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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */

/*
 *
 * 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-composer-header.h"

#include <glib/gi18n-lib.h>

#define E_COMPOSER_HEADER_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_COMPOSER_HEADER, EComposerHeaderPrivate))

struct _EComposerHeaderPrivate {
    gchar *label;
    gboolean button;

    ESourceRegistry *registry;

    guint sensitive : 1;
    guint visible   : 1;
};

#define E_COMPOSER_HEADER_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_COMPOSER_HEADER, EComposerHeaderPrivate))

enum {
    PROP_0,
    PROP_BUTTON,
    PROP_LABEL,
    PROP_REGISTRY,
    PROP_SENSITIVE,
    PROP_VISIBLE
};

enum {
    CHANGED,
    CLICKED,
    LAST_SIGNAL
};

static guint signal_ids[LAST_SIGNAL];

G_DEFINE_ABSTRACT_TYPE (
    EComposerHeader,
    e_composer_header,
    G_TYPE_OBJECT)

static void
composer_header_button_clicked_cb (GtkButton *button,
                                   EComposerHeader *header)
{
    gtk_widget_grab_focus (header->input_widget);
    g_signal_emit (header, signal_ids[CLICKED], 0);
}

static void
composer_header_set_registry (EComposerHeader *header,
                              ESourceRegistry *registry)
{
    g_return_if_fail (E_IS_SOURCE_REGISTRY (registry));
    g_return_if_fail (header->priv->registry == NULL);

    header->priv->registry = g_object_ref (registry);
}

static void
composer_header_set_property (GObject *object,
                              guint property_id,
                              const GValue *value,
                              GParamSpec *pspec)
{
    EComposerHeaderPrivate *priv;

    priv = E_COMPOSER_HEADER_GET_PRIVATE (object);

    switch (property_id) {
        case PROP_BUTTON:   /* construct only */
            priv->button = g_value_get_boolean (value);
            return;

        case PROP_LABEL:    /* construct only */
            priv->label = g_value_dup_string (value);
            return;

        case PROP_REGISTRY:
            composer_header_set_registry (
                E_COMPOSER_HEADER (object),
                g_value_get_object (value));
            return;

        case PROP_SENSITIVE:
            e_composer_header_set_sensitive (
                E_COMPOSER_HEADER (object),
                g_value_get_boolean (value));
            return;

        case PROP_VISIBLE:
            e_composer_header_set_visible (
                E_COMPOSER_HEADER (object),
                g_value_get_boolean (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
composer_header_get_property (GObject *object,
                              guint property_id,
                              GValue *value,
                              GParamSpec *pspec)
{
    EComposerHeaderPrivate *priv;

    priv = E_COMPOSER_HEADER_GET_PRIVATE (object);

    switch (property_id) {
        case PROP_BUTTON:   /* construct only */
            g_value_set_boolean (value, priv->button);
            return;

        case PROP_LABEL:    /* construct only */
            g_value_set_string (value, priv->label);
            return;

        case PROP_REGISTRY:
            g_value_set_object (
                value, e_composer_header_get_registry (
                E_COMPOSER_HEADER (object)));
            return;

        case PROP_SENSITIVE:
            g_value_set_boolean (
                value, e_composer_header_get_sensitive (
                E_COMPOSER_HEADER (object)));
            return;

        case PROP_VISIBLE:
            g_value_set_boolean (
                value, e_composer_header_get_visible (
                E_COMPOSER_HEADER (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
composer_header_dispose (GObject *object)
{
    EComposerHeader *header = E_COMPOSER_HEADER (object);

    if (header->title_widget != NULL) {
        g_object_unref (header->title_widget);
        header->title_widget = NULL;
    }

    if (header->input_widget != NULL) {
        g_object_unref (header->input_widget);
        header->input_widget = NULL;
    }

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

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

static void
composer_header_finalize (GObject *object)
{
    EComposerHeaderPrivate *priv;

    priv = E_COMPOSER_HEADER_GET_PRIVATE (object);

    g_free (priv->label);

