_SHELL_CONTENT (task_shell_content), NULL);

    return task_shell_content->priv->view_instance;
}

gboolean
e_task_shell_content_get_preview_visible (ETaskShellContent *task_shell_content)
{
    GtkPaned *paned;
    GtkWidget *child;

    g_return_val_if_fail (
        E_IS_TASK_SHELL_CONTENT (task_shell_content), FALSE);

    paned = GTK_PANED (task_shell_content->priv->paned);
    child = gtk_paned_get_child2 (paned);

    return GTK_WIDGET_VISIBLE (child);
}

void
e_task_shell_content_set_preview_visible (ETaskShellContent *task_shell_content,
                                          gboolean preview_visible)
{
    GtkPaned *paned;
    GtkWidget *child;

    g_return_if_fail (E_IS_TASK_SHELL_CONTENT (task_shell_content));

    paned = GTK_PANED (task_shell_content->priv->paned);
    child = gtk_paned_get_child2 (paned);

    if (preview_visible)
        gtk_widget_show (child);
    else
        gtk_widget_hide (child);

    g_object_notify (G_OBJECT (task_shell_content), "preview-visible");
}