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

static void
composer_header_constructed (GObject *object)
{
    EComposerHeader *header;
    GtkWidget *widget;
    GtkWidget *label;

    header = E_COMPOSER_HEADER (object);

    if (header->input_widget == NULL) {
        g_critical (
            "EComposerHeader's input_widget "
            "must be set before chaining up");
        return;
    }

    if (header->priv->button) {
        widget = gtk_button_new_with_mnemonic (header->priv->label);
        gtk_widget_set_can_focus (widget, FALSE);
        g_signal_connect (
            widget, "clicked",
            G_CALLBACK (composer_header_button_clicked_cb),
            header);
        label = gtk_bin_get_child (GTK_BIN (widget));
    } else {
        widget = gtk_label_new_with_mnemonic (header->priv->label);
        gtk_label_set_mnemonic_widget (
            GTK_LABEL (widget), header->input_widget);
        label = widget;
    }

    gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);

    header->title_widget = g_object_ref_sink (widget);

    g_object_bind_property (
        header, "visible",
        header->title_widget, "visible",
        G_BINDING_SYNC_CREATE);

    g_object_bind_property (
        header, "visible",
        header->input_widget, "visible",
        G_BINDING_SYNC_CREATE);
}

static void
e_composer_header_class_init (EComposerHeaderClass *class)
{
    GObjectClass *object_class;

    g_type_class_add_private (class, sizeof (EComposerHeaderPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = composer_header_set_property;
    object_class->get_property = composer_header_get_property;
    object_class->dispose = composer_header_dispose;
    object_class->finalize = composer_header_finalize;
    object_class->constructed = composer_header_constructed;

    g_object_class_install_property (
        object_class,
        PROP_BUTTON,
        g_param_spec_boolean (
            "button",
            NULL,
            NULL,
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_LABEL,
        g_param_spec_string (
            "label",
            NULL,
            NULL,
            NULL,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_REGISTRY,
        g_param_spec_object (
            "registry",
            NULL,
            NULL,
            E_TYPE_SOURCE_REGISTRY,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_SENSITIVE,
        g_param_spec_boolean (
            "sensitive",
            NULL,
            NULL,
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_VISIBLE,
        g_param_spec_boolean (
            "visible",
            NULL,
            NULL,
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    signal_ids[CHANGED] = g_signal_new (
        "changed",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EComposerHeaderClass, changed),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    signal_ids[CLICKED] = g_signal_new (
        "clicked",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EComposerHeaderClass, clicked),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);
}

static void
e_composer_header_init (EComposerHeader *header)
{
    header->priv = E_COMPOSER_HEADER_GET_PRIVATE (header);
}

const gchar *
e_composer_header_get_label (EComposerHeader *header)
{
    g_return_val_if_fail (E_IS_COMPOSER_HEADER (header), NULL);

    return header->priv->label;
}

ESourceRegistry *
e_composer_header_get_registry (EComposerHeader *header)
{
    g_return_val_if_fail (E_IS_COMPOSER_HEADER (header), NULL);

    return header->priv->registry;
}

gboolean
e_composer_header_get_sensitive (EComposerHeader *header)
{
    g_return_val_if_fail (E_IS_COMPOSER_HEADER (header), FALSE);

    return header->priv->sensitive;
}

void
e_composer_header_set_sensitive (EComposerHeader *header,
                                 gboolean sensitive)
{
    g_return_if_fail (E_IS_COMPOSER_HEADER (header));

    if (header->priv->sensitive == sensitive)
        return;

    header->priv->sensitive = sensitive;

    g_object_notify (G_OBJECT (header), "sensitive");
}

gboolean
e_composer_header_get_visible (EComposerHeader *header)
{
    g_return_val_if_fail (E_IS_COMPOSER_HEADER (header), FALSE);

    return header->priv->visible;
}

void
e_composer_header_set_visible (EComposerHeader *header,
                               gboolean visible)
{
    g_return_if_fail (E_IS_COMPOSER_HEADER (header));

    if (header->priv->visible == visible)
        return;

    header->priv->visible = visible;

    g_object_notify (G_OBJECT (header), "visible");
}

void
e_composer_header_set_title_tooltip (EComposerHeader *header,
                                     const gchar *tooltip)
{
    g_return_if_fail (E_IS_COMPOSER_HEADER (header));

    gtk_widget_set_tooltip_text (header->title_widget, tooltip);
}

void
e_composer_header_set_input_tooltip (EComposerHeader *header,
                                     const gchar *tooltip)
{
    g_return_if_fail (E_IS_COMPOSER_HEADER (header));

    gtk_widget_set_tooltip_text (header->input_widget, tooltip);
